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/nsproxy.h>
37 #include <net/net_namespace.h>
38 #include <lnet/lib-lnet.h>
40 /* tmp struct for parsing routes */
41 struct lnet_text_buf {
42 struct list_head ltb_list; /* stash on lists */
43 int ltb_size; /* allocated size */
44 char ltb_text[0]; /* text buffer */
47 static int lnet_tbnob = 0; /* track text buf allocation */
48 #define LNET_MAX_TEXTBUF_NOB (64<<10) /* bound allocation */
49 #define LNET_SINGLE_TEXTBUF_NOB (4<<10)
51 #define SPACESTR " \t\v\r\n"
52 #define DELIMITERS ":()[]"
55 lnet_syntax(const char *name, const char *str, int offset, int width)
57 static char dots[LNET_SINGLE_TEXTBUF_NOB];
58 static char dashes[LNET_SINGLE_TEXTBUF_NOB];
60 memset(dots, '.', sizeof(dots));
61 dots[sizeof(dots)-1] = 0;
62 memset(dashes, '-', sizeof(dashes));
63 dashes[sizeof(dashes)-1] = 0;
65 LCONSOLE_ERROR_MSG(0x10f, "Error parsing '%s=\"%s\"'\n", name, str);
66 LCONSOLE_ERROR_MSG(0x110, "here...........%.*s..%.*s|%.*s|\n",
67 (int)strlen(name), dots, offset, dots,
68 (width < 1) ? 0 : width - 1, dashes);
85 lnet_net_unique(__u32 net_id, struct list_head *netlist,
86 struct lnet_net **net)
88 struct lnet_net *net_l;
93 list_for_each_entry(net_l, netlist, net_list) {
94 if (net_l->net_id == net_id) {
104 /* check that the NI is unique within the list of NIs already added to
107 lnet_ni_unique_net(struct list_head *nilist, char *iface)
109 struct list_head *tmp;
112 list_for_each(tmp, nilist) {
113 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
115 if (ni->ni_interfaces[0] != NULL &&
116 strncmp(ni->ni_interfaces[0], iface, strlen(iface)) == 0)
123 /* check that the NI is unique to the interfaces with in the same NI.
124 * This is only a consideration if use_tcp_bonding is set */
126 lnet_ni_unique_ni(char *iface_list[LNET_INTERFACES_NUM], char *iface)
129 for (i = 0; i < LNET_INTERFACES_NUM; i++) {
130 if (iface_list[i] != NULL &&
131 strncmp(iface_list[i], iface, strlen(iface)) == 0)
139 in_array(__u32 *array, __u32 size, __u32 value)
143 for (i = 0; i < size; i++) {
144 if (array[i] == value)
152 lnet_net_append_cpts(__u32 *cpts, __u32 ncpts, struct lnet_net *net)
154 __u32 *added_cpts = NULL;
155 int i, j = 0, rc = 0;
158 * no need to go futher since a subset of the NIs already exist on
161 if (net->net_ncpts == LNET_CPT_NUMBER)
165 /* there is an NI which will exist on all CPTs */
166 if (net->net_cpts != NULL)
167 LIBCFS_FREE(net->net_cpts, sizeof(*net->net_cpts) *
169 net->net_cpts = NULL;
170 net->net_ncpts = LNET_CPT_NUMBER;
174 if (net->net_cpts == NULL) {
175 LIBCFS_ALLOC(net->net_cpts, sizeof(*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 LIBCFS_ALLOC(added_cpts, sizeof(*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 LIBCFS_ALLOC(array, sizeof(*net->net_cpts) * total_entries);
205 memcpy(array, net->net_cpts, net->net_ncpts);
206 loc = array + net->net_ncpts;
207 memcpy(loc, added_cpts, j);
209 LIBCFS_FREE(net->net_cpts, sizeof(*net->net_cpts) *
211 net->net_ncpts = total_entries;
212 net->net_cpts = array;
216 LIBCFS_FREE(added_cpts, sizeof(*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 LIBCFS_FREE(net->net_cpts,
