Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/port.c: TIPC port code |
| 3 | * |
Per Liden | 593a5f2 | 2006-01-11 19:14:19 +0100 | [diff] [blame] | 4 | * Copyright (c) 1992-2006, Ericsson AB |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 5 | * Copyright (c) 2004-2005, Wind River Systems |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 6 | * All rights reserved. |
| 7 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 8 | * Redistribution and use in source and binary forms, with or without |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 9 | * modification, are permitted provided that the following conditions are met: |
| 10 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 3. Neither the names of the copyright holders nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 19 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 20 | * Alternatively, this software may be distributed under the terms of the |
| 21 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 22 | * Software Foundation. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 34 | * POSSIBILITY OF SUCH DAMAGE. |
| 35 | */ |
| 36 | |
| 37 | #include "core.h" |
| 38 | #include "config.h" |
| 39 | #include "dbg.h" |
| 40 | #include "port.h" |
| 41 | #include "addr.h" |
| 42 | #include "link.h" |
| 43 | #include "node.h" |
| 44 | #include "port.h" |
| 45 | #include "name_table.h" |
| 46 | #include "user_reg.h" |
| 47 | #include "msg.h" |
| 48 | #include "bcast.h" |
| 49 | |
| 50 | /* Connection management: */ |
| 51 | #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ |
| 52 | #define CONFIRMED 0 |
| 53 | #define PROBING 1 |
| 54 | |
| 55 | #define MAX_REJECT_SIZE 1024 |
| 56 | |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 57 | static struct sk_buff *msg_queue_head = NULL; |
| 58 | static struct sk_buff *msg_queue_tail = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 59 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 60 | spinlock_t tipc_port_list_lock = SPIN_LOCK_UNLOCKED; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 61 | static spinlock_t queue_lock = SPIN_LOCK_UNLOCKED; |
| 62 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 63 | static LIST_HEAD(ports); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 64 | static void port_handle_node_down(unsigned long ref); |
| 65 | static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err); |
| 66 | static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err); |
| 67 | static void port_timeout(unsigned long ref); |
| 68 | |
| 69 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 70 | static u32 port_peernode(struct port *p_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 71 | { |
| 72 | return msg_destnode(&p_ptr->publ.phdr); |
| 73 | } |
| 74 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 75 | static u32 port_peerport(struct port *p_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 76 | { |
| 77 | return msg_destport(&p_ptr->publ.phdr); |
| 78 | } |
| 79 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 80 | static u32 port_out_seqno(struct port *p_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 81 | { |
| 82 | return msg_transp_seqno(&p_ptr->publ.phdr); |
| 83 | } |
| 84 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 85 | static void port_incr_out_seqno(struct port *p_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 86 | { |
| 87 | struct tipc_msg *m = &p_ptr->publ.phdr; |
| 88 | |
| 89 | if (likely(!msg_routed(m))) |
| 90 | return; |
| 91 | msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1)); |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * tipc_multicast - send a multicast message to local and remote destinations |
| 96 | */ |
| 97 | |
| 98 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain, |
| 99 | u32 num_sect, struct iovec const *msg_sect) |
| 100 | { |
| 101 | struct tipc_msg *hdr; |
| 102 | struct sk_buff *buf; |
| 103 | struct sk_buff *ibuf = NULL; |
| 104 | struct port_list dports = {0, NULL, }; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 105 | struct port *oport = tipc_port_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 106 | int ext_targets; |
| 107 | int res; |
| 108 | |
| 109 | if (unlikely(!oport)) |
| 110 | return -EINVAL; |
| 111 | |
| 112 | /* Create multicast message */ |
| 113 | |
| 114 | hdr = &oport->publ.phdr; |
| 115 | msg_set_type(hdr, TIPC_MCAST_MSG); |
| 116 | msg_set_nametype(hdr, seq->type); |
| 117 | msg_set_namelower(hdr, seq->lower); |
| 118 | msg_set_nameupper(hdr, seq->upper); |
| 119 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); |
| 120 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
| 121 | !oport->user_port, &buf); |
| 122 | if (unlikely(!buf)) |
| 123 | return res; |
| 124 | |
| 125 | /* Figure out where to send multicast message */ |
| 126 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 127 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
| 128 | TIPC_NODE_SCOPE, &dports); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 129 | |
| 130 | /* Send message to destinations (duplicate it only if necessary) */ |
| 131 | |
| 132 | if (ext_targets) { |
| 133 | if (dports.count != 0) { |
| 134 | ibuf = skb_copy(buf, GFP_ATOMIC); |
| 135 | if (ibuf == NULL) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 136 | tipc_port_list_free(&dports); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 137 | buf_discard(buf); |
| 138 | return -ENOMEM; |
| 139 | } |
| 140 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 141 | res = tipc_bclink_send_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 142 | if ((res < 0) && (dports.count != 0)) { |
| 143 | buf_discard(ibuf); |
| 144 | } |
| 145 | } else { |
| 146 | ibuf = buf; |
| 147 | } |
| 148 | |
| 149 | if (res >= 0) { |
| 150 | if (ibuf) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 151 | tipc_port_recv_mcast(ibuf, &dports); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 152 | } else { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 153 | tipc_port_list_free(&dports); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 154 | } |
| 155 | return res; |
| 156 | } |
| 157 | |
| 158 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 159 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 160 | * |
| 161 | * If there is no port list, perform a lookup to create one |
| 162 | */ |
| 163 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 164 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 165 | { |
| 166 | struct tipc_msg* msg; |
| 167 | struct port_list dports = {0, NULL, }; |
| 168 | struct port_list *item = dp; |
| 169 | int cnt = 0; |
| 170 | |
| 171 | assert(buf); |
| 172 | msg = buf_msg(buf); |
| 173 | |
| 174 | /* Create destination port list, if one wasn't supplied */ |
| 175 | |
| 176 | if (dp == NULL) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 177 | tipc_nametbl_mc_translate(msg_nametype(msg), |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 178 | msg_namelower(msg), |
| 179 | msg_nameupper(msg), |
| 180 | TIPC_CLUSTER_SCOPE, |
| 181 | &dports); |
| 182 | item = dp = &dports; |
| 183 | } |
| 184 | |
| 185 | /* Deliver a copy of message to each destination port */ |
| 186 | |
| 187 | if (dp->count != 0) { |
| 188 | if (dp->count == 1) { |
| 189 | msg_set_destport(msg, dp->ports[0]); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 190 | tipc_port_recv_msg(buf); |
| 191 | tipc_port_list_free(dp); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 192 | return; |
| 193 | } |
| 194 | for (; cnt < dp->count; cnt++) { |
| 195 | int index = cnt % PLSIZE; |
| 196 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); |
| 197 | |
| 198 | if (b == NULL) { |
| 199 | warn("Buffer allocation failure\n"); |
| 200 | msg_dbg(msg, "LOST:"); |
| 201 | goto exit; |
| 202 | } |
| 203 | if ((index == 0) && (cnt != 0)) { |
| 204 | item = item->next; |
| 205 | } |
| 206 | msg_set_destport(buf_msg(b),item->ports[index]); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 207 | tipc_port_recv_msg(b); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 208 | } |
| 209 | } |
| 210 | exit: |
