mirror of https://gitee.com/openkylin/linux.git
4294 lines
117 KiB
C
4294 lines
117 KiB
C
/*******************************************************************************
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*
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* Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenFabrics.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*******************************************************************************/
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#include <linux/atomic.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/init.h>
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#include <linux/if_arp.h>
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#include <linux/if_vlan.h>
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#include <linux/notifier.h>
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#include <linux/net.h>
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#include <linux/types.h>
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#include <linux/timer.h>
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#include <linux/time.h>
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#include <linux/delay.h>
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#include <linux/etherdevice.h>
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#include <linux/netdevice.h>
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#include <linux/random.h>
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#include <linux/list.h>
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#include <linux/threads.h>
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#include <linux/highmem.h>
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#include <net/arp.h>
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#include <net/ndisc.h>
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#include <net/neighbour.h>
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#include <net/route.h>
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#include <net/addrconf.h>
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#include <net/ip6_route.h>
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#include <net/ip_fib.h>
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#include <net/tcp.h>
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#include <asm/checksum.h>
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#include "i40iw.h"
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static void i40iw_rem_ref_cm_node(struct i40iw_cm_node *);
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static void i40iw_cm_post_event(struct i40iw_cm_event *event);
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static void i40iw_disconnect_worker(struct work_struct *work);
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/**
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* i40iw_free_sqbuf - put back puda buffer if refcount = 0
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* @dev: FPK device
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* @buf: puda buffer to free
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*/
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void i40iw_free_sqbuf(struct i40iw_sc_dev *dev, void *bufp)
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{
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struct i40iw_puda_buf *buf = (struct i40iw_puda_buf *)bufp;
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struct i40iw_puda_rsrc *ilq = dev->ilq;
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if (!atomic_dec_return(&buf->refcount))
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i40iw_puda_ret_bufpool(ilq, buf);
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}
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/**
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* i40iw_derive_hw_ird_setting - Calculate IRD
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*
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* @cm_ird: IRD of connection's node
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*
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* The ird from the connection is rounded to a supported HW
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* setting (2,8,32,64) and then encoded for ird_size field of
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* qp_ctx
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*/
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static u8 i40iw_derive_hw_ird_setting(u16 cm_ird)
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{
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u8 encoded_ird_size;
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u8 pof2_cm_ird = 1;
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/* round-off to next powerof2 */
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while (pof2_cm_ird < cm_ird)
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pof2_cm_ird *= 2;
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/* ird_size field is encoded in qp_ctx */
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switch (pof2_cm_ird) {
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case I40IW_HW_IRD_SETTING_64:
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encoded_ird_size = 3;
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break;
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case I40IW_HW_IRD_SETTING_32:
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case I40IW_HW_IRD_SETTING_16:
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encoded_ird_size = 2;
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break;
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case I40IW_HW_IRD_SETTING_8:
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case I40IW_HW_IRD_SETTING_4:
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encoded_ird_size = 1;
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break;
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case I40IW_HW_IRD_SETTING_2:
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default:
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encoded_ird_size = 0;
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break;
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}
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return encoded_ird_size;
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}
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/**
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* i40iw_record_ird_ord - Record IRD/ORD passed in
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* @cm_node: connection's node
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* @conn_ird: connection IRD
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* @conn_ord: connection ORD
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*/
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static void i40iw_record_ird_ord(struct i40iw_cm_node *cm_node, u16 conn_ird, u16 conn_ord)
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{
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if (conn_ird > I40IW_MAX_IRD_SIZE)
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conn_ird = I40IW_MAX_IRD_SIZE;
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if (conn_ord > I40IW_MAX_ORD_SIZE)
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conn_ord = I40IW_MAX_ORD_SIZE;
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cm_node->ird_size = conn_ird;
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cm_node->ord_size = conn_ord;
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}
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/**
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* i40iw_copy_ip_ntohl - change network to host ip
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* @dst: host ip
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* @src: big endian
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*/
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void i40iw_copy_ip_ntohl(u32 *dst, __be32 *src)
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{
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*dst++ = ntohl(*src++);
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*dst++ = ntohl(*src++);
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*dst++ = ntohl(*src++);
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*dst = ntohl(*src);
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}
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/**
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* i40iw_copy_ip_htonl - change host addr to network ip
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* @dst: host ip
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* @src: little endian
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*/
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static inline void i40iw_copy_ip_htonl(__be32 *dst, u32 *src)
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{
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*dst++ = htonl(*src++);
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*dst++ = htonl(*src++);
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*dst++ = htonl(*src++);
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*dst = htonl(*src);
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}
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/**
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* i40iw_fill_sockaddr4 - get addr info for passive connection
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* @cm_node: connection's node
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* @event: upper layer's cm event
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*/
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static inline void i40iw_fill_sockaddr4(struct i40iw_cm_node *cm_node,
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struct iw_cm_event *event)
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{
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struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr;
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struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr;
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laddr->sin_family = AF_INET;
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raddr->sin_family = AF_INET;
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laddr->sin_port = htons(cm_node->loc_port);
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raddr->sin_port = htons(cm_node->rem_port);
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laddr->sin_addr.s_addr = htonl(cm_node->loc_addr[0]);
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raddr->sin_addr.s_addr = htonl(cm_node->rem_addr[0]);
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}
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/**
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* i40iw_fill_sockaddr6 - get ipv6 addr info for passive side
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* @cm_node: connection's node
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* @event: upper layer's cm event
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*/
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static inline void i40iw_fill_sockaddr6(struct i40iw_cm_node *cm_node,
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struct iw_cm_event *event)
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{
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struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr;
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struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)&event->remote_addr;
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laddr6->sin6_family = AF_INET6;
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raddr6->sin6_family = AF_INET6;
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laddr6->sin6_port = htons(cm_node->loc_port);
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raddr6->sin6_port = htons(cm_node->rem_port);
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i40iw_copy_ip_htonl(laddr6->sin6_addr.in6_u.u6_addr32,
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cm_node->loc_addr);
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i40iw_copy_ip_htonl(raddr6->sin6_addr.in6_u.u6_addr32,
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cm_node->rem_addr);
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}
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/**
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* i40iw_get_addr_info
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* @cm_node: contains ip/tcp info
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* @cm_info: to get a copy of the cm_node ip/tcp info
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*/
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static void i40iw_get_addr_info(struct i40iw_cm_node *cm_node,
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struct i40iw_cm_info *cm_info)
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{
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cm_info->ipv4 = cm_node->ipv4;
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cm_info->vlan_id = cm_node->vlan_id;
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memcpy(cm_info->loc_addr, cm_node->loc_addr, sizeof(cm_info->loc_addr));
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memcpy(cm_info->rem_addr, cm_node->rem_addr, sizeof(cm_info->rem_addr));
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cm_info->loc_port = cm_node->loc_port;
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cm_info->rem_port = cm_node->rem_port;
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cm_info->user_pri = cm_node->user_pri;
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}
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/**
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* i40iw_get_cmevent_info - for cm event upcall
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* @cm_node: connection's node
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* @cm_id: upper layers cm struct for the event
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* @event: upper layer's cm event
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*/
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static inline void i40iw_get_cmevent_info(struct i40iw_cm_node *cm_node,
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struct iw_cm_id *cm_id,
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struct iw_cm_event *event)
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{
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memcpy(&event->local_addr, &cm_id->m_local_addr,
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sizeof(event->local_addr));
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memcpy(&event->remote_addr, &cm_id->m_remote_addr,
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sizeof(event->remote_addr));
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if (cm_node) {
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event->private_data = (void *)cm_node->pdata_buf;
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event->private_data_len = (u8)cm_node->pdata.size;
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event->ird = cm_node->ird_size;
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event->ord = cm_node->ord_size;
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}
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}
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/**
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* i40iw_send_cm_event - upcall cm's event handler
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* @cm_node: connection's node
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* @cm_id: upper layer's cm info struct
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* @type: Event type to indicate
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* @status: status for the event type
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*/
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static int i40iw_send_cm_event(struct i40iw_cm_node *cm_node,
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struct iw_cm_id *cm_id,
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enum iw_cm_event_type type,
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int status)
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{
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struct iw_cm_event event;
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memset(&event, 0, sizeof(event));
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event.event = type;
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event.status = status;
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switch (type) {
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case IW_CM_EVENT_CONNECT_REQUEST:
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if (cm_node->ipv4)
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i40iw_fill_sockaddr4(cm_node, &event);
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else
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i40iw_fill_sockaddr6(cm_node, &event);
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event.provider_data = (void *)cm_node;
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event.private_data = (void *)cm_node->pdata_buf;
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event.private_data_len = (u8)cm_node->pdata.size;
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break;
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case IW_CM_EVENT_CONNECT_REPLY:
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i40iw_get_cmevent_info(cm_node, cm_id, &event);
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break;
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case IW_CM_EVENT_ESTABLISHED:
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event.ird = cm_node->ird_size;
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event.ord = cm_node->ord_size;
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break;
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case IW_CM_EVENT_DISCONNECT:
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break;
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case IW_CM_EVENT_CLOSE:
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break;
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default:
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i40iw_pr_err("event type received type = %d\n", type);
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return -1;
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}
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return cm_id->event_handler(cm_id, &event);
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}
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/**
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* i40iw_create_event - create cm event
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* @cm_node: connection's node
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* @type: Event type to generate
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*/
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static struct i40iw_cm_event *i40iw_create_event(struct i40iw_cm_node *cm_node,
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enum i40iw_cm_event_type type)
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{
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struct i40iw_cm_event *event;
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if (!cm_node->cm_id)
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return NULL;
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event = kzalloc(sizeof(*event), GFP_ATOMIC);
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if (!event)
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return NULL;
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event->type = type;
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event->cm_node = cm_node;
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memcpy(event->cm_info.rem_addr, cm_node->rem_addr, sizeof(event->cm_info.rem_addr));
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memcpy(event->cm_info.loc_addr, cm_node->loc_addr, sizeof(event->cm_info.loc_addr));
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event->cm_info.rem_port = cm_node->rem_port;
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event->cm_info.loc_port = cm_node->loc_port;
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event->cm_info.cm_id = cm_node->cm_id;
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i40iw_debug(cm_node->dev,
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I40IW_DEBUG_CM,
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"node=%p event=%p type=%u dst=%pI4 src=%pI4\n",
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cm_node,
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event,
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type,
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event->cm_info.loc_addr,
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event->cm_info.rem_addr);
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i40iw_cm_post_event(event);
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return event;
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}
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/**
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* i40iw_free_retrans_entry - free send entry
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* @cm_node: connection's node
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*/
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static void i40iw_free_retrans_entry(struct i40iw_cm_node *cm_node)
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{
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struct i40iw_sc_dev *dev = cm_node->dev;
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struct i40iw_timer_entry *send_entry;
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send_entry = cm_node->send_entry;
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if (send_entry) {
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cm_node->send_entry = NULL;
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i40iw_free_sqbuf(dev, (void *)send_entry->sqbuf);
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kfree(send_entry);
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atomic_dec(&cm_node->ref_count);
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}
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}
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/**
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* i40iw_cleanup_retrans_entry - free send entry with lock
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* @cm_node: connection's node
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*/
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static void i40iw_cleanup_retrans_entry(struct i40iw_cm_node *cm_node)
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{
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unsigned long flags;
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spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
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i40iw_free_retrans_entry(cm_node);
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spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
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}
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/**
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* i40iw_form_cm_frame - get a free packet and build frame
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* @cm_node: connection's node ionfo to use in frame
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* @options: pointer to options info
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* @hdr: pointer mpa header
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* @pdata: pointer to private data
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* @flags: indicates FIN or ACK
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*/
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static struct i40iw_puda_buf *i40iw_form_cm_frame(struct i40iw_cm_node *cm_node,
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struct i40iw_kmem_info *options,
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struct i40iw_kmem_info *hdr,
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struct i40iw_kmem_info *pdata,
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u8 flags)
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{
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struct i40iw_puda_buf *sqbuf;
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struct i40iw_sc_dev *dev = cm_node->dev;
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u8 *buf;
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struct tcphdr *tcph;
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struct iphdr *iph;
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struct ipv6hdr *ip6h;
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struct ethhdr *ethh;
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u16 packetsize;
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u16 eth_hlen = ETH_HLEN;
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u32 opts_len = 0;
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u32 pd_len = 0;
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u32 hdr_len = 0;
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u16 vtag;
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sqbuf = i40iw_puda_get_bufpool(dev->ilq);
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if (!sqbuf)
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return NULL;
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buf = sqbuf->mem.va;
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if (options)
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opts_len = (u32)options->size;
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if (hdr)
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hdr_len = hdr->size;
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if (pdata)
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pd_len = pdata->size;
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if (cm_node->vlan_id < VLAN_TAG_PRESENT)
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eth_hlen += 4;
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if (cm_node->ipv4)
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packetsize = sizeof(*iph) + sizeof(*tcph);
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else
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packetsize = sizeof(*ip6h) + sizeof(*tcph);
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packetsize += opts_len + hdr_len + pd_len;
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memset(buf, 0x00, eth_hlen + packetsize);
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sqbuf->totallen = packetsize + eth_hlen;
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sqbuf->maclen = eth_hlen;
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sqbuf->tcphlen = sizeof(*tcph) + opts_len;
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sqbuf->scratch = (void *)cm_node;
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ethh = (struct ethhdr *)buf;
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buf += eth_hlen;
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if (cm_node->ipv4) {
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sqbuf->ipv4 = true;
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iph = (struct iphdr *)buf;
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buf += sizeof(*iph);
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tcph = (struct tcphdr *)buf;
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buf += sizeof(*tcph);
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ether_addr_copy(ethh->h_dest, cm_node->rem_mac);
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ether_addr_copy(ethh->h_source, cm_node->loc_mac);
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if (cm_node->vlan_id < VLAN_TAG_PRESENT) {
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((struct vlan_ethhdr *)ethh)->h_vlan_proto = htons(ETH_P_8021Q);
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vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) | cm_node->vlan_id;
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((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag);
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((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto = htons(ETH_P_IP);
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} else {
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ethh->h_proto = htons(ETH_P_IP);
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}
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iph->version = IPVERSION;
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iph->ihl = 5; /* 5 * 4Byte words, IP headr len */
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iph->tos = 0;
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iph->tot_len = htons(packetsize);
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iph->id = htons(++cm_node->tcp_cntxt.loc_id);
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iph->frag_off = htons(0x4000);
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iph->ttl = 0x40;
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iph->protocol = IPPROTO_TCP;
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iph->saddr = htonl(cm_node->loc_addr[0]);
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iph->daddr = htonl(cm_node->rem_addr[0]);
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} else {
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sqbuf->ipv4 = false;
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ip6h = (struct ipv6hdr *)buf;
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buf += sizeof(*ip6h);
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tcph = (struct tcphdr *)buf;
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buf += sizeof(*tcph);
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ether_addr_copy(ethh->h_dest, cm_node->rem_mac);
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ether_addr_copy(ethh->h_source, cm_node->loc_mac);
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if (cm_node->vlan_id < VLAN_TAG_PRESENT) {
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((struct vlan_ethhdr *)ethh)->h_vlan_proto = htons(ETH_P_8021Q);
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vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) | cm_node->vlan_id;
|
|
((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag);
|
|
((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto = htons(ETH_P_IPV6);
|
|
} else {
|
|
ethh->h_proto = htons(ETH_P_IPV6);
|
|
}
|
|
ip6h->version = 6;
|
|
ip6h->flow_lbl[0] = 0;
|
|
ip6h->flow_lbl[1] = 0;
|
|
ip6h->flow_lbl[2] = 0;
|
|
ip6h->payload_len = htons(packetsize - sizeof(*ip6h));
|
|
ip6h->nexthdr = 6;
|
|
ip6h->hop_limit = 128;
|
|
i40iw_copy_ip_htonl(ip6h->saddr.in6_u.u6_addr32,
|
|
cm_node->loc_addr);
|
|
i40iw_copy_ip_htonl(ip6h->daddr.in6_u.u6_addr32,
|
|
cm_node->rem_addr);
|
|
}
|
|
|
|
tcph->source = htons(cm_node->loc_port);
|
|
tcph->dest = htons(cm_node->rem_port);
|
|
|
|
tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
|
|
|
|
if (flags & SET_ACK) {
|
|
cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
|
|
tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num);
|
|
tcph->ack = 1;
|
|
} else {
|
|
tcph->ack_seq = 0;
|
|
}
|
|
|
|
if (flags & SET_SYN) {
|
|
cm_node->tcp_cntxt.loc_seq_num++;
|
|
tcph->syn = 1;
|
|
} else {
|
|
cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
|
|
}
|
|
|
|
if (flags & SET_FIN) {
|
|
cm_node->tcp_cntxt.loc_seq_num++;
|
|
tcph->fin = 1;
|
|
}
|
|
|
|
if (flags & SET_RST)
|
|
tcph->rst = 1;
|
|
|
|
tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
|
|
sqbuf->tcphlen = tcph->doff << 2;
|
|
tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd);
|
|
tcph->urg_ptr = 0;
|
|
|
|
if (opts_len) {
|
|
memcpy(buf, options->addr, opts_len);
|
|
buf += opts_len;
|
|
}
|
|
|
|
if (hdr_len) {
|
|
memcpy(buf, hdr->addr, hdr_len);
|
|
buf += hdr_len;
|
|
}
|
|
|
|
if (pdata && pdata->addr)
|
|
memcpy(buf, pdata->addr, pdata->size);
|
|
|
|
atomic_set(&sqbuf->refcount, 1);
|
|
|
|
return sqbuf;
|
|
}
|
|
|
|
/**
|
|
* i40iw_send_reset - Send RST packet
|
|
* @cm_node: connection's node
|
|
*/
|
|
static int i40iw_send_reset(struct i40iw_cm_node *cm_node)
|
|
{
|
|
struct i40iw_puda_buf *sqbuf;
|
|
int flags = SET_RST | SET_ACK;
|
|
|
|
sqbuf = i40iw_form_cm_frame(cm_node, NULL, NULL, NULL, flags);
|
|
if (!sqbuf) {
|
|
i40iw_pr_err("no sqbuf\n");
|
|
return -1;
|
|
}
|
|
|
|
return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 0, 1);
|
|
}
|
|
|
|
/**
|
|
* i40iw_active_open_err - send event for active side cm error
|
|
* @cm_node: connection's node
|
|
* @reset: Flag to send reset or not
|
|
*/
|
|
static void i40iw_active_open_err(struct i40iw_cm_node *cm_node, bool reset)
|
|
{
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->cm_core->stats_connect_errs++;
|
|
if (reset) {
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"%s cm_node=%p state=%d\n",
|
|
__func__,
|
|
cm_node,
|
|
cm_node->state);
|
|
atomic_inc(&cm_node->ref_count);
|
|
i40iw_send_reset(cm_node);
|
|
}
|
|
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_create_event(cm_node, I40IW_CM_EVENT_ABORTED);
|
|
}
|
|
|
|
/**
|
|
* i40iw_passive_open_err - handle passive side cm error
|
|
* @cm_node: connection's node
|
|
* @reset: send reset or just free cm_node
|
|
*/
|
|
static void i40iw_passive_open_err(struct i40iw_cm_node *cm_node, bool reset)
|
|
{
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->cm_core->stats_passive_errs++;
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"%s cm_node=%p state =%d\n",
|
|
__func__,
|
|
cm_node,
|
|
cm_node->state);
|
|
if (reset)
|
|
i40iw_send_reset(cm_node);
|
|
else
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
}
|
|
|
|
/**
|
|
* i40iw_event_connect_error - to create connect error event
|
|
* @event: cm information for connect event
|
|
*/
|
|
static void i40iw_event_connect_error(struct i40iw_cm_event *event)
|
|
{
|
|
struct i40iw_qp *iwqp;
|
|
struct iw_cm_id *cm_id;
|
|
|
|
cm_id = event->cm_node->cm_id;
|
|
if (!cm_id)
|
|
return;
|
|
|
|
iwqp = cm_id->provider_data;
|
|
|
|
if (!iwqp || !iwqp->iwdev)
|
|
return;
|
|
|
|
iwqp->cm_id = NULL;
|
|
cm_id->provider_data = NULL;
|
|
i40iw_send_cm_event(event->cm_node, cm_id,
|
|
IW_CM_EVENT_CONNECT_REPLY,
|
|
-ECONNRESET);
|
|
cm_id->rem_ref(cm_id);
|
|
i40iw_rem_ref_cm_node(event->cm_node);
|
|
}
|
|
|
|
/**
|
|
* i40iw_process_options
|
|
* @cm_node: connection's node
|
|
* @optionsloc: point to start of options
|
|
* @optionsize: size of all options
|
|
* @syn_packet: flag if syn packet
|
|
*/
|
|
static int i40iw_process_options(struct i40iw_cm_node *cm_node,
|
|
u8 *optionsloc,
|
|
u32 optionsize,
|
|
u32 syn_packet)
|
|
{
|
|
u32 tmp;
|
|
u32 offset = 0;
|
|
union all_known_options *all_options;
|
|
char got_mss_option = 0;
|
|
|
|
while (offset < optionsize) {
|
|
all_options = (union all_known_options *)(optionsloc + offset);
|
|
switch (all_options->as_base.optionnum) {
|
|
case OPTION_NUMBER_END:
|
|
offset = optionsize;
|
|
break;
|
|
case OPTION_NUMBER_NONE:
|
|
offset += 1;
|
|
continue;
|
|
case OPTION_NUMBER_MSS:
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"%s: MSS Length: %d Offset: %d Size: %d\n",
|
|
__func__,
|
|
all_options->as_mss.length,
|
|
offset,
|
|
optionsize);
|
|
got_mss_option = 1;
|
|
if (all_options->as_mss.length != 4)
|
|
return -1;
|
|
tmp = ntohs(all_options->as_mss.mss);
|
|
if (tmp > 0 && tmp < cm_node->tcp_cntxt.mss)
|
|
cm_node->tcp_cntxt.mss = tmp;
|
|
break;
|
|
case OPTION_NUMBER_WINDOW_SCALE:
|
|
cm_node->tcp_cntxt.snd_wscale =
|
|
all_options->as_windowscale.shiftcount;
|
|
break;
|
|
default:
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"TCP Option not understood: %x\n",
|
|
all_options->as_base.optionnum);
|
|
break;
|
|
}
|
|
offset += all_options->as_base.length;
|
|
}
|
|
if (!got_mss_option && syn_packet)
|
|
cm_node->tcp_cntxt.mss = I40IW_CM_DEFAULT_MSS;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i40iw_handle_tcp_options -
|
|
* @cm_node: connection's node
|
|
* @tcph: pointer tcp header
|
|
* @optionsize: size of options rcvd
|
|
* @passive: active or passive flag
|
|
*/
|
|
static int i40iw_handle_tcp_options(struct i40iw_cm_node *cm_node,
|
|
struct tcphdr *tcph,
|
|
int optionsize,
|
|
int passive)
|
|
{
|
|
u8 *optionsloc = (u8 *)&tcph[1];
|
|
|
|
if (optionsize) {
|
|
if (i40iw_process_options(cm_node,
|
|
optionsloc,
|
|
optionsize,
|
|
(u32)tcph->syn)) {
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"%s: Node %p, Sending RESET\n",
|
|
__func__,
|
|
cm_node);
|
|
if (passive)
|
|
i40iw_passive_open_err(cm_node, true);
|
|
else
|
|
i40iw_active_open_err(cm_node, true);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) <<
|
|
cm_node->tcp_cntxt.snd_wscale;
|
|
|
|
if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
|
|
cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i40iw_build_mpa_v1 - build a MPA V1 frame
|
|
* @cm_node: connection's node
|
|
* @mpa_key: to do read0 or write0
|
|
*/
|
|
static void i40iw_build_mpa_v1(struct i40iw_cm_node *cm_node,
|
|
void *start_addr,
|
|
u8 mpa_key)
|
|
{
|
|
struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr;
|
|
|
|
switch (mpa_key) {
|
|
case MPA_KEY_REQUEST:
|
|
memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
|
|
break;
|
|
case MPA_KEY_REPLY:
|
|
memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
mpa_frame->flags = IETF_MPA_FLAGS_CRC;
|
|
mpa_frame->rev = cm_node->mpa_frame_rev;
|
|
mpa_frame->priv_data_len = htons(cm_node->pdata.size);
|
|
}
|
|
|
|
/**
|
|
* i40iw_build_mpa_v2 - build a MPA V2 frame
|
|
* @cm_node: connection's node
|
|
* @start_addr: buffer start address
|
|
* @mpa_key: to do read0 or write0
|
|
*/
|
|
static void i40iw_build_mpa_v2(struct i40iw_cm_node *cm_node,
|
|
void *start_addr,
|
|
u8 mpa_key)
|
|
{
|
|
struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr;
|
|
struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg;
|
|
u16 ctrl_ird, ctrl_ord;
|
|
|
|
/* initialize the upper 5 bytes of the frame */
|
|
i40iw_build_mpa_v1(cm_node, start_addr, mpa_key);
|
|
mpa_frame->flags |= IETF_MPA_V2_FLAG;
|
|
mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE);
|
|
|
|
/* initialize RTR msg */
|
|
if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) {
|
|
ctrl_ird = IETF_NO_IRD_ORD;
|
|
ctrl_ord = IETF_NO_IRD_ORD;
|
|
} else {
|
|
ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ?
