Karthikeyan Ramasubramanian | 5c568fb | 2013-01-10 17:09:13 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved. |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #define DEBUG |
| 14 | |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/string.h> |
| 19 | #include <linux/errno.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/types.h> |
| 22 | #include <linux/delay.h> |
| 23 | #include <linux/err.h> |
| 24 | #include <linux/sched.h> |
| 25 | #include <linux/poll.h> |
| 26 | #include <linux/wakelock.h> |
| 27 | #include <linux/platform_device.h> |
| 28 | #include <linux/uaccess.h> |
| 29 | #include <linux/debugfs.h> |
| 30 | |
| 31 | #include <asm/uaccess.h> |
| 32 | #include <asm/byteorder.h> |
| 33 | |
| 34 | #include <mach/smem_log.h> |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 35 | #include <mach/subsystem_notif.h> |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 36 | #include <mach/msm_ipc_router.h> |
Karthikeyan Ramasubramanian | 2bfe8ec | 2013-03-22 10:47:20 -0600 | [diff] [blame] | 37 | #include <mach/msm_ipc_logging.h> |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 38 | |
| 39 | #include "ipc_router.h" |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 40 | #include "modem_notifier.h" |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 41 | #include "msm_ipc_router_security.h" |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 42 | |
| 43 | enum { |
| 44 | SMEM_LOG = 1U << 0, |
| 45 | RTR_DBG = 1U << 1, |
| 46 | R2R_MSG = 1U << 2, |
| 47 | R2R_RAW = 1U << 3, |
| 48 | NTFY_MSG = 1U << 4, |
| 49 | R2R_RAW_HDR = 1U << 5, |
| 50 | }; |
| 51 | |
| 52 | static int msm_ipc_router_debug_mask; |
| 53 | module_param_named(debug_mask, msm_ipc_router_debug_mask, |
| 54 | int, S_IRUGO | S_IWUSR | S_IWGRP); |
| 55 | |
Karthikeyan Ramasubramanian | 2bfe8ec | 2013-03-22 10:47:20 -0600 | [diff] [blame] | 56 | static void *ipc_rtr_log_ctxt; |
| 57 | #define IPC_RTR_LOG_PAGES 5 |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 58 | #define DIAG(x...) pr_info("[RR] ERROR " x) |
| 59 | |
| 60 | #if defined(DEBUG) |
| 61 | #define D(x...) do { \ |
Karthikeyan Ramasubramanian | 2bfe8ec | 2013-03-22 10:47:20 -0600 | [diff] [blame] | 62 | if (ipc_rtr_log_ctxt) \ |
| 63 | ipc_log_string(ipc_rtr_log_ctxt, x); \ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 64 | if (msm_ipc_router_debug_mask & RTR_DBG) \ |
| 65 | pr_info(x); \ |
| 66 | } while (0) |
| 67 | |
| 68 | #define RR(x...) do { \ |
Karthikeyan Ramasubramanian | 2bfe8ec | 2013-03-22 10:47:20 -0600 | [diff] [blame] | 69 | if (ipc_rtr_log_ctxt) \ |
| 70 | ipc_log_string(ipc_rtr_log_ctxt, x); \ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 71 | if (msm_ipc_router_debug_mask & R2R_MSG) \ |
| 72 | pr_info("[RR] "x); \ |
| 73 | } while (0) |
| 74 | |
| 75 | #define RAW(x...) do { \ |
| 76 | if (msm_ipc_router_debug_mask & R2R_RAW) \ |
| 77 | pr_info("[RAW] "x); \ |
| 78 | } while (0) |
| 79 | |
| 80 | #define NTFY(x...) do { \ |
| 81 | if (msm_ipc_router_debug_mask & NTFY_MSG) \ |
| 82 | pr_info("[NOTIFY] "x); \ |
| 83 | } while (0) |
| 84 | |
| 85 | #define RAW_HDR(x...) do { \ |
| 86 | if (msm_ipc_router_debug_mask & R2R_RAW_HDR) \ |
| 87 | pr_info("[HDR] "x); \ |
| 88 | } while (0) |
| 89 | #else |
| 90 | #define D(x...) do { } while (0) |
| 91 | #define RR(x...) do { } while (0) |
| 92 | #define RAW(x...) do { } while (0) |
| 93 | #define RAW_HDR(x...) do { } while (0) |
| 94 | #define NTFY(x...) do { } while (0) |
| 95 | #endif |
| 96 | |
| 97 | #define IPC_ROUTER_LOG_EVENT_ERROR 0x10 |
| 98 | #define IPC_ROUTER_LOG_EVENT_TX 0x11 |
| 99 | #define IPC_ROUTER_LOG_EVENT_RX 0x12 |
| 100 | |
| 101 | static LIST_HEAD(control_ports); |
| 102 | static DEFINE_MUTEX(control_ports_lock); |
| 103 | |
| 104 | #define LP_HASH_SIZE 32 |
| 105 | static struct list_head local_ports[LP_HASH_SIZE]; |
| 106 | static DEFINE_MUTEX(local_ports_lock); |
| 107 | |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 108 | /* |
| 109 | * Server info is organized as a hash table. The server's service ID is |
| 110 | * used to index into the hash table. The instance ID of most of the servers |
| 111 | * are 1 or 2. The service IDs are well distributed compared to the instance |
| 112 | * IDs and hence choosing service ID to index into this hash table optimizes |
| 113 | * the hash table operations like add, lookup, destroy. |
| 114 | */ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 115 | #define SRV_HASH_SIZE 32 |
| 116 | static struct list_head server_list[SRV_HASH_SIZE]; |
| 117 | static DEFINE_MUTEX(server_list_lock); |
| 118 | static wait_queue_head_t newserver_wait; |
| 119 | |
| 120 | struct msm_ipc_server { |
| 121 | struct list_head list; |
| 122 | struct msm_ipc_port_name name; |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 123 | char pdev_name[32]; |
| 124 | int next_pdev_id; |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 125 | int synced_sec_rule; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 126 | struct list_head server_port_list; |
| 127 | }; |
| 128 | |
| 129 | struct msm_ipc_server_port { |
| 130 | struct list_head list; |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 131 | struct platform_device pdev; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 132 | struct msm_ipc_port_addr server_addr; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 133 | struct msm_ipc_router_xprt_info *xprt_info; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 134 | }; |
| 135 | |
| 136 | #define RP_HASH_SIZE 32 |
| 137 | struct msm_ipc_router_remote_port { |
| 138 | struct list_head list; |
| 139 | uint32_t node_id; |
| 140 | uint32_t port_id; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 141 | uint32_t restart_state; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 142 | wait_queue_head_t quota_wait; |
| 143 | uint32_t tx_quota_cnt; |
| 144 | struct mutex quota_lock; |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 145 | void *sec_rule; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 146 | }; |
| 147 | |
| 148 | struct msm_ipc_router_xprt_info { |
| 149 | struct list_head list; |
| 150 | struct msm_ipc_router_xprt *xprt; |
| 151 | uint32_t remote_node_id; |
| 152 | uint32_t initialized; |
| 153 | struct list_head pkt_list; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 154 | struct wake_lock wakelock; |
| 155 | struct mutex rx_lock; |
| 156 | struct mutex tx_lock; |
| 157 | uint32_t need_len; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 158 | uint32_t abort_data_read; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 159 | struct work_struct read_data; |
| 160 | struct workqueue_struct *workqueue; |
| 161 | }; |
| 162 | |
| 163 | #define RT_HASH_SIZE 4 |
| 164 | struct msm_ipc_routing_table_entry { |
| 165 | struct list_head list; |
| 166 | uint32_t node_id; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 167 | uint32_t neighbor_node_id; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 168 | struct list_head remote_port_list[RP_HASH_SIZE]; |
| 169 | struct msm_ipc_router_xprt_info *xprt_info; |
| 170 | struct mutex lock; |
| 171 | unsigned long num_tx_bytes; |
| 172 | unsigned long num_rx_bytes; |
| 173 | }; |
| 174 | |
| 175 | static struct list_head routing_table[RT_HASH_SIZE]; |
| 176 | static DEFINE_MUTEX(routing_table_lock); |
| 177 | static int routing_table_inited; |
| 178 | |
| 179 | static LIST_HEAD(msm_ipc_board_dev_list); |
| 180 | static DEFINE_MUTEX(msm_ipc_board_dev_list_lock); |
| 181 | |
| 182 | static void do_read_data(struct work_struct *work); |
| 183 | |
| 184 | #define RR_STATE_IDLE 0 |
| 185 | #define RR_STATE_HEADER 1 |
| 186 | #define RR_STATE_BODY 2 |
| 187 | #define RR_STATE_ERROR 3 |
| 188 | |
| 189 | #define RESTART_NORMAL 0 |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 190 | #define RESTART_PEND 1 |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 191 | |
| 192 | /* State for remote ep following restart */ |
| 193 | #define RESTART_QUOTA_ABORT 1 |
| 194 | |
| 195 | static LIST_HEAD(xprt_info_list); |
| 196 | static DEFINE_MUTEX(xprt_info_list_lock); |
| 197 | |
Karthikeyan Ramasubramanian | 4af9f7c | 2011-09-30 15:55:18 -0600 | [diff] [blame] | 198 | static DECLARE_COMPLETION(msm_ipc_local_router_up); |
| 199 | #define IPC_ROUTER_INIT_TIMEOUT (10 * HZ) |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 200 | |
| 201 | static uint32_t next_port_id; |
| 202 | static DEFINE_MUTEX(next_port_id_lock); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 203 | static atomic_t pending_close_count = ATOMIC_INIT(0); |
| 204 | static wait_queue_head_t subsystem_restart_wait; |
| 205 | static struct workqueue_struct *msm_ipc_router_workqueue; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 206 | |
| 207 | enum { |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 208 | DOWN, |
| 209 | UP, |
| 210 | }; |
| 211 | |
| 212 | static void init_routing_table(void) |
| 213 | { |
| 214 | int i; |
| 215 | for (i = 0; i < RT_HASH_SIZE; i++) |
| 216 | INIT_LIST_HEAD(&routing_table[i]); |
| 217 | } |
| 218 | |
| 219 | static struct msm_ipc_routing_table_entry *alloc_routing_table_entry( |
| 220 | uint32_t node_id) |
| 221 | { |
| 222 | int i; |
| 223 | struct msm_ipc_routing_table_entry *rt_entry; |
| 224 | |
| 225 | rt_entry = kmalloc(sizeof(struct msm_ipc_routing_table_entry), |
| 226 | GFP_KERNEL); |
| 227 | if (!rt_entry) { |
| 228 | pr_err("%s: rt_entry allocation failed for %d\n", |
| 229 | __func__, node_id); |
| 230 | return NULL; |
| 231 | } |
| 232 | |
| 233 | for (i = 0; i < RP_HASH_SIZE; i++) |
| 234 | INIT_LIST_HEAD(&rt_entry->remote_port_list[i]); |
| 235 | |
| 236 | mutex_init(&rt_entry->lock); |
| 237 | rt_entry->node_id = node_id; |
| 238 | rt_entry->xprt_info = NULL; |
| 239 | return rt_entry; |
| 240 | } |
| 241 | |
| 242 | /*Please take routing_table_lock before calling this function*/ |
| 243 | static int add_routing_table_entry( |
| 244 | struct msm_ipc_routing_table_entry *rt_entry) |
| 245 | { |
| 246 | uint32_t key; |
| 247 | |
| 248 | if (!rt_entry) |
| 249 | return -EINVAL; |
| 250 | |
| 251 | key = (rt_entry->node_id % RT_HASH_SIZE); |
| 252 | list_add_tail(&rt_entry->list, &routing_table[key]); |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | /*Please take routing_table_lock before calling this function*/ |
| 257 | static struct msm_ipc_routing_table_entry *lookup_routing_table( |
| 258 | uint32_t node_id) |
| 259 | { |
| 260 | uint32_t key = (node_id % RT_HASH_SIZE); |
| 261 | struct msm_ipc_routing_table_entry *rt_entry; |
| 262 | |
| 263 | list_for_each_entry(rt_entry, &routing_table[key], list) { |
| 264 | if (rt_entry->node_id == node_id) |
| 265 | return rt_entry; |
| 266 | } |
| 267 | return NULL; |
| 268 | } |
| 269 | |
| 270 | struct rr_packet *rr_read(struct msm_ipc_router_xprt_info *xprt_info) |
| 271 | { |
| 272 | struct rr_packet *temp_pkt; |
| 273 | |
| 274 | if (!xprt_info) |
| 275 | return NULL; |
| 276 | |
| 277 | mutex_lock(&xprt_info->rx_lock); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 278 | if (xprt_info->abort_data_read) { |
| 279 | mutex_unlock(&xprt_info->rx_lock); |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 280 | pr_err("%s detected SSR & exiting now\n", |
| 281 | xprt_info->xprt->name); |
| 282 | return NULL; |
| 283 | } |
| 284 | |
| 285 | if (list_empty(&xprt_info->pkt_list)) { |
| 286 | mutex_unlock(&xprt_info->rx_lock); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 287 | return NULL; |
| 288 | } |
| 289 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 290 | temp_pkt = list_first_entry(&xprt_info->pkt_list, |
| 291 | struct rr_packet, list); |
| 292 | list_del(&temp_pkt->list); |
| 293 | if (list_empty(&xprt_info->pkt_list)) |
| 294 | wake_unlock(&xprt_info->wakelock); |
| 295 | mutex_unlock(&xprt_info->rx_lock); |
| 296 | return temp_pkt; |
| 297 | } |
| 298 | |
| 299 | struct rr_packet *clone_pkt(struct rr_packet *pkt) |
| 300 | { |
| 301 | struct rr_packet *cloned_pkt; |
| 302 | struct sk_buff *temp_skb, *cloned_skb; |
| 303 | struct sk_buff_head *pkt_fragment_q; |
| 304 | |
| 305 | cloned_pkt = kzalloc(sizeof(struct rr_packet), GFP_KERNEL); |
| 306 | if (!cloned_pkt) { |
| 307 | pr_err("%s: failure\n", __func__); |
| 308 | return NULL; |
| 309 | } |
| 310 | |
| 311 | pkt_fragment_q = kmalloc(sizeof(struct sk_buff_head), GFP_KERNEL); |
| 312 | if (!pkt_fragment_q) { |
| 313 | pr_err("%s: pkt_frag_q alloc failure\n", __func__); |
| 314 | kfree(cloned_pkt); |
| 315 | return NULL; |
| 316 | } |
| 317 | skb_queue_head_init(pkt_fragment_q); |
| 318 | |
| 319 | skb_queue_walk(pkt->pkt_fragment_q, temp_skb) { |
| 320 | cloned_skb = skb_clone(temp_skb, GFP_KERNEL); |
| 321 | if (!cloned_skb) |
| 322 | goto fail_clone; |
| 323 | skb_queue_tail(pkt_fragment_q, cloned_skb); |
| 324 | } |
| 325 | cloned_pkt->pkt_fragment_q = pkt_fragment_q; |
| 326 | cloned_pkt->length = pkt->length; |
| 327 | return cloned_pkt; |
| 328 | |
| 329 | fail_clone: |
| 330 | while (!skb_queue_empty(pkt_fragment_q)) { |
| 331 | temp_skb = skb_dequeue(pkt_fragment_q); |
| 332 | kfree_skb(temp_skb); |
| 333 | } |
| 334 | kfree(pkt_fragment_q); |
| 335 | kfree(cloned_pkt); |
| 336 | return NULL; |
| 337 | } |
| 338 | |
| 339 | struct rr_packet *create_pkt(struct sk_buff_head *data) |
| 340 | { |
| 341 | struct rr_packet *pkt; |
| 342 | struct sk_buff *temp_skb; |
| 343 | |
| 344 | pkt = kzalloc(sizeof(struct rr_packet), GFP_KERNEL); |
| 345 | if (!pkt) { |
| 346 | pr_err("%s: failure\n", __func__); |
| 347 | return NULL; |
| 348 | } |
| 349 | |
| 350 | pkt->pkt_fragment_q = data; |
| 351 | skb_queue_walk(pkt->pkt_fragment_q, temp_skb) |
| 352 | pkt->length += temp_skb->len; |
| 353 | return pkt; |
| 354 | } |
| 355 | |
| 356 | void release_pkt(struct rr_packet *pkt) |
| 357 | { |
| 358 | struct sk_buff *temp_skb; |
| 359 | |
| 360 | if (!pkt) |
| 361 | return; |
| 362 | |
| 363 | if (!pkt->pkt_fragment_q) { |
| 364 | kfree(pkt); |
| 365 | return; |
| 366 | } |
| 367 | |
| 368 | while (!skb_queue_empty(pkt->pkt_fragment_q)) { |
| 369 | temp_skb = skb_dequeue(pkt->pkt_fragment_q); |
| 370 | kfree_skb(temp_skb); |
| 371 | } |
| 372 | kfree(pkt->pkt_fragment_q); |
| 373 | kfree(pkt); |
| 374 | return; |
| 375 | } |
| 376 | |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 377 | static struct sk_buff_head *msm_ipc_router_buf_to_skb(void *buf, |
| 378 | unsigned int buf_len) |
| 379 | { |
| 380 | struct sk_buff_head *skb_head; |
| 381 | struct sk_buff *skb; |
| 382 | int first = 1, offset = 0; |
| 383 | int skb_size, data_size; |
| 384 | void *data; |
| 385 | |
| 386 | skb_head = kmalloc(sizeof(struct sk_buff_head), GFP_KERNEL); |
| 387 | if (!skb_head) { |
| 388 | pr_err("%s: Couldnot allocate skb_head\n", __func__); |
| 389 | return NULL; |
| 390 | } |
| 391 | skb_queue_head_init(skb_head); |
| 392 | |
| 393 | data_size = buf_len; |
| 394 | while (offset != buf_len) { |
| 395 | skb_size = data_size; |
| 396 | if (first) |
| 397 | skb_size += IPC_ROUTER_HDR_SIZE; |
| 398 | |
| 399 | skb = alloc_skb(skb_size, GFP_KERNEL); |
| 400 | if (!skb) { |
| 401 | if (skb_size <= (PAGE_SIZE/2)) { |
