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, 2016, 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
34 #include <linux/nsproxy.h>
35 #include <net/net_namespace.h>
36 #include <lnet/lib-lnet.h>
38 /* tmp struct for parsing routes */
39 struct lnet_text_buf {
40 struct list_head ltb_list; /* stash on lists */
41 int ltb_size; /* allocated size */
42 char ltb_text[0]; /* text buffer */
45 static int lnet_tbnob = 0; /* track text buf allocation */
46 #define LNET_MAX_TEXTBUF_NOB (64<<10) /* bound allocation */
47 #define LNET_SINGLE_TEXTBUF_NOB (4<<10)
49 #define SPACESTR " \t\v\r\n"
50 #define DELIMITERS ":()[]"
53 lnet_syntax(const char *name, const char *str, int offset, int width)
55 static char dots[LNET_SINGLE_TEXTBUF_NOB];
56 static char dashes[LNET_SINGLE_TEXTBUF_NOB];
58 memset(dots, '.', sizeof(dots));
59 dots[sizeof(dots)-1] = 0;
60 memset(dashes, '-', sizeof(dashes));
61 dashes[sizeof(dashes)-1] = 0;
63 LCONSOLE_ERROR_MSG(0x10f, "Error parsing '%s=\"%s\"'\n", name, str);
64 LCONSOLE_ERROR_MSG(0x110, "here...........%.*s..%.*s|%.*s|\n",
65 (int)strlen(name), dots, offset, dots,
66 (width < 1) ? 0 : width - 1, dashes);
83 lnet_net_unique(__u32 net_id, struct list_head *netlist,
84 struct lnet_net **net)
86 struct lnet_net *net_l;
91 list_for_each_entry(net_l, netlist, net_list) {
92 if (net_l->net_id == net_id) {
102 /* check that the NI is unique within the list of NIs already added to
105 lnet_ni_unique_net(struct list_head *nilist, char *iface)
107 struct list_head *tmp;
110 list_for_each(tmp, nilist) {
111 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
113 if (ni->ni_interfaces[0] != NULL &&
114 strncmp(ni->ni_interfaces[0], iface, strlen(iface)) == 0)
121 /* check that the NI is unique to the interfaces with in the same NI.
122 * This is only a consideration if use_tcp_bonding is set */
124 lnet_ni_unique_ni(char *iface_list[LNET_NUM_INTERFACES], char *iface)
127 for (i = 0; i < LNET_NUM_INTERFACES; i++) {
128 if (iface_list[i] != NULL &&
129 strncmp(iface_list[i], iface, strlen(iface)) == 0)
137 in_array(__u32 *array, __u32 size, __u32 value)
141 for (i = 0; i < size; i++) {
142 if (array[i] == value)
150 lnet_net_append_cpts(__u32 *cpts, __u32 ncpts, struct lnet_net *net)
152 __u32 *added_cpts = NULL;
153 int i, j = 0, rc = 0;
156 * no need to go futher since a subset of the NIs already exist on
159 if (net->net_ncpts == LNET_CPT_NUMBER)
163 /* there is an NI which will exist on all CPTs */
164 if (net->net_cpts != NULL)
165 LIBCFS_FREE(net->net_cpts, sizeof(*net->net_cpts) *
167 net->net_cpts = NULL;
168 net->net_ncpts = LNET_CPT_NUMBER;
172 if (net->net_cpts == NULL) {
173 LIBCFS_ALLOC(net->net_cpts, sizeof(*net->net_cpts) * ncpts);
174 if (net->net_cpts == NULL)
176 memcpy(net->net_cpts, cpts, ncpts);
177 net->net_ncpts = ncpts;
181 LIBCFS_ALLOC(added_cpts, sizeof(*added_cpts) * LNET_CPT_NUMBER);
182 if (added_cpts == NULL)
185 for (i = 0; i < ncpts; i++) {
186 if (!in_array(net->net_cpts, net->net_ncpts, cpts[i])) {
187 added_cpts[j] = cpts[i];
192 /* append the new cpts if any to the list of cpts in the net */
194 __u32 *array = NULL, *loc;
195 __u32 total_entries = j + net->net_ncpts;
197 LIBCFS_ALLOC(array, sizeof(*net->net_cpts) * total_entries);
203 memcpy(array, net->net_cpts, net->net_ncpts);
204 loc = array + net->net_ncpts;
205 memcpy(loc, added_cpts, j);
207 LIBCFS_FREE(net->net_cpts, sizeof(*net->net_cpts) *
209 net->net_ncpts = total_entries;
210 net->net_cpts = array;
214 LIBCFS_FREE(added_cpts, sizeof(*added_cpts) * LNET_CPT_NUMBER);
220 lnet_net_remove_cpts(__u32 *cpts, __u32 ncpts, struct lnet_net *net)
226 * Operation Assumption:
227 * This function is called after an NI has been removed from
230 * if we're removing an NI which exists on all CPTs then
231 * we have to check if any of the other NIs on this net also
232 * exists on all CPTs. If none, then we need to build our Net CPT
233 * list based on the remaining NIs.