268 sizeof(*net->net_cpts) * net->net_ncpts);
269 net->net_cpts = NULL;
272 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
273 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts,
276 CERROR("Out of Memory\n");
278 * do our best to keep on going. Delete
279 * the net cpts and set it to NULL. This
280 * way we can keep on going but less
281 * efficiently, since memory accesses might be
284 if (net->net_cpts != NULL) {
285 LIBCFS_FREE(net->net_cpts,
286 sizeof(*net->net_cpts) *
288 net->net_cpts = NULL;
289 net->net_ncpts = LNET_CPT_NUMBER;
297 lnet_ni_free(struct lnet_ni *ni)
301 lnet_net_remove_cpts(ni->ni_cpts, ni->ni_ncpts, ni->ni_net);
303 if (ni->ni_refs != NULL)
304 cfs_percpt_free(ni->ni_refs);
306 if (ni->ni_tx_queues != NULL)
307 cfs_percpt_free(ni->ni_tx_queues);
309 if (ni->ni_cpts != NULL)
310 cfs_expr_list_values_free(ni->ni_cpts, ni->ni_ncpts);
312 for (i = 0; i < LNET_INTERFACES_NUM &&
313 ni->ni_interfaces[i] != NULL; i++) {
314 LIBCFS_FREE(ni->ni_interfaces[i],
315 strlen(ni->ni_interfaces[i]) + 1);
318 /* release reference to net namespace */
319 if (ni->ni_net_ns != NULL)
320 put_net(ni->ni_net_ns);
322 LIBCFS_FREE(ni, sizeof(*ni));
326 lnet_net_free(struct lnet_net *net)
328 struct list_head *tmp, *tmp2;
331 LASSERT(list_empty(&net->net_ni_zombie));
334 * delete any nis that haven't been added yet. This could happen
335 * if there is a failure on net startup
337 list_for_each_safe(tmp, tmp2, &net->net_ni_added) {
338 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
339 list_del_init(&ni->ni_netlist);
343 /* delete any nis which have been started. */
344 list_for_each_safe(tmp, tmp2, &net->net_ni_list) {
345 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
346 list_del_init(&ni->ni_netlist);
350 if (net->net_cpts != NULL)
351 LIBCFS_FREE(net->net_cpts,
352 sizeof(*net->net_cpts) * net->net_ncpts);
354 LIBCFS_FREE(net, sizeof(*net));
358 lnet_net_alloc(__u32 net_id, struct list_head *net_list)
360 struct lnet_net *net;
362 if (!lnet_net_unique(net_id, net_list, NULL)) {
363 CERROR("Duplicate net %s. Ignore\n",
364 libcfs_net2str(net_id));
368 LIBCFS_ALLOC(net, sizeof(*net));
370 CERROR("Out of memory creating network %s\n",
371 libcfs_net2str(net_id));
375 INIT_LIST_HEAD(&net->net_list);
376 INIT_LIST_HEAD(&net->net_ni_list);
377 INIT_LIST_HEAD(&net->net_ni_added);
378 INIT_LIST_HEAD(&net->net_ni_zombie);
380 net->net_id = net_id;
381 net->net_state = LNET_NET_STATE_INIT;
383 /* initialize global paramters to undefiend */
384 net->net_tunables.lct_peer_timeout = -1;
385 net->net_tunables.lct_max_tx_credits = -1;
386 net->net_tunables.lct_peer_tx_credits = -1;
387 net->net_tunables.lct_peer_rtr_credits = -1;
390 list_add_tail(&net->net_list, net_list);
396 lnet_ni_add_interface(struct lnet_ni *ni, char *iface)
403 if (!lnet_ni_unique_ni(ni->ni_interfaces, iface))
406 /* Allocate a separate piece of memory and copy
407 * into it the string, so we don't have
408 * a depencency on the tokens string. This way we
409 * can free the tokens at the end of the function.