|
|
IETF_NO_IRD_ORD : cm_node->ird_size;
|
|
ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ?
|
|
IETF_NO_IRD_ORD : cm_node->ord_size;
|
|
}
|
|
|
|
ctrl_ird |= IETF_PEER_TO_PEER;
|
|
ctrl_ird |= IETF_FLPDU_ZERO_LEN;
|
|
|
|
switch (mpa_key) {
|
|
case MPA_KEY_REQUEST:
|
|
ctrl_ord |= IETF_RDMA0_WRITE;
|
|
ctrl_ord |= IETF_RDMA0_READ;
|
|
break;
|
|
case MPA_KEY_REPLY:
|
|
switch (cm_node->send_rdma0_op) {
|
|
case SEND_RDMA_WRITE_ZERO:
|
|
ctrl_ord |= IETF_RDMA0_WRITE;
|
|
break;
|
|
case SEND_RDMA_READ_ZERO:
|
|
ctrl_ord |= IETF_RDMA0_READ;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
rtr_msg->ctrl_ird = htons(ctrl_ird);
|
|
rtr_msg->ctrl_ord = htons(ctrl_ord);
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_build_mpa_frame - build mpa frame for mpa version 1 or version 2
|
|
* @cm_node: connection's node
|
|
* @mpa: mpa: data buffer
|
|
* @mpa_key: to do read0 or write0
|
|
*/
|
|
static int i40iw_cm_build_mpa_frame(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_kmem_info *mpa,
|
|
u8 mpa_key)
|
|
{
|
|
int hdr_len = 0;
|
|
|
|
switch (cm_node->mpa_frame_rev) {
|
|
case IETF_MPA_V1:
|
|
hdr_len = sizeof(struct ietf_mpa_v1);
|
|
i40iw_build_mpa_v1(cm_node, mpa->addr, mpa_key);
|
|
break;
|
|
case IETF_MPA_V2:
|
|
hdr_len = sizeof(struct ietf_mpa_v2);
|
|
i40iw_build_mpa_v2(cm_node, mpa->addr, mpa_key);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return hdr_len;
|
|
}
|
|
|
|
/**
|
|
* i40iw_send_mpa_request - active node send mpa request to passive node
|
|
* @cm_node: connection's node
|
|
*/
|
|
static int i40iw_send_mpa_request(struct i40iw_cm_node *cm_node)
|
|
{
|
|
struct i40iw_puda_buf *sqbuf;
|
|
|
|
if (!cm_node) {
|
|
i40iw_pr_err("cm_node == NULL\n");
|
|
return -1;
|
|
}
|
|
|
|
cm_node->mpa_hdr.addr = &cm_node->mpa_frame;
|
|
cm_node->mpa_hdr.size = i40iw_cm_build_mpa_frame(cm_node,
|
|
&cm_node->mpa_hdr,
|
|
MPA_KEY_REQUEST);
|
|
if (!cm_node->mpa_hdr.size) {
|
|
i40iw_pr_err("mpa size = %d\n", cm_node->mpa_hdr.size);
|
|
return -1;
|
|
}
|
|
|
|
sqbuf = i40iw_form_cm_frame(cm_node,
|
|
NULL,
|
|
&cm_node->mpa_hdr,
|
|
&cm_node->pdata,
|
|
SET_ACK);
|
|
if (!sqbuf) {
|
|
i40iw_pr_err("sq_buf == NULL\n");
|
|
return -1;
|
|
}
|
|
return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 1, 0);
|
|
}
|
|
|
|
/**
|
|
* i40iw_send_mpa_reject -
|
|
* @cm_node: connection's node
|
|
* @pdata: reject data for connection
|
|
* @plen: length of reject data
|
|
*/
|
|
static int i40iw_send_mpa_reject(struct i40iw_cm_node *cm_node,
|
|
const void *pdata,
|
|
u8 plen)
|
|
{
|
|
struct i40iw_puda_buf *sqbuf;
|
|
struct i40iw_kmem_info priv_info;
|
|
|
|
cm_node->mpa_hdr.addr = &cm_node->mpa_frame;
|
|
cm_node->mpa_hdr.size = i40iw_cm_build_mpa_frame(cm_node,
|
|
&cm_node->mpa_hdr,
|
|
MPA_KEY_REPLY);
|
|
|
|
cm_node->mpa_frame.flags |= IETF_MPA_FLAGS_REJECT;
|
|
priv_info.addr = (void *)pdata;
|
|
priv_info.size = plen;
|
|
|
|
sqbuf = i40iw_form_cm_frame(cm_node,
|
|
NULL,
|
|
&cm_node->mpa_hdr,
|
|
&priv_info,
|
|
SET_ACK | SET_FIN);
|
|
if (!sqbuf) {
|
|
i40iw_pr_err("no sqbuf\n");
|
|
return -ENOMEM;
|
|
}
|
|
cm_node->state = I40IW_CM_STATE_FIN_WAIT1;
|
|
return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 1, 0);
|
|
}
|
|
|
|
/**
|
|
* recv_mpa - process an IETF MPA frame
|
|
* @cm_node: connection's node
|
|
* @buffer: Data pointer
|
|
* @type: to return accept or reject
|
|
* @len: Len of mpa buffer
|
|
*/
|
|
static int i40iw_parse_mpa(struct i40iw_cm_node *cm_node, u8 *buffer, u32 *type, u32 len)
|
|
{
|
|
struct ietf_mpa_v1 *mpa_frame;
|
|
struct ietf_mpa_v2 *mpa_v2_frame;
|
|
struct ietf_rtr_msg *rtr_msg;
|
|
int mpa_hdr_len;
|
|
int priv_data_len;
|
|
|
|
*type = I40IW_MPA_REQUEST_ACCEPT;
|
|
|
|
if (len < sizeof(struct ietf_mpa_v1)) {
|
|
i40iw_pr_err("ietf buffer small (%x)\n", len);
|
|
return -1;
|
|
}
|
|
|
|
mpa_frame = (struct ietf_mpa_v1 *)buffer;
|
|
mpa_hdr_len = sizeof(struct ietf_mpa_v1);
|
|
priv_data_len = ntohs(mpa_frame->priv_data_len);
|
|
|
|
if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) {
|
|
i40iw_pr_err("large pri_data %d\n", priv_data_len);
|
|
return -1;
|
|
}
|
|
if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) {
|
|
i40iw_pr_err("unsupported mpa rev = %d\n", mpa_frame->rev);
|
|
return -1;
|
|
}
|
|
if (mpa_frame->rev > cm_node->mpa_frame_rev) {
|
|
i40iw_pr_err("rev %d\n", mpa_frame->rev);
|
|
return -1;
|
|
}
|
|
cm_node->mpa_frame_rev = mpa_frame->rev;
|
|
|
|
if (cm_node->state != I40IW_CM_STATE_MPAREQ_SENT) {
|
|
if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) {
|
|
i40iw_pr_err("Unexpected MPA Key received\n");
|
|
return -1;
|
|
}
|
|
} else {
|
|
if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) {
|
|
i40iw_pr_err("Unexpected MPA Key received\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (priv_data_len + mpa_hdr_len > len) {
|
|
i40iw_pr_err("ietf buffer len(%x + %x != %x)\n",
|
|
priv_data_len, mpa_hdr_len, len);
|
|
return -1;
|
|
}
|
|
if (len > MAX_CM_BUFFER) {
|
|
i40iw_pr_err("ietf buffer large len = %d\n", len);
|
|
return -1;
|
|
}
|
|
|
|
switch (mpa_frame->rev) {
|
|
case IETF_MPA_V2:{
|
|
u16 ird_size;
|
|
u16 ord_size;
|
|
u16 ctrl_ord;
|
|
u16 ctrl_ird;
|
|
|
|
mpa_v2_frame = (struct ietf_mpa_v2 *)buffer;
|
|
mpa_hdr_len += IETF_RTR_MSG_SIZE;
|
|
rtr_msg = &mpa_v2_frame->rtr_msg;
|
|
|
|
/* parse rtr message */
|
|
ctrl_ord = ntohs(rtr_msg->ctrl_ord);
|
|
ctrl_ird = ntohs(rtr_msg->ctrl_ird);
|
|
ird_size = ctrl_ird & IETF_NO_IRD_ORD;
|
|
ord_size = ctrl_ord & IETF_NO_IRD_ORD;
|
|
|
|
if (!(ctrl_ird & IETF_PEER_TO_PEER))
|
|
return -1;
|
|
|
|
if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) {
|
|
cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD;
|
|
goto negotiate_done;
|
|
}
|
|
|
|
if (cm_node->state != I40IW_CM_STATE_MPAREQ_SENT) {
|
|
/* responder */
|
|
if (!ord_size && (ctrl_ord & IETF_RDMA0_READ))
|
|
cm_node->ird_size = 1;
|
|
if (cm_node->ord_size > ird_size)
|
|
cm_node->ord_size = ird_size;
|
|
} else {
|
|
/* initiator */
|
|
if (!ird_size && (ctrl_ord & IETF_RDMA0_READ))
|
|
return -1;
|
|
if (cm_node->ord_size > ird_size)
|
|
cm_node->ord_size = ird_size;
|
|
|
|
if (cm_node->ird_size < ord_size)
|
|
/* no resources available */
|
|
return -1;
|
|
}
|
|
|
|
negotiate_done:
|
|
if (ctrl_ord & IETF_RDMA0_READ)
|
|
cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
|
|
else if (ctrl_ord & IETF_RDMA0_WRITE)
|
|
cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO;
|
|
else /* Not supported RDMA0 operation */
|
|
return -1;
|
|
i40iw_debug(cm_node->dev, I40IW_DEBUG_CM,
|
|
"MPAV2: Negotiated ORD: %d, IRD: %d\n",
|
|
cm_node->ord_size, cm_node->ird_size);
|
|
break;
|
|
}
|
|
break;
|
|
case IETF_MPA_V1:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
memcpy(cm_node->pdata_buf, buffer + mpa_hdr_len, priv_data_len);
|
|
cm_node->pdata.size = priv_data_len;
|
|
|
|
if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT)
|
|
*type = I40IW_MPA_REQUEST_REJECT;
|
|
|
|
if (mpa_frame->flags & IETF_MPA_FLAGS_MARKERS)
|
|
cm_node->snd_mark_en = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i40iw_schedule_cm_timer
|
|
* @@cm_node: connection's node
|
|
* @sqbuf: buffer to send
|
|
* @type: if it es send ot close
|
|
* @send_retrans: if rexmits to be done
|
|
* @close_when_complete: is cm_node to be removed
|
|
*
|
|
* note - cm_node needs to be protected before calling this. Encase in:
|
|
* i40iw_rem_ref_cm_node(cm_core, cm_node);
|
|
* i40iw_schedule_cm_timer(...)