235 * If the NI being removed exist on a subset of the CPTs then we
236 * alo rebuild the Net CPT list based on the remaining NIs, which
237 * should resutl in the expected Net CPT list.
241 * sometimes this function can be called due to some failure
242 * creating an NI, before any of the cpts are allocated, so check
243 * for that case and don't do anything
248 if (ncpts == LNET_CPT_NUMBER) {
250 * first iteration through the NI list in the net to see
251 * if any of the NIs exist on all the CPTs. If one is
252 * found then our job is done.
254 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
255 if (ni->ni_ncpts == LNET_CPT_NUMBER)
261 * Rebuild the Net CPT list again, thereby only including only the
262 * CPTs which the remaining NIs are associated with.
264 if (net->net_cpts != NULL) {
265 LIBCFS_FREE(net->net_cpts,
266 sizeof(*net->net_cpts) * net->net_ncpts);
267 net->net_cpts = NULL;
270 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
271 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts,
274 CERROR("Out of Memory\n");
276 * do our best to keep on going. Delete
277 * the net cpts and set it to NULL. This
278 * way we can keep on going but less
279 * efficiently, since memory accesses might be
282 if (net->net_cpts != NULL) {
283 LIBCFS_FREE(net->net_cpts,
284 sizeof(*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_NUM_INTERFACES &&
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 LIBCFS_FREE(net->net_cpts,
350 sizeof(*net->net_cpts) * net->net_ncpts);
352 LIBCFS_FREE(net, sizeof(*net));
356 lnet_net_alloc(__u32 net_id, struct list_head *net_list)
358 struct lnet_net *net;
360 if (!lnet_net_unique(net_id, net_list, NULL)) {
361 CERROR("Duplicate net %s. Ignore\n",
362 libcfs_net2str(net_id));
366 LIBCFS_ALLOC(net, sizeof(*net));
368 CERROR("Out of memory creating network %s\n",
369 libcfs_net2str(net_id));
373 INIT_LIST_HEAD(&net->net_list);
374 INIT_LIST_HEAD(&net->net_ni_list);
375 INIT_LIST_HEAD(&net->net_ni_added);
376 INIT_LIST_HEAD(&net->net_ni_zombie);
378 net->net_id = net_id;
379 net->net_state = LNET_NET_STATE_INIT;
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_NUM_INTERFACES &&
411 ni->ni_interfaces[niface] != NULL)
414 if (niface >= LNET_NUM_INTERFACES) {
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_cptlist);
458 INIT_LIST_HEAD(&ni->ni_netlist);
459 ni->ni_refs = cfs_percpt_alloc(lnet_cpt_table(),
460 sizeof(*ni->ni_refs[0]));
461 if (ni->ni_refs == NULL)
464 ni->ni_tx_queues = cfs_percpt_alloc(lnet_cpt_table(),
465 sizeof(*ni->ni_tx_queues[0]));
466 if (ni->ni_tx_queues == NULL)
469 cfs_percpt_for_each(tq, i, ni->ni_tx_queues)
470 INIT_LIST_HEAD(&tq->tq_delayed);
473 /* LND will fill in the address part of the NID */
474 ni->ni_nid = LNET_MKNID(net->net_id, 0);
476 /* Store net namespace in which current ni is being created */
477 if (current->nsproxy->net_ns != NULL)
478 ni->ni_net_ns = get_net(current->nsproxy->net_ns);
480 ni->ni_net_ns = NULL;
482 ni->ni_last_alive = ktime_get_real_seconds();
