4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #define DEBUG_SUBSYSTEM S_LNET
35 #include <linux/ctype.h>
36 #include <linux/inetdevice.h>
37 #include <linux/nsproxy.h>
38 #include <net/net_namespace.h>
39 #include <lnet/lib-lnet.h>
41 /* tmp struct for parsing routes */
42 struct lnet_text_buf {
43 struct list_head ltb_list; /* stash on lists */
44 int ltb_size; /* allocated size */
45 char ltb_text[0]; /* text buffer */
48 static int lnet_tbnob = 0; /* track text buf allocation */
49 #define LNET_MAX_TEXTBUF_NOB (64<<10) /* bound allocation */
50 #define LNET_SINGLE_TEXTBUF_NOB (4<<10)
52 #define SPACESTR " \t\v\r\n"
53 #define DELIMITERS ":()[]"
56 lnet_syntax(const char *name, const char *str, int offset, int width)
58 static char dots[LNET_SINGLE_TEXTBUF_NOB];
59 static char dashes[LNET_SINGLE_TEXTBUF_NOB];
61 memset(dots, '.', sizeof(dots));
62 dots[sizeof(dots)-1] = 0;
63 memset(dashes, '-', sizeof(dashes));
64 dashes[sizeof(dashes)-1] = 0;
66 LCONSOLE_ERROR_MSG(0x10f, "Error parsing '%s=\"%s\"'\n", name, str);
67 LCONSOLE_ERROR_MSG(0x110, "here...........%.*s..%.*s|%.*s|\n",
68 (int)strlen(name), dots, offset, dots,
69 (width < 1) ? 0 : width - 1, dashes);
86 lnet_net_unique(__u32 net_id, struct list_head *netlist,
87 struct lnet_net **net)
89 struct lnet_net *net_l;
94 list_for_each_entry(net_l, netlist, net_list) {
95 if (net_l->net_id == net_id) {
105 /* check that the NI is unique within the list of NIs already added to
108 lnet_ni_unique_net(struct list_head *nilist, char *iface)
110 struct list_head *tmp;
113 list_for_each(tmp, nilist) {
114 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
116 if (ni->ni_interfaces[0] != NULL &&
117 strncmp(ni->ni_interfaces[0], iface, strlen(iface)) == 0)
124 /* check that the NI is unique to the interfaces with in the same NI.
125 * This is only a consideration if use_tcp_bonding is set */
127 lnet_ni_unique_ni(char *iface_list[LNET_INTERFACES_NUM], char *iface)
130 for (i = 0; i < LNET_INTERFACES_NUM; i++) {
131 if (iface_list[i] != NULL &&
132 strncmp(iface_list[i], iface, strlen(iface)) == 0)
140 in_array(__u32 *array, __u32 size, __u32 value)
144 for (i = 0; i < size; i++) {
145 if (array[i] == value)
153 lnet_net_append_cpts(__u32 *cpts, __u32 ncpts, struct lnet_net *net)
155 __u32 *added_cpts = NULL;
156 int i, j = 0, rc = 0;
159 * no need to go futher since a subset of the NIs already exist on
162 if (net->net_ncpts == LNET_CPT_NUMBER)
166 /* there is an NI which will exist on all CPTs */
167 if (net->net_cpts != NULL)
168 CFS_FREE_PTR_ARRAY(net->net_cpts, net->net_ncpts);
169 net->net_cpts = NULL;
170 net->net_ncpts = LNET_CPT_NUMBER;
174 if (net->net_cpts == NULL) {
175 CFS_ALLOC_PTR_ARRAY(net->net_cpts, ncpts);
176 if (net->net_cpts == NULL)
178 memcpy(net->net_cpts, cpts, ncpts * sizeof(*net->net_cpts));
179 net->net_ncpts = ncpts;
183 CFS_ALLOC_PTR_ARRAY(added_cpts, LNET_CPT_NUMBER);
184 if (added_cpts == NULL)
187 for (i = 0; i < ncpts; i++) {
188 if (!in_array(net->net_cpts, net->net_ncpts, cpts[i])) {
189 added_cpts[j] = cpts[i];
194 /* append the new cpts if any to the list of cpts in the net */
196 __u32 *array = NULL, *loc;
197 __u32 total_entries = j + net->net_ncpts;
199 CFS_ALLOC_PTR_ARRAY(array, total_entries);
205 memcpy(array, net->net_cpts,
206 net->net_ncpts * sizeof(*net->net_cpts));
207 loc = array + net->net_ncpts;
208 memcpy(loc, added_cpts, j * sizeof(*net->net_cpts));
210 CFS_FREE_PTR_ARRAY(net->net_cpts, net->net_ncpts);
211 net->net_ncpts = total_entries;
212 net->net_cpts = array;
216 CFS_FREE_PTR_ARRAY(added_cpts, LNET_CPT_NUMBER);
222 lnet_net_remove_cpts(__u32 *cpts, __u32 ncpts, struct lnet_net *net)
228 * Operation Assumption:
229 * This function is called after an NI has been removed from
232 * if we're removing an NI which exists on all CPTs then
233 * we have to check if any of the other NIs on this net also
234 * exists on all CPTs. If none, then we need to build our Net CPT
235 * list based on the remaining NIs.