| 211 | buf_discard(buf); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 212 | tipc_port_list_free(dp); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | /** |
| 216 | * tipc_createport_raw - create a native TIPC port |
| 217 | * |
| 218 | * Returns local port reference |
| 219 | */ |
| 220 | |
| 221 | u32 tipc_createport_raw(void *usr_handle, |
| 222 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
| 223 | void (*wakeup)(struct tipc_port *), |
| 224 | const u32 importance) |
| 225 | { |
| 226 | struct port *p_ptr; |
| 227 | struct tipc_msg *msg; |
| 228 | u32 ref; |
| 229 | |
| 230 | p_ptr = kmalloc(sizeof(*p_ptr), GFP_ATOMIC); |
| 231 | if (p_ptr == NULL) { |
| 232 | warn("Memory squeeze; failed to create port\n"); |
| 233 | return 0; |
| 234 | } |
| 235 | memset(p_ptr, 0, sizeof(*p_ptr)); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 236 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 237 | if (!ref) { |
| 238 | warn("Reference Table Exhausted\n"); |
| 239 | kfree(p_ptr); |
| 240 | return 0; |
| 241 | } |
| 242 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 243 | tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 244 | p_ptr->publ.ref = ref; |
| 245 | msg = &p_ptr->publ.phdr; |
| 246 | msg_init(msg, DATA_LOW, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE, 0); |
| 247 | msg_set_orignode(msg, tipc_own_addr); |
| 248 | msg_set_prevnode(msg, tipc_own_addr); |
| 249 | msg_set_origport(msg, ref); |
| 250 | msg_set_importance(msg,importance); |
| 251 | p_ptr->last_in_seqno = 41; |
| 252 | p_ptr->sent = 1; |
| 253 | p_ptr->publ.usr_handle = usr_handle; |
| 254 | INIT_LIST_HEAD(&p_ptr->wait_list); |
| 255 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 256 | p_ptr->congested_link = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 257 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
| 258 | p_ptr->dispatcher = dispatcher; |
| 259 | p_ptr->wakeup = wakeup; |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 260 | p_ptr->user_port = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 261 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 262 | spin_lock_bh(&tipc_port_list_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 263 | INIT_LIST_HEAD(&p_ptr->publications); |
| 264 | INIT_LIST_HEAD(&p_ptr->port_list); |
| 265 | list_add_tail(&p_ptr->port_list, &ports); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 266 | spin_unlock_bh(&tipc_port_list_lock); |
| 267 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 268 | return ref; |
| 269 | } |
| 270 | |
| 271 | int tipc_deleteport(u32 ref) |
| 272 | { |
| 273 | struct port *p_ptr; |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 274 | struct sk_buff *buf = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 275 | |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 276 | tipc_withdraw(ref, 0, NULL); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 277 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 278 | if (!p_ptr) |
| 279 | return -EINVAL; |
| 280 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 281 | tipc_ref_discard(ref); |
| 282 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 283 | |
| 284 | k_cancel_timer(&p_ptr->timer); |
| 285 | if (p_ptr->publ.connected) { |
| 286 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 287 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 288 | } |
| 289 | if (p_ptr->user_port) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 290 | tipc_reg_remove_port(p_ptr->user_port); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 291 | kfree(p_ptr->user_port); |
| 292 | } |
| 293 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 294 | spin_lock_bh(&tipc_port_list_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 295 | list_del(&p_ptr->port_list); |
| 296 | list_del(&p_ptr->wait_list); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 297 | spin_unlock_bh(&tipc_port_list_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 298 | k_term_timer(&p_ptr->timer); |
| 299 | kfree(p_ptr); |
| 300 | dbg("Deleted port %u\n", ref); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 301 | tipc_net_route_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 302 | return TIPC_OK; |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * tipc_get_port() - return port associated with 'ref' |
| 307 | * |
| 308 | * Note: Port is not locked. |
| 309 | */ |
| 310 | |
| 311 | struct tipc_port *tipc_get_port(const u32 ref) |
| 312 | { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 313 | return (struct tipc_port *)tipc_ref_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | /** |
| 317 | * tipc_get_handle - return user handle associated to port 'ref' |
| 318 | */ |
| 319 | |
| 320 | void *tipc_get_handle(const u32 ref) |
| 321 | { |
| 322 | struct port *p_ptr; |
| 323 | void * handle; |
| 324 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 325 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 326 | if (!p_ptr) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 327 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 328 | handle = p_ptr->publ.usr_handle; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 329 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 330 | return handle; |
| 331 | } |
| 332 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 333 | static int port_unreliable(struct port *p_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 334 | { |
| 335 | return msg_src_droppable(&p_ptr->publ.phdr); |
| 336 | } |
| 337 | |
| 338 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) |
| 339 | { |
| 340 | struct port *p_ptr; |
| 341 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 342 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 343 | if (!p_ptr) |
| 344 | return -EINVAL; |
| 345 | *isunreliable = port_unreliable(p_ptr); |
| 346 | spin_unlock_bh(p_ptr->publ.lock); |
| 347 | return TIPC_OK; |
| 348 | } |
| 349 | |
| 350 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) |
| 351 | { |
| 352 | struct port *p_ptr; |
| 353 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 354 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 355 | if (!p_ptr) |
| 356 | return -EINVAL; |
| 357 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 358 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 359 | return TIPC_OK; |
| 360 | } |
| 361 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 362 | static int port_unreturnable(struct port *p_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 363 | { |
| 364 | return msg_dest_droppable(&p_ptr->publ.phdr); |
| 365 | } |
| 366 | |
| 367 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) |
| 368 | { |
| 369 | struct port *p_ptr; |
| 370 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 371 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 372 | if (!p_ptr) |
| 373 | return -EINVAL; |
| 374 | *isunrejectable = port_unreturnable(p_ptr); |
| 375 | spin_unlock_bh(p_ptr->publ.lock); |
| 376 | return TIPC_OK; |
| 377 | } |
| 378 | |
| 379 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) |
| 380 | { |
| 381 | struct port *p_ptr; |
| 382 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 383 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 384 | if (!p_ptr) |
| 385 | return -EINVAL; |
| 386 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 387 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 388 | return TIPC_OK; |
| 389 | } |
| 390 | |
| 391 | /* |
| 392 | * port_build_proto_msg(): build a port level protocol |
| 393 | * or a connection abortion message. Called with |
| 394 | * tipc_port lock on. |
| 395 | */ |
| 396 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, |
| 397 | u32 origport, u32 orignode, |
| 398 | u32 usr, u32 type, u32 err, |
| 399 | u32 seqno, u32 ack) |
| 400 | { |
| 401 | struct sk_buff *buf; |
| 402 | struct tipc_msg *msg; |
| 403 | |
| 404 | buf = buf_acquire(LONG_H_SIZE); |
| 405 | if (buf) { |
| 406 | msg = buf_msg(buf); |
| 407 | msg_init(msg, usr, type, err, LONG_H_SIZE, destnode); |
| 408 | msg_set_destport(msg, destport); |
| 409 | msg_set_origport(msg, origport); |
| 410 | msg_set_destnode(msg, destnode); |
| 411 | msg_set_orignode(msg, orignode); |