|
|
* atomic_inc(&cm_node->ref_count);
|
|
*/
|
|
int i40iw_schedule_cm_timer(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_puda_buf *sqbuf,
|
|
enum i40iw_timer_type type,
|
|
int send_retrans,
|
|
int close_when_complete)
|
|
{
|
|
struct i40iw_sc_dev *dev = cm_node->dev;
|
|
struct i40iw_cm_core *cm_core = cm_node->cm_core;
|
|
struct i40iw_timer_entry *new_send;
|
|
int ret = 0;
|
|
u32 was_timer_set;
|
|
unsigned long flags;
|
|
|
|
new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC);
|
|
if (!new_send) {
|
|
i40iw_free_sqbuf(cm_node->dev, (void *)sqbuf);
|
|
return -ENOMEM;
|
|
}
|
|
new_send->retrycount = I40IW_DEFAULT_RETRYS;
|
|
new_send->retranscount = I40IW_DEFAULT_RETRANS;
|
|
new_send->sqbuf = sqbuf;
|
|
new_send->timetosend = jiffies;
|
|
new_send->type = type;
|
|
new_send->send_retrans = send_retrans;
|
|
new_send->close_when_complete = close_when_complete;
|
|
|
|
if (type == I40IW_TIMER_TYPE_CLOSE) {
|
|
new_send->timetosend += (HZ / 10);
|
|
if (cm_node->close_entry) {
|
|
kfree(new_send);
|
|
i40iw_free_sqbuf(cm_node->dev, (void *)sqbuf);
|
|
i40iw_pr_err("already close entry\n");
|
|
return -EINVAL;
|
|
}
|
|
cm_node->close_entry = new_send;
|
|
}
|
|
|
|
if (type == I40IW_TIMER_TYPE_SEND) {
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
|
|
cm_node->send_entry = new_send;
|
|
atomic_inc(&cm_node->ref_count);
|
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
|
|
new_send->timetosend = jiffies + I40IW_RETRY_TIMEOUT;
|
|
|
|
atomic_inc(&sqbuf->refcount);
|
|
i40iw_puda_send_buf(dev->ilq, sqbuf);
|
|
if (!send_retrans) {
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
if (close_when_complete)
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
was_timer_set = timer_pending(&cm_core->tcp_timer);
|
|
|
|
if (!was_timer_set) {
|
|
cm_core->tcp_timer.expires = new_send->timetosend;
|
|
add_timer(&cm_core->tcp_timer);
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_retrans_expired - Could not rexmit the packet
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void i40iw_retrans_expired(struct i40iw_cm_node *cm_node)
|
|
{
|
|
struct iw_cm_id *cm_id = cm_node->cm_id;
|
|
enum i40iw_cm_node_state state = cm_node->state;
|
|
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
switch (state) {
|
|
case I40IW_CM_STATE_SYN_RCVD:
|
|
case I40IW_CM_STATE_CLOSING:
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_FIN_WAIT1:
|
|
case I40IW_CM_STATE_LAST_ACK:
|
|
if (cm_node->cm_id)
|
|
cm_id->rem_ref(cm_id);
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
default:
|
|
atomic_inc(&cm_node->ref_count);
|
|
i40iw_send_reset(cm_node);
|
|
i40iw_create_event(cm_node, I40IW_CM_EVENT_ABORTED);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_handle_close_entry - for handling retry/timeouts
|
|
* @cm_node: connection's node
|
|
* @rem_node: flag for remove cm_node
|
|
*/
|
|
static void i40iw_handle_close_entry(struct i40iw_cm_node *cm_node, u32 rem_node)
|
|
{
|
|
struct i40iw_timer_entry *close_entry = cm_node->close_entry;
|
|
struct iw_cm_id *cm_id = cm_node->cm_id;
|
|
struct i40iw_qp *iwqp;
|
|
unsigned long flags;
|
|
|
|
if (!close_entry)
|
|
return;
|
|
iwqp = (struct i40iw_qp *)close_entry->sqbuf;
|
|
if (iwqp) {
|
|
spin_lock_irqsave(&iwqp->lock, flags);
|
|
if (iwqp->cm_id) {
|
|
iwqp->hw_tcp_state = I40IW_TCP_STATE_CLOSED;
|
|
iwqp->hw_iwarp_state = I40IW_QP_STATE_ERROR;
|
|
iwqp->last_aeq = I40IW_AE_RESET_SENT;
|
|
iwqp->ibqp_state = IB_QPS_ERR;
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
i40iw_cm_disconn(iwqp);
|
|
} else {
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
}
|
|
} else if (rem_node) {
|
|
/* TIME_WAIT state */
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
}
|
|
if (cm_id)
|
|
cm_id->rem_ref(cm_id);
|
|
kfree(close_entry);
|
|
cm_node->close_entry = NULL;
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_timer_tick - system's timer expired callback
|
|
* @pass: Pointing to cm_core
|
|
*/
|
|
static void i40iw_cm_timer_tick(unsigned long pass)
|
|
{
|
|
unsigned long nexttimeout = jiffies + I40IW_LONG_TIME;
|
|
struct i40iw_cm_node *cm_node;
|
|
struct i40iw_timer_entry *send_entry, *close_entry;
|
|
struct list_head *list_core_temp;
|
|
struct list_head *list_node;
|
|
struct i40iw_cm_core *cm_core = (struct i40iw_cm_core *)pass;
|
|
u32 settimer = 0;
|
|
unsigned long timetosend;
|
|
struct i40iw_sc_dev *dev;
|
|
unsigned long flags;
|
|
|
|
struct list_head timer_list;
|
|
|
|
INIT_LIST_HEAD(&timer_list);
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
|
|
list_for_each_safe(list_node, list_core_temp, &cm_core->connected_nodes) {
|
|
cm_node = container_of(list_node, struct i40iw_cm_node, list);
|
|
if (cm_node->close_entry || cm_node->send_entry) {
|
|
atomic_inc(&cm_node->ref_count);
|
|
list_add(&cm_node->timer_entry, &timer_list);
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
|
|
list_for_each_safe(list_node, list_core_temp, &timer_list) {
|
|
cm_node = container_of(list_node,
|
|
struct i40iw_cm_node,
|
|
timer_entry);
|
|
close_entry = cm_node->close_entry;
|
|
|
|
if (close_entry) {
|
|
if (time_after(close_entry->timetosend, jiffies)) {
|
|
if (nexttimeout > close_entry->timetosend ||
|
|
!settimer) {
|
|
nexttimeout = close_entry->timetosend;
|
|
settimer = 1;
|
|
}
|
|
} else {
|
|
i40iw_handle_close_entry(cm_node, 1);
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
|
|
|
|
send_entry = cm_node->send_entry;
|
|
if (!send_entry)
|
|
goto done;
|
|
if (time_after(send_entry->timetosend, jiffies)) {
|
|
if (cm_node->state != I40IW_CM_STATE_OFFLOADED) {
|
|
if ((nexttimeout > send_entry->timetosend) ||
|
|
!settimer) {
|
|
nexttimeout = send_entry->timetosend;
|
|
settimer = 1;
|
|
}
|
|
} else {
|
|
i40iw_free_retrans_entry(cm_node);
|
|
}
|
|
goto done;
|
|
}
|
|
|
|
if ((cm_node->state == I40IW_CM_STATE_OFFLOADED) ||
|
|
(cm_node->state == I40IW_CM_STATE_CLOSED)) {
|
|
i40iw_free_retrans_entry(cm_node);
|
|
goto done;
|
|
}
|
|
|
|
if (!send_entry->retranscount || !send_entry->retrycount) {
|
|
i40iw_free_retrans_entry(cm_node);
|
|
|
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
|
|
i40iw_retrans_expired(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
|
|
goto done;
|
|
}
|
|
cm_node->cm_core->stats_pkt_retrans++;
|
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
|
|
|
|
dev = cm_node->dev;
|
|
atomic_inc(&send_entry->sqbuf->refcount);
|
|
i40iw_puda_send_buf(dev->ilq, send_entry->sqbuf);
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
|
|
if (send_entry->send_retrans) {
|
|
send_entry->retranscount--;
|
|
timetosend = (I40IW_RETRY_TIMEOUT <<
|
|
(I40IW_DEFAULT_RETRANS -
|
|
send_entry->retranscount));
|
|
|
|
send_entry->timetosend = jiffies +
|
|
min(timetosend, I40IW_MAX_TIMEOUT);
|
|
if (nexttimeout > send_entry->timetosend || !settimer) {
|
|
nexttimeout = send_entry->timetosend;
|
|
settimer = 1;
|
|
}
|
|
} else {
|
|
int close_when_complete;
|
|
|
|
close_when_complete = send_entry->close_when_complete;
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"cm_node=%p state=%d\n",
|
|
cm_node,
|
|
cm_node->state);
|
|
i40iw_free_retrans_entry(cm_node);
|
|
if (close_when_complete)
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
}
|
|
done:
|
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
}
|
|
|
|
if (settimer) {
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
if (!timer_pending(&cm_core->tcp_timer)) {
|
|
cm_core->tcp_timer.expires = nexttimeout;
|
|
add_timer(&cm_core->tcp_timer);
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_send_syn - send SYN packet
|
|
* @cm_node: connection's node
|
|
* @sendack: flag to set ACK bit or not
|
|
*/
|
|
int i40iw_send_syn(struct i40iw_cm_node *cm_node, u32 sendack)
|
|
{
|
|
struct i40iw_puda_buf *sqbuf;
|
|
int flags = SET_SYN;
|
|
char optionsbuffer[sizeof(struct option_mss) +
|
|
sizeof(struct option_windowscale) +
|
|
sizeof(struct option_base) + TCP_OPTIONS_PADDING];
|
|
struct i40iw_kmem_info opts;
|
|
|
|
int optionssize = 0;
|
|
/* Sending MSS option */
|
|
union all_known_options *options;
|
|
|
|
opts.addr = optionsbuffer;
|
|
if (!cm_node) {
|
|
i40iw_pr_err("no cm_node\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
options = (union all_known_options *)&optionsbuffer[optionssize];
|
|
options->as_mss.optionnum = OPTION_NUMBER_MSS;
|
|
options->as_mss.length = sizeof(struct option_mss);
|
|
options->as_mss.mss = htons(cm_node->tcp_cntxt.mss);
|
|
optionssize += sizeof(struct option_mss);
|
|
|
|
options = (union all_known_options *)&optionsbuffer[optionssize];
|
|
options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE;
|
|
options->as_windowscale.length = sizeof(struct option_windowscale);
|
|
options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
|
|
optionssize += sizeof(struct option_windowscale);
|
|
options = (union all_known_options *)&optionsbuffer[optionssize];
|
|
options->as_end = OPTION_NUMBER_END;
|
|
optionssize += 1;
|
|
|
|
if (sendack)
|
|
flags |= SET_ACK;
|
|
|
|
opts.size = optionssize;
|
|
|
|
sqbuf = i40iw_form_cm_frame(cm_node, &opts, NULL, NULL, flags);
|
|
if (!sqbuf) {
|
|
i40iw_pr_err("no sqbuf\n");
|
|
return -1;
|
|
}
|
|
return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 1, 0);
|
|
}
|
|
|
|
/**
|
|
* i40iw_send_ack - Send ACK packet
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void i40iw_send_ack(struct i40iw_cm_node *cm_node)
|
|
{
|
|
struct i40iw_puda_buf *sqbuf;
|
|
|
|
sqbuf = i40iw_form_cm_frame(cm_node, NULL, NULL, NULL, SET_ACK);
|
|
if (sqbuf)
|
|
i40iw_puda_send_buf(cm_node->dev->ilq, sqbuf);
|
|
else
|
|
i40iw_pr_err("no sqbuf\n");
|
|
}
|
|
|
|
/**
|
|
* i40iw_send_fin - Send FIN pkt
|
|
* @cm_node: connection's node
|
|
*/
|
|
static int i40iw_send_fin(struct i40iw_cm_node *cm_node)
|
|
{
|
|
struct i40iw_puda_buf *sqbuf;
|
|
|
|
sqbuf = i40iw_form_cm_frame(cm_node, NULL, NULL, NULL, SET_ACK | SET_FIN);
|
|
if (!sqbuf) {
|
|
i40iw_pr_err("no sqbuf\n");
|
|
return -1;
|
|
}
|
|
return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 1, 0);
|
|
}
|
|
|
|
/**
|
|
* i40iw_find_node - find a cm node that matches the reference cm node
|
|
* @cm_core: cm's core
|
|
* @rem_port: remote tcp port num
|
|
* @rem_addr: remote ip addr
|
|
* @loc_port: local tcp port num
|
|
* @loc_addr: loc ip addr
|
|
* @add_refcnt: flag to increment refcount of cm_node
|
|
*/
|
|
struct i40iw_cm_node *i40iw_find_node(struct i40iw_cm_core *cm_core,
|
|
u16 rem_port,
|
|
u32 *rem_addr,
|
|
u16 loc_port,
|
|
u32 *loc_addr,
|
|
bool add_refcnt)
|
|
{
|
|
struct list_head *hte;
|
|
struct i40iw_cm_node *cm_node;
|
|
unsigned long flags;
|
|
|
|
hte = &cm_core->connected_nodes;
|
|
|
|
/* walk list and find cm_node associated with this session ID */
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
list_for_each_entry(cm_node, hte, list) {
|
|
if (!memcmp(cm_node->loc_addr, loc_addr, sizeof(cm_node->loc_addr)) &&
|
|
(cm_node->loc_port == loc_port) &&
|
|
!memcmp(cm_node->rem_addr, rem_addr, sizeof(cm_node->rem_addr)) &&
|
|
(cm_node->rem_port == rem_port)) {
|
|
if (add_refcnt)
|
|
atomic_inc(&cm_node->ref_count);
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
return cm_node;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
|
|
/* no owner node */
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* i40iw_find_listener - find a cm node listening on this addr-port pair
|
|
* @cm_core: cm's core
|
|
* @dst_port: listener tcp port num
|
|
* @dst_addr: listener ip addr
|
|
* @listener_state: state to match with listen node's
|
|
*/
|
|
static struct i40iw_cm_listener *i40iw_find_listener(
|
|
struct i40iw_cm_core *cm_core,
|
|
u32 *dst_addr,
|
|
u16 dst_port,
|
|
u16 vlan_id,
|
|
enum i40iw_cm_listener_state
|
|
listener_state)
|
|
{
|
|
struct i40iw_cm_listener *listen_node;
|
|
static const u32 ip_zero[4] = { 0, 0, 0, 0 };
|
|
u32 listen_addr[4];
|
|
u16 listen_port;
|
|
unsigned long flags;
|
|
|
|
/* walk list and find cm_node associated with this session ID */
|
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
|
|
list_for_each_entry(listen_node, &cm_core->listen_nodes, list) {
|
|
memcpy(listen_addr, listen_node->loc_addr, sizeof(listen_addr));
|
|
listen_port = listen_node->loc_port;
|
|
/* compare node pair, return node handle if a match */
|
|
if ((!memcmp(listen_addr, dst_addr, sizeof(listen_addr)) ||
|
|
!memcmp(listen_addr, ip_zero, sizeof(listen_addr))) &&
|
|
(listen_port == dst_port) &&
|
|
(listener_state & listen_node->listener_state)) {
|
|
atomic_inc(&listen_node->ref_count);
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
return listen_node;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* i40iw_add_hte_node - add a cm node to the hash table
|
|
* @cm_core: cm's core
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void i40iw_add_hte_node(struct i40iw_cm_core *cm_core,
|
|
struct i40iw_cm_node *cm_node)
|
|
{
|
|
struct list_head *hte;
|
|
unsigned long flags;
|
|
|
|
if (!cm_node || !cm_core) {
|
|
i40iw_pr_err("cm_node or cm_core == NULL\n");
|
|
return;
|
|
}
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
|
|
/* get a handle on the hash table element (list head for this slot) */
|
|
hte = &cm_core->connected_nodes;
|
|
list_add_tail(&cm_node->list, hte);
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* listen_port_in_use - determine if port is in use
|
|
* @port: Listen port number
|
|
*/
|
|
static bool i40iw_listen_port_in_use(struct i40iw_cm_core *cm_core, u16 port)
|
|
{
|
|
struct i40iw_cm_listener *listen_node;
|
|
unsigned long flags;
|
|
bool ret = false;
|
|
|
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
|
|
list_for_each_entry(listen_node, &cm_core->listen_nodes, list) {
|
|
if (listen_node->loc_port == port) {
|
|
ret = true;
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_del_multiple_qhash - Remove qhash and child listens
|
|
* @iwdev: iWarp device
|
|
* @cm_info: CM info for parent listen node
|
|
* @cm_parent_listen_node: The parent listen node
|
|
*/
|
|
static enum i40iw_status_code i40iw_del_multiple_qhash(
|
|
struct i40iw_device *iwdev,
|
|
struct i40iw_cm_info *cm_info,
|
|
struct i40iw_cm_listener *cm_parent_listen_node)
|
|
{
|
|
struct i40iw_cm_listener *child_listen_node;
|
|
enum i40iw_status_code ret = I40IW_ERR_CONFIG;
|
|
struct list_head *pos, *tpos;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
|
|
list_for_each_safe(pos, tpos, &cm_parent_listen_node->child_listen_list) {
|
|
child_listen_node = list_entry(pos, struct i40iw_cm_listener, child_listen_list);
|
|
if (child_listen_node->ipv4)
|
|
i40iw_debug(&iwdev->sc_dev,
|
|
I40IW_DEBUG_CM,
|
|
"removing child listen for IP=%pI4, port=%d, vlan=%d\n",
|
|
child_listen_node->loc_addr,
|
|
child_listen_node->loc_port,
|
|
child_listen_node->vlan_id);
|
|
else
|
|
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
|
|
"removing child listen for IP=%pI6, port=%d, vlan=%d\n",
|
|
child_listen_node->loc_addr,
|
|
child_listen_node->loc_port,
|
|
child_listen_node->vlan_id);
|
|
list_del(pos);
|
|
memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
|
|
sizeof(cm_info->loc_addr));
|
|
cm_info->vlan_id = child_listen_node->vlan_id;
|
|
if (child_listen_node->qhash_set) {
|
|
ret = i40iw_manage_qhash(iwdev, cm_info,
|
|
I40IW_QHASH_TYPE_TCP_SYN,
|
|
I40IW_QHASH_MANAGE_TYPE_DELETE,
|
|
NULL, false);
|
|
child_listen_node->qhash_set = false;
|
|
} else {
|
|
ret = I40IW_SUCCESS;
|
|
}
|
|
i40iw_debug(&iwdev->sc_dev,
|
|
I40IW_DEBUG_CM,
|
|
"freed pointer = %p\n",
|
|
child_listen_node);
|
|
kfree(child_listen_node);
|
|
cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++;
|
|
}
|
|
spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_netdev_vlan_ipv6 - Gets the netdev and mac
|
|
* @addr: local IPv6 address
|
|
* @vlan_id: vlan id for the given IPv6 address
|
|
* @mac: mac address for the given IPv6 address
|
|
*
|
|
* Returns the net_device of the IPv6 address and also sets the
|
|
* vlan id and mac for that address.
|
|
*/
|
|
static struct net_device *i40iw_netdev_vlan_ipv6(u32 *addr, u16 *vlan_id, u8 *mac)
|
|
{
|
|
struct net_device *ip_dev = NULL;
|
|
struct in6_addr laddr6;
|
|
|
|
if (!IS_ENABLED(CONFIG_IPV6))
|
|
return NULL;
|
|
i40iw_copy_ip_htonl(laddr6.in6_u.u6_addr32, addr);
|
|
if (vlan_id)
|
|
*vlan_id = I40IW_NO_VLAN;
|
|
if (mac)
|
|
eth_zero_addr(mac);
|
|
rcu_read_lock();
|
|
for_each_netdev_rcu(&init_net, ip_dev) {
|
|
if (ipv6_chk_addr(&init_net, &laddr6, ip_dev, 1)) {
|
|
if (vlan_id)
|
|
*vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
|
|
if (ip_dev->dev_addr && mac)
|
|
ether_addr_copy(mac, ip_dev->dev_addr);
|
|
break;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
return ip_dev;
|
|
}
|
|
|
|
/**
|
|
* i40iw_get_vlan_ipv4 - Returns the vlan_id for IPv4 address
|
|
* @addr: local IPv4 address
|
|
*/
|
|
static u16 i40iw_get_vlan_ipv4(u32 *addr)
|
|
{
|
|
struct net_device *netdev;
|
|
u16 vlan_id = I40IW_NO_VLAN;
|
|
|
|
netdev = ip_dev_find(&init_net, htonl(addr[0]));
|
|
if (netdev) {
|
|
vlan_id = rdma_vlan_dev_vlan_id(netdev);
|
|
dev_put(netdev);
|
|
}
|
|
return vlan_id;
|
|
}
|
|
|
|
/**
|
|
* i40iw_add_mqh_6 - Adds multiple qhashes for IPv6
|
|
* @iwdev: iWarp device
|
|
* @cm_info: CM info for parent listen node
|
|
* @cm_parent_listen_node: The parent listen node
|
|
*
|
|
* Adds a qhash and a child listen node for every IPv6 address
|
|
* on the adapter and adds the associated qhash filter
|
|
*/
|
|
static enum i40iw_status_code i40iw_add_mqh_6(struct i40iw_device *iwdev,
|
|
struct i40iw_cm_info *cm_info,
|
|
struct i40iw_cm_listener *cm_parent_listen_node)
|
|
{
|
|
struct net_device *ip_dev;
|
|
struct inet6_dev *idev;
|
|
struct inet6_ifaddr *ifp, *tmp;
|
|
enum i40iw_status_code ret = 0;
|
|
struct i40iw_cm_listener *child_listen_node;
|
|
unsigned long flags;
|
|
|
|
rtnl_lock();
|
|
for_each_netdev_rcu(&init_net, ip_dev) {
|
|
if ((((rdma_vlan_dev_vlan_id(ip_dev) < I40IW_NO_VLAN) &&
|
|
(rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
|
|
(ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
|
|
idev = __in6_dev_get(ip_dev);
|
|
if (!idev) {
|
|
i40iw_pr_err("idev == NULL\n");
|
|
break;
|
|
}
|
|
list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) {
|
|
i40iw_debug(&iwdev->sc_dev,
|
|
I40IW_DEBUG_CM,
|
|
"IP=%pI6, vlan_id=%d, MAC=%pM\n",
|
|
&ifp->addr,
|
|
rdma_vlan_dev_vlan_id(ip_dev),
|
|
ip_dev->dev_addr);
|
|
child_listen_node =
|
|
kzalloc(sizeof(*child_listen_node), GFP_ATOMIC);
|
|
i40iw_debug(&iwdev->sc_dev,
|
|
I40IW_DEBUG_CM,
|
|
"Allocating child listener %p\n",
|
|
child_listen_node);
|
|
if (!child_listen_node) {
|
|
i40iw_pr_err("listener memory allocation\n");
|
|
ret = I40IW_ERR_NO_MEMORY;
|
|
goto exit;
|
|
}
|
|
cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
|
|
cm_parent_listen_node->vlan_id = cm_info->vlan_id;