237 * If the NI being removed exist on a subset of the CPTs then we
238 * alo rebuild the Net CPT list based on the remaining NIs, which
239 * should resutl in the expected Net CPT list.
243 * sometimes this function can be called due to some failure
244 * creating an NI, before any of the cpts are allocated, so check
245 * for that case and don't do anything
250 if (ncpts == LNET_CPT_NUMBER) {
252 * first iteration through the NI list in the net to see
253 * if any of the NIs exist on all the CPTs. If one is
254 * found then our job is done.
256 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
257 if (ni->ni_ncpts == LNET_CPT_NUMBER)
263 * Rebuild the Net CPT list again, thereby only including only the
264 * CPTs which the remaining NIs are associated with.
266 if (net->net_cpts != NULL) {
267 CFS_FREE_PTR_ARRAY(net->net_cpts, net->net_ncpts);
268 net->net_cpts = NULL;
271 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
272 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts,
275 CERROR("Out of Memory\n");
277 * do our best to keep on going. Delete
278 * the net cpts and set it to NULL. This
279 * way we can keep on going but less
280 * efficiently, since memory accesses might be
283 if (net->net_cpts != NULL) {
284 CFS_FREE_PTR_ARRAY(net->net_cpts,
286 net->net_cpts = NULL;
287 net->net_ncpts = LNET_CPT_NUMBER;
295 lnet_ni_free(struct lnet_ni *ni)
299 lnet_net_remove_cpts(ni->ni_cpts, ni->ni_ncpts, ni->ni_net);
301 if (ni->ni_refs != NULL)
302 cfs_percpt_free(ni->ni_refs);
304 if (ni->ni_tx_queues != NULL)
305 cfs_percpt_free(ni->ni_tx_queues);
307 if (ni->ni_cpts != NULL)
308 cfs_expr_list_values_free(ni->ni_cpts, ni->ni_ncpts);
310 for (i = 0; i < LNET_INTERFACES_NUM &&
311 ni->ni_interfaces[i] != NULL; i++) {
312 LIBCFS_FREE(ni->ni_interfaces[i],
313 strlen(ni->ni_interfaces[i]) + 1);
316 /* release reference to net namespace */
317 if (ni->ni_net_ns != NULL)
318 put_net(ni->ni_net_ns);
320 LIBCFS_FREE(ni, sizeof(*ni));
324 lnet_net_free(struct lnet_net *net)
326 struct list_head *tmp, *tmp2;
329 LASSERT(list_empty(&net->net_ni_zombie));
332 * delete any nis that haven't been added yet. This could happen
333 * if there is a failure on net startup
335 list_for_each_safe(tmp, tmp2, &net->net_ni_added) {
336 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
337 list_del_init(&ni->ni_netlist);
341 /* delete any nis which have been started. */
342 list_for_each_safe(tmp, tmp2, &net->net_ni_list) {
343 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
344 list_del_init(&ni->ni_netlist);
348 if (net->net_cpts != NULL)
349 CFS_FREE_PTR_ARRAY(net->net_cpts, net->net_ncpts);
351 LIBCFS_FREE(net, sizeof(*net));
355 lnet_net_alloc(__u32 net_id, struct list_head *net_list)
357 struct lnet_net *net;
359 if (!lnet_net_unique(net_id, net_list, NULL)) {
360 CERROR("Duplicate net %s. Ignore\n",
361 libcfs_net2str(net_id));
365 LIBCFS_ALLOC(net, sizeof(*net));
367 CERROR("Out of memory creating network %s\n",
368 libcfs_net2str(net_id));
372 INIT_LIST_HEAD(&net->net_list);
373 INIT_LIST_HEAD(&net->net_ni_list);
374 INIT_LIST_HEAD(&net->net_ni_added);
375 INIT_LIST_HEAD(&net->net_ni_zombie);
376 spin_lock_init(&net->net_lock);
378 net->net_id = net_id;
379 net->net_last_alive = ktime_get_real_seconds();
381 /* initialize global paramters to undefiend */
382 net->net_tunables.lct_peer_timeout = -1;
383 net->net_tunables.lct_max_tx_credits = -1;
384 net->net_tunables.lct_peer_tx_credits = -1;
385 net->net_tunables.lct_peer_rtr_credits = -1;
388 list_add_tail(&net->net_list, net_list);
394 lnet_ni_add_interface(struct lnet_ni *ni, char *iface)
401 if (!lnet_ni_unique_ni(ni->ni_interfaces, iface))
404 /* Allocate a separate piece of memory and copy
405 * into it the string, so we don't have
406 * a depencency on the tokens string. This way we
407 * can free the tokens at the end of the function.
