ipoib.h

  1/*
  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.
  5 *
  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:
 11 *
 12 *     Redistribution and use in source and binary forms, with or
 13 *     without modification, are permitted provided that the following
 14 *     conditions are met:
 15 *
 16 *      - Redistributions of source code must retain the above
 17 *        copyright notice, this list of conditions and the following
 18 *        disclaimer.
 19 *
 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.
 24 *
 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
 32 * SOFTWARE.
 33 */
 34
 35#ifndef _IPOIB_H
 36#define _IPOIB_H
 37
 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>
 45
 46#include <net/neighbour.h>
 47#include <net/sch_generic.h>
 48
 49#include <linux/atomic.h>
 50
 51#include <rdma/ib_verbs.h>
 52#include <rdma/ib_pack.h>
 53#include <rdma/ib_sa.h>
 54#include <linux/sched.h>
 55/* constants */
 56
 57enum ipoib_flush_level {
 58	IPOIB_FLUSH_LIGHT,
 59	IPOIB_FLUSH_NORMAL,
 60	IPOIB_FLUSH_HEAVY
 61};
 62
 63enum {
 64	IPOIB_ENCAP_LEN		  = 4,
 65	IPOIB_PSEUDO_LEN	  = 20,
 66	IPOIB_HARD_LEN		  = IPOIB_ENCAP_LEN + IPOIB_PSEUDO_LEN,
 67
 68	IPOIB_UD_HEAD_SIZE	  = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
 69	IPOIB_UD_RX_SG		  = 2, /* max buffer needed for 4K mtu */
 70
 71	IPOIB_CM_MTU		  = 0x10000 - 0x10, /* padding to align header to 16 */
 72	IPOIB_CM_BUF_SIZE	  = IPOIB_CM_MTU  + IPOIB_ENCAP_LEN,
 73	IPOIB_CM_HEAD_SIZE	  = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
 74	IPOIB_CM_RX_SG		  = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
 75	IPOIB_RX_RING_SIZE	  = 256,
 76	IPOIB_TX_RING_SIZE	  = 128,
 77	IPOIB_MAX_QUEUE_SIZE	  = 8192,
 78	IPOIB_MIN_QUEUE_SIZE	  = 2,
 79	IPOIB_CM_MAX_CONN_QP	  = 4096,
 80
 81	IPOIB_NUM_WC		  = 4,
 82
 83	IPOIB_MAX_PATH_REC_QUEUE  = 3,
 84	IPOIB_MAX_MCAST_QUEUE	  = 64,
 85
 86	IPOIB_FLAG_OPER_UP	  = 0,
 87	IPOIB_FLAG_INITIALIZED	  = 1,
 88	IPOIB_FLAG_ADMIN_UP	  = 2,
 89	IPOIB_PKEY_ASSIGNED	  = 3,
 90	IPOIB_FLAG_SUBINTERFACE	  = 5,
 91	IPOIB_STOP_REAPER	  = 7,
 92	IPOIB_FLAG_ADMIN_CM	  = 9,
 93	IPOIB_FLAG_UMCAST	  = 10,
 94	IPOIB_NEIGH_TBL_FLUSH	  = 12,
 95	IPOIB_FLAG_DEV_ADDR_SET	  = 13,
 96	IPOIB_FLAG_DEV_ADDR_CTRL  = 14,
 97
 98	IPOIB_MAX_BACKOFF_SECONDS = 16,
 99
100	IPOIB_MCAST_FLAG_FOUND	  = 0,	/* used in set_multicast_list */
101	IPOIB_MCAST_FLAG_SENDONLY = 1,
102	/*
103	 * For IPOIB_MCAST_FLAG_BUSY
104	 * When set, in flight join and mcast->mc is unreliable
105	 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
106	 *   haven't started yet
107	 * When clear and mcast->mc is valid pointer, join was successful
108	 */
109	IPOIB_MCAST_FLAG_BUSY	  = 2,
110	IPOIB_MCAST_FLAG_ATTACHED = 3,
111
112	MAX_SEND_CQE		  = 64,
113	IPOIB_CM_COPYBREAK	  = 256,
114
115	IPOIB_NON_CHILD		  = 0,
116	IPOIB_LEGACY_CHILD	  = 1,
117	IPOIB_RTNL_CHILD	  = 2,
118};
119
120#define	IPOIB_OP_RECV   (1ul << 31)