410 * The newly allocated ni_interfaces[] can be
411 * freed when freeing the NI */
412 while (niface < LNET_INTERFACES_NUM &&
413 ni->ni_interfaces[niface] != NULL)
416 if (niface >= LNET_INTERFACES_NUM) {
417 LCONSOLE_ERROR_MSG(0x115, "Too many interfaces "
419 libcfs_net2str(LNET_NIDNET(ni->ni_nid)));
423 LIBCFS_ALLOC(ni->ni_interfaces[niface],
426 if (ni->ni_interfaces[niface] == NULL) {
427 CERROR("Can't allocate net interface name\n");
431 strncpy(ni->ni_interfaces[niface], iface,
437 static struct lnet_ni *
438 lnet_ni_alloc_common(struct lnet_net *net, char *iface)
440 struct lnet_tx_queue *tq;
445 /* make sure that this NI is unique in the net it's
447 if (!lnet_ni_unique_net(&net->net_ni_added, iface))
450 LIBCFS_ALLOC(ni, sizeof(*ni));
452 CERROR("Out of memory creating network interface %s%s\n",
453 libcfs_net2str(net->net_id),
454 (iface != NULL) ? iface : "");
458 spin_lock_init(&ni->ni_lock);
459 INIT_LIST_HEAD(&ni->ni_netlist);
460 INIT_LIST_HEAD(&ni->ni_recovery);
461 ni->ni_refs = cfs_percpt_alloc(lnet_cpt_table(),
462 sizeof(*ni->ni_refs[0]));
463 if (ni->ni_refs == NULL)
466 ni->ni_tx_queues = cfs_percpt_alloc(lnet_cpt_table(),
467 sizeof(*ni->ni_tx_queues[0]));
468 if (ni->ni_tx_queues == NULL)
471 cfs_percpt_for_each(tq, i, ni->ni_tx_queues)
472 INIT_LIST_HEAD(&tq->tq_delayed);
475 /* LND will fill in the address part of the NID */
476 ni->ni_nid = LNET_MKNID(net->net_id, 0);
478 /* Store net namespace in which current ni is being created */
479 if (current->nsproxy->net_ns != NULL)
480 ni->ni_net_ns = get_net(current->nsproxy->net_ns);
482 ni->ni_net_ns = NULL;
484 ni->ni_last_alive = ktime_get_real_seconds();
485 ni->ni_state = LNET_NI_STATE_INIT;
486 list_add_tail(&ni->ni_netlist, &net->net_ni_added);
489 * if an interface name is provided then make sure to add in that
490 * interface name in NI
493 if (lnet_ni_add_interface(ni, iface) != 0)
502 /* allocate and add to the provided network */
504 lnet_ni_alloc(struct lnet_net *net, struct cfs_expr_list *el, char *iface)
509 ni = lnet_ni_alloc_common(net, iface);
515 ni->ni_ncpts = LNET_CPT_NUMBER;
517 rc = cfs_expr_list_values(el, LNET_CPT_NUMBER, &ni->ni_cpts);
519 CERROR("Failed to set CPTs for NI %s(%s): %d\n",
520 libcfs_net2str(net->net_id),
521 (iface != NULL) ? iface : "", rc);
525 LASSERT(rc <= LNET_CPT_NUMBER);
526 if (rc == LNET_CPT_NUMBER) {
527 LIBCFS_FREE(ni->ni_cpts, rc * sizeof(ni->ni_cpts[0]));
534 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
545 lnet_ni_alloc_w_cpt_array(struct lnet_net *net, __u32 *cpts, __u32 ncpts,
551 ni = lnet_ni_alloc_common(net, iface);
557 ni->ni_ncpts = LNET_CPT_NUMBER;
559 size_t array_size = ncpts * sizeof(ni->ni_cpts[0]);
560 LIBCFS_ALLOC(ni->ni_cpts, array_size);
561 if (ni->ni_cpts == NULL)
563 memcpy(ni->ni_cpts, cpts, array_size);
564 ni->ni_ncpts = ncpts;
567 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
578 * Parse the networks string and create the matching set of NIs on the
582 lnet_parse_networks(struct list_head *netlist, char *networks,
583 bool use_tcp_bonding)
585 struct cfs_expr_list *net_el = NULL;
586 struct cfs_expr_list *ni_el = NULL;
590 struct lnet_net *net;
591 struct lnet_ni *ni = NULL;
595 if (networks == NULL) {
596 CERROR("networks string is undefined\n");
600 if (strlen(networks) > LNET_SINGLE_TEXTBUF_NOB) {
601 /* _WAY_ conservative */
602 LCONSOLE_ERROR_MSG(0x112, "Can't parse networks: string too "
607 tokensize = strlen(networks) + 1;
609 LIBCFS_ALLOC(tokens, tokensize);
610 if (tokens == NULL) {
611 CERROR("Can't allocate net tokens\n");
615 memcpy(tokens, networks, tokensize);
621 * NB we don't check interface conflicts here; it's the LNDs
622 * responsibility (if it cares at all)
631 * Parse a network string into its components.