408 * The newly allocated ni_interfaces[] can be
409 * freed when freeing the NI */
410 while (niface < LNET_INTERFACES_NUM &&
411 ni->ni_interfaces[niface] != NULL)
414 if (niface >= LNET_INTERFACES_NUM) {
415 LCONSOLE_ERROR_MSG(0x115, "Too many interfaces "
417 libcfs_net2str(LNET_NIDNET(ni->ni_nid)));
421 LIBCFS_ALLOC(ni->ni_interfaces[niface],
424 if (ni->ni_interfaces[niface] == NULL) {
425 CERROR("Can't allocate net interface name\n");
429 strncpy(ni->ni_interfaces[niface], iface,
435 static struct lnet_ni *
436 lnet_ni_alloc_common(struct lnet_net *net, char *iface)
438 struct lnet_tx_queue *tq;
443 /* make sure that this NI is unique in the net it's
445 if (!lnet_ni_unique_net(&net->net_ni_added, iface))
448 LIBCFS_ALLOC(ni, sizeof(*ni));
450 CERROR("Out of memory creating network interface %s%s\n",
451 libcfs_net2str(net->net_id),
452 (iface != NULL) ? iface : "");
456 spin_lock_init(&ni->ni_lock);
457 INIT_LIST_HEAD(&ni->ni_netlist);
458 INIT_LIST_HEAD(&ni->ni_recovery);
459 LNetInvalidateMDHandle(&ni->ni_ping_mdh);
460 ni->ni_refs = cfs_percpt_alloc(lnet_cpt_table(),
461 sizeof(*ni->ni_refs[0]));
462 if (ni->ni_refs == NULL)
465 ni->ni_tx_queues = cfs_percpt_alloc(lnet_cpt_table(),
466 sizeof(*ni->ni_tx_queues[0]));
467 if (ni->ni_tx_queues == NULL)
470 cfs_percpt_for_each(tq, i, ni->ni_tx_queues)
471 INIT_LIST_HEAD(&tq->tq_delayed);
474 /* LND will fill in the address part of the NID */
475 ni->ni_nid = LNET_MKNID(net->net_id, 0);
477 /* Store net namespace in which current ni is being created */
478 if (current->nsproxy && current->nsproxy->net_ns)
479 ni->ni_net_ns = get_net(current->nsproxy->net_ns);
481 ni->ni_net_ns = get_net(&init_net);
483 ni->ni_state = LNET_NI_STATE_INIT;
484 list_add_tail(&ni->ni_netlist, &net->net_ni_added);
487 * if an interface name is provided then make sure to add in that
488 * interface name in NI
491 if (lnet_ni_add_interface(ni, iface) != 0)
500 /* allocate and add to the provided network */
502 lnet_ni_alloc(struct lnet_net *net, struct cfs_expr_list *el, char *iface)
507 ni = lnet_ni_alloc_common(net, iface);
513 ni->ni_ncpts = LNET_CPT_NUMBER;
515 rc = cfs_expr_list_values(el, LNET_CPT_NUMBER, &ni->ni_cpts);
517 CERROR("Failed to set CPTs for NI %s(%s): %d\n",
518 libcfs_net2str(net->net_id),
519 (iface != NULL) ? iface : "", rc);
523 LASSERT(rc <= LNET_CPT_NUMBER);
524 if (rc == LNET_CPT_NUMBER) {
525 CFS_FREE_PTR_ARRAY(ni->ni_cpts, rc);
532 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
543 lnet_ni_alloc_w_cpt_array(struct lnet_net *net, __u32 *cpts, __u32 ncpts,
549 ni = lnet_ni_alloc_common(net, iface);
555 ni->ni_ncpts = LNET_CPT_NUMBER;
557 size_t array_size = ncpts * sizeof(ni->ni_cpts[0]);
559 CFS_ALLOC_PTR_ARRAY(ni->ni_cpts, ncpts);
560 if (ni->ni_cpts == NULL)
562 memcpy(ni->ni_cpts, cpts, array_size);
563 ni->ni_ncpts = ncpts;
566 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
577 * Parse the networks string and create the matching set of NIs on the
581 lnet_parse_networks(struct list_head *netlist, const char *networks,
582 bool use_tcp_bonding)
584 struct cfs_expr_list *net_el = NULL;
585 struct cfs_expr_list *ni_el = NULL;
589 struct lnet_net *net;
590 struct lnet_ni *ni = NULL;
594 if (networks == NULL) {
595 CERROR("networks string is undefined\n");
599 if (strlen(networks) > LNET_SINGLE_TEXTBUF_NOB) {
600 /* _WAY_ conservative */
601 LCONSOLE_ERROR_MSG(0x112, "Can't parse networks: string too "
606 tokensize = strlen(networks) + 1;
608 LIBCFS_ALLOC(tokens, tokensize);
609 if (tokens == NULL) {
610 CERROR("Can't allocate net tokens\n");
614 memcpy(tokens, networks, tokensize);
620 * NB we don't check interface conflicts here; it's the LNDs
621 * responsibility (if it cares at all)
630 * Parse a network string into its components.