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 LIBCFS_FREE(ni->ni_cpts, rc * sizeof(ni->ni_cpts[0]));
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]);
558 LIBCFS_ALLOC(ni->ni_cpts, array_size);
559 if (ni->ni_cpts == NULL)
561 memcpy(ni->ni_cpts, cpts, array_size);
562 ni->ni_ncpts = ncpts;
565 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
576 * Parse the networks string and create the matching set of NIs on the
580 lnet_parse_networks(struct list_head *netlist, char *networks,
581 bool use_tcp_bonding)
583 struct cfs_expr_list *net_el = NULL;
584 struct cfs_expr_list *ni_el = NULL;
588 struct lnet_net *net;
589 struct lnet_ni *ni = NULL;
593 if (networks == NULL) {
594 CERROR("networks string is undefined\n");
598 if (strlen(networks) > LNET_SINGLE_TEXTBUF_NOB) {
599 /* _WAY_ conservative */
600 LCONSOLE_ERROR_MSG(0x112, "Can't parse networks: string too "
605 tokensize = strlen(networks) + 1;
607 LIBCFS_ALLOC(tokens, tokensize);
608 if (tokens == NULL) {
609 CERROR("Can't allocate net tokens\n");
613 memcpy(tokens, networks, tokensize);
619 * NB we don't check interface conflicts here; it's the LNDs
620 * responsibility (if it cares at all)
629 * Parse a network string into its components.
631 * <name>{"("...")"}{"["<el>"]"}
634 /* Network name (mandatory) */
635 while (isspace(*str))
640 str += strcspn(str, SPACESTR ":()[],");
641 while (isspace(*str))
644 /* Interface list (optional) */
648 str += strcspn(str, ")");
655 } while (isspace(*str));
660 /* CPT expression (optional) */
663 str += strcspn(str, "]");
668 rc = cfs_expr_list_parse(elstr, str - elstr + 1,
669 0, LNET_CPT_NUMBER - 1,
678 } while (isspace(*str));
682 if (*str && (strchr(DELIMITERS, *str) != NULL))
685 /* go to the next net if it exits */
686 str += strcspn(str, ",");
691 * At this point the name is properly terminated.
693 net_id = libcfs_str2net(name);
694 if (net_id == LNET_NIDNET(LNET_NID_ANY)) {
695 LCONSOLE_ERROR_MSG(0x113,
696 "Unrecognised network type\n");
701 if (LNET_NETTYP(net_id) == LOLND) {
702 /* Loopback is implicit, and there can be only one. */
704 cfs_expr_list_free(net_el);
707 /* Should we error out instead? */
712 * All network paramaters are now known.
716 /* always allocate a net, since we will eventually add an
717 * interface to it, or we will fail, in which case we'll
719 net = lnet_net_alloc(net_id, netlist);
720 if (IS_ERR_OR_NULL(net))
724 (use_tcp_bonding && LNET_NETTYP(net_id) == SOCKLND)) {
726 * No interface list was specified, allocate a
727 * ni using the defaults.
729 ni = lnet_ni_alloc(net, net_el, NULL);
730 if (IS_ERR_OR_NULL(ni))
735 cfs_expr_list_free(net_el);
745 /* Interface name (mandatory) */
746 while (isspace(*nistr))
749 nistr += strcspn(nistr, SPACESTR "[],");
750 while (isspace(*nistr))
753 /* CPT expression (optional) */
756 nistr += strcspn(nistr, "]");
761 rc = cfs_expr_list_parse(elstr,
763 0, LNET_CPT_NUMBER - 1,
772 } while (isspace(*nistr));
778 * End of single interface specificaton,
779 * advance to the start of the next one, if
785 } while (isspace(*nistr));
796 * At this point the name is properly terminated.
