ipoib.h revision 95ed644fd12f53c6fc778f3f246974e5fe3a9468
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#include <linux/mutex.h> 49 50#include <net/neighbour.h> 51 52#include <asm/atomic.h> 53 54#include <rdma/ib_verbs.h> 55#include <rdma/ib_pack.h> 56#include <rdma/ib_sa.h> 57 58/* constants */ 59 60enum { 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 92struct ipoib_header { 93 __be16 proto; 94 u16 reserved; 95}; 96 97struct ipoib_pseudoheader { 98 u8 hwaddr[INFINIBAND_ALEN]; 99}; 100 101struct ipoib_mcast; 102 103struct ipoib_rx_buf { 104 struct sk_buff *skb; 105 dma_addr_t mapping; 106}; 107 108struct ipoib_tx_buf { 109 struct sk_buff *skb; 110 DECLARE_PCI_UNMAP_ADDR(mapping) 111}; 112 113/* 114 * Device private locking: tx_lock protects members used in TX fast 115 * path (and we use LLTX so upper layers don't do extra locking). 116 * lock protects everything else. lock nests inside of tx_lock (ie 117 * tx_lock must be acquired first if needed). 118 */ 119struct ipoib_dev_priv { 120 spinlock_t lock; 121 122 struct net_device *dev; 123 124 unsigned long flags; 125 126 struct mutex mcast_mutex; 127 struct mutex vlan_mutex; 128 129 struct rb_root path_tree; 130 struct list_head path_list; 131 132 struct ipoib_mcast *broadcast; 133 struct list_head multicast_list; 134 struct rb_root multicast_tree; 135 136 struct work_struct pkey_task; 137 struct work_struct mcast_task; 138 struct work_struct flush_task; 139 struct work_struct restart_task; 140 struct work_struct ah_reap_task; 141 142 struct ib_device *ca; 143 u8 port; 144 u16 pkey; 145 struct ib_pd *pd; 146 struct ib_mr *mr; 147 struct ib_cq *cq; 148 struct ib_qp *qp; 149 u32 qkey; 150 151 union ib_gid local_gid; 152 u16 local_lid; 153 u8 local_rate; 154 155 unsigned int admin_mtu; 156 unsigned int mcast_mtu; 157 158 struct ipoib_rx_buf *rx_ring; 159 160 spinlock_t tx_lock; 161 struct ipoib_tx_buf *tx_ring; 162 unsigned tx_head; 163 unsigned tx_tail; 164 struct ib_sge tx_sge; 165 struct ib_send_wr tx_wr; 166 167 struct ib_wc ibwc[IPOIB_NUM_WC]; 168 169 struct list_head dead_ahs; 170 171 struct ib_event_handler event_handler; 172 173 struct net_device_stats stats; 174 175 struct net_device *parent; 176 struct list_head child_intfs; 177 struct list_head list; 178 179#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 180 struct list_head fs_list; 181 struct dentry *mcg_dentry; 182 struct dentry *path_dentry; 183#endif 184}; 185 186struct ipoib_ah { 187 struct net_device *dev; 188 struct ib_ah *ah; 189 struct list_head list; 190 struct kref ref; 191 unsigned last_send; 192}; 193 194struct ipoib_path { 195 struct net_device *dev; 196 struct ib_sa_path_rec pathrec; 197 struct ipoib_ah *ah; 198 struct sk_buff_head queue; 199 200 struct list_head neigh_list; 201 202 int query_id; 203 struct ib_sa_query *query; 204 struct completion done; 205 206 struct rb_node rb_node; 207 struct list_head list; 208}; 209 210struct ipoib_neigh { 211 struct ipoib_ah *ah; 212 struct sk_buff_head queue; 213 214 struct neighbour *neighbour; 215 216 struct list_head list; 217}; 218 219static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh) 220{ 221 return (struct ipoib_neigh **) (neigh->ha + 24 - 222 (offsetof(struct neighbour, ha) & 4)); 223} 224 225extern struct workqueue_struct *ipoib_workqueue; 226 227/* functions */ 228 229void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 230 231struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 232 struct ib_pd *pd, struct ib_ah_attr *attr); 233void ipoib_free_ah(struct kref *kref); 234static inline void ipoib_put_ah(struct ipoib_ah *ah) 235{ 236 kref_put(&ah->ref, ipoib_free_ah); 237} 238 239int ipoib_open(struct net_device *dev); 240int ipoib_add_pkey_attr(struct net_device *dev); 241 242void ipoib_send(struct net_device *dev, struct sk_buff *skb, 243 struct ipoib_ah *address, u32 qpn); 244void ipoib_reap_ah(void *dev_ptr); 245 246void ipoib_flush_paths(struct net_device *dev); 247struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); 248 249int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 250void ipoib_ib_dev_flush(void *dev); 251void ipoib_ib_dev_cleanup(struct net_device *dev); 252 253int ipoib_ib_dev_open(struct net_device *dev); 254int ipoib_ib_dev_up(struct net_device *dev); 255int ipoib_ib_dev_down(struct