632 * <name>{"("...")"}{"["<el>"]"}
635 /* Network name (mandatory) */
636 while (isspace(*str))
641 str += strcspn(str, SPACESTR ":()[],");
642 while (isspace(*str))
645 /* Interface list (optional) */
649 str += strcspn(str, ")");
656 } while (isspace(*str));
661 /* CPT expression (optional) */
664 str += strcspn(str, "]");
669 rc = cfs_expr_list_parse(elstr, str - elstr + 1,
670 0, LNET_CPT_NUMBER - 1,
679 } while (isspace(*str));
683 if (*str && (strchr(DELIMITERS, *str) != NULL))
686 /* go to the next net if it exits */
687 str += strcspn(str, ",");
692 * At this point the name is properly terminated.
694 net_id = libcfs_str2net(name);
695 if (net_id == LNET_NIDNET(LNET_NID_ANY)) {
696 LCONSOLE_ERROR_MSG(0x113,
697 "Unrecognised network type\n");
702 if (LNET_NETTYP(net_id) == LOLND) {
703 /* Loopback is implicit, and there can be only one. */
705 cfs_expr_list_free(net_el);
708 /* Should we error out instead? */
713 * All network paramaters are now known.
717 /* always allocate a net, since we will eventually add an
718 * interface to it, or we will fail, in which case we'll
720 net = lnet_net_alloc(net_id, netlist);
721 if (IS_ERR_OR_NULL(net))
725 (use_tcp_bonding && LNET_NETTYP(net_id) == SOCKLND)) {
727 * No interface list was specified, allocate a
728 * ni using the defaults.
730 ni = lnet_ni_alloc(net, net_el, NULL);
731 if (IS_ERR_OR_NULL(ni))
736 cfs_expr_list_free(net_el);
746 /* Interface name (mandatory) */
747 while (isspace(*nistr))
750 nistr += strcspn(nistr, SPACESTR "[],");
751 while (isspace(*nistr))
754 /* CPT expression (optional) */
757 nistr += strcspn(nistr, "]");
762 rc = cfs_expr_list_parse(elstr,
764 0, LNET_CPT_NUMBER - 1,
773 } while (isspace(*nistr));
779 * End of single interface specificaton,
780 * advance to the start of the next one, if
786 } while (isspace(*nistr));
797 * At this point the name is properly terminated.
