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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
Roland Dreier2a1d9b72005-08-10 23:03:10 -07003 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070033 */
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <linux/kref.h>
43#include <linux/if_infiniband.h>
Ingo Molnar95ed6442006-01-13 14:51:39 -080044#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
46#include <net/neighbour.h>
47
Arun Sharma600634972011-07-26 16:09:06 -070048#include <linux/atomic.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Roland Dreiera4d61e82005-08-25 13:40:04 -070050#include <rdma/ib_verbs.h>
51#include <rdma/ib_pack.h>
52#include <rdma/ib_sa.h>
Or Gerlitz19e364f62011-01-10 17:41:54 -080053#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
55/* constants */
56
Moni Shouaee1e2c82008-07-14 23:48:49 -070057enum ipoib_flush_level {
58 IPOIB_FLUSH_LIGHT,
59 IPOIB_FLUSH_NORMAL,
60 IPOIB_FLUSH_HEAVY
61};
62
Linus Torvalds1da177e2005-04-16 15:20:36 -070063enum {
Roland Dreier2337f802007-10-23 19:57:54 -070064 IPOIB_ENCAP_LEN = 4,
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Shirley Mabc7b3a32008-04-23 11:55:45 -070066 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
67 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
68
Roland Dreier2337f802007-10-23 19:57:54 -070069 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
70 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
71 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
72 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
Eli Cohenbc3a2902008-07-14 23:48:52 -070073 IPOIB_RX_RING_SIZE = 256,
74 IPOIB_TX_RING_SIZE = 128,
Shirley Ma0f485252006-04-10 09:43:58 -070075 IPOIB_MAX_QUEUE_SIZE = 8192,
76 IPOIB_MIN_QUEUE_SIZE = 2,
Pradeep Satyanarayana68e995a2008-01-25 14:15:24 -080077 IPOIB_CM_MAX_CONN_QP = 4096,
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Roland Dreier2337f802007-10-23 19:57:54 -070079 IPOIB_NUM_WC = 4,
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
81 IPOIB_MAX_PATH_REC_QUEUE = 3,
Roland Dreier2337f802007-10-23 19:57:54 -070082 IPOIB_MAX_MCAST_QUEUE = 3,
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
Roland Dreier2337f802007-10-23 19:57:54 -070084 IPOIB_FLAG_OPER_UP = 0,
85 IPOIB_FLAG_INITIALIZED = 1,
86 IPOIB_FLAG_ADMIN_UP = 2,
87 IPOIB_PKEY_ASSIGNED = 3,
88 IPOIB_PKEY_STOP = 4,
89 IPOIB_FLAG_SUBINTERFACE = 5,
90 IPOIB_MCAST_RUN = 6,
91 IPOIB_STOP_REAPER = 7,
Roland Dreier2337f802007-10-23 19:57:54 -070092 IPOIB_FLAG_ADMIN_CM = 9,
Michael S. Tsirkin1b524962007-08-16 15:36:16 +030093 IPOIB_FLAG_UMCAST = 10,
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95 IPOIB_MAX_BACKOFF_SECONDS = 16,
96
Roland Dreier2337f802007-10-23 19:57:54 -070097 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 IPOIB_MCAST_FLAG_SENDONLY = 1,
Roland Dreier2337f802007-10-23 19:57:54 -070099 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 IPOIB_MCAST_FLAG_ATTACHED = 3,
Eli Cohenf56bcd82008-04-29 13:46:53 -0700101
102 MAX_SEND_CQE = 16,
Eli Cohenf89271da2008-07-14 23:48:44 -0700103 IPOIB_CM_COPYBREAK = 256,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104};
105
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200106#define IPOIB_OP_RECV (1ul << 31)
107#ifdef CONFIG_INFINIBAND_IPOIB_CM
