2012-03-21 06:39:06 +08:00
|
|
|
/*******************************************************************
|
|
|
|
* This file is part of the Emulex RoCE Device Driver for *
|
|
|
|
* RoCE (RDMA over Converged Ethernet) adapters. *
|
|
|
|
* Copyright (C) 2008-2012 Emulex. All rights reserved. *
|
|
|
|
* EMULEX and SLI are trademarks of Emulex. *
|
|
|
|
* www.emulex.com *
|
|
|
|
* *
|
|
|
|
* This program is free software; you can redistribute it and/or *
|
|
|
|
* modify it under the terms of version 2 of the GNU General *
|
|
|
|
* Public License as published by the Free Software Foundation. *
|
|
|
|
* This program is distributed in the hope that it will be useful. *
|
|
|
|
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
|
|
|
|
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
|
|
|
|
* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
|
|
|
|
* TO BE LEGALLY INVALID. See the GNU General Public License for *
|
|
|
|
* more details, a copy of which can be found in the file COPYING *
|
|
|
|
* included with this package. *
|
|
|
|
*
|
|
|
|
* Contact Information:
|
|
|
|
* linux-drivers@emulex.com
|
|
|
|
*
|
|
|
|
* Emulex
|
|
|
|
* 3333 Susan Street
|
|
|
|
* Costa Mesa, CA 92626
|
|
|
|
*******************************************************************/
|
|
|
|
|
|
|
|
#include <net/neighbour.h>
|
|
|
|
#include <net/netevent.h>
|
|
|
|
|
|
|
|
#include <rdma/ib_addr.h>
|
|
|
|
|
|
|
|
#include "ocrdma.h"
|
|
|
|
#include "ocrdma_verbs.h"
|
|
|
|
#include "ocrdma_ah.h"
|
|
|
|
#include "ocrdma_hw.h"
|
|
|
|
|
2014-07-02 14:06:04 +08:00
|
|
|
#define OCRDMA_VID_PCP_SHIFT 0xD
|
|
|
|
|
2013-08-07 15:22:33 +08:00
|
|
|
static inline int set_av_attr(struct ocrdma_dev *dev, struct ocrdma_ah *ah,
|
2012-03-21 06:39:06 +08:00
|
|
|
struct ib_ah_attr *attr, int pdid)
|
|
|
|
{
|
|
|
|
int status = 0;
|
|
|
|
u16 vlan_tag; bool vlan_enabled = false;
|
|
|
|
struct ocrdma_eth_vlan eth;
|
|
|
|
struct ocrdma_grh grh;
|
|
|
|
int eth_sz;
|
|
|
|
|
|
|
|
memset(ð, 0, sizeof(eth));
|
|
|
|
memset(&grh, 0, sizeof(grh));
|
|
|
|
|
|
|
|
ah->sgid_index = attr->grh.sgid_index;
|
|
|
|
|
2013-12-13 00:03:15 +08:00
|
|
|
vlan_tag = attr->vlan_id;
|
2013-08-26 17:57:50 +08:00
|
|
|
if (!vlan_tag || (vlan_tag > 0xFFF))
|
|
|
|
vlan_tag = dev->pvid;
|
2012-03-21 06:39:06 +08:00
|
|
|
if (vlan_tag && (vlan_tag < 0x1000)) {
|
|
|
|
eth.eth_type = cpu_to_be16(0x8100);
|
|
|
|
eth.roce_eth_type = cpu_to_be16(OCRDMA_ROCE_ETH_TYPE);
|
2014-07-02 14:06:04 +08:00
|
|
|
vlan_tag |= (dev->sl & 0x07) << OCRDMA_VID_PCP_SHIFT;
|
2012-03-21 06:39:06 +08:00
|
|
|
eth.vlan_tag = cpu_to_be16(vlan_tag);
|
|
|
|
eth_sz = sizeof(struct ocrdma_eth_vlan);
|
|
|
|
vlan_enabled = true;
|
|
|
|
} else {
|
|
|
|
eth.eth_type = cpu_to_be16(OCRDMA_ROCE_ETH_TYPE);
|
|
|
|
eth_sz = sizeof(struct ocrdma_eth_basic);
|
|
|
|
}
|
|
|
|
memcpy(ð.smac[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
|
2013-12-13 00:03:15 +08:00
|
|
|
memcpy(ð.dmac[0], attr->dmac, ETH_ALEN);
|
|
|
|
status = ocrdma_resolve_dmac(dev, attr, ð.dmac[0]);
|
2012-03-21 06:39:06 +08:00
|
|
|
if (status)
|
|
|
|
return status;
|
|
|
|
status = ocrdma_query_gid(&dev->ibdev, 1, attr->grh.sgid_index,
|
|
|
|
(union ib_gid *)&grh.sgid[0]);
|
|
|
|
if (status)
|
|
|
|
return status;
|
|
|
|
|
|
|
|
grh.tclass_flow = cpu_to_be32((6 << 28) |
|
|
|
|
(attr->grh.traffic_class << 24) |
|
|
|
|
attr->grh.flow_label);
|
|
|
|
/* 0x1b is next header value in GRH */
|
|
|
|
grh.pdid_hoplimit = cpu_to_be32((pdid << 16) |
|
|
|
|
(0x1b << 8) | attr->grh.hop_limit);
|
|
|
|
|
|
|
|