| 402 | pr_err("%s: cannot allocate skb\n", __func__); |
| 403 | goto buf_to_skb_error; |
| 404 | } |
| 405 | data_size = data_size / 2; |
| 406 | continue; |
| 407 | } |
| 408 | |
| 409 | if (first) { |
| 410 | skb_reserve(skb, IPC_ROUTER_HDR_SIZE); |
| 411 | first = 0; |
| 412 | } |
| 413 | |
| 414 | data = skb_put(skb, data_size); |
| 415 | memcpy(skb->data, buf + offset, data_size); |
| 416 | skb_queue_tail(skb_head, skb); |
| 417 | offset += data_size; |
| 418 | data_size = buf_len - offset; |
| 419 | } |
| 420 | return skb_head; |
| 421 | |
| 422 | buf_to_skb_error: |
| 423 | while (!skb_queue_empty(skb_head)) { |
| 424 | skb = skb_dequeue(skb_head); |
| 425 | kfree_skb(skb); |
| 426 | } |
| 427 | kfree(skb_head); |
| 428 | return NULL; |
| 429 | } |
| 430 | |
| 431 | static void *msm_ipc_router_skb_to_buf(struct sk_buff_head *skb_head, |
| 432 | unsigned int len) |
| 433 | { |
| 434 | struct sk_buff *temp; |
| 435 | int offset = 0, buf_len = 0, copy_len; |
| 436 | void *buf; |
| 437 | |
| 438 | if (!skb_head) { |
| 439 | pr_err("%s: NULL skb_head\n", __func__); |
| 440 | return NULL; |
| 441 | } |
| 442 | |
| 443 | temp = skb_peek(skb_head); |
| 444 | buf_len = len; |
| 445 | buf = kmalloc(buf_len, GFP_KERNEL); |
| 446 | if (!buf) { |
| 447 | pr_err("%s: cannot allocate buf\n", __func__); |
| 448 | return NULL; |
| 449 | } |
| 450 | skb_queue_walk(skb_head, temp) { |
| 451 | copy_len = buf_len < temp->len ? buf_len : temp->len; |
| 452 | memcpy(buf + offset, temp->data, copy_len); |
| 453 | offset += copy_len; |
| 454 | buf_len -= copy_len; |
| 455 | } |
| 456 | return buf; |
| 457 | } |
| 458 | |
| 459 | static void msm_ipc_router_free_skb(struct sk_buff_head *skb_head) |
| 460 | { |
| 461 | struct sk_buff *temp_skb; |
| 462 | |
| 463 | if (!skb_head) |
| 464 | return; |
| 465 | |
| 466 | while (!skb_queue_empty(skb_head)) { |
| 467 | temp_skb = skb_dequeue(skb_head); |
| 468 | kfree_skb(temp_skb); |
| 469 | } |
| 470 | kfree(skb_head); |
| 471 | } |
| 472 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 473 | static int post_control_ports(struct rr_packet *pkt) |
| 474 | { |
| 475 | struct msm_ipc_port *port_ptr; |
| 476 | struct rr_packet *cloned_pkt; |
| 477 | |
| 478 | if (!pkt) |
| 479 | return -EINVAL; |
| 480 | |
| 481 | mutex_lock(&control_ports_lock); |
| 482 | list_for_each_entry(port_ptr, &control_ports, list) { |
| 483 | mutex_lock(&port_ptr->port_rx_q_lock); |
| 484 | cloned_pkt = clone_pkt(pkt); |
| 485 | wake_lock(&port_ptr->port_rx_wake_lock); |
| 486 | list_add_tail(&cloned_pkt->list, &port_ptr->port_rx_q); |
| 487 | wake_up(&port_ptr->port_rx_wait_q); |
| 488 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 489 | } |
| 490 | mutex_unlock(&control_ports_lock); |
| 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | static uint32_t allocate_port_id(void) |
| 495 | { |
| 496 | uint32_t port_id = 0, prev_port_id, key; |
| 497 | struct msm_ipc_port *port_ptr; |
| 498 | |
| 499 | mutex_lock(&next_port_id_lock); |
| 500 | prev_port_id = next_port_id; |
| 501 | mutex_lock(&local_ports_lock); |
| 502 | do { |
| 503 | next_port_id++; |
| 504 | if ((next_port_id & 0xFFFFFFFE) == 0xFFFFFFFE) |
| 505 | next_port_id = 1; |
| 506 | |
| 507 | key = (next_port_id & (LP_HASH_SIZE - 1)); |
| 508 | if (list_empty(&local_ports[key])) { |
| 509 | port_id = next_port_id; |
| 510 | break; |
| 511 | } |
| 512 | list_for_each_entry(port_ptr, &local_ports[key], list) { |
| 513 | if (port_ptr->this_port.port_id == next_port_id) { |
| 514 | port_id = next_port_id; |
| 515 | break; |
| 516 | } |
| 517 | } |
| 518 | if (!port_id) { |
| 519 | port_id = next_port_id; |
| 520 | break; |
| 521 | } |
| 522 | port_id = 0; |
| 523 | } while (next_port_id != prev_port_id); |
| 524 | mutex_unlock(&local_ports_lock); |
| 525 | mutex_unlock(&next_port_id_lock); |
| 526 | |
| 527 | return port_id; |
| 528 | } |
| 529 | |
| 530 | void msm_ipc_router_add_local_port(struct msm_ipc_port *port_ptr) |
| 531 | { |
| 532 | uint32_t key; |
| 533 | |
| 534 | if (!port_ptr) |
| 535 | return; |
| 536 | |
| 537 | key = (port_ptr->this_port.port_id & (LP_HASH_SIZE - 1)); |
| 538 | mutex_lock(&local_ports_lock); |
| 539 | list_add_tail(&port_ptr->list, &local_ports[key]); |
| 540 | mutex_unlock(&local_ports_lock); |
| 541 | } |
| 542 | |
| 543 | struct msm_ipc_port *msm_ipc_router_create_raw_port(void *endpoint, |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 544 | void (*notify)(unsigned event, void *priv), |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 545 | void *priv) |
| 546 | { |
| 547 | struct msm_ipc_port *port_ptr; |
| 548 | |
| 549 | port_ptr = kzalloc(sizeof(struct msm_ipc_port), GFP_KERNEL); |
| 550 | if (!port_ptr) |
| 551 | return NULL; |
| 552 | |
| 553 | port_ptr->this_port.node_id = IPC_ROUTER_NID_LOCAL; |
| 554 | port_ptr->this_port.port_id = allocate_port_id(); |
| 555 | if (!port_ptr->this_port.port_id) { |
| 556 | pr_err("%s: All port ids are in use\n", __func__); |
| 557 | kfree(port_ptr); |
| 558 | return NULL; |
| 559 | } |
| 560 | |
| 561 | spin_lock_init(&port_ptr->port_lock); |
| 562 | INIT_LIST_HEAD(&port_ptr->incomplete); |
| 563 | mutex_init(&port_ptr->incomplete_lock); |
| 564 | INIT_LIST_HEAD(&port_ptr->port_rx_q); |
| 565 | mutex_init(&port_ptr->port_rx_q_lock); |
| 566 | init_waitqueue_head(&port_ptr->port_rx_wait_q); |
Karthikeyan Ramasubramanian | b4aeeb9 | 2012-03-13 12:31:43 -0600 | [diff] [blame] | 567 | snprintf(port_ptr->rx_wakelock_name, MAX_WAKELOCK_NAME_SZ, |
Karthikeyan Ramasubramanian | 6396bdd | 2013-02-14 13:53:20 -0700 | [diff] [blame] | 568 | "ipc%08x_%s", |
| 569 | port_ptr->this_port.port_id, |
| 570 | current->comm); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 571 | wake_lock_init(&port_ptr->port_rx_wake_lock, |
Karthikeyan Ramasubramanian | b4aeeb9 | 2012-03-13 12:31:43 -0600 | [diff] [blame] | 572 | WAKE_LOCK_SUSPEND, port_ptr->rx_wakelock_name); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 573 | |
| 574 | port_ptr->endpoint = endpoint; |
| 575 | port_ptr->notify = notify; |
| 576 | port_ptr->priv = priv; |
| 577 | |
| 578 | msm_ipc_router_add_local_port(port_ptr); |
| 579 | return port_ptr; |
| 580 | } |
| 581 | |
Karthikeyan Ramasubramanian | be9954b | 2012-06-13 12:59:54 -0600 | [diff] [blame] | 582 | /* |
| 583 | * Should be called with local_ports_lock locked |
| 584 | */ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 585 | static struct msm_ipc_port *msm_ipc_router_lookup_local_port(uint32_t port_id) |
| 586 | { |
| 587 | int key = (port_id & (LP_HASH_SIZE - 1)); |
| 588 | struct msm_ipc_port *port_ptr; |
| 589 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 590 | list_for_each_entry(port_ptr, &local_ports[key], list) { |
| 591 | if (port_ptr->this_port.port_id == port_id) { |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 592 | return port_ptr; |
| 593 | } |
| 594 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 595 | return NULL; |
| 596 | } |
| 597 | |
| 598 | static struct msm_ipc_router_remote_port *msm_ipc_router_lookup_remote_port( |
| 599 | uint32_t node_id, |
| 600 | uint32_t port_id) |
| 601 | { |
| 602 | struct msm_ipc_router_remote_port *rport_ptr; |
| 603 | struct msm_ipc_routing_table_entry *rt_entry; |
| 604 | int key = (port_id & (RP_HASH_SIZE - 1)); |
| 605 | |
| 606 | mutex_lock(&routing_table_lock); |
| 607 | rt_entry = lookup_routing_table(node_id); |
| 608 | if (!rt_entry) { |
| 609 | mutex_unlock(&routing_table_lock); |
| 610 | pr_err("%s: Node is not up\n", __func__); |
| 611 | return NULL; |
| 612 | } |
| 613 | |
| 614 | mutex_lock(&rt_entry->lock); |
| 615 | list_for_each_entry(rport_ptr, |
| 616 | &rt_entry->remote_port_list[key], list) { |
| 617 | if (rport_ptr->port_id == port_id) { |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 618 | if (rport_ptr->restart_state != RESTART_NORMAL) |
| 619 | rport_ptr = NULL; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 620 | mutex_unlock(&rt_entry->lock); |
| 621 | mutex_unlock(&routing_table_lock); |
| 622 | return rport_ptr; |
| 623 | } |
| 624 | } |
| 625 | mutex_unlock(&rt_entry->lock); |
| 626 | mutex_unlock(&routing_table_lock); |
| 627 | return NULL; |
| 628 | } |
| 629 | |
| 630 | static struct msm_ipc_router_remote_port *msm_ipc_router_create_remote_port( |
| 631 | uint32_t node_id, |
| 632 | uint32_t port_id) |
| 633 | { |
| 634 | struct msm_ipc_router_remote_port *rport_ptr; |
| 635 | struct msm_ipc_routing_table_entry *rt_entry; |
| 636 | int key = (port_id & (RP_HASH_SIZE - 1)); |
| 637 | |
| 638 | mutex_lock(&routing_table_lock); |
| 639 | rt_entry = lookup_routing_table(node_id); |
| 640 | if (!rt_entry) { |
| 641 | mutex_unlock(&routing_table_lock); |
| 642 | pr_err("%s: Node is not up\n", __func__); |
| 643 | return NULL; |
| 644 | } |
| 645 | |
| 646 | mutex_lock(&rt_entry->lock); |
| 647 | rport_ptr = kmalloc(sizeof(struct msm_ipc_router_remote_port), |
| 648 | GFP_KERNEL); |
| 649 | if (!rport_ptr) { |
| 650 | mutex_unlock(&rt_entry->lock); |
| 651 | mutex_unlock(&routing_table_lock); |
| 652 | pr_err("%s: Remote port alloc failed\n", __func__); |
| 653 | return NULL; |
| 654 | } |
| 655 | rport_ptr->port_id = port_id; |
| 656 | rport_ptr->node_id = node_id; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 657 | rport_ptr->restart_state = RESTART_NORMAL; |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 658 | rport_ptr->sec_rule = NULL; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 659 | rport_ptr->tx_quota_cnt = 0; |
| 660 | init_waitqueue_head(&rport_ptr->quota_wait); |
| 661 | mutex_init(&rport_ptr->quota_lock); |
| 662 | list_add_tail(&rport_ptr->list, |
| 663 | &rt_entry->remote_port_list[key]); |
| 664 | mutex_unlock(&rt_entry->lock); |
| 665 | mutex_unlock(&routing_table_lock); |
| 666 | return rport_ptr; |
| 667 | } |
| 668 | |
| 669 | static void msm_ipc_router_destroy_remote_port( |
| 670 | struct msm_ipc_router_remote_port *rport_ptr) |
| 671 | { |
| 672 | uint32_t node_id; |
| 673 | struct msm_ipc_routing_table_entry *rt_entry; |
| 674 | |
| 675 | if (!rport_ptr) |
| 676 | return; |
| 677 | |
| 678 | node_id = rport_ptr->node_id; |
| 679 | mutex_lock(&routing_table_lock); |
| 680 | rt_entry = lookup_routing_table(node_id); |
| 681 | if (!rt_entry) { |
| 682 | mutex_unlock(&routing_table_lock); |
| 683 | pr_err("%s: Node %d is not up\n", __func__, node_id); |
| 684 | return; |
| 685 | } |
| 686 | |
| 687 | mutex_lock(&rt_entry->lock); |
| 688 | list_del(&rport_ptr->list); |
| 689 | kfree(rport_ptr); |
| 690 | mutex_unlock(&rt_entry->lock); |
| 691 | mutex_unlock(&routing_table_lock); |
| 692 | return; |
| 693 | } |
| 694 | |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 695 | /** |
| 696 | * msm_ipc_router_lookup_server() - Lookup server information |
| 697 | * @service: Service ID of the server info to be looked up. |
| 698 | * @instance: Instance ID of the server info to be looked up. |
| 699 | * @node_id: Node/Processor ID in which the server is hosted. |
| 700 | * @port_id: Port ID within the node in which the server is hosted. |
| 701 | * |
| 702 | * @return: If found Pointer to server structure, else NULL. |
| 703 | * |
| 704 | * Note1: Lock the server_list_lock before accessing this function. |
| 705 | * Note2: If the <node_id:port_id> are <0:0>, then the lookup is restricted |
| 706 | * to <service:instance>. Used only when a client wants to send a |
| 707 | * message to any QMI server. |
| 708 | */ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 709 | static struct msm_ipc_server *msm_ipc_router_lookup_server( |
| 710 | uint32_t service, |
| 711 | uint32_t instance, |
| 712 | uint32_t node_id, |
| 713 | uint32_t port_id) |
| 714 | { |
| 715 | struct msm_ipc_server *server; |
| 716 | struct msm_ipc_server_port *server_port; |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 717 | int key = (service & (SRV_HASH_SIZE - 1)); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 718 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 719 | list_for_each_entry(server, &server_list[key], list) { |
| 720 | if ((server->name.service != service) || |
| 721 | (server->name.instance != instance)) |
| 722 | continue; |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 723 | if ((node_id == 0) && (port_id == 0)) |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 724 | return server; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 725 | list_for_each_entry(server_port, &server->server_port_list, |
| 726 | list) { |
| 727 | if ((server_port->server_addr.node_id == node_id) && |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 728 | (server_port->server_addr.port_id == port_id)) |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 729 | return server; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 730 | } |
| 731 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 732 | return NULL; |
| 733 | } |
| 734 | |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 735 | static void dummy_release(struct device *dev) |
| 736 | { |
| 737 | } |
| 738 | |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 739 | /** |
| 740 | * msm_ipc_router_create_server() - Add server info to hash table |
| 741 | * @service: Service ID of the server info to be created. |
| 742 | * @instance: Instance ID of the server info to be created. |
| 743 | * @node_id: Node/Processor ID in which the server is hosted. |
| 744 | * @port_id: Port ID within the node in which the server is hosted. |
| 745 | * @xprt_info: XPRT through which the node hosting the server is reached. |
| 746 | * |
| 747 | * @return: Pointer to server structure on success, else NULL. |
| 748 | * |
| 749 | * This function adds the server info to the hash table. If the same |
| 750 | * server(i.e. <service_id:instance_id>) is hosted in different nodes, |
| 751 | * they are maintained as list of "server_port" under "server" structure. |
| 752 | * Note: Lock the server_list_lock before accessing this function. |
| 753 | */ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 754 | static struct msm_ipc_server *msm_ipc_router_create_server( |
| 755 | uint32_t service, |
| 756 | uint32_t instance, |
| 757 | uint32_t node_id, |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 758 | uint32_t port_id, |
| 759 | struct msm_ipc_router_xprt_info *xprt_info) |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 760 | { |
| 761 | struct msm_ipc_server *server = NULL; |
| 762 | struct msm_ipc_server_port *server_port; |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 763 | int key = (service & (SRV_HASH_SIZE - 1)); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 764 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 765 | list_for_each_entry(server, &server_list[key], list) { |
| 766 | if ((server->name.service == service) && |
| 767 | (server->name.instance == instance)) |
| 768 | goto create_srv_port; |
| 769 | } |
| 770 | |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 771 | server = kzalloc(sizeof(struct msm_ipc_server), GFP_KERNEL); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 772 | if (!server) { |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 773 | pr_err("%s: Server allocation failed\n", __func__); |