633 * <name>{"("...")"}{"["<el>"]"}
636 /* Network name (mandatory) */
637 while (isspace(*str))
642 str += strcspn(str, SPACESTR ":()[],");
643 while (isspace(*str))
646 /* Interface list (optional) */
650 str += strcspn(str, ")");
657 } while (isspace(*str));
662 /* CPT expression (optional) */
665 str += strcspn(str, "]");
670 rc = cfs_expr_list_parse(elstr, str - elstr + 1,
671 0, LNET_CPT_NUMBER - 1,
680 } while (isspace(*str));
684 if (*str && (strchr(DELIMITERS, *str) != NULL))
687 /* go to the next net if it exits */
688 str += strcspn(str, ",");
693 * At this point the name is properly terminated.
695 net_id = libcfs_str2net(name);
696 if (net_id == LNET_NIDNET(LNET_NID_ANY)) {
697 LCONSOLE_ERROR_MSG(0x113,
698 "Unrecognised network type\n");
703 if (LNET_NETTYP(net_id) == LOLND) {
704 /* Loopback is implicit, and there can be only one. */
706 cfs_expr_list_free(net_el);
709 /* Should we error out instead? */
714 * All network paramaters are now known.
718 /* always allocate a net, since we will eventually add an
719 * interface to it, or we will fail, in which case we'll
721 net = lnet_net_alloc(net_id, netlist);
722 if (IS_ERR_OR_NULL(net))
726 (use_tcp_bonding && LNET_NETTYP(net_id) == SOCKLND)) {
728 * No interface list was specified, allocate a
729 * ni using the defaults.
731 ni = lnet_ni_alloc(net, net_el, NULL);
732 if (IS_ERR_OR_NULL(ni))
737 cfs_expr_list_free(net_el);
747 /* Interface name (mandatory) */
748 while (isspace(*nistr))
751 nistr += strcspn(nistr, SPACESTR "[],");
752 while (isspace(*nistr))
755 /* CPT expression (optional) */
758 nistr += strcspn(nistr, "]");
763 rc = cfs_expr_list_parse(elstr,
765 0, LNET_CPT_NUMBER - 1,
774 } while (isspace(*nistr));
780 * End of single interface specificaton,
781 * advance to the start of the next one, if
787 } while (isspace(*nistr));
798 * At this point the name is properly terminated.
805 if (use_tcp_bonding &&
806 LNET_NETTYP(net->net_id) == SOCKLND) {
807 rc = lnet_ni_add_interface(ni, name);
811 ni = lnet_ni_alloc(net, ni_el, name);
812 if (IS_ERR_OR_NULL(ni))
817 if (ni_el != net_el) {
818 cfs_expr_list_free(ni_el);
825 cfs_expr_list_free(net_el);
830 LIBCFS_FREE(tokens, tokensize);
834 lnet_syntax("networks", networks, (int)(str - tokens), strlen(str));
836 /* free the net list and all the nis on each net */
837 while (!list_empty(netlist)) {
838 net = list_entry(netlist->next, struct lnet_net, net_list);
840 list_del_init(&net->net_list);
844 if (ni_el && ni_el != net_el)
845 cfs_expr_list_free(ni_el);
847 cfs_expr_list_free(net_el);
849 LIBCFS_FREE(tokens, tokensize);
854 static struct lnet_text_buf *lnet_new_text_buf(int str_len)
856 struct lnet_text_buf *ltb;
859 /* NB allocate space for the terminating 0 */
860 nob = offsetof(struct lnet_text_buf, ltb_text[str_len + 1]);
861 if (nob > LNET_SINGLE_TEXTBUF_NOB) {
862 /* _way_ conservative for "route net gateway..." */
863 CERROR("text buffer too big\n");
867 if (lnet_tbnob + nob > LNET_MAX_TEXTBUF_NOB) {
868 CERROR("Too many text buffers\n");
872 LIBCFS_ALLOC(ltb, nob);
877 ltb->ltb_text[0] = 0;
883 lnet_free_text_buf(struct lnet_text_buf *ltb)
885 lnet_tbnob -= ltb->ltb_size;
886 LIBCFS_FREE(ltb, ltb->ltb_size);
