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 * $Id: ipoib.h 1358 2004-12-17 22:00:11Z roland $ 35 */ 36 37 #ifndef _IPOIB_H 38 #define _IPOIB_H 39 40 #include <linux/list.h> 41 #include <linux/skbuff.h> 42 #include <linux/netdevice.h> 43 #include <linux/workqueue.h> 44 #include <linux/pci.h> 45 #include <linux/config.h> 46 #include <linux/kref.h> 47 #include <linux/if_infiniband.h> 48 49 #include <net/neighbour.h> 50 51 #include <asm/atomic.h> 52 #include <asm/semaphore.h> 53 54 #include <rdma/ib_verbs.h> 55 #include <rdma/ib_pack.h> 56 #include <rdma/ib_sa.h> 57 58 /* constants */ 59 60 enum { 61 IPOIB_PACKET_SIZE = 2048, 62 IPOIB_BUF_SIZE = IPOIB_PACKET_SIZE + IB_GRH_BYTES, 63 64 IPOIB_ENCAP_LEN = 4, 65 66 IPOIB_RX_RING_SIZE = 128, 67 IPOIB_TX_RING_SIZE = 64, 68 69 IPOIB_NUM_WC = 4, 70 71 IPOIB_MAX_PATH_REC_QUEUE = 3, 72 IPOIB_MAX_MCAST_QUEUE = 3, 73 74 IPOIB_FLAG_OPER_UP = 0, 75 IPOIB_FLAG_ADMIN_UP = 1, 76 IPOIB_PKEY_ASSIGNED = 2, 77 IPOIB_PKEY_STOP = 3, 78 IPOIB_FLAG_SUBINTERFACE = 4, 79 IPOIB_MCAST_RUN = 5, 80 IPOIB_STOP_REAPER = 6, 81 82 IPOIB_MAX_BACKOFF_SECONDS = 16, 83 84 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */ 85 IPOIB_MCAST_FLAG_SENDONLY = 1, 86 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */ 87 IPOIB_MCAST_FLAG_ATTACHED = 3, 88 }; 89 90 /* structs */ 91 92 struct ipoib_header { 93 __be16 proto; 94 u16 reserved; 95 }; 96 97 struct ipoib_pseudoheader { 98 u8 hwaddr[INFINIBAND_ALEN]; 99 }; 100 101 struct ipoib_mcast; 102 103 struct ipoib_buf { 104 struct sk_buff *skb; 105 DECLARE_PCI_UNMAP_ADDR(mapping) 106 }; 107 108 /* 109 * Device private locking: tx_lock protects members used in TX fast 110 * path (and we use LLTX so upper layers don't do extra locking). 111 * lock protects everything else. lock nests inside of tx_lock (ie 112 * tx_lock must be acquired first if needed). 113 */ 114 struct ipoib_dev_priv { 115 spinlock_t lock; 116 117 struct net_device *dev; 118 119 unsigned long flags; 120 121 struct semaphore mcast_mutex; 122 struct semaphore vlan_mutex; 123 124 struct rb_root path_tree; 125 struct list_head path_list; 126 127 struct ipoib_mcast *broadcast; 128 struct list_head multicast_list; 129 struct rb_root multicast_tree; 130 131 struct work_struct pkey_task; 132 struct work_struct mcast_task; 133 struct work_struct flush_task; 134 struct work_struct restart_task; 135 struct work_struct ah_reap_task; 136 137 struct ib_device *ca; 138 u8 port; 139 u16 pkey; 140 struct ib_pd *pd; 141 struct ib_mr *mr; 142 struct ib_cq *cq; 143 struct ib_qp *qp; 144 u32 qkey; 145 146 union ib_gid local_gid; 147 u16 local_lid; 148 u8 local_rate; 149 150 unsigned int admin_mtu; 151 unsigned int mcast_mtu; 152 153 struct ipoib_buf *rx_ring; 154 155 spinlock_t tx_lock; 156 struct ipoib_buf *tx_ring; 157 unsigned tx_head; 158 unsigned tx_tail; 159 struct ib_sge tx_sge; 160 struct ib_send_wr tx_wr; 161 162 struct ib_wc ibwc[IPOIB_NUM_WC]; 163 164 struct list_head dead_ahs; 165 166 struct ib_event_handler event_handler; 167 168 struct net_device_stats stats; 169 170 struct net_device *parent; 171 struct list_head child_intfs; 172 struct list_head list; 173 174 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 175 struct list_head fs_list; 176 struct dentry *mcg_dentry; 177 #endif 178 }; 179 180 struct ipoib_ah { 181 struct net_device *dev; 182 struct ib_ah *ah; 183 struct list_head list; 184 struct kref ref; 185 unsigned last_send; 186 }; 187 188 struct ipoib_path { 189 struct net_device *dev; 190 struct ib_sa_path_rec pathrec; 191 struct ipoib_ah *ah; 192 struct sk_buff_head queue; 193 194 struct list_head neigh_list; 195 196 int query_id; 197 struct ib_sa_query *query; 198 struct completion done; 199 200 struct rb_node rb_node; 201 struct list_head list; 202 }; 203 204 struct ipoib_neigh { 205 struct ipoib_ah *ah; 206 struct sk_buff_head queue; 207 208 struct neighbour *neighbour; 209 210 struct list_head list; 211 }; 212 213 static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh) 214 { 215 return (struct ipoib_neigh **) (neigh->ha + 24 - 216 (offsetof(struct neighbour, ha) & 4)); 217 } 218 219 extern struct workqueue_struct *ipoib_workqueue; 220 221 /* functions */ 222 223 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 224 225 struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 226 struct ib_pd *pd, struct ib_ah_attr *attr); 227 void ipoib_free_ah(struct kref *kref); 228 static inline void ipoib_put_ah(struct ipoib_ah *ah) 229 { 230 kref_put(&ah->ref, ipoib_free_ah); 231 } 232 233 int ipoib_add_pkey_attr(struct net_device *dev); 234 235 void ipoib_send(struct net_device *dev, struct sk_buff *skb, 236 struct ipoib_ah *address, u32 qpn); 237 void ipoib_reap_ah(void *dev_ptr); 238 239 void ipoib_flush_paths(struct net_device *dev); 240 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); 241 242 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 243 void ipoib_ib_dev_flush(void *dev); 244 void ipoib_ib_dev_cleanup(struct net_device *dev); 245 246 int ipoib_ib_dev_open(struct net_device *dev); 247 int ipoib_ib_dev_up(struct net_device *dev); 248 int ipoib_ib_dev_down(struct net_device *dev); 249 int ipoib_ib_dev_stop(struct net_device *dev); 250 251 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 252 void ipoib_dev_cleanup(struct net_device *dev); 253 254 void ipoib_mcast_join_task(void *dev_ptr); 255 void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid, 256 struct sk_buff *skb); 257 258 void ipoib_mcast_restart_task(void *dev_ptr); 259 int ipoib_mcast_start_thread(struct net_device *dev); 260 int ipoib_mcast_stop_thread(struct net_device *dev); 261 262 void ipoib_mcast_dev_down(struct net_device *dev); 263 void ipoib_mcast_dev_flush(struct net_device *dev); 264 265 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 266 void ipoib_mcast_iter_free(struct ipoib_mcast_iter *iter); 267 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 268 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 269 union ib_gid *gid, 270 unsigned long *created, 271 unsigned int *queuelen, 272 unsigned int *complete, 273 unsigned int *send_only); 274 275 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, 276 union ib_gid *mgid); 277 int ipoib_mcast_detach(struct net_device *dev, u16 mlid, 278 union ib_gid *mgid); 279 280 int ipoib_qp_create(struct net_device *dev); 281 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 282 void ipoib_transport_dev_cleanup(struct net_device *dev); 283 284 void ipoib_event(struct ib_event_handler *handler, 285 struct ib_event *record); 286 287 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 288 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 289 290 void ipoib_pkey_poll(void *dev); 291 int ipoib_pkey_dev_delay_open(struct net_device *dev); 292 293 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 294 int ipoib_create_debug_file(struct net_device *dev); 295 void ipoib_delete_debug_file(struct net_device *dev); 296 int ipoib_register_debugfs(void); 297 void ipoib_unregister_debugfs(void); 298 #else 299 static inline int ipoib_create_debug_file(struct net_device *dev) { return 0; } 300 static inline void ipoib_delete_debug_file(struct net_device *dev) { } 301 static inline int ipoib_register_debugfs(void) { return 0; } 302 static inline void ipoib_unregister_debugfs(void) { } 303 #endif 304 305 306 #define ipoib_printk(level, priv, format, arg...) \ 307 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 308 #define ipoib_warn(priv, format, arg...) \ 309 ipoib_printk(KERN_WARNING, priv, format , ## arg) 310 311 312 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 313 extern int ipoib_debug_level; 314 315 #define ipoib_dbg(priv, format, arg...) \ 316 do { \ 317 if (ipoib_debug_level > 0) \ 318 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 319 } while (0) 320 #define ipoib_dbg_mcast(priv, format, arg...) \ 321 do { \ 322 if (mcast_debug_level > 0) \ 323 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 324 } while (0) 325 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 326 #define ipoib_dbg(priv, format, arg...) \ 327 do { (void) (priv); } while (0) 328 #define ipoib_dbg_mcast(priv, format, arg...) \ 329 do { (void) (priv); } while (0) 330 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 331 332 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 333 #define ipoib_dbg_data(priv, format, arg...) \ 334 do { \ 335 if (data_debug_level > 0) \ 336 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 337 } while (0) 338 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 339 #define ipoib_dbg_data(priv, format, arg...) \ 340 do { (void) (priv); } while (0) 341 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 342 343 344 #define IPOIB_GID_FMT "%x:%x:%x:%x:%x:%x:%x:%x" 345 346 #define IPOIB_GID_ARG(gid) be16_to_cpup((__be16 *) ((gid).raw + 0)), \ 347 be16_to_cpup((__be16 *) ((gid).raw + 2)), \ 348 be16_to_cpup((__be16 *) ((gid).raw + 4)), \ 349 be16_to_cpup((__be16 *) ((gid).raw + 6)), \ 350 be16_to_cpup((__be16 *) ((gid).raw + 8)), \ 351 be16_to_cpup((__be16 *) ((gid).raw + 10)), \ 352 be16_to_cpup((__be16 *) ((gid).raw + 12)), \ 353 be16_to_cpup((__be16 *) ((gid).raw + 14)) 354 355 #endif /* _IPOIB_H */ 356