121#ifdef CONFIG_INFINIBAND_IPOIB_CM
122#define	IPOIB_OP_CM     (1ul << 30)
123#else
124#define	IPOIB_OP_CM     (0)
125#endif
126
127#define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
128
129/* structs */
130
131struct ipoib_header {
132	__be16	proto;
133	u16	reserved;
134};
135
136struct ipoib_pseudo_header {
137	u8	hwaddr[INFINIBAND_ALEN];
138};
139
140static inline void skb_add_pseudo_hdr(struct sk_buff *skb)
141{
142	char *data = skb_push(skb, IPOIB_PSEUDO_LEN);
143
144	/*
145	 * only the ipoib header is present now, make room for a dummy
146	 * pseudo header and set skb field accordingly
147	 */
148	memset(data, 0, IPOIB_PSEUDO_LEN);
149	skb_reset_mac_header(skb);
150	skb_pull(skb, IPOIB_HARD_LEN);
151}
152
153static inline struct ipoib_dev_priv *ipoib_priv(const struct net_device *dev)
154{
155	struct rdma_netdev *rn = netdev_priv(dev);
156
157	return rn->clnt_priv;
158}
159
160/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
161struct ipoib_mcast {
162	struct ib_sa_mcmember_rec mcmember;
163	struct ib_sa_multicast	 *mc;
164	struct ipoib_ah		 *ah;
165
166	struct rb_node    rb_node;
167	struct list_head  list;
168
169	unsigned long created;
170	unsigned long backoff;
171	unsigned long delay_until;
172
173	unsigned long flags;
174	unsigned char logcount;
175
176	struct list_head  neigh_list;
177
178	struct sk_buff_head pkt_queue;
179
180	struct net_device *dev;
181	struct completion done;
182};
183
184struct ipoib_rx_buf {
185	struct sk_buff *skb;
186	u64		mapping[IPOIB_UD_RX_SG];
187};
188
189struct ipoib_tx_buf {
190	struct sk_buff *skb;
191	u64		mapping[MAX_SKB_FRAGS + 1];
192};
193
194struct ib_cm_id;
195
196struct ipoib_cm_data {
197	__be32 qpn; /* High byte MUST be ignored on receive */
198	__be32 mtu;
199};
200
201/*
202 * Quoting 10.3.1 Queue Pair and EE Context States:
203 *
204 * Note, for QPs that are associated with an SRQ, the Consumer should take the
205 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
206 * Reset State.  The Consumer may invoke the Destroy QP without first performing
207 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
208 * Last WQE Reached Event. However, if the Consumer does not wait for the
209 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
210 * leakage may occur. Therefore, it is good programming practice to tear down a
211 * QP that is associated with an SRQ by using the following process:
212 *
213 * - Put the QP in the Error State
214 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
215 * - either:
216 *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
217 *       to be empty or the number of Poll CQ operations has exceeded
218 *       CQ capacity size;
219 * - or
220 *       post another WR that completes on the same CQ and wait for this
221 *       WR to return as a WC;
222 * - and then invoke a Destroy QP or Reset QP.
223 *
224 * We use the second option and wait for a completion on the
225 * same CQ before destroying QPs attached to our SRQ.