| 412 | msg_set_transp_seqno(msg, seqno); |
| 413 | msg_set_msgcnt(msg, ack); |
| 414 | msg_dbg(msg, "PORT>SEND>:"); |
| 415 | } |
| 416 | return buf; |
| 417 | } |
| 418 | |
| 419 | int tipc_set_msg_option(struct tipc_port *tp_ptr, const char *opt, const u32 sz) |
| 420 | { |
| 421 | msg_expand(&tp_ptr->phdr, msg_destnode(&tp_ptr->phdr)); |
| 422 | msg_set_options(&tp_ptr->phdr, opt, sz); |
| 423 | return TIPC_OK; |
| 424 | } |
| 425 | |
| 426 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
| 427 | { |
| 428 | struct tipc_msg *msg = buf_msg(buf); |
| 429 | struct sk_buff *rbuf; |
| 430 | struct tipc_msg *rmsg; |
| 431 | int hdr_sz; |
| 432 | u32 imp = msg_importance(msg); |
| 433 | u32 data_sz = msg_data_sz(msg); |
| 434 | |
| 435 | if (data_sz > MAX_REJECT_SIZE) |
| 436 | data_sz = MAX_REJECT_SIZE; |
| 437 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) |
| 438 | imp++; |
| 439 | msg_dbg(msg, "port->rej: "); |
| 440 | |
| 441 | /* discard rejected message if it shouldn't be returned to sender */ |
| 442 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { |
| 443 | buf_discard(buf); |
| 444 | return data_sz; |
| 445 | } |
| 446 | |
| 447 | /* construct rejected message */ |
| 448 | if (msg_mcast(msg)) |
| 449 | hdr_sz = MCAST_H_SIZE; |
| 450 | else |
| 451 | hdr_sz = LONG_H_SIZE; |
| 452 | rbuf = buf_acquire(data_sz + hdr_sz); |
| 453 | if (rbuf == NULL) { |
| 454 | buf_discard(buf); |
| 455 | return data_sz; |
| 456 | } |
| 457 | rmsg = buf_msg(rbuf); |
| 458 | msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg)); |
| 459 | msg_set_destport(rmsg, msg_origport(msg)); |
| 460 | msg_set_prevnode(rmsg, tipc_own_addr); |
| 461 | msg_set_origport(rmsg, msg_destport(msg)); |
| 462 | if (msg_short(msg)) |
| 463 | msg_set_orignode(rmsg, tipc_own_addr); |
| 464 | else |
| 465 | msg_set_orignode(rmsg, msg_destnode(msg)); |
| 466 | msg_set_size(rmsg, data_sz + hdr_sz); |
| 467 | msg_set_nametype(rmsg, msg_nametype(msg)); |
| 468 | msg_set_nameinst(rmsg, msg_nameinst(msg)); |
| 469 | memcpy(rbuf->data + hdr_sz, msg_data(msg), data_sz); |
| 470 | |
| 471 | /* send self-abort message when rejecting on a connected port */ |
| 472 | if (msg_connected(msg)) { |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 473 | struct sk_buff *abuf = NULL; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 474 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 475 | |
| 476 | if (p_ptr) { |
| 477 | if (p_ptr->publ.connected) |
| 478 | abuf = port_build_self_abort_msg(p_ptr, err); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 479 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 480 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 481 | tipc_net_route_msg(abuf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | /* send rejected message */ |
| 485 | buf_discard(buf); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 486 | tipc_net_route_msg(rbuf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 487 | return data_sz; |
| 488 | } |
| 489 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 490 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
| 491 | struct iovec const *msg_sect, u32 num_sect, |
| 492 | int err) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 493 | { |
| 494 | struct sk_buff *buf; |
| 495 | int res; |
| 496 | |
| 497 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
| 498 | !p_ptr->user_port, &buf); |
| 499 | if (!buf) |
| 500 | return res; |
| 501 | |
| 502 | return tipc_reject_msg(buf, err); |
| 503 | } |
| 504 | |
| 505 | static void port_timeout(unsigned long ref) |
| 506 | { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 507 | struct port *p_ptr = tipc_port_lock(ref); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 508 | struct sk_buff *buf = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 509 | |
| 510 | if (!p_ptr || !p_ptr->publ.connected) |
| 511 | return; |
| 512 | |
| 513 | /* Last probe answered ? */ |
| 514 | if (p_ptr->probing_state == PROBING) { |
| 515 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
| 516 | } else { |
| 517 | buf = port_build_proto_msg(port_peerport(p_ptr), |
| 518 | port_peernode(p_ptr), |
| 519 | p_ptr->publ.ref, |
| 520 | tipc_own_addr, |
| 521 | CONN_MANAGER, |
| 522 | CONN_PROBE, |
| 523 | TIPC_OK, |
| 524 | port_out_seqno(p_ptr), |
| 525 | 0); |
| 526 | port_incr_out_seqno(p_ptr); |
| 527 | p_ptr->probing_state = PROBING; |
| 528 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
| 529 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 530 | tipc_port_unlock(p_ptr); |
| 531 | tipc_net_route_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 532 | } |
| 533 | |
| 534 | |
| 535 | static void port_handle_node_down(unsigned long ref) |
| 536 | { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 537 | struct port *p_ptr = tipc_port_lock(ref); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 538 | struct sk_buff* buf = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 539 | |
| 540 | if (!p_ptr) |
| 541 | return; |
| 542 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 543 | tipc_port_unlock(p_ptr); |
| 544 | tipc_net_route_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | |
| 548 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) |
| 549 | { |
| 550 | u32 imp = msg_importance(&p_ptr->publ.phdr); |
| 551 | |
| 552 | if (!p_ptr->publ.connected) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 553 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 554 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
| 555 | imp++; |
| 556 | return port_build_proto_msg(p_ptr->publ.ref, |
| 557 | tipc_own_addr, |
| 558 | port_peerport(p_ptr), |
| 559 | port_peernode(p_ptr), |
| 560 | imp, |
| 561 | TIPC_CONN_MSG, |
| 562 | err, |
| 563 | p_ptr->last_in_seqno + 1, |
| 564 | 0); |
| 565 | } |
| 566 | |
| 567 | |
| 568 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) |
| 569 | { |
| 570 | u32 imp = msg_importance(&p_ptr->publ.phdr); |
| 571 | |
| 572 | if (!p_ptr->publ.connected) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 573 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 574 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
| 575 | imp++; |
| 576 | return port_build_proto_msg(port_peerport(p_ptr), |
| 577 | port_peernode(p_ptr), |
| 578 | p_ptr->publ.ref, |
| 579 | tipc_own_addr, |
| 580 | imp, |
| 581 | TIPC_CONN_MSG, |
| 582 | err, |
| 583 | port_out_seqno(p_ptr), |
| 584 | 0); |
| 585 | } |
| 586 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 587 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 588 | { |
| 589 | struct tipc_msg *msg = buf_msg(buf); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 590 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 591 | u32 err = TIPC_OK; |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 592 | struct sk_buff *r_buf = NULL; |
| 593 | struct sk_buff *abort_buf = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 594 | |
| 595 | msg_dbg(msg, "PORT<RECV<:"); |
| 596 | |
| 597 | if (!p_ptr) { |
| 598 | err = TIPC_ERR_NO_PORT; |
| 599 | } else if (p_ptr->publ.connected) { |
| 600 | if (port_peernode(p_ptr) != msg_orignode(msg)) |
| 601 | err = TIPC_ERR_NO_PORT; |
| 602 | if (port_peerport(p_ptr) != msg_origport(msg)) |
| 603 | err = TIPC_ERR_NO_PORT; |
| 604 | if (!err && msg_routed(msg)) { |
| 605 | u32 seqno = msg_transp_seqno(msg); |
| 606 | u32 myno = ++p_ptr->last_in_seqno; |
| 607 | if (seqno != myno) { |
| 608 | err = TIPC_ERR_NO_PORT; |
| 609 | abort_buf = port_build_self_abort_msg(p_ptr, err); |
| 610 | } |
| 611 | } |
| 612 | if (msg_type(msg) == CONN_ACK) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 613 | int wakeup = tipc_port_congested(p_ptr) && |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 614 | p_ptr->publ.congested && |
| 615 | p_ptr->wakeup; |
| 616 | p_ptr->acked += msg_msgcnt(msg); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 617 | if (tipc_port_congested(p_ptr)) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 618 | goto exit; |
| 619 | p_ptr->publ.congested = 0; |
| 620 | if (!wakeup) |
| 621 | goto exit; |
| 622 | p_ptr->wakeup(&p_ptr->publ); |
| 623 | goto exit; |