Michael S. Tsirkin1b524962007-08-16 15:36:16 +0300108#define IPOIB_OP_CM (1ul << 30)
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200109#else
Michael S. Tsirkin1b524962007-08-16 15:36:16 +0300110#define IPOIB_OP_CM (0)
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200111#endif
112
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113/* structs */
114
115struct ipoib_header {
Sean Hefty97f52eb2005-08-13 21:05:57 -0700116 __be16 proto;
117 u16 reserved;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118};
119
120struct ipoib_pseudoheader {
121 u8 hwaddr[INFINIBAND_ALEN];
122};
123
Sean Hefty81668832007-08-02 12:21:31 -0700124/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
125struct ipoib_mcast {
126 struct ib_sa_mcmember_rec mcmember;
127 struct ib_sa_multicast *mc;
Roland Dreier2337f802007-10-23 19:57:54 -0700128 struct ipoib_ah *ah;
Sean Hefty81668832007-08-02 12:21:31 -0700129
130 struct rb_node rb_node;
131 struct list_head list;
132
133 unsigned long created;
134 unsigned long backoff;
135
136 unsigned long flags;
137 unsigned char logcount;
138
139 struct list_head neigh_list;
140
141 struct sk_buff_head pkt_queue;
142
143 struct net_device *dev;
144};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
Roland Dreier1993d682005-10-28 15:30:34 -0700146struct ipoib_rx_buf {
147 struct sk_buff *skb;
Shirley Mabc7b3a32008-04-23 11:55:45 -0700148 u64 mapping[IPOIB_UD_RX_SG];
Roland Dreier1993d682005-10-28 15:30:34 -0700149};
150
151struct ipoib_tx_buf {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 struct sk_buff *skb;
Eli Cohen71437402008-01-30 18:30:53 +0200153 u64 mapping[MAX_SKB_FRAGS + 1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154};
155
Eli Cohene1123732008-07-14 23:48:52 -0700156struct ipoib_cm_tx_buf {
157 struct sk_buff *skb;
158 u64 mapping;
159};
160
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200161struct ib_cm_id;
162
163struct ipoib_cm_data {
164 __be32 qpn; /* High byte MUST be ignored on receive */
165 __be32 mtu;
166};
167
Michael S. Tsirkin518b1642007-05-21 15:04:59 +0300168/*
169 * Quoting 10.3.1 Queue Pair and EE Context States:
170 *
171 * Note, for QPs that are associated with an SRQ, the Consumer should take the
172 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
173 * Reset State. The Consumer may invoke the Destroy QP without first performing
174 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
175 * Last WQE Reached Event. However, if the Consumer does not wait for the
176 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
177 * leakage may occur. Therefore, it is good programming practice to tear down a
178 * QP that is associated with an SRQ by using the following process:
179 *
180 * - Put the QP in the Error State
181 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
182 * - either:
183 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
184 * to be empty or the number of Poll CQ operations has exceeded
185 * CQ capacity size;
186 * - or
187 * post another WR that completes on the same CQ and wait for this
188 * WR to return as a WC;
189 * - and then invoke a Destroy QP or Reset QP.
190 *
191 * We use the second option and wait for a completion on the
Michael S. Tsirkinec56dc02007-05-28 14:37:27 +0300192 * same CQ before destroying QPs attached to our SRQ.