803 if (use_tcp_bonding &&
804 LNET_NETTYP(net->net_id) == SOCKLND) {
805 rc = lnet_ni_add_interface(ni, name);
809 ni = lnet_ni_alloc(net, ni_el, name);
810 if (IS_ERR_OR_NULL(ni))
815 if (ni_el != net_el) {
816 cfs_expr_list_free(ni_el);
823 cfs_expr_list_free(net_el);
828 LIBCFS_FREE(tokens, tokensize);
832 lnet_syntax("networks", networks, (int)(str - tokens), strlen(str));
834 /* free the net list and all the nis on each net */
835 while (!list_empty(netlist)) {
836 net = list_entry(netlist->next, struct lnet_net, net_list);
838 list_del_init(&net->net_list);
842 if (ni_el && ni_el != net_el)
843 cfs_expr_list_free(ni_el);
845 cfs_expr_list_free(net_el);
847 LIBCFS_FREE(tokens, tokensize);
852 static struct lnet_text_buf *lnet_new_text_buf(int str_len)
854 struct lnet_text_buf *ltb;
857 /* NB allocate space for the terminating 0 */
858 nob = offsetof(struct lnet_text_buf, ltb_text[str_len + 1]);
859 if (nob > LNET_SINGLE_TEXTBUF_NOB) {
860 /* _way_ conservative for "route net gateway..." */
861 CERROR("text buffer too big\n");
865 if (lnet_tbnob + nob > LNET_MAX_TEXTBUF_NOB) {
866 CERROR("Too many text buffers\n");
870 LIBCFS_ALLOC(ltb, nob);
875 ltb->ltb_text[0] = 0;
881 lnet_free_text_buf(struct lnet_text_buf *ltb)
883 lnet_tbnob -= ltb->ltb_size;
884 LIBCFS_FREE(ltb, ltb->ltb_size);
888 lnet_free_text_bufs(struct list_head *tbs)
890 struct lnet_text_buf *ltb;
892 while (!list_empty(tbs)) {
893 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
895 list_del(<b->ltb_list);
896 lnet_free_text_buf(ltb);
901 lnet_print_text_bufs(struct list_head *tbs)
903 struct list_head *tmp;
904 struct lnet_text_buf *ltb;
906 list_for_each(tmp, tbs) {
907 ltb = list_entry(tmp, struct lnet_text_buf, ltb_list);
909 CDEBUG(D_WARNING, "%s\n", ltb->ltb_text);
912 CDEBUG(D_WARNING, "%d allocated\n", lnet_tbnob);
916 lnet_str2tbs_sep(struct list_head *tbs, char *str)
918 struct list_head pending;
922 struct lnet_text_buf *ltb;
924 INIT_LIST_HEAD(&pending);
926 /* Split 'str' into separate commands */
928 /* skip leading whitespace */
929 while (isspace(*str))
932 /* scan for separator or comment */
933 for (sep = str; *sep != 0; sep++)
934 if (lnet_issep(*sep) || *sep == '#')
937 nob = (int)(sep - str);
939 ltb = lnet_new_text_buf(nob);
941 lnet_free_text_bufs(&pending);
945 for (i = 0; i < nob; i++)
947 ltb->ltb_text[i] = ' ';
949 ltb->ltb_text[i] = str[i];
951 ltb->ltb_text[nob] = 0;
953 list_add_tail(<b->ltb_list, &pending);
957 /* scan for separator */
960 } while (*sep != 0 && !lnet_issep(*sep));
969 list_splice(&pending, tbs->prev);
974 lnet_expand1tb(struct list_head *list,
975 char *str, char *sep1, char *sep2,
976 char *item, int itemlen)
978 int len1 = (int)(sep1 - str);
979 int len2 = strlen(sep2 + 1);
980 struct lnet_text_buf *ltb;
982 LASSERT (*sep1 == '[');
983 LASSERT (*sep2 == ']');