| 774 | return NULL; |
| 775 | } |
| 776 | server->name.service = service; |
| 777 | server->name.instance = instance; |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 778 | server->synced_sec_rule = 0; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 779 | INIT_LIST_HEAD(&server->server_port_list); |
| 780 | list_add_tail(&server->list, &server_list[key]); |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 781 | scnprintf(server->pdev_name, sizeof(server->pdev_name), |
| 782 | "QMI%08x:%08x", service, instance); |
| 783 | server->next_pdev_id = 1; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 784 | |
| 785 | create_srv_port: |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 786 | server_port = kzalloc(sizeof(struct msm_ipc_server_port), GFP_KERNEL); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 787 | if (!server_port) { |
| 788 | if (list_empty(&server->server_port_list)) { |
| 789 | list_del(&server->list); |
| 790 | kfree(server); |
| 791 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 792 | pr_err("%s: Server Port allocation failed\n", __func__); |
| 793 | return NULL; |
| 794 | } |
| 795 | server_port->server_addr.node_id = node_id; |
| 796 | server_port->server_addr.port_id = port_id; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 797 | server_port->xprt_info = xprt_info; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 798 | list_add_tail(&server_port->list, &server->server_port_list); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 799 | |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 800 | server_port->pdev.name = server->pdev_name; |
| 801 | server_port->pdev.id = server->next_pdev_id++; |
| 802 | server_port->pdev.dev.release = dummy_release; |
| 803 | platform_device_register(&server_port->pdev); |
| 804 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 805 | return server; |
| 806 | } |
| 807 | |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 808 | /** |
| 809 | * msm_ipc_router_destroy_server() - Remove server info from hash table |
| 810 | * @server: Server info to be removed. |
| 811 | * @node_id: Node/Processor ID in which the server is hosted. |
| 812 | * @port_id: Port ID within the node in which the server is hosted. |
| 813 | * |
| 814 | * This function removes the server_port identified using <node_id:port_id> |
| 815 | * from the server structure. If the server_port list under server structure |
| 816 | * is empty after removal, then remove the server structure from the server |
| 817 | * hash table. |
| 818 | * Note: Lock the server_list_lock before accessing this function. |
| 819 | */ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 820 | static void msm_ipc_router_destroy_server(struct msm_ipc_server *server, |
| 821 | uint32_t node_id, uint32_t port_id) |
| 822 | { |
| 823 | struct msm_ipc_server_port *server_port; |
| 824 | |
| 825 | if (!server) |
| 826 | return; |
| 827 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 828 | list_for_each_entry(server_port, &server->server_port_list, list) { |
| 829 | if ((server_port->server_addr.node_id == node_id) && |
| 830 | (server_port->server_addr.port_id == port_id)) |
| 831 | break; |
| 832 | } |
| 833 | if (server_port) { |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 834 | platform_device_unregister(&server_port->pdev); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 835 | list_del(&server_port->list); |
| 836 | kfree(server_port); |
| 837 | } |
| 838 | if (list_empty(&server->server_port_list)) { |
| 839 | list_del(&server->list); |
| 840 | kfree(server); |
| 841 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 842 | return; |
| 843 | } |
| 844 | |
| 845 | static int msm_ipc_router_send_control_msg( |
| 846 | struct msm_ipc_router_xprt_info *xprt_info, |
| 847 | union rr_control_msg *msg) |
| 848 | { |
| 849 | struct rr_packet *pkt; |
| 850 | struct sk_buff *ipc_rtr_pkt; |
| 851 | struct rr_header *hdr; |
| 852 | int pkt_size; |
| 853 | void *data; |
| 854 | struct sk_buff_head *pkt_fragment_q; |
| 855 | int ret; |
| 856 | |
| 857 | if (!xprt_info || ((msg->cmd != IPC_ROUTER_CTRL_CMD_HELLO) && |
| 858 | !xprt_info->initialized)) { |
| 859 | pr_err("%s: xprt_info not initialized\n", __func__); |
| 860 | return -EINVAL; |
| 861 | } |
| 862 | |
| 863 | if (xprt_info->remote_node_id == IPC_ROUTER_NID_LOCAL) |
| 864 | return 0; |
| 865 | |
| 866 | pkt = kzalloc(sizeof(struct rr_packet), GFP_KERNEL); |
| 867 | if (!pkt) { |
| 868 | pr_err("%s: pkt alloc failed\n", __func__); |
| 869 | return -ENOMEM; |
| 870 | } |
| 871 | |
| 872 | pkt_fragment_q = kmalloc(sizeof(struct sk_buff_head), GFP_KERNEL); |
| 873 | if (!pkt_fragment_q) { |
| 874 | pr_err("%s: pkt_fragment_q alloc failed\n", __func__); |
| 875 | kfree(pkt); |
| 876 | return -ENOMEM; |
| 877 | } |
| 878 | skb_queue_head_init(pkt_fragment_q); |
| 879 | |
| 880 | pkt_size = IPC_ROUTER_HDR_SIZE + sizeof(*msg); |
| 881 | ipc_rtr_pkt = alloc_skb(pkt_size, GFP_KERNEL); |
| 882 | if (!ipc_rtr_pkt) { |
| 883 | pr_err("%s: ipc_rtr_pkt alloc failed\n", __func__); |
| 884 | kfree(pkt_fragment_q); |
| 885 | kfree(pkt); |
| 886 | return -ENOMEM; |
| 887 | } |
| 888 | |
| 889 | skb_reserve(ipc_rtr_pkt, IPC_ROUTER_HDR_SIZE); |
| 890 | data = skb_put(ipc_rtr_pkt, sizeof(*msg)); |
| 891 | memcpy(data, msg, sizeof(*msg)); |
| 892 | hdr = (struct rr_header *)skb_push(ipc_rtr_pkt, IPC_ROUTER_HDR_SIZE); |
| 893 | if (!hdr) { |
| 894 | pr_err("%s: skb_push failed\n", __func__); |
| 895 | kfree_skb(ipc_rtr_pkt); |
| 896 | kfree(pkt_fragment_q); |
| 897 | kfree(pkt); |
| 898 | return -ENOMEM; |
| 899 | } |
| 900 | |
| 901 | hdr->version = IPC_ROUTER_VERSION; |
| 902 | hdr->type = msg->cmd; |
| 903 | hdr->src_node_id = IPC_ROUTER_NID_LOCAL; |
| 904 | hdr->src_port_id = IPC_ROUTER_ADDRESS; |
| 905 | hdr->confirm_rx = 0; |
| 906 | hdr->size = sizeof(*msg); |
| 907 | hdr->dst_node_id = xprt_info->remote_node_id; |
| 908 | hdr->dst_port_id = IPC_ROUTER_ADDRESS; |
| 909 | skb_queue_tail(pkt_fragment_q, ipc_rtr_pkt); |
| 910 | pkt->pkt_fragment_q = pkt_fragment_q; |
| 911 | pkt->length = pkt_size; |
| 912 | |
| 913 | mutex_lock(&xprt_info->tx_lock); |
Karthikeyan Ramasubramanian | 8cec592 | 2012-02-16 17:41:58 -0700 | [diff] [blame] | 914 | ret = xprt_info->xprt->write(pkt, pkt_size, xprt_info->xprt); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 915 | mutex_unlock(&xprt_info->tx_lock); |
| 916 | |
| 917 | release_pkt(pkt); |
| 918 | return ret; |
| 919 | } |
| 920 | |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 921 | static int msm_ipc_router_send_server_list(uint32_t node_id, |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 922 | struct msm_ipc_router_xprt_info *xprt_info) |
| 923 | { |
| 924 | union rr_control_msg ctl; |
| 925 | struct msm_ipc_server *server; |
| 926 | struct msm_ipc_server_port *server_port; |
| 927 | int i; |
| 928 | |
| 929 | if (!xprt_info || !xprt_info->initialized) { |
| 930 | pr_err("%s: Xprt info not initialized\n", __func__); |
| 931 | return -EINVAL; |
| 932 | } |
| 933 | |
| 934 | ctl.cmd = IPC_ROUTER_CTRL_CMD_NEW_SERVER; |
| 935 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 936 | for (i = 0; i < SRV_HASH_SIZE; i++) { |
| 937 | list_for_each_entry(server, &server_list[i], list) { |
| 938 | ctl.srv.service = server->name.service; |
| 939 | ctl.srv.instance = server->name.instance; |
| 940 | list_for_each_entry(server_port, |
| 941 | &server->server_port_list, list) { |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 942 | if (server_port->server_addr.node_id != |
| 943 | node_id) |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 944 | continue; |
| 945 | |
| 946 | ctl.srv.node_id = |
| 947 | server_port->server_addr.node_id; |
| 948 | ctl.srv.port_id = |
| 949 | server_port->server_addr.port_id; |
| 950 | msm_ipc_router_send_control_msg(xprt_info, |
| 951 | &ctl); |
| 952 | } |
| 953 | } |
| 954 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 955 | |
| 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | #if defined(DEBUG) |
| 960 | static char *type_to_str(int i) |
| 961 | { |
| 962 | switch (i) { |
| 963 | case IPC_ROUTER_CTRL_CMD_DATA: |
| 964 | return "data "; |
| 965 | case IPC_ROUTER_CTRL_CMD_HELLO: |
| 966 | return "hello "; |
| 967 | case IPC_ROUTER_CTRL_CMD_BYE: |
| 968 | return "bye "; |
| 969 | case IPC_ROUTER_CTRL_CMD_NEW_SERVER: |
| 970 | return "new_srvr"; |
| 971 | case IPC_ROUTER_CTRL_CMD_REMOVE_SERVER: |
| 972 | return "rmv_srvr"; |
| 973 | case IPC_ROUTER_CTRL_CMD_REMOVE_CLIENT: |
| 974 | return "rmv_clnt"; |
| 975 | case IPC_ROUTER_CTRL_CMD_RESUME_TX: |
| 976 | return "resum_tx"; |
| 977 | case IPC_ROUTER_CTRL_CMD_EXIT: |
| 978 | return "cmd_exit"; |
| 979 | default: |
| 980 | return "invalid"; |
| 981 | } |
| 982 | } |
| 983 | #endif |
| 984 | |
| 985 | static int broadcast_ctl_msg_locally(union rr_control_msg *msg) |
| 986 | { |
| 987 | struct rr_packet *pkt; |
| 988 | struct sk_buff *ipc_rtr_pkt; |
| 989 | struct rr_header *hdr; |
| 990 | int pkt_size; |
| 991 | void *data; |
| 992 | struct sk_buff_head *pkt_fragment_q; |
| 993 | int ret; |
| 994 | |
| 995 | pkt = kzalloc(sizeof(struct rr_packet), GFP_KERNEL); |
| 996 | if (!pkt) { |
| 997 | pr_err("%s: pkt alloc failed\n", __func__); |
| 998 | return -ENOMEM; |
| 999 | } |
| 1000 | |
| 1001 | pkt_fragment_q = kmalloc(sizeof(struct sk_buff_head), GFP_KERNEL); |
| 1002 | if (!pkt_fragment_q) { |
| 1003 | pr_err("%s: pkt_fragment_q alloc failed\n", __func__); |
| 1004 | kfree(pkt); |
| 1005 | return -ENOMEM; |
| 1006 | } |
| 1007 | skb_queue_head_init(pkt_fragment_q); |
| 1008 | |
| 1009 | pkt_size = IPC_ROUTER_HDR_SIZE + sizeof(*msg); |
| 1010 | ipc_rtr_pkt = alloc_skb(pkt_size, GFP_KERNEL); |
| 1011 | if (!ipc_rtr_pkt) { |
| 1012 | pr_err("%s: ipc_rtr_pkt alloc failed\n", __func__); |
| 1013 | kfree(pkt_fragment_q); |
| 1014 | kfree(pkt); |
| 1015 | return -ENOMEM; |
| 1016 | } |
| 1017 | |
| 1018 | skb_reserve(ipc_rtr_pkt, IPC_ROUTER_HDR_SIZE); |
| 1019 | data = skb_put(ipc_rtr_pkt, sizeof(*msg)); |
| 1020 | memcpy(data, msg, sizeof(*msg)); |
| 1021 | hdr = (struct rr_header *)skb_push(ipc_rtr_pkt, IPC_ROUTER_HDR_SIZE); |
| 1022 | if (!hdr) { |
| 1023 | pr_err("%s: skb_push failed\n", __func__); |
| 1024 | kfree_skb(ipc_rtr_pkt); |
| 1025 | kfree(pkt_fragment_q); |
| 1026 | kfree(pkt); |
| 1027 | return -ENOMEM; |
| 1028 | } |
| 1029 | hdr->version = IPC_ROUTER_VERSION; |
| 1030 | hdr->type = msg->cmd; |
| 1031 | hdr->src_node_id = IPC_ROUTER_NID_LOCAL; |
| 1032 | hdr->src_port_id = IPC_ROUTER_ADDRESS; |
| 1033 | hdr->confirm_rx = 0; |
| 1034 | hdr->size = sizeof(*msg); |
| 1035 | hdr->dst_node_id = IPC_ROUTER_NID_LOCAL; |
| 1036 | hdr->dst_port_id = IPC_ROUTER_ADDRESS; |
| 1037 | skb_queue_tail(pkt_fragment_q, ipc_rtr_pkt); |
| 1038 | pkt->pkt_fragment_q = pkt_fragment_q; |
| 1039 | pkt->length = pkt_size; |
| 1040 | |
| 1041 | ret = post_control_ports(pkt); |
| 1042 | release_pkt(pkt); |
| 1043 | return ret; |
| 1044 | } |
| 1045 | |
| 1046 | static int broadcast_ctl_msg(union rr_control_msg *ctl) |
| 1047 | { |
| 1048 | struct msm_ipc_router_xprt_info *xprt_info; |
| 1049 | |
| 1050 | mutex_lock(&xprt_info_list_lock); |
| 1051 | list_for_each_entry(xprt_info, &xprt_info_list, list) { |
| 1052 | msm_ipc_router_send_control_msg(xprt_info, ctl); |
| 1053 | } |
| 1054 | mutex_unlock(&xprt_info_list_lock); |
| 1055 | |
| 1056 | return 0; |
| 1057 | } |
| 1058 | |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1059 | static int relay_ctl_msg(struct msm_ipc_router_xprt_info *xprt_info, |
| 1060 | union rr_control_msg *ctl) |
| 1061 | { |
| 1062 | struct msm_ipc_router_xprt_info *fwd_xprt_info; |
| 1063 | |
| 1064 | if (!xprt_info || !ctl) |
| 1065 | return -EINVAL; |
| 1066 | |
| 1067 | mutex_lock(&xprt_info_list_lock); |
| 1068 | list_for_each_entry(fwd_xprt_info, &xprt_info_list, list) { |
| 1069 | if (xprt_info->xprt->link_id != fwd_xprt_info->xprt->link_id) |
| 1070 | msm_ipc_router_send_control_msg(fwd_xprt_info, ctl); |
| 1071 | } |
| 1072 | mutex_unlock(&xprt_info_list_lock); |
| 1073 | |
| 1074 | return 0; |
| 1075 | } |
| 1076 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1077 | static int relay_msg(struct msm_ipc_router_xprt_info *xprt_info, |
| 1078 | struct rr_packet *pkt) |
| 1079 | { |
| 1080 | struct msm_ipc_router_xprt_info *fwd_xprt_info; |
| 1081 | |
| 1082 | if (!xprt_info || !pkt) |
| 1083 | return -EINVAL; |
| 1084 | |
| 1085 | mutex_lock(&xprt_info_list_lock); |
| 1086 | list_for_each_entry(fwd_xprt_info, &xprt_info_list, list) { |
| 1087 | mutex_lock(&fwd_xprt_info->tx_lock); |
| 1088 | if (xprt_info->xprt->link_id != fwd_xprt_info->xprt->link_id) |
Karthikeyan Ramasubramanian | 8cec592 | 2012-02-16 17:41:58 -0700 | [diff] [blame] | 1089 | fwd_xprt_info->xprt->write(pkt, pkt->length, |
| 1090 | fwd_xprt_info->xprt); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1091 | mutex_unlock(&fwd_xprt_info->tx_lock); |
| 1092 | } |
| 1093 | mutex_unlock(&xprt_info_list_lock); |
| 1094 | return 0; |
| 1095 | } |
| 1096 | |
| 1097 | static int forward_msg(struct msm_ipc_router_xprt_info *xprt_info, |
| 1098 | struct rr_packet *pkt) |
| 1099 | { |
| 1100 | uint32_t dst_node_id; |
| 1101 | struct sk_buff *head_pkt; |
| 1102 | struct rr_header *hdr; |
| 1103 | struct msm_ipc_router_xprt_info *fwd_xprt_info; |
| 1104 | struct msm_ipc_routing_table_entry *rt_entry; |
| 1105 | |
| 1106 | if (!xprt_info || !pkt) |
| 1107 | return -EINVAL; |
| 1108 | |
| 1109 | head_pkt = skb_peek(pkt->pkt_fragment_q); |
| 1110 | if (!head_pkt) |
| 1111 | return -EINVAL; |
| 1112 | |
| 1113 | hdr = (struct rr_header *)head_pkt->data; |
| 1114 | dst_node_id = hdr->dst_node_id; |
| 1115 | mutex_lock(&routing_table_lock); |
| 1116 | rt_entry = lookup_routing_table(dst_node_id); |
| 1117 | if (!(rt_entry) || !(rt_entry->xprt_info)) { |
| 1118 | mutex_unlock(&routing_table_lock); |
| 1119 | pr_err("%s: Routing table not initialized\n", __func__); |
| 1120 | return -ENODEV; |
| 1121 | } |
| 1122 | |
| 1123 | mutex_lock(&rt_entry->lock); |
| 1124 | fwd_xprt_info = rt_entry->xprt_info; |
| 1125 | mutex_lock(&fwd_xprt_info->tx_lock); |
| 1126 | if (xprt_info->remote_node_id == fwd_xprt_info->remote_node_id) { |
| 1127 | mutex_unlock(&fwd_xprt_info->tx_lock); |
| 1128 | mutex_unlock(&rt_entry->lock); |
| 1129 | mutex_unlock(&routing_table_lock); |
| 1130 | pr_err("%s: Discarding Command to route back\n", __func__); |
| 1131 | return -EINVAL; |
| 1132 | } |
| 1133 | |
| 1134 | if (xprt_info->xprt->link_id == fwd_xprt_info->xprt->link_id) { |
| 1135 | mutex_unlock(&fwd_xprt_info->tx_lock); |
| 1136 | mutex_unlock(&rt_entry->lock); |
| 1137 | mutex_unlock(&routing_table_lock); |
| 1138 | pr_err("%s: DST in the same cluster\n", __func__); |
| 1139 | return 0; |
| 1140 | } |
Karthikeyan Ramasubramanian | 8cec592 | 2012-02-16 17:41:58 -0700 | [diff] [blame] | 1141 | fwd_xprt_info->xprt->write(pkt, pkt->length, fwd_xprt_info->xprt); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1142 | mutex_unlock(&fwd_xprt_info->tx_lock); |