Michael S. Tsirkin518b1642007-05-21 15:04:59 +0300193 */
194
195enum ipoib_cm_state {
196 IPOIB_CM_RX_LIVE,
197 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
198 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
199};
200
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200201struct ipoib_cm_rx {
Roland Dreier2337f802007-10-23 19:57:54 -0700202 struct ib_cm_id *id;
203 struct ib_qp *qp;
Pradeep Satyanarayana68e995a2008-01-25 14:15:24 -0800204 struct ipoib_cm_rx_buf *rx_ring;
Roland Dreier2337f802007-10-23 19:57:54 -0700205 struct list_head list;
206 struct net_device *dev;
207 unsigned long jiffies;
208 enum ipoib_cm_state state;
Pradeep Satyanarayana68e995a2008-01-25 14:15:24 -0800209 int recv_count;
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200210};
211
212struct ipoib_cm_tx {
Roland Dreier2337f802007-10-23 19:57:54 -0700213 struct ib_cm_id *id;
214 struct ib_qp *qp;
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200215 struct list_head list;
216 struct net_device *dev;
217 struct ipoib_neigh *neigh;
218 struct ipoib_path *path;
Eli Cohene1123732008-07-14 23:48:52 -0700219 struct ipoib_cm_tx_buf *tx_ring;
Roland Dreier2337f802007-10-23 19:57:54 -0700220 unsigned tx_head;
221 unsigned tx_tail;
222 unsigned long flags;
223 u32 mtu;
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200224};
225
226struct ipoib_cm_rx_buf {
227 struct sk_buff *skb;
228 u64 mapping[IPOIB_CM_RX_SG];
229};
230
231struct ipoib_cm_dev_priv {
Roland Dreier2337f802007-10-23 19:57:54 -0700232 struct ib_srq *srq;
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200233 struct ipoib_cm_rx_buf *srq_ring;
Roland Dreier2337f802007-10-23 19:57:54 -0700234 struct ib_cm_id *id;
235 struct list_head passive_ids; /* state: LIVE */
236 struct list_head rx_error_list; /* state: ERROR */
237 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
238 struct list_head rx_drain_list; /* state: FLUSH, drain started */
239 struct list_head rx_reap_list; /* state: FLUSH, drain done */
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200240 struct work_struct start_task;
241 struct work_struct reap_task;
242 struct work_struct skb_task;
Michael S. Tsirkin518b1642007-05-21 15:04:59 +0300243 struct work_struct rx_reap_task;
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200244 struct delayed_work stale_task;
245 struct sk_buff_head skb_queue;
Roland Dreier2337f802007-10-23 19:57:54 -0700246 struct list_head start_list;
247 struct list_head reap_list;
248 struct ib_wc ibwc[IPOIB_NUM_WC];
249 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200250 struct ib_recv_wr rx_wr;
Pradeep Satyanarayana68e995a2008-01-25 14:15:24 -0800251 int nonsrq_conn_qp;
Pradeep Satyanarayana586a6932007-12-21 13:08:23 -0800252 int max_cm_mtu;
253 int num_frags;
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200254};
255
Eli Cohen28d52b32008-04-16 21:09:33 -0700256struct ipoib_ethtool_st {
257 u16 coalesce_usecs;
258 u16 max_coalesced_frames;
259};
260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261/*
Roland Dreier943c2462008-09-30 10:36:21 -0700262 * Device private locking: network stack tx_lock protects members used
263 * in TX fast path, lock protects everything else. lock nests inside
264 * of tx_lock (ie tx_lock must be acquired first if needed).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 */
266struct ipoib_dev_priv {
267 spinlock_t lock;
268
269 struct net_device *dev;
270
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700271 struct napi_struct napi;
272
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 unsigned long flags;
274
Ingo Molnar95ed6442006-01-13 14:51:39 -0800275 struct mutex vlan_mutex;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276
277 struct rb_root path_tree;
278 struct list_head path_list;
279
280 struct ipoib_mcast *broadcast;
281 struct list_head multicast_list;
282 struct rb_root multicast_tree;
283
Yosef Etigin26bbf132007-05-19 08:51:54 -0700284 struct delayed_work pkey_poll_task;
David Howellsc4028952006-11-22 14:57:56 +0000285 struct delayed_work mcast_task;
Yossi Etigine8224e42008-09-16 11:57:45 -0700286 struct work_struct carrier_on_task;
Moni Shouaee1e2c82008-07-14 23:48:49 -0700287 struct work_struct flush_light;
288 struct work_struct flush_normal;
289 struct work_struct flush_heavy;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 struct work_struct restart_task;
David Howellsc4028952006-11-22 14:57:56 +0000291 struct delayed_work ah_reap_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292
293 struct ib_device *ca;