890 lnet_free_text_bufs(struct list_head *tbs)
892 struct lnet_text_buf *ltb;
894 while (!list_empty(tbs)) {
895 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
897 list_del(<b->ltb_list);
898 lnet_free_text_buf(ltb);
903 lnet_print_text_bufs(struct list_head *tbs)
905 struct list_head *tmp;
906 struct lnet_text_buf *ltb;
908 list_for_each(tmp, tbs) {
909 ltb = list_entry(tmp, struct lnet_text_buf, ltb_list);
911 CDEBUG(D_WARNING, "%s\n", ltb->ltb_text);
914 CDEBUG(D_WARNING, "%d allocated\n", lnet_tbnob);
918 lnet_str2tbs_sep(struct list_head *tbs, char *str)
920 struct list_head pending;
924 struct lnet_text_buf *ltb;
926 INIT_LIST_HEAD(&pending);
928 /* Split 'str' into separate commands */
930 /* skip leading whitespace */
931 while (isspace(*str))
934 /* scan for separator or comment */
935 for (sep = str; *sep != 0; sep++)
936 if (lnet_issep(*sep) || *sep == '#')
939 nob = (int)(sep - str);
941 ltb = lnet_new_text_buf(nob);
943 lnet_free_text_bufs(&pending);
947 for (i = 0; i < nob; i++)
949 ltb->ltb_text[i] = ' ';
951 ltb->ltb_text[i] = str[i];
953 ltb->ltb_text[nob] = 0;
955 list_add_tail(<b->ltb_list, &pending);
959 /* scan for separator */
962 } while (*sep != 0 && !lnet_issep(*sep));
971 list_splice(&pending, tbs->prev);
976 lnet_expand1tb(struct list_head *list,
977 char *str, char *sep1, char *sep2,
978 char *item, int itemlen)
980 int len1 = (int)(sep1 - str);
981 int len2 = strlen(sep2 + 1);
982 struct lnet_text_buf *ltb;
984 LASSERT (*sep1 == '[');
985 LASSERT (*sep2 == ']');
987 ltb = lnet_new_text_buf(len1 + itemlen + len2);
991 memcpy(ltb->ltb_text, str, len1);
992 memcpy(<b->ltb_text[len1], item, itemlen);
993 memcpy(<b->ltb_text[len1+itemlen], sep2 + 1, len2);
994 ltb->ltb_text[len1 + itemlen + len2] = 0;
996 list_add_tail(<b->ltb_list, list);
1001 lnet_str2tbs_expand(struct list_head *tbs, char *str)
1004 struct list_head pending;
1016 INIT_LIST_HEAD(&pending);
1018 sep = strchr(str, '[');
1019 if (sep == NULL) /* nothing to expand */
1022 sep2 = strchr(sep, ']');
1026 for (parsed = sep; parsed < sep2; parsed = enditem) {
1029 while (enditem < sep2 && *enditem != ',')
1032 if (enditem == parsed) /* no empty items */
1035 if (sscanf(parsed, "%d-%d/%d%n", &lo, &hi, &stride, &scanned) < 3) {
1037 if (sscanf(parsed, "%d-%d%n", &lo, &hi, &scanned) < 2) {
1039 /* simple string enumeration */
1040 if (lnet_expand1tb(&pending, str, sep, sep2,
1041 parsed, (int)(enditem - parsed)) != 0)
1050 /* range expansion */
1052 if (enditem != parsed + scanned) /* no trailing junk */
1055 if (hi < 0 || lo < 0 || stride < 0 || hi < lo ||
1056 (hi - lo) % stride != 0)
1059 for (i = lo; i <= hi; i += stride) {
1061 snprintf(num, sizeof(num), "%d", i);
1063 if (nob + 1 == sizeof(num))
1066 if (lnet_expand1tb(&pending, str, sep, sep2,
1072 list_splice(&pending, tbs->prev);
1076 lnet_free_text_bufs(&pending);
1081 lnet_parse_hops (char *str, unsigned int *hops)
1083 int len = strlen(str);
1086 return (sscanf(str, "%u%n", hops, &nob) >= 1 &&
1088 *hops > 0 && *hops < 256);
1091 #define LNET_PRIORITY_SEPARATOR (':')
1094 lnet_parse_priority(char *str, unsigned int *priority, char **token)
1100 sep = strchr(str, LNET_PRIORITY_SEPARATOR);
1105 len = strlen(sep + 1);
