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 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
136 struct ib_sa_mcmember_rec mcmember;
137 struct ib_sa_multicast *mc;
140 struct rb_node rb_node;
141 struct list_head list;
143 unsigned long created;
144 unsigned long backoff;
147 unsigned char logcount;
149 struct list_head neigh_list;
151 struct sk_buff_head pkt_queue;
153 struct net_device *dev;
154 struct completion done;
157 struct ipoib_rx_buf {
159 u64 mapping[IPOIB_UD_RX_SG];
162 struct ipoib_tx_buf {
164 u64 mapping[MAX_SKB_FRAGS + 1];
167 struct ipoib_cm_tx_buf {
174 struct ipoib_cm_data {
175 __be32 qpn; /* High byte MUST be ignored on receive */
180 * Quoting 10.3.1 Queue Pair and EE Context States:
182 * Note, for QPs that are associated with an SRQ, the Consumer should take the
183 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
184 * Reset State. The Consumer may invoke the Destroy QP without first performing
185 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
186 * Last WQE Reached Event. However, if the Consumer does not wait for the
187 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
188 * leakage may occur. Therefore, it is good programming practice to tear down a
189 * QP that is associated with an SRQ by using the following process:
191 * - Put the QP in the Error State
192 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
194 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
195 * to be empty or the number of Poll CQ operations has exceeded
198 * post another WR that completes on the same CQ and wait for this
199 * WR to return as a WC;
200 * - and then invoke a Destroy QP or Reset QP.
202 * We use the second option and wait for a completion on the
203 * same CQ before destroying QPs attached to our SRQ.
206 enum ipoib_cm_state {
208 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
209 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
215 struct ipoib_cm_rx_buf *rx_ring;
216 struct list_head list;
217 struct net_device *dev;
218 unsigned long jiffies;
219 enum ipoib_cm_state state;
226 struct list_head list;
227 struct net_device *dev;
228 struct ipoib_neigh *neigh;
229 struct ipoib_path *path;
230 struct ipoib_cm_tx_buf *tx_ring;
237 struct ipoib_cm_rx_buf {
239 u64 mapping[IPOIB_CM_RX_SG];
242 struct ipoib_cm_dev_priv {
244 struct ipoib_cm_rx_buf *srq_ring;
246 struct list_head passive_ids; /* state: LIVE */
247 struct list_head rx_error_list; /* state: ERROR */
248 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
249 struct list_head rx_drain_list; /* state: FLUSH, drain started */
250 struct list_head rx_reap_list; /* state: FLUSH, drain done */
251 struct work_struct start_task;
252 struct work_struct reap_task;
253 struct work_struct skb_task;
254 struct work_struct rx_reap_task;
255 struct delayed_work stale_task;
256 struct sk_buff_head skb_queue;
257 struct list_head start_list;
258 struct list_head reap_list;
259 struct ib_wc ibwc[IPOIB_NUM_WC];
260 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
261 struct ib_recv_wr rx_wr;
267 struct ipoib_ethtool_st {
269 u16 max_coalesced_frames;
272 struct ipoib_neigh_table;
274 struct ipoib_neigh_hash {
275 struct ipoib_neigh_table *ntbl;
276 struct ipoib_neigh __rcu **buckets;
282 struct ipoib_neigh_table {
283 struct ipoib_neigh_hash __rcu *htbl;
285 struct completion flushed;
286 struct completion deleted;
290 * Device private locking: network stack tx_lock protects members used
291 * in TX fast path, lock protects everything else. lock nests inside
292 * of tx_lock (ie tx_lock must be acquired first if needed).