985 ltb = lnet_new_text_buf(len1 + itemlen + len2);
989 memcpy(ltb->ltb_text, str, len1);
990 memcpy(<b->ltb_text[len1], item, itemlen);
991 memcpy(<b->ltb_text[len1+itemlen], sep2 + 1, len2);
992 ltb->ltb_text[len1 + itemlen + len2] = 0;
994 list_add_tail(<b->ltb_list, list);
999 lnet_str2tbs_expand(struct list_head *tbs, char *str)
1002 struct list_head pending;
1014 INIT_LIST_HEAD(&pending);
1016 sep = strchr(str, '[');
1017 if (sep == NULL) /* nothing to expand */
1020 sep2 = strchr(sep, ']');
1024 for (parsed = sep; parsed < sep2; parsed = enditem) {
1027 while (enditem < sep2 && *enditem != ',')
1030 if (enditem == parsed) /* no empty items */
1033 if (sscanf(parsed, "%d-%d/%d%n", &lo, &hi, &stride, &scanned) < 3) {
1035 if (sscanf(parsed, "%d-%d%n", &lo, &hi, &scanned) < 2) {
1037 /* simple string enumeration */
1038 if (lnet_expand1tb(&pending, str, sep, sep2,
1039 parsed, (int)(enditem - parsed)) != 0)
1048 /* range expansion */
1050 if (enditem != parsed + scanned) /* no trailing junk */
1053 if (hi < 0 || lo < 0 || stride < 0 || hi < lo ||
1054 (hi - lo) % stride != 0)
1057 for (i = lo; i <= hi; i += stride) {
1059 snprintf(num, sizeof(num), "%d", i);
1061 if (nob + 1 == sizeof(num))
1064 if (lnet_expand1tb(&pending, str, sep, sep2,
1070 list_splice(&pending, tbs->prev);
1074 lnet_free_text_bufs(&pending);
1079 lnet_parse_hops (char *str, unsigned int *hops)
1081 int len = strlen(str);
1084 return (sscanf(str, "%u%n", hops, &nob) >= 1 &&
1086 *hops > 0 && *hops < 256);
1089 #define LNET_PRIORITY_SEPARATOR (':')
1092 lnet_parse_priority(char *str, unsigned int *priority, char **token)
1098 sep = strchr(str, LNET_PRIORITY_SEPARATOR);
1103 len = strlen(sep + 1);
1105 if ((sscanf((sep+1), "%u%n", priority, &nob) < 1) || (len != nob)) {
1106 /* Update the caller's token pointer so it treats the found
1107 priority as the token to report in the error message. */
1108 *token += sep - str + 1;
1112 CDEBUG(D_NET, "gateway %s, priority %d, nob %d\n", str, *priority, nob);
1115 * Change priority separator to \0 to be able to parse NID
1122 lnet_parse_route (char *str, int *im_a_router)
1124 /* static scratch buffer OK (single threaded) */
1125 static char cmd[LNET_SINGLE_TEXTBUF_NOB];
1127 struct list_head nets;
1128 struct list_head gateways;
1129 struct list_head *tmp1;
1130 struct list_head *tmp2;
1133 struct lnet_text_buf *ltb;
1141 unsigned int priority = 0;
1143 INIT_LIST_HEAD(&gateways);
1144 INIT_LIST_HEAD(&nets);
1146 /* save a copy of the string for error messages */
1147 strncpy(cmd, str, sizeof(cmd));
1148 cmd[sizeof(cmd) - 1] = '\0';
1152 /* scan for token start */
1153 while (isspace(*sep))
1156 if (ntokens < (got_hops ? 3 : 2))
1164 /* scan for token end */
1165 while (*sep != 0 && !isspace(*sep))
1171 tmp2 = &nets; /* expanding nets */
1172 } else if (ntokens == 2 &&