|
|
|
|
memcpy(child_listen_node, cm_parent_listen_node,
|
|
sizeof(*child_listen_node));
|
|
|
|
i40iw_copy_ip_ntohl(child_listen_node->loc_addr,
|
|
ifp->addr.in6_u.u6_addr32);
|
|
memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
|
|
sizeof(cm_info->loc_addr));
|
|
|
|
ret = i40iw_manage_qhash(iwdev, cm_info,
|
|
I40IW_QHASH_TYPE_TCP_SYN,
|
|
I40IW_QHASH_MANAGE_TYPE_ADD,
|
|
NULL, true);
|
|
if (!ret) {
|
|
child_listen_node->qhash_set = true;
|
|
spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
|
|
list_add(&child_listen_node->child_listen_list,
|
|
&cm_parent_listen_node->child_listen_list);
|
|
spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
|
|
cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
|
|
} else {
|
|
kfree(child_listen_node);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
exit:
|
|
rtnl_unlock();
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_add_mqh_4 - Adds multiple qhashes for IPv4
|
|
* @iwdev: iWarp device
|
|
* @cm_info: CM info for parent listen node
|
|
* @cm_parent_listen_node: The parent listen node
|
|
*
|
|
* Adds a qhash and a child listen node for every IPv4 address
|
|
* on the adapter and adds the associated qhash filter
|
|
*/
|
|
static enum i40iw_status_code i40iw_add_mqh_4(
|
|
struct i40iw_device *iwdev,
|
|
struct i40iw_cm_info *cm_info,
|
|
struct i40iw_cm_listener *cm_parent_listen_node)
|
|
{
|
|
struct net_device *dev;
|
|
struct in_device *idev;
|
|
struct i40iw_cm_listener *child_listen_node;
|
|
enum i40iw_status_code ret = 0;
|
|
unsigned long flags;
|
|
|
|
rtnl_lock();
|
|
for_each_netdev(&init_net, dev) {
|
|
if ((((rdma_vlan_dev_vlan_id(dev) < I40IW_NO_VLAN) &&
|
|
(rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) ||
|
|
(dev == iwdev->netdev)) && (dev->flags & IFF_UP)) {
|
|
idev = in_dev_get(dev);
|
|
for_ifa(idev) {
|
|
i40iw_debug(&iwdev->sc_dev,
|
|
I40IW_DEBUG_CM,
|
|
"Allocating child CM Listener forIP=%pI4, vlan_id=%d, MAC=%pM\n",
|
|
&ifa->ifa_address,
|
|
rdma_vlan_dev_vlan_id(dev),
|
|
dev->dev_addr);
|
|
child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_ATOMIC);
|
|
cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
|
|
i40iw_debug(&iwdev->sc_dev,
|
|
I40IW_DEBUG_CM,
|
|
"Allocating child listener %p\n",
|
|
child_listen_node);
|
|
if (!child_listen_node) {
|
|
i40iw_pr_err("listener memory allocation\n");
|
|
in_dev_put(idev);
|
|
ret = I40IW_ERR_NO_MEMORY;
|
|
goto exit;
|
|
}
|
|
cm_info->vlan_id = rdma_vlan_dev_vlan_id(dev);
|
|
cm_parent_listen_node->vlan_id = cm_info->vlan_id;
|
|
memcpy(child_listen_node,
|
|
cm_parent_listen_node,
|
|
sizeof(*child_listen_node));
|
|
|
|
child_listen_node->loc_addr[0] = ntohl(ifa->ifa_address);
|
|
memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
|
|
sizeof(cm_info->loc_addr));
|
|
|
|
ret = i40iw_manage_qhash(iwdev,
|
|
cm_info,
|
|
I40IW_QHASH_TYPE_TCP_SYN,
|
|
I40IW_QHASH_MANAGE_TYPE_ADD,
|
|
NULL,
|
|
true);
|
|
if (!ret) {
|
|
child_listen_node->qhash_set = true;
|
|
spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
|
|
list_add(&child_listen_node->child_listen_list,
|
|
&cm_parent_listen_node->child_listen_list);
|
|
spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
|
|
} else {
|
|
kfree(child_listen_node);
|
|
cm_parent_listen_node->cm_core->stats_listen_nodes_created--;
|
|
}
|
|
}
|
|
endfor_ifa(idev);
|
|
in_dev_put(idev);
|
|
}
|
|
}
|
|
exit:
|
|
rtnl_unlock();
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_dec_refcnt_listen - delete listener and associated cm nodes
|
|
* @cm_core: cm's core
|
|
* @free_hanging_nodes: to free associated cm_nodes
|
|
* @apbvt_del: flag to delete the apbvt
|
|
*/
|
|
static int i40iw_dec_refcnt_listen(struct i40iw_cm_core *cm_core,
|
|
struct i40iw_cm_listener *listener,
|
|
int free_hanging_nodes, bool apbvt_del)
|
|
{
|
|
int ret = -EINVAL;
|
|
int err = 0;
|
|
struct list_head *list_pos;
|
|
struct list_head *list_temp;
|
|
struct i40iw_cm_node *cm_node;
|
|
struct list_head reset_list;
|
|
struct i40iw_cm_info nfo;
|
|
struct i40iw_cm_node *loopback;
|
|
enum i40iw_cm_node_state old_state;
|
|
unsigned long flags;
|
|
|
|
/* free non-accelerated child nodes for this listener */
|
|
INIT_LIST_HEAD(&reset_list);
|
|
if (free_hanging_nodes) {
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
list_for_each_safe(list_pos, list_temp, &cm_core->connected_nodes) {
|
|
cm_node = container_of(list_pos, struct i40iw_cm_node, list);
|
|
if ((cm_node->listener == listener) && !cm_node->accelerated) {
|
|
atomic_inc(&cm_node->ref_count);
|
|
list_add(&cm_node->reset_entry, &reset_list);
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
}
|
|
|
|
list_for_each_safe(list_pos, list_temp, &reset_list) {
|
|
cm_node = container_of(list_pos, struct i40iw_cm_node, reset_entry);
|
|
loopback = cm_node->loopbackpartner;
|
|
if (cm_node->state >= I40IW_CM_STATE_FIN_WAIT1) {
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
} else {
|
|
if (!loopback) {
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
err = i40iw_send_reset(cm_node);
|
|
if (err) {
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_pr_err("send reset\n");
|
|
} else {
|
|
old_state = cm_node->state;
|
|
cm_node->state = I40IW_CM_STATE_LISTENER_DESTROYED;
|
|
if (old_state != I40IW_CM_STATE_MPAREQ_RCVD)
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
}
|
|
} else {
|
|
struct i40iw_cm_event event;
|
|
|
|
event.cm_node = loopback;
|
|
memcpy(event.cm_info.rem_addr,
|
|
loopback->rem_addr, sizeof(event.cm_info.rem_addr));
|
|
memcpy(event.cm_info.loc_addr,
|
|
loopback->loc_addr, sizeof(event.cm_info.loc_addr));
|
|
event.cm_info.rem_port = loopback->rem_port;
|
|
event.cm_info.loc_port = loopback->loc_port;
|
|
event.cm_info.cm_id = loopback->cm_id;
|
|
event.cm_info.ipv4 = loopback->ipv4;
|
|
atomic_inc(&loopback->ref_count);
|
|
loopback->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_event_connect_error(&event);
|
|
cm_node->state = I40IW_CM_STATE_LISTENER_DESTROYED;
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!atomic_dec_return(&listener->ref_count)) {
|
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
|
|
list_del(&listener->list);
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
|
|
if (listener->iwdev) {
|
|
if (apbvt_del && !i40iw_listen_port_in_use(cm_core, listener->loc_port))
|
|
i40iw_manage_apbvt(listener->iwdev,
|
|
listener->loc_port,
|
|
I40IW_MANAGE_APBVT_DEL);
|
|
|
|
memcpy(nfo.loc_addr, listener->loc_addr, sizeof(nfo.loc_addr));
|
|
nfo.loc_port = listener->loc_port;
|
|
nfo.ipv4 = listener->ipv4;
|
|
nfo.vlan_id = listener->vlan_id;
|
|
nfo.user_pri = listener->user_pri;
|
|
|
|
if (!list_empty(&listener->child_listen_list)) {
|
|
i40iw_del_multiple_qhash(listener->iwdev, &nfo, listener);
|
|
} else {
|
|
if (listener->qhash_set)
|
|
i40iw_manage_qhash(listener->iwdev,
|
|
&nfo,
|
|
I40IW_QHASH_TYPE_TCP_SYN,
|
|
I40IW_QHASH_MANAGE_TYPE_DELETE,
|
|
NULL,
|
|
false);
|
|
}
|
|
}
|
|
|
|
cm_core->stats_listen_destroyed++;
|
|
kfree(listener);
|
|
cm_core->stats_listen_nodes_destroyed++;
|
|
listener = NULL;
|
|
ret = 0;
|
|
}
|
|
|
|
if (listener) {
|
|
if (atomic_read(&listener->pend_accepts_cnt) > 0)
|
|
i40iw_debug(cm_core->dev,
|
|
I40IW_DEBUG_CM,
|
|
"%s: listener (%p) pending accepts=%u\n",
|
|
__func__,
|
|
listener,
|
|
atomic_read(&listener->pend_accepts_cnt));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_del_listen - delete a linstener
|
|
* @cm_core: cm's core
|
|
* @listener: passive connection's listener
|
|
* @apbvt_del: flag to delete apbvt
|
|
*/
|
|
static int i40iw_cm_del_listen(struct i40iw_cm_core *cm_core,
|
|
struct i40iw_cm_listener *listener,
|
|
bool apbvt_del)
|
|
{
|
|
listener->listener_state = I40IW_CM_LISTENER_PASSIVE_STATE;
|
|
listener->cm_id = NULL; /* going to be destroyed pretty soon */
|
|
return i40iw_dec_refcnt_listen(cm_core, listener, 1, apbvt_del);
|
|
}
|
|
|
|
/**
|
|
* i40iw_addr_resolve_neigh - resolve neighbor address
|
|
* @iwdev: iwarp device structure
|
|
* @src_ip: local ip address
|
|
* @dst_ip: remote ip address
|
|
* @arpindex: if there is an arp entry
|
|
*/
|
|
static int i40iw_addr_resolve_neigh(struct i40iw_device *iwdev,
|
|
u32 src_ip,
|
|
u32 dst_ip,
|
|
int arpindex)
|
|
{
|
|
struct rtable *rt;
|
|
struct neighbour *neigh;
|
|
int rc = arpindex;
|
|
struct net_device *netdev = iwdev->netdev;
|
|
__be32 dst_ipaddr = htonl(dst_ip);
|
|
__be32 src_ipaddr = htonl(src_ip);
|
|
|
|
rt = ip_route_output(&init_net, dst_ipaddr, src_ipaddr, 0, 0);
|
|
if (IS_ERR(rt)) {
|
|
i40iw_pr_err("ip_route_output\n");
|
|
return rc;
|
|
}
|
|
|
|
if (netif_is_bond_slave(netdev))
|
|
netdev = netdev_master_upper_dev_get(netdev);
|
|
|
|
neigh = dst_neigh_lookup(&rt->dst, &dst_ipaddr);
|
|
|
|
rcu_read_lock();
|
|
if (neigh) {
|
|
if (neigh->nud_state & NUD_VALID) {
|
|
if (arpindex >= 0) {
|
|
if (ether_addr_equal(iwdev->arp_table[arpindex].mac_addr,
|
|
neigh->ha))
|
|
/* Mac address same as arp table */
|
|
goto resolve_neigh_exit;
|
|
i40iw_manage_arp_cache(iwdev,
|
|
iwdev->arp_table[arpindex].mac_addr,
|
|
&dst_ip,
|
|
true,
|
|
I40IW_ARP_DELETE);
|
|
}
|
|
|
|
i40iw_manage_arp_cache(iwdev, neigh->ha, &dst_ip, true, I40IW_ARP_ADD);
|
|
rc = i40iw_arp_table(iwdev, &dst_ip, true, NULL, I40IW_ARP_RESOLVE);
|
|
} else {
|
|
neigh_event_send(neigh, NULL);
|
|
}
|
|
}
|
|
resolve_neigh_exit:
|
|
|
|
rcu_read_unlock();
|
|
if (neigh)
|
|
neigh_release(neigh);
|
|
|
|
ip_rt_put(rt);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* i40iw_get_dst_ipv6
|
|
*/
|
|
static struct dst_entry *i40iw_get_dst_ipv6(struct sockaddr_in6 *src_addr,
|
|
struct sockaddr_in6 *dst_addr)
|
|
{
|
|
struct dst_entry *dst;
|
|
struct flowi6 fl6;
|
|
|
|
memset(&fl6, 0, sizeof(fl6));
|
|
fl6.daddr = dst_addr->sin6_addr;
|
|
fl6.saddr = src_addr->sin6_addr;
|
|
if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
|
|
fl6.flowi6_oif = dst_addr->sin6_scope_id;
|
|
|
|
dst = ip6_route_output(&init_net, NULL, &fl6);
|
|
return dst;
|
|
}
|
|
|
|
/**
|
|
* i40iw_addr_resolve_neigh_ipv6 - resolve neighbor ipv6 address
|
|
* @iwdev: iwarp device structure
|
|
* @dst_ip: remote ip address
|
|
* @arpindex: if there is an arp entry
|
|
*/
|
|
static int i40iw_addr_resolve_neigh_ipv6(struct i40iw_device *iwdev,
|
|
u32 *src,
|
|
u32 *dest,
|
|
int arpindex)
|
|
{
|
|
struct neighbour *neigh;
|
|
int rc = arpindex;
|
|
struct net_device *netdev = iwdev->netdev;
|
|
struct dst_entry *dst;
|
|
struct sockaddr_in6 dst_addr;
|
|
struct sockaddr_in6 src_addr;
|
|
|
|
memset(&dst_addr, 0, sizeof(dst_addr));
|
|
dst_addr.sin6_family = AF_INET6;
|
|
i40iw_copy_ip_htonl(dst_addr.sin6_addr.in6_u.u6_addr32, dest);
|
|
memset(&src_addr, 0, sizeof(src_addr));
|
|
src_addr.sin6_family = AF_INET6;
|
|
i40iw_copy_ip_htonl(src_addr.sin6_addr.in6_u.u6_addr32, src);
|
|
dst = i40iw_get_dst_ipv6(&src_addr, &dst_addr);
|
|
if (!dst || dst->error) {
|
|
if (dst) {
|
|
dst_release(dst);
|
|
i40iw_pr_err("ip6_route_output returned dst->error = %d\n",
|
|
dst->error);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
if (netif_is_bond_slave(netdev))
|
|
netdev = netdev_master_upper_dev_get(netdev);
|
|
|
|
neigh = dst_neigh_lookup(dst, &dst_addr);
|
|
|
|
rcu_read_lock();
|
|
if (neigh) {
|
|
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM, "dst_neigh_lookup MAC=%pM\n", neigh->ha);
|
|
if (neigh->nud_state & NUD_VALID) {
|
|
if (arpindex >= 0) {
|
|
if (ether_addr_equal
|
|
(iwdev->arp_table[arpindex].mac_addr,
|
|
neigh->ha)) {
|
|
/* Mac address same as in arp table */
|
|
goto resolve_neigh_exit6;
|
|
}
|
|
i40iw_manage_arp_cache(iwdev,
|
|
iwdev->arp_table[arpindex].mac_addr,
|
|
dest,
|
|
false,
|
|
I40IW_ARP_DELETE);
|
|
}
|
|
i40iw_manage_arp_cache(iwdev,
|
|
neigh->ha,
|
|
dest,
|
|
false,
|
|
I40IW_ARP_ADD);
|
|
rc = i40iw_arp_table(iwdev,
|
|
dest,
|
|
false,
|
|
NULL,
|
|
I40IW_ARP_RESOLVE);
|
|
} else {
|
|
neigh_event_send(neigh, NULL);
|
|
}
|
|
}
|
|
|
|
resolve_neigh_exit6:
|
|
rcu_read_unlock();
|
|
if (neigh)
|
|
neigh_release(neigh);
|
|
dst_release(dst);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* i40iw_ipv4_is_loopback - check if loopback
|
|
* @loc_addr: local addr to compare
|
|
* @rem_addr: remote address
|
|
*/
|
|
static bool i40iw_ipv4_is_loopback(u32 loc_addr, u32 rem_addr)
|
|
{
|
|
return ipv4_is_loopback(htonl(rem_addr)) || (loc_addr == rem_addr);
|
|
}
|
|
|
|
/**
|
|
* i40iw_ipv6_is_loopback - check if loopback
|
|
* @loc_addr: local addr to compare
|
|
* @rem_addr: remote address
|
|
*/
|
|
static bool i40iw_ipv6_is_loopback(u32 *loc_addr, u32 *rem_addr)
|
|
{
|
|
struct in6_addr raddr6;
|
|
|
|
i40iw_copy_ip_htonl(raddr6.in6_u.u6_addr32, rem_addr);
|
|
return !memcmp(loc_addr, rem_addr, 16) || ipv6_addr_loopback(&raddr6);
|
|
}
|
|
|
|
/**
|
|
* i40iw_make_cm_node - create a new instance of a cm node
|
|
* @cm_core: cm's core
|
|
* @iwdev: iwarp device structure
|
|
* @cm_info: quad info for connection
|
|
* @listener: passive connection's listener
|
|
*/
|
|
static struct i40iw_cm_node *i40iw_make_cm_node(
|
|
struct i40iw_cm_core *cm_core,
|
|
struct i40iw_device *iwdev,
|
|
struct i40iw_cm_info *cm_info,
|
|
struct i40iw_cm_listener *listener)
|
|
{
|
|
struct i40iw_cm_node *cm_node;
|
|
struct timespec ts;
|
|
int oldarpindex;
|
|
int arpindex;
|
|
struct net_device *netdev = iwdev->netdev;
|
|
|
|
/* create an hte and cm_node for this instance */
|
|
cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC);
|
|
if (!cm_node)
|
|
return NULL;
|
|
|
|
/* set our node specific transport info */
|
|
cm_node->ipv4 = cm_info->ipv4;
|
|
cm_node->vlan_id = cm_info->vlan_id;
|
|
if ((cm_node->vlan_id == I40IW_NO_VLAN) && iwdev->dcb)
|
|
cm_node->vlan_id = 0;
|
|
cm_node->user_pri = cm_info->user_pri;
|
|
if (listener)
|
|
cm_node->user_pri = listener->user_pri;
|
|
memcpy(cm_node->loc_addr, cm_info->loc_addr, sizeof(cm_node->loc_addr));
|
|
memcpy(cm_node->rem_addr, cm_info->rem_addr, sizeof(cm_node->rem_addr));
|
|
cm_node->loc_port = cm_info->loc_port;
|
|
cm_node->rem_port = cm_info->rem_port;
|
|
|
|
cm_node->mpa_frame_rev = iwdev->mpa_version;
|
|
cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
|
|
cm_node->ird_size = I40IW_MAX_IRD_SIZE;
|
|
cm_node->ord_size = I40IW_MAX_ORD_SIZE;
|
|
|
|
cm_node->listener = listener;
|
|
cm_node->cm_id = cm_info->cm_id;
|
|
ether_addr_copy(cm_node->loc_mac, netdev->dev_addr);
|
|
spin_lock_init(&cm_node->retrans_list_lock);
|
|
|
|
atomic_set(&cm_node->ref_count, 1);
|
|
/* associate our parent CM core */
|
|
cm_node->cm_core = cm_core;
|
|
cm_node->tcp_cntxt.loc_id = I40IW_CM_DEF_LOCAL_ID;
|
|
cm_node->tcp_cntxt.rcv_wscale = I40IW_CM_DEFAULT_RCV_WND_SCALE;
|
|
cm_node->tcp_cntxt.rcv_wnd =
|
|
I40IW_CM_DEFAULT_RCV_WND_SCALED >> I40IW_CM_DEFAULT_RCV_WND_SCALE;
|
|
ts = current_kernel_time();
|
|
cm_node->tcp_cntxt.loc_seq_num = ts.tv_nsec;
|
|
cm_node->tcp_cntxt.mss = iwdev->mss;
|
|
|
|
cm_node->iwdev = iwdev;
|
|
cm_node->dev = &iwdev->sc_dev;
|
|
|
|
if ((cm_node->ipv4 &&
|
|
i40iw_ipv4_is_loopback(cm_node->loc_addr[0], cm_node->rem_addr[0])) ||
|
|
(!cm_node->ipv4 && i40iw_ipv6_is_loopback(cm_node->loc_addr,
|
|
cm_node->rem_addr))) {
|
|
arpindex = i40iw_arp_table(iwdev,
|
|
cm_node->rem_addr,
|
|
false,
|
|
NULL,
|
|
I40IW_ARP_RESOLVE);
|
|
} else {
|
|
oldarpindex = i40iw_arp_table(iwdev,
|
|
cm_node->rem_addr,
|
|
false,
|
|
NULL,
|
|
I40IW_ARP_RESOLVE);
|
|
if (cm_node->ipv4)
|
|
arpindex = i40iw_addr_resolve_neigh(iwdev,
|
|
cm_info->loc_addr[0],
|
|
cm_info->rem_addr[0],
|
|
oldarpindex);
|
|
else if (IS_ENABLED(CONFIG_IPV6))
|
|
arpindex = i40iw_addr_resolve_neigh_ipv6(iwdev,
|
|
cm_info->loc_addr,
|
|
cm_info->rem_addr,
|
|
oldarpindex);
|
|
else
|
|
arpindex = -EINVAL;
|
|
}
|
|
if (arpindex < 0) {
|
|
i40iw_pr_err("cm_node arpindex\n");
|
|
kfree(cm_node);
|
|
return NULL;
|
|
}
|
|
ether_addr_copy(cm_node->rem_mac, iwdev->arp_table[arpindex].mac_addr);
|
|
i40iw_add_hte_node(cm_core, cm_node);
|
|
cm_core->stats_nodes_created++;
|
|
return cm_node;
|
|
}
|
|
|
|
/**
|
|
* i40iw_rem_ref_cm_node - destroy an instance of a cm node
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void i40iw_rem_ref_cm_node(struct i40iw_cm_node *cm_node)
|
|
{
|
|
struct i40iw_cm_core *cm_core = cm_node->cm_core;
|
|
struct i40iw_qp *iwqp;
|
|
struct i40iw_cm_info nfo;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags);
|
|
if (atomic_dec_return(&cm_node->ref_count)) {
|
|
spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags);
|
|
return;
|
|
}
|
|
list_del(&cm_node->list);
|
|
spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags);
|
|
|
|
/* if the node is destroyed before connection was accelerated */
|
|
if (!cm_node->accelerated && cm_node->accept_pend) {
|
|
pr_err("node destroyed before established\n");
|
|
atomic_dec(&cm_node->listener->pend_accepts_cnt);
|
|
}
|
|
if (cm_node->close_entry)
|
|
i40iw_handle_close_entry(cm_node, 0);
|
|
if (cm_node->listener) {
|
|
i40iw_dec_refcnt_listen(cm_core, cm_node->listener, 0, true);
|
|
} else {
|
|
if (!i40iw_listen_port_in_use(cm_core, cm_node->loc_port) &&
|
|
cm_node->apbvt_set) {
|
|
i40iw_manage_apbvt(cm_node->iwdev,
|
|
cm_node->loc_port,
|
|
I40IW_MANAGE_APBVT_DEL);
|
|
i40iw_get_addr_info(cm_node, &nfo);
|
|
if (cm_node->qhash_set) {
|
|
i40iw_manage_qhash(cm_node->iwdev,
|
|
&nfo,
|
|
I40IW_QHASH_TYPE_TCP_ESTABLISHED,
|
|
I40IW_QHASH_MANAGE_TYPE_DELETE,
|
|
NULL,
|
|
false);
|
|
cm_node->qhash_set = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
iwqp = cm_node->iwqp;
|
|
if (iwqp) {
|
|
iwqp->cm_node = NULL;
|
|
i40iw_rem_ref(&iwqp->ibqp);
|
|
cm_node->iwqp = NULL;
|
|
} else if (cm_node->qhash_set) {
|
|
i40iw_get_addr_info(cm_node, &nfo);
|
|
i40iw_manage_qhash(cm_node->iwdev,
|
|
&nfo,
|
|
I40IW_QHASH_TYPE_TCP_ESTABLISHED,
|
|
I40IW_QHASH_MANAGE_TYPE_DELETE,
|
|
NULL,
|
|
false);
|
|
cm_node->qhash_set = 0;
|
|
}
|
|
|
|
cm_node->cm_core->stats_nodes_destroyed++;
|
|
kfree(cm_node);
|
|
}
|
|
|
|
/**
|
|
* i40iw_handle_fin_pkt - FIN packet received
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void i40iw_handle_fin_pkt(struct i40iw_cm_node *cm_node)
|
|
{
|
|
u32 ret;
|
|
|
|
switch (cm_node->state) {
|
|
case I40IW_CM_STATE_SYN_RCVD:
|
|
case I40IW_CM_STATE_SYN_SENT:
|
|
case I40IW_CM_STATE_ESTABLISHED:
|
|
case I40IW_CM_STATE_MPAREJ_RCVD:
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_LAST_ACK;
|
|
i40iw_send_fin(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_MPAREQ_SENT:
|
|
i40iw_create_event(cm_node, I40IW_CM_EVENT_ABORTED);
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
atomic_inc(&cm_node->ref_count);
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_FIN_WAIT1:
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_CLOSING;
|
|
i40iw_send_ack(cm_node);
|
|
/*
|
|
* Wait for ACK as this is simultaneous close.