| 624 | } |
| 625 | } else if (p_ptr->publ.published) { |
| 626 | err = TIPC_ERR_NO_PORT; |
| 627 | } |
| 628 | if (err) { |
| 629 | r_buf = port_build_proto_msg(msg_origport(msg), |
| 630 | msg_orignode(msg), |
| 631 | msg_destport(msg), |
| 632 | tipc_own_addr, |
| 633 | DATA_HIGH, |
| 634 | TIPC_CONN_MSG, |
| 635 | err, |
| 636 | 0, |
| 637 | 0); |
| 638 | goto exit; |
| 639 | } |
| 640 | |
| 641 | /* All is fine */ |
| 642 | if (msg_type(msg) == CONN_PROBE) { |
| 643 | r_buf = port_build_proto_msg(msg_origport(msg), |
| 644 | msg_orignode(msg), |
| 645 | msg_destport(msg), |
| 646 | tipc_own_addr, |
| 647 | CONN_MANAGER, |
| 648 | CONN_PROBE_REPLY, |
| 649 | TIPC_OK, |
| 650 | port_out_seqno(p_ptr), |
| 651 | 0); |
| 652 | } |
| 653 | p_ptr->probing_state = CONFIRMED; |
| 654 | port_incr_out_seqno(p_ptr); |
| 655 | exit: |
| 656 | if (p_ptr) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 657 | tipc_port_unlock(p_ptr); |
| 658 | tipc_net_route_msg(r_buf); |
| 659 | tipc_net_route_msg(abort_buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 660 | buf_discard(buf); |
| 661 | } |
| 662 | |
| 663 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) |
| 664 | { |
| 665 | struct publication *publ; |
| 666 | |
| 667 | if (full_id) |
| 668 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
| 669 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
| 670 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
| 671 | else |
| 672 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); |
| 673 | |
| 674 | if (p_ptr->publ.connected) { |
| 675 | u32 dport = port_peerport(p_ptr); |
| 676 | u32 destnode = port_peernode(p_ptr); |
| 677 | |
| 678 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", |
| 679 | tipc_zone(destnode), tipc_cluster(destnode), |
| 680 | tipc_node(destnode), dport); |
| 681 | if (p_ptr->publ.conn_type != 0) |
| 682 | tipc_printf(buf, " via {%u,%u}", |
| 683 | p_ptr->publ.conn_type, |
| 684 | p_ptr->publ.conn_instance); |
| 685 | } |
| 686 | else if (p_ptr->publ.published) { |
| 687 | tipc_printf(buf, " bound to"); |
| 688 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { |
| 689 | if (publ->lower == publ->upper) |
| 690 | tipc_printf(buf, " {%u,%u}", publ->type, |
| 691 | publ->lower); |
| 692 | else |
| 693 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
| 694 | publ->lower, publ->upper); |
| 695 | } |
| 696 | } |
| 697 | tipc_printf(buf, "\n"); |
| 698 | } |
| 699 | |
| 700 | #define MAX_PORT_QUERY 32768 |
| 701 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 702 | struct sk_buff *tipc_port_get_ports(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 703 | { |
| 704 | struct sk_buff *buf; |
| 705 | struct tlv_desc *rep_tlv; |
| 706 | struct print_buf pb; |
| 707 | struct port *p_ptr; |
| 708 | int str_len; |
| 709 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 710 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 711 | if (!buf) |
| 712 | return NULL; |
| 713 | rep_tlv = (struct tlv_desc *)buf->data; |
| 714 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 715 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
| 716 | spin_lock_bh(&tipc_port_list_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 717 | list_for_each_entry(p_ptr, &ports, port_list) { |
| 718 | spin_lock_bh(p_ptr->publ.lock); |
| 719 | port_print(p_ptr, &pb, 0); |
| 720 | spin_unlock_bh(p_ptr->publ.lock); |
| 721 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 722 | spin_unlock_bh(&tipc_port_list_lock); |
| 723 | str_len = tipc_printbuf_validate(&pb); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 724 | |
| 725 | skb_put(buf, TLV_SPACE(str_len)); |
| 726 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); |
| 727 | |
| 728 | return buf; |
| 729 | } |
| 730 | |
| 731 | #if 0 |
| 732 | |
| 733 | #define MAX_PORT_STATS 2000 |
| 734 | |
| 735 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) |
| 736 | { |
| 737 | u32 ref; |
| 738 | struct port *p_ptr; |
| 739 | struct sk_buff *buf; |
| 740 | struct tlv_desc *rep_tlv; |
| 741 | struct print_buf pb; |
| 742 | int str_len; |
| 743 | |
| 744 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) |
| 745 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
| 746 | |
| 747 | ref = *(u32 *)TLV_DATA(req_tlv_area); |
| 748 | ref = ntohl(ref); |
| 749 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 750 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 751 | if (!p_ptr) |
| 752 | return cfg_reply_error_string("port not found"); |
| 753 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 754 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 755 | if (!buf) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 756 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 757 | return NULL; |
| 758 | } |
| 759 | rep_tlv = (struct tlv_desc *)buf->data; |
| 760 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 761 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 762 | port_print(p_ptr, &pb, 1); |
| 763 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 764 | tipc_port_unlock(p_ptr); |
| 765 | str_len = tipc_printbuf_validate(&pb); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 766 | |
| 767 | skb_put(buf, TLV_SPACE(str_len)); |
| 768 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); |
| 769 | |
| 770 | return buf; |
| 771 | } |
| 772 | |
| 773 | #endif |
| 774 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 775 | void tipc_port_reinit(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 776 | { |
| 777 | struct port *p_ptr; |
| 778 | struct tipc_msg *msg; |
| 779 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 780 | spin_lock_bh(&tipc_port_list_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 781 | list_for_each_entry(p_ptr, &ports, port_list) { |
| 782 | msg = &p_ptr->publ.phdr; |
| 783 | if (msg_orignode(msg) == tipc_own_addr) |
| 784 | break; |
| 785 | msg_set_orignode(msg, tipc_own_addr); |
| 786 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 787 | spin_unlock_bh(&tipc_port_list_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | |
| 791 | /* |
| 792 | * port_dispatcher_sigh(): Signal handler for messages destinated |
| 793 | * to the tipc_port interface. |
| 794 | */ |
| 795 | |
| 796 | static void port_dispatcher_sigh(void *dummy) |
| 797 | { |
| 798 | struct sk_buff *buf; |
| 799 | |
| 800 | spin_lock_bh(&queue_lock); |
| 801 | buf = msg_queue_head; |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 802 | msg_queue_head = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 803 | spin_unlock_bh(&queue_lock); |
| 804 | |
| 805 | while (buf) { |
| 806 | struct port *p_ptr; |
| 807 | struct user_port *up_ptr; |
| 808 | struct tipc_portid orig; |
| 809 | struct tipc_name_seq dseq; |
| 810 | void *usr_handle; |
| 811 | int connected; |
| 812 | int published; |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 813 | u32 message_type; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 814 | |
| 815 | struct sk_buff *next = buf->next; |
| 816 | struct tipc_msg *msg = buf_msg(buf); |
| 817 | u32 dref = msg_destport(msg); |
| 818 | |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 819 | message_type = msg_type(msg); |
| 820 | if (message_type > TIPC_DIRECT_MSG) |
| 821 | goto reject; /* Unsupported message type */ |
| 822 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 823 | p_ptr = tipc_port_lock(dref); |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 824 | if (!p_ptr) |
| 825 | goto reject; /* Port deleted while msg in queue */ |
| 826 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 827 | orig.ref = msg_origport(msg); |
| 828 | orig.node = msg_orignode(msg); |
| 829 | up_ptr = p_ptr->user_port; |
| 830 | usr_handle = up_ptr->usr_handle; |
| 831 | connected = p_ptr->publ.connected; |
| 832 | published = p_ptr->publ.published; |
| 833 | |
| 834 | if (unlikely(msg_errcode(msg))) |
| 835 | goto err; |
| 836 | |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 837 | switch (message_type) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 838 | |
| 839 | case TIPC_CONN_MSG:{ |
| 840 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; |