804 if (use_tcp_bonding &&
805 LNET_NETTYP(net->net_id) == SOCKLND) {
806 rc = lnet_ni_add_interface(ni, name);
810 ni = lnet_ni_alloc(net, ni_el, name);
811 if (IS_ERR_OR_NULL(ni))
816 if (ni_el != net_el) {
817 cfs_expr_list_free(ni_el);
824 cfs_expr_list_free(net_el);
829 LIBCFS_FREE(tokens, tokensize);
833 lnet_syntax("networks", networks, (int)(str - tokens), strlen(str));
835 /* free the net list and all the nis on each net */
836 while (!list_empty(netlist)) {
837 net = list_entry(netlist->next, struct lnet_net, net_list);
839 list_del_init(&net->net_list);
843 if (ni_el && ni_el != net_el)
844 cfs_expr_list_free(ni_el);
846 cfs_expr_list_free(net_el);
848 LIBCFS_FREE(tokens, tokensize);
853 static struct lnet_text_buf *lnet_new_text_buf(int str_len)
855 struct lnet_text_buf *ltb;
858 /* NB allocate space for the terminating 0 */
859 nob = offsetof(struct lnet_text_buf, ltb_text[str_len + 1]);
860 if (nob > LNET_SINGLE_TEXTBUF_NOB) {
861 /* _way_ conservative for "route net gateway..." */
862 CERROR("text buffer too big\n");
866 if (lnet_tbnob + nob > LNET_MAX_TEXTBUF_NOB) {
867 CERROR("Too many text buffers\n");
871 LIBCFS_ALLOC(ltb, nob);
876 ltb->ltb_text[0] = 0;
882 lnet_free_text_buf(struct lnet_text_buf *ltb)
884 lnet_tbnob -= ltb->ltb_size;
885 LIBCFS_FREE(ltb, ltb->ltb_size);
889 lnet_free_text_bufs(struct list_head *tbs)
891 struct lnet_text_buf *ltb;
893 while (!list_empty(tbs)) {
894 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
896 list_del(<b->ltb_list);
897 lnet_free_text_buf(ltb);
902 lnet_str2tbs_sep(struct list_head *tbs, const char *str)
908 struct lnet_text_buf *ltb;
910 /* Split 'str' into separate commands */
912 /* skip leading whitespace */
913 while (isspace(*str))
916 /* scan for separator or comment */
917 for (sep = str; *sep != 0; sep++)
918 if (lnet_issep(*sep) || *sep == '#')
921 nob = (int)(sep - str);
923 ltb = lnet_new_text_buf(nob);
925 lnet_free_text_bufs(&pending);
929 for (i = 0; i < nob; i++)
931 ltb->ltb_text[i] = ' ';
933 ltb->ltb_text[i] = str[i];
935 ltb->ltb_text[nob] = 0;
937 list_add_tail(<b->ltb_list, &pending);
941 /* scan for separator */
944 } while (*sep != 0 && !lnet_issep(*sep));
953 list_splice(&pending, tbs->prev);
958 lnet_expand1tb(struct list_head *list,
959 char *str, char *sep1, char *sep2,
960 char *item, int itemlen)
962 int len1 = (int)(sep1 - str);
963 int len2 = strlen(sep2 + 1);
964 struct lnet_text_buf *ltb;
966 LASSERT (*sep1 == '[');
967 LASSERT (*sep2 == ']');
969 ltb = lnet_new_text_buf(len1 + itemlen + len2);
973 memcpy(ltb->ltb_text, str, len1);
974 memcpy(<b->ltb_text[len1], item, itemlen);
975 memcpy(<b->ltb_text[len1+itemlen], sep2 + 1, len2);
976 ltb->ltb_text[len1 + itemlen + len2] = 0;
978 list_add_tail(<b->ltb_list, list);
983 lnet_str2tbs_expand(struct list_head *tbs, char *str)
998 sep = strchr(str, '[');
999 if (sep == NULL) /* nothing to expand */
1002 sep2 = strchr(sep, ']');
1006 for (parsed = sep; parsed < sep2; parsed = enditem) {
1009 while (enditem < sep2 && *enditem != ',')
1012 if (enditem == parsed) /* no empty items */
1015 if (sscanf(parsed, "%d-%d/%d%n", &lo, &hi, &stride, &scanned) < 3) {
1017 if (sscanf(parsed, "%d-%d%n", &lo, &hi, &scanned) < 2) {
1019 /* simple string enumeration */
1020 if (lnet_expand1tb(&pending, str, sep, sep2,
1021 parsed, (int)(enditem - parsed)) != 0)
1030 /* range expansion */
1032 if (enditem != parsed + scanned) /* no trailing junk */
1035 if (hi < 0 || lo < 0 || stride < 0 || hi < lo ||
1036 (hi - lo) % stride != 0)