226 */
227
228enum ipoib_cm_state {
229	IPOIB_CM_RX_LIVE,
230	IPOIB_CM_RX_ERROR, /* Ignored by stale task */
231	IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
232};
233
234struct ipoib_cm_rx {
235	struct ib_cm_id	       *id;
236	struct ib_qp	       *qp;
237	struct ipoib_cm_rx_buf *rx_ring;
238	struct list_head	list;
239	struct net_device      *dev;
240	unsigned long		jiffies;
241	enum ipoib_cm_state	state;
242	int			recv_count;
243};
244
245struct ipoib_cm_tx {
246	struct ib_cm_id	    *id;
247	struct ib_qp	    *qp;
248	struct list_head     list;
249	struct net_device   *dev;
250	struct ipoib_neigh  *neigh;
251	struct ipoib_tx_buf *tx_ring;
252	unsigned int	     tx_head;
253	unsigned int	     tx_tail;
254	unsigned long	     flags;
255	u32		     mtu;
256	unsigned int         max_send_sge;
257};
258
259struct ipoib_cm_rx_buf {
260	struct sk_buff *skb;
261	u64 mapping[IPOIB_CM_RX_SG];
262};
263
264struct ipoib_cm_dev_priv {
265	struct ib_srq	       *srq;
266	struct ipoib_cm_rx_buf *srq_ring;
267	struct ib_cm_id	       *id;
268	struct list_head	passive_ids;   /* state: LIVE */
269	struct list_head	rx_error_list; /* state: ERROR */
270	struct list_head	rx_flush_list; /* state: FLUSH, drain not started */
271	struct list_head	rx_drain_list; /* state: FLUSH, drain started */
272	struct list_head	rx_reap_list;  /* state: FLUSH, drain done */
273	struct work_struct      start_task;
274	struct work_struct      reap_task;
275	struct work_struct      skb_task;
276	struct work_struct      rx_reap_task;
277	struct delayed_work     stale_task;
278	struct sk_buff_head     skb_queue;
279	struct list_head	start_list;
280	struct list_head	reap_list;
281	struct ib_wc		ibwc[IPOIB_NUM_WC];
282	struct ib_sge		rx_sge[IPOIB_CM_RX_SG];
283	struct ib_recv_wr       rx_wr;
284	int			nonsrq_conn_qp;
285	int			max_cm_mtu;
286	int			num_frags;
287};
288
289struct ipoib_ethtool_st {
290	u16     coalesce_usecs;
291	u16     max_coalesced_frames;
292};
293
294struct ipoib_neigh_table;
295
296struct ipoib_neigh_hash {
297	struct ipoib_neigh_table       *ntbl;
298	struct ipoib_neigh __rcu      **buckets;
299	struct rcu_head			rcu;
300	u32				mask;
301	u32				size;
302};
303
304struct ipoib_neigh_table {
305	struct ipoib_neigh_hash __rcu  *htbl;
306	atomic_t			entries;
307	struct completion		flushed;
308	struct completion		deleted;
309};
310
311struct ipoib_qp_state_validate {
312	struct work_struct work;
313	struct ipoib_dev_priv   *priv;
314};
315
316/*
317 * Device private locking: network stack tx_lock protects members used
318 * in TX fast path, lock protects everything else.  lock nests inside
319 * of tx_lock (ie tx_lock must be acquired first if needed).
320 */
321struct ipoib_dev_priv {
322	spinlock_t lock;
323
324	struct net_device *dev;
325	void (*next_priv_destructor)(struct net_device *dev);
326
327	struct napi_struct send_napi;
328	struct napi_struct recv_napi;
329
330	unsigned long flags;
331
332	struct mutex mcast_mutex;
333
334	struct rb_root  path_tree;
335	struct list_head path_list;
336
337	struct ipoib_neigh_table ntbl;
338
339	struct ipoib_mcast *broadcast;
340	struct list_head multicast_list;
341	struct rb_root multicast_tree;
342
343	struct workqueue_struct *wq;
344	struct delayed_work mcast_task;
345	struct work_struct carrier_on_task;
346	struct work_struct reschedule_napi_work;
347	struct work_struct flush_light;
348	struct work_struct flush_normal;
349	struct work_struct flush_heavy;
350	struct work_struct restart_task;
351	struct work_struct tx_timeout_work;
352	struct delayed_work ah_reap_task;
353	struct delayed_work neigh_reap_task;
354	struct ib_device *ca;
355	u8		  port;
356	u16		  pkey;
357	u16		  pkey_index;
358	struct ib_pd	 *pd;
359	struct ib_cq	 *recv_cq;
360	struct ib_cq	 *send_cq;
361	struct ib_qp	 *qp;
362	u32		  qkey;
363
364	union ib_gid local_gid;
365	u32	     local_lid;
366
367	unsigned int admin_mtu;
368	unsigned int mcast_mtu;
369	unsigned int max_ib_mtu;
370
371	struct ipoib_rx_buf *rx_ring;
372
373	struct ipoib_tx_buf *tx_ring;
374	/* cyclic ring variables for managing tx_ring, for UD only */
375	unsigned int	     tx_head;
376	unsigned int	     tx_tail;
377	/* cyclic ring variables for counting overall outstanding send WRs */
378	unsigned int	     global_tx_head;
379	unsigned int	     global_tx_tail;
380	struct ib_sge	     tx_sge[MAX_SKB_FRAGS + 1];
381	struct ib_ud_wr      tx_wr;
382	struct ib_wc	     send_wc[MAX_SEND_CQE];
383
384	struct ib_recv_wr    rx_wr;
385	struct ib_sge	     rx_sge[IPOIB_UD_RX_SG];
386
387	struct ib_wc ibwc[IPOIB_NUM_WC];
388
389	struct list_head dead_ahs;
390
391	struct ib_event_handler event_handler;
392
393	struct net_device *parent;
394	/* 'child_intfs' and 'list' membership of all child devices are
395	 * protected by the netdev instance lock of 'dev'.