Roland Dreier2337f802007-10-23 19:57:54 -0700294 u8 port;
295 u16 pkey;
296 u16 pkey_index;
297 struct ib_pd *pd;
298 struct ib_mr *mr;
Eli Cohenf56bcd82008-04-29 13:46:53 -0700299 struct ib_cq *recv_cq;
300 struct ib_cq *send_cq;
Roland Dreier2337f802007-10-23 19:57:54 -0700301 struct ib_qp *qp;
302 u32 qkey;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
304 union ib_gid local_gid;
Roland Dreier2337f802007-10-23 19:57:54 -0700305 u16 local_lid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
307 unsigned int admin_mtu;
308 unsigned int mcast_mtu;
Shirley Mabc7b3a32008-04-23 11:55:45 -0700309 unsigned int max_ib_mtu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
Roland Dreier1993d682005-10-28 15:30:34 -0700311 struct ipoib_rx_buf *rx_ring;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
Roland Dreier1993d682005-10-28 15:30:34 -0700313 struct ipoib_tx_buf *tx_ring;
Roland Dreier2337f802007-10-23 19:57:54 -0700314 unsigned tx_head;
315 unsigned tx_tail;
Eli Cohen71437402008-01-30 18:30:53 +0200316 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
Roland Dreier1993d682005-10-28 15:30:34 -0700317 struct ib_send_wr tx_wr;
Roland Dreier2337f802007-10-23 19:57:54 -0700318 unsigned tx_outstanding;
Eli Cohenf56bcd82008-04-29 13:46:53 -0700319 struct ib_wc send_wc[MAX_SEND_CQE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
Shirley Mabc7b3a32008-04-23 11:55:45 -0700321 struct ib_recv_wr rx_wr;
322 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
323
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 struct ib_wc ibwc[IPOIB_NUM_WC];
325
326 struct list_head dead_ahs;
327
328 struct ib_event_handler event_handler;
329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 struct net_device *parent;
331 struct list_head child_intfs;
332 struct list_head list;
333
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200334#ifdef CONFIG_INFINIBAND_IPOIB_CM
335 struct ipoib_cm_dev_priv cm;
336#endif
337
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
339 struct list_head fs_list;
340 struct dentry *mcg_dentry;
Roland Dreier1732b0e2005-11-07 10:33:11 -0800341 struct dentry *path_dentry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342#endif
Eli Cohen40ca1982008-04-16 21:09:27 -0700343 int hca_caps;
Eli Cohen28d52b32008-04-16 21:09:33 -0700344 struct ipoib_ethtool_st ethtool;
Eli Cohen57ce41d2008-04-30 20:02:45 -0700345 struct timer_list poll_timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346};
347
348struct ipoib_ah {
349 struct net_device *dev;
Roland Dreier2337f802007-10-23 19:57:54 -0700350 struct ib_ah *ah;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 struct list_head list;
Roland Dreier2337f802007-10-23 19:57:54 -0700352 struct kref ref;
353 unsigned last_send;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354};
355
356struct ipoib_path {
357 struct net_device *dev;
358 struct ib_sa_path_rec pathrec;
359 struct ipoib_ah *ah;
360 struct sk_buff_head queue;
361
362 struct list_head neigh_list;
363
Roland Dreier2337f802007-10-23 19:57:54 -0700364 int query_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 struct ib_sa_query *query;
366 struct completion done;
367
Roland Dreier2337f802007-10-23 19:57:54 -0700368 struct rb_node rb_node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 struct list_head list;
Moni Shouaee1e2c82008-07-14 23:48:49 -0700370 int valid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371};
372
373struct ipoib_neigh {
374 struct ipoib_ah *ah;
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200375#ifdef CONFIG_INFINIBAND_IPOIB_CM
376 struct ipoib_cm_tx *cm;
377#endif
Roland Dreier2337f802007-10-23 19:57:54 -0700378 union ib_gid dgid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 struct sk_buff_head queue;
380
381 struct neighbour *neighbour;
Moni Shoua732a2172007-10-09 19:43:36 -0700382 struct net_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383
384 struct list_head list;
385};
386
Shirley Mabc7b3a32008-04-23 11:55:45 -0700387#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
388#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
389
390static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
391{
392 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
393}
394
Michael S. Tsirkin44af79f2006-02-20 21:50:39 -0800395/*
396 * We stash a pointer to our private neighbour information after our
397 * hardware address in neigh->ha. The ALIGN() expression here makes
398 * sure that this pointer is stored aligned so that an unaligned
399 * load is not needed to dereference it.