1039 for (i = lo; i <= hi; i += stride) {
1041 snprintf(num, sizeof(num), "%d", i);
1043 if (nob + 1 == sizeof(num))
1046 if (lnet_expand1tb(&pending, str, sep, sep2,
1052 list_splice(&pending, tbs->prev);
1056 lnet_free_text_bufs(&pending);
1061 lnet_parse_hops (char *str, unsigned int *hops)
1063 int len = strlen(str);
1066 return (sscanf(str, "%u%n", hops, &nob) >= 1 &&
1068 *hops > 0 && *hops < 256);
1071 #define LNET_PRIORITY_SEPARATOR (':')
1074 lnet_parse_priority(char *str, unsigned int *priority, char **token)
1080 sep = strchr(str, LNET_PRIORITY_SEPARATOR);
1085 len = strlen(sep + 1);
1087 if ((sscanf((sep+1), "%u%n", priority, &nob) < 1) || (len != nob)) {
1088 /* Update the caller's token pointer so it treats the found
1089 priority as the token to report in the error message. */
1090 *token += sep - str + 1;
1094 CDEBUG(D_NET, "gateway %s, priority %d, nob %d\n", str, *priority, nob);
1097 * Change priority separator to \0 to be able to parse NID
1104 lnet_parse_route(char *str, int *im_a_router)
1106 /* static scratch buffer OK (single threaded) */
1107 static char cmd[LNET_SINGLE_TEXTBUF_NOB];
1110 LIST_HEAD(gateways);
1111 struct list_head *tmp1;
1112 struct list_head *tmp2;
1115 struct lnet_text_buf *ltb;
1123 unsigned int priority = 0;
1125 /* save a copy of the string for error messages */
1126 strncpy(cmd, str, sizeof(cmd));
1127 cmd[sizeof(cmd) - 1] = '\0';
1131 /* scan for token start */
1132 while (isspace(*sep))
1135 if (ntokens < (got_hops ? 3 : 2))
1143 /* scan for token end */
1144 while (*sep != 0 && !isspace(*sep))
1150 tmp2 = &nets; /* expanding nets */
1151 } else if (ntokens == 2 &&
1152 lnet_parse_hops(token, &hops)) {
1153 got_hops = 1; /* got a hop count */
1156 tmp2 = &gateways; /* expanding gateways */
1159 ltb = lnet_new_text_buf(strlen(token));
1163 strcpy(ltb->ltb_text, token);
1164 tmp1 = <b->ltb_list;
1165 list_add_tail(tmp1, tmp2);
1167 while (tmp1 != tmp2) {
1168 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1170 rc = lnet_str2tbs_expand(tmp1->next, ltb->ltb_text);
1176 if (rc > 0) { /* expanded! */
1177 list_del(<b->ltb_list);
1178 lnet_free_text_buf(ltb);
1183 net = libcfs_str2net(ltb->ltb_text);
1184 if (net == LNET_NIDNET(LNET_NID_ANY) ||
1185 LNET_NETTYP(net) == LOLND)
1188 rc = lnet_parse_priority(ltb->ltb_text,
1193 nid = libcfs_str2nid(ltb->ltb_text);
1194 if (nid == LNET_NID_ANY || nid == LNET_NID_LO_0)
1200 /* if there are no hops set then we want to flag this value as
1201 * unset since hops is an optional parameter */
1203 hops = LNET_UNDEFINED_HOPS;
1205 LASSERT(!list_empty(&nets));
1206 LASSERT(!list_empty(&gateways));
1208 list_for_each(tmp1, &nets) {
1209 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1210 net = libcfs_str2net(ltb->ltb_text);
1211 LASSERT (net != LNET_NIDNET(LNET_NID_ANY));
1213 list_for_each(tmp2, &gateways) {
1214 ltb = list_entry(tmp2, struct lnet_text_buf, ltb_list);
1215 nid = libcfs_str2nid(ltb->ltb_text);
1216 LASSERT(nid != LNET_NID_ANY);
1218 if (lnet_islocalnid(nid)) {
1223 rc = lnet_add_route(net, hops, nid, priority, 1);
1224 if (rc != 0 && rc != -EEXIST && rc != -EHOSTUNREACH) {
1225 CERROR("Can't create route "
1227 libcfs_net2str(net),
1228 libcfs_nid2str(nid));
1238 lnet_syntax("routes", cmd, (int)(token - str), strlen(token));
1240 lnet_free_text_bufs(&nets);
1241 lnet_free_text_bufs(&gateways);
1246 lnet_parse_route_tbs(struct list_head *tbs, int *im_a_router)
1248 struct lnet_text_buf *ltb;
1250 while (!list_empty(tbs)) {