1173 lnet_parse_hops(token, &hops)) {
1174 got_hops = 1; /* got a hop count */
1177 tmp2 = &gateways; /* expanding gateways */
1180 ltb = lnet_new_text_buf(strlen(token));
1184 strcpy(ltb->ltb_text, token);
1185 tmp1 = <b->ltb_list;
1186 list_add_tail(tmp1, tmp2);
1188 while (tmp1 != tmp2) {
1189 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1191 rc = lnet_str2tbs_expand(tmp1->next, ltb->ltb_text);
1197 if (rc > 0) { /* expanded! */
1198 list_del(<b->ltb_list);
1199 lnet_free_text_buf(ltb);
1204 net = libcfs_str2net(ltb->ltb_text);
1205 if (net == LNET_NIDNET(LNET_NID_ANY) ||
1206 LNET_NETTYP(net) == LOLND)
1209 rc = lnet_parse_priority(ltb->ltb_text,
1214 nid = libcfs_str2nid(ltb->ltb_text);
1215 if (nid == LNET_NID_ANY ||
1216 LNET_NETTYP(LNET_NIDNET(nid)) == LOLND)
1222 /* if there are no hops set then we want to flag this value as
1223 * unset since hops is an optional parameter */
1225 hops = LNET_UNDEFINED_HOPS;
1227 LASSERT(!list_empty(&nets));
1228 LASSERT(!list_empty(&gateways));
1230 list_for_each(tmp1, &nets) {
1231 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1232 net = libcfs_str2net(ltb->ltb_text);
1233 LASSERT (net != LNET_NIDNET(LNET_NID_ANY));
1235 list_for_each(tmp2, &gateways) {
1236 ltb = list_entry(tmp2, struct lnet_text_buf, ltb_list);
1237 nid = libcfs_str2nid(ltb->ltb_text);
1238 LASSERT(nid != LNET_NID_ANY);
1240 if (lnet_islocalnid(nid)) {
1245 rc = lnet_add_route(net, hops, nid, priority);
1246 if (rc != 0 && rc != -EEXIST && rc != -EHOSTUNREACH) {
1247 CERROR("Can't create route "
1249 libcfs_net2str(net),
1250 libcfs_nid2str(nid));
1260 lnet_syntax("routes", cmd, (int)(token - str), strlen(token));
1262 lnet_free_text_bufs(&nets);
1263 lnet_free_text_bufs(&gateways);
1268 lnet_parse_route_tbs(struct list_head *tbs, int *im_a_router)
1270 struct lnet_text_buf *ltb;
1272 while (!list_empty(tbs)) {
1273 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
1275 if (lnet_parse_route(ltb->ltb_text, im_a_router) < 0) {
1276 lnet_free_text_bufs(tbs);
1280 list_del(<b->ltb_list);
1281 lnet_free_text_buf(ltb);
1288 lnet_parse_routes (char *routes, int *im_a_router)
1290 struct list_head tbs;
1295 INIT_LIST_HEAD(&tbs);
1297 if (lnet_str2tbs_sep(&tbs, routes) < 0) {
1298 CERROR("Error parsing routes\n");
1301 rc = lnet_parse_route_tbs(&tbs, im_a_router);
1304 LASSERT (lnet_tbnob == 0);
1309 lnet_match_network_token(char *token, int len, __u32 *ipaddrs, int nip)
1311 struct list_head list = LIST_HEAD_INIT(list);
1315 rc = cfs_ip_addr_parse(token, len, &list);
1319 for (rc = i = 0; !rc && i < nip; i++)
1320 rc = cfs_ip_addr_match(ipaddrs[i], &list);
1322 cfs_expr_list_free_list(&list);
1328 lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip)
1330 static char tokens[LNET_SINGLE_TEXTBUF_NOB];
1340 LASSERT(strlen(net_entry) < sizeof(tokens));
