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, &net)) {
360 CDEBUG(D_NET, "Returning duplicate net %p %s\n", net,
361 libcfs_net2str(net->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 INIT_LIST_HEAD(&net->net_rtr_pref_nids);
377 spin_lock_init(&net->net_lock);
379 net->net_id = net_id;
380 net->net_last_alive = ktime_get_real_seconds();
382 net->net_sel_priority = LNET_MAX_SELECTION_PRIORITY;
384 /* initialize global paramters to undefiend */
385 net->net_tunables.lct_peer_timeout = -1;
386 net->net_tunables.lct_max_tx_credits = -1;
387 net->net_tunables.lct_peer_tx_credits = -1;
388 net->net_tunables.lct_peer_rtr_credits = -1;
391 list_add_tail(&net->net_list, net_list);
397 lnet_ni_add_interface(struct lnet_ni *ni, char *iface)
404 if (!lnet_ni_unique_ni(ni->ni_interfaces, iface))
407 /* Allocate a separate piece of memory and copy
408 * into it the string, so we don't have
409 * a depencency on the tokens string. This way we
410 * can free the tokens at the end of the function.
411 * The newly allocated ni_interfaces[] can be
412 * freed when freeing the NI */
413 while (niface < LNET_INTERFACES_NUM &&
414 ni->ni_interfaces[niface] != NULL)
417 if (niface >= LNET_INTERFACES_NUM) {
418 LCONSOLE_ERROR_MSG(0x115, "Too many interfaces "
420 libcfs_net2str(LNET_NIDNET(ni->ni_nid)));
424 LIBCFS_ALLOC(ni->ni_interfaces[niface],
427 if (ni->ni_interfaces[niface] == NULL) {
428 CERROR("Can't allocate net interface name\n");
432 strncpy(ni->ni_interfaces[niface], iface,
438 static struct lnet_ni *
439 lnet_ni_alloc_common(struct lnet_net *net, char *iface)
441 struct lnet_tx_queue *tq;
446 /* make sure that this NI is unique in the net it's
448 if (!lnet_ni_unique_net(&net->net_ni_added, iface))
451 LIBCFS_ALLOC(ni, sizeof(*ni));
453 CERROR("Out of memory creating network interface %s%s\n",
454 libcfs_net2str(net->net_id),
455 (iface != NULL) ? iface : "");
459 spin_lock_init(&ni->ni_lock);
460 INIT_LIST_HEAD(&ni->ni_netlist);
461 INIT_LIST_HEAD(&ni->ni_recovery);
462 LNetInvalidateMDHandle(&ni->ni_ping_mdh);
463 ni->ni_refs = cfs_percpt_alloc(lnet_cpt_table(),
464 sizeof(*ni->ni_refs[0]));
465 if (ni->ni_refs == NULL)
468 ni->ni_tx_queues = cfs_percpt_alloc(lnet_cpt_table(),
469 sizeof(*ni->ni_tx_queues[0]));
470 if (ni->ni_tx_queues == NULL)
473 cfs_percpt_for_each(tq, i, ni->ni_tx_queues)
474 INIT_LIST_HEAD(&tq->tq_delayed);
477 /* LND will fill in the address part of the NID */
478 ni->ni_nid = LNET_MKNID(net->net_id, 0);
480 /* Store net namespace in which current ni is being created */
481 if (current->nsproxy && current->nsproxy->net_ns)
482 ni->ni_net_ns = get_net(current->nsproxy->net_ns);
484 ni->ni_net_ns = get_net(&init_net);
486 ni->ni_state = LNET_NI_STATE_INIT;
487 ni->ni_sel_priority = LNET_MAX_SELECTION_PRIORITY;
488 list_add_tail(&ni->ni_netlist, &net->net_ni_added);
491 * if an interface name is provided then make sure to add in that
492 * interface name in NI
495 if (lnet_ni_add_interface(ni, iface) != 0)
504 /* allocate and add to the provided network */