1251 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
1253 if (lnet_parse_route(ltb->ltb_text, im_a_router) < 0) {
1254 lnet_free_text_bufs(tbs);
1258 list_del(<b->ltb_list);
1259 lnet_free_text_buf(ltb);
1266 lnet_parse_routes(const char *routes, int *im_a_router)
1273 if (lnet_str2tbs_sep(&tbs, routes) < 0) {
1274 CERROR("Error parsing routes\n");
1277 rc = lnet_parse_route_tbs(&tbs, im_a_router);
1280 LASSERT (lnet_tbnob == 0);
1285 lnet_match_network_token(char *token, int len, __u32 *ipaddrs, int nip)
1291 rc = cfs_ip_addr_parse(token, len, &list);
1295 for (rc = i = 0; !rc && i < nip; i++)
1296 rc = cfs_ip_addr_match(ipaddrs[i], &list);
1298 cfs_expr_list_free_list(&list);
1304 lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip)
1306 static char tokens[LNET_SINGLE_TEXTBUF_NOB];
1316 LASSERT(strlen(net_entry) < sizeof(tokens));
1318 /* work on a copy of the string */
1319 strcpy(tokens, net_entry);
1322 /* scan for token start */
1323 while (isspace(*sep))
1330 /* scan for token end */
1331 while (*sep != 0 && !isspace(*sep))
1336 if (ntokens++ == 0) {
1341 len = strlen(token);
1343 rc = lnet_match_network_token(token, len, ipaddrs, nip);
1345 lnet_syntax("ip2nets", net_entry,
1346 (int)(token - tokens), len);
1350 matched |= (rc != 0);
1356 strcpy(net_entry, net); /* replace with matched net */
1361 lnet_netspec2net(char *netspec)
1363 char *bracket = strchr(netspec, '(');
1366 if (bracket != NULL)
1369 net = libcfs_str2net(netspec);
1371 if (bracket != NULL)
1378 lnet_splitnets(char *source, struct list_head *nets)
1383 struct lnet_text_buf *tb;
1384 struct lnet_text_buf *tb2;
1385 struct list_head *t;
1390 LASSERT(!list_empty(nets));
1391 LASSERT(nets->next == nets->prev); /* single entry */
1393 tb = list_entry(nets->next, struct lnet_text_buf, ltb_list);
1396 sep = strchr(tb->ltb_text, ',');
1397 bracket = strchr(tb->ltb_text, '(');
1402 /* netspec lists interfaces... */
1404 offset2 = offset + (int)(bracket - tb->ltb_text);
1405 len = strlen(bracket);
1407 bracket = strchr(bracket + 1, ')');
1409 if (bracket == NULL ||
1410 !(bracket[1] == ',' || bracket[1] == 0)) {
1411 lnet_syntax("ip2nets", source, offset2, len);
1415 sep = (bracket[1] == 0) ? NULL : bracket + 1;
1421 net = lnet_netspec2net(tb->ltb_text);
1422 if (net == LNET_NIDNET(LNET_NID_ANY)) {
1423 lnet_syntax("ip2nets", source, offset,
1424 strlen(tb->ltb_text));
1428 list_for_each(t, nets) {
1429 tb2 = list_entry(t, struct lnet_text_buf, ltb_list);
1434 if (net == lnet_netspec2net(tb2->ltb_text)) {
1435 /* duplicate network */
1436 lnet_syntax("ip2nets", source, offset,
1437 strlen(tb->ltb_text));
1445 offset += (int)(sep - tb->ltb_text);
1447 tb2 = lnet_new_text_buf(len);
1451 strncpy(tb2->ltb_text, sep, len);
1452 tb2->ltb_text[len] = '\0';
1453 list_add_tail(&tb2->ltb_list, nets);
1460 lnet_match_networks(const char **networksp, const char *ip2nets,
1461 __u32 *ipaddrs, int nip)
1463 static char networks[LNET_SINGLE_TEXTBUF_NOB];
1464 static char source[LNET_SINGLE_TEXTBUF_NOB];
1466 LIST_HEAD(raw_entries);
1467 LIST_HEAD(matched_nets);
1468 LIST_HEAD(current_nets);
1469 struct list_head *t;
1470 struct list_head *t2;
1471 struct lnet_text_buf *tb;
1472 struct lnet_text_buf *tb2;
1480 if (lnet_str2tbs_sep(&raw_entries, ip2nets) < 0) {
1481 CERROR("Error parsing ip2nets\n");
1482 LASSERT(lnet_tbnob == 0);
1491 while (!list_empty(&raw_entries)) {
1492 tb = list_entry(raw_entries.next, struct lnet_text_buf,
1495 strncpy(source, tb->ltb_text, sizeof(source));
