2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
38 #include <linux/list.h>
39 #include <linux/skbuff.h>
40 #include <linux/netdevice.h>
41 #include <linux/workqueue.h>
42 #include <linux/kref.h>
43 #include <linux/if_infiniband.h>
44 #include <linux/mutex.h>
46 #include <net/neighbour.h>
47 #include <net/sch_generic.h>
49 #include <linux/atomic.h>
51 #include <rdma/ib_verbs.h>
52 #include <rdma/ib_pack.h>
53 #include <rdma/ib_sa.h>
54 #include <linux/sched.h>
58 enum ipoib_flush_level {
67 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
68 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
70 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
71 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
72 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
73 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
74 IPOIB_RX_RING_SIZE = 256,
75 IPOIB_TX_RING_SIZE = 128,
76 IPOIB_MAX_QUEUE_SIZE = 8192,
77 IPOIB_MIN_QUEUE_SIZE = 2,
78 IPOIB_CM_MAX_CONN_QP = 4096,
82 IPOIB_MAX_PATH_REC_QUEUE = 3,
83 IPOIB_MAX_MCAST_QUEUE = 3,
85 IPOIB_FLAG_OPER_UP = 0,
86 IPOIB_FLAG_INITIALIZED = 1,
87 IPOIB_FLAG_ADMIN_UP = 2,
88 IPOIB_PKEY_ASSIGNED = 3,
89 IPOIB_FLAG_SUBINTERFACE = 5,
91 IPOIB_STOP_REAPER = 7,
92 IPOIB_FLAG_ADMIN_CM = 9,
93 IPOIB_FLAG_UMCAST = 10,
94 IPOIB_STOP_NEIGH_GC = 11,
95 IPOIB_NEIGH_TBL_FLUSH = 12,
97 IPOIB_MAX_BACKOFF_SECONDS = 16,
99 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
100 IPOIB_MCAST_FLAG_SENDONLY = 1,
101 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
102 IPOIB_MCAST_FLAG_ATTACHED = 3,
103 IPOIB_MCAST_JOIN_STARTED = 4,
106 IPOIB_CM_COPYBREAK = 256,
109 IPOIB_LEGACY_CHILD = 1,
110 IPOIB_RTNL_CHILD = 2,
113 #define IPOIB_OP_RECV (1ul << 31)
114 #ifdef CONFIG_INFINIBAND_IPOIB_CM
115 #define IPOIB_OP_CM (1ul << 30)
117 #define IPOIB_OP_CM (0)
120 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
124 struct ipoib_header {
130 struct qdisc_skb_cb qdisc_cb;
131 u8 hwaddr[INFINIBAND_ALEN];
134 static inline struct ipoib_cb *ipoib_skb_cb(const struct sk_buff *skb)
136 BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct ipoib_cb));
137 return (struct ipoib_cb *)skb->cb;
140 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
142 struct ib_sa_mcmember_rec mcmember;
143 struct ib_sa_multicast *mc;
146 struct rb_node rb_node;
147 struct list_head list;
149 unsigned long created;
150 unsigned long backoff;
153 unsigned char logcount;
155 struct list_head neigh_list;
157 struct sk_buff_head pkt_queue;
159 struct net_device *dev;
160 struct completion done;
163 struct ipoib_rx_buf {
165 u64 mapping[IPOIB_UD_RX_SG];
168 struct ipoib_tx_buf {
170 u64 mapping[MAX_SKB_FRAGS + 1];
173 struct ipoib_cm_tx_buf {
180 struct ipoib_cm_data {
181 __be32 qpn; /* High byte MUST be ignored on receive */
186 * Quoting 10.3.1 Queue Pair and EE Context States:
188 * Note, for QPs that are associated with an SRQ, the Consumer should take the
189 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
190 * Reset State. The Consumer may invoke the Destroy QP without first performing
191 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
192 * Last WQE Reached Event. However, if the Consumer does not wait for the
193 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
194 * leakage may occur. Therefore, it is good programming practice to tear down a
195 * QP that is associated with an SRQ by using the following process:
197 * - Put the QP in the Error State
198 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
200 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
201 * to be empty or the number of Poll CQ operations has exceeded
204 * post another WR that completes on the same CQ and wait for this
205 * WR to return as a WC;
206 * - and then invoke a Destroy QP or Reset QP.