| 1143 | mutex_unlock(&rt_entry->lock); |
| 1144 | mutex_unlock(&routing_table_lock); |
| 1145 | |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1149 | static void reset_remote_port_info(uint32_t node_id, uint32_t port_id) |
| 1150 | { |
| 1151 | struct msm_ipc_router_remote_port *rport_ptr; |
| 1152 | |
| 1153 | rport_ptr = msm_ipc_router_lookup_remote_port(node_id, port_id); |
| 1154 | if (!rport_ptr) { |
| 1155 | pr_err("%s: No such remote port %08x:%08x\n", |
| 1156 | __func__, node_id, port_id); |
| 1157 | return; |
| 1158 | } |
| 1159 | mutex_lock(&rport_ptr->quota_lock); |
| 1160 | rport_ptr->restart_state = RESTART_PEND; |
| 1161 | wake_up(&rport_ptr->quota_wait); |
| 1162 | mutex_unlock(&rport_ptr->quota_lock); |
| 1163 | return; |
| 1164 | } |
| 1165 | |
| 1166 | static void msm_ipc_cleanup_remote_server_info( |
| 1167 | struct msm_ipc_router_xprt_info *xprt_info) |
| 1168 | { |
| 1169 | struct msm_ipc_server *svr, *tmp_svr; |
| 1170 | struct msm_ipc_server_port *svr_port, *tmp_svr_port; |
| 1171 | int i; |
| 1172 | union rr_control_msg ctl; |
| 1173 | |
| 1174 | if (!xprt_info) { |
| 1175 | pr_err("%s: Invalid xprt_info\n", __func__); |
| 1176 | return; |
| 1177 | } |
| 1178 | |
| 1179 | ctl.cmd = IPC_ROUTER_CTRL_CMD_REMOVE_SERVER; |
| 1180 | mutex_lock(&server_list_lock); |
| 1181 | for (i = 0; i < SRV_HASH_SIZE; i++) { |
| 1182 | list_for_each_entry_safe(svr, tmp_svr, &server_list[i], list) { |
| 1183 | ctl.srv.service = svr->name.service; |
| 1184 | ctl.srv.instance = svr->name.instance; |
| 1185 | list_for_each_entry_safe(svr_port, tmp_svr_port, |
| 1186 | &svr->server_port_list, list) { |
| 1187 | if (svr_port->xprt_info != xprt_info) |
| 1188 | continue; |
| 1189 | D("Remove server %08x:%08x - %08x:%08x", |
| 1190 | ctl.srv.service, ctl.srv.instance, |
| 1191 | svr_port->server_addr.node_id, |
| 1192 | svr_port->server_addr.port_id); |
| 1193 | reset_remote_port_info( |
| 1194 | svr_port->server_addr.node_id, |
| 1195 | svr_port->server_addr.port_id); |
| 1196 | ctl.srv.node_id = svr_port->server_addr.node_id; |
| 1197 | ctl.srv.port_id = svr_port->server_addr.port_id; |
| 1198 | relay_ctl_msg(xprt_info, &ctl); |
| 1199 | broadcast_ctl_msg_locally(&ctl); |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 1200 | platform_device_unregister(&svr_port->pdev); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1201 | list_del(&svr_port->list); |
| 1202 | kfree(svr_port); |
| 1203 | } |
| 1204 | if (list_empty(&svr->server_port_list)) { |
| 1205 | list_del(&svr->list); |
| 1206 | kfree(svr); |
| 1207 | } |
| 1208 | } |
| 1209 | } |
| 1210 | mutex_unlock(&server_list_lock); |
| 1211 | } |
| 1212 | |
| 1213 | static void msm_ipc_cleanup_remote_client_info( |
| 1214 | struct msm_ipc_router_xprt_info *xprt_info) |
| 1215 | { |
| 1216 | struct msm_ipc_routing_table_entry *rt_entry; |
| 1217 | struct msm_ipc_router_remote_port *rport_ptr; |
| 1218 | int i, j; |
| 1219 | union rr_control_msg ctl; |
| 1220 | |
| 1221 | if (!xprt_info) { |
| 1222 | pr_err("%s: Invalid xprt_info\n", __func__); |
| 1223 | return; |
| 1224 | } |
| 1225 | |
| 1226 | ctl.cmd = IPC_ROUTER_CTRL_CMD_REMOVE_CLIENT; |
| 1227 | mutex_lock(&routing_table_lock); |
| 1228 | for (i = 0; i < RT_HASH_SIZE; i++) { |
| 1229 | list_for_each_entry(rt_entry, &routing_table[i], list) { |
| 1230 | mutex_lock(&rt_entry->lock); |
| 1231 | if (rt_entry->xprt_info != xprt_info) { |
| 1232 | mutex_unlock(&rt_entry->lock); |
| 1233 | continue; |
| 1234 | } |
| 1235 | for (j = 0; j < RP_HASH_SIZE; j++) { |
| 1236 | list_for_each_entry(rport_ptr, |
| 1237 | &rt_entry->remote_port_list[j], list) { |
| 1238 | if (rport_ptr->restart_state == |
| 1239 | RESTART_PEND) |
| 1240 | continue; |
| 1241 | mutex_lock(&rport_ptr->quota_lock); |
| 1242 | rport_ptr->restart_state = RESTART_PEND; |
| 1243 | wake_up(&rport_ptr->quota_wait); |
| 1244 | mutex_unlock(&rport_ptr->quota_lock); |
| 1245 | ctl.cli.node_id = rport_ptr->node_id; |
| 1246 | ctl.cli.port_id = rport_ptr->port_id; |
| 1247 | broadcast_ctl_msg_locally(&ctl); |
| 1248 | } |
| 1249 | } |
| 1250 | mutex_unlock(&rt_entry->lock); |
| 1251 | } |
| 1252 | } |
| 1253 | mutex_unlock(&routing_table_lock); |
| 1254 | } |
| 1255 | |
| 1256 | static void msm_ipc_cleanup_remote_port_info(uint32_t node_id) |
| 1257 | { |
| 1258 | struct msm_ipc_routing_table_entry *rt_entry, *tmp_rt_entry; |
| 1259 | struct msm_ipc_router_remote_port *rport_ptr, *tmp_rport_ptr; |
| 1260 | int i, j; |
| 1261 | |
| 1262 | mutex_lock(&routing_table_lock); |
| 1263 | for (i = 0; i < RT_HASH_SIZE; i++) { |
| 1264 | list_for_each_entry_safe(rt_entry, tmp_rt_entry, |
| 1265 | &routing_table[i], list) { |
| 1266 | mutex_lock(&rt_entry->lock); |
| 1267 | if (rt_entry->neighbor_node_id != node_id) { |
| 1268 | mutex_unlock(&rt_entry->lock); |
| 1269 | continue; |
| 1270 | } |
| 1271 | for (j = 0; j < RP_HASH_SIZE; j++) { |
| 1272 | list_for_each_entry_safe(rport_ptr, |
| 1273 | tmp_rport_ptr, |
| 1274 | &rt_entry->remote_port_list[j], list) { |
| 1275 | list_del(&rport_ptr->list); |
| 1276 | kfree(rport_ptr); |
| 1277 | } |
| 1278 | } |
| 1279 | mutex_unlock(&rt_entry->lock); |
| 1280 | } |
| 1281 | } |
| 1282 | mutex_unlock(&routing_table_lock); |
| 1283 | } |
| 1284 | |
| 1285 | static void msm_ipc_cleanup_routing_table( |
| 1286 | struct msm_ipc_router_xprt_info *xprt_info) |
| 1287 | { |
| 1288 | int i; |
| 1289 | struct msm_ipc_routing_table_entry *rt_entry; |
| 1290 | |
| 1291 | if (!xprt_info) { |
| 1292 | pr_err("%s: Invalid xprt_info\n", __func__); |
| 1293 | return; |
| 1294 | } |
| 1295 | |
| 1296 | mutex_lock(&routing_table_lock); |
| 1297 | for (i = 0; i < RT_HASH_SIZE; i++) { |
| 1298 | list_for_each_entry(rt_entry, &routing_table[i], list) { |
| 1299 | mutex_lock(&rt_entry->lock); |
| 1300 | if (rt_entry->xprt_info == xprt_info) |
| 1301 | rt_entry->xprt_info = NULL; |
| 1302 | mutex_unlock(&rt_entry->lock); |
| 1303 | } |
| 1304 | } |
| 1305 | mutex_unlock(&routing_table_lock); |
| 1306 | } |
| 1307 | |
| 1308 | static void modem_reset_cleanup(struct msm_ipc_router_xprt_info *xprt_info) |
| 1309 | { |
| 1310 | |
| 1311 | if (!xprt_info) { |
| 1312 | pr_err("%s: Invalid xprt_info\n", __func__); |
| 1313 | return; |
| 1314 | } |
| 1315 | |
| 1316 | msm_ipc_cleanup_remote_server_info(xprt_info); |
| 1317 | msm_ipc_cleanup_remote_client_info(xprt_info); |
| 1318 | msm_ipc_cleanup_routing_table(xprt_info); |
| 1319 | } |
| 1320 | |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 1321 | /** |
| 1322 | * sync_sec_rule() - Synchrnoize the security rule into the server structure |
| 1323 | * @server: Server structure where the rule has to be synchronized. |
| 1324 | * @rule: Security tule to be synchronized. |
| 1325 | * |
| 1326 | * This function is used to update the server structure with the security |
| 1327 | * rule configured for the <service:instance> corresponding to that server. |
| 1328 | */ |
| 1329 | static void sync_sec_rule(struct msm_ipc_server *server, void *rule) |
| 1330 | { |
| 1331 | struct msm_ipc_server_port *server_port; |
| 1332 | struct msm_ipc_router_remote_port *rport_ptr = NULL; |
| 1333 | |
| 1334 | list_for_each_entry(server_port, &server->server_port_list, list) { |
| 1335 | rport_ptr = msm_ipc_router_lookup_remote_port( |
| 1336 | server_port->server_addr.node_id, |
| 1337 | server_port->server_addr.port_id); |
| 1338 | if (!rport_ptr) |
| 1339 | continue; |
| 1340 | rport_ptr->sec_rule = rule; |
| 1341 | } |
| 1342 | server->synced_sec_rule = 1; |
| 1343 | } |
| 1344 | |
| 1345 | /** |
| 1346 | * msm_ipc_sync_sec_rule() - Sync the security rule to the service |
| 1347 | * @service: Service for which the rule has to be synchronized. |
| 1348 | * @instance: Instance for which the rule has to be synchronized. |
| 1349 | * @rule: Security rule to be synchronized. |
| 1350 | * |
| 1351 | * This function is used to syncrhonize the security rule with the server |
| 1352 | * hash table, if the user-space script configures the rule after the service |
| 1353 | * has come up. This function is used to synchronize the security rule to a |
| 1354 | * specific service and optionally a specific instance. |
| 1355 | */ |
| 1356 | void msm_ipc_sync_sec_rule(uint32_t service, uint32_t instance, void *rule) |
| 1357 | { |
| 1358 | int key = (service & (SRV_HASH_SIZE - 1)); |
| 1359 | struct msm_ipc_server *server; |
| 1360 | |
| 1361 | mutex_lock(&server_list_lock); |
| 1362 | list_for_each_entry(server, &server_list[key], list) { |
| 1363 | if (server->name.service != service) |
| 1364 | continue; |
| 1365 | |
| 1366 | if (server->name.instance != instance && |
| 1367 | instance != ALL_INSTANCE) |
| 1368 | continue; |
| 1369 | |
| 1370 | /* |
| 1371 | * If the rule applies to all instances and if the specific |
| 1372 | * instance of a service has a rule synchronized already, |
| 1373 | * do not apply the rule for that specific instance. |
| 1374 | */ |
| 1375 | if (instance == ALL_INSTANCE && server->synced_sec_rule) |
| 1376 | continue; |
| 1377 | |
| 1378 | sync_sec_rule(server, rule); |
| 1379 | } |
| 1380 | mutex_unlock(&server_list_lock); |
| 1381 | } |
| 1382 | |
| 1383 | /** |
| 1384 | * msm_ipc_sync_default_sec_rule() - Default security rule to all services |
| 1385 | * @rule: Security rule to be synchronized. |
| 1386 | * |
| 1387 | * This function is used to syncrhonize the security rule with the server |
| 1388 | * hash table, if the user-space script configures the rule after the service |
| 1389 | * has come up. This function is used to synchronize the security rule that |
| 1390 | * applies to all services, if the concerned service do not have any rule |
| 1391 | * defined. |
| 1392 | */ |
| 1393 | void msm_ipc_sync_default_sec_rule(void *rule) |
| 1394 | { |
| 1395 | int key; |
| 1396 | struct msm_ipc_server *server; |
| 1397 | |
| 1398 | mutex_lock(&server_list_lock); |
| 1399 | for (key = 0; key < SRV_HASH_SIZE; key++) { |
| 1400 | list_for_each_entry(server, &server_list[key], list) { |
| 1401 | if (server->synced_sec_rule) |
| 1402 | continue; |
| 1403 | |
| 1404 | sync_sec_rule(server, rule); |
| 1405 | } |
| 1406 | } |
| 1407 | mutex_unlock(&server_list_lock); |
| 1408 | } |
| 1409 | |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 1410 | static int process_hello_msg(struct msm_ipc_router_xprt_info *xprt_info, |
| 1411 | struct rr_header *hdr) |
| 1412 | { |
| 1413 | int i, rc = 0; |
| 1414 | union rr_control_msg ctl; |
| 1415 | struct msm_ipc_routing_table_entry *rt_entry; |
| 1416 | |
| 1417 | if (!hdr) |
| 1418 | return -EINVAL; |
| 1419 | |
| 1420 | RR("o HELLO NID %d\n", hdr->src_node_id); |
| 1421 | |
| 1422 | xprt_info->remote_node_id = hdr->src_node_id; |
| 1423 | /* |
| 1424 | * Find the entry from Routing Table corresponding to Node ID. |
| 1425 | * Under SSR, an entry will be found. When the system boots up |
| 1426 | * for the 1st time, an entry will not be found and hence allocate |
| 1427 | * an entry. Update the entry with the Node ID that it corresponds |
| 1428 | * to and the XPRT through which it can be reached. |
| 1429 | */ |
| 1430 | mutex_lock(&routing_table_lock); |
| 1431 | rt_entry = lookup_routing_table(hdr->src_node_id); |
| 1432 | if (!rt_entry) { |
| 1433 | rt_entry = alloc_routing_table_entry(hdr->src_node_id); |
| 1434 | if (!rt_entry) { |
| 1435 | mutex_unlock(&routing_table_lock); |
| 1436 | pr_err("%s: rt_entry allocation failed\n", __func__); |
| 1437 | return -ENOMEM; |
| 1438 | } |
| 1439 | add_routing_table_entry(rt_entry); |
| 1440 | } |
| 1441 | mutex_lock(&rt_entry->lock); |
| 1442 | rt_entry->neighbor_node_id = xprt_info->remote_node_id; |
| 1443 | rt_entry->xprt_info = xprt_info; |
| 1444 | mutex_unlock(&rt_entry->lock); |
| 1445 | mutex_unlock(&routing_table_lock); |
| 1446 | |
| 1447 | /* Cleanup any remote ports, if the node is coming out of reset */ |
| 1448 | msm_ipc_cleanup_remote_port_info(xprt_info->remote_node_id); |
| 1449 | |
| 1450 | /* Send a reply HELLO message */ |
| 1451 | memset(&ctl, 0, sizeof(ctl)); |
| 1452 | ctl.cmd = IPC_ROUTER_CTRL_CMD_HELLO; |
| 1453 | rc = msm_ipc_router_send_control_msg(xprt_info, &ctl); |
| 1454 | if (rc < 0) { |
| 1455 | pr_err("%s: Error sending reply HELLO message\n", __func__); |
| 1456 | return rc; |
| 1457 | } |
| 1458 | xprt_info->initialized = 1; |
| 1459 | |
| 1460 | /* |
| 1461 | * Send list of servers from the local node and from nodes |
| 1462 | * outside the mesh network in which this XPRT is part of. |
| 1463 | */ |
Karthikeyan Ramasubramanian | 05066a8 | 2012-10-31 15:12:08 -0600 | [diff] [blame] | 1464 | mutex_lock(&server_list_lock); |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 1465 | mutex_lock(&routing_table_lock); |
| 1466 | for (i = 0; i < RT_HASH_SIZE; i++) { |
| 1467 | list_for_each_entry(rt_entry, &routing_table[i], list) { |
| 1468 | if ((rt_entry->node_id != IPC_ROUTER_NID_LOCAL) && |
Karthikeyan Ramasubramanian | c4c0aaa | 2013-01-30 14:17:57 -0700 | [diff] [blame] | 1469 | (!rt_entry->xprt_info || |
| 1470 | (rt_entry->xprt_info->xprt->link_id == |
| 1471 | xprt_info->xprt->link_id))) |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 1472 | continue; |
| 1473 | rc = msm_ipc_router_send_server_list(rt_entry->node_id, |
| 1474 | xprt_info); |
| 1475 | if (rc < 0) { |
| 1476 | mutex_unlock(&routing_table_lock); |
Karthikeyan Ramasubramanian | 05066a8 | 2012-10-31 15:12:08 -0600 | [diff] [blame] | 1477 | mutex_unlock(&server_list_lock); |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 1478 | return rc; |
| 1479 | } |
| 1480 | } |
| 1481 | } |
| 1482 | mutex_unlock(&routing_table_lock); |
Karthikeyan Ramasubramanian | 05066a8 | 2012-10-31 15:12:08 -0600 | [diff] [blame] | 1483 | mutex_unlock(&server_list_lock); |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 1484 | RR("HELLO message processed\n"); |
| 1485 | return rc; |
| 1486 | } |
| 1487 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1488 | static int process_control_msg(struct msm_ipc_router_xprt_info *xprt_info, |
| 1489 | struct rr_packet *pkt) |
| 1490 | { |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1491 | union rr_control_msg *msg; |
| 1492 | struct msm_ipc_router_remote_port *rport_ptr; |
| 1493 | int rc = 0; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1494 | struct sk_buff *temp_ptr; |
| 1495 | struct rr_header *hdr; |
| 1496 | struct msm_ipc_server *server; |
| 1497 | struct msm_ipc_routing_table_entry *rt_entry; |
| 1498 | |
| 1499 | if (pkt->length != (IPC_ROUTER_HDR_SIZE + sizeof(*msg))) { |
| 1500 | pr_err("%s: r2r msg size %d != %d\n", __func__, pkt->length, |
| 1501 | (IPC_ROUTER_HDR_SIZE + sizeof(*msg))); |
| 1502 | return -EINVAL; |
| 1503 | } |
| 1504 | |
| 1505 | temp_ptr = skb_peek(pkt->pkt_fragment_q); |
Karthikeyan Ramasubramanian | 9024dd8 | 2011-12-19 18:44:19 -0700 | [diff] [blame] | 1506 | if (!temp_ptr) { |
| 1507 | pr_err("%s: pkt_fragment_q is empty\n", __func__); |
| 1508 | return -EINVAL; |
| 1509 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1510 | hdr = (struct rr_header *)temp_ptr->data; |
Karthikeyan Ramasubramanian | 9024dd8 | 2011-12-19 18:44:19 -0700 | [diff] [blame] | 1511 | if (!hdr) { |