396	 */
397	struct list_head child_intfs;
398	struct list_head list;
399	int    child_type;
400
401#ifdef CONFIG_INFINIBAND_IPOIB_CM
402	struct ipoib_cm_dev_priv cm;
403#endif
404
405#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
406	struct list_head fs_list;
407	struct dentry *mcg_dentry;
408	struct dentry *path_dentry;
409#endif
410	u64	hca_caps;
411	u64	kernel_caps;
412	struct ipoib_ethtool_st ethtool;
413	unsigned int max_send_sge;
414	const struct net_device_ops	*rn_ops;
415};
416
417struct ipoib_ah {
418	struct net_device *dev;
419	struct ib_ah	  *ah;
420	struct list_head   list;
421	struct kref	   ref;
422	unsigned int	   last_send;
423	int  		   valid;
424};
425
426struct ipoib_path {
427	struct net_device    *dev;
428	struct sa_path_rec pathrec;
429	struct ipoib_ah      *ah;
430	struct sk_buff_head   queue;
431
432	struct list_head      neigh_list;
433
434	int		      query_id;
435	struct ib_sa_query   *query;
436	struct completion     done;
437
438	struct rb_node	      rb_node;
439	struct list_head      list;
440};
441
442struct ipoib_neigh {
443	struct ipoib_ah    *ah;
444#ifdef CONFIG_INFINIBAND_IPOIB_CM
445	struct ipoib_cm_tx *cm;
446#endif
447	u8     daddr[INFINIBAND_ALEN];
448	struct sk_buff_head queue;
449
450	struct net_device *dev;
451
452	struct list_head    list;
453	struct ipoib_neigh __rcu *hnext;
454	struct rcu_head     rcu;
455	refcount_t	    refcnt;
456	unsigned long       alive;
457};
458
459#define IPOIB_UD_MTU(ib_mtu)		(ib_mtu - IPOIB_ENCAP_LEN)
460#define IPOIB_UD_BUF_SIZE(ib_mtu)	(ib_mtu + IB_GRH_BYTES)
461
462void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
463static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
464{
465	if (refcount_dec_and_test(&neigh->refcnt))
466		ipoib_neigh_dtor(neigh);
467}
468struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
469struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
470				      struct net_device *dev);
471void ipoib_neigh_free(struct ipoib_neigh *neigh);
472void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
473
474extern struct workqueue_struct *ipoib_workqueue;
475
476/* functions */
477
478int ipoib_rx_poll(struct napi_struct *napi, int budget);
479int ipoib_tx_poll(struct napi_struct *napi, int budget);
480void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr);
481void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr);
482
483struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
484				 struct ib_pd *pd, struct rdma_ah_attr *attr);
485void ipoib_free_ah(struct kref *kref);
486static inline void ipoib_put_ah(struct ipoib_ah *ah)
487{
488	kref_put(&ah->ref, ipoib_free_ah);
489}
490int ipoib_open(struct net_device *dev);
491void ipoib_intf_free(struct net_device *dev);
492int ipoib_add_pkey_attr(struct net_device *dev);
493int ipoib_add_umcast_attr(struct net_device *dev);
494
495int ipoib_send(struct net_device *dev, struct sk_buff *skb,
496	       struct ib_ah *address, u32 dqpn);
497void ipoib_reap_ah(struct work_struct *work);
498
499void ipoib_napi_schedule_work(struct work_struct *work);
500struct ipoib_path *__path_find(struct net_device *dev, void *gid);
501void ipoib_mark_paths_invalid(struct net_device *dev);
502void ipoib_flush_paths(struct net_device *dev);
503struct net_device *ipoib_intf_alloc(struct ib_device *hca, u32 port,
504				    const char *format);
505int ipoib_intf_init(struct ib_device *hca, u32 port, const char *format,
506		    struct net_device *dev);
507void ipoib_ib_dev_flush_light(struct work_struct *work);
508void ipoib_ib_dev_flush_normal(struct work_struct *work);
509void ipoib_ib_dev_flush_heavy(struct work_struct *work);
510void ipoib_queue_work(struct ipoib_dev_priv *priv,
511		      enum ipoib_flush_level level);
512void ipoib_ib_tx_timeout_work(struct work_struct *work);
513void ipoib_ib_dev_cleanup(struct net_device *dev);
514
515int ipoib_ib_dev_open_default(struct net_device *dev);
516int ipoib_ib_dev_open(struct net_device *dev);
517void ipoib_ib_dev_stop(struct net_device *dev);
518void ipoib_ib_dev_up(struct net_device *dev);
519void ipoib_ib_dev_down(struct net_device *dev);
520int ipoib_ib_dev_stop_default(struct net_device *dev);
521void ipoib_pkey_dev_check_presence(struct net_device *dev);
522
523void ipoib_mcast_join_task(struct work_struct *work);
524void ipoib_mcast_carrier_on_task(struct work_struct *work);
525void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
526
527void ipoib_mcast_restart_task(struct work_struct *work);
528void ipoib_mcast_start_thread(struct net_device *dev);
