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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 | #include <linux/in.h> #include <linux/inet.h> #include <linux/list.h> #include <linux/module.h> #include <linux/net.h> #include <linux/proc_fs.h> #include <linux/rculist.h> #include <linux/seq_file.h> #include <linux/socket.h> #include <net/inet_sock.h> #include <net/kcm.h> #include <net/net_namespace.h> #include <net/netns/generic.h> #include <net/tcp.h> #ifdef CONFIG_PROC_FS struct kcm_seq_muxinfo { char *name; const struct file_operations *seq_fops; const struct seq_operations seq_ops; }; static struct kcm_mux *kcm_get_first(struct seq_file *seq) { struct net *net = seq_file_net(seq); struct kcm_net *knet = net_generic(net, kcm_net_id); return list_first_or_null_rcu(&knet->mux_list, struct kcm_mux, kcm_mux_list); } static struct kcm_mux *kcm_get_next(struct kcm_mux *mux) { struct kcm_net *knet = mux->knet; return list_next_or_null_rcu(&knet->mux_list, &mux->kcm_mux_list, struct kcm_mux, kcm_mux_list); } static struct kcm_mux *kcm_get_idx(struct seq_file *seq, loff_t pos) { struct net *net = seq_file_net(seq); struct kcm_net *knet = net_generic(net, kcm_net_id); struct kcm_mux *m; list_for_each_entry_rcu(m, &knet->mux_list, kcm_mux_list) { if (!pos) return m; --pos; } return NULL; } static void *kcm_seq_next(struct seq_file *seq, void *v, loff_t *pos) { void *p; if (v == SEQ_START_TOKEN) p = kcm_get_first(seq); else p = kcm_get_next(v); ++*pos; return p; } static void *kcm_seq_start(struct seq_file *seq, loff_t *pos) __acquires(rcu) { rcu_read_lock(); if (!*pos) return SEQ_START_TOKEN; else return kcm_get_idx(seq, *pos - 1); } static void kcm_seq_stop(struct seq_file *seq, void *v) __releases(rcu) { rcu_read_unlock(); } struct kcm_proc_mux_state { struct seq_net_private p; int idx; }; static int kcm_seq_open(struct inode *inode, struct file *file) { struct kcm_seq_muxinfo *muxinfo = PDE_DATA(inode); return seq_open_net(inode, file, &muxinfo->seq_ops, sizeof(struct kcm_proc_mux_state)); } static void kcm_format_mux_header(struct seq_file *seq) { struct net *net = seq_file_net(seq); struct kcm_net *knet = net_generic(net, kcm_net_id); seq_printf(seq, "*** KCM statistics (%d MUX) ****\n", knet->count); seq_printf(seq, "%-14s %-10s %-16s %-10s %-16s %-8s %-8s %-8s %-8s %s", "Object", "RX-Msgs", "RX-Bytes", "TX-Msgs", "TX-Bytes", "Recv-Q", "Rmem", "Send-Q", "Smem", "Status"); /* XXX: pdsts header stuff here */ seq_puts(seq, "\n"); } static void kcm_format_sock(struct kcm_sock *kcm, struct seq_file *seq, int i, int *len) { seq_printf(seq, " kcm-%-7u %-10llu %-16llu %-10llu %-16llu %-8d %-8d %-8d %-8s ", kcm->index, kcm->stats.rx_msgs, kcm->stats.rx_bytes, kcm->stats.tx_msgs, kcm->stats.tx_bytes, kcm->sk.sk_receive_queue.qlen, sk_rmem_alloc_get(&kcm->sk), kcm->sk.sk_write_queue.qlen, "-"); if (kcm->tx_psock) seq_printf(seq, "Psck-%u ", kcm->tx_psock->index); if (kcm->tx_wait) seq_puts(seq, "TxWait "); if (kcm->tx_wait_more) seq_puts(seq, "WMore "); if (kcm->rx_wait) seq_puts(seq, "RxWait "); seq_puts(seq, "\n"); } static void kcm_format_psock(struct kcm_psock *psock, struct