294 struct ipoib_dev_priv {
297 struct net_device *dev;
299 struct napi_struct napi;
303 struct rw_semaphore vlan_rwsem;
305 struct rb_root path_tree;
306 struct list_head path_list;
308 struct ipoib_neigh_table ntbl;
310 struct ipoib_mcast *broadcast;
311 struct list_head multicast_list;
312 struct rb_root multicast_tree;
314 struct delayed_work mcast_task;
315 struct work_struct carrier_on_task;
316 struct work_struct flush_light;
317 struct work_struct flush_normal;
318 struct work_struct flush_heavy;
319 struct work_struct restart_task;
320 struct delayed_work ah_reap_task;
321 struct delayed_work neigh_reap_task;
322 struct ib_device *ca;
328 struct ib_cq *recv_cq;
329 struct ib_cq *send_cq;
333 union ib_gid local_gid;
336 unsigned int admin_mtu;
337 unsigned int mcast_mtu;
338 unsigned int max_ib_mtu;
340 struct ipoib_rx_buf *rx_ring;
342 struct ipoib_tx_buf *tx_ring;
345 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
346 struct ib_send_wr tx_wr;
347 unsigned tx_outstanding;
348 struct ib_wc send_wc[MAX_SEND_CQE];
350 struct ib_recv_wr rx_wr;
351 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
353 struct ib_wc ibwc[IPOIB_NUM_WC];
355 struct list_head dead_ahs;
357 struct ib_event_handler event_handler;
359 struct net_device *parent;
360 struct list_head child_intfs;
361 struct list_head list;
364 #ifdef CONFIG_INFINIBAND_IPOIB_CM
365 struct ipoib_cm_dev_priv cm;
368 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
369 struct list_head fs_list;
370 struct dentry *mcg_dentry;
371 struct dentry *path_dentry;
374 struct ipoib_ethtool_st ethtool;
375 struct timer_list poll_timer;
379 struct net_device *dev;
381 struct list_head list;
387 struct net_device *dev;
388 struct ib_sa_path_rec pathrec;
390 struct sk_buff_head queue;
392 struct list_head neigh_list;
395 struct ib_sa_query *query;
396 struct completion done;
398 struct rb_node rb_node;
399 struct list_head list;
405 #ifdef CONFIG_INFINIBAND_IPOIB_CM
406 struct ipoib_cm_tx *cm;
408 u8 daddr[INFINIBAND_ALEN];
409 struct sk_buff_head queue;
411 struct net_device *dev;
413 struct list_head list;
414 struct ipoib_neigh __rcu *hnext;
420 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
421 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
423 static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
425 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
428 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
429 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
431 if (atomic_dec_and_test(&neigh->refcnt))
432 ipoib_neigh_dtor(neigh);
434 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
435 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
436 struct net_device *dev);
437 void ipoib_neigh_free(struct ipoib_neigh *neigh);
438 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
440 extern struct workqueue_struct *ipoib_workqueue;
444 int ipoib_poll(struct napi_struct *napi, int budget);
445 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
446 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
448 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
449 struct ib_pd *pd, struct ib_ah_attr *attr);
450 void ipoib_free_ah(struct kref *kref);
451 static inline void ipoib_put_ah(struct ipoib_ah *ah)
453 kref_put(&ah->ref, ipoib_free_ah);
455 int ipoib_open(struct net_device *dev);
456 int ipoib_add_pkey_attr(struct net_device *dev);
457 int ipoib_add_umcast_attr(struct net_device *dev);
459 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
460 struct ipoib_ah *address, u32 qpn);
461 void ipoib_reap_ah(struct work_struct *work);
463 void ipoib_mark_paths_invalid(struct net_device *dev);
464 void ipoib_flush_paths(struct net_device *dev);
465 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
467 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
468 void ipoib_ib_dev_flush_light(struct work_struct *work);
469 void ipoib_ib_dev_flush_normal(struct work_struct *work);
470 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
471 void ipoib_pkey_event(struct work_struct *work);
472 void ipoib_ib_dev_cleanup(struct net_device *dev);
474 int ipoib_ib_dev_open(struct net_device *dev, int flush);
475 int ipoib_ib_dev_up(struct net_device *dev);
476 int ipoib_ib_dev_down(struct net_device *dev, int flush);
477 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
478 void ipoib_pkey_dev_check_presence(struct net_device *dev);
480 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
481 void ipoib_dev_cleanup(struct net_device *dev);
483 void ipoib_mcast_join_task(struct work_struct *work);
484 void ipoib_mcast_carrier_on_task(struct work_struct *work);
485 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
487 void ipoib_mcast_restart_task(struct work_struct *work);
488 int ipoib_mcast_start_thread(struct net_device *dev);
489 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
491 void ipoib_mcast_dev_down(struct net_device *dev);
492 void ipoib_mcast_dev_flush(struct net_device *dev);
494 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
495 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
496 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
497 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
499 unsigned long *created,
500 unsigned int *queuelen,
501 unsigned int *complete,
502 unsigned int *send_only);
504 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
505 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
506 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
507 struct ipoib_path *path);
510 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
511 union ib_gid *mgid, int set_qkey);
513 int ipoib_init_qp(struct net_device *dev);
514 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
515 void ipoib_transport_dev_cleanup(struct net_device *dev);