506 lnet_ni_alloc(struct lnet_net *net, struct cfs_expr_list *el, char *iface)
511 ni = lnet_ni_alloc_common(net, iface);
517 ni->ni_ncpts = LNET_CPT_NUMBER;
519 rc = cfs_expr_list_values(el, LNET_CPT_NUMBER, &ni->ni_cpts);
521 CERROR("Failed to set CPTs for NI %s(%s): %d\n",
522 libcfs_net2str(net->net_id),
523 (iface != NULL) ? iface : "", rc);
527 LASSERT(rc <= LNET_CPT_NUMBER);
528 if (rc == LNET_CPT_NUMBER) {
529 CFS_FREE_PTR_ARRAY(ni->ni_cpts, rc);
536 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
547 lnet_ni_alloc_w_cpt_array(struct lnet_net *net, __u32 *cpts, __u32 ncpts,
553 ni = lnet_ni_alloc_common(net, iface);
559 ni->ni_ncpts = LNET_CPT_NUMBER;
561 size_t array_size = ncpts * sizeof(ni->ni_cpts[0]);
563 CFS_ALLOC_PTR_ARRAY(ni->ni_cpts, ncpts);
564 if (ni->ni_cpts == NULL)
566 memcpy(ni->ni_cpts, cpts, array_size);
567 ni->ni_ncpts = ncpts;
570 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
581 * Parse the networks string and create the matching set of NIs on the
585 lnet_parse_networks(struct list_head *netlist, const char *networks,
586 bool use_tcp_bonding)
588 struct cfs_expr_list *net_el = NULL;
589 struct cfs_expr_list *ni_el = NULL;
593 struct lnet_net *net;
594 struct lnet_ni *ni = NULL;
598 if (networks == NULL) {
599 CERROR("networks string is undefined\n");
603 if (strlen(networks) > LNET_SINGLE_TEXTBUF_NOB) {
604 /* _WAY_ conservative */
605 LCONSOLE_ERROR_MSG(0x112, "Can't parse networks: string too "
610 tokensize = strlen(networks) + 1;
612 LIBCFS_ALLOC(tokens, tokensize);
613 if (tokens == NULL) {
614 CERROR("Can't allocate net tokens\n");
618 memcpy(tokens, networks, tokensize);
624 * NB we don't check interface conflicts here; it's the LNDs
625 * responsibility (if it cares at all)
634 * Parse a network string into its components.
636 * <name>{"("...")"}{"["<el>"]"}
639 /* Network name (mandatory) */
640 while (isspace(*str))
645 str += strcspn(str, SPACESTR ":()[],");
646 while (isspace(*str))
649 /* Interface list (optional) */
653 str += strcspn(str, ")");
660 } while (isspace(*str));
665 /* CPT expression (optional) */
668 str += strcspn(str, "]");
673 rc = cfs_expr_list_parse(elstr, str - elstr + 1,
674 0, LNET_CPT_NUMBER - 1,
683 } while (isspace(*str));
687 if (*str && (strchr(DELIMITERS, *str) != NULL))
690 /* go to the next net if it exits */
691 str += strcspn(str, ",");
696 * At this point the name is properly terminated.
698 net_id = libcfs_str2net(name);
699 if (net_id == LNET_NET_ANY) {
700 LCONSOLE_ERROR_MSG(0x113,
701 "Unrecognised network type\n");
706 if (LNET_NETTYP(net_id) == LOLND) {
707 /* Loopback is implicit, and there can be only one. */
709 cfs_expr_list_free(net_el);
712 /* Should we error out instead? */
717 * All network paramaters are now known.
721 /* always allocate a net, since we will eventually add an
722 * interface to it, or we will fail, in which case we'll
724 net = lnet_net_alloc(net_id, netlist);
725 if (IS_ERR_OR_NULL(net))
729 (use_tcp_bonding && LNET_NETTYP(net_id) == SOCKLND)) {
731 * No interface list was specified, allocate a
732 * ni using the defaults.