seq_file *seq, int i, int *len) { seq_printf(seq, " psock-%-5u %-10llu %-16llu %-10llu %-16llu %-8d %-8d %-8d %-8d ", psock->index, psock->strp.stats.rx_msgs, psock->strp.stats.rx_bytes, psock->stats.tx_msgs, psock->stats.tx_bytes, psock->sk->sk_receive_queue.qlen, atomic_read(&psock->sk->sk_rmem_alloc), psock->sk->sk_write_queue.qlen, atomic_read(&psock->sk->sk_wmem_alloc)); if (psock->done) seq_puts(seq, "Done "); if (psock->tx_stopped) seq_puts(seq, "TxStop "); if (psock->strp.rx_stopped) seq_puts(seq, "RxStop "); if (psock->tx_kcm) seq_printf(seq, "Rsvd-%d ", psock->tx_kcm->index); if (!psock->strp.rx_paused && !psock->ready_rx_msg) { if (psock->sk->sk_receive_queue.qlen) { if (psock->strp.rx_need_bytes) seq_printf(seq, "RxWait=%u ", psock->strp.rx_need_bytes); else seq_printf(seq, "RxWait "); } } else { if (psock->strp.rx_paused) seq_puts(seq, "RxPause "); if (psock->ready_rx_msg) seq_puts(seq, "RdyRx "); } seq_puts(seq, "\n"); } static void kcm_format_mux(struct kcm_mux *mux, loff_t idx, struct seq_file *seq) { int i, len; struct kcm_sock *kcm; struct kcm_psock *psock; /* mux information */ seq_printf(seq, "%-6s%-8s %-10llu %-16llu %-10llu %-16llu %-8s %-8s %-8s %-8s ", "mux", "", mux->stats.rx_msgs, mux->stats.rx_bytes, mux->stats.tx_msgs, mux->stats.tx_bytes, "-", "-", "-", "-"); seq_printf(seq, "KCMs: %d, Psocks %d\n", mux->kcm_socks_cnt, mux->psocks_cnt); /* kcm sock information */ i = 0; spin_lock_bh(&mux->lock); list_for_each_entry(kcm, &mux->kcm_socks, kcm_sock_list) { kcm_format_sock(kcm, seq, i, &len); i++; } i = 0; list_for_each_entry(psock, &mux->psocks, psock_list) { kcm_format_psock(psock, seq, i, &len); i++; } spin_unlock_bh(&mux->lock); } static int kcm_seq_show(struct seq_file *seq, void *v) { struct kcm_proc_mux_state *mux_state; mux_state = seq->private; if (v == SEQ_START_TOKEN) { mux_state->idx = 0; kcm_format_mux_header(seq); } else { kcm_format_mux(v, mux_state->idx, seq); mux_state->idx++; } return 0; } static const struct file_operations kcm_seq_fops = { .owner = THIS_MODULE, .open = kcm_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_net, }; static struct kcm_seq_muxinfo kcm_seq_muxinfo = { .name = "kcm", .seq_fops = &kcm_seq_fops, .seq_ops = { .show = kcm_seq_show, .start = kcm_seq_start, .next = kcm_seq_next, .stop = kcm_seq_stop, } }; static int kcm_proc_register(struct net *net, struct kcm_seq_muxinfo *muxinfo) { struct proc_dir_entry *p; int rc = 0; p = proc_create_data(muxinfo->name, S_IRUGO, net->proc_net, muxinfo->seq_fops, muxinfo); if (!p) rc = -ENOMEM; return rc; } EXPORT_SYMBOL(kcm_proc_register); static void kcm_proc_unregister(struct net *net, struct kcm_seq_muxinfo *muxinfo) { remove_proc_entry(muxinfo->name, net->proc_net); } EXPORT_SYMBOL(kcm_proc_unregister); static int kcm_stats_seq_show(struct seq_file *seq, void *v) { struct kcm_psock_stats psock_stats; struct kcm_mux_stats mux_stats; struct strp_aggr_stats strp_stats; struct kcm_mux *mux; struct kcm_psock *psock; struct net *net = seq->private; struct kcm_net *knet = net_generic(net, kcm_net_id); memset(&mux_stats, 0, sizeof(mux_stats)); memset(&psock_stats, 