208 * We use the second option and wait for a completion on the
209 * same CQ before destroying QPs attached to our SRQ.
212 enum ipoib_cm_state {
214 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
215 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
221 struct ipoib_cm_rx_buf *rx_ring;
222 struct list_head list;
223 struct net_device *dev;
224 unsigned long jiffies;
225 enum ipoib_cm_state state;
232 struct list_head list;
233 struct net_device *dev;
234 struct ipoib_neigh *neigh;
235 struct ipoib_path *path;
236 struct ipoib_cm_tx_buf *tx_ring;
243 struct ipoib_cm_rx_buf {
245 u64 mapping[IPOIB_CM_RX_SG];
248 struct ipoib_cm_dev_priv {
250 struct ipoib_cm_rx_buf *srq_ring;
252 struct list_head passive_ids; /* state: LIVE */
253 struct list_head rx_error_list; /* state: ERROR */
254 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
255 struct list_head rx_drain_list; /* state: FLUSH, drain started */
256 struct list_head rx_reap_list; /* state: FLUSH, drain done */
257 struct work_struct start_task;
258 struct work_struct reap_task;
259 struct work_struct skb_task;
260 struct work_struct rx_reap_task;
261 struct delayed_work stale_task;
262 struct sk_buff_head skb_queue;
263 struct list_head start_list;
264 struct list_head reap_list;
265 struct ib_wc ibwc[IPOIB_NUM_WC];
266 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
267 struct ib_recv_wr rx_wr;
273 struct ipoib_ethtool_st {
275 u16 max_coalesced_frames;
278 struct ipoib_neigh_table;
280 struct ipoib_neigh_hash {
281 struct ipoib_neigh_table *ntbl;
282 struct ipoib_neigh __rcu **buckets;
288 struct ipoib_neigh_table {
289 struct ipoib_neigh_hash __rcu *htbl;
291 struct completion flushed;
292 struct completion deleted;
296 * Device private locking: network stack tx_lock protects members used
297 * in TX fast path, lock protects everything else. lock nests inside
298 * of tx_lock (ie tx_lock must be acquired first if needed).
300 struct ipoib_dev_priv {
303 struct net_device *dev;
305 struct napi_struct napi;
309 struct rw_semaphore vlan_rwsem;
311 struct rb_root path_tree;
312 struct list_head path_list;
314 struct ipoib_neigh_table ntbl;
316 struct ipoib_mcast *broadcast;
317 struct list_head multicast_list;
318 struct rb_root multicast_tree;
320 struct delayed_work mcast_task;
321 struct work_struct carrier_on_task;
322 struct work_struct flush_light;
323 struct work_struct flush_normal;
324 struct work_struct flush_heavy;
325 struct work_struct restart_task;
326 struct delayed_work ah_reap_task;
327 struct delayed_work neigh_reap_task;
328 struct ib_device *ca;
334 struct ib_cq *recv_cq;
335 struct ib_cq *send_cq;
339 union ib_gid local_gid;
342 unsigned int admin_mtu;
343 unsigned int mcast_mtu;
344 unsigned int max_ib_mtu;
346 struct ipoib_rx_buf *rx_ring;
348 struct ipoib_tx_buf *tx_ring;
351 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
352 struct ib_send_wr tx_wr;
353 unsigned tx_outstanding;
354 struct ib_wc send_wc[MAX_SEND_CQE];
356 struct ib_recv_wr rx_wr;
357 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
359 struct ib_wc ibwc[IPOIB_NUM_WC];
361 struct list_head dead_ahs;
363 struct ib_event_handler event_handler;
365 struct net_device *parent;
366 struct list_head child_intfs;
367 struct list_head list;
370 #ifdef CONFIG_INFINIBAND_IPOIB_CM
371 struct ipoib_cm_dev_priv cm;
374 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
375 struct list_head fs_list;
376 struct dentry *mcg_dentry;
377 struct dentry *path_dentry;
380 struct ipoib_ethtool_st ethtool;
381 struct timer_list poll_timer;
385 struct net_device *dev;
387 struct list_head list;
393 struct net_device *dev;
394 struct ib_sa_path_rec pathrec;
396 struct sk_buff_head queue;
398 struct list_head neigh_list;
401 struct ib_sa_query *query;
402 struct completion done;
404 struct rb_node rb_node;
405 struct list_head list;
411 #ifdef CONFIG_INFINIBAND_IPOIB_CM
412 struct ipoib_cm_tx *cm;
414 u8 daddr[INFINIBAND_ALEN];
415 struct sk_buff_head queue;
417 struct net_device *dev;
419 struct list_head list;
420 struct ipoib_neigh __rcu *hnext;
426 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
427 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
429 static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
431 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
434 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
435 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
437 if (atomic_dec_and_test(&neigh->refcnt))
438 ipoib_neigh_dtor(neigh);