| 841 | u32 peer_port = port_peerport(p_ptr); |
| 842 | u32 peer_node = port_peernode(p_ptr); |
| 843 | |
| 844 | spin_unlock_bh(p_ptr->publ.lock); |
| 845 | if (unlikely(!connected)) { |
| 846 | if (unlikely(published)) |
| 847 | goto reject; |
| 848 | tipc_connect2port(dref,&orig); |
| 849 | } |
| 850 | if (unlikely(msg_origport(msg) != peer_port)) |
| 851 | goto reject; |
| 852 | if (unlikely(msg_orignode(msg) != peer_node)) |
| 853 | goto reject; |
| 854 | if (unlikely(!cb)) |
| 855 | goto reject; |
| 856 | if (unlikely(++p_ptr->publ.conn_unacked >= |
| 857 | TIPC_FLOW_CONTROL_WIN)) |
| 858 | tipc_acknowledge(dref, |
| 859 | p_ptr->publ.conn_unacked); |
| 860 | skb_pull(buf, msg_hdr_sz(msg)); |
| 861 | cb(usr_handle, dref, &buf, msg_data(msg), |
| 862 | msg_data_sz(msg)); |
| 863 | break; |
| 864 | } |
| 865 | case TIPC_DIRECT_MSG:{ |
| 866 | tipc_msg_event cb = up_ptr->msg_cb; |
| 867 | |
| 868 | spin_unlock_bh(p_ptr->publ.lock); |
| 869 | if (unlikely(connected)) |
| 870 | goto reject; |
| 871 | if (unlikely(!cb)) |
| 872 | goto reject; |
| 873 | skb_pull(buf, msg_hdr_sz(msg)); |
| 874 | cb(usr_handle, dref, &buf, msg_data(msg), |
| 875 | msg_data_sz(msg), msg_importance(msg), |
| 876 | &orig); |
| 877 | break; |
| 878 | } |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 879 | case TIPC_MCAST_MSG: |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 880 | case TIPC_NAMED_MSG:{ |
| 881 | tipc_named_msg_event cb = up_ptr->named_msg_cb; |
| 882 | |
| 883 | spin_unlock_bh(p_ptr->publ.lock); |
| 884 | if (unlikely(connected)) |
| 885 | goto reject; |
| 886 | if (unlikely(!cb)) |
| 887 | goto reject; |
| 888 | if (unlikely(!published)) |
| 889 | goto reject; |
| 890 | dseq.type = msg_nametype(msg); |
| 891 | dseq.lower = msg_nameinst(msg); |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 892 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
| 893 | ? dseq.lower : msg_nameupper(msg); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 894 | skb_pull(buf, msg_hdr_sz(msg)); |
| 895 | cb(usr_handle, dref, &buf, msg_data(msg), |
| 896 | msg_data_sz(msg), msg_importance(msg), |
| 897 | &orig, &dseq); |
| 898 | break; |
| 899 | } |
| 900 | } |
| 901 | if (buf) |
| 902 | buf_discard(buf); |
| 903 | buf = next; |
| 904 | continue; |
| 905 | err: |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 906 | switch (message_type) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 907 | |
| 908 | case TIPC_CONN_MSG:{ |
| 909 | tipc_conn_shutdown_event cb = |
| 910 | up_ptr->conn_err_cb; |
| 911 | u32 peer_port = port_peerport(p_ptr); |
| 912 | u32 peer_node = port_peernode(p_ptr); |
| 913 | |
| 914 | spin_unlock_bh(p_ptr->publ.lock); |
| 915 | if (!connected || !cb) |
| 916 | break; |
| 917 | if (msg_origport(msg) != peer_port) |
| 918 | break; |
| 919 | if (msg_orignode(msg) != peer_node) |
| 920 | break; |
| 921 | tipc_disconnect(dref); |
| 922 | skb_pull(buf, msg_hdr_sz(msg)); |
| 923 | cb(usr_handle, dref, &buf, msg_data(msg), |
| 924 | msg_data_sz(msg), msg_errcode(msg)); |
| 925 | break; |
| 926 | } |
| 927 | case TIPC_DIRECT_MSG:{ |
| 928 | tipc_msg_err_event cb = up_ptr->err_cb; |
| 929 | |
| 930 | spin_unlock_bh(p_ptr->publ.lock); |
| 931 | if (connected || !cb) |
| 932 | break; |
| 933 | skb_pull(buf, msg_hdr_sz(msg)); |
| 934 | cb(usr_handle, dref, &buf, msg_data(msg), |
| 935 | msg_data_sz(msg), msg_errcode(msg), &orig); |
| 936 | break; |
| 937 | } |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 938 | case TIPC_MCAST_MSG: |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 939 | case TIPC_NAMED_MSG:{ |
| 940 | tipc_named_msg_err_event cb = |
| 941 | up_ptr->named_err_cb; |
| 942 | |
| 943 | spin_unlock_bh(p_ptr->publ.lock); |
| 944 | if (connected || !cb) |
| 945 | break; |
| 946 | dseq.type = msg_nametype(msg); |
| 947 | dseq.lower = msg_nameinst(msg); |
Allan Stephens | 9688243 | 2006-06-25 23:38:58 -0700 | [diff] [blame^] | 948 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
| 949 | ? dseq.lower : msg_nameupper(msg); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 950 | skb_pull(buf, msg_hdr_sz(msg)); |
| 951 | cb(usr_handle, dref, &buf, msg_data(msg), |
| 952 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
| 953 | break; |
| 954 | } |
| 955 | } |
| 956 | if (buf) |
| 957 | buf_discard(buf); |
| 958 | buf = next; |
| 959 | continue; |
| 960 | reject: |
| 961 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); |
| 962 | buf = next; |
| 963 | } |
| 964 | } |
| 965 | |
| 966 | /* |
| 967 | * port_dispatcher(): Dispatcher for messages destinated |
| 968 | * to the tipc_port interface. Called with port locked. |
| 969 | */ |
| 970 | |
| 971 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) |
| 972 | { |
| 973 | buf->next = NULL; |
| 974 | spin_lock_bh(&queue_lock); |
| 975 | if (msg_queue_head) { |
| 976 | msg_queue_tail->next = buf; |
| 977 | msg_queue_tail = buf; |
| 978 | } else { |
| 979 | msg_queue_tail = msg_queue_head = buf; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 980 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 981 | } |
| 982 | spin_unlock_bh(&queue_lock); |
| 983 | return TIPC_OK; |
| 984 | } |
| 985 | |
| 986 | /* |
| 987 | * Wake up port after congestion: Called with port locked, |
| 988 | * |
| 989 | */ |
| 990 | |
| 991 | static void port_wakeup_sh(unsigned long ref) |
| 992 | { |
| 993 | struct port *p_ptr; |
| 994 | struct user_port *up_ptr; |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 995 | tipc_continue_event cb = NULL; |
| 996 | void *uh = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 997 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 998 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 999 | if (p_ptr) { |
| 1000 | up_ptr = p_ptr->user_port; |
| 1001 | if (up_ptr) { |
| 1002 | cb = up_ptr->continue_event_cb; |
| 1003 | uh = up_ptr->usr_handle; |
| 1004 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1005 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1006 | } |
| 1007 | if (cb) |
| 1008 | cb(uh, ref); |
| 1009 | } |
| 1010 | |
| 1011 | |
| 1012 | static void port_wakeup(struct tipc_port *p_ptr) |
| 1013 | { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1014 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1015 | } |
| 1016 | |
| 1017 | void tipc_acknowledge(u32 ref, u32 ack) |
| 1018 | { |
| 1019 | struct port *p_ptr; |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 1020 | struct sk_buff *buf = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1021 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1022 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1023 | if (!p_ptr) |
| 1024 | return; |
| 1025 | if (p_ptr->publ.connected) { |
| 1026 | p_ptr->publ.conn_unacked -= ack; |
| 1027 | buf = port_build_proto_msg(port_peerport(p_ptr), |
| 1028 | port_peernode(p_ptr), |
| 1029 | ref, |
| 1030 | tipc_own_addr, |
| 1031 | CONN_MANAGER, |
| 1032 | CONN_ACK, |
| 1033 | TIPC_OK, |
| 1034 | port_out_seqno(p_ptr), |
| 1035 | ack); |
| 1036 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1037 | tipc_port_unlock(p_ptr); |
| 1038 | tipc_net_route_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1039 | } |
| 1040 | |
| 1041 | /* |
| 1042 | * tipc_createport(): user level call. Will add port to |
| 1043 | * registry if non-zero user_ref. |
| 1044 | */ |
| 1045 | |
| 1046 | int tipc_createport(u32 user_ref, |
| 1047 | void *usr_handle, |
| 1048 | unsigned int importance, |
| 1049 | tipc_msg_err_event error_cb, |
| 1050 | tipc_named_msg_err_event named_error_cb, |
| 1051 | tipc_conn_shutdown_event conn_error_cb, |
| 1052 | tipc_msg_event msg_cb, |
| 1053 | tipc_named_msg_event named_msg_cb, |
| 1054 | tipc_conn_msg_event conn_msg_cb, |
| 1055 | tipc_continue_event continue_event_cb,/* May be zero */ |
| 1056 | u32 *portref) |
| 1057 | { |
| 1058 | struct user_port *up_ptr; |
| 1059 | struct port *p_ptr; |
| 1060 | u32 ref; |
| 1061 | |
| 1062 | up_ptr = (struct user_port *)kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
| 1063 | if (up_ptr == NULL) { |
| 1064 | return -ENOMEM; |