529void ipoib_mcast_stop_thread(struct net_device *dev);
530
531void ipoib_mcast_dev_flush(struct net_device *dev);
532
533int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
534void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
535			struct ipoib_tx_buf *tx_req);
536
537struct rtnl_link_ops *ipoib_get_link_ops(void);
538
539static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
540				   struct ipoib_tx_buf *tx_req)
541{
542	int i, off;
543	struct sk_buff *skb = tx_req->skb;
544	skb_frag_t *frags = skb_shinfo(skb)->frags;
545	int nr_frags = skb_shinfo(skb)->nr_frags;
546	u64 *mapping = tx_req->mapping;
547
548	if (skb_headlen(skb)) {
549		priv->tx_sge[0].addr         = mapping[0];
550		priv->tx_sge[0].length       = skb_headlen(skb);
551		off = 1;
552	} else
553		off = 0;
554
555	for (i = 0; i < nr_frags; ++i) {
556		priv->tx_sge[i + off].addr = mapping[i + off];
557		priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
558	}
559	priv->tx_wr.wr.num_sge	     = nr_frags + off;
560}
561
562#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
563struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
564int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
565void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
566				  union ib_gid *gid,
567				  unsigned long *created,
568				  unsigned int *queuelen,
569				  unsigned int *complete,
570				  unsigned int *send_only);
571
572struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
573int ipoib_path_iter_next(struct ipoib_path_iter *iter);
574void ipoib_path_iter_read(struct ipoib_path_iter *iter,
575			  struct ipoib_path *path);
576#endif
577
578int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
579		       union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
580int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
581		       union ib_gid *mgid, u16 mlid);
582void ipoib_mcast_remove_list(struct list_head *remove_list);
583void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
584				struct list_head *remove_list);
585
586int ipoib_init_qp(struct net_device *dev);
587int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
588void ipoib_transport_dev_cleanup(struct net_device *dev);
589
590void ipoib_event(struct ib_event_handler *handler,
591		 struct ib_event *record);
592
593int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
594int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
595
596int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
597		     u16 pkey, int child_type);
598
599int  __init ipoib_netlink_init(void);
600void __exit ipoib_netlink_fini(void);
601
602void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
603int  ipoib_set_mode(struct net_device *dev, const char *buf);
604
605void ipoib_setup_common(struct net_device *dev);
606
607void ipoib_drain_cq(struct net_device *dev);
608
609void ipoib_set_ethtool_ops(struct net_device *dev);
610
611#define IPOIB_FLAGS_RC		0x80
612#define IPOIB_FLAGS_UC		0x40
613
614/* We don't support UC connections at the moment */
615#define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
616
617#ifdef CONFIG_INFINIBAND_IPOIB_CM
618
619extern int ipoib_max_conn_qp;
620
621static inline int ipoib_cm_admin_enabled(struct net_device *dev)
622{
623	struct ipoib_dev_priv *priv = ipoib_priv(dev);
624	return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
625		test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
626}
627
628static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
629{
630	struct ipoib_dev_priv *priv = ipoib_priv(dev);
631	return IPOIB_CM_SUPPORTED(hwaddr) &&
632		test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
633}
634
635static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
636
637{
638	return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
639}
640
641static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
642{
643	return neigh->cm;
644}
645
646static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
647{
648	neigh->cm = tx;
649}
650
651static inline int ipoib_cm_has_srq(struct net_device *dev)
652{
653	struct ipoib_dev_priv *priv = ipoib_priv(dev);
654	return !!priv->cm.srq;
655}
656
657static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
658{
659	struct ipoib_dev_priv *priv = ipoib_priv(dev);
660	return priv->cm.max_cm_mtu;
661}
662
663void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
664int ipoib_cm_dev_open(struct net_device *dev);
665void ipoib_cm_dev_stop(struct net_device *dev);
666int ipoib_cm_dev_init(struct net_device *dev);
667int ipoib_cm_add_mode_attr(struct net_device *dev);