400 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
402{
Michael S. Tsirkin44af79f2006-02-20 21:50:39 -0800403 return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
404 INFINIBAND_ALEN, sizeof(void *));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405}
406
Moni Shoua732a2172007-10-09 19:43:36 -0700407struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh,
408 struct net_device *dev);
Michael S. Tsirkin2745b5b2006-11-16 14:16:47 +0200409void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
Michael S. Tsirkind2e06552006-04-04 19:59:40 +0300410
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411extern struct workqueue_struct *ipoib_workqueue;
412
413/* functions */
414
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700415int ipoib_poll(struct napi_struct *napi, int budget);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
Eli Cohen57ce41d2008-04-30 20:02:45 -0700417void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
419struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
420 struct ib_pd *pd, struct ib_ah_attr *attr);
421void ipoib_free_ah(struct kref *kref);
422static inline void ipoib_put_ah(struct ipoib_ah *ah)
423{
424 kref_put(&ah->ref, ipoib_free_ah);
425}
426
Roland Dreier8ae5a8a2005-11-02 20:51:01 -0800427int ipoib_open(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428int ipoib_add_pkey_attr(struct net_device *dev);
Or Gerlitz335a64a5a2007-10-08 10:13:00 +0200429int ipoib_add_umcast_attr(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430
431void ipoib_send(struct net_device *dev, struct sk_buff *skb,
432 struct ipoib_ah *address, u32 qpn);
David Howellsc4028952006-11-22 14:57:56 +0000433void ipoib_reap_ah(struct work_struct *work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434
Moni Shouaee1e2c82008-07-14 23:48:49 -0700435void ipoib_mark_paths_invalid(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436void ipoib_flush_paths(struct net_device *dev);
437struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
438
439int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
Moni Shouaee1e2c82008-07-14 23:48:49 -0700440void ipoib_ib_dev_flush_light(struct work_struct *work);
441void ipoib_ib_dev_flush_normal(struct work_struct *work);
442void ipoib_ib_dev_flush_heavy(struct work_struct *work);
Yosef Etigin26bbf132007-05-19 08:51:54 -0700443void ipoib_pkey_event(struct work_struct *work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444void ipoib_ib_dev_cleanup(struct net_device *dev);
445
446int ipoib_ib_dev_open(struct net_device *dev);
447int ipoib_ib_dev_up(struct net_device *dev);
Jack Morgenstein0b3ea082006-03-20 10:08:24 -0800448int ipoib_ib_dev_down(struct net_device *dev, int flush);
Yosef Etigin26bbf132007-05-19 08:51:54 -0700449int ipoib_ib_dev_stop(struct net_device *dev, int flush);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450
451int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
452void ipoib_dev_cleanup(struct net_device *dev);
453
David Howellsc4028952006-11-22 14:57:56 +0000454void ipoib_mcast_join_task(struct work_struct *work);
Yossi Etigine8224e42008-09-16 11:57:45 -0700455void ipoib_mcast_carrier_on_task(struct work_struct *work);
Jack Morgenstein37c22a72006-05-29 19:14:05 +0300456void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457
David Howellsc4028952006-11-22 14:57:56 +0000458void ipoib_mcast_restart_task(struct work_struct *work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459int ipoib_mcast_start_thread(struct net_device *dev);
Roland Dreier8d2cae02005-09-20 10:52:04 -0700460int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
462void ipoib_mcast_dev_down(struct net_device *dev);
463void ipoib_mcast_dev_flush(struct net_device *dev);
464
Roland Dreier8ae5a8a2005-11-02 20:51:01 -0800465#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
468void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
469 union ib_gid *gid,
470 unsigned long *created,
471 unsigned int *queuelen,
472 unsigned int *complete,
473 unsigned int *send_only);
Roland Dreier1732b0e2005-11-07 10:33:11 -0800474
475struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
476int ipoib_path_iter_next(struct ipoib_path_iter *iter);
477void ipoib_path_iter_read(struct ipoib_path_iter *iter,
478 struct ipoib_path *path);
Roland Dreier8ae5a8a2005-11-02 20:51:01 -0800479#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480