| 1512 | pr_err("%s: No data inside the skb\n", __func__); |
| 1513 | return -EINVAL; |
| 1514 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1515 | msg = (union rr_control_msg *)((char *)hdr + IPC_ROUTER_HDR_SIZE); |
| 1516 | |
| 1517 | switch (msg->cmd) { |
| 1518 | case IPC_ROUTER_CTRL_CMD_HELLO: |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 1519 | rc = process_hello_msg(xprt_info, hdr); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1520 | break; |
Karthikeyan Ramasubramanian | a2b7fdb | 2012-10-23 13:12:44 -0600 | [diff] [blame] | 1521 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1522 | case IPC_ROUTER_CTRL_CMD_RESUME_TX: |
| 1523 | RR("o RESUME_TX id=%d:%08x\n", |
| 1524 | msg->cli.node_id, msg->cli.port_id); |
| 1525 | |
| 1526 | rport_ptr = msm_ipc_router_lookup_remote_port(msg->cli.node_id, |
| 1527 | msg->cli.port_id); |
| 1528 | if (!rport_ptr) { |
| 1529 | pr_err("%s: Unable to resume client\n", __func__); |
| 1530 | break; |
| 1531 | } |
| 1532 | mutex_lock(&rport_ptr->quota_lock); |
| 1533 | rport_ptr->tx_quota_cnt = 0; |
| 1534 | mutex_unlock(&rport_ptr->quota_lock); |
| 1535 | wake_up(&rport_ptr->quota_wait); |
| 1536 | break; |
| 1537 | |
| 1538 | case IPC_ROUTER_CTRL_CMD_NEW_SERVER: |
| 1539 | if (msg->srv.instance == 0) { |
| 1540 | pr_err( |
| 1541 | "rpcrouter: Server create rejected, version = 0, " |
| 1542 | "service = %08x\n", msg->srv.service); |
| 1543 | break; |
| 1544 | } |
| 1545 | |
| 1546 | RR("o NEW_SERVER id=%d:%08x service=%08x:%08x\n", |
| 1547 | msg->srv.node_id, msg->srv.port_id, |
| 1548 | msg->srv.service, msg->srv.instance); |
| 1549 | |
| 1550 | mutex_lock(&routing_table_lock); |
| 1551 | rt_entry = lookup_routing_table(msg->srv.node_id); |
| 1552 | if (!rt_entry) { |
| 1553 | rt_entry = alloc_routing_table_entry(msg->srv.node_id); |
| 1554 | if (!rt_entry) { |
| 1555 | mutex_unlock(&routing_table_lock); |
| 1556 | pr_err("%s: rt_entry allocation failed\n", |
| 1557 | __func__); |
| 1558 | return -ENOMEM; |
| 1559 | } |
| 1560 | mutex_lock(&rt_entry->lock); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1561 | rt_entry->neighbor_node_id = xprt_info->remote_node_id; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1562 | rt_entry->xprt_info = xprt_info; |
| 1563 | mutex_unlock(&rt_entry->lock); |
| 1564 | add_routing_table_entry(rt_entry); |
| 1565 | } |
| 1566 | mutex_unlock(&routing_table_lock); |
| 1567 | |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1568 | mutex_lock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1569 | server = msm_ipc_router_lookup_server(msg->srv.service, |
| 1570 | msg->srv.instance, |
| 1571 | msg->srv.node_id, |
| 1572 | msg->srv.port_id); |
| 1573 | if (!server) { |
| 1574 | server = msm_ipc_router_create_server( |
| 1575 | msg->srv.service, msg->srv.instance, |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1576 | msg->srv.node_id, msg->srv.port_id, xprt_info); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1577 | if (!server) { |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1578 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1579 | pr_err("%s: Server Create failed\n", __func__); |
| 1580 | return -ENOMEM; |
| 1581 | } |
| 1582 | |
| 1583 | if (!msm_ipc_router_lookup_remote_port( |
| 1584 | msg->srv.node_id, msg->srv.port_id)) { |
| 1585 | rport_ptr = msm_ipc_router_create_remote_port( |
| 1586 | msg->srv.node_id, msg->srv.port_id); |
| 1587 | if (!rport_ptr) |
| 1588 | pr_err("%s: Remote port create " |
| 1589 | "failed\n", __func__); |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 1590 | rport_ptr->sec_rule = |
| 1591 | msm_ipc_get_security_rule( |
| 1592 | msg->srv.service, msg->srv.instance); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1593 | } |
| 1594 | wake_up(&newserver_wait); |
| 1595 | } |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1596 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1597 | |
| 1598 | relay_msg(xprt_info, pkt); |
| 1599 | post_control_ports(pkt); |
| 1600 | break; |
| 1601 | case IPC_ROUTER_CTRL_CMD_REMOVE_SERVER: |
| 1602 | RR("o REMOVE_SERVER service=%08x:%d\n", |
| 1603 | msg->srv.service, msg->srv.instance); |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1604 | mutex_lock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1605 | server = msm_ipc_router_lookup_server(msg->srv.service, |
| 1606 | msg->srv.instance, |
| 1607 | msg->srv.node_id, |
| 1608 | msg->srv.port_id); |
| 1609 | if (server) { |
| 1610 | msm_ipc_router_destroy_server(server, |
| 1611 | msg->srv.node_id, |
| 1612 | msg->srv.port_id); |
| 1613 | relay_msg(xprt_info, pkt); |
| 1614 | post_control_ports(pkt); |
| 1615 | } |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1616 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1617 | break; |
| 1618 | case IPC_ROUTER_CTRL_CMD_REMOVE_CLIENT: |
| 1619 | RR("o REMOVE_CLIENT id=%d:%08x\n", |
| 1620 | msg->cli.node_id, msg->cli.port_id); |
| 1621 | rport_ptr = msm_ipc_router_lookup_remote_port(msg->cli.node_id, |
| 1622 | msg->cli.port_id); |
| 1623 | if (rport_ptr) |
| 1624 | msm_ipc_router_destroy_remote_port(rport_ptr); |
| 1625 | |
| 1626 | relay_msg(xprt_info, pkt); |
| 1627 | post_control_ports(pkt); |
| 1628 | break; |
| 1629 | case IPC_ROUTER_CTRL_CMD_PING: |
| 1630 | /* No action needed for ping messages received */ |
| 1631 | RR("o PING\n"); |
| 1632 | break; |
| 1633 | default: |
| 1634 | RR("o UNKNOWN(%08x)\n", msg->cmd); |
| 1635 | rc = -ENOSYS; |
| 1636 | } |
| 1637 | |
| 1638 | return rc; |
| 1639 | } |
| 1640 | |
| 1641 | static void do_read_data(struct work_struct *work) |
| 1642 | { |
| 1643 | struct rr_header *hdr; |
| 1644 | struct rr_packet *pkt = NULL; |
| 1645 | struct msm_ipc_port *port_ptr; |
| 1646 | struct sk_buff *head_skb; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1647 | struct msm_ipc_router_remote_port *rport_ptr; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1648 | uint32_t resume_tx, resume_tx_node_id, resume_tx_port_id; |
| 1649 | |
| 1650 | struct msm_ipc_router_xprt_info *xprt_info = |
| 1651 | container_of(work, |
| 1652 | struct msm_ipc_router_xprt_info, |
| 1653 | read_data); |
| 1654 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1655 | while ((pkt = rr_read(xprt_info)) != NULL) { |
| 1656 | if (pkt->length < IPC_ROUTER_HDR_SIZE || |
| 1657 | pkt->length > MAX_IPC_PKT_SIZE) { |
| 1658 | pr_err("%s: Invalid pkt length %d\n", |
| 1659 | __func__, pkt->length); |
| 1660 | goto fail_data; |
| 1661 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1662 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1663 | head_skb = skb_peek(pkt->pkt_fragment_q); |
| 1664 | if (!head_skb) { |
| 1665 | pr_err("%s: head_skb is invalid\n", __func__); |
| 1666 | goto fail_data; |
| 1667 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1668 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1669 | hdr = (struct rr_header *)(head_skb->data); |
Karthikeyan Ramasubramanian | 2bfe8ec | 2013-03-22 10:47:20 -0600 | [diff] [blame] | 1670 | RAW("ver=%d type=%d src=%d:%08x crx=%d siz=%d dst=%d:%08x\n", |
| 1671 | hdr->version, hdr->type, hdr->src_node_id, |
| 1672 | hdr->src_port_id, hdr->confirm_rx, hdr->size, |
| 1673 | hdr->dst_node_id, hdr->dst_port_id); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1674 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1675 | if (hdr->version != IPC_ROUTER_VERSION) { |
| 1676 | pr_err("version %d != %d\n", |
| 1677 | hdr->version, IPC_ROUTER_VERSION); |
| 1678 | goto fail_data; |
| 1679 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1680 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1681 | if ((hdr->dst_node_id != IPC_ROUTER_NID_LOCAL) && |
| 1682 | ((hdr->type == IPC_ROUTER_CTRL_CMD_RESUME_TX) || |
| 1683 | (hdr->type == IPC_ROUTER_CTRL_CMD_DATA))) { |
| 1684 | forward_msg(xprt_info, pkt); |
| 1685 | release_pkt(pkt); |
| 1686 | continue; |
| 1687 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1688 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1689 | if ((hdr->dst_port_id == IPC_ROUTER_ADDRESS) || |
| 1690 | (hdr->type == IPC_ROUTER_CTRL_CMD_HELLO)) { |
| 1691 | process_control_msg(xprt_info, pkt); |
| 1692 | release_pkt(pkt); |
| 1693 | continue; |
| 1694 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1695 | #if defined(CONFIG_MSM_SMD_LOGGING) |
| 1696 | #if defined(DEBUG) |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1697 | if (msm_ipc_router_debug_mask & SMEM_LOG) { |
| 1698 | smem_log_event((SMEM_LOG_PROC_ID_APPS | |
| 1699 | SMEM_LOG_RPC_ROUTER_EVENT_BASE | |
| 1700 | IPC_ROUTER_LOG_EVENT_RX), |
| 1701 | (hdr->src_node_id << 24) | |
| 1702 | (hdr->src_port_id & 0xffffff), |
| 1703 | (hdr->dst_node_id << 24) | |
| 1704 | (hdr->dst_port_id & 0xffffff), |
| 1705 | (hdr->type << 24) | (hdr->confirm_rx << 16) | |
| 1706 | (hdr->size & 0xffff)); |
| 1707 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1708 | #endif |
| 1709 | #endif |
| 1710 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1711 | resume_tx = hdr->confirm_rx; |
| 1712 | resume_tx_node_id = hdr->dst_node_id; |
| 1713 | resume_tx_port_id = hdr->dst_port_id; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1714 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1715 | rport_ptr = msm_ipc_router_lookup_remote_port(hdr->src_node_id, |
Karthikeyan Ramasubramanian | be9954b | 2012-06-13 12:59:54 -0600 | [diff] [blame] | 1716 | hdr->src_port_id); |
| 1717 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1718 | mutex_lock(&local_ports_lock); |
| 1719 | port_ptr = msm_ipc_router_lookup_local_port(hdr->dst_port_id); |
| 1720 | if (!port_ptr) { |
| 1721 | pr_err("%s: No local port id %08x\n", __func__, |
| 1722 | hdr->dst_port_id); |
Karthikeyan Ramasubramanian | be9954b | 2012-06-13 12:59:54 -0600 | [diff] [blame] | 1723 | mutex_unlock(&local_ports_lock); |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1724 | release_pkt(pkt); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1725 | goto process_done; |
| 1726 | } |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1727 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1728 | if (!rport_ptr) { |
| 1729 | rport_ptr = msm_ipc_router_create_remote_port( |
| 1730 | hdr->src_node_id, |
| 1731 | hdr->src_port_id); |
| 1732 | if (!rport_ptr) { |
| 1733 | pr_err("%s: Rmt Prt %08x:%08x create failed\n", |
| 1734 | __func__, hdr->src_node_id, |
| 1735 | hdr->src_port_id); |
| 1736 | mutex_unlock(&local_ports_lock); |
| 1737 | goto process_done; |
| 1738 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1739 | } |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1740 | |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 1741 | mutex_lock(&port_ptr->port_rx_q_lock); |
| 1742 | wake_lock(&port_ptr->port_rx_wake_lock); |
| 1743 | list_add_tail(&pkt->list, &port_ptr->port_rx_q); |
| 1744 | wake_up(&port_ptr->port_rx_wait_q); |
| 1745 | if (port_ptr->notify) |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1746 | port_ptr->notify(MSM_IPC_ROUTER_READ_CB, |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 1747 | port_ptr->priv); |
| 1748 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 1749 | mutex_unlock(&local_ports_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1750 | |
| 1751 | process_done: |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1752 | if (resume_tx) { |
| 1753 | union rr_control_msg msg; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1754 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1755 | msg.cmd = IPC_ROUTER_CTRL_CMD_RESUME_TX; |
| 1756 | msg.cli.node_id = resume_tx_node_id; |
| 1757 | msg.cli.port_id = resume_tx_port_id; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1758 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 1759 | RR("x RESUME_TX id=%d:%08x\n", |
| 1760 | msg.cli.node_id, msg.cli.port_id); |
| 1761 | msm_ipc_router_send_control_msg(xprt_info, &msg); |
| 1762 | } |
| 1763 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1764 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1765 | return; |
| 1766 | |
| 1767 | fail_data: |
| 1768 | release_pkt(pkt); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1769 | pr_err("ipc_router has died\n"); |
| 1770 | } |
| 1771 | |
| 1772 | int msm_ipc_router_register_server(struct msm_ipc_port *port_ptr, |
| 1773 | struct msm_ipc_addr *name) |
| 1774 | { |
| 1775 | struct msm_ipc_server *server; |
| 1776 | unsigned long flags; |
| 1777 | union rr_control_msg ctl; |
| 1778 | |
| 1779 | if (!port_ptr || !name) |
| 1780 | return -EINVAL; |
| 1781 | |
| 1782 | if (name->addrtype != MSM_IPC_ADDR_NAME) |
| 1783 | return -EINVAL; |
| 1784 | |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1785 | mutex_lock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1786 | server = msm_ipc_router_lookup_server(name->addr.port_name.service, |
| 1787 | name->addr.port_name.instance, |
| 1788 | IPC_ROUTER_NID_LOCAL, |
| 1789 | port_ptr->this_port.port_id); |
| 1790 | if (server) { |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1791 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1792 | pr_err("%s: Server already present\n", __func__); |
| 1793 | return -EINVAL; |
| 1794 | } |
| 1795 | |
| 1796 | server = msm_ipc_router_create_server(name->addr.port_name.service, |
| 1797 | name->addr.port_name.instance, |
| 1798 | IPC_ROUTER_NID_LOCAL, |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1799 | port_ptr->this_port.port_id, |
| 1800 | NULL); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1801 | if (!server) { |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1802 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1803 | pr_err("%s: Server Creation failed\n", __func__); |
| 1804 | return -EINVAL; |
| 1805 | } |
| 1806 | |
| 1807 | ctl.cmd = IPC_ROUTER_CTRL_CMD_NEW_SERVER; |
| 1808 | ctl.srv.service = server->name.service; |
| 1809 | ctl.srv.instance = server->name.instance; |
| 1810 | ctl.srv.node_id = IPC_ROUTER_NID_LOCAL; |
| 1811 | ctl.srv.port_id = port_ptr->this_port.port_id; |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1812 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1813 | broadcast_ctl_msg(&ctl); |
| 1814 | spin_lock_irqsave(&port_ptr->port_lock, flags); |
| 1815 | port_ptr->type = SERVER_PORT; |
| 1816 | port_ptr->port_name.service = server->name.service; |
| 1817 | port_ptr->port_name.instance = server->name.instance; |
| 1818 | spin_unlock_irqrestore(&port_ptr->port_lock, flags); |
| 1819 | return 0; |
| 1820 | } |
| 1821 | |
| 1822 | int msm_ipc_router_unregister_server(struct msm_ipc_port *port_ptr) |
| 1823 | { |
| 1824 | struct msm_ipc_server *server; |
| 1825 | unsigned long flags; |
| 1826 | union rr_control_msg ctl; |
| 1827 | |
| 1828 | if (!port_ptr) |
| 1829 | return -EINVAL; |
| 1830 | |
| 1831 | if (port_ptr->type != SERVER_PORT) { |
| 1832 | pr_err("%s: Trying to unregister a non-server port\n", |
| 1833 | __func__); |
| 1834 | return -EINVAL; |
| 1835 | } |
| 1836 | |
| 1837 | if (port_ptr->this_port.node_id != IPC_ROUTER_NID_LOCAL) { |
| 1838 | pr_err("%s: Trying to unregister a remote server locally\n", |