734 ni = lnet_ni_alloc(net, net_el, NULL);
735 if (IS_ERR_OR_NULL(ni))
740 cfs_expr_list_free(net_el);
750 /* Interface name (mandatory) */
751 while (isspace(*nistr))
754 nistr += strcspn(nistr, SPACESTR "[],");
755 while (isspace(*nistr))
758 /* CPT expression (optional) */
761 nistr += strcspn(nistr, "]");
766 rc = cfs_expr_list_parse(elstr,
768 0, LNET_CPT_NUMBER - 1,
777 } while (isspace(*nistr));
783 * End of single interface specificaton,
784 * advance to the start of the next one, if
790 } while (isspace(*nistr));
801 * At this point the name is properly terminated.
808 if (use_tcp_bonding &&
809 LNET_NETTYP(net->net_id) == SOCKLND) {
810 rc = lnet_ni_add_interface(ni, name);
814 ni = lnet_ni_alloc(net, ni_el, name);
815 if (IS_ERR_OR_NULL(ni))
820 if (ni_el != net_el) {
821 cfs_expr_list_free(ni_el);
828 cfs_expr_list_free(net_el);
833 LIBCFS_FREE(tokens, tokensize);
837 lnet_syntax("networks", networks, (int)(str - tokens), strlen(str));
839 /* free the net list and all the nis on each net */
840 while (!list_empty(netlist)) {
841 net = list_entry(netlist->next, struct lnet_net, net_list);
843 list_del_init(&net->net_list);
847 if (ni_el && ni_el != net_el)
848 cfs_expr_list_free(ni_el);
850 cfs_expr_list_free(net_el);
852 LIBCFS_FREE(tokens, tokensize);
857 static struct lnet_text_buf *lnet_new_text_buf(int str_len)
859 struct lnet_text_buf *ltb;
862 /* NB allocate space for the terminating 0 */
863 nob = offsetof(struct lnet_text_buf, ltb_text[str_len + 1]);
864 if (nob > LNET_SINGLE_TEXTBUF_NOB) {
865 /* _way_ conservative for "route net gateway..." */
866 CERROR("text buffer too big\n");
870 if (lnet_tbnob + nob > LNET_MAX_TEXTBUF_NOB) {
871 CERROR("Too many text buffers\n");
875 LIBCFS_ALLOC(ltb, nob);
880 ltb->ltb_text[0] = 0;
886 lnet_free_text_buf(struct lnet_text_buf *ltb)
888 lnet_tbnob -= ltb->ltb_size;
889 LIBCFS_FREE(ltb, ltb->ltb_size);
893 lnet_free_text_bufs(struct list_head *tbs)
895 struct lnet_text_buf *ltb;
897 while (!list_empty(tbs)) {
898 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
900 list_del(<b->ltb_list);
901 lnet_free_text_buf(ltb);
906 lnet_str2tbs_sep(struct list_head *tbs, const char *str)
912 struct lnet_text_buf *ltb;
914 /* Split 'str' into separate commands */
916 /* skip leading whitespace */
917 while (isspace(*str))
920 /* scan for separator or comment */
921 for (sep = str; *sep != 0; sep++)
922 if (lnet_issep(*sep) || *sep == '#')
925 nob = (int)(sep - str);
927 ltb = lnet_new_text_buf(nob);
929 lnet_free_text_bufs(&pending);
933 for (i = 0; i < nob; i++)
935 ltb->ltb_text[i] = ' ';
937 ltb->ltb_text[i] = str[i];
939 ltb->ltb_text[nob] = 0;
941 list_add_tail(<b->ltb_list, &pending);
945 /* scan for separator */
948 } while (*sep != 0 && !lnet_issep(*sep));
957 list_splice(&pending, tbs->prev);
962 lnet_expand1tb(struct list_head *list,
963 char *str, char *sep1, char *sep2,
964 char *item, int itemlen)
966 int len1 = (int)(sep1 - str);