net_device *dev); 256int ipoib_ib_dev_stop(struct net_device *dev); 257 258int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 259void ipoib_dev_cleanup(struct net_device *dev); 260 261void ipoib_mcast_join_task(void *dev_ptr); 262void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid, 263 struct sk_buff *skb); 264 265void ipoib_mcast_restart_task(void *dev_ptr); 266int ipoib_mcast_start_thread(struct net_device *dev); 267int ipoib_mcast_stop_thread(struct net_device *dev, int flush); 268 269void ipoib_mcast_dev_down(struct net_device *dev); 270void ipoib_mcast_dev_flush(struct net_device *dev); 271 272#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 273struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 274int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 275void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 276 union ib_gid *gid, 277 unsigned long *created, 278 unsigned int *queuelen, 279 unsigned int *complete, 280 unsigned int *send_only); 281 282struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 283int ipoib_path_iter_next(struct ipoib_path_iter *iter); 284void ipoib_path_iter_read(struct ipoib_path_iter *iter, 285 struct ipoib_path *path); 286#endif 287 288int ipoib_mcast_attach(struct net_device *dev, u16 mlid, 289 union ib_gid *mgid); 290int ipoib_mcast_detach(struct net_device *dev, u16 mlid, 291 union ib_gid *mgid); 292 293int ipoib_init_qp(struct net_device *dev); 294int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 295void ipoib_transport_dev_cleanup(struct net_device *dev); 296 297void ipoib_event(struct ib_event_handler *handler, 298 struct ib_event *record); 299 300int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 301int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 302 303void ipoib_pkey_poll(void *dev); 304int ipoib_pkey_dev_delay_open(struct net_device *dev); 305 306#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 307void ipoib_create_debug_files(struct net_device *dev); 308void ipoib_delete_debug_files(struct net_device *dev); 309int ipoib_register_debugfs(void); 310void ipoib_unregister_debugfs(void); 311#else 312static inline void ipoib_create_debug_files(struct net_device *dev) { } 313static inline void ipoib_delete_debug_files(struct net_device *dev) { } 314static inline int ipoib_register_debugfs(void) { return 0; } 315static inline void ipoib_unregister_debugfs(void) { } 316#endif 317 318 319#define ipoib_printk(level, priv, format, arg...) \ 320 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 321#define ipoib_warn(priv, format, arg...) \ 322 ipoib_printk(KERN_WARNING, priv, format , ## arg) 323 324 325#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 326extern int ipoib_debug_level; 327 328#define ipoib_dbg(priv, format, arg...) \ 329 do { \ 330 if (ipoib_debug_level > 0) \ 331 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 332 } while (0) 333#define ipoib_dbg_mcast(priv, format, arg...) \ 334 do { \ 335 if (mcast_debug_level > 0) \ 336 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 337 } while (0) 338#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 339#define ipoib_dbg(priv, format, arg...) \ 340 do { (void) (priv); } while (0) 341#define ipoib_dbg_mcast(priv, format, arg...) \ 342 do { (void) (priv); } while (0) 343#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 344 345#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 346#define ipoib_dbg_data(priv, format, arg...) \ 347 do { \ 348 if (data_debug_level > 0) \ 349 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 350 } while (0) 351#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 352#define ipoib_dbg_data(priv, format, arg...) \ 353 do { (void) (priv); } while (0) 354#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 355 356 357#define IPOIB_GID_FMT "%x:%x:%x:%x:%x:%x:%x:%x" 358 359#define IPOIB_GID_ARG(gid) be16_to_cpup((__be16 *) ((gid).raw + 0)), \ 360 be16_to_cpup((__be16 *) ((gid).raw + 2)), \ 361 be16_to_cpup((__be16 *) ((gid).raw + 4)), \ 362 be16_to_cpup((__be16 *) ((gid).raw + 6)), \ 363 be16_to_cpup((__be16 *) ((gid).raw + 8)), \ 364 be16_to_cpup((__be16 *) ((gid).raw + 10)), \ 365 be16_to_cpup((__be16 *) ((gid).raw + 12)), \ 366 be16_to_cpup((__be16 *) ((gid).raw + 14)) 367 368#endif /* _IPOIB_H */ 369