|
|
* After we receive ACK, do not send anything.
|
|
* Just rm the node.
|
|
*/
|
|
break;
|
|
case I40IW_CM_STATE_FIN_WAIT2:
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_TIME_WAIT;
|
|
i40iw_send_ack(cm_node);
|
|
ret =
|
|
i40iw_schedule_cm_timer(cm_node, NULL, I40IW_TIMER_TYPE_CLOSE, 1, 0);
|
|
if (ret)
|
|
i40iw_pr_err("node %p state = %d\n", cm_node, cm_node->state);
|
|
break;
|
|
case I40IW_CM_STATE_TIME_WAIT:
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_OFFLOADED:
|
|
default:
|
|
i40iw_pr_err("bad state node %p state = %d\n", cm_node, cm_node->state);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_handle_rst_pkt - process received RST packet
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void i40iw_handle_rst_pkt(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_puda_buf *rbuf)
|
|
{
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
switch (cm_node->state) {
|
|
case I40IW_CM_STATE_SYN_SENT:
|
|
case I40IW_CM_STATE_MPAREQ_SENT:
|
|
switch (cm_node->mpa_frame_rev) {
|
|
case IETF_MPA_V2:
|
|
cm_node->mpa_frame_rev = IETF_MPA_V1;
|
|
/* send a syn and goto syn sent state */
|
|
cm_node->state = I40IW_CM_STATE_SYN_SENT;
|
|
if (i40iw_send_syn(cm_node, 0))
|
|
i40iw_active_open_err(cm_node, false);
|
|
break;
|
|
case IETF_MPA_V1:
|
|
default:
|
|
i40iw_active_open_err(cm_node, false);
|
|
break;
|
|
}
|
|
break;
|
|
case I40IW_CM_STATE_MPAREQ_RCVD:
|
|
atomic_add_return(1, &cm_node->passive_state);
|
|
break;
|
|
case I40IW_CM_STATE_ESTABLISHED:
|
|
case I40IW_CM_STATE_SYN_RCVD:
|
|
case I40IW_CM_STATE_LISTENING:
|
|
i40iw_pr_err("Bad state state = %d\n", cm_node->state);
|
|
i40iw_passive_open_err(cm_node, false);
|
|
break;
|
|
case I40IW_CM_STATE_OFFLOADED:
|
|
i40iw_active_open_err(cm_node, false);
|
|
break;
|
|
case I40IW_CM_STATE_CLOSED:
|
|
break;
|
|
case I40IW_CM_STATE_FIN_WAIT2:
|
|
case I40IW_CM_STATE_FIN_WAIT1:
|
|
case I40IW_CM_STATE_LAST_ACK:
|
|
cm_node->cm_id->rem_ref(cm_node->cm_id);
|
|
case I40IW_CM_STATE_TIME_WAIT:
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_handle_rcv_mpa - Process a recv'd mpa buffer
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void i40iw_handle_rcv_mpa(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_puda_buf *rbuf)
|
|
{
|
|
int ret;
|
|
int datasize = rbuf->datalen;
|
|
u8 *dataloc = rbuf->data;
|
|
|
|
enum i40iw_cm_event_type type = I40IW_CM_EVENT_UNKNOWN;
|
|
u32 res_type;
|
|
|
|
ret = i40iw_parse_mpa(cm_node, dataloc, &res_type, datasize);
|
|
if (ret) {
|
|
if (cm_node->state == I40IW_CM_STATE_MPAREQ_SENT)
|
|
i40iw_active_open_err(cm_node, true);
|
|
else
|
|
i40iw_passive_open_err(cm_node, true);
|
|
return;
|
|
}
|
|
|
|
switch (cm_node->state) {
|
|
case I40IW_CM_STATE_ESTABLISHED:
|
|
if (res_type == I40IW_MPA_REQUEST_REJECT)
|
|
i40iw_pr_err("state for reject\n");
|
|
cm_node->state = I40IW_CM_STATE_MPAREQ_RCVD;
|
|
type = I40IW_CM_EVENT_MPA_REQ;
|
|
i40iw_send_ack(cm_node); /* ACK received MPA request */
|
|
atomic_set(&cm_node->passive_state,
|
|
I40IW_PASSIVE_STATE_INDICATED);
|
|
break;
|
|
case I40IW_CM_STATE_MPAREQ_SENT:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
if (res_type == I40IW_MPA_REQUEST_REJECT) {
|
|
type = I40IW_CM_EVENT_MPA_REJECT;
|
|
cm_node->state = I40IW_CM_STATE_MPAREJ_RCVD;
|
|
} else {
|
|
type = I40IW_CM_EVENT_CONNECTED;
|
|
cm_node->state = I40IW_CM_STATE_OFFLOADED;
|
|
i40iw_send_ack(cm_node);
|
|
}
|
|
break;
|
|
default:
|
|
pr_err("%s wrong cm_node state =%d\n", __func__, cm_node->state);
|
|
break;
|
|
}
|
|
i40iw_create_event(cm_node, type);
|
|
}
|
|
|
|
/**
|
|
* i40iw_indicate_pkt_err - Send up err event to cm
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void i40iw_indicate_pkt_err(struct i40iw_cm_node *cm_node)
|
|
{
|
|
switch (cm_node->state) {
|
|
case I40IW_CM_STATE_SYN_SENT:
|
|
case I40IW_CM_STATE_MPAREQ_SENT:
|
|
i40iw_active_open_err(cm_node, true);
|
|
break;
|
|
case I40IW_CM_STATE_ESTABLISHED:
|
|
case I40IW_CM_STATE_SYN_RCVD:
|
|
i40iw_passive_open_err(cm_node, true);
|
|
break;
|
|
case I40IW_CM_STATE_OFFLOADED:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_check_syn - Check for error on received syn ack
|
|
* @cm_node: connection's node
|
|
* @tcph: pointer tcp header
|
|
*/
|
|
static int i40iw_check_syn(struct i40iw_cm_node *cm_node, struct tcphdr *tcph)
|
|
{
|
|
int err = 0;
|
|
|
|
if (ntohl(tcph->ack_seq) != cm_node->tcp_cntxt.loc_seq_num) {
|
|
err = 1;
|
|
i40iw_active_open_err(cm_node, true);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* i40iw_check_seq - check seq numbers if OK
|
|
* @cm_node: connection's node
|
|
* @tcph: pointer tcp header
|
|
*/
|
|
static int i40iw_check_seq(struct i40iw_cm_node *cm_node, struct tcphdr *tcph)
|
|
{
|
|
int err = 0;
|
|
u32 seq;
|
|
u32 ack_seq;
|
|
u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
|
|
u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
|
|
u32 rcv_wnd;
|
|
|
|
seq = ntohl(tcph->seq);
|
|
ack_seq = ntohl(tcph->ack_seq);
|
|
rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
|
|
if (ack_seq != loc_seq_num)
|
|
err = -1;
|
|
else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd)))
|
|
err = -1;
|
|
if (err) {
|
|
i40iw_pr_err("seq number\n");
|
|
i40iw_indicate_pkt_err(cm_node);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* i40iw_handle_syn_pkt - is for Passive node
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void i40iw_handle_syn_pkt(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_puda_buf *rbuf)
|
|
{
|
|
struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
|
|
int ret;
|
|
u32 inc_sequence;
|
|
int optionsize;
|
|
struct i40iw_cm_info nfo;
|
|
|
|
optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
|
|
inc_sequence = ntohl(tcph->seq);
|
|
|
|
switch (cm_node->state) {
|
|
case I40IW_CM_STATE_SYN_SENT:
|
|
case I40IW_CM_STATE_MPAREQ_SENT:
|
|
/* Rcvd syn on active open connection */
|
|
i40iw_active_open_err(cm_node, 1);
|
|
break;
|
|
case I40IW_CM_STATE_LISTENING:
|
|
/* Passive OPEN */
|
|
if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
|
|
cm_node->listener->backlog) {
|
|
cm_node->cm_core->stats_backlog_drops++;
|
|
i40iw_passive_open_err(cm_node, false);
|
|
break;
|
|
}
|
|
ret = i40iw_handle_tcp_options(cm_node, tcph, optionsize, 1);
|
|
if (ret) {
|
|
i40iw_passive_open_err(cm_node, false);
|
|
/* drop pkt */
|
|
break;
|
|
}
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
|
|
cm_node->accept_pend = 1;
|
|
atomic_inc(&cm_node->listener->pend_accepts_cnt);
|
|
|
|
cm_node->state = I40IW_CM_STATE_SYN_RCVD;
|
|
i40iw_get_addr_info(cm_node, &nfo);
|
|
ret = i40iw_manage_qhash(cm_node->iwdev,
|
|
&nfo,
|
|
I40IW_QHASH_TYPE_TCP_ESTABLISHED,
|
|
I40IW_QHASH_MANAGE_TYPE_ADD,
|
|
(void *)cm_node,
|
|
false);
|
|
cm_node->qhash_set = true;
|
|
break;
|
|
case I40IW_CM_STATE_CLOSED:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
atomic_inc(&cm_node->ref_count);
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_OFFLOADED:
|
|
case I40IW_CM_STATE_ESTABLISHED:
|
|
case I40IW_CM_STATE_FIN_WAIT1:
|
|
case I40IW_CM_STATE_FIN_WAIT2:
|
|
case I40IW_CM_STATE_MPAREQ_RCVD:
|
|
case I40IW_CM_STATE_LAST_ACK:
|
|
case I40IW_CM_STATE_CLOSING:
|
|
case I40IW_CM_STATE_UNKNOWN:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_handle_synack_pkt - Process SYN+ACK packet (active side)
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void i40iw_handle_synack_pkt(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_puda_buf *rbuf)
|
|
{
|
|
struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
|
|
int ret;
|
|
u32 inc_sequence;
|
|
int optionsize;
|
|
|
|
optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
|
|
inc_sequence = ntohl(tcph->seq);
|
|
switch (cm_node->state) {
|
|
case I40IW_CM_STATE_SYN_SENT:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
/* active open */
|
|
if (i40iw_check_syn(cm_node, tcph)) {
|
|
i40iw_pr_err("check syn fail\n");
|
|
return;
|
|
}
|
|
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
|
|
/* setup options */
|
|
ret = i40iw_handle_tcp_options(cm_node, tcph, optionsize, 0);
|
|
if (ret) {
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"cm_node=%p tcp_options failed\n",
|
|
cm_node);
|
|
break;
|
|
}
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
|
|
i40iw_send_ack(cm_node); /* ACK for the syn_ack */
|
|
ret = i40iw_send_mpa_request(cm_node);
|
|
if (ret) {
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"cm_node=%p i40iw_send_mpa_request failed\n",
|
|
cm_node);
|
|
break;
|
|
}
|
|
cm_node->state = I40IW_CM_STATE_MPAREQ_SENT;
|
|
break;
|
|
case I40IW_CM_STATE_MPAREQ_RCVD:
|
|
i40iw_passive_open_err(cm_node, true);
|
|
break;
|
|
case I40IW_CM_STATE_LISTENING:
|
|
cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_CLOSED:
|
|
cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
atomic_inc(&cm_node->ref_count);
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_ESTABLISHED:
|
|
case I40IW_CM_STATE_FIN_WAIT1:
|
|
case I40IW_CM_STATE_FIN_WAIT2:
|
|
case I40IW_CM_STATE_LAST_ACK:
|
|
case I40IW_CM_STATE_OFFLOADED:
|
|
case I40IW_CM_STATE_CLOSING:
|
|
case I40IW_CM_STATE_UNKNOWN:
|
|
case I40IW_CM_STATE_MPAREQ_SENT:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_handle_ack_pkt - process packet with ACK
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static int i40iw_handle_ack_pkt(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_puda_buf *rbuf)
|
|
{
|
|
struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
|
|
u32 inc_sequence;
|
|
int ret = 0;
|
|
int optionsize;
|
|
u32 datasize = rbuf->datalen;
|
|
|
|
optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
|
|
|
|
if (i40iw_check_seq(cm_node, tcph))
|
|
return -EINVAL;
|
|
|
|
inc_sequence = ntohl(tcph->seq);
|
|
switch (cm_node->state) {
|
|
case I40IW_CM_STATE_SYN_RCVD:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
ret = i40iw_handle_tcp_options(cm_node, tcph, optionsize, 1);
|
|
if (ret)
|
|
break;
|
|
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
|
|
cm_node->state = I40IW_CM_STATE_ESTABLISHED;
|
|
if (datasize) {
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
|
|
i40iw_handle_rcv_mpa(cm_node, rbuf);
|
|
}
|
|
break;
|
|
case I40IW_CM_STATE_ESTABLISHED:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
if (datasize) {
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
|
|
i40iw_handle_rcv_mpa(cm_node, rbuf);
|
|
}
|
|
break;
|
|
case I40IW_CM_STATE_MPAREQ_SENT:
|
|
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
|
|
if (datasize) {
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
|
|
i40iw_handle_rcv_mpa(cm_node, rbuf);
|
|
}
|
|
break;
|
|
case I40IW_CM_STATE_LISTENING:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_CLOSED:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
atomic_inc(&cm_node->ref_count);
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_LAST_ACK:
|
|
case I40IW_CM_STATE_CLOSING:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
if (!cm_node->accept_pend)
|
|
cm_node->cm_id->rem_ref(cm_node->cm_id);
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_FIN_WAIT1:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = I40IW_CM_STATE_FIN_WAIT2;
|
|
break;
|
|
case I40IW_CM_STATE_SYN_SENT:
|
|
case I40IW_CM_STATE_FIN_WAIT2:
|
|
case I40IW_CM_STATE_OFFLOADED:
|
|
case I40IW_CM_STATE_MPAREQ_RCVD:
|
|
case I40IW_CM_STATE_UNKNOWN:
|
|
default:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_process_packet - process cm packet
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void i40iw_process_packet(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_puda_buf *rbuf)
|
|
{
|
|
enum i40iw_tcpip_pkt_type pkt_type = I40IW_PKT_TYPE_UNKNOWN;
|
|
struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
|
|
u32 fin_set = 0;
|
|
int ret;
|
|
|
|
if (tcph->rst) {
|
|
pkt_type = I40IW_PKT_TYPE_RST;
|
|
} else if (tcph->syn) {
|
|
pkt_type = I40IW_PKT_TYPE_SYN;
|
|
if (tcph->ack)
|
|
pkt_type = I40IW_PKT_TYPE_SYNACK;
|
|
} else if (tcph->ack) {
|
|
pkt_type = I40IW_PKT_TYPE_ACK;
|
|
}
|
|
if (tcph->fin)
|
|
fin_set = 1;
|
|
|
|
switch (pkt_type) {
|
|
case I40IW_PKT_TYPE_SYN:
|
|
i40iw_handle_syn_pkt(cm_node, rbuf);
|
|
break;
|
|
case I40IW_PKT_TYPE_SYNACK:
|
|
i40iw_handle_synack_pkt(cm_node, rbuf);
|
|
break;
|
|
case I40IW_PKT_TYPE_ACK:
|
|
ret = i40iw_handle_ack_pkt(cm_node, rbuf);
|
|
if (fin_set && !ret)
|
|
i40iw_handle_fin_pkt(cm_node);
|
|
break;
|
|
case I40IW_PKT_TYPE_RST:
|
|
i40iw_handle_rst_pkt(cm_node, rbuf);
|
|
break;
|
|
default:
|
|
if (fin_set &&
|
|
(!i40iw_check_seq(cm_node, (struct tcphdr *)rbuf->tcph)))
|
|
i40iw_handle_fin_pkt(cm_node);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_make_listen_node - create a listen node with params
|
|
* @cm_core: cm's core
|
|
* @iwdev: iwarp device structure
|
|
* @cm_info: quad info for connection
|
|
*/
|
|
static struct i40iw_cm_listener *i40iw_make_listen_node(
|
|
struct i40iw_cm_core *cm_core,
|
|
struct i40iw_device *iwdev,
|
|
struct i40iw_cm_info *cm_info)
|
|
{
|
|
struct i40iw_cm_listener *listener;
|
|
unsigned long flags;
|
|
|
|
/* cannot have multiple matching listeners */
|
|
listener = i40iw_find_listener(cm_core, cm_info->loc_addr,
|
|
cm_info->loc_port,
|
|
cm_info->vlan_id,
|
|
I40IW_CM_LISTENER_EITHER_STATE);
|
|
if (listener &&
|
|
(listener->listener_state == I40IW_CM_LISTENER_ACTIVE_STATE)) {
|
|
atomic_dec(&listener->ref_count);
|
|
i40iw_debug(cm_core->dev,
|
|
I40IW_DEBUG_CM,
|
|
"Not creating listener since it already exists\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!listener) {
|
|
/* create a CM listen node (1/2 node to compare incoming traffic to) */
|
|
listener = kzalloc(sizeof(*listener), GFP_ATOMIC);
|
|
if (!listener)
|
|
return NULL;
|
|
cm_core->stats_listen_nodes_created++;
|
|
memcpy(listener->loc_addr, cm_info->loc_addr, sizeof(listener->loc_addr));
|
|
listener->loc_port = cm_info->loc_port;
|
|
|
|
INIT_LIST_HEAD(&listener->child_listen_list);
|
|
|
|
atomic_set(&listener->ref_count, 1);
|
|
} else {
|
|
listener->reused_node = 1;
|
|
}
|
|
|
|
listener->cm_id = cm_info->cm_id;
|
|
listener->ipv4 = cm_info->ipv4;
|
|
listener->vlan_id = cm_info->vlan_id;
|
|
atomic_set(&listener->pend_accepts_cnt, 0);
|
|
listener->cm_core = cm_core;
|
|
listener->iwdev = iwdev;
|
|
|
|
listener->backlog = cm_info->backlog;
|
|
listener->listener_state = I40IW_CM_LISTENER_ACTIVE_STATE;
|
|
|
|
if (!listener->reused_node) {
|
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
|
|
list_add(&listener->list, &cm_core->listen_nodes);
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
}
|
|
|
|
return listener;
|
|
}
|
|
|
|
/**
|
|
* i40iw_create_cm_node - make a connection node with params
|
|
* @cm_core: cm's core
|
|
* @iwdev: iwarp device structure
|
|
* @private_data_len: len to provate data for mpa request
|
|
* @private_data: pointer to private data for connection
|
|
* @cm_info: quad info for connection
|
|
*/
|
|
static struct i40iw_cm_node *i40iw_create_cm_node(
|
|
struct i40iw_cm_core *cm_core,
|
|
struct i40iw_device *iwdev,
|
|
u16 private_data_len,
|
|
void *private_data,
|
|
struct i40iw_cm_info *cm_info)
|
|
{
|
|
struct i40iw_cm_node *cm_node;
|
|
struct i40iw_cm_listener *loopback_remotelistener;
|
|
struct i40iw_cm_node *loopback_remotenode;
|
|
struct i40iw_cm_info loopback_cm_info;
|
|
|
|
/* create a CM connection node */
|
|
cm_node = i40iw_make_cm_node(cm_core, iwdev, cm_info, NULL);
|
|
if (!cm_node)
|
|
return NULL;
|
|
/* set our node side to client (active) side */
|
|
cm_node->tcp_cntxt.client = 1;
|
|
cm_node->tcp_cntxt.rcv_wscale = I40IW_CM_DEFAULT_RCV_WND_SCALE;
|
|
|
|
if (!memcmp(cm_info->loc_addr, cm_info->rem_addr, sizeof(cm_info->loc_addr))) {
|
|
loopback_remotelistener = i40iw_find_listener(
|
|
cm_core,
|
|
cm_info->rem_addr,
|
|
cm_node->rem_port,
|
|
cm_node->vlan_id,
|
|
I40IW_CM_LISTENER_ACTIVE_STATE);
|
|
if (!loopback_remotelistener) {
|
|
i40iw_create_event(cm_node, I40IW_CM_EVENT_ABORTED);
|
|
} else {
|
|
loopback_cm_info = *cm_info;
|
|
loopback_cm_info.loc_port = cm_info->rem_port;
|
|
loopback_cm_info.rem_port = cm_info->loc_port;
|
|
loopback_cm_info.cm_id = loopback_remotelistener->cm_id;
|
|
loopback_cm_info.ipv4 = cm_info->ipv4;
|
|
loopback_remotenode = i40iw_make_cm_node(cm_core,
|
|
iwdev,
|
|
&loopback_cm_info,
|
|
loopback_remotelistener);
|
|
if (!loopback_remotenode) {
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
return NULL;
|
|
}
|
|
cm_core->stats_loopbacks++;
|
|
loopback_remotenode->loopbackpartner = cm_node;
|
|
loopback_remotenode->tcp_cntxt.rcv_wscale =
|
|
I40IW_CM_DEFAULT_RCV_WND_SCALE;
|
|
cm_node->loopbackpartner = loopback_remotenode;
|
|
memcpy(loopback_remotenode->pdata_buf, private_data,
|
|
private_data_len);