0, sizeof(psock_stats)); memset(&strp_stats, 0, sizeof(strp_stats)); mutex_lock(&knet->mutex); aggregate_mux_stats(&knet->aggregate_mux_stats, &mux_stats); aggregate_psock_stats(&knet->aggregate_psock_stats, &psock_stats); aggregate_strp_stats(&knet->aggregate_strp_stats, &strp_stats); list_for_each_entry_rcu(mux, &knet->mux_list, kcm_mux_list) { spin_lock_bh(&mux->lock); aggregate_mux_stats(&mux->stats, &mux_stats); aggregate_psock_stats(&mux->aggregate_psock_stats, &psock_stats); aggregate_strp_stats(&mux->aggregate_strp_stats, &strp_stats); list_for_each_entry(psock, &mux->psocks, psock_list) { aggregate_psock_stats(&psock->stats, &psock_stats); save_strp_stats(&psock->strp, &strp_stats); } spin_unlock_bh(&mux->lock); } mutex_unlock(&knet->mutex); seq_printf(seq, "%-8s %-10s %-16s %-10s %-16s %-10s %-10s %-10s %-10s %-10s\n", "MUX", "RX-Msgs", "RX-Bytes", "TX-Msgs", "TX-Bytes", "TX-Retries", "Attach", "Unattach", "UnattchRsvd", "RX-RdyDrops"); seq_printf(seq, "%-8s %-10llu %-16llu %-10llu %-16llu %-10u %-10u %-10u %-10u %-10u\n", "", mux_stats.rx_msgs, mux_stats.rx_bytes, mux_stats.tx_msgs, mux_stats.tx_bytes, mux_stats.tx_retries, mux_stats.psock_attach, mux_stats.psock_unattach_rsvd, mux_stats.psock_unattach, mux_stats.rx_ready_drops); seq_printf(seq, "%-8s %-10s %-16s %-10s %-16s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s\n", "Psock", "RX-Msgs", "RX-Bytes", "TX-Msgs", "TX-Bytes", "Reserved", "Unreserved", "RX-Aborts", "RX-Intr", "RX-Unrecov", "RX-MemFail", "RX-NeedMor", "RX-BadLen", "RX-TooBig", "RX-Timeout", "TX-Aborts"); seq_printf(seq, "%-8s %-10llu %-16llu %-10llu %-16llu %-10llu %-10llu %-10u %-10u %-10u %-10u %-10u %-10u %-10u %-10u %-10u\n", "", strp_stats.rx_msgs, strp_stats.rx_bytes, psock_stats.tx_msgs, psock_stats.tx_bytes, psock_stats.reserved, psock_stats.unreserved, strp_stats.rx_aborts, strp_stats.rx_interrupted, strp_stats.rx_unrecov_intr, strp_stats.rx_mem_fail, strp_stats.rx_need_more_hdr, strp_stats.rx_bad_hdr_len, strp_stats.rx_msg_too_big, strp_stats.rx_msg_timeouts, psock_stats.tx_aborts); return 0; } static int kcm_stats_seq_open(struct inode *inode, struct file *file) { return single_open_net(inode, file, kcm_stats_seq_show); } static const struct file_operations kcm_stats_seq_fops = { .owner = THIS_MODULE, .open = kcm_stats_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release_net, }; static int kcm_proc_init_net(struct net *net) { int err; if (!proc_create("kcm_stats", S_IRUGO, net->proc_net, &kcm_stats_seq_fops)) { err = -ENOMEM; goto out_kcm_stats; } err = kcm_proc_register(net, &kcm_seq_muxinfo); if (err) goto out_kcm; return 0; out_kcm: remove_proc_entry("kcm_stats", net->proc_net); out_kcm_stats: return err; } static void kcm_proc_exit_net(struct net *net) { kcm_proc_unregister(net, &kcm_seq_muxinfo); remove_proc_entry("kcm_stats", net->proc_net); } static struct pernet_operations kcm_net_ops = { .init = kcm_proc_init_net, .exit = kcm_proc_exit_net, }; int __init kcm_proc_init(void) { return register_pernet_subsys(&kcm_net_ops); } void __exit kcm_proc_exit(void) { unregister_pernet_subsys(&kcm_net_ops); } #endif /* CONFIG_PROC_FS */ |