| 1065 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 1066 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, importance); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1067 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1068 | if (!p_ptr) { |
| 1069 | kfree(up_ptr); |
| 1070 | return -ENOMEM; |
| 1071 | } |
| 1072 | |
| 1073 | p_ptr->user_port = up_ptr; |
| 1074 | up_ptr->user_ref = user_ref; |
| 1075 | up_ptr->usr_handle = usr_handle; |
| 1076 | up_ptr->ref = p_ptr->publ.ref; |
| 1077 | up_ptr->err_cb = error_cb; |
| 1078 | up_ptr->named_err_cb = named_error_cb; |
| 1079 | up_ptr->conn_err_cb = conn_error_cb; |
| 1080 | up_ptr->msg_cb = msg_cb; |
| 1081 | up_ptr->named_msg_cb = named_msg_cb; |
| 1082 | up_ptr->conn_msg_cb = conn_msg_cb; |
| 1083 | up_ptr->continue_event_cb = continue_event_cb; |
| 1084 | INIT_LIST_HEAD(&up_ptr->uport_list); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1085 | tipc_reg_add_port(up_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1086 | *portref = p_ptr->publ.ref; |
| 1087 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1088 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1089 | return TIPC_OK; |
| 1090 | } |
| 1091 | |
| 1092 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) |
| 1093 | { |
| 1094 | id->ref = ref; |
| 1095 | id->node = tipc_own_addr; |
| 1096 | return TIPC_OK; |
| 1097 | } |
| 1098 | |
| 1099 | int tipc_portimportance(u32 ref, unsigned int *importance) |
| 1100 | { |
| 1101 | struct port *p_ptr; |
| 1102 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1103 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1104 | if (!p_ptr) |
| 1105 | return -EINVAL; |
| 1106 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); |
| 1107 | spin_unlock_bh(p_ptr->publ.lock); |
| 1108 | return TIPC_OK; |
| 1109 | } |
| 1110 | |
| 1111 | int tipc_set_portimportance(u32 ref, unsigned int imp) |
| 1112 | { |
| 1113 | struct port *p_ptr; |
| 1114 | |
| 1115 | if (imp > TIPC_CRITICAL_IMPORTANCE) |
| 1116 | return -EINVAL; |
| 1117 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1118 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1119 | if (!p_ptr) |
| 1120 | return -EINVAL; |
| 1121 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); |
| 1122 | spin_unlock_bh(p_ptr->publ.lock); |
| 1123 | return TIPC_OK; |
| 1124 | } |
| 1125 | |
| 1126 | |
| 1127 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) |
| 1128 | { |
| 1129 | struct port *p_ptr; |
| 1130 | struct publication *publ; |
| 1131 | u32 key; |
| 1132 | int res = -EINVAL; |
| 1133 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1134 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1135 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
| 1136 | "lower = %u, upper = %u\n", |
| 1137 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); |
| 1138 | if (!p_ptr) |
| 1139 | return -EINVAL; |
| 1140 | if (p_ptr->publ.connected) |
| 1141 | goto exit; |
| 1142 | if (seq->lower > seq->upper) |
| 1143 | goto exit; |
| 1144 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) |
| 1145 | goto exit; |
| 1146 | key = ref + p_ptr->pub_count + 1; |
| 1147 | if (key == ref) { |
| 1148 | res = -EADDRINUSE; |
| 1149 | goto exit; |
| 1150 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1151 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
| 1152 | scope, p_ptr->publ.ref, key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1153 | if (publ) { |
| 1154 | list_add(&publ->pport_list, &p_ptr->publications); |
| 1155 | p_ptr->pub_count++; |
| 1156 | p_ptr->publ.published = 1; |
| 1157 | res = TIPC_OK; |
| 1158 | } |
| 1159 | exit: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1160 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1161 | return res; |
| 1162 | } |
| 1163 | |
| 1164 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) |
| 1165 | { |
| 1166 | struct port *p_ptr; |
| 1167 | struct publication *publ; |
| 1168 | struct publication *tpubl; |
| 1169 | int res = -EINVAL; |
| 1170 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1171 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1172 | if (!p_ptr) |
| 1173 | return -EINVAL; |
| 1174 | if (!p_ptr->publ.published) |
| 1175 | goto exit; |
| 1176 | if (!seq) { |
| 1177 | list_for_each_entry_safe(publ, tpubl, |
| 1178 | &p_ptr->publications, pport_list) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1179 | tipc_nametbl_withdraw(publ->type, publ->lower, |
| 1180 | publ->ref, publ->key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1181 | } |
| 1182 | res = TIPC_OK; |
| 1183 | } else { |
| 1184 | list_for_each_entry_safe(publ, tpubl, |
| 1185 | &p_ptr->publications, pport_list) { |
| 1186 | if (publ->scope != scope) |
| 1187 | continue; |
| 1188 | if (publ->type != seq->type) |
| 1189 | continue; |
| 1190 | if (publ->lower != seq->lower) |
| 1191 | continue; |
| 1192 | if (publ->upper != seq->upper) |
| 1193 | break; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1194 | tipc_nametbl_withdraw(publ->type, publ->lower, |
| 1195 | publ->ref, publ->key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1196 | res = TIPC_OK; |
| 1197 | break; |
| 1198 | } |
| 1199 | } |
| 1200 | if (list_empty(&p_ptr->publications)) |
| 1201 | p_ptr->publ.published = 0; |
| 1202 | exit: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1203 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1204 | return res; |
| 1205 | } |
| 1206 | |
| 1207 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) |
| 1208 | { |
| 1209 | struct port *p_ptr; |
| 1210 | struct tipc_msg *msg; |
| 1211 | int res = -EINVAL; |
| 1212 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1213 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1214 | if (!p_ptr) |
| 1215 | return -EINVAL; |
| 1216 | if (p_ptr->publ.published || p_ptr->publ.connected) |
| 1217 | goto exit; |
| 1218 | if (!peer->ref) |
| 1219 | goto exit; |
| 1220 | |
| 1221 | msg = &p_ptr->publ.phdr; |
| 1222 | msg_set_destnode(msg, peer->node); |
| 1223 | msg_set_destport(msg, peer->ref); |
| 1224 | msg_set_orignode(msg, tipc_own_addr); |
| 1225 | msg_set_origport(msg, p_ptr->publ.ref); |
| 1226 | msg_set_transp_seqno(msg, 42); |
| 1227 | msg_set_type(msg, TIPC_CONN_MSG); |
| 1228 | if (!may_route(peer->node)) |
| 1229 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
| 1230 | else |
| 1231 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
| 1232 | |
| 1233 | p_ptr->probing_interval = PROBING_INTERVAL; |
| 1234 | p_ptr->probing_state = CONFIRMED; |
| 1235 | p_ptr->publ.connected = 1; |
| 1236 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
| 1237 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1238 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
David S. Miller | 880b005 | 2006-01-12 13:22:32 -0800 | [diff] [blame] | 1239 | (void *)(unsigned long)ref, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1240 | (net_ev_handler)port_handle_node_down); |
| 1241 | res = TIPC_OK; |
| 1242 | exit: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1243 | tipc_port_unlock(p_ptr); |
| 1244 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1245 | return res; |
| 1246 | } |
| 1247 | |
| 1248 | /* |
| 1249 | * tipc_disconnect(): Disconnect port form peer. |
| 1250 | * This is a node local operation. |
| 1251 | */ |
| 1252 | |
| 1253 | int tipc_disconnect(u32 ref) |
| 1254 | { |
| 1255 | struct port *p_ptr; |
| 1256 | int res = -ENOTCONN; |
| 1257 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1258 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1259 | if (!p_ptr) |
| 1260 | return -EINVAL; |
| 1261 | if (p_ptr->publ.connected) { |
| 1262 | p_ptr->publ.connected = 0; |
| 1263 | /* let timer expire on it's own to avoid deadlock! */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1264 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1265 | res = TIPC_OK; |
| 1266 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1267 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1268 | return res; |
| 1269 | } |
| 1270 | |
| 1271 | /* |
| 1272 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect |
| 1273 | */ |
| 1274 | int tipc_shutdown(u32 ref) |
| 1275 | { |
