377 lines
11 KiB
C
377 lines
11 KiB
C
/*
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* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2004 Voltaire, Inc. 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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* OpenIB.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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* $Id: ipoib.h 1358 2004-12-17 22:00:11Z roland $
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*/
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#ifndef _IPOIB_H
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#define _IPOIB_H
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#include <linux/list.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/workqueue.h>
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#include <linux/pci.h>
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#include <linux/config.h>
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#include <linux/kref.h>
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#include <linux/if_infiniband.h>
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#include <linux/mutex.h>
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#include <net/neighbour.h>
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#include <asm/atomic.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_pack.h>
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#include <rdma/ib_sa.h>
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/* constants */
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enum {
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IPOIB_PACKET_SIZE = 2048,
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IPOIB_BUF_SIZE = IPOIB_PACKET_SIZE + IB_GRH_BYTES,
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IPOIB_ENCAP_LEN = 4,
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IPOIB_RX_RING_SIZE = 128,
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IPOIB_TX_RING_SIZE = 64,
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IPOIB_NUM_WC = 4,
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IPOIB_MAX_PATH_REC_QUEUE = 3,
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IPOIB_MAX_MCAST_QUEUE = 3,
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IPOIB_FLAG_OPER_UP = 0,
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IPOIB_FLAG_INITIALIZED = 1,
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IPOIB_FLAG_ADMIN_UP = 2,
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IPOIB_PKEY_ASSIGNED = 3,
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IPOIB_PKEY_STOP = 4,
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IPOIB_FLAG_SUBINTERFACE = 5,
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IPOIB_MCAST_RUN = 6,
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IPOIB_STOP_REAPER = 7,
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IPOIB_MCAST_STARTED = 8,
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IPOIB_MAX_BACKOFF_SECONDS = 16,
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IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
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IPOIB_MCAST_FLAG_SENDONLY = 1,
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IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
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IPOIB_MCAST_FLAG_ATTACHED = 3,
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};
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/* structs */
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struct ipoib_header {
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__be16 proto;
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u16 reserved;
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};
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struct ipoib_pseudoheader {
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u8 hwaddr[INFINIBAND_ALEN];
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};
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struct ipoib_mcast;
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struct ipoib_rx_buf {
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struct sk_buff *skb;
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dma_addr_t mapping;
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};
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struct ipoib_tx_buf {
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struct sk_buff *skb;
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DECLARE_PCI_UNMAP_ADDR(mapping)
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};
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/*
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* Device private locking: tx_lock protects members used in TX fast
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* path (and we use LLTX so upper layers don't do extra locking).
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* lock protects everything else. lock nests inside of tx_lock (ie
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* tx_lock must be acquired first if needed).
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*/
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struct ipoib_dev_priv {
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spinlock_t lock;
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struct net_device *dev;
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unsigned long flags;
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struct mutex mcast_mutex;
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struct mutex vlan_mutex;
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struct rb_root path_tree;
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struct list_head path_list;
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struct ipoib_mcast *broadcast;
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struct list_head multicast_list;
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struct rb_root multicast_tree;
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struct work_struct pkey_task;
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struct work_struct mcast_task;
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struct work_struct flush_task;
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struct work_struct restart_task;
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struct work_struct ah_reap_task;
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struct ib_device *ca;
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u8 port;
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u16 pkey;
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struct ib_pd *pd;
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struct ib_mr *mr;
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struct ib_cq *cq;
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struct ib_qp *qp;
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u32 qkey;
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union ib_gid local_gid;
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u16 local_lid;
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u8 local_rate;
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unsigned int admin_mtu;
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unsigned int mcast_mtu;
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struct ipoib_rx_buf *rx_ring;
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spinlock_t tx_lock;
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struct ipoib_tx_buf *tx_ring;
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unsigned tx_head;
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unsigned tx_tail;
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struct ib_sge tx_sge;
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struct ib_send_wr tx_wr;
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struct ib_wc ibwc[IPOIB_NUM_WC];
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struct list_head dead_ahs;
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struct ib_event_handler event_handler;
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struct net_device_stats stats;
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struct net_device *parent;
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struct list_head child_intfs;
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struct list_head list;
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#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
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struct list_head fs_list;
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struct dentry *mcg_dentry;
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struct dentry *path_dentry;
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#endif
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};
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struct ipoib_ah {
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struct net_device *dev;
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struct ib_ah *ah;
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struct list_head list;
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struct kref ref;
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unsigned last_send;
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};
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struct ipoib_path {
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struct net_device *dev;
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struct ib_sa_path_rec pathrec;
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struct ipoib_ah *ah;
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struct sk_buff_head queue;
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struct list_head neigh_list;
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int query_id;
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struct ib_sa_query *query;
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struct completion done;
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struct rb_node rb_node;
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struct list_head list;
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};
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struct ipoib_neigh {
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struct ipoib_ah *ah;
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struct sk_buff_head queue;
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struct neighbour *neighbour;
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struct list_head list;
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};
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/*
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* We stash a pointer to our private neighbour information after our
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* hardware address in neigh->ha. The ALIGN() expression here makes
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* sure that this pointer is stored aligned so that an unaligned
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* load is not needed to dereference it.