440 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
441 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
442 struct net_device *dev);
443 void ipoib_neigh_free(struct ipoib_neigh *neigh);
444 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
446 extern struct workqueue_struct *ipoib_workqueue;
450 int ipoib_poll(struct napi_struct *napi, int budget);
451 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
452 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
454 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
455 struct ib_pd *pd, struct ib_ah_attr *attr);
456 void ipoib_free_ah(struct kref *kref);
457 static inline void ipoib_put_ah(struct ipoib_ah *ah)
459 kref_put(&ah->ref, ipoib_free_ah);
461 int ipoib_open(struct net_device *dev);
462 int ipoib_add_pkey_attr(struct net_device *dev);
463 int ipoib_add_umcast_attr(struct net_device *dev);
465 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
466 struct ipoib_ah *address, u32 qpn);
467 void ipoib_reap_ah(struct work_struct *work);
469 void ipoib_mark_paths_invalid(struct net_device *dev);
470 void ipoib_flush_paths(struct net_device *dev);
471 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
473 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
474 void ipoib_ib_dev_flush_light(struct work_struct *work);
475 void ipoib_ib_dev_flush_normal(struct work_struct *work);
476 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
477 void ipoib_pkey_event(struct work_struct *work);
478 void ipoib_ib_dev_cleanup(struct net_device *dev);
480 int ipoib_ib_dev_open(struct net_device *dev, int flush);
481 int ipoib_ib_dev_up(struct net_device *dev);
482 int ipoib_ib_dev_down(struct net_device *dev, int flush);
483 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
484 void ipoib_pkey_dev_check_presence(struct net_device *dev);
486 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
487 void ipoib_dev_cleanup(struct net_device *dev);
489 void ipoib_mcast_join_task(struct work_struct *work);
490 void ipoib_mcast_carrier_on_task(struct work_struct *work);
491 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
493 void ipoib_mcast_restart_task(struct work_struct *work);
494 int ipoib_mcast_start_thread(struct net_device *dev);
495 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
497 void ipoib_mcast_dev_down(struct net_device *dev);
498 void ipoib_mcast_dev_flush(struct net_device *dev);
500 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
501 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
502 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
503 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
505 unsigned long *created,
506 unsigned int *queuelen,
507 unsigned int *complete,
508 unsigned int *send_only);
510 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
511 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
512 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
513 struct ipoib_path *path);
516 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
517 union ib_gid *mgid, int set_qkey);
519 int ipoib_init_qp(struct net_device *dev);
520 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
521 void ipoib_transport_dev_cleanup(struct net_device *dev);
523 void ipoib_event(struct ib_event_handler *handler,
524 struct ib_event *record);
526 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
527 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
529 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
530 u16 pkey, int child_type);
532 int __init ipoib_netlink_init(void);
533 void __exit ipoib_netlink_fini(void);
535 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
536 int ipoib_set_mode(struct net_device *dev, const char *buf);
538 void ipoib_setup(struct net_device *dev);
540 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
541 void ipoib_drain_cq(struct net_device *dev);
543 void ipoib_set_ethtool_ops(struct net_device *dev);
544 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
546 #define IPOIB_FLAGS_RC 0x80
547 #define IPOIB_FLAGS_UC 0x40
549 /* We don't support UC connections at the moment */
550 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
552 #ifdef CONFIG_INFINIBAND_IPOIB_CM
554 extern int ipoib_max_conn_qp;
556 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
558 struct ipoib_dev_priv *priv = netdev_priv(dev);
559 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
560 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