|
|
loopback_remotenode->pdata.size = private_data_len;
|
|
|
|
cm_node->state = I40IW_CM_STATE_OFFLOADED;
|
|
cm_node->tcp_cntxt.rcv_nxt =
|
|
loopback_remotenode->tcp_cntxt.loc_seq_num;
|
|
loopback_remotenode->tcp_cntxt.rcv_nxt =
|
|
cm_node->tcp_cntxt.loc_seq_num;
|
|
cm_node->tcp_cntxt.max_snd_wnd =
|
|
loopback_remotenode->tcp_cntxt.rcv_wnd;
|
|
loopback_remotenode->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.rcv_wnd;
|
|
cm_node->tcp_cntxt.snd_wnd = loopback_remotenode->tcp_cntxt.rcv_wnd;
|
|
loopback_remotenode->tcp_cntxt.snd_wnd = cm_node->tcp_cntxt.rcv_wnd;
|
|
cm_node->tcp_cntxt.snd_wscale = loopback_remotenode->tcp_cntxt.rcv_wscale;
|
|
loopback_remotenode->tcp_cntxt.snd_wscale = cm_node->tcp_cntxt.rcv_wscale;
|
|
loopback_remotenode->state = I40IW_CM_STATE_MPAREQ_RCVD;
|
|
i40iw_create_event(loopback_remotenode, I40IW_CM_EVENT_MPA_REQ);
|
|
}
|
|
return cm_node;
|
|
}
|
|
|
|
cm_node->pdata.size = private_data_len;
|
|
cm_node->pdata.addr = cm_node->pdata_buf;
|
|
|
|
memcpy(cm_node->pdata_buf, private_data, private_data_len);
|
|
|
|
cm_node->state = I40IW_CM_STATE_SYN_SENT;
|
|
return cm_node;
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_reject - reject and teardown a connection
|
|
* @cm_node: connection's node
|
|
* @pdate: ptr to private data for reject
|
|
* @plen: size of private data
|
|
*/
|
|
static int i40iw_cm_reject(struct i40iw_cm_node *cm_node, const void *pdata, u8 plen)
|
|
{
|
|
int ret = 0;
|
|
int err;
|
|
int passive_state;
|
|
struct iw_cm_id *cm_id = cm_node->cm_id;
|
|
struct i40iw_cm_node *loopback = cm_node->loopbackpartner;
|
|
|
|
if (cm_node->tcp_cntxt.client)
|
|
return ret;
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
|
|
if (!loopback) {
|
|
passive_state = atomic_add_return(1, &cm_node->passive_state);
|
|
if (passive_state == I40IW_SEND_RESET_EVENT) {
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
} else {
|
|
if (cm_node->state == I40IW_CM_STATE_LISTENER_DESTROYED) {
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
} else {
|
|
ret = i40iw_send_mpa_reject(cm_node, pdata, plen);
|
|
if (ret) {
|
|
cm_node->state = I40IW_CM_STATE_CLOSED;
|
|
err = i40iw_send_reset(cm_node);
|
|
if (err)
|
|
i40iw_pr_err("send reset failed\n");
|
|
} else {
|
|
cm_id->add_ref(cm_id);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
cm_node->cm_id = NULL;
|
|
if (cm_node->state == I40IW_CM_STATE_LISTENER_DESTROYED) {
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
i40iw_rem_ref_cm_node(loopback);
|
|
} else {
|
|
ret = i40iw_send_cm_event(loopback,
|
|
loopback->cm_id,
|
|
IW_CM_EVENT_CONNECT_REPLY,
|
|
-ECONNREFUSED);
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
loopback->state = I40IW_CM_STATE_CLOSING;
|
|
|
|
cm_id = loopback->cm_id;
|
|
i40iw_rem_ref_cm_node(loopback);
|
|
cm_id->rem_ref(cm_id);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_close - close of cm connection
|
|
* @cm_node: connection's node
|
|
*/
|
|
static int i40iw_cm_close(struct i40iw_cm_node *cm_node)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (!cm_node)
|
|
return -EINVAL;
|
|
|
|
switch (cm_node->state) {
|
|
case I40IW_CM_STATE_SYN_RCVD:
|
|
case I40IW_CM_STATE_SYN_SENT:
|
|
case I40IW_CM_STATE_ONE_SIDE_ESTABLISHED:
|
|
case I40IW_CM_STATE_ESTABLISHED:
|
|
case I40IW_CM_STATE_ACCEPTING:
|
|
case I40IW_CM_STATE_MPAREQ_SENT:
|
|
case I40IW_CM_STATE_MPAREQ_RCVD:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_CLOSE_WAIT:
|
|
cm_node->state = I40IW_CM_STATE_LAST_ACK;
|
|
i40iw_send_fin(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_FIN_WAIT1:
|
|
case I40IW_CM_STATE_FIN_WAIT2:
|
|
case I40IW_CM_STATE_LAST_ACK:
|
|
case I40IW_CM_STATE_TIME_WAIT:
|
|
case I40IW_CM_STATE_CLOSING:
|
|
ret = -1;
|
|
break;
|
|
case I40IW_CM_STATE_LISTENING:
|
|
i40iw_cleanup_retrans_entry(cm_node);
|
|
i40iw_send_reset(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_MPAREJ_RCVD:
|
|
case I40IW_CM_STATE_UNKNOWN:
|
|
case I40IW_CM_STATE_INITED:
|
|
case I40IW_CM_STATE_CLOSED:
|
|
case I40IW_CM_STATE_LISTENER_DESTROYED:
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
break;
|
|
case I40IW_CM_STATE_OFFLOADED:
|
|
if (cm_node->send_entry)
|
|
i40iw_pr_err("send_entry\n");
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i40iw_receive_ilq - recv an ETHERNET packet, and process it
|
|
* through CM
|
|
* @dev: FPK dev struct
|
|
* @rbuf: receive buffer
|
|
*/
|
|
void i40iw_receive_ilq(struct i40iw_sc_dev *dev, struct i40iw_puda_buf *rbuf)
|
|
{
|
|
struct i40iw_cm_node *cm_node;
|
|
struct i40iw_cm_listener *listener;
|
|
struct iphdr *iph;
|
|
struct ipv6hdr *ip6h;
|
|
struct tcphdr *tcph;
|
|
struct i40iw_cm_info cm_info;
|
|
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
|
|
struct i40iw_cm_core *cm_core = &iwdev->cm_core;
|
|
struct vlan_ethhdr *ethh;
|
|
u16 vtag;
|
|
|
|
/* if vlan, then maclen = 18 else 14 */
|
|
iph = (struct iphdr *)rbuf->iph;
|
|
memset(&cm_info, 0, sizeof(cm_info));
|
|
|
|
i40iw_debug_buf(dev,
|
|
I40IW_DEBUG_ILQ,
|
|
"RECEIVE ILQ BUFFER",
|
|
rbuf->mem.va,
|
|
rbuf->totallen);
|
|
ethh = (struct vlan_ethhdr *)rbuf->mem.va;
|
|
|
|
if (ethh->h_vlan_proto == htons(ETH_P_8021Q)) {
|
|
vtag = ntohs(ethh->h_vlan_TCI);
|
|
cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
|
|
cm_info.vlan_id = vtag & VLAN_VID_MASK;
|
|
i40iw_debug(cm_core->dev,
|
|
I40IW_DEBUG_CM,
|
|
"%s vlan_id=%d\n",
|
|
__func__,
|
|
cm_info.vlan_id);
|
|
} else {
|
|
cm_info.vlan_id = I40IW_NO_VLAN;
|
|
}
|
|
tcph = (struct tcphdr *)rbuf->tcph;
|
|
|
|
if (rbuf->ipv4) {
|
|
cm_info.loc_addr[0] = ntohl(iph->daddr);
|
|
cm_info.rem_addr[0] = ntohl(iph->saddr);
|
|
cm_info.ipv4 = true;
|
|
} else {
|
|
ip6h = (struct ipv6hdr *)rbuf->iph;
|
|
i40iw_copy_ip_ntohl(cm_info.loc_addr,
|
|
ip6h->daddr.in6_u.u6_addr32);
|
|
i40iw_copy_ip_ntohl(cm_info.rem_addr,
|
|
ip6h->saddr.in6_u.u6_addr32);
|
|
cm_info.ipv4 = false;
|
|
}
|
|
cm_info.loc_port = ntohs(tcph->dest);
|
|
cm_info.rem_port = ntohs(tcph->source);
|
|
cm_node = i40iw_find_node(cm_core,
|
|
cm_info.rem_port,
|
|
cm_info.rem_addr,
|
|
cm_info.loc_port,
|
|
cm_info.loc_addr,
|
|
true);
|
|
|
|
if (!cm_node) {
|
|
/* Only type of packet accepted are for */
|
|
/* the PASSIVE open (syn only) */
|
|
if (!tcph->syn || tcph->ack)
|
|
return;
|
|
listener =
|
|
i40iw_find_listener(cm_core,
|
|
cm_info.loc_addr,
|
|
cm_info.loc_port,
|
|
cm_info.vlan_id,
|
|
I40IW_CM_LISTENER_ACTIVE_STATE);
|
|
if (!listener) {
|
|
cm_info.cm_id = NULL;
|
|
i40iw_debug(cm_core->dev,
|
|
I40IW_DEBUG_CM,
|
|
"%s no listener found\n",
|
|
__func__);
|
|
return;
|
|
}
|
|
cm_info.cm_id = listener->cm_id;
|
|
cm_node = i40iw_make_cm_node(cm_core, iwdev, &cm_info, listener);
|
|
if (!cm_node) {
|
|
i40iw_debug(cm_core->dev,
|
|
I40IW_DEBUG_CM,
|
|
"%s allocate node failed\n",
|
|
__func__);
|
|
atomic_dec(&listener->ref_count);
|
|
return;
|
|
}
|
|
if (!tcph->rst && !tcph->fin) {
|
|
cm_node->state = I40IW_CM_STATE_LISTENING;
|
|
} else {
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
return;
|
|
}
|
|
atomic_inc(&cm_node->ref_count);
|
|
} else if (cm_node->state == I40IW_CM_STATE_OFFLOADED) {
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
return;
|
|
}
|
|
i40iw_process_packet(cm_node, rbuf);
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
}
|
|
|
|
/**
|
|
* i40iw_setup_cm_core - allocate a top level instance of a cm
|
|
* core
|
|
* @iwdev: iwarp device structure
|
|
*/
|
|
void i40iw_setup_cm_core(struct i40iw_device *iwdev)
|
|
{
|
|
struct i40iw_cm_core *cm_core = &iwdev->cm_core;
|
|
|
|
cm_core->iwdev = iwdev;
|
|
cm_core->dev = &iwdev->sc_dev;
|
|
|
|
INIT_LIST_HEAD(&cm_core->connected_nodes);
|
|
INIT_LIST_HEAD(&cm_core->listen_nodes);
|
|
|
|
init_timer(&cm_core->tcp_timer);
|
|
cm_core->tcp_timer.function = i40iw_cm_timer_tick;
|
|
cm_core->tcp_timer.data = (unsigned long)cm_core;
|
|
|
|
spin_lock_init(&cm_core->ht_lock);
|
|
spin_lock_init(&cm_core->listen_list_lock);
|
|
|
|
cm_core->event_wq = alloc_ordered_workqueue("iwewq",
|
|
WQ_MEM_RECLAIM);
|
|
|
|
cm_core->disconn_wq = alloc_ordered_workqueue("iwdwq",
|
|
WQ_MEM_RECLAIM);
|
|
}
|
|
|
|
/**
|
|
* i40iw_cleanup_cm_core - deallocate a top level instance of a
|
|
* cm core
|
|
* @cm_core: cm's core
|
|
*/
|
|
void i40iw_cleanup_cm_core(struct i40iw_cm_core *cm_core)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (!cm_core)
|
|
return;
|
|
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
if (timer_pending(&cm_core->tcp_timer))
|
|
del_timer_sync(&cm_core->tcp_timer);
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
|
|
destroy_workqueue(cm_core->event_wq);
|
|
destroy_workqueue(cm_core->disconn_wq);
|
|
}
|
|
|
|
/**
|
|
* i40iw_init_tcp_ctx - setup qp context
|
|
* @cm_node: connection's node
|
|
* @tcp_info: offload info for tcp
|
|
* @iwqp: associate qp for the connection
|
|
*/
|
|
static void i40iw_init_tcp_ctx(struct i40iw_cm_node *cm_node,
|
|
struct i40iw_tcp_offload_info *tcp_info,
|
|
struct i40iw_qp *iwqp)
|
|
{
|
|
tcp_info->ipv4 = cm_node->ipv4;
|
|
tcp_info->drop_ooo_seg = true;
|
|
tcp_info->wscale = true;
|
|
tcp_info->ignore_tcp_opt = true;
|
|
tcp_info->ignore_tcp_uns_opt = true;
|
|
tcp_info->no_nagle = false;
|
|
|
|
tcp_info->ttl = I40IW_DEFAULT_TTL;
|
|
tcp_info->rtt_var = cpu_to_le32(I40IW_DEFAULT_RTT_VAR);
|
|
tcp_info->ss_thresh = cpu_to_le32(I40IW_DEFAULT_SS_THRESH);
|
|
tcp_info->rexmit_thresh = I40IW_DEFAULT_REXMIT_THRESH;
|
|
|
|
tcp_info->tcp_state = I40IW_TCP_STATE_ESTABLISHED;
|
|
tcp_info->snd_wscale = cm_node->tcp_cntxt.snd_wscale;
|
|
tcp_info->rcv_wscale = cm_node->tcp_cntxt.rcv_wscale;
|
|
|
|
tcp_info->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
|
|
tcp_info->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd);
|
|
tcp_info->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt);
|
|
tcp_info->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
|
|
|
|
tcp_info->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
|
|
tcp_info->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss);
|
|
tcp_info->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt);
|
|
tcp_info->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
|
|
tcp_info->max_snd_window = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd);
|
|
tcp_info->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd <<
|
|
cm_node->tcp_cntxt.rcv_wscale);
|
|
|
|
tcp_info->flow_label = 0;
|
|
tcp_info->snd_mss = cpu_to_le32(((u32)cm_node->tcp_cntxt.mss));
|
|
if (cm_node->vlan_id < VLAN_TAG_PRESENT) {
|
|
tcp_info->insert_vlan_tag = true;
|
|
tcp_info->vlan_tag = cpu_to_le16(cm_node->vlan_id);
|
|
}
|
|
if (cm_node->ipv4) {
|
|
tcp_info->src_port = cpu_to_le16(cm_node->loc_port);
|
|
tcp_info->dst_port = cpu_to_le16(cm_node->rem_port);
|
|
|
|
tcp_info->dest_ip_addr3 = cpu_to_le32(cm_node->rem_addr[0]);
|
|
tcp_info->local_ipaddr3 = cpu_to_le32(cm_node->loc_addr[0]);
|
|
tcp_info->arp_idx =
|
|
cpu_to_le16((u16)i40iw_arp_table(
|
|
iwqp->iwdev,
|
|
&tcp_info->dest_ip_addr3,
|
|
true,
|
|
NULL,
|
|
I40IW_ARP_RESOLVE));
|
|
} else {
|
|
tcp_info->src_port = cpu_to_le16(cm_node->loc_port);
|
|
tcp_info->dst_port = cpu_to_le16(cm_node->rem_port);
|
|
tcp_info->dest_ip_addr0 = cpu_to_le32(cm_node->rem_addr[0]);
|
|
tcp_info->dest_ip_addr1 = cpu_to_le32(cm_node->rem_addr[1]);
|
|
tcp_info->dest_ip_addr2 = cpu_to_le32(cm_node->rem_addr[2]);
|
|
tcp_info->dest_ip_addr3 = cpu_to_le32(cm_node->rem_addr[3]);
|
|
tcp_info->local_ipaddr0 = cpu_to_le32(cm_node->loc_addr[0]);
|
|
tcp_info->local_ipaddr1 = cpu_to_le32(cm_node->loc_addr[1]);
|
|
tcp_info->local_ipaddr2 = cpu_to_le32(cm_node->loc_addr[2]);
|
|
tcp_info->local_ipaddr3 = cpu_to_le32(cm_node->loc_addr[3]);
|
|
tcp_info->arp_idx =
|
|
cpu_to_le16((u16)i40iw_arp_table(
|
|
iwqp->iwdev,
|
|
&tcp_info->dest_ip_addr0,
|
|
false,
|
|
NULL,
|
|
I40IW_ARP_RESOLVE));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_init_tsa_conn - setup qp for RTS
|
|
* @iwqp: associate qp for the connection
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void i40iw_cm_init_tsa_conn(struct i40iw_qp *iwqp,
|
|
struct i40iw_cm_node *cm_node)
|
|
{
|
|
struct i40iw_tcp_offload_info tcp_info;
|
|
struct i40iwarp_offload_info *iwarp_info;
|
|
struct i40iw_qp_host_ctx_info *ctx_info;
|
|
struct i40iw_device *iwdev = iwqp->iwdev;
|
|
struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev;
|
|
|
|
memset(&tcp_info, 0x00, sizeof(struct i40iw_tcp_offload_info));
|
|
iwarp_info = &iwqp->iwarp_info;
|
|
ctx_info = &iwqp->ctx_info;
|
|
|
|
ctx_info->tcp_info = &tcp_info;
|
|
ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
|
|
ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
|
|
|
|
iwarp_info->ord_size = cm_node->ord_size;
|
|
iwarp_info->ird_size = i40iw_derive_hw_ird_setting(cm_node->ird_size);
|
|
|
|
if (iwarp_info->ord_size == 1)
|
|
iwarp_info->ord_size = 2;
|
|
|
|
iwarp_info->rd_enable = true;
|
|
iwarp_info->rdmap_ver = 1;
|
|
iwarp_info->ddp_ver = 1;
|
|
|
|
iwarp_info->pd_id = iwqp->iwpd->sc_pd.pd_id;
|
|
|
|
ctx_info->tcp_info_valid = true;
|
|
ctx_info->iwarp_info_valid = true;
|
|
ctx_info->add_to_qoslist = true;
|
|
ctx_info->user_pri = cm_node->user_pri;
|
|
|
|
i40iw_init_tcp_ctx(cm_node, &tcp_info, iwqp);
|
|
if (cm_node->snd_mark_en) {
|
|
iwarp_info->snd_mark_en = true;
|
|
iwarp_info->snd_mark_offset = (tcp_info.snd_nxt &
|
|
SNDMARKER_SEQNMASK) + cm_node->lsmm_size;
|
|
}
|
|
|
|
cm_node->state = I40IW_CM_STATE_OFFLOADED;
|
|
tcp_info.tcp_state = I40IW_TCP_STATE_ESTABLISHED;
|
|
tcp_info.src_mac_addr_idx = iwdev->mac_ip_table_idx;
|
|
|
|
dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp, (u64 *)(iwqp->host_ctx.va), ctx_info);
|
|
|
|
/* once tcp_info is set, no need to do it again */
|
|
ctx_info->tcp_info_valid = false;
|
|
ctx_info->iwarp_info_valid = false;
|
|
ctx_info->add_to_qoslist = false;
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_disconn - when a connection is being closed
|
|
* @iwqp: associate qp for the connection
|
|
*/
|
|
int i40iw_cm_disconn(struct i40iw_qp *iwqp)
|
|
{
|
|
struct disconn_work *work;
|
|
struct i40iw_device *iwdev = iwqp->iwdev;
|
|
struct i40iw_cm_core *cm_core = &iwdev->cm_core;
|
|
|
|
work = kzalloc(sizeof(*work), GFP_ATOMIC);
|
|
if (!work)
|
|
return -ENOMEM; /* Timer will clean up */
|
|
|
|
i40iw_add_ref(&iwqp->ibqp);
|
|
work->iwqp = iwqp;
|
|
INIT_WORK(&work->work, i40iw_disconnect_worker);
|
|
queue_work(cm_core->disconn_wq, &work->work);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i40iw_qp_disconnect - free qp and close cm
|
|
* @iwqp: associate qp for the connection
|
|
*/
|
|
static void i40iw_qp_disconnect(struct i40iw_qp *iwqp)
|
|
{
|
|
struct i40iw_device *iwdev;
|
|
struct i40iw_ib_device *iwibdev;
|
|
|
|
iwdev = to_iwdev(iwqp->ibqp.device);
|
|
if (!iwdev) {
|
|
i40iw_pr_err("iwdev == NULL\n");
|
|
return;
|
|
}
|
|
|
|
iwibdev = iwdev->iwibdev;
|
|
|
|
if (iwqp->active_conn) {
|
|
/* indicate this connection is NOT active */
|
|
iwqp->active_conn = 0;
|
|
} else {
|
|
/* Need to free the Last Streaming Mode Message */
|
|
if (iwqp->ietf_mem.va) {
|
|
if (iwqp->lsmm_mr)
|
|
iwibdev->ibdev.dereg_mr(iwqp->lsmm_mr);
|
|
i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->ietf_mem);
|
|
}
|
|
}
|
|
|
|
/* close the CM node down if it is still active */
|
|
if (iwqp->cm_node) {
|
|
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM, "%s Call close API\n", __func__);
|
|
i40iw_cm_close(iwqp->cm_node);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_disconn_true - called by worker thread to disconnect qp
|
|
* @iwqp: associate qp for the connection
|
|
*/
|
|
static void i40iw_cm_disconn_true(struct i40iw_qp *iwqp)
|
|
{
|
|
struct iw_cm_id *cm_id;
|
|
struct i40iw_device *iwdev;
|
|
struct i40iw_sc_qp *qp = &iwqp->sc_qp;
|
|
u16 last_ae;
|
|
u8 original_hw_tcp_state;
|
|
u8 original_ibqp_state;
|
|
int disconn_status = 0;
|
|
int issue_disconn = 0;
|
|
int issue_close = 0;
|
|
int issue_flush = 0;
|
|
struct ib_event ibevent;
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
if (!iwqp) {
|
|
i40iw_pr_err("iwqp == NULL\n");
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&iwqp->lock, flags);
|
|
cm_id = iwqp->cm_id;
|
|
/* make sure we havent already closed this connection */
|
|
if (!cm_id) {
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
return;
|
|
}
|
|
|
|
iwdev = to_iwdev(iwqp->ibqp.device);
|
|
|
|
original_hw_tcp_state = iwqp->hw_tcp_state;
|
|
original_ibqp_state = iwqp->ibqp_state;
|
|
last_ae = iwqp->last_aeq;
|
|
|
|
if (qp->term_flags) {
|
|
issue_disconn = 1;
|
|
issue_close = 1;
|
|
iwqp->cm_id = NULL;
|
|
/*When term timer expires after cm_timer, don't want
|
|
*terminate-handler to issue cm_disconn which can re-free
|
|
*a QP even after its refcnt=0.