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*/
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static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
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{
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return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
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INFINIBAND_ALEN, sizeof(void *));
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}
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extern struct workqueue_struct *ipoib_workqueue;
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/* functions */
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void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
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struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
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struct ib_pd *pd, struct ib_ah_attr *attr);
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void ipoib_free_ah(struct kref *kref);
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static inline void ipoib_put_ah(struct ipoib_ah *ah)
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{
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kref_put(&ah->ref, ipoib_free_ah);
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}
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int ipoib_open(struct net_device *dev);
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int ipoib_add_pkey_attr(struct net_device *dev);
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void ipoib_send(struct net_device *dev, struct sk_buff *skb,
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struct ipoib_ah *address, u32 qpn);
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void ipoib_reap_ah(void *dev_ptr);
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void ipoib_flush_paths(struct net_device *dev);
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struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
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int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
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void ipoib_ib_dev_flush(void *dev);
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void ipoib_ib_dev_cleanup(struct net_device *dev);
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int ipoib_ib_dev_open(struct net_device *dev);
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int ipoib_ib_dev_up(struct net_device *dev);
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int ipoib_ib_dev_down(struct net_device *dev, int flush);
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int ipoib_ib_dev_stop(struct net_device *dev);
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int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
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void ipoib_dev_cleanup(struct net_device *dev);
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void ipoib_mcast_join_task(void *dev_ptr);
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void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
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struct sk_buff *skb);
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void ipoib_mcast_restart_task(void *dev_ptr);
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int ipoib_mcast_start_thread(struct net_device *dev);
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int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
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void ipoib_mcast_dev_down(struct net_device *dev);
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void ipoib_mcast_dev_flush(struct net_device *dev);
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#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
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struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
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int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
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void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
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union ib_gid *gid,
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unsigned long *created,
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unsigned int *queuelen,
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unsigned int *complete,
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unsigned int *send_only);
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struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
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int ipoib_path_iter_next(struct ipoib_path_iter *iter);
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void ipoib_path_iter_read(struct ipoib_path_iter *iter,
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struct ipoib_path *path);
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#endif
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int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
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union ib_gid *mgid);
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int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
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union ib_gid *mgid);
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int ipoib_init_qp(struct net_device *dev);
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int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
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void ipoib_transport_dev_cleanup(struct net_device *dev);
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void ipoib_event(struct ib_event_handler *handler,
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struct ib_event *record);
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int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
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int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
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void ipoib_pkey_poll(void *dev);
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int ipoib_pkey_dev_delay_open(struct net_device *dev);
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#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
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void ipoib_create_debug_files(struct net_device *dev);
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void ipoib_delete_debug_files(struct net_device *dev);
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int ipoib_register_debugfs(void);
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void ipoib_unregister_debugfs(void);
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#else
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static inline void ipoib_create_debug_files(struct net_device *dev) { }
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static inline void ipoib_delete_debug_files(struct net_device *dev) { }
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static inline int ipoib_register_debugfs(void) { return 0; }
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static inline void ipoib_unregister_debugfs(void) { }
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#endif
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#define ipoib_printk(level, priv, format, arg...) \
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printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
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#define ipoib_warn(priv, format, arg...) \
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ipoib_printk(KERN_WARNING, priv, format , ## arg)
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#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
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extern int ipoib_debug_level;
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#define ipoib_dbg(priv, format, arg...) \
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do { \
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if (ipoib_debug_level > 0) \
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ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
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} while (0)
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#define ipoib_dbg_mcast(priv, format, arg...) \
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do { \
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if (mcast_debug_level > 0) \
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ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
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} while (0)
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#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
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#define ipoib_dbg(priv, format, arg...) \
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do { (void) (priv); } while (0)
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#define ipoib_dbg_mcast(priv, format, arg...) \
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do { (void) (priv); } while (0)
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#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
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#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
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#define ipoib_dbg_data(priv, format, arg...) \
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do { \
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if (data_debug_level > 0) \
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ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
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} while (0)
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#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
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#define ipoib_dbg_data(priv, format, arg...) \
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do { (void) (priv); } while (0)
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#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
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#define IPOIB_GID_FMT "%x:%x:%x:%x:%x:%x:%x:%x"
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#define IPOIB_GID_ARG(gid) be16_to_cpup((__be16 *) ((gid).raw + 0)), \
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be16_to_cpup((__be16 *) ((gid).raw + 2)), \
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be16_to_cpup((__be16 *) ((gid).raw + 4)), \
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be16_to_cpup((__be16 *) ((gid).raw + 6)), \
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be16_to_cpup((__be16 *) ((gid).raw + 8)), \
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be16_to_cpup((__be16 *) ((gid).raw + 10)), \
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be16_to_cpup((__be16 *) ((gid).raw + 12)), \
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be16_to_cpup((__be16 *) ((gid).raw + 14))
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#endif /* _IPOIB_H */
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