1496 source[sizeof(source) - 1] = '\0';
1498 /* replace ltb_text with the network(s) add on match */
1499 rc = lnet_match_network_tokens(tb->ltb_text, ipaddrs, nip);
1503 list_del(&tb->ltb_list);
1505 if (rc == 0) { /* no match */
1506 lnet_free_text_buf(tb);
1510 /* split into separate networks */
1511 INIT_LIST_HEAD(¤t_nets);
1512 list_add(&tb->ltb_list, ¤t_nets);
1513 rc = lnet_splitnets(source, ¤t_nets);
1518 list_for_each(t, ¤t_nets) {
1519 tb = list_entry(t, struct lnet_text_buf, ltb_list);
1520 net1 = lnet_netspec2net(tb->ltb_text);
1521 LASSERT(net1 != LNET_NIDNET(LNET_NID_ANY));
1523 list_for_each(t2, &matched_nets) {
1524 tb2 = list_entry(t2, struct lnet_text_buf,
1526 net2 = lnet_netspec2net(tb2->ltb_text);
1527 LASSERT(net2 != LNET_NIDNET(LNET_NID_ANY));
1540 lnet_free_text_bufs(¤t_nets);
1544 list_for_each_safe(t, t2, ¤t_nets) {
1545 tb = list_entry(t, struct lnet_text_buf, ltb_list);
1547 list_move_tail(&tb->ltb_list, &matched_nets);
1549 len += scnprintf(networks + len, sizeof(networks) - len,
1550 "%s%s", (len == 0) ? "" : ",",
1553 if (len >= sizeof(networks)) {
1554 CERROR("Too many matched networks\n");
1564 lnet_free_text_bufs(&raw_entries);
1565 lnet_free_text_bufs(&matched_nets);
1566 lnet_free_text_bufs(¤t_nets);
1567 LASSERT(lnet_tbnob == 0);
1572 *networksp = networks;
1576 int lnet_inet_enumerate(struct lnet_inetdev **dev_list, struct net *ns)
1578 struct lnet_inetdev *ifaces = NULL;
1579 struct net_device *dev;
1582 DECLARE_CONST_IN_IFADDR(ifa);
1585 for_each_netdev(ns, dev) {
1586 int flags = dev_get_flags(dev);
1587 struct in_device *in_dev;
1591 if (flags & IFF_LOOPBACK) /* skip the loopback IF */
1594 if (!(flags & IFF_UP)) {
1595 CWARN("lnet: Ignoring interface %s: it's down\n",
1600 in_dev = __in_dev_get_rtnl(dev);
1602 CWARN("lnet: Interface %s has no IPv4 status.\n",
1607 node_id = dev_to_node(&dev->dev);
1608 cpt = cfs_cpt_of_node(lnet_cpt_table(), node_id);
1610 in_dev_for_each_ifa_rtnl(ifa, in_dev) {
1611 if (nip >= nalloc) {
1612 struct lnet_inetdev *tmp;
1614 nalloc += LNET_INTERFACES_NUM;
1615 tmp = krealloc(ifaces, nalloc * sizeof(*tmp),
1626 ifaces[nip].li_cpt = cpt;
1627 ifaces[nip].li_flags = flags;
1628 ifaces[nip].li_ipaddr = ntohl(ifa->ifa_local);
1629 ifaces[nip].li_netmask = ntohl(ifa->ifa_mask);
1630 strlcpy(ifaces[nip].li_name, ifa->ifa_label,
1631 sizeof(ifaces[nip].li_name));
1640 CERROR("lnet: Can't find any usable interfaces, rc = -ENOENT\n");
1647 EXPORT_SYMBOL(lnet_inet_enumerate);
1650 lnet_parse_ip2nets(const char **networksp, const char *ip2nets)
1652 struct lnet_inetdev *ifaces = NULL;
1653 __u32 *ipaddrs = NULL;
1658 if (current->nsproxy && current->nsproxy->net_ns)
1659 nip = lnet_inet_enumerate(&ifaces, current->nsproxy->net_ns);
1661 nip = lnet_inet_enumerate(&ifaces, &init_net);
1663 if (nip != -ENOENT) {
1664 LCONSOLE_ERROR_MSG(0x117,
1665 "Error %d enumerating local IP interfaces for ip2nets to match\n",
1668 LCONSOLE_ERROR_MSG(0x118,
1669 "No local IP interfaces for ip2nets to match\n");
1674 CFS_ALLOC_PTR_ARRAY(ipaddrs, nip);
1677 CERROR("lnet: Can't allocate ipaddrs[%d], rc = %d\n",
1679 goto out_free_addrs;
1682 for (i = 0; i < nip; i++)
1683 ipaddrs[i] = ifaces[i].li_ipaddr;
1685 rc = lnet_match_networks(networksp, ip2nets, ipaddrs, nip);
1687 LCONSOLE_ERROR_MSG(0x119, "Error %d parsing ip2nets\n", rc);
1688 } else if (rc == 0) {
1689 LCONSOLE_ERROR_MSG(0x11a, "ip2nets does not match "
1690 "any local IP interfaces\n");
1693 CFS_FREE_PTR_ARRAY(ipaddrs, nip);
1696 return rc > 0 ? 0 : rc;