| 1839 | __func__); |
| 1840 | return -EINVAL; |
| 1841 | } |
| 1842 | |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1843 | mutex_lock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1844 | server = msm_ipc_router_lookup_server(port_ptr->port_name.service, |
| 1845 | port_ptr->port_name.instance, |
| 1846 | port_ptr->this_port.node_id, |
| 1847 | port_ptr->this_port.port_id); |
| 1848 | if (!server) { |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1849 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1850 | pr_err("%s: Server lookup failed\n", __func__); |
| 1851 | return -ENODEV; |
| 1852 | } |
| 1853 | |
| 1854 | ctl.cmd = IPC_ROUTER_CTRL_CMD_REMOVE_SERVER; |
| 1855 | ctl.srv.service = server->name.service; |
| 1856 | ctl.srv.instance = server->name.instance; |
| 1857 | ctl.srv.node_id = IPC_ROUTER_NID_LOCAL; |
| 1858 | ctl.srv.port_id = port_ptr->this_port.port_id; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1859 | msm_ipc_router_destroy_server(server, port_ptr->this_port.node_id, |
| 1860 | port_ptr->this_port.port_id); |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 1861 | mutex_unlock(&server_list_lock); |
| 1862 | broadcast_ctl_msg(&ctl); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1863 | spin_lock_irqsave(&port_ptr->port_lock, flags); |
| 1864 | port_ptr->type = CLIENT_PORT; |
| 1865 | spin_unlock_irqrestore(&port_ptr->port_lock, flags); |
| 1866 | return 0; |
| 1867 | } |
| 1868 | |
| 1869 | static int loopback_data(struct msm_ipc_port *src, |
| 1870 | uint32_t port_id, |
| 1871 | struct sk_buff_head *data) |
| 1872 | { |
| 1873 | struct sk_buff *head_skb; |
| 1874 | struct rr_header *hdr; |
| 1875 | struct msm_ipc_port *port_ptr; |
| 1876 | struct rr_packet *pkt; |
Karthikeyan Ramasubramanian | b0e23c5 | 2013-02-08 13:07:42 -0700 | [diff] [blame] | 1877 | int ret_len; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1878 | |
| 1879 | if (!data) { |
| 1880 | pr_err("%s: Invalid pkt pointer\n", __func__); |
| 1881 | return -EINVAL; |
| 1882 | } |
| 1883 | |
| 1884 | pkt = create_pkt(data); |
| 1885 | if (!pkt) { |
| 1886 | pr_err("%s: New pkt create failed\n", __func__); |
| 1887 | return -ENOMEM; |
| 1888 | } |
| 1889 | |
| 1890 | head_skb = skb_peek(pkt->pkt_fragment_q); |
Karthikeyan Ramasubramanian | 9024dd8 | 2011-12-19 18:44:19 -0700 | [diff] [blame] | 1891 | if (!head_skb) { |
| 1892 | pr_err("%s: pkt_fragment_q is empty\n", __func__); |
| 1893 | return -EINVAL; |
| 1894 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1895 | hdr = (struct rr_header *)skb_push(head_skb, IPC_ROUTER_HDR_SIZE); |
| 1896 | if (!hdr) { |
| 1897 | pr_err("%s: Prepend Header failed\n", __func__); |
| 1898 | release_pkt(pkt); |
| 1899 | return -ENOMEM; |
| 1900 | } |
| 1901 | hdr->version = IPC_ROUTER_VERSION; |
| 1902 | hdr->type = IPC_ROUTER_CTRL_CMD_DATA; |
| 1903 | hdr->src_node_id = src->this_port.node_id; |
| 1904 | hdr->src_port_id = src->this_port.port_id; |
| 1905 | hdr->size = pkt->length; |
| 1906 | hdr->confirm_rx = 0; |
| 1907 | hdr->dst_node_id = IPC_ROUTER_NID_LOCAL; |
| 1908 | hdr->dst_port_id = port_id; |
| 1909 | pkt->length += IPC_ROUTER_HDR_SIZE; |
| 1910 | |
Karthikeyan Ramasubramanian | be9954b | 2012-06-13 12:59:54 -0600 | [diff] [blame] | 1911 | mutex_lock(&local_ports_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1912 | port_ptr = msm_ipc_router_lookup_local_port(port_id); |
| 1913 | if (!port_ptr) { |
| 1914 | pr_err("%s: Local port %d not present\n", __func__, port_id); |
Karthikeyan Ramasubramanian | be9954b | 2012-06-13 12:59:54 -0600 | [diff] [blame] | 1915 | mutex_unlock(&local_ports_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1916 | release_pkt(pkt); |
| 1917 | return -ENODEV; |
| 1918 | } |
| 1919 | |
| 1920 | mutex_lock(&port_ptr->port_rx_q_lock); |
| 1921 | wake_lock(&port_ptr->port_rx_wake_lock); |
| 1922 | list_add_tail(&pkt->list, &port_ptr->port_rx_q); |
Karthikeyan Ramasubramanian | b0e23c5 | 2013-02-08 13:07:42 -0700 | [diff] [blame] | 1923 | ret_len = pkt->length; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1924 | wake_up(&port_ptr->port_rx_wait_q); |
| 1925 | mutex_unlock(&port_ptr->port_rx_q_lock); |
Karthikeyan Ramasubramanian | be9954b | 2012-06-13 12:59:54 -0600 | [diff] [blame] | 1926 | mutex_unlock(&local_ports_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1927 | |
Karthikeyan Ramasubramanian | b0e23c5 | 2013-02-08 13:07:42 -0700 | [diff] [blame] | 1928 | return ret_len; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1929 | } |
| 1930 | |
| 1931 | static int msm_ipc_router_write_pkt(struct msm_ipc_port *src, |
| 1932 | struct msm_ipc_router_remote_port *rport_ptr, |
| 1933 | struct rr_packet *pkt) |
| 1934 | { |
| 1935 | struct sk_buff *head_skb; |
| 1936 | struct rr_header *hdr; |
| 1937 | struct msm_ipc_router_xprt_info *xprt_info; |
| 1938 | struct msm_ipc_routing_table_entry *rt_entry; |
| 1939 | int ret; |
| 1940 | DEFINE_WAIT(__wait); |
| 1941 | |
| 1942 | if (!rport_ptr || !src || !pkt) |
| 1943 | return -EINVAL; |
| 1944 | |
| 1945 | head_skb = skb_peek(pkt->pkt_fragment_q); |
Karthikeyan Ramasubramanian | 9024dd8 | 2011-12-19 18:44:19 -0700 | [diff] [blame] | 1946 | if (!head_skb) { |
| 1947 | pr_err("%s: pkt_fragment_q is empty\n", __func__); |
| 1948 | return -EINVAL; |
| 1949 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1950 | hdr = (struct rr_header *)skb_push(head_skb, IPC_ROUTER_HDR_SIZE); |
| 1951 | if (!hdr) { |
| 1952 | pr_err("%s: Prepend Header failed\n", __func__); |
| 1953 | return -ENOMEM; |
| 1954 | } |
| 1955 | hdr->version = IPC_ROUTER_VERSION; |
| 1956 | hdr->type = IPC_ROUTER_CTRL_CMD_DATA; |
| 1957 | hdr->src_node_id = src->this_port.node_id; |
| 1958 | hdr->src_port_id = src->this_port.port_id; |
| 1959 | hdr->size = pkt->length; |
| 1960 | hdr->confirm_rx = 0; |
| 1961 | hdr->dst_node_id = rport_ptr->node_id; |
| 1962 | hdr->dst_port_id = rport_ptr->port_id; |
| 1963 | pkt->length += IPC_ROUTER_HDR_SIZE; |
| 1964 | |
| 1965 | for (;;) { |
| 1966 | prepare_to_wait(&rport_ptr->quota_wait, &__wait, |
| 1967 | TASK_INTERRUPTIBLE); |
| 1968 | mutex_lock(&rport_ptr->quota_lock); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1969 | if (rport_ptr->restart_state != RESTART_NORMAL) |
| 1970 | break; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1971 | if (rport_ptr->tx_quota_cnt < |
| 1972 | IPC_ROUTER_DEFAULT_RX_QUOTA) |
| 1973 | break; |
| 1974 | if (signal_pending(current)) |
| 1975 | break; |
| 1976 | mutex_unlock(&rport_ptr->quota_lock); |
| 1977 | schedule(); |
| 1978 | } |
| 1979 | finish_wait(&rport_ptr->quota_wait, &__wait); |
| 1980 | |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 1981 | if (rport_ptr->restart_state != RESTART_NORMAL) { |
| 1982 | mutex_unlock(&rport_ptr->quota_lock); |
| 1983 | return -ENETRESET; |
| 1984 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1985 | if (signal_pending(current)) { |
| 1986 | mutex_unlock(&rport_ptr->quota_lock); |
| 1987 | return -ERESTARTSYS; |
| 1988 | } |
| 1989 | rport_ptr->tx_quota_cnt++; |
| 1990 | if (rport_ptr->tx_quota_cnt == IPC_ROUTER_DEFAULT_RX_QUOTA) |
| 1991 | hdr->confirm_rx = 1; |
| 1992 | mutex_unlock(&rport_ptr->quota_lock); |
| 1993 | |
| 1994 | mutex_lock(&routing_table_lock); |
| 1995 | rt_entry = lookup_routing_table(hdr->dst_node_id); |
| 1996 | if (!rt_entry || !rt_entry->xprt_info) { |
| 1997 | mutex_unlock(&routing_table_lock); |
| 1998 | pr_err("%s: Remote node %d not up\n", |
| 1999 | __func__, hdr->dst_node_id); |
| 2000 | return -ENODEV; |
| 2001 | } |
| 2002 | mutex_lock(&rt_entry->lock); |
| 2003 | xprt_info = rt_entry->xprt_info; |
| 2004 | mutex_lock(&xprt_info->tx_lock); |
Karthikeyan Ramasubramanian | 8cec592 | 2012-02-16 17:41:58 -0700 | [diff] [blame] | 2005 | ret = xprt_info->xprt->write(pkt, pkt->length, xprt_info->xprt); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2006 | mutex_unlock(&xprt_info->tx_lock); |
| 2007 | mutex_unlock(&rt_entry->lock); |
| 2008 | mutex_unlock(&routing_table_lock); |
| 2009 | |
| 2010 | if (ret < 0) { |
| 2011 | pr_err("%s: Write on XPRT failed\n", __func__); |
| 2012 | return ret; |
| 2013 | } |
| 2014 | |
| 2015 | RAW_HDR("[w rr_h] " |
| 2016 | "ver=%i,type=%s,src_nid=%08x,src_port_id=%08x," |
| 2017 | "confirm_rx=%i,size=%3i,dst_pid=%08x,dst_cid=%08x\n", |
| 2018 | hdr->version, type_to_str(hdr->type), |
| 2019 | hdr->src_node_id, hdr->src_port_id, |
| 2020 | hdr->confirm_rx, hdr->size, |
| 2021 | hdr->dst_node_id, hdr->dst_port_id); |
| 2022 | |
| 2023 | #if defined(CONFIG_MSM_SMD_LOGGING) |
| 2024 | #if defined(DEBUG) |
| 2025 | if (msm_ipc_router_debug_mask & SMEM_LOG) { |
| 2026 | smem_log_event((SMEM_LOG_PROC_ID_APPS | |
| 2027 | SMEM_LOG_RPC_ROUTER_EVENT_BASE | |
| 2028 | IPC_ROUTER_LOG_EVENT_TX), |
| 2029 | (hdr->src_node_id << 24) | |
| 2030 | (hdr->src_port_id & 0xffffff), |
| 2031 | (hdr->dst_node_id << 24) | |
| 2032 | (hdr->dst_port_id & 0xffffff), |
| 2033 | (hdr->type << 24) | (hdr->confirm_rx << 16) | |
| 2034 | (hdr->size & 0xffff)); |
| 2035 | } |
| 2036 | #endif |
| 2037 | #endif |
| 2038 | |
| 2039 | return pkt->length; |
| 2040 | } |
| 2041 | |
| 2042 | int msm_ipc_router_send_to(struct msm_ipc_port *src, |
| 2043 | struct sk_buff_head *data, |
| 2044 | struct msm_ipc_addr *dest) |
| 2045 | { |
| 2046 | uint32_t dst_node_id = 0, dst_port_id = 0; |
| 2047 | struct msm_ipc_server *server; |
| 2048 | struct msm_ipc_server_port *server_port; |
| 2049 | struct msm_ipc_router_remote_port *rport_ptr = NULL; |
| 2050 | struct rr_packet *pkt; |
| 2051 | int ret; |
| 2052 | |
| 2053 | if (!src || !data || !dest) { |
| 2054 | pr_err("%s: Invalid Parameters\n", __func__); |
| 2055 | return -EINVAL; |
| 2056 | } |
| 2057 | |
| 2058 | /* Resolve Address*/ |
| 2059 | if (dest->addrtype == MSM_IPC_ADDR_ID) { |
| 2060 | dst_node_id = dest->addr.port_addr.node_id; |
| 2061 | dst_port_id = dest->addr.port_addr.port_id; |
| 2062 | } else if (dest->addrtype == MSM_IPC_ADDR_NAME) { |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2063 | mutex_lock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2064 | server = msm_ipc_router_lookup_server( |
| 2065 | dest->addr.port_name.service, |
| 2066 | dest->addr.port_name.instance, |
| 2067 | 0, 0); |
| 2068 | if (!server) { |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2069 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2070 | pr_err("%s: Destination not reachable\n", __func__); |
| 2071 | return -ENODEV; |
| 2072 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2073 | server_port = list_first_entry(&server->server_port_list, |
| 2074 | struct msm_ipc_server_port, |
| 2075 | list); |
| 2076 | dst_node_id = server_port->server_addr.node_id; |
| 2077 | dst_port_id = server_port->server_addr.port_id; |
| 2078 | mutex_unlock(&server_list_lock); |
| 2079 | } |
| 2080 | if (dst_node_id == IPC_ROUTER_NID_LOCAL) { |
| 2081 | ret = loopback_data(src, dst_port_id, data); |
| 2082 | return ret; |
| 2083 | } |
| 2084 | |
| 2085 | /* Achieve Flow control */ |
| 2086 | rport_ptr = msm_ipc_router_lookup_remote_port(dst_node_id, |
| 2087 | dst_port_id); |
| 2088 | if (!rport_ptr) { |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2089 | pr_err("%s: Could not create remote port\n", __func__); |
| 2090 | return -ENOMEM; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2091 | } |
| 2092 | |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 2093 | if (src->check_send_permissions) { |
| 2094 | ret = src->check_send_permissions(rport_ptr->sec_rule); |
| 2095 | if (ret <= 0) { |
| 2096 | pr_err("%s: permission failure for %s\n", |
| 2097 | __func__, current->comm); |
| 2098 | return -EPERM; |
| 2099 | } |
| 2100 | } |
| 2101 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2102 | pkt = create_pkt(data); |
| 2103 | if (!pkt) { |
| 2104 | pr_err("%s: Pkt creation failed\n", __func__); |
| 2105 | return -ENOMEM; |
| 2106 | } |
| 2107 | |
| 2108 | ret = msm_ipc_router_write_pkt(src, rport_ptr, pkt); |
| 2109 | release_pkt(pkt); |
| 2110 | |
| 2111 | return ret; |
| 2112 | } |
| 2113 | |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 2114 | int msm_ipc_router_send_msg(struct msm_ipc_port *src, |
| 2115 | struct msm_ipc_addr *dest, |
| 2116 | void *data, unsigned int data_len) |
| 2117 | { |
| 2118 | struct sk_buff_head *out_skb_head; |
| 2119 | int ret; |
| 2120 | |
| 2121 | out_skb_head = msm_ipc_router_buf_to_skb(data, data_len); |
| 2122 | if (!out_skb_head) { |
| 2123 | pr_err("%s: SKB conversion failed\n", __func__); |
| 2124 | return -EFAULT; |
| 2125 | } |
| 2126 | |
| 2127 | ret = msm_ipc_router_send_to(src, out_skb_head, dest); |
| 2128 | if (ret < 0) { |
| 2129 | pr_err("%s: msm_ipc_router_send_to failed - ret: %d\n", |
| 2130 | __func__, ret); |
| 2131 | msm_ipc_router_free_skb(out_skb_head); |
| 2132 | } |
| 2133 | return 0; |
| 2134 | } |
| 2135 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2136 | int msm_ipc_router_read(struct msm_ipc_port *port_ptr, |
| 2137 | struct sk_buff_head **data, |
| 2138 | size_t buf_len) |
| 2139 | { |
| 2140 | struct rr_packet *pkt; |
| 2141 | int ret; |
| 2142 | |
| 2143 | if (!port_ptr || !data) |
| 2144 | return -EINVAL; |
| 2145 | |
| 2146 | mutex_lock(&port_ptr->port_rx_q_lock); |
| 2147 | if (list_empty(&port_ptr->port_rx_q)) { |
| 2148 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 2149 | return -EAGAIN; |
| 2150 | } |
| 2151 | |
| 2152 | pkt = list_first_entry(&port_ptr->port_rx_q, struct rr_packet, list); |
| 2153 | if ((buf_len) && ((pkt->length - IPC_ROUTER_HDR_SIZE) > buf_len)) { |
| 2154 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 2155 | return -ETOOSMALL; |
| 2156 | } |
| 2157 | list_del(&pkt->list); |
| 2158 | if (list_empty(&port_ptr->port_rx_q)) |
| 2159 | wake_unlock(&port_ptr->port_rx_wake_lock); |
| 2160 | *data = pkt->pkt_fragment_q; |
| 2161 | ret = pkt->length; |
| 2162 | kfree(pkt); |
| 2163 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 2164 | |
| 2165 | return ret; |
| 2166 | } |
| 2167 | |
| 2168 | int msm_ipc_router_recv_from(struct msm_ipc_port *port_ptr, |
| 2169 | struct sk_buff_head **data, |
| 2170 | struct msm_ipc_addr *src, |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 2171 | long timeout) |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2172 | { |
| 2173 | int ret, data_len, align_size; |
| 2174 | struct sk_buff *temp_skb; |
| 2175 | struct rr_header *hdr = NULL; |
| 2176 | |
| 2177 | if (!port_ptr || !data) { |
| 2178 | pr_err("%s: Invalid pointers being passed\n", __func__); |
| 2179 | return -EINVAL; |
| 2180 | } |
| 2181 | |
| 2182 | *data = NULL; |
| 2183 | mutex_lock(&port_ptr->port_rx_q_lock); |
| 2184 | while (list_empty(&port_ptr->port_rx_q)) { |
| 2185 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 2186 | if (timeout < 0) { |
| 2187 | ret = wait_event_interruptible( |
| 2188 | port_ptr->port_rx_wait_q, |
| 2189 | !list_empty(&port_ptr->port_rx_q)); |
| 2190 | if (ret) |
| 2191 | return ret; |
| 2192 | } else if (timeout > 0) { |
| 2193 | timeout = wait_event_interruptible_timeout( |
| 2194 | port_ptr->port_rx_wait_q, |