| 1276 | struct port *p_ptr; |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 1277 | struct sk_buff *buf = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1278 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1279 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1280 | if (!p_ptr) |
| 1281 | return -EINVAL; |
| 1282 | |
| 1283 | if (p_ptr->publ.connected) { |
| 1284 | u32 imp = msg_importance(&p_ptr->publ.phdr); |
| 1285 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
| 1286 | imp++; |
| 1287 | buf = port_build_proto_msg(port_peerport(p_ptr), |
| 1288 | port_peernode(p_ptr), |
| 1289 | ref, |
| 1290 | tipc_own_addr, |
| 1291 | imp, |
| 1292 | TIPC_CONN_MSG, |
| 1293 | TIPC_CONN_SHUTDOWN, |
| 1294 | port_out_seqno(p_ptr), |
| 1295 | 0); |
| 1296 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1297 | tipc_port_unlock(p_ptr); |
| 1298 | tipc_net_route_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1299 | return tipc_disconnect(ref); |
| 1300 | } |
| 1301 | |
| 1302 | int tipc_isconnected(u32 ref, int *isconnected) |
| 1303 | { |
| 1304 | struct port *p_ptr; |
| 1305 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1306 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1307 | if (!p_ptr) |
| 1308 | return -EINVAL; |
| 1309 | *isconnected = p_ptr->publ.connected; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1310 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1311 | return TIPC_OK; |
| 1312 | } |
| 1313 | |
| 1314 | int tipc_peer(u32 ref, struct tipc_portid *peer) |
| 1315 | { |
| 1316 | struct port *p_ptr; |
| 1317 | int res; |
| 1318 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1319 | p_ptr = tipc_port_lock(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1320 | if (!p_ptr) |
| 1321 | return -EINVAL; |
| 1322 | if (p_ptr->publ.connected) { |
| 1323 | peer->ref = port_peerport(p_ptr); |
| 1324 | peer->node = port_peernode(p_ptr); |
| 1325 | res = TIPC_OK; |
| 1326 | } else |
| 1327 | res = -ENOTCONN; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1328 | tipc_port_unlock(p_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1329 | return res; |
| 1330 | } |
| 1331 | |
| 1332 | int tipc_ref_valid(u32 ref) |
| 1333 | { |
| 1334 | /* Works irrespective of type */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1335 | return !!tipc_ref_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1336 | } |
| 1337 | |
| 1338 | |
| 1339 | /* |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1340 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1341 | * message for this node. |
| 1342 | */ |
| 1343 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1344 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1345 | struct iovec const *msg_sect) |
| 1346 | { |
| 1347 | struct sk_buff *buf; |
| 1348 | int res; |
| 1349 | |
| 1350 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, |
| 1351 | MAX_MSG_SIZE, !sender->user_port, &buf); |
| 1352 | if (likely(buf)) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1353 | tipc_port_recv_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1354 | return res; |
| 1355 | } |
| 1356 | |
| 1357 | /** |
| 1358 | * tipc_send - send message sections on connection |
| 1359 | */ |
| 1360 | |
| 1361 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) |
| 1362 | { |
| 1363 | struct port *p_ptr; |
| 1364 | u32 destnode; |
| 1365 | int res; |
| 1366 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1367 | p_ptr = tipc_port_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1368 | if (!p_ptr || !p_ptr->publ.connected) |
| 1369 | return -EINVAL; |
| 1370 | |
| 1371 | p_ptr->publ.congested = 1; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1372 | if (!tipc_port_congested(p_ptr)) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1373 | destnode = port_peernode(p_ptr); |
| 1374 | if (likely(destnode != tipc_own_addr)) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1375 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
| 1376 | destnode); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1377 | else |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1378 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1379 | |
| 1380 | if (likely(res != -ELINKCONG)) { |
| 1381 | port_incr_out_seqno(p_ptr); |
| 1382 | p_ptr->publ.congested = 0; |
| 1383 | p_ptr->sent++; |
| 1384 | return res; |
| 1385 | } |
| 1386 | } |
| 1387 | if (port_unreliable(p_ptr)) { |
| 1388 | p_ptr->publ.congested = 0; |
| 1389 | /* Just calculate msg length and return */ |
| 1390 | return msg_calc_data_size(msg_sect, num_sect); |
| 1391 | } |
| 1392 | return -ELINKCONG; |
| 1393 | } |
| 1394 | |
| 1395 | /** |
| 1396 | * tipc_send_buf - send message buffer on connection |
| 1397 | */ |
| 1398 | |
| 1399 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) |
| 1400 | { |
| 1401 | struct port *p_ptr; |
| 1402 | struct tipc_msg *msg; |
| 1403 | u32 destnode; |
| 1404 | u32 hsz; |
| 1405 | u32 sz; |
| 1406 | u32 res; |
| 1407 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1408 | p_ptr = tipc_port_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1409 | if (!p_ptr || !p_ptr->publ.connected) |
| 1410 | return -EINVAL; |
| 1411 | |
| 1412 | msg = &p_ptr->publ.phdr; |
| 1413 | hsz = msg_hdr_sz(msg); |
| 1414 | sz = hsz + dsz; |
| 1415 | msg_set_size(msg, sz); |
| 1416 | if (skb_cow(buf, hsz)) |
| 1417 | return -ENOMEM; |
| 1418 | |
| 1419 | skb_push(buf, hsz); |
| 1420 | memcpy(buf->data, (unchar *)msg, hsz); |
| 1421 | destnode = msg_destnode(msg); |
| 1422 | p_ptr->publ.congested = 1; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1423 | if (!tipc_port_congested(p_ptr)) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1424 | if (likely(destnode != tipc_own_addr)) |
| 1425 | res = tipc_send_buf_fast(buf, destnode); |
| 1426 | else { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1427 | tipc_port_recv_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1428 | res = sz; |
| 1429 | } |
| 1430 | if (likely(res != -ELINKCONG)) { |
| 1431 | port_incr_out_seqno(p_ptr); |
| 1432 | p_ptr->sent++; |
| 1433 | p_ptr->publ.congested = 0; |
| 1434 | return res; |
| 1435 | } |
| 1436 | } |
| 1437 | if (port_unreliable(p_ptr)) { |
| 1438 | p_ptr->publ.congested = 0; |
| 1439 | return dsz; |
| 1440 | } |
| 1441 | return -ELINKCONG; |
| 1442 | } |
| 1443 | |
| 1444 | /** |
| 1445 | * tipc_forward2name - forward message sections to port name |
| 1446 | */ |
| 1447 | |
| 1448 | int tipc_forward2name(u32 ref, |
| 1449 | struct tipc_name const *name, |
| 1450 | u32 domain, |
| 1451 | u32 num_sect, |
| 1452 | struct iovec const *msg_sect, |
| 1453 | struct tipc_portid const *orig, |
| 1454 | unsigned int importance) |
| 1455 | { |
| 1456 | struct port *p_ptr; |
| 1457 | struct tipc_msg *msg; |
| 1458 | u32 destnode = domain; |
| 1459 | u32 destport = 0; |
| 1460 | int res; |
| 1461 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1462 | p_ptr = tipc_port_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1463 | if (!p_ptr || p_ptr->publ.connected) |
| 1464 | return -EINVAL; |
| 1465 | |
| 1466 | msg = &p_ptr->publ.phdr; |
| 1467 | msg_set_type(msg, TIPC_NAMED_MSG); |
| 1468 | msg_set_orignode(msg, orig->node); |
| 1469 | msg_set_origport(msg, orig->ref); |
| 1470 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
| 1471 | msg_set_nametype(msg, name->type); |
| 1472 | msg_set_nameinst(msg, name->instance); |
| 1473 | msg_set_lookup_scope(msg, addr_scope(domain)); |
| 1474 | if (importance <= TIPC_CRITICAL_IMPORTANCE) |
| 1475 | msg_set_importance(msg,importance); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1476 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1477 | msg_set_destnode(msg, destnode); |
| 1478 | msg_set_destport(msg, destport); |
| 1479 | |
| 1480 | if (likely(destport || destnode)) { |
| 1481 | p_ptr->sent++; |
| 1482 | if (likely(destnode == tipc_own_addr)) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1483 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
| 1484 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
| 1485 | destnode); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1486 | if (likely(res != -ELINKCONG)) |
| 1487 | return res; |
| 1488 | if (port_unreliable(p_ptr)) { |