967 int len2 = strlen(sep2 + 1);
968 struct lnet_text_buf *ltb;
970 LASSERT (*sep1 == '[');
971 LASSERT (*sep2 == ']');
973 ltb = lnet_new_text_buf(len1 + itemlen + len2);
977 memcpy(ltb->ltb_text, str, len1);
978 memcpy(<b->ltb_text[len1], item, itemlen);
979 memcpy(<b->ltb_text[len1+itemlen], sep2 + 1, len2);
980 ltb->ltb_text[len1 + itemlen + len2] = 0;
982 list_add_tail(<b->ltb_list, list);
987 lnet_str2tbs_expand(struct list_head *tbs, char *str)
1002 sep = strchr(str, '[');
1003 if (sep == NULL) /* nothing to expand */
1006 sep2 = strchr(sep, ']');
1010 for (parsed = sep; parsed < sep2; parsed = enditem) {
1013 while (enditem < sep2 && *enditem != ',')
1016 if (enditem == parsed) /* no empty items */
1019 if (sscanf(parsed, "%d-%d/%d%n", &lo, &hi, &stride, &scanned) < 3) {
1021 if (sscanf(parsed, "%d-%d%n", &lo, &hi, &scanned) < 2) {
1023 /* simple string enumeration */
1024 if (lnet_expand1tb(&pending, str, sep, sep2,
1025 parsed, (int)(enditem - parsed)) != 0)
1034 /* range expansion */
1036 if (enditem != parsed + scanned) /* no trailing junk */
1039 if (hi < 0 || lo < 0 || stride < 0 || hi < lo ||
1040 (hi - lo) % stride != 0)
1043 for (i = lo; i <= hi; i += stride) {
1045 snprintf(num, sizeof(num), "%d", i);
1047 if (nob + 1 == sizeof(num))
1050 if (lnet_expand1tb(&pending, str, sep, sep2,
1056 list_splice(&pending, tbs->prev);
1060 lnet_free_text_bufs(&pending);
1065 lnet_parse_hops (char *str, unsigned int *hops)
1067 int len = strlen(str);
1070 return (sscanf(str, "%u%n", hops, &nob) >= 1 &&
1072 *hops > 0 && *hops < 256);
1075 #define LNET_PRIORITY_SEPARATOR (':')
1078 lnet_parse_priority(char *str, unsigned int *priority, char **token)
1084 sep = strchr(str, LNET_PRIORITY_SEPARATOR);
1089 len = strlen(sep + 1);
1091 if ((sscanf((sep+1), "%u%n", priority, &nob) < 1) || (len != nob)) {
1092 /* Update the caller's token pointer so it treats the found
1093 priority as the token to report in the error message. */
1094 *token += sep - str + 1;
1098 CDEBUG(D_NET, "gateway %s, priority %d, nob %d\n", str, *priority, nob);
1101 * Change priority separator to \0 to be able to parse NID
1108 lnet_parse_route(char *str, int *im_a_router)
1110 /* static scratch buffer OK (single threaded) */
1111 static char cmd[LNET_SINGLE_TEXTBUF_NOB];
1114 LIST_HEAD(gateways);
1115 struct list_head *tmp1;
1116 struct list_head *tmp2;
1119 struct lnet_text_buf *ltb;
1127 unsigned int priority = 0;
1129 /* save a copy of the string for error messages */
1130 strncpy(cmd, str, sizeof(cmd));
1131 cmd[sizeof(cmd) - 1] = '\0';
1135 /* scan for token start */
1136 while (isspace(*sep))
1139 if (ntokens < (got_hops ? 3 : 2))
1147 /* scan for token end */
1148 while (*sep != 0 && !isspace(*sep))
1154 tmp2 = &nets; /* expanding nets */
1155 } else if (ntokens == 2 &&
1156 lnet_parse_hops(token, &hops)) {
1157 got_hops = 1; /* got a hop count */
1160 tmp2 = &gateways; /* expanding gateways */