|
|
*/
|
|
del_timer(&iwqp->terminate_timer);
|
|
if (!iwqp->flush_issued) {
|
|
iwqp->flush_issued = 1;
|
|
issue_flush = 1;
|
|
}
|
|
} else if ((original_hw_tcp_state == I40IW_TCP_STATE_CLOSE_WAIT) ||
|
|
((original_ibqp_state == IB_QPS_RTS) &&
|
|
(last_ae == I40IW_AE_LLP_CONNECTION_RESET))) {
|
|
issue_disconn = 1;
|
|
if (last_ae == I40IW_AE_LLP_CONNECTION_RESET)
|
|
disconn_status = -ECONNRESET;
|
|
}
|
|
|
|
if (((original_hw_tcp_state == I40IW_TCP_STATE_CLOSED) ||
|
|
(original_hw_tcp_state == I40IW_TCP_STATE_TIME_WAIT) ||
|
|
(last_ae == I40IW_AE_RDMAP_ROE_BAD_LLP_CLOSE) ||
|
|
(last_ae == I40IW_AE_LLP_CONNECTION_RESET))) {
|
|
issue_close = 1;
|
|
iwqp->cm_id = NULL;
|
|
if (!iwqp->flush_issued) {
|
|
iwqp->flush_issued = 1;
|
|
issue_flush = 1;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
if (issue_flush && !iwqp->destroyed) {
|
|
/* Flush the queues */
|
|
i40iw_flush_wqes(iwdev, iwqp);
|
|
|
|
if (qp->term_flags && iwqp->ibqp.event_handler) {
|
|
ibevent.device = iwqp->ibqp.device;
|
|
ibevent.event = (qp->eventtype == TERM_EVENT_QP_FATAL) ?
|
|
IB_EVENT_QP_FATAL : IB_EVENT_QP_ACCESS_ERR;
|
|
ibevent.element.qp = &iwqp->ibqp;
|
|
iwqp->ibqp.event_handler(&ibevent, iwqp->ibqp.qp_context);
|
|
}
|
|
}
|
|
|
|
if (cm_id && cm_id->event_handler) {
|
|
if (issue_disconn) {
|
|
ret = i40iw_send_cm_event(NULL,
|
|
cm_id,
|
|
IW_CM_EVENT_DISCONNECT,
|
|
disconn_status);
|
|
|
|
if (ret)
|
|
i40iw_debug(&iwdev->sc_dev,
|
|
I40IW_DEBUG_CM,
|
|
"disconnect event failed %s: - cm_id = %p\n",
|
|
__func__, cm_id);
|
|
}
|
|
if (issue_close) {
|
|
i40iw_qp_disconnect(iwqp);
|
|
cm_id->provider_data = iwqp;
|
|
ret = i40iw_send_cm_event(NULL, cm_id, IW_CM_EVENT_CLOSE, 0);
|
|
if (ret)
|
|
i40iw_debug(&iwdev->sc_dev,
|
|
I40IW_DEBUG_CM,
|
|
"close event failed %s: - cm_id = %p\n",
|
|
__func__, cm_id);
|
|
cm_id->rem_ref(cm_id);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_disconnect_worker - worker for connection close
|
|
* @work: points or disconn structure
|
|
*/
|
|
static void i40iw_disconnect_worker(struct work_struct *work)
|
|
{
|
|
struct disconn_work *dwork = container_of(work, struct disconn_work, work);
|
|
struct i40iw_qp *iwqp = dwork->iwqp;
|
|
|
|
kfree(dwork);
|
|
i40iw_cm_disconn_true(iwqp);
|
|
i40iw_rem_ref(&iwqp->ibqp);
|
|
}
|
|
|
|
/**
|
|
* i40iw_accept - registered call for connection to be accepted
|
|
* @cm_id: cm information for passive connection
|
|
* @conn_param: accpet parameters
|
|
*/
|
|
int i40iw_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
|
|
{
|
|
struct ib_qp *ibqp;
|
|
struct i40iw_qp *iwqp;
|
|
struct i40iw_device *iwdev;
|
|
struct i40iw_sc_dev *dev;
|
|
struct i40iw_cm_node *cm_node;
|
|
struct ib_qp_attr attr;
|
|
int passive_state;
|
|
struct ib_mr *ibmr;
|
|
struct i40iw_pd *iwpd;
|
|
u16 buf_len = 0;
|
|
struct i40iw_kmem_info accept;
|
|
enum i40iw_status_code status;
|
|
u64 tagged_offset;
|
|
|
|
memset(&attr, 0, sizeof(attr));
|
|
ibqp = i40iw_get_qp(cm_id->device, conn_param->qpn);
|
|
if (!ibqp)
|
|
return -EINVAL;
|
|
|
|
iwqp = to_iwqp(ibqp);
|
|
iwdev = iwqp->iwdev;
|
|
dev = &iwdev->sc_dev;
|
|
cm_node = (struct i40iw_cm_node *)cm_id->provider_data;
|
|
|
|
if (((struct sockaddr_in *)&cm_id->local_addr)->sin_family == AF_INET) {
|
|
cm_node->ipv4 = true;
|
|
cm_node->vlan_id = i40iw_get_vlan_ipv4(cm_node->loc_addr);
|
|
} else {
|
|
cm_node->ipv4 = false;
|
|
i40iw_netdev_vlan_ipv6(cm_node->loc_addr, &cm_node->vlan_id, NULL);
|
|
}
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"Accept vlan_id=%d\n",
|
|
cm_node->vlan_id);
|
|
if (cm_node->state == I40IW_CM_STATE_LISTENER_DESTROYED) {
|
|
if (cm_node->loopbackpartner)
|
|
i40iw_rem_ref_cm_node(cm_node->loopbackpartner);
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
return -EINVAL;
|
|
}
|
|
|
|
passive_state = atomic_add_return(1, &cm_node->passive_state);
|
|
if (passive_state == I40IW_SEND_RESET_EVENT) {
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
return -ECONNRESET;
|
|
}
|
|
|
|
cm_node->cm_core->stats_accepts++;
|
|
iwqp->cm_node = (void *)cm_node;
|
|
cm_node->iwqp = iwqp;
|
|
|
|
buf_len = conn_param->private_data_len + I40IW_MAX_IETF_SIZE;
|
|
|
|
status = i40iw_allocate_dma_mem(dev->hw, &iwqp->ietf_mem, buf_len, 1);
|
|
|
|
if (status)
|
|
return -ENOMEM;
|
|
cm_node->pdata.size = conn_param->private_data_len;
|
|
accept.addr = iwqp->ietf_mem.va;
|
|
accept.size = i40iw_cm_build_mpa_frame(cm_node, &accept, MPA_KEY_REPLY);
|
|
memcpy(accept.addr + accept.size, conn_param->private_data,
|
|
conn_param->private_data_len);
|
|
|
|
/* setup our first outgoing iWarp send WQE (the IETF frame response) */
|
|
if ((cm_node->ipv4 &&
|
|
!i40iw_ipv4_is_loopback(cm_node->loc_addr[0], cm_node->rem_addr[0])) ||
|
|
(!cm_node->ipv4 &&
|
|
!i40iw_ipv6_is_loopback(cm_node->loc_addr, cm_node->rem_addr))) {
|
|
iwpd = iwqp->iwpd;
|
|
tagged_offset = (uintptr_t)iwqp->ietf_mem.va;
|
|
ibmr = i40iw_reg_phys_mr(&iwpd->ibpd,
|
|
iwqp->ietf_mem.pa,
|
|
buf_len,
|
|
IB_ACCESS_LOCAL_WRITE,
|
|
&tagged_offset);
|
|
if (IS_ERR(ibmr)) {
|
|
i40iw_free_dma_mem(dev->hw, &iwqp->ietf_mem);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ibmr->pd = &iwpd->ibpd;
|
|
ibmr->device = iwpd->ibpd.device;
|
|
iwqp->lsmm_mr = ibmr;
|
|
if (iwqp->page)
|
|
iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
|
|
dev->iw_priv_qp_ops->qp_send_lsmm(&iwqp->sc_qp,
|
|
iwqp->ietf_mem.va,
|
|
(accept.size + conn_param->private_data_len),
|
|
ibmr->lkey);
|
|
|
|
} else {
|
|
if (iwqp->page)
|
|
iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
|
|
dev->iw_priv_qp_ops->qp_send_lsmm(&iwqp->sc_qp, NULL, 0, 0);
|
|
}
|
|
|
|
if (iwqp->page)
|
|
kunmap(iwqp->page);
|
|
|
|
iwqp->cm_id = cm_id;
|
|
cm_node->cm_id = cm_id;
|
|
|
|
cm_id->provider_data = (void *)iwqp;
|
|
iwqp->active_conn = 0;
|
|
|
|
cm_node->lsmm_size = accept.size + conn_param->private_data_len;
|
|
i40iw_cm_init_tsa_conn(iwqp, cm_node);
|
|
cm_id->add_ref(cm_id);
|
|
i40iw_add_ref(&iwqp->ibqp);
|
|
|
|
i40iw_send_cm_event(cm_node, cm_id, IW_CM_EVENT_ESTABLISHED, 0);
|
|
|
|
attr.qp_state = IB_QPS_RTS;
|
|
cm_node->qhash_set = false;
|
|
i40iw_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
|
|
if (cm_node->loopbackpartner) {
|
|
cm_node->loopbackpartner->pdata.size = conn_param->private_data_len;
|
|
|
|
/* copy entire MPA frame to our cm_node's frame */
|
|
memcpy(cm_node->loopbackpartner->pdata_buf,
|
|
conn_param->private_data,
|
|
conn_param->private_data_len);
|
|
i40iw_create_event(cm_node->loopbackpartner, I40IW_CM_EVENT_CONNECTED);
|
|
}
|
|
|
|
cm_node->accelerated = 1;
|
|
if (cm_node->accept_pend) {
|
|
if (!cm_node->listener)
|
|
i40iw_pr_err("cm_node->listener NULL for passive node\n");
|
|
atomic_dec(&cm_node->listener->pend_accepts_cnt);
|
|
cm_node->accept_pend = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i40iw_reject - registered call for connection to be rejected
|
|
* @cm_id: cm information for passive connection
|
|
* @pdata: private data to be sent
|
|
* @pdata_len: private data length
|
|
*/
|
|
int i40iw_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
|
|
{
|
|
struct i40iw_device *iwdev;
|
|
struct i40iw_cm_node *cm_node;
|
|
struct i40iw_cm_node *loopback;
|
|
|
|
cm_node = (struct i40iw_cm_node *)cm_id->provider_data;
|
|
loopback = cm_node->loopbackpartner;
|
|
cm_node->cm_id = cm_id;
|
|
cm_node->pdata.size = pdata_len;
|
|
|
|
iwdev = to_iwdev(cm_id->device);
|
|
if (!iwdev)
|
|
return -EINVAL;
|
|
cm_node->cm_core->stats_rejects++;
|
|
|
|
if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER)
|
|
return -EINVAL;
|
|
|
|
if (loopback) {
|
|
memcpy(&loopback->pdata_buf, pdata, pdata_len);
|
|
loopback->pdata.size = pdata_len;
|
|
}
|
|
|
|
return i40iw_cm_reject(cm_node, pdata, pdata_len);
|
|
}
|
|
|
|
/**
|
|
* i40iw_connect - registered call for connection to be established
|
|
* @cm_id: cm information for passive connection
|
|
* @conn_param: Information about the connection
|
|
*/
|
|
int i40iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
|
|
{
|
|
struct ib_qp *ibqp;
|
|
struct i40iw_qp *iwqp;
|
|
struct i40iw_device *iwdev;
|
|
struct i40iw_cm_node *cm_node;
|
|
struct i40iw_cm_info cm_info;
|
|
struct sockaddr_in *laddr;
|
|
struct sockaddr_in *raddr;
|
|
struct sockaddr_in6 *laddr6;
|
|
struct sockaddr_in6 *raddr6;
|
|
bool qhash_set = false;
|
|
int apbvt_set = 0;
|
|
enum i40iw_status_code status;
|
|
|
|
ibqp = i40iw_get_qp(cm_id->device, conn_param->qpn);
|
|
if (!ibqp)
|
|
return -EINVAL;
|
|
iwqp = to_iwqp(ibqp);
|
|
if (!iwqp)
|
|
return -EINVAL;
|
|
iwdev = to_iwdev(iwqp->ibqp.device);
|
|
if (!iwdev)
|
|
return -EINVAL;
|
|
|
|
laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
|
|
raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
|
|
laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
|
|
raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
|
|
|
|
if (!(laddr->sin_port) || !(raddr->sin_port))
|
|
return -EINVAL;
|
|
|
|
iwqp->active_conn = 1;
|
|
iwqp->cm_id = NULL;
|
|
cm_id->provider_data = iwqp;
|
|
|
|
/* set up the connection params for the node */
|
|
if (cm_id->remote_addr.ss_family == AF_INET) {
|
|
cm_info.ipv4 = true;
|
|
memset(cm_info.loc_addr, 0, sizeof(cm_info.loc_addr));
|
|
memset(cm_info.rem_addr, 0, sizeof(cm_info.rem_addr));
|
|
cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
|
|
cm_info.rem_addr[0] = ntohl(raddr->sin_addr.s_addr);
|
|
cm_info.loc_port = ntohs(laddr->sin_port);
|
|
cm_info.rem_port = ntohs(raddr->sin_port);
|
|
cm_info.vlan_id = i40iw_get_vlan_ipv4(cm_info.loc_addr);
|
|
} else {
|
|
cm_info.ipv4 = false;
|
|
i40iw_copy_ip_ntohl(cm_info.loc_addr,
|
|
laddr6->sin6_addr.in6_u.u6_addr32);
|
|
i40iw_copy_ip_ntohl(cm_info.rem_addr,
|
|
raddr6->sin6_addr.in6_u.u6_addr32);
|
|
cm_info.loc_port = ntohs(laddr6->sin6_port);
|
|
cm_info.rem_port = ntohs(raddr6->sin6_port);
|
|
i40iw_netdev_vlan_ipv6(cm_info.loc_addr, &cm_info.vlan_id, NULL);
|
|
}
|
|
cm_info.cm_id = cm_id;
|
|
cm_info.user_pri = rt_tos2priority(cm_id->tos);
|
|
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_DCB, "%s TOS:[%d] UP:[%d]\n",
|
|
__func__, cm_id->tos, cm_info.user_pri);
|
|
if ((cm_info.ipv4 && (laddr->sin_addr.s_addr != raddr->sin_addr.s_addr)) ||
|
|
(!cm_info.ipv4 && memcmp(laddr6->sin6_addr.in6_u.u6_addr32,
|
|
raddr6->sin6_addr.in6_u.u6_addr32,
|
|
sizeof(laddr6->sin6_addr.in6_u.u6_addr32)))) {
|
|
status = i40iw_manage_qhash(iwdev,
|
|
&cm_info,
|
|
I40IW_QHASH_TYPE_TCP_ESTABLISHED,
|
|
I40IW_QHASH_MANAGE_TYPE_ADD,
|
|
NULL,
|
|
true);
|
|
if (status)
|
|
return -EINVAL;
|
|
qhash_set = true;
|
|
}
|
|
status = i40iw_manage_apbvt(iwdev, cm_info.loc_port, I40IW_MANAGE_APBVT_ADD);
|
|
if (status) {
|
|
i40iw_manage_qhash(iwdev,
|
|
&cm_info,
|
|
I40IW_QHASH_TYPE_TCP_ESTABLISHED,
|
|
I40IW_QHASH_MANAGE_TYPE_DELETE,
|
|
NULL,
|
|
false);
|
|
return -EINVAL;
|
|
}
|
|
|
|
apbvt_set = 1;
|
|
cm_id->add_ref(cm_id);
|
|
cm_node = i40iw_create_cm_node(&iwdev->cm_core, iwdev,
|
|
conn_param->private_data_len,
|
|
(void *)conn_param->private_data,
|
|
&cm_info);
|
|
if (!cm_node)
|
|
goto err;
|
|
|
|
i40iw_record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord);
|
|
if (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO &&
|
|
!cm_node->ord_size)
|
|
cm_node->ord_size = 1;
|
|
|
|
cm_node->apbvt_set = apbvt_set;
|
|
cm_node->qhash_set = qhash_set;
|
|
iwqp->cm_node = cm_node;
|
|
cm_node->iwqp = iwqp;
|
|
iwqp->cm_id = cm_id;
|
|
i40iw_add_ref(&iwqp->ibqp);
|
|
|
|
if (cm_node->state == I40IW_CM_STATE_SYN_SENT) {
|
|
if (i40iw_send_syn(cm_node, 0)) {
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"Api - connect(): port=0x%04x, cm_node=%p, cm_id = %p.\n",
|
|
cm_node->rem_port,
|
|
cm_node,
|
|
cm_node->cm_id);
|
|
return 0;
|
|
|
|
err:
|
|
if (cm_node) {
|
|
if (cm_node->ipv4)
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"Api - connect() FAILED: dest addr=%pI4",
|
|
cm_node->rem_addr);
|
|
else
|
|
i40iw_debug(cm_node->dev, I40IW_DEBUG_CM,
|
|
"Api - connect() FAILED: dest addr=%pI6",
|
|
cm_node->rem_addr);
|
|
}
|
|
i40iw_manage_qhash(iwdev,
|
|
&cm_info,
|
|
I40IW_QHASH_TYPE_TCP_ESTABLISHED,
|
|
I40IW_QHASH_MANAGE_TYPE_DELETE,
|
|
NULL,
|
|
false);
|
|
|
|
if (apbvt_set && !i40iw_listen_port_in_use(&iwdev->cm_core,
|
|
cm_info.loc_port))
|
|
i40iw_manage_apbvt(iwdev,
|
|
cm_info.loc_port,
|
|
I40IW_MANAGE_APBVT_DEL);
|
|
cm_id->rem_ref(cm_id);
|
|
iwdev->cm_core.stats_connect_errs++;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* i40iw_create_listen - registered call creating listener
|
|
* @cm_id: cm information for passive connection
|
|
* @backlog: to max accept pending count
|
|
*/
|
|
int i40iw_create_listen(struct iw_cm_id *cm_id, int backlog)
|
|
{
|
|
struct i40iw_device *iwdev;
|
|
struct i40iw_cm_listener *cm_listen_node;
|
|
struct i40iw_cm_info cm_info;
|
|