1342 /* work on a copy of the string */
1343 strcpy(tokens, net_entry);
1346 /* scan for token start */
1347 while (isspace(*sep))
1354 /* scan for token end */
1355 while (*sep != 0 && !isspace(*sep))
1360 if (ntokens++ == 0) {
1365 len = strlen(token);
1367 rc = lnet_match_network_token(token, len, ipaddrs, nip);
1369 lnet_syntax("ip2nets", net_entry,
1370 (int)(token - tokens), len);
1374 matched |= (rc != 0);
1380 strcpy(net_entry, net); /* replace with matched net */
1385 lnet_netspec2net(char *netspec)
1387 char *bracket = strchr(netspec, '(');
1390 if (bracket != NULL)
1393 net = libcfs_str2net(netspec);
1395 if (bracket != NULL)
1402 lnet_splitnets(char *source, struct list_head *nets)
1407 struct lnet_text_buf *tb;
1408 struct lnet_text_buf *tb2;
1409 struct list_head *t;
1414 LASSERT(!list_empty(nets));
1415 LASSERT(nets->next == nets->prev); /* single entry */
1417 tb = list_entry(nets->next, struct lnet_text_buf, ltb_list);
1420 sep = strchr(tb->ltb_text, ',');
1421 bracket = strchr(tb->ltb_text, '(');
1426 /* netspec lists interfaces... */
1428 offset2 = offset + (int)(bracket - tb->ltb_text);
1429 len = strlen(bracket);
1431 bracket = strchr(bracket + 1, ')');
1433 if (bracket == NULL ||
1434 !(bracket[1] == ',' || bracket[1] == 0)) {
1435 lnet_syntax("ip2nets", source, offset2, len);
1439 sep = (bracket[1] == 0) ? NULL : bracket + 1;
1445 net = lnet_netspec2net(tb->ltb_text);
1446 if (net == LNET_NIDNET(LNET_NID_ANY)) {
1447 lnet_syntax("ip2nets", source, offset,
1448 strlen(tb->ltb_text));
1452 list_for_each(t, nets) {
1453 tb2 = list_entry(t, struct lnet_text_buf, ltb_list);
1458 if (net == lnet_netspec2net(tb2->ltb_text)) {
1459 /* duplicate network */
1460 lnet_syntax("ip2nets", source, offset,
1461 strlen(tb->ltb_text));
1469 offset += (int)(sep - tb->ltb_text);
1471 tb2 = lnet_new_text_buf(len);
1475 strncpy(tb2->ltb_text, sep, len);
1476 tb2->ltb_text[len] = '\0';
1477 list_add_tail(&tb2->ltb_list, nets);
1484 lnet_match_networks (char **networksp, char *ip2nets, __u32 *ipaddrs, int nip)
1486 static char networks[LNET_SINGLE_TEXTBUF_NOB];
1487 static char source[LNET_SINGLE_TEXTBUF_NOB];
1489 struct list_head raw_entries;
1490 struct list_head matched_nets;
1491 struct list_head current_nets;
1492 struct list_head *t;
1493 struct list_head *t2;
1494 struct lnet_text_buf *tb;
1495 struct lnet_text_buf *tb2;
1503 INIT_LIST_HEAD(&raw_entries);
1504 if (lnet_str2tbs_sep(&raw_entries, ip2nets) < 0) {
1505 CERROR("Error parsing ip2nets\n");
1506 LASSERT(lnet_tbnob == 0);
1510 INIT_LIST_HEAD(&matched_nets);
1511 INIT_LIST_HEAD(¤t_nets);
1517 while (!list_empty(&raw_entries)) {
1518 tb = list_entry(raw_entries.next, struct lnet_text_buf,
1521 strncpy(source, tb->ltb_text, sizeof(source));
1522 source[sizeof(source) - 1] = '\0';
1524 /* replace ltb_text with the network(s) add on match */