1163 ltb = lnet_new_text_buf(strlen(token));
1167 strcpy(ltb->ltb_text, token);
1168 tmp1 = <b->ltb_list;
1169 list_add_tail(tmp1, tmp2);
1171 while (tmp1 != tmp2) {
1172 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1174 rc = lnet_str2tbs_expand(tmp1->next, ltb->ltb_text);
1180 if (rc > 0) { /* expanded! */
1181 list_del(<b->ltb_list);
1182 lnet_free_text_buf(ltb);
1187 net = libcfs_str2net(ltb->ltb_text);
1188 if (net == LNET_NET_ANY ||
1189 LNET_NETTYP(net) == LOLND)
1192 rc = lnet_parse_priority(ltb->ltb_text,
1197 nid = libcfs_str2nid(ltb->ltb_text);
1198 if (nid == LNET_NID_ANY || nid == LNET_NID_LO_0)
1204 /* if there are no hops set then we want to flag this value as
1205 * unset since hops is an optional parameter */
1207 hops = LNET_UNDEFINED_HOPS;
1209 LASSERT(!list_empty(&nets));
1210 LASSERT(!list_empty(&gateways));
1212 list_for_each(tmp1, &nets) {
1213 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1214 net = libcfs_str2net(ltb->ltb_text);
1215 LASSERT(net != LNET_NET_ANY);
1217 list_for_each(tmp2, &gateways) {
1218 ltb = list_entry(tmp2, struct lnet_text_buf, ltb_list);
1219 nid = libcfs_str2nid(ltb->ltb_text);
1220 LASSERT(nid != LNET_NID_ANY);
1222 if (lnet_islocalnid(nid)) {
1227 rc = lnet_add_route(net, hops, nid, priority, 1);
1228 if (rc != 0 && rc != -EEXIST && rc != -EHOSTUNREACH) {
1229 CERROR("Can't create route "
1231 libcfs_net2str(net),
1232 libcfs_nid2str(nid));
1242 lnet_syntax("routes", cmd, (int)(token - str), strlen(token));
1244 lnet_free_text_bufs(&nets);
1245 lnet_free_text_bufs(&gateways);
1250 lnet_parse_route_tbs(struct list_head *tbs, int *im_a_router)
1252 struct lnet_text_buf *ltb;
1254 while (!list_empty(tbs)) {
1255 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
1257 if (lnet_parse_route(ltb->ltb_text, im_a_router) < 0) {
1258 lnet_free_text_bufs(tbs);
1262 list_del(<b->ltb_list);
1263 lnet_free_text_buf(ltb);
1270 lnet_parse_routes(const char *routes, int *im_a_router)
1277 if (lnet_str2tbs_sep(&tbs, routes) < 0) {
1278 CERROR("Error parsing routes\n");
1281 rc = lnet_parse_route_tbs(&tbs, im_a_router);
1284 LASSERT (lnet_tbnob == 0);
1289 lnet_match_network_token(char *token, int len, __u32 *ipaddrs, int nip)
1295 rc = cfs_ip_addr_parse(token, len, &list);
1299 for (rc = i = 0; !rc && i < nip; i++)
1300 rc = cfs_ip_addr_match(ipaddrs[i], &list);
1302 cfs_expr_list_free_list(&list);
1308 lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip)
1310 static char tokens[LNET_SINGLE_TEXTBUF_NOB];
1320 LASSERT(strlen(net_entry) < sizeof(tokens));
1322 /* work on a copy of the string */
1323 strcpy(tokens, net_entry);
1326 /* scan for token start */
1327 while (isspace(*sep))
1334 /* scan for token end */
1335 while (*sep != 0 && !isspace(*sep))
1340 if (ntokens++ == 0) {
1345 len = strlen(token);
1347 rc = lnet_match_network_token(token, len, ipaddrs, nip);
1349 lnet_syntax("ip2nets", net_entry,
1350 (int)(token - tokens), len);
1354 matched |= (rc != 