enum i40iw_status_code ret;
|
|
struct sockaddr_in *laddr;
|
|
struct sockaddr_in6 *laddr6;
|
|
bool wildcard = false;
|
|
|
|
iwdev = to_iwdev(cm_id->device);
|
|
if (!iwdev)
|
|
return -EINVAL;
|
|
|
|
laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
|
|
laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
|
|
memset(&cm_info, 0, sizeof(cm_info));
|
|
if (laddr->sin_family == AF_INET) {
|
|
cm_info.ipv4 = true;
|
|
cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
|
|
cm_info.loc_port = ntohs(laddr->sin_port);
|
|
|
|
if (laddr->sin_addr.s_addr != INADDR_ANY)
|
|
cm_info.vlan_id = i40iw_get_vlan_ipv4(cm_info.loc_addr);
|
|
else
|
|
wildcard = true;
|
|
|
|
} else {
|
|
cm_info.ipv4 = false;
|
|
i40iw_copy_ip_ntohl(cm_info.loc_addr,
|
|
laddr6->sin6_addr.in6_u.u6_addr32);
|
|
cm_info.loc_port = ntohs(laddr6->sin6_port);
|
|
if (ipv6_addr_type(&laddr6->sin6_addr) != IPV6_ADDR_ANY)
|
|
i40iw_netdev_vlan_ipv6(cm_info.loc_addr,
|
|
&cm_info.vlan_id,
|
|
NULL);
|
|
else
|
|
wildcard = true;
|
|
}
|
|
cm_info.backlog = backlog;
|
|
cm_info.cm_id = cm_id;
|
|
|
|
cm_listen_node = i40iw_make_listen_node(&iwdev->cm_core, iwdev, &cm_info);
|
|
if (!cm_listen_node) {
|
|
i40iw_pr_err("cm_listen_node == NULL\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
cm_id->provider_data = cm_listen_node;
|
|
|
|
cm_listen_node->user_pri = rt_tos2priority(cm_id->tos);
|
|
cm_info.user_pri = cm_listen_node->user_pri;
|
|
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_DCB, "%s TOS:[%d] UP:[%d]\n",
|
|
__func__, cm_id->tos, cm_listen_node->user_pri);
|
|
|
|
if (!cm_listen_node->reused_node) {
|
|
if (wildcard) {
|
|
if (cm_info.ipv4)
|
|
ret = i40iw_add_mqh_4(iwdev,
|
|
&cm_info,
|
|
cm_listen_node);
|
|
else
|
|
ret = i40iw_add_mqh_6(iwdev,
|
|
&cm_info,
|
|
cm_listen_node);
|
|
if (ret)
|
|
goto error;
|
|
|
|
ret = i40iw_manage_apbvt(iwdev,
|
|
cm_info.loc_port,
|
|
I40IW_MANAGE_APBVT_ADD);
|
|
|
|
if (ret)
|
|
goto error;
|
|
} else {
|
|
ret = i40iw_manage_qhash(iwdev,
|
|
&cm_info,
|
|
I40IW_QHASH_TYPE_TCP_SYN,
|
|
I40IW_QHASH_MANAGE_TYPE_ADD,
|
|
NULL,
|
|
true);
|
|
if (ret)
|
|
goto error;
|
|
cm_listen_node->qhash_set = true;
|
|
ret = i40iw_manage_apbvt(iwdev,
|
|
cm_info.loc_port,
|
|
I40IW_MANAGE_APBVT_ADD);
|
|
if (ret)
|
|
goto error;
|
|
}
|
|
}
|
|
cm_id->add_ref(cm_id);
|
|
cm_listen_node->cm_core->stats_listen_created++;
|
|
return 0;
|
|
error:
|
|
i40iw_cm_del_listen(&iwdev->cm_core, (void *)cm_listen_node, false);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* i40iw_destroy_listen - registered call to destroy listener
|
|
* @cm_id: cm information for passive connection
|
|
*/
|
|
int i40iw_destroy_listen(struct iw_cm_id *cm_id)
|
|
{
|
|
struct i40iw_device *iwdev;
|
|
|
|
iwdev = to_iwdev(cm_id->device);
|
|
if (cm_id->provider_data)
|
|
i40iw_cm_del_listen(&iwdev->cm_core, cm_id->provider_data, true);
|
|
else
|
|
i40iw_pr_err("cm_id->provider_data was NULL\n");
|
|
|
|
cm_id->rem_ref(cm_id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_event_connected - handle connected active node
|
|
* @event: the info for cm_node of connection
|
|
*/
|
|
static void i40iw_cm_event_connected(struct i40iw_cm_event *event)
|
|
{
|
|
struct i40iw_qp *iwqp;
|
|
struct i40iw_device *iwdev;
|
|
struct i40iw_cm_node *cm_node;
|
|
struct i40iw_sc_dev *dev;
|
|
struct ib_qp_attr attr;
|
|
struct iw_cm_id *cm_id;
|
|
int status;
|
|
bool read0;
|
|
|
|
cm_node = event->cm_node;
|
|
cm_id = cm_node->cm_id;
|
|
iwqp = (struct i40iw_qp *)cm_id->provider_data;
|
|
iwdev = to_iwdev(iwqp->ibqp.device);
|
|
dev = &iwdev->sc_dev;
|
|
|
|
if (iwqp->destroyed) {
|
|
status = -ETIMEDOUT;
|
|
goto error;
|
|
}
|
|
i40iw_cm_init_tsa_conn(iwqp, cm_node);
|
|
read0 = (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO);
|
|
if (iwqp->page)
|
|
iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
|
|
dev->iw_priv_qp_ops->qp_send_rtt(&iwqp->sc_qp, read0);
|
|
if (iwqp->page)
|
|
kunmap(iwqp->page);
|
|
status = i40iw_send_cm_event(cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY, 0);
|
|
if (status)
|
|
i40iw_pr_err("send cm event\n");
|
|
|
|
memset(&attr, 0, sizeof(attr));
|
|
attr.qp_state = IB_QPS_RTS;
|
|
cm_node->qhash_set = false;
|
|
i40iw_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
|
|
|
|
cm_node->accelerated = 1;
|
|
if (cm_node->accept_pend) {
|
|
if (!cm_node->listener)
|
|
i40iw_pr_err("listener is null for passive node\n");
|
|
atomic_dec(&cm_node->listener->pend_accepts_cnt);
|
|
cm_node->accept_pend = 0;
|
|
}
|
|
return;
|
|
|
|
error:
|
|
iwqp->cm_id = NULL;
|
|
cm_id->provider_data = NULL;
|
|
i40iw_send_cm_event(event->cm_node,
|
|
cm_id,
|
|
IW_CM_EVENT_CONNECT_REPLY,
|
|
status);
|
|
cm_id->rem_ref(cm_id);
|
|
i40iw_rem_ref_cm_node(event->cm_node);
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_event_reset - handle reset
|
|
* @event: the info for cm_node of connection
|
|
*/
|
|
static void i40iw_cm_event_reset(struct i40iw_cm_event *event)
|
|
{
|
|
struct i40iw_cm_node *cm_node = event->cm_node;
|
|
struct iw_cm_id *cm_id = cm_node->cm_id;
|
|
struct i40iw_qp *iwqp;
|
|
|
|
if (!cm_id)
|
|
return;
|
|
|
|
iwqp = cm_id->provider_data;
|
|
if (!iwqp)
|
|
return;
|
|
|
|
i40iw_debug(cm_node->dev,
|
|
I40IW_DEBUG_CM,
|
|
"reset event %p - cm_id = %p\n",
|
|
event->cm_node, cm_id);
|
|
iwqp->cm_id = NULL;
|
|
|
|
i40iw_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_DISCONNECT, -ECONNRESET);
|
|
i40iw_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_CLOSE, 0);
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_event_handler - worker thread callback to send event to cm upper layer
|
|
* @work: pointer of cm event info.
|
|
*/
|
|
static void i40iw_cm_event_handler(struct work_struct *work)
|
|
{
|
|
struct i40iw_cm_event *event = container_of(work,
|
|
struct i40iw_cm_event,
|
|
event_work);
|
|
struct i40iw_cm_node *cm_node;
|
|
|
|
if (!event || !event->cm_node || !event->cm_node->cm_core)
|
|
return;
|
|
|
|
cm_node = event->cm_node;
|
|
|
|
switch (event->type) {
|
|
case I40IW_CM_EVENT_MPA_REQ:
|
|
i40iw_send_cm_event(cm_node,
|
|
cm_node->cm_id,
|
|
IW_CM_EVENT_CONNECT_REQUEST,
|
|
0);
|
|
break;
|
|
case I40IW_CM_EVENT_RESET:
|
|
i40iw_cm_event_reset(event);
|
|
break;
|
|
case I40IW_CM_EVENT_CONNECTED:
|
|
if (!event->cm_node->cm_id ||
|
|
(event->cm_node->state != I40IW_CM_STATE_OFFLOADED))
|
|
break;
|
|
i40iw_cm_event_connected(event);
|
|
break;
|
|
case I40IW_CM_EVENT_MPA_REJECT:
|
|
if (!event->cm_node->cm_id ||
|
|
(cm_node->state == I40IW_CM_STATE_OFFLOADED))
|
|
break;
|
|
i40iw_send_cm_event(cm_node,
|
|
cm_node->cm_id,
|
|
IW_CM_EVENT_CONNECT_REPLY,
|
|
-ECONNREFUSED);
|
|
break;
|
|
case I40IW_CM_EVENT_ABORTED:
|
|
if (!event->cm_node->cm_id ||
|
|
(event->cm_node->state == I40IW_CM_STATE_OFFLOADED))
|
|
break;
|
|
i40iw_event_connect_error(event);
|
|
break;
|
|
default:
|
|
i40iw_pr_err("event type = %d\n", event->type);
|
|
break;
|
|
}
|
|
|
|
event->cm_info.cm_id->rem_ref(event->cm_info.cm_id);
|
|
i40iw_rem_ref_cm_node(event->cm_node);
|
|
kfree(event);
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_post_event - queue event request for worker thread
|
|
* @event: cm node's info for up event call
|
|
*/
|
|
static void i40iw_cm_post_event(struct i40iw_cm_event *event)
|
|
{
|
|
atomic_inc(&event->cm_node->ref_count);
|
|
event->cm_info.cm_id->add_ref(event->cm_info.cm_id);
|
|
INIT_WORK(&event->event_work, i40iw_cm_event_handler);
|
|
|
|
queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
|
|
}
|
|
|
|
/**
|
|
* i40iw_qhash_ctrl - enable/disable qhash for list
|
|
* @iwdev: device pointer
|
|
* @parent_listen_node: parent listen node
|
|
* @nfo: cm info node
|
|
* @ipaddr: Pointer to IPv4 or IPv6 address
|
|
* @ipv4: flag indicating IPv4 when true
|
|
* @ifup: flag indicating interface up when true
|
|
*
|
|
* Enables or disables the qhash for the node in the child
|
|
* listen list that matches ipaddr. If no matching IP was found
|
|
* it will allocate and add a new child listen node to the
|
|
* parent listen node. The listen_list_lock is assumed to be
|
|
* held when called.
|
|
*/
|
|
static void i40iw_qhash_ctrl(struct i40iw_device *iwdev,
|
|
struct i40iw_cm_listener *parent_listen_node,
|
|
struct i40iw_cm_info *nfo,
|
|
u32 *ipaddr, bool ipv4, bool ifup)
|
|
{
|
|
struct list_head *child_listen_list = &parent_listen_node->child_listen_list;
|
|
struct i40iw_cm_listener *child_listen_node;
|
|
struct list_head *pos, *tpos;
|
|
enum i40iw_status_code ret;
|
|
bool node_allocated = false;
|
|
enum i40iw_quad_hash_manage_type op =
|
|
ifup ? I40IW_QHASH_MANAGE_TYPE_ADD : I40IW_QHASH_MANAGE_TYPE_DELETE;
|
|
|
|
list_for_each_safe(pos, tpos, child_listen_list) {
|
|
child_listen_node =
|
|
list_entry(pos,
|
|
struct i40iw_cm_listener,
|
|
child_listen_list);
|
|
if (!memcmp(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16))
|
|
goto set_qhash;
|
|
}
|
|
|
|
/* if not found then add a child listener if interface is going up */
|
|
if (!ifup)
|
|
return;
|
|
child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_ATOMIC);
|
|
if (!child_listen_node)
|
|
return;
|
|
node_allocated = true;
|
|
memcpy(child_listen_node, parent_listen_node, sizeof(*child_listen_node));
|
|
|
|
memcpy(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16);
|
|
|
|
set_qhash:
|
|
memcpy(nfo->loc_addr,
|
|
child_listen_node->loc_addr,
|
|
sizeof(nfo->loc_addr));
|
|
nfo->vlan_id = child_listen_node->vlan_id;
|
|
ret = i40iw_manage_qhash(iwdev, nfo,
|
|
I40IW_QHASH_TYPE_TCP_SYN,
|
|
op,
|
|
NULL, false);
|
|
if (!ret) {
|
|
child_listen_node->qhash_set = ifup;
|
|
if (node_allocated)
|
|
list_add(&child_listen_node->child_listen_list,
|
|
&parent_listen_node->child_listen_list);
|
|
} else if (node_allocated) {
|
|
kfree(child_listen_node);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_cm_disconnect_all - disconnect all connected qp's
|
|
* @iwdev: device pointer
|
|
*/
|
|
void i40iw_cm_disconnect_all(struct i40iw_device *iwdev)
|
|
{
|
|
struct i40iw_cm_core *cm_core = &iwdev->cm_core;
|
|
struct list_head *list_core_temp;
|
|
struct list_head *list_node;
|
|
struct i40iw_cm_node *cm_node;
|
|
unsigned long flags;
|
|
struct list_head connected_list;
|
|
struct ib_qp_attr attr;
|
|
|
|
INIT_LIST_HEAD(&connected_list);
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
list_for_each_safe(list_node, list_core_temp, &cm_core->connected_nodes) {
|
|
cm_node = container_of(list_node, struct i40iw_cm_node, list);
|
|
atomic_inc(&cm_node->ref_count);
|
|
list_add(&cm_node->connected_entry, &connected_list);
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
|
|
list_for_each_safe(list_node, list_core_temp, &connected_list) {
|
|
cm_node = container_of(list_node, struct i40iw_cm_node, connected_entry);
|
|
attr.qp_state = IB_QPS_ERR;
|
|
i40iw_modify_qp(&cm_node->iwqp->ibqp, &attr, IB_QP_STATE, NULL);
|
|
i40iw_rem_ref_cm_node(cm_node);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40iw_ifdown_notify - process an ifdown on an interface
|
|
* @iwdev: device pointer
|
|
* @ipaddr: Pointer to IPv4 or IPv6 address
|
|
* @ipv4: flag indicating IPv4 when true
|
|
* @ifup: flag indicating interface up when true
|
|
*/
|
|
void i40iw_if_notify(struct i40iw_device *iwdev, struct net_device *netdev,
|
|
u32 *ipaddr, bool ipv4, bool ifup)
|
|
{
|
|
struct i40iw_cm_core *cm_core = &iwdev->cm_core;
|
|
unsigned long flags;
|
|
struct i40iw_cm_listener *listen_node;
|
|
static const u32 ip_zero[4] = { 0, 0, 0, 0 };
|
|
struct i40iw_cm_info nfo;
|
|
u16 vlan_id = rdma_vlan_dev_vlan_id(netdev);
|
|
enum i40iw_status_code ret;
|
|
enum i40iw_quad_hash_manage_type op =
|
|
ifup ? I40IW_QHASH_MANAGE_TYPE_ADD : I40IW_QHASH_MANAGE_TYPE_DELETE;
|
|
|
|
/* Disable or enable qhash for listeners */
|
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
|
|
list_for_each_entry(listen_node, &cm_core->listen_nodes, list) {
|
|
if (vlan_id == listen_node->vlan_id &&
|
|
(!memcmp(listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16) ||
|
|
!memcmp(listen_node->loc_addr, ip_zero, ipv4 ? 4 : 16))) {
|
|
memcpy(nfo.loc_addr, listen_node->loc_addr,
|
|
sizeof(nfo.loc_addr));
|
|
nfo.loc_port = listen_node->loc_port;
|
|
nfo.ipv4 = listen_node->ipv4;
|
|
nfo.vlan_id = listen_node->vlan_id;
|
|
nfo.user_pri = listen_node->user_pri;
|
|
if (!list_empty(&listen_node->child_listen_list)) {
|
|
i40iw_qhash_ctrl(iwdev,
|
|
listen_node,
|
|
&nfo,
|
|
ipaddr, ipv4, ifup);
|
|
} else if (memcmp(listen_node->loc_addr, ip_zero,
|
|
ipv4 ? 4 : 16)) {
|
|
ret = i40iw_manage_qhash(iwdev,
|
|
&nfo,
|
|
I40IW_QHASH_TYPE_TCP_SYN,
|
|
op,
|
|
NULL,
|
|
false);
|
|
if (!ret)
|
|
listen_node->qhash_set = ifup;
|
|
}
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
|
|
/* disconnect any connected qp's on ifdown */
|
|
if (!ifup)
|
|
i40iw_cm_disconnect_all(iwdev);
|
|
}
|