517 void ipoib_event(struct ib_event_handler *handler,
518 struct ib_event *record);
520 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
521 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
523 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
524 u16 pkey, int child_type);
526 int __init ipoib_netlink_init(void);
527 void __exit ipoib_netlink_fini(void);
529 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
530 int ipoib_set_mode(struct net_device *dev, const char *buf);
532 void ipoib_setup(struct net_device *dev);
534 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
535 void ipoib_drain_cq(struct net_device *dev);
537 void ipoib_set_ethtool_ops(struct net_device *dev);
538 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
540 #define IPOIB_FLAGS_RC 0x80
541 #define IPOIB_FLAGS_UC 0x40
543 /* We don't support UC connections at the moment */
544 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
546 #ifdef CONFIG_INFINIBAND_IPOIB_CM
548 extern int ipoib_max_conn_qp;
550 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
552 struct ipoib_dev_priv *priv = netdev_priv(dev);
553 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
554 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
557 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
559 struct ipoib_dev_priv *priv = netdev_priv(dev);
560 return IPOIB_CM_SUPPORTED(hwaddr) &&
561 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
564 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
567 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
570 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
575 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
580 static inline int ipoib_cm_has_srq(struct net_device *dev)
582 struct ipoib_dev_priv *priv = netdev_priv(dev);
583 return !!priv->cm.srq;
586 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
588 struct ipoib_dev_priv *priv = netdev_priv(dev);
589 return priv->cm.max_cm_mtu;
592 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
593 int ipoib_cm_dev_open(struct net_device *dev);
594 void ipoib_cm_dev_stop(struct net_device *dev);
595 int ipoib_cm_dev_init(struct net_device *dev);
596 int ipoib_cm_add_mode_attr(struct net_device *dev);
597 void ipoib_cm_dev_cleanup(struct net_device *dev);
598 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
599 struct ipoib_neigh *neigh);
600 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
601 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
603 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
604 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
609 #define ipoib_max_conn_qp 0
611 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
615 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
621 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
627 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
632 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
636 static inline int ipoib_cm_has_srq(struct net_device *dev)
641 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
647 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
653 int ipoib_cm_dev_open(struct net_device *dev)
659 void ipoib_cm_dev_stop(struct net_device *dev)
665 int ipoib_cm_dev_init(struct net_device *dev)
671 void ipoib_cm_dev_cleanup(struct net_device *dev)
677 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
678 struct ipoib_neigh *neigh)
684 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
690 int ipoib_cm_add_mode_attr(struct net_device *dev)
695 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
698 dev_kfree_skb_any(skb);
701 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
705 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
710 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
711 void ipoib_create_debug_files(struct net_device *dev);
712 void ipoib_delete_debug_files(struct net_device *dev);
713 int ipoib_register_debugfs(void);
714 void ipoib_unregister_debugfs(void);
716 static inline void ipoib_create_debug_files(struct net_device *dev) { }
717 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
718 static inline int ipoib_register_debugfs(void) { return 0; }
719 static inline void ipoib_unregister_debugfs(void) { }
722 #define ipoib_printk(level, priv, format, arg...) \
723 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
724 #define ipoib_warn(priv, format, arg...) \
725 ipoib_printk(KERN_WARNING, priv, format , ## arg)
727 extern int ipoib_sendq_size;
728 extern int ipoib_recvq_size;
730 extern struct ib_sa_client ipoib_sa_client;
732 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
733 extern int ipoib_debug_level;
735 #define ipoib_dbg(priv, format, arg...) \
737 if (ipoib_debug_level > 0) \
738 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
740 #define ipoib_dbg_mcast(priv, format, arg...) \
742 if (mcast_debug_level > 0) \
743 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
745 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
746 #define ipoib_dbg(priv, format, arg...) \
747 do { (void) (priv); } while (0)
748 #define ipoib_dbg_mcast(priv, format, arg...) \
749 do { (void) (priv); } while (0)
750 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
752 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
753 #define ipoib_dbg_data(priv, format, arg...) \
755 if (data_debug_level > 0) \
756 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
758 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
759 #define ipoib_dbg_data(priv, format, arg...) \
760 do { (void) (priv); } while (0)
761 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
763 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
765 extern const char ipoib_driver_version[];
767 #endif /* _IPOIB_H */