481int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
Eli Cohend0de1362008-07-14 23:48:50 -0700482 union ib_gid *mgid, int set_qkey);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483
Roland Dreier5b6810e2005-10-11 11:08:24 -0700484int ipoib_init_qp(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
486void ipoib_transport_dev_cleanup(struct net_device *dev);
487
488void ipoib_event(struct ib_event_handler *handler,
489 struct ib_event *record);
490
491int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
492int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
493
David Howellsc4028952006-11-22 14:57:56 +0000494void ipoib_pkey_poll(struct work_struct *work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495int ipoib_pkey_dev_delay_open(struct net_device *dev);
Michael S. Tsirkin2dfbfc32007-05-24 18:32:46 +0300496void ipoib_drain_cq(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497
Eli Cohen82c24c12008-04-16 21:09:32 -0700498void ipoib_set_ethtool_ops(struct net_device *dev);
Or Gerlitz83bb63f2008-10-22 15:49:49 -0700499int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
Eli Cohen82c24c12008-04-16 21:09:32 -0700500
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200501#ifdef CONFIG_INFINIBAND_IPOIB_CM
502
Roland Dreier2337f802007-10-23 19:57:54 -0700503#define IPOIB_FLAGS_RC 0x80
504#define IPOIB_FLAGS_UC 0x40
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200505
506/* We don't support UC connections at the moment */
507#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
508
Pradeep Satyanarayana68e995a2008-01-25 14:15:24 -0800509extern int ipoib_max_conn_qp;
510
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200511static inline int ipoib_cm_admin_enabled(struct net_device *dev)
512{
513 struct ipoib_dev_priv *priv = netdev_priv(dev);
514 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
515 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
516}
517
518static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
519{
520 struct ipoib_dev_priv *priv = netdev_priv(dev);
521 return IPOIB_CM_SUPPORTED(n->ha) &&
522 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
523}
524
525static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
526
527{
528 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
529}
530
531static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
532{
533 return neigh->cm;
534}
535
536static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
537{
538 neigh->cm = tx;
539}
540
Pradeep Satyanarayana68e995a2008-01-25 14:15:24 -0800541static inline int ipoib_cm_has_srq(struct net_device *dev)
542{
543 struct ipoib_dev_priv *priv = netdev_priv(dev);
544 return !!priv->cm.srq;
545}
546
Pradeep Satyanarayana586a6932007-12-21 13:08:23 -0800547static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
548{
549 struct ipoib_dev_priv *priv = netdev_priv(dev);
550 return priv->cm.max_cm_mtu;
551}
552
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200553void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
554int ipoib_cm_dev_open(struct net_device *dev);
555void ipoib_cm_dev_stop(struct net_device *dev);
556int ipoib_cm_dev_init(struct net_device *dev);
557int ipoib_cm_add_mode_attr(struct net_device *dev);
558void ipoib_cm_dev_cleanup(struct net_device *dev);
559struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
560 struct ipoib_neigh *neigh);
561void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
Roland Dreier2337f802007-10-23 19:57:54 -0700562void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200563 unsigned int mtu);
564void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
Michael S. Tsirkin1b524962007-08-16 15:36:16 +0300565void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200566#else
567
568struct ipoib_cm_tx;
569
Pradeep Satyanarayana68e995a2008-01-25 14:15:24 -0800570#define ipoib_max_conn_qp 0
571
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200572static inline int ipoib_cm_admin_enabled(struct net_device *dev)
573{
574 return 0;
575}
576static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
577
578{
579 return 0;
580}
581
582static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
583
584{
585 return 0;
586}
587
588static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
589{
590 return NULL;
591}
592
593static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
594{
595}
596