668void ipoib_cm_dev_cleanup(struct net_device *dev);
669struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
670				    struct ipoib_neigh *neigh);
671void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
672void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
673			   unsigned int mtu);
674void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
675void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
676#else
677
678#define ipoib_max_conn_qp 0
679
680static inline int ipoib_cm_admin_enabled(struct net_device *dev)
681{
682	return 0;
683}
684static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
685
686{
687	return 0;
688}
689
690static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
691
692{
693	return 0;
694}
695
696static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
697{
698	return NULL;
699}
700
701static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
702{
703}
704
705static inline int ipoib_cm_has_srq(struct net_device *dev)
706{
707	return 0;
708}
709
710static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
711{
712	return 0;
713}
714
715static inline
716void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
717{
718	return;
719}
720
721static inline
722int ipoib_cm_dev_open(struct net_device *dev)
723{
724	return 0;
725}
726
727static inline
728void ipoib_cm_dev_stop(struct net_device *dev)
729{
730	return;
731}
732
733static inline
734int ipoib_cm_dev_init(struct net_device *dev)
735{
736	return -EOPNOTSUPP;
737}
738
739static inline
740void ipoib_cm_dev_cleanup(struct net_device *dev)
741{
742	return;
743}
744
745static inline
746struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
747				    struct ipoib_neigh *neigh)
748{
749	return NULL;
750}
751
752static inline
753void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
754{
755	return;
756}
757
758static inline
759int ipoib_cm_add_mode_attr(struct net_device *dev)
760{
761	return 0;
762}
763
764static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
765					 unsigned int mtu)
766{
767	dev_kfree_skb_any(skb);
768}
769
770static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
771{
772}
773
774static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
775{
776}
777#endif
778
779#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
780void ipoib_create_debug_files(struct net_device *dev);
781void ipoib_delete_debug_files(struct net_device *dev);
782void ipoib_register_debugfs(void);
783void ipoib_unregister_debugfs(void);
784#else
785static inline void ipoib_create_debug_files(struct net_device *dev) { }
786static inline void ipoib_delete_debug_files(struct net_device *dev) { }
787static inline void ipoib_register_debugfs(void) { }
788static inline void ipoib_unregister_debugfs(void) { }
789#endif
790
791#define ipoib_printk(level, priv, format, arg...)	\
792	printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
793#define ipoib_warn(priv, format, arg...)		\
794do {							\
795	static DEFINE_RATELIMIT_STATE(_rs,		\
796		10 * HZ /*10 seconds */,		\
797		100);		\
798	if (__ratelimit(&_rs))				\
799		ipoib_printk(KERN_WARNING, priv, format , ## arg);\
800} while (0)
801
802extern int ipoib_sendq_size;
803extern int ipoib_recvq_size;
804
805extern struct ib_sa_client ipoib_sa_client;
806
807#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
808extern int ipoib_debug_level;
809
810#define ipoib_dbg(priv, format, arg...)			\
811	do {						\
812		if (ipoib_debug_level > 0)			\
813			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
814	} while (0)
815#define ipoib_dbg_mcast(priv, format, arg...)		\
816	do {						\
817		if (mcast_debug_level > 0)		\
818			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
819	} while (0)
820#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
821#define ipoib_dbg(priv, format, arg...)			\
822	do { (void) (priv); } while (0)
823#define ipoib_dbg_mcast(priv, format, arg...)		\
824	do { (void) (priv); } while (0)
825#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
826
827#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
828#define ipoib_dbg_data(priv, format, arg...)		\
829	do {						\
830		if (data_debug_level > 0)		\
831			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
832	} while (0)
833#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
834#define ipoib_dbg_data(priv, format, arg...)		\
835	do { (void) (priv); } while (0)
836#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
837
838#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
839
840#endif /* _IPOIB_H */