1525 rc = lnet_match_network_tokens(tb->ltb_text, ipaddrs, nip);
1529 list_del(&tb->ltb_list);
1531 if (rc == 0) { /* no match */
1532 lnet_free_text_buf(tb);
1536 /* split into separate networks */
1537 INIT_LIST_HEAD(¤t_nets);
1538 list_add(&tb->ltb_list, ¤t_nets);
1539 rc = lnet_splitnets(source, ¤t_nets);
1544 list_for_each(t, ¤t_nets) {
1545 tb = list_entry(t, struct lnet_text_buf, ltb_list);
1546 net1 = lnet_netspec2net(tb->ltb_text);
1547 LASSERT(net1 != LNET_NIDNET(LNET_NID_ANY));
1549 list_for_each(t2, &matched_nets) {
1550 tb2 = list_entry(t2, struct lnet_text_buf,
1552 net2 = lnet_netspec2net(tb2->ltb_text);
1553 LASSERT(net2 != LNET_NIDNET(LNET_NID_ANY));
1566 lnet_free_text_bufs(¤t_nets);
1570 list_for_each_safe(t, t2, ¤t_nets) {
1571 tb = list_entry(t, struct lnet_text_buf, ltb_list);
1573 list_del(&tb->ltb_list);
1574 list_add_tail(&tb->ltb_list, &matched_nets);
1576 len += snprintf(networks + len, sizeof(networks) - len,
1577 "%s%s", (len == 0) ? "" : ",",
1580 if (len >= sizeof(networks)) {
1581 CERROR("Too many matched networks\n");
1591 lnet_free_text_bufs(&raw_entries);
1592 lnet_free_text_bufs(&matched_nets);
1593 lnet_free_text_bufs(¤t_nets);
1594 LASSERT(lnet_tbnob == 0);
1599 *networksp = networks;
1604 lnet_ipaddr_free_enumeration(__u32 *ipaddrs, int nip)
1606 LIBCFS_FREE(ipaddrs, nip * sizeof(*ipaddrs));
1610 lnet_ipaddr_enumerate (__u32 **ipaddrsp)
1618 int nif = lnet_ipif_enumerate(&ifnames);
1625 LIBCFS_ALLOC(ipaddrs, nif * sizeof(*ipaddrs));
1626 if (ipaddrs == NULL) {
1627 CERROR("Can't allocate ipaddrs[%d]\n", nif);
1628 lnet_ipif_free_enumeration(ifnames, nif);
1632 for (i = nip = 0; i < nif; i++) {
1633 if (!strcmp(ifnames[i], "lo"))
1636 rc = lnet_ipif_query(ifnames[i], &up,
1637 &ipaddrs[nip], &netmask);
1639 CWARN("Can't query interface %s: %d\n",
1645 CWARN("Ignoring interface %s: it's down\n",
1653 lnet_ipif_free_enumeration(ifnames, nif);
1656 *ipaddrsp = ipaddrs;
1659 LIBCFS_ALLOC(ipaddrs2, nip * sizeof(*ipaddrs2));
1660 if (ipaddrs2 == NULL) {
1661 CERROR("Can't allocate ipaddrs[%d]\n", nip);
1664 memcpy(ipaddrs2, ipaddrs,
1665 nip * sizeof(*ipaddrs));
1666 *ipaddrsp = ipaddrs2;
1670 lnet_ipaddr_free_enumeration(ipaddrs, nif);
1676 lnet_parse_ip2nets (char **networksp, char *ip2nets)
1678 __u32 *ipaddrs = NULL;
1679 int nip = lnet_ipaddr_enumerate(&ipaddrs);
1683 LCONSOLE_ERROR_MSG(0x117, "Error %d enumerating local IP "
1684 "interfaces for ip2nets to match\n", nip);
1689 LCONSOLE_ERROR_MSG(0x118, "No local IP interfaces "
1690 "for ip2nets to match\n");
1694 rc = lnet_match_networks(networksp, ip2nets, ipaddrs, nip);
1695 lnet_ipaddr_free_enumeration(ipaddrs, nip);
1698 LCONSOLE_ERROR_MSG(0x119, "Error %d parsing ip2nets\n", rc);
1703 LCONSOLE_ERROR_MSG(0x11a, "ip2nets does not match "
1704 "any local IP interfaces\n");