Pradeep Satyanarayana68e995a2008-01-25 14:15:24 -0800597static inline int ipoib_cm_has_srq(struct net_device *dev)
598{
599 return 0;
600}
601
Pradeep Satyanarayana586a6932007-12-21 13:08:23 -0800602static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
603{
604 return 0;
605}
606
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200607static inline
608void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
609{
610 return;
611}
612
613static inline
614int ipoib_cm_dev_open(struct net_device *dev)
615{
616 return 0;
617}
618
619static inline
620void ipoib_cm_dev_stop(struct net_device *dev)
621{
622 return;
623}
624
625static inline
626int ipoib_cm_dev_init(struct net_device *dev)
627{
628 return -ENOSYS;
629}
630
631static inline
632void ipoib_cm_dev_cleanup(struct net_device *dev)
633{
634 return;
635}
636
637static inline
638struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
639 struct ipoib_neigh *neigh)
640{
641 return NULL;
642}
643
644static inline
645void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
646{
647 return;
648}
649
650static inline
651int ipoib_cm_add_mode_attr(struct net_device *dev)
652{
653 return 0;
654}
655
Roland Dreier2337f802007-10-23 19:57:54 -0700656static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200657 unsigned int mtu)
658{
659 dev_kfree_skb_any(skb);
660}
661
662static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
663{
664}
665
Michael S. Tsirkin1b524962007-08-16 15:36:16 +0300666static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
667{
668}
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200669#endif
670
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
Roland Dreier1732b0e2005-11-07 10:33:11 -0800672void ipoib_create_debug_files(struct net_device *dev);
673void ipoib_delete_debug_files(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674int ipoib_register_debugfs(void);
675void ipoib_unregister_debugfs(void);
676#else
Roland Dreier1732b0e2005-11-07 10:33:11 -0800677static inline void ipoib_create_debug_files(struct net_device *dev) { }
678static inline void ipoib_delete_debug_files(struct net_device *dev) { }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679static inline int ipoib_register_debugfs(void) { return 0; }
680static inline void ipoib_unregister_debugfs(void) { }
681#endif
682
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683#define ipoib_printk(level, priv, format, arg...) \
684 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
685#define ipoib_warn(priv, format, arg...) \
686 ipoib_printk(KERN_WARNING, priv, format , ## arg)
687
Shirley Ma0f485252006-04-10 09:43:58 -0700688extern int ipoib_sendq_size;
689extern int ipoib_recvq_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690
Michael S. Tsirkinc1a0b232006-08-21 16:40:12 -0700691extern struct ib_sa_client ipoib_sa_client;
692
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
694extern int ipoib_debug_level;
695
696#define ipoib_dbg(priv, format, arg...) \
Roland Dreier2337f802007-10-23 19:57:54 -0700697 do { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 if (ipoib_debug_level > 0) \
699 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
700 } while (0)
701#define ipoib_dbg_mcast(priv, format, arg...) \
Roland Dreier2337f802007-10-23 19:57:54 -0700702 do { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 if (mcast_debug_level > 0) \
704 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
705 } while (0)
706#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
707#define ipoib_dbg(priv, format, arg...) \
708 do { (void) (priv); } while (0)
709#define ipoib_dbg_mcast(priv, format, arg...) \
710 do { (void) (priv); } while (0)
711#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
712
713#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
714#define ipoib_dbg_data(priv, format, arg...) \
Roland Dreier2337f802007-10-23 19:57:54 -0700715 do { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 if (data_debug_level > 0) \
717 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
718 } while (0)
719#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
720#define ipoib_dbg_data(priv, format, arg...) \
721 do { (void) (priv); } while (0)
722#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
723
Michael S. Tsirkin839fcab2007-02-05 22:12:23 +0200724#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
725
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726#endif /* _IPOIB_H */