| 2195 | !list_empty(&port_ptr->port_rx_q), |
| 2196 | timeout); |
| 2197 | if (timeout < 0) |
| 2198 | return -EFAULT; |
| 2199 | } |
| 2200 | if (timeout == 0) |
| 2201 | return -ETIMEDOUT; |
| 2202 | mutex_lock(&port_ptr->port_rx_q_lock); |
| 2203 | } |
| 2204 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 2205 | |
| 2206 | ret = msm_ipc_router_read(port_ptr, data, 0); |
| 2207 | if (ret <= 0 || !(*data)) |
| 2208 | return ret; |
| 2209 | |
| 2210 | temp_skb = skb_peek(*data); |
| 2211 | hdr = (struct rr_header *)(temp_skb->data); |
| 2212 | if (src) { |
| 2213 | src->addrtype = MSM_IPC_ADDR_ID; |
| 2214 | src->addr.port_addr.node_id = hdr->src_node_id; |
| 2215 | src->addr.port_addr.port_id = hdr->src_port_id; |
| 2216 | } |
| 2217 | |
| 2218 | data_len = hdr->size; |
| 2219 | skb_pull(temp_skb, IPC_ROUTER_HDR_SIZE); |
| 2220 | align_size = ALIGN_SIZE(data_len); |
| 2221 | if (align_size) { |
| 2222 | temp_skb = skb_peek_tail(*data); |
| 2223 | skb_trim(temp_skb, (temp_skb->len - align_size)); |
| 2224 | } |
| 2225 | return data_len; |
| 2226 | } |
| 2227 | |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 2228 | int msm_ipc_router_read_msg(struct msm_ipc_port *port_ptr, |
| 2229 | struct msm_ipc_addr *src, |
| 2230 | unsigned char **data, |
| 2231 | unsigned int *len) |
| 2232 | { |
| 2233 | struct sk_buff_head *in_skb_head; |
| 2234 | int ret; |
| 2235 | |
| 2236 | ret = msm_ipc_router_recv_from(port_ptr, &in_skb_head, src, -1); |
| 2237 | if (ret < 0) { |
| 2238 | pr_err("%s: msm_ipc_router_recv_from failed - ret: %d\n", |
| 2239 | __func__, ret); |
| 2240 | return ret; |
| 2241 | } |
| 2242 | |
| 2243 | *data = msm_ipc_router_skb_to_buf(in_skb_head, ret); |
| 2244 | if (!(*data)) |
| 2245 | pr_err("%s: Buf conversion failed\n", __func__); |
| 2246 | |
| 2247 | *len = ret; |
| 2248 | msm_ipc_router_free_skb(in_skb_head); |
| 2249 | return 0; |
| 2250 | } |
| 2251 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2252 | struct msm_ipc_port *msm_ipc_router_create_port( |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 2253 | void (*notify)(unsigned event, void *priv), |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2254 | void *priv) |
| 2255 | { |
| 2256 | struct msm_ipc_port *port_ptr; |
Karthikeyan Ramasubramanian | efc493b | 2012-07-12 10:25:49 -0600 | [diff] [blame] | 2257 | int ret; |
| 2258 | |
| 2259 | ret = wait_for_completion_interruptible(&msm_ipc_local_router_up); |
| 2260 | if (ret < 0) { |
| 2261 | pr_err("%s: Error waiting for local router\n", __func__); |
| 2262 | return NULL; |
| 2263 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2264 | |
| 2265 | port_ptr = msm_ipc_router_create_raw_port(NULL, notify, priv); |
| 2266 | if (!port_ptr) |
| 2267 | pr_err("%s: port_ptr alloc failed\n", __func__); |
| 2268 | |
| 2269 | return port_ptr; |
| 2270 | } |
| 2271 | |
| 2272 | int msm_ipc_router_close_port(struct msm_ipc_port *port_ptr) |
| 2273 | { |
| 2274 | union rr_control_msg msg; |
| 2275 | struct rr_packet *pkt, *temp_pkt; |
| 2276 | struct msm_ipc_server *server; |
| 2277 | |
| 2278 | if (!port_ptr) |
| 2279 | return -EINVAL; |
| 2280 | |
| 2281 | if (port_ptr->type == SERVER_PORT || port_ptr->type == CLIENT_PORT) { |
Karthikeyan Ramasubramanian | be9954b | 2012-06-13 12:59:54 -0600 | [diff] [blame] | 2282 | mutex_lock(&local_ports_lock); |
| 2283 | list_del(&port_ptr->list); |
| 2284 | mutex_unlock(&local_ports_lock); |
| 2285 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2286 | if (port_ptr->type == SERVER_PORT) { |
| 2287 | msg.cmd = IPC_ROUTER_CTRL_CMD_REMOVE_SERVER; |
| 2288 | msg.srv.service = port_ptr->port_name.service; |
| 2289 | msg.srv.instance = port_ptr->port_name.instance; |
| 2290 | msg.srv.node_id = port_ptr->this_port.node_id; |
| 2291 | msg.srv.port_id = port_ptr->this_port.port_id; |
| 2292 | RR("x REMOVE_SERVER Name=%d:%08x Id=%d:%08x\n", |
| 2293 | msg.srv.service, msg.srv.instance, |
| 2294 | msg.srv.node_id, msg.srv.port_id); |
Karthikeyan Ramasubramanian | 5c568fb | 2013-01-10 17:09:13 -0700 | [diff] [blame] | 2295 | broadcast_ctl_msg(&msg); |
| 2296 | broadcast_ctl_msg_locally(&msg); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2297 | } |
Karthikeyan Ramasubramanian | 5c568fb | 2013-01-10 17:09:13 -0700 | [diff] [blame] | 2298 | |
| 2299 | /* |
| 2300 | * Server port could have been a client port earlier. |
| 2301 | * Send REMOVE_CLIENT message in either case. |
| 2302 | */ |
| 2303 | msg.cmd = IPC_ROUTER_CTRL_CMD_REMOVE_CLIENT; |
| 2304 | msg.cli.node_id = port_ptr->this_port.node_id; |
| 2305 | msg.cli.port_id = port_ptr->this_port.port_id; |
| 2306 | RR("x REMOVE_CLIENT id=%d:%08x\n", |
| 2307 | msg.cli.node_id, msg.cli.port_id); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2308 | broadcast_ctl_msg(&msg); |
| 2309 | broadcast_ctl_msg_locally(&msg); |
Karthikeyan Ramasubramanian | be9954b | 2012-06-13 12:59:54 -0600 | [diff] [blame] | 2310 | } else if (port_ptr->type == CONTROL_PORT) { |
| 2311 | mutex_lock(&control_ports_lock); |
| 2312 | list_del(&port_ptr->list); |
| 2313 | mutex_unlock(&control_ports_lock); |
Karthikeyan Ramasubramanian | f7a4b6e | 2013-01-16 09:00:28 -0700 | [diff] [blame] | 2314 | } else if (port_ptr->type == IRSC_PORT) { |
| 2315 | mutex_lock(&local_ports_lock); |
| 2316 | list_del(&port_ptr->list); |
| 2317 | mutex_unlock(&local_ports_lock); |
| 2318 | signal_irsc_completion(); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2319 | } |
| 2320 | |
| 2321 | mutex_lock(&port_ptr->port_rx_q_lock); |
| 2322 | list_for_each_entry_safe(pkt, temp_pkt, &port_ptr->port_rx_q, list) { |
| 2323 | list_del(&pkt->list); |
| 2324 | release_pkt(pkt); |
| 2325 | } |
| 2326 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 2327 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2328 | if (port_ptr->type == SERVER_PORT) { |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2329 | mutex_lock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2330 | server = msm_ipc_router_lookup_server( |
| 2331 | port_ptr->port_name.service, |
| 2332 | port_ptr->port_name.instance, |
| 2333 | port_ptr->this_port.node_id, |
| 2334 | port_ptr->this_port.port_id); |
| 2335 | if (server) |
| 2336 | msm_ipc_router_destroy_server(server, |
| 2337 | port_ptr->this_port.node_id, |
| 2338 | port_ptr->this_port.port_id); |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2339 | mutex_unlock(&server_list_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2340 | } |
| 2341 | |
Karthikeyan Ramasubramanian | dd8c3b5 | 2011-11-30 16:26:12 -0700 | [diff] [blame] | 2342 | wake_lock_destroy(&port_ptr->port_rx_wake_lock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2343 | kfree(port_ptr); |
| 2344 | return 0; |
| 2345 | } |
| 2346 | |
| 2347 | int msm_ipc_router_get_curr_pkt_size(struct msm_ipc_port *port_ptr) |
| 2348 | { |
| 2349 | struct rr_packet *pkt; |
| 2350 | int rc = 0; |
| 2351 | |
| 2352 | if (!port_ptr) |
| 2353 | return -EINVAL; |
| 2354 | |
| 2355 | mutex_lock(&port_ptr->port_rx_q_lock); |
| 2356 | if (!list_empty(&port_ptr->port_rx_q)) { |
| 2357 | pkt = list_first_entry(&port_ptr->port_rx_q, |
| 2358 | struct rr_packet, list); |
| 2359 | rc = pkt->length; |
| 2360 | } |
| 2361 | mutex_unlock(&port_ptr->port_rx_q_lock); |
| 2362 | |
| 2363 | return rc; |
| 2364 | } |
| 2365 | |
| 2366 | int msm_ipc_router_bind_control_port(struct msm_ipc_port *port_ptr) |
| 2367 | { |
| 2368 | if (!port_ptr) |
| 2369 | return -EINVAL; |
| 2370 | |
| 2371 | mutex_lock(&local_ports_lock); |
| 2372 | list_del(&port_ptr->list); |
| 2373 | mutex_unlock(&local_ports_lock); |
| 2374 | port_ptr->type = CONTROL_PORT; |
| 2375 | mutex_lock(&control_ports_lock); |
| 2376 | list_add_tail(&port_ptr->list, &control_ports); |
| 2377 | mutex_unlock(&control_ports_lock); |
| 2378 | |
| 2379 | return 0; |
| 2380 | } |
| 2381 | |
| 2382 | int msm_ipc_router_lookup_server_name(struct msm_ipc_port_name *srv_name, |
Karthikeyan Ramasubramanian | dfde01b | 2012-06-12 14:25:13 -0600 | [diff] [blame] | 2383 | struct msm_ipc_server_info *srv_info, |
Karthikeyan Ramasubramanian | cc450c9 | 2011-07-27 14:38:15 -0600 | [diff] [blame] | 2384 | int num_entries_in_array, |
| 2385 | uint32_t lookup_mask) |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2386 | { |
| 2387 | struct msm_ipc_server *server; |
| 2388 | struct msm_ipc_server_port *server_port; |
Karthikeyan Ramasubramanian | cc450c9 | 2011-07-27 14:38:15 -0600 | [diff] [blame] | 2389 | int key, i = 0; /*num_entries_found*/ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2390 | |
| 2391 | if (!srv_name) { |
| 2392 | pr_err("%s: Invalid srv_name\n", __func__); |
| 2393 | return -EINVAL; |
| 2394 | } |
| 2395 | |
Karthikeyan Ramasubramanian | dfde01b | 2012-06-12 14:25:13 -0600 | [diff] [blame] | 2396 | if (num_entries_in_array && !srv_info) { |
| 2397 | pr_err("%s: srv_info NULL\n", __func__); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2398 | return -EINVAL; |
| 2399 | } |
| 2400 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2401 | mutex_lock(&server_list_lock); |
Karthikeyan Ramasubramanian | cc450c9 | 2011-07-27 14:38:15 -0600 | [diff] [blame] | 2402 | if (!lookup_mask) |
| 2403 | lookup_mask = 0xFFFFFFFF; |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2404 | key = (srv_name->service & (SRV_HASH_SIZE - 1)); |
| 2405 | list_for_each_entry(server, &server_list[key], list) { |
| 2406 | if ((server->name.service != srv_name->service) || |
| 2407 | ((server->name.instance & lookup_mask) != |
| 2408 | srv_name->instance)) |
| 2409 | continue; |
Karthikeyan Ramasubramanian | cc450c9 | 2011-07-27 14:38:15 -0600 | [diff] [blame] | 2410 | |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2411 | list_for_each_entry(server_port, |
| 2412 | &server->server_port_list, list) { |
| 2413 | if (i < num_entries_in_array) { |
| 2414 | srv_info[i].node_id = |
Karthikeyan Ramasubramanian | cc450c9 | 2011-07-27 14:38:15 -0600 | [diff] [blame] | 2415 | server_port->server_addr.node_id; |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2416 | srv_info[i].port_id = |
Karthikeyan Ramasubramanian | cc450c9 | 2011-07-27 14:38:15 -0600 | [diff] [blame] | 2417 | server_port->server_addr.port_id; |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2418 | srv_info[i].service = server->name.service; |
| 2419 | srv_info[i].instance = server->name.instance; |
Karthikeyan Ramasubramanian | cc450c9 | 2011-07-27 14:38:15 -0600 | [diff] [blame] | 2420 | } |
Karthikeyan Ramasubramanian | bb8306b | 2012-10-25 15:40:45 -0600 | [diff] [blame] | 2421 | i++; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2422 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2423 | } |
| 2424 | mutex_unlock(&server_list_lock); |
| 2425 | |
| 2426 | return i; |
| 2427 | } |
| 2428 | |
| 2429 | int msm_ipc_router_close(void) |
| 2430 | { |
| 2431 | struct msm_ipc_router_xprt_info *xprt_info, *tmp_xprt_info; |
| 2432 | |
| 2433 | mutex_lock(&xprt_info_list_lock); |
| 2434 | list_for_each_entry_safe(xprt_info, tmp_xprt_info, |
| 2435 | &xprt_info_list, list) { |
Karthikeyan Ramasubramanian | 8cec592 | 2012-02-16 17:41:58 -0700 | [diff] [blame] | 2436 | xprt_info->xprt->close(xprt_info->xprt); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2437 | list_del(&xprt_info->list); |
| 2438 | kfree(xprt_info); |
| 2439 | } |
| 2440 | mutex_unlock(&xprt_info_list_lock); |
| 2441 | return 0; |
| 2442 | } |
| 2443 | |
| 2444 | #if defined(CONFIG_DEBUG_FS) |
| 2445 | static int dump_routing_table(char *buf, int max) |
| 2446 | { |
| 2447 | int i = 0, j; |
| 2448 | struct msm_ipc_routing_table_entry *rt_entry; |
| 2449 | |
| 2450 | for (j = 0; j < RT_HASH_SIZE; j++) { |
| 2451 | mutex_lock(&routing_table_lock); |
| 2452 | list_for_each_entry(rt_entry, &routing_table[j], list) { |
| 2453 | mutex_lock(&rt_entry->lock); |
| 2454 | i += scnprintf(buf + i, max - i, |
| 2455 | "Node Id: 0x%08x\n", rt_entry->node_id); |
Karthikeyan Ramasubramanian | bddeec7 | 2012-09-10 16:10:24 -0600 | [diff] [blame] | 2456 | if (rt_entry->node_id == IPC_ROUTER_NID_LOCAL) { |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2457 | i += scnprintf(buf + i, max - i, |
| 2458 | "XPRT Name: Loopback\n"); |
| 2459 | i += scnprintf(buf + i, max - i, |
| 2460 | "Next Hop: %d\n", rt_entry->node_id); |
| 2461 | } else { |
| 2462 | i += scnprintf(buf + i, max - i, |
| 2463 | "XPRT Name: %s\n", |
| 2464 | rt_entry->xprt_info->xprt->name); |
| 2465 | i += scnprintf(buf + i, max - i, |
| 2466 | "Next Hop: 0x%08x\n", |
| 2467 | rt_entry->xprt_info->remote_node_id); |
| 2468 | } |
| 2469 | i += scnprintf(buf + i, max - i, "\n"); |
| 2470 | mutex_unlock(&rt_entry->lock); |
| 2471 | } |
| 2472 | mutex_unlock(&routing_table_lock); |
| 2473 | } |
| 2474 | |
| 2475 | return i; |
| 2476 | } |
| 2477 | |
| 2478 | static int dump_xprt_info(char *buf, int max) |
| 2479 | { |
| 2480 | int i = 0; |
| 2481 | struct msm_ipc_router_xprt_info *xprt_info; |
| 2482 | |
| 2483 | mutex_lock(&xprt_info_list_lock); |
| 2484 | list_for_each_entry(xprt_info, &xprt_info_list, list) { |
| 2485 | i += scnprintf(buf + i, max - i, "XPRT Name: %s\n", |
| 2486 | xprt_info->xprt->name); |
| 2487 | i += scnprintf(buf + i, max - i, "Link Id: %d\n", |
| 2488 | xprt_info->xprt->link_id); |
| 2489 | i += scnprintf(buf + i, max - i, "Initialized: %s\n", |
| 2490 | (xprt_info->initialized ? "Y" : "N")); |
| 2491 | i += scnprintf(buf + i, max - i, "Remote Node Id: 0x%08x\n", |
| 2492 | xprt_info->remote_node_id); |
| 2493 | i += scnprintf(buf + i, max - i, "\n"); |
| 2494 | } |
| 2495 | mutex_unlock(&xprt_info_list_lock); |
| 2496 | |
| 2497 | return i; |
| 2498 | } |
| 2499 | |
| 2500 | static int dump_servers(char *buf, int max) |
| 2501 | { |
| 2502 | int i = 0, j; |
| 2503 | struct msm_ipc_server *server; |
| 2504 | struct msm_ipc_server_port *server_port; |
| 2505 | |
| 2506 | mutex_lock(&server_list_lock); |
| 2507 | for (j = 0; j < SRV_HASH_SIZE; j++) { |
| 2508 | list_for_each_entry(server, &server_list[j], list) { |
| 2509 | list_for_each_entry(server_port, |
| 2510 | &server->server_port_list, |
| 2511 | list) { |
| 2512 | i += scnprintf(buf + i, max - i, "Service: " |
| 2513 | "0x%08x\n", server->name.service); |
| 2514 | i += scnprintf(buf + i, max - i, "Instance: " |
| 2515 | "0x%08x\n", server->name.instance); |
| 2516 | i += scnprintf(buf + i, max - i, |
| 2517 | "Node_id: 0x%08x\n", |
| 2518 | server_port->server_addr.node_id); |
| 2519 | i += scnprintf(buf + i, max - i, |
| 2520 | "Port_id: 0x%08x\n", |
| 2521 | server_port->server_addr.port_id); |
| 2522 | i += scnprintf(buf + i, max - i, "\n"); |
| 2523 | } |
| 2524 | } |
| 2525 | } |
| 2526 | mutex_unlock(&server_list_lock); |
| 2527 | |
| 2528 | return i; |
| 2529 | } |
| 2530 | |
| 2531 | static int dump_remote_ports(char *buf, int max) |
| 2532 | { |
| 2533 | int i = 0, j, k; |
| 2534 | struct msm_ipc_router_remote_port *rport_ptr; |
| 2535 | struct msm_ipc_routing_table_entry *rt_entry; |
| 2536 | |
| 2537 | for (j = 0; j < RT_HASH_SIZE; j++) { |
| 2538 | mutex_lock(&routing_table_lock); |
| 2539 | list_for_each_entry(rt_entry, &routing_table[j], list) { |