1107 if ((sscanf((sep+1), "%u%n", priority, &nob) < 1) || (len != nob)) {
1108 /* Update the caller's token pointer so it treats the found
1109 priority as the token to report in the error message. */
1110 *token += sep - str + 1;
1114 CDEBUG(D_NET, "gateway %s, priority %d, nob %d\n", str, *priority, nob);
1117 * Change priority separator to \0 to be able to parse NID
1124 lnet_parse_route (char *str, int *im_a_router)
1126 /* static scratch buffer OK (single threaded) */
1127 static char cmd[LNET_SINGLE_TEXTBUF_NOB];
1129 struct list_head nets;
1130 struct list_head gateways;
1131 struct list_head *tmp1;
1132 struct list_head *tmp2;
1135 struct lnet_text_buf *ltb;
1143 unsigned int priority = 0;
1145 INIT_LIST_HEAD(&gateways);
1146 INIT_LIST_HEAD(&nets);
1148 /* save a copy of the string for error messages */
1149 strncpy(cmd, str, sizeof(cmd));
1150 cmd[sizeof(cmd) - 1] = '\0';
1154 /* scan for token start */
1155 while (isspace(*sep))
1158 if (ntokens < (got_hops ? 3 : 2))
1166 /* scan for token end */
1167 while (*sep != 0 && !isspace(*sep))
1173 tmp2 = &nets; /* expanding nets */
1174 } else if (ntokens == 2 &&
1175 lnet_parse_hops(token, &hops)) {
1176 got_hops = 1; /* got a hop count */
1179 tmp2 = &gateways; /* expanding gateways */
1182 ltb = lnet_new_text_buf(strlen(token));
1186 strcpy(ltb->ltb_text, token);
1187 tmp1 = <b->ltb_list;
1188 list_add_tail(tmp1, tmp2);
1190 while (tmp1 != tmp2) {
1191 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1193 rc = lnet_str2tbs_expand(tmp1->next, ltb->ltb_text);
1199 if (rc > 0) { /* expanded! */
1200 list_del(<b->ltb_list);
1201 lnet_free_text_buf(ltb);
1206 net = libcfs_str2net(ltb->ltb_text);
1207 if (net == LNET_NIDNET(LNET_NID_ANY) ||
1208 LNET_NETTYP(net) == LOLND)
1211 rc = lnet_parse_priority(ltb->ltb_text,
1216 nid = libcfs_str2nid(ltb->ltb_text);
1217 if (nid == LNET_NID_ANY ||
1218 LNET_NETTYP(LNET_NIDNET(nid)) == LOLND)
1224 /* if there are no hops set then we want to flag this value as
1225 * unset since hops is an optional parameter */
1227 hops = LNET_UNDEFINED_HOPS;
1229 LASSERT(!list_empty(&nets));
1230 LASSERT(!list_empty(&gateways));
1232 list_for_each(tmp1, &nets) {
1233 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1234 net = libcfs_str2net(ltb->ltb_text);
1235 LASSERT (net != LNET_NIDNET(LNET_NID_ANY));
1237 list_for_each(tmp2, &gateways) {
1238 ltb = list_entry(tmp2, struct lnet_text_buf, ltb_list);
1239 nid = libcfs_str2nid(ltb->ltb_text);
1240 LASSERT(nid != LNET_NID_ANY);
1242 if (lnet_islocalnid(nid)) {
1247 rc = lnet_add_route(net, hops, nid, priority);
1248 if (rc != 0 && rc != -EEXIST && rc != -EHOSTUNREACH) {
1249 CERROR("Can't create route "
1251 libcfs_net2str(net),
1252 libcfs_nid2str(nid));
1262 lnet_syntax("routes", cmd, (int)(token - str), strlen(token));
1264 lnet_free_text_bufs(&nets);
1265 lnet_free_text_bufs(&gateways);
1270 lnet_parse_route_tbs(struct list_head *tbs, int *im_a_router)
1272 struct lnet_text_buf *ltb;
1274 while (!list_empty(tbs)) {
1275 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
1277 if (lnet_parse_route(ltb->ltb_text, im_a_router) < 0) {
1278 lnet_free_text_bufs(tbs);
1282 list_del(<b->ltb_list);
1283 lnet_free_text_buf(ltb);