| 1489 | /* Just calculate msg length and return */ |
| 1490 | return msg_calc_data_size(msg_sect, num_sect); |
| 1491 | } |
| 1492 | return -ELINKCONG; |
| 1493 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1494 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
| 1495 | TIPC_ERR_NO_NAME); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1496 | } |
| 1497 | |
| 1498 | /** |
| 1499 | * tipc_send2name - send message sections to port name |
| 1500 | */ |
| 1501 | |
| 1502 | int tipc_send2name(u32 ref, |
| 1503 | struct tipc_name const *name, |
| 1504 | unsigned int domain, |
| 1505 | unsigned int num_sect, |
| 1506 | struct iovec const *msg_sect) |
| 1507 | { |
| 1508 | struct tipc_portid orig; |
| 1509 | |
| 1510 | orig.ref = ref; |
| 1511 | orig.node = tipc_own_addr; |
| 1512 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, |
| 1513 | TIPC_PORT_IMPORTANCE); |
| 1514 | } |
| 1515 | |
| 1516 | /** |
| 1517 | * tipc_forward_buf2name - forward message buffer to port name |
| 1518 | */ |
| 1519 | |
| 1520 | int tipc_forward_buf2name(u32 ref, |
| 1521 | struct tipc_name const *name, |
| 1522 | u32 domain, |
| 1523 | struct sk_buff *buf, |
| 1524 | unsigned int dsz, |
| 1525 | struct tipc_portid const *orig, |
| 1526 | unsigned int importance) |
| 1527 | { |
| 1528 | struct port *p_ptr; |
| 1529 | struct tipc_msg *msg; |
| 1530 | u32 destnode = domain; |
| 1531 | u32 destport = 0; |
| 1532 | int res; |
| 1533 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1534 | p_ptr = (struct port *)tipc_ref_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1535 | if (!p_ptr || p_ptr->publ.connected) |
| 1536 | return -EINVAL; |
| 1537 | |
| 1538 | msg = &p_ptr->publ.phdr; |
| 1539 | if (importance <= TIPC_CRITICAL_IMPORTANCE) |
| 1540 | msg_set_importance(msg, importance); |
| 1541 | msg_set_type(msg, TIPC_NAMED_MSG); |
| 1542 | msg_set_orignode(msg, orig->node); |
| 1543 | msg_set_origport(msg, orig->ref); |
| 1544 | msg_set_nametype(msg, name->type); |
| 1545 | msg_set_nameinst(msg, name->instance); |
| 1546 | msg_set_lookup_scope(msg, addr_scope(domain)); |
| 1547 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
| 1548 | msg_set_size(msg, LONG_H_SIZE + dsz); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1549 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1550 | msg_set_destnode(msg, destnode); |
| 1551 | msg_set_destport(msg, destport); |
| 1552 | msg_dbg(msg, "forw2name ==> "); |
| 1553 | if (skb_cow(buf, LONG_H_SIZE)) |
| 1554 | return -ENOMEM; |
| 1555 | skb_push(buf, LONG_H_SIZE); |
| 1556 | memcpy(buf->data, (unchar *)msg, LONG_H_SIZE); |
| 1557 | msg_dbg(buf_msg(buf),"PREP:"); |
| 1558 | if (likely(destport || destnode)) { |
| 1559 | p_ptr->sent++; |
| 1560 | if (destnode == tipc_own_addr) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1561 | return tipc_port_recv_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1562 | res = tipc_send_buf_fast(buf, destnode); |
| 1563 | if (likely(res != -ELINKCONG)) |
| 1564 | return res; |
| 1565 | if (port_unreliable(p_ptr)) |
| 1566 | return dsz; |
| 1567 | return -ELINKCONG; |
| 1568 | } |
| 1569 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); |
| 1570 | } |
| 1571 | |
| 1572 | /** |
| 1573 | * tipc_send_buf2name - send message buffer to port name |
| 1574 | */ |
| 1575 | |
| 1576 | int tipc_send_buf2name(u32 ref, |
| 1577 | struct tipc_name const *dest, |
| 1578 | u32 domain, |
| 1579 | struct sk_buff *buf, |
| 1580 | unsigned int dsz) |
| 1581 | { |
| 1582 | struct tipc_portid orig; |
| 1583 | |
| 1584 | orig.ref = ref; |
| 1585 | orig.node = tipc_own_addr; |
| 1586 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, |
| 1587 | TIPC_PORT_IMPORTANCE); |
| 1588 | } |
| 1589 | |
| 1590 | /** |
| 1591 | * tipc_forward2port - forward message sections to port identity |
| 1592 | */ |
| 1593 | |
| 1594 | int tipc_forward2port(u32 ref, |
| 1595 | struct tipc_portid const *dest, |
| 1596 | unsigned int num_sect, |
| 1597 | struct iovec const *msg_sect, |
| 1598 | struct tipc_portid const *orig, |
| 1599 | unsigned int importance) |
| 1600 | { |
| 1601 | struct port *p_ptr; |
| 1602 | struct tipc_msg *msg; |
| 1603 | int res; |
| 1604 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1605 | p_ptr = tipc_port_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1606 | if (!p_ptr || p_ptr->publ.connected) |
| 1607 | return -EINVAL; |
| 1608 | |
| 1609 | msg = &p_ptr->publ.phdr; |
| 1610 | msg_set_type(msg, TIPC_DIRECT_MSG); |
| 1611 | msg_set_orignode(msg, orig->node); |
| 1612 | msg_set_origport(msg, orig->ref); |
| 1613 | msg_set_destnode(msg, dest->node); |
| 1614 | msg_set_destport(msg, dest->ref); |
| 1615 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); |
| 1616 | if (importance <= TIPC_CRITICAL_IMPORTANCE) |
| 1617 | msg_set_importance(msg, importance); |
| 1618 | p_ptr->sent++; |
| 1619 | if (dest->node == tipc_own_addr) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1620 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
| 1621 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1622 | if (likely(res != -ELINKCONG)) |
| 1623 | return res; |
| 1624 | if (port_unreliable(p_ptr)) { |
| 1625 | /* Just calculate msg length and return */ |
| 1626 | return msg_calc_data_size(msg_sect, num_sect); |
| 1627 | } |
| 1628 | return -ELINKCONG; |
| 1629 | } |
| 1630 | |
| 1631 | /** |
| 1632 | * tipc_send2port - send message sections to port identity |
| 1633 | */ |
| 1634 | |
| 1635 | int tipc_send2port(u32 ref, |
| 1636 | struct tipc_portid const *dest, |
| 1637 | unsigned int num_sect, |
| 1638 | struct iovec const *msg_sect) |
| 1639 | { |
| 1640 | struct tipc_portid orig; |
| 1641 | |
| 1642 | orig.ref = ref; |
| 1643 | orig.node = tipc_own_addr; |
| 1644 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
| 1645 | TIPC_PORT_IMPORTANCE); |
| 1646 | } |
| 1647 | |
| 1648 | /** |
| 1649 | * tipc_forward_buf2port - forward message buffer to port identity |
| 1650 | */ |
| 1651 | int tipc_forward_buf2port(u32 ref, |
| 1652 | struct tipc_portid const *dest, |
| 1653 | struct sk_buff *buf, |
| 1654 | unsigned int dsz, |
| 1655 | struct tipc_portid const *orig, |
| 1656 | unsigned int importance) |
| 1657 | { |
| 1658 | struct port *p_ptr; |
| 1659 | struct tipc_msg *msg; |
| 1660 | int res; |
| 1661 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1662 | p_ptr = (struct port *)tipc_ref_deref(ref); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1663 | if (!p_ptr || p_ptr->publ.connected) |
| 1664 | return -EINVAL; |
| 1665 | |
| 1666 | msg = &p_ptr->publ.phdr; |
| 1667 | msg_set_type(msg, TIPC_DIRECT_MSG); |
| 1668 | msg_set_orignode(msg, orig->node); |
| 1669 | msg_set_origport(msg, orig->ref); |
| 1670 | msg_set_destnode(msg, dest->node); |
| 1671 | msg_set_destport(msg, dest->ref); |
| 1672 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); |
| 1673 | if (importance <= TIPC_CRITICAL_IMPORTANCE) |
| 1674 | msg_set_importance(msg, importance); |
| 1675 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); |
| 1676 | if (skb_cow(buf, DIR_MSG_H_SIZE)) |
| 1677 | return -ENOMEM; |
| 1678 | |
| 1679 | skb_push(buf, DIR_MSG_H_SIZE); |
| 1680 | memcpy(buf->data, (unchar *)msg, DIR_MSG_H_SIZE); |
| 1681 | msg_dbg(msg, "buf2port: "); |
| 1682 | p_ptr->sent++; |
| 1683 | if (dest->node == tipc_own_addr) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 1684 | return tipc_port_recv_msg(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1685 | res = tipc_send_buf_fast(buf, dest->node); |
| 1686 | if (likely(res != -ELINKCONG)) |
| 1687 | return res; |
| 1688 | if (port_unreliable(p_ptr)) |
| 1689 | return dsz; |
| 1690 | return -ELINKCONG; |
| 1691 | } |
| 1692 | |
| 1693 | /** |
| 1694 | * tipc_send_buf2port - send message buffer to port identity |
| 1695 | */ |
| 1696 | |
| 1697 | int tipc_send_buf2port(u32 ref, |
| 1698 | struct tipc_portid const *dest, |
| 1699 | struct sk_buff *buf, |
| 1700 | unsigned int dsz) |
| 1701 | { |
| 1702 | struct tipc_portid orig; |
| 1703 | |
| 1704 | orig.ref = ref; |
| 1705 | orig.node = tipc_own_addr; |
| 1706 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
| 1707 | TIPC_PORT_IMPORTANCE); |
| 1708 | } |
| 1709 | |