563 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
565 struct ipoib_dev_priv *priv = netdev_priv(dev);
566 return IPOIB_CM_SUPPORTED(hwaddr) &&
567 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
570 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
573 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
576 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
581 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
586 static inline int ipoib_cm_has_srq(struct net_device *dev)
588 struct ipoib_dev_priv *priv = netdev_priv(dev);
589 return !!priv->cm.srq;
592 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
594 struct ipoib_dev_priv *priv = netdev_priv(dev);
595 return priv->cm.max_cm_mtu;
598 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
599 int ipoib_cm_dev_open(struct net_device *dev);
600 void ipoib_cm_dev_stop(struct net_device *dev);
601 int ipoib_cm_dev_init(struct net_device *dev);
602 int ipoib_cm_add_mode_attr(struct net_device *dev);
603 void ipoib_cm_dev_cleanup(struct net_device *dev);
604 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
605 struct ipoib_neigh *neigh);
606 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
607 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
609 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
610 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
615 #define ipoib_max_conn_qp 0
617 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
621 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
627 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
633 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
638 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
642 static inline int ipoib_cm_has_srq(struct net_device *dev)
647 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
653 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
659 int ipoib_cm_dev_open(struct net_device *dev)
665 void ipoib_cm_dev_stop(struct net_device *dev)
671 int ipoib_cm_dev_init(struct net_device *dev)
677 void ipoib_cm_dev_cleanup(struct net_device *dev)
683 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
684 struct ipoib_neigh *neigh)
690 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
696 int ipoib_cm_add_mode_attr(struct net_device *dev)
701 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
704 dev_kfree_skb_any(skb);
707 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
711 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
716 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
717 void ipoib_create_debug_files(struct net_device *dev);
718 void ipoib_delete_debug_files(struct net_device *dev);
719 int ipoib_register_debugfs(void);
720 void ipoib_unregister_debugfs(void);
722 static inline void ipoib_create_debug_files(struct net_device *dev) { }
723 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
724 static inline int ipoib_register_debugfs(void) { return 0; }
725 static inline void ipoib_unregister_debugfs(void) { }
728 #define ipoib_printk(level, priv, format, arg...) \
729 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
730 #define ipoib_warn(priv, format, arg...) \
731 ipoib_printk(KERN_WARNING, priv, format , ## arg)
733 extern int ipoib_sendq_size;
734 extern int ipoib_recvq_size;
736 extern struct ib_sa_client ipoib_sa_client;
738 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
739 extern int ipoib_debug_level;
741 #define ipoib_dbg(priv, format, arg...) \
743 if (ipoib_debug_level > 0) \
744 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
746 #define ipoib_dbg_mcast(priv, format, arg...) \
748 if (mcast_debug_level > 0) \
749 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
751 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
752 #define ipoib_dbg(priv, format, arg...) \
753 do { (void) (priv); } while (0)
754 #define ipoib_dbg_mcast(priv, format, arg...) \
755 do { (void) (priv); } while (0)
756 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
758 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
759 #define ipoib_dbg_data(priv, format, arg...) \
761 if (data_debug_level > 0) \
762 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
764 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
765 #define ipoib_dbg_data(priv, format, arg...) \
766 do { (void) (priv); } while (0)
767 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
769 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
771 extern const char ipoib_driver_version[];
773 #endif /* _IPOIB_H */