1290 lnet_parse_routes (char *routes, int *im_a_router)
1292 struct list_head tbs;
1297 INIT_LIST_HEAD(&tbs);
1299 if (lnet_str2tbs_sep(&tbs, routes) < 0) {
1300 CERROR("Error parsing routes\n");
1303 rc = lnet_parse_route_tbs(&tbs, im_a_router);
1306 LASSERT (lnet_tbnob == 0);
1311 lnet_match_network_token(char *token, int len, __u32 *ipaddrs, int nip)
1313 struct list_head list = LIST_HEAD_INIT(list);
1317 rc = cfs_ip_addr_parse(token, len, &list);
1321 for (rc = i = 0; !rc && i < nip; i++)
1322 rc = cfs_ip_addr_match(ipaddrs[i], &list);
1324 cfs_expr_list_free_list(&list);
1330 lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip)
1332 static char tokens[LNET_SINGLE_TEXTBUF_NOB];
1342 LASSERT(strlen(net_entry) < sizeof(tokens));
1344 /* work on a copy of the string */
1345 strcpy(tokens, net_entry);
1348 /* scan for token start */
1349 while (isspace(*sep))
1356 /* scan for token end */
1357 while (*sep != 0 && !isspace(*sep))
1362 if (ntokens++ == 0) {
1367 len = strlen(token);
1369 rc = lnet_match_network_token(token, len, ipaddrs, nip);
1371 lnet_syntax("ip2nets", net_entry,
1372 (int)(token - tokens), len);
1376 matched |= (rc != 0);
1382 strcpy(net_entry, net); /* replace with matched net */
1387 lnet_netspec2net(char *netspec)
1389 char *bracket = strchr(netspec, '(');
1392 if (bracket != NULL)
1395 net = libcfs_str2net(netspec);
1397 if (bracket != NULL)
1404 lnet_splitnets(char *source, struct list_head *nets)
1409 struct lnet_text_buf *tb;
1410 struct lnet_text_buf *tb2;
1411 struct list_head *t;
1416 LASSERT(!list_empty(nets));
1417 LASSERT(nets->next == nets->prev); /* single entry */
1419 tb = list_entry(nets->next, struct lnet_text_buf, ltb_list);
1422 sep = strchr(tb->ltb_text, ',');
1423 bracket = strchr(tb->ltb_text, '(');
1428 /* netspec lists interfaces... */
1430 offset2 = offset + (int)(bracket - tb->ltb_text);
1431 len = strlen(bracket);
1433 bracket = strchr(bracket + 1, ')');
1435 if (bracket == NULL ||
1436 !(bracket[1] == ',' || bracket[1] == 0)) {
1437 lnet_syntax("ip2nets", source, offset2, len);
1441 sep = (bracket[1] == 0) ? NULL : bracket + 1;
1447 net = lnet_netspec2net(tb->ltb_text);
1448 if (net == LNET_NIDNET(LNET_NID_ANY)) {
1449 lnet_syntax("ip2nets", source, offset,
1450 strlen(tb->ltb_text));
1454 list_for_each(t, nets) {
1455 tb2 = list_entry(t, struct lnet_text_buf, ltb_list);
1460 if (net == lnet_netspec2net(tb2->ltb_text)) {
1461 /* duplicate network */
1462 lnet_syntax("ip2nets", source, offset,
1463 strlen(tb->ltb_text));
1471 offset += (int)(sep - tb->ltb_text);
1473 tb2 = lnet_new_text_buf(len);
1477 strncpy(tb2->ltb_text, sep, len);
1478 tb2->ltb_text[len] = '\0';
1479 list_add_tail(&tb2->ltb_list, nets);
1486 lnet_match_networks (char **networksp, char *ip2nets, __u32 *ipaddrs, int nip)
1488 static char networks[LNET_SINGLE_TEXTBUF_NOB];
1489 static char source[LNET_SINGLE_TEXTBUF_NOB];
1491 struct list_head raw_entries;
1492 struct list_head matched_nets;
1493 struct list_head current_nets;
1494 struct list_head *t;
1495 struct list_head *t2;
1496 struct lnet_text_buf *tb;
1497 struct lnet_text_buf *tb2;
1505 INIT_LIST_HEAD(&raw_entries);
1506 if (lnet_str2tbs_sep(&raw_entries, ip2nets) < 0) {