| 2540 | mutex_lock(&rt_entry->lock); |
| 2541 | for (k = 0; k < RP_HASH_SIZE; k++) { |
| 2542 | list_for_each_entry(rport_ptr, |
| 2543 | &rt_entry->remote_port_list[k], |
| 2544 | list) { |
| 2545 | i += scnprintf(buf + i, max - i, |
| 2546 | "Node_id: 0x%08x\n", |
| 2547 | rport_ptr->node_id); |
| 2548 | i += scnprintf(buf + i, max - i, |
| 2549 | "Port_id: 0x%08x\n", |
| 2550 | rport_ptr->port_id); |
| 2551 | i += scnprintf(buf + i, max - i, |
| 2552 | "Quota_cnt: %d\n", |
| 2553 | rport_ptr->tx_quota_cnt); |
| 2554 | i += scnprintf(buf + i, max - i, "\n"); |
| 2555 | } |
| 2556 | } |
| 2557 | mutex_unlock(&rt_entry->lock); |
| 2558 | } |
| 2559 | mutex_unlock(&routing_table_lock); |
| 2560 | } |
| 2561 | |
| 2562 | return i; |
| 2563 | } |
| 2564 | |
| 2565 | static int dump_control_ports(char *buf, int max) |
| 2566 | { |
| 2567 | int i = 0; |
| 2568 | struct msm_ipc_port *port_ptr; |
| 2569 | |
| 2570 | mutex_lock(&control_ports_lock); |
| 2571 | list_for_each_entry(port_ptr, &control_ports, list) { |
| 2572 | i += scnprintf(buf + i, max - i, "Node_id: 0x%08x\n", |
| 2573 | port_ptr->this_port.node_id); |
| 2574 | i += scnprintf(buf + i, max - i, "Port_id: 0x%08x\n", |
| 2575 | port_ptr->this_port.port_id); |
| 2576 | i += scnprintf(buf + i, max - i, "\n"); |
| 2577 | } |
| 2578 | mutex_unlock(&control_ports_lock); |
| 2579 | |
| 2580 | return i; |
| 2581 | } |
| 2582 | |
| 2583 | static int dump_local_ports(char *buf, int max) |
| 2584 | { |
| 2585 | int i = 0, j; |
| 2586 | unsigned long flags; |
| 2587 | struct msm_ipc_port *port_ptr; |
| 2588 | |
| 2589 | mutex_lock(&local_ports_lock); |
| 2590 | for (j = 0; j < LP_HASH_SIZE; j++) { |
| 2591 | list_for_each_entry(port_ptr, &local_ports[j], list) { |
| 2592 | spin_lock_irqsave(&port_ptr->port_lock, flags); |
| 2593 | i += scnprintf(buf + i, max - i, "Node_id: 0x%08x\n", |
| 2594 | port_ptr->this_port.node_id); |
| 2595 | i += scnprintf(buf + i, max - i, "Port_id: 0x%08x\n", |
| 2596 | port_ptr->this_port.port_id); |
| 2597 | i += scnprintf(buf + i, max - i, "# pkts tx'd %d\n", |
| 2598 | port_ptr->num_tx); |
| 2599 | i += scnprintf(buf + i, max - i, "# pkts rx'd %d\n", |
| 2600 | port_ptr->num_rx); |
| 2601 | i += scnprintf(buf + i, max - i, "# bytes tx'd %ld\n", |
| 2602 | port_ptr->num_tx_bytes); |
| 2603 | i += scnprintf(buf + i, max - i, "# bytes rx'd %ld\n", |
| 2604 | port_ptr->num_rx_bytes); |
| 2605 | spin_unlock_irqrestore(&port_ptr->port_lock, flags); |
| 2606 | i += scnprintf(buf + i, max - i, "\n"); |
| 2607 | } |
| 2608 | } |
| 2609 | mutex_unlock(&local_ports_lock); |
| 2610 | |
| 2611 | return i; |
| 2612 | } |
| 2613 | |
| 2614 | #define DEBUG_BUFMAX 4096 |
| 2615 | static char debug_buffer[DEBUG_BUFMAX]; |
| 2616 | |
| 2617 | static ssize_t debug_read(struct file *file, char __user *buf, |
| 2618 | size_t count, loff_t *ppos) |
| 2619 | { |
| 2620 | int (*fill)(char *buf, int max) = file->private_data; |
| 2621 | int bsize = fill(debug_buffer, DEBUG_BUFMAX); |
| 2622 | return simple_read_from_buffer(buf, count, ppos, debug_buffer, bsize); |
| 2623 | } |
| 2624 | |
| 2625 | static int debug_open(struct inode *inode, struct file *file) |
| 2626 | { |
| 2627 | file->private_data = inode->i_private; |
| 2628 | return 0; |
| 2629 | } |
| 2630 | |
| 2631 | static const struct file_operations debug_ops = { |
| 2632 | .read = debug_read, |
| 2633 | .open = debug_open, |
| 2634 | }; |
| 2635 | |
| 2636 | static void debug_create(const char *name, mode_t mode, |
| 2637 | struct dentry *dent, |
| 2638 | int (*fill)(char *buf, int max)) |
| 2639 | { |
| 2640 | debugfs_create_file(name, mode, dent, fill, &debug_ops); |
| 2641 | } |
| 2642 | |
| 2643 | static void debugfs_init(void) |
| 2644 | { |
| 2645 | struct dentry *dent; |
| 2646 | |
| 2647 | dent = debugfs_create_dir("msm_ipc_router", 0); |
| 2648 | if (IS_ERR(dent)) |
| 2649 | return; |
| 2650 | |
| 2651 | debug_create("dump_local_ports", 0444, dent, |
| 2652 | dump_local_ports); |
| 2653 | debug_create("dump_remote_ports", 0444, dent, |
| 2654 | dump_remote_ports); |
| 2655 | debug_create("dump_control_ports", 0444, dent, |
| 2656 | dump_control_ports); |
| 2657 | debug_create("dump_servers", 0444, dent, |
| 2658 | dump_servers); |
| 2659 | debug_create("dump_xprt_info", 0444, dent, |
| 2660 | dump_xprt_info); |
| 2661 | debug_create("dump_routing_table", 0444, dent, |
| 2662 | dump_routing_table); |
| 2663 | } |
| 2664 | |
| 2665 | #else |
| 2666 | static void debugfs_init(void) {} |
| 2667 | #endif |
| 2668 | |
| 2669 | static int msm_ipc_router_add_xprt(struct msm_ipc_router_xprt *xprt) |
| 2670 | { |
| 2671 | struct msm_ipc_router_xprt_info *xprt_info; |
| 2672 | struct msm_ipc_routing_table_entry *rt_entry; |
| 2673 | |
| 2674 | xprt_info = kmalloc(sizeof(struct msm_ipc_router_xprt_info), |
| 2675 | GFP_KERNEL); |
| 2676 | if (!xprt_info) |
| 2677 | return -ENOMEM; |
| 2678 | |
| 2679 | xprt_info->xprt = xprt; |
| 2680 | xprt_info->initialized = 0; |
| 2681 | xprt_info->remote_node_id = -1; |
| 2682 | INIT_LIST_HEAD(&xprt_info->pkt_list); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2683 | mutex_init(&xprt_info->rx_lock); |
| 2684 | mutex_init(&xprt_info->tx_lock); |
| 2685 | wake_lock_init(&xprt_info->wakelock, |
| 2686 | WAKE_LOCK_SUSPEND, xprt->name); |
| 2687 | xprt_info->need_len = 0; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2688 | xprt_info->abort_data_read = 0; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2689 | INIT_WORK(&xprt_info->read_data, do_read_data); |
| 2690 | INIT_LIST_HEAD(&xprt_info->list); |
| 2691 | |
| 2692 | xprt_info->workqueue = create_singlethread_workqueue(xprt->name); |
| 2693 | if (!xprt_info->workqueue) { |
| 2694 | kfree(xprt_info); |
| 2695 | return -ENOMEM; |
| 2696 | } |
| 2697 | |
| 2698 | if (!strcmp(xprt->name, "msm_ipc_router_loopback_xprt")) { |
| 2699 | xprt_info->remote_node_id = IPC_ROUTER_NID_LOCAL; |
| 2700 | xprt_info->initialized = 1; |
| 2701 | } |
| 2702 | |
| 2703 | mutex_lock(&xprt_info_list_lock); |
| 2704 | list_add_tail(&xprt_info->list, &xprt_info_list); |
| 2705 | mutex_unlock(&xprt_info_list_lock); |
| 2706 | |
| 2707 | mutex_lock(&routing_table_lock); |
| 2708 | if (!routing_table_inited) { |
| 2709 | init_routing_table(); |
| 2710 | rt_entry = alloc_routing_table_entry(IPC_ROUTER_NID_LOCAL); |
| 2711 | add_routing_table_entry(rt_entry); |
| 2712 | routing_table_inited = 1; |
| 2713 | } |
| 2714 | mutex_unlock(&routing_table_lock); |
| 2715 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2716 | xprt->priv = xprt_info; |
| 2717 | |
| 2718 | return 0; |
| 2719 | } |
| 2720 | |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2721 | static void msm_ipc_router_remove_xprt(struct msm_ipc_router_xprt *xprt) |
| 2722 | { |
| 2723 | struct msm_ipc_router_xprt_info *xprt_info; |
| 2724 | |
| 2725 | if (xprt && xprt->priv) { |
| 2726 | xprt_info = xprt->priv; |
| 2727 | |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 2728 | mutex_lock(&xprt_info->rx_lock); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2729 | xprt_info->abort_data_read = 1; |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 2730 | mutex_unlock(&xprt_info->rx_lock); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2731 | |
| 2732 | mutex_lock(&xprt_info_list_lock); |
| 2733 | list_del(&xprt_info->list); |
| 2734 | mutex_unlock(&xprt_info_list_lock); |
| 2735 | |
| 2736 | flush_workqueue(xprt_info->workqueue); |
| 2737 | destroy_workqueue(xprt_info->workqueue); |
| 2738 | wake_lock_destroy(&xprt_info->wakelock); |
| 2739 | |
| 2740 | xprt->priv = 0; |
| 2741 | kfree(xprt_info); |
| 2742 | } |
| 2743 | } |
| 2744 | |
| 2745 | |
| 2746 | struct msm_ipc_router_xprt_work { |
| 2747 | struct msm_ipc_router_xprt *xprt; |
| 2748 | struct work_struct work; |
| 2749 | }; |
| 2750 | |
| 2751 | static void xprt_open_worker(struct work_struct *work) |
| 2752 | { |
| 2753 | struct msm_ipc_router_xprt_work *xprt_work = |
| 2754 | container_of(work, struct msm_ipc_router_xprt_work, work); |
| 2755 | |
| 2756 | msm_ipc_router_add_xprt(xprt_work->xprt); |
| 2757 | kfree(xprt_work); |
| 2758 | } |
| 2759 | |
| 2760 | static void xprt_close_worker(struct work_struct *work) |
| 2761 | { |
| 2762 | struct msm_ipc_router_xprt_work *xprt_work = |
| 2763 | container_of(work, struct msm_ipc_router_xprt_work, work); |
| 2764 | |
| 2765 | modem_reset_cleanup(xprt_work->xprt->priv); |
| 2766 | msm_ipc_router_remove_xprt(xprt_work->xprt); |
| 2767 | |
| 2768 | if (atomic_dec_return(&pending_close_count) == 0) |
| 2769 | wake_up(&subsystem_restart_wait); |
| 2770 | |
| 2771 | kfree(xprt_work); |
| 2772 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2773 | |
| 2774 | void msm_ipc_router_xprt_notify(struct msm_ipc_router_xprt *xprt, |
| 2775 | unsigned event, |
| 2776 | void *data) |
| 2777 | { |
| 2778 | struct msm_ipc_router_xprt_info *xprt_info = xprt->priv; |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2779 | struct msm_ipc_router_xprt_work *xprt_work; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2780 | struct rr_packet *pkt; |
Karthikeyan Ramasubramanian | 4af9f7c | 2011-09-30 15:55:18 -0600 | [diff] [blame] | 2781 | unsigned long ret; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2782 | |
Karthikeyan Ramasubramanian | 4af9f7c | 2011-09-30 15:55:18 -0600 | [diff] [blame] | 2783 | if (!msm_ipc_router_workqueue) { |
| 2784 | ret = wait_for_completion_timeout(&msm_ipc_local_router_up, |
| 2785 | IPC_ROUTER_INIT_TIMEOUT); |
| 2786 | if (!ret || !msm_ipc_router_workqueue) { |
| 2787 | pr_err("%s: IPC Router not initialized\n", __func__); |
| 2788 | return; |
| 2789 | } |
| 2790 | } |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2791 | |
| 2792 | switch (event) { |
| 2793 | case IPC_ROUTER_XPRT_EVENT_OPEN: |
| 2794 | D("open event for '%s'\n", xprt->name); |
| 2795 | xprt_work = kmalloc(sizeof(struct msm_ipc_router_xprt_work), |
| 2796 | GFP_ATOMIC); |
| 2797 | xprt_work->xprt = xprt; |
| 2798 | INIT_WORK(&xprt_work->work, xprt_open_worker); |
| 2799 | queue_work(msm_ipc_router_workqueue, &xprt_work->work); |
| 2800 | break; |
| 2801 | |
| 2802 | case IPC_ROUTER_XPRT_EVENT_CLOSE: |
| 2803 | D("close event for '%s'\n", xprt->name); |
| 2804 | atomic_inc(&pending_close_count); |
| 2805 | xprt_work = kmalloc(sizeof(struct msm_ipc_router_xprt_work), |
| 2806 | GFP_ATOMIC); |
| 2807 | xprt_work->xprt = xprt; |
| 2808 | INIT_WORK(&xprt_work->work, xprt_close_worker); |
| 2809 | queue_work(msm_ipc_router_workqueue, &xprt_work->work); |
| 2810 | break; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2811 | } |
| 2812 | |
| 2813 | if (!data) |
| 2814 | return; |
| 2815 | |
| 2816 | while (!xprt_info) { |
| 2817 | msleep(100); |
| 2818 | xprt_info = xprt->priv; |
| 2819 | } |
| 2820 | |
| 2821 | pkt = clone_pkt((struct rr_packet *)data); |
| 2822 | if (!pkt) |
| 2823 | return; |
| 2824 | |
| 2825 | mutex_lock(&xprt_info->rx_lock); |
| 2826 | list_add_tail(&pkt->list, &xprt_info->pkt_list); |
| 2827 | wake_lock(&xprt_info->wakelock); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2828 | mutex_unlock(&xprt_info->rx_lock); |
Karthikeyan Ramasubramanian | 872ecd8 | 2012-07-25 11:07:48 -0600 | [diff] [blame] | 2829 | queue_work(xprt_info->workqueue, &xprt_info->read_data); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2830 | } |
| 2831 | |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2832 | static int modem_restart_notifier_cb(struct notifier_block *this, |
| 2833 | unsigned long code, |
| 2834 | void *data); |
| 2835 | static struct notifier_block msm_ipc_router_nb = { |
| 2836 | .notifier_call = modem_restart_notifier_cb, |
| 2837 | }; |
| 2838 | |
| 2839 | static int modem_restart_notifier_cb(struct notifier_block *this, |
| 2840 | unsigned long code, |
| 2841 | void *data) |
| 2842 | { |
| 2843 | switch (code) { |
| 2844 | case SUBSYS_BEFORE_SHUTDOWN: |
| 2845 | D("%s: SUBSYS_BEFORE_SHUTDOWN\n", __func__); |
| 2846 | break; |
| 2847 | |
| 2848 | case SUBSYS_BEFORE_POWERUP: |
| 2849 | D("%s: waiting for RPC restart to complete\n", __func__); |
| 2850 | wait_event(subsystem_restart_wait, |
| 2851 | atomic_read(&pending_close_count) == 0); |
| 2852 | D("%s: finished restart wait\n", __func__); |
| 2853 | break; |
| 2854 | |
| 2855 | default: |
| 2856 | break; |
| 2857 | } |
| 2858 | |
| 2859 | return NOTIFY_DONE; |
| 2860 | } |
| 2861 | |
| 2862 | static void *restart_notifier_handle; |
| 2863 | static __init int msm_ipc_router_modem_restart_late_init(void) |
| 2864 | { |
| 2865 | restart_notifier_handle = subsys_notif_register_notifier("modem", |
| 2866 | &msm_ipc_router_nb); |
| 2867 | return 0; |
| 2868 | } |
| 2869 | late_initcall(msm_ipc_router_modem_restart_late_init); |
| 2870 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2871 | static int __init msm_ipc_router_init(void) |
| 2872 | { |
| 2873 | int i, ret; |
| 2874 | struct msm_ipc_routing_table_entry *rt_entry; |
| 2875 | |
| 2876 | msm_ipc_router_debug_mask |= SMEM_LOG; |
Karthikeyan Ramasubramanian | 2bfe8ec | 2013-03-22 10:47:20 -0600 | [diff] [blame] | 2877 | ipc_rtr_log_ctxt = ipc_log_context_create(IPC_RTR_LOG_PAGES, |
| 2878 | "ipc_router"); |
| 2879 | if (!ipc_rtr_log_ctxt) |
| 2880 | pr_err("%s: Unable to create IPC logging for IPC RTR", |
| 2881 | __func__); |
| 2882 | |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2883 | msm_ipc_router_workqueue = |
| 2884 | create_singlethread_workqueue("msm_ipc_router"); |
| 2885 | if (!msm_ipc_router_workqueue) |
| 2886 | return -ENOMEM; |
| 2887 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2888 | debugfs_init(); |
| 2889 | |
| 2890 | for (i = 0; i < SRV_HASH_SIZE; i++) |
| 2891 | INIT_LIST_HEAD(&server_list[i]); |
| 2892 | |
| 2893 | for (i = 0; i < LP_HASH_SIZE; i++) |
| 2894 | INIT_LIST_HEAD(&local_ports[i]); |
| 2895 | |
| 2896 | mutex_lock(&routing_table_lock); |
| 2897 | if (!routing_table_inited) { |
| 2898 | init_routing_table(); |
| 2899 | rt_entry = alloc_routing_table_entry(IPC_ROUTER_NID_LOCAL); |
| 2900 | add_routing_table_entry(rt_entry); |
| 2901 | routing_table_inited = 1; |
| 2902 | } |
| 2903 | mutex_unlock(&routing_table_lock); |
| 2904 | |
| 2905 | init_waitqueue_head(&newserver_wait); |
Karthikeyan Ramasubramanian | ff6fbae | 2011-06-09 11:13:19 -0600 | [diff] [blame] | 2906 | init_waitqueue_head(&subsystem_restart_wait); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2907 | ret = msm_ipc_router_init_sockets(); |
| 2908 | if (ret < 0) |
| 2909 | pr_err("%s: Init sockets failed\n", __func__); |
| 2910 | |
Karthikeyan Ramasubramanian | 5b502d364 | 2012-09-23 22:23:36 -0600 | [diff] [blame] | 2911 | ret = msm_ipc_router_security_init(); |
| 2912 | if (ret < 0) |
| 2913 | pr_err("%s: Security Init failed\n", __func__); |
| 2914 | |
Karthikeyan Ramasubramanian | 4af9f7c | 2011-09-30 15:55:18 -0600 | [diff] [blame] | 2915 | complete_all(&msm_ipc_local_router_up); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2916 | return ret; |
| 2917 | } |
| 2918 | |
| 2919 | module_init(msm_ipc_router_init); |
| 2920 | MODULE_DESCRIPTION("MSM IPC Router"); |
| 2921 | MODULE_LICENSE("GPL v2"); |