memcpy(&grh.dgid[0], attr->grh.dgid.raw, sizeof(attr->grh.dgid.raw));
|
|
|
|
memcpy(&ah->av->eth_hdr, ð, eth_sz);
|
|
|
|
memcpy((u8 *)ah->av + eth_sz, &grh, sizeof(struct ocrdma_grh));
|
|
|
|
if (vlan_enabled)
|
|
|
|
ah->av->valid |= OCRDMA_AV_VLAN_VALID;
|
2013-12-05 18:18:01 +08:00
|
|
|
ah->av->valid = cpu_to_le32(ah->av->valid);
|
2012-03-21 06:39:06 +08:00
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct ib_ah *ocrdma_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
|
|
|
|
{
|
|
|
|
u32 *ahid_addr;
|
|
|
|
int status;
|
|
|
|
struct ocrdma_ah *ah;
|
|
|
|
struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
|
2013-08-07 15:22:32 +08:00
|
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
|
2012-03-21 06:39:06 +08:00
|
|
|
|
|
|
|
if (!(attr->ah_flags & IB_AH_GRH))
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
|
2014-06-10 22:02:13 +08:00
|
|
|
if (atomic_cmpxchg(&dev->update_sl, 1, 0))
|
|
|
|
ocrdma_init_service_level(dev);
|
2014-02-04 14:27:10 +08:00
|
|
|
ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
|
2012-03-21 06:39:06 +08:00
|
|
|
if (!ah)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
status = ocrdma_alloc_av(dev, ah);
|
|
|
|
if (status)
|
|
|
|
goto av_err;
|
2013-08-07 15:22:33 +08:00
|
|
|
status = set_av_attr(dev, ah, attr, pd->id);
|
2012-03-21 06:39:06 +08:00
|
|
|
if (status)
|
|
|
|
goto av_conf_err;
|
|
|
|
|
|
|
|
/* if pd is for the user process, pass the ah_id to user space */
|
|
|
|
if ((pd->uctx) && (pd->uctx->ah_tbl.va)) {
|
|
|
|
ahid_addr = pd->uctx->ah_tbl.va + attr->dlid;
|
|
|
|
*ahid_addr = ah->id;
|
|
|
|
}
|
|
|
|
return &ah->ibah;
|
|
|
|
|
|
|
|
av_conf_err:
|
|
|
|
ocrdma_free_av(dev, ah);
|
|
|
|
av_err:
|
|
|
|
kfree(ah);
|
|
|
|
return ERR_PTR(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
int ocrdma_destroy_ah(struct ib_ah *ibah)
|
|
|
|
{
|
|
|
|
struct ocrdma_ah *ah = get_ocrdma_ah(ibah);
|
2013-08-07 15:22:33 +08:00
|
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibah->device);
|
|
|
|
|
|
|
|
ocrdma_free_av(dev, ah);
|
2012-03-21 06:39:06 +08:00
|
|
|
kfree(ah);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ocrdma_query_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
|
|
|
|
{
|
|
|
|
struct ocrdma_ah *ah = get_ocrdma_ah(ibah);
|
|
|
|
struct ocrdma_av *av = ah->av;
|
|
|
|
struct ocrdma_grh *grh;
|
|
|
|
attr->ah_flags |= IB_AH_GRH;
|
|
|
|
if (ah->av->valid & Bit(1)) {
|
|
|
|
grh = (struct ocrdma_grh *)((u8 *)ah->av +
|
|
|
|
sizeof(struct ocrdma_eth_vlan));
|
|
|
|
attr->sl = be16_to_cpu(av->eth_hdr.vlan_tag) >> 13;
|
|
|
|
} else {
|
|
|
|
grh = (struct ocrdma_grh *)((u8 *)ah->av +
|
|
|
|
sizeof(struct ocrdma_eth_basic));
|
|
|
|
attr->sl = 0;
|
|
|
|
}
|
|
|
|
memcpy(&attr->grh.dgid.raw[0], &grh->dgid[0], sizeof(grh->dgid));
|
|
|
|
attr->grh.sgid_index = ah->sgid_index;
|
|
|
|
attr->grh.hop_limit = be32_to_cpu(grh->pdid_hoplimit) & 0xff;
|
|
|
|
attr->grh.traffic_class = be32_to_cpu(grh->tclass_flow) >> 24;
|
|
|
|
attr->grh.flow_label = be32_to_cpu(grh->tclass_flow) & 0x00ffffffff;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ocrdma_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
|
|
|
|
{
|
|
|
|
/* modify_ah is unsupported */
|
|
|
|
return -ENOSYS;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ocrdma_process_mad(struct ib_device *ibdev,
|
|
|
|
int process_mad_flags,
|
|
|
|
u8 port_num,
|
|
|
|
struct ib_wc *in_wc,
|
|
|
|
struct ib_grh *in_grh,
|
|
|
|
struct ib_mad *in_mad, struct ib_mad *out_mad)
|
|
|
|
{
|
|
|
|
return IB_MAD_RESULT_SUCCESS;
|
|
|
|
}
|