1507 CERROR("Error parsing ip2nets\n");
1508 LASSERT(lnet_tbnob == 0);
1512 INIT_LIST_HEAD(&matched_nets);
1513 INIT_LIST_HEAD(¤t_nets);
1519 while (!list_empty(&raw_entries)) {
1520 tb = list_entry(raw_entries.next, struct lnet_text_buf,
1523 strncpy(source, tb->ltb_text, sizeof(source));
1524 source[sizeof(source) - 1] = '\0';
1526 /* replace ltb_text with the network(s) add on match */
1527 rc = lnet_match_network_tokens(tb->ltb_text, ipaddrs, nip);
1531 list_del(&tb->ltb_list);
1533 if (rc == 0) { /* no match */
1534 lnet_free_text_buf(tb);
1538 /* split into separate networks */
1539 INIT_LIST_HEAD(¤t_nets);
1540 list_add(&tb->ltb_list, ¤t_nets);
1541 rc = lnet_splitnets(source, ¤t_nets);
1546 list_for_each(t, ¤t_nets) {
1547 tb = list_entry(t, struct lnet_text_buf, ltb_list);
1548 net1 = lnet_netspec2net(tb->ltb_text);
1549 LASSERT(net1 != LNET_NIDNET(LNET_NID_ANY));
1551 list_for_each(t2, &matched_nets) {
1552 tb2 = list_entry(t2, struct lnet_text_buf,
1554 net2 = lnet_netspec2net(tb2->ltb_text);
1555 LASSERT(net2 != LNET_NIDNET(LNET_NID_ANY));
1568 lnet_free_text_bufs(¤t_nets);
1572 list_for_each_safe(t, t2, ¤t_nets) {
1573 tb = list_entry(t, struct lnet_text_buf, ltb_list);
1575 list_del(&tb->ltb_list);
1576 list_add_tail(&tb->ltb_list, &matched_nets);
1578 len += snprintf(networks + len, sizeof(networks) - len,
1579 "%s%s", (len == 0) ? "" : ",",
1582 if (len >= sizeof(networks)) {
1583 CERROR("Too many matched networks\n");
1593 lnet_free_text_bufs(&raw_entries);
1594 lnet_free_text_bufs(&matched_nets);
1595 lnet_free_text_bufs(¤t_nets);
1596 LASSERT(lnet_tbnob == 0);
1601 *networksp = networks;
1606 lnet_ipaddr_free_enumeration(__u32 *ipaddrs, int nip)
1608 LIBCFS_FREE(ipaddrs, nip * sizeof(*ipaddrs));
1612 lnet_ipaddr_enumerate (__u32 **ipaddrsp)
1620 int nif = lnet_ipif_enumerate(&ifnames);
1627 LIBCFS_ALLOC(ipaddrs, nif * sizeof(*ipaddrs));
1628 if (ipaddrs == NULL) {
1629 CERROR("Can't allocate ipaddrs[%d]\n", nif);
1630 lnet_ipif_free_enumeration(ifnames, nif);
1634 for (i = nip = 0; i < nif; i++) {
1635 if (!strcmp(ifnames[i], "lo"))
1638 rc = lnet_ipif_query(ifnames[i], &up,
1639 &ipaddrs[nip], &netmask);
1641 CWARN("Can't query interface %s: %d\n",
1647 CWARN("Ignoring interface %s: it's down\n",
1655 lnet_ipif_free_enumeration(ifnames, nif);
1658 *ipaddrsp = ipaddrs;
1661 LIBCFS_ALLOC(ipaddrs2, nip * sizeof(*ipaddrs2));
1662 if (ipaddrs2 == NULL) {
1663 CERROR("Can't allocate ipaddrs[%d]\n", nip);
1666 memcpy(ipaddrs2, ipaddrs,
1667 nip * sizeof(*ipaddrs));
1668 *ipaddrsp = ipaddrs2;
1672 lnet_ipaddr_free_enumeration(ipaddrs, nif);
1678 lnet_parse_ip2nets (char **networksp, char *ip2nets)
1680 __u32 *ipaddrs = NULL;
1681 int nip = lnet_ipaddr_enumerate(&ipaddrs);
1685 LCONSOLE_ERROR_MSG(0x117, "Error %d enumerating local IP "
1686 "interfaces for ip2nets to match\n", nip);
1691 LCONSOLE_ERROR_MSG(0x118, "No local IP interfaces "
1692 "for ip2nets to match\n");
1696 rc = lnet_match_networks(networksp, ip2nets, ipaddrs, nip);
1697 lnet_ipaddr_free_enumeration(ipaddrs, nip);
1700 LCONSOLE_ERROR_MSG(0x119, "Error %d parsing ip2nets\n", rc);
1705 LCONSOLE_ERROR_MSG(0x11a, "ip2nets does not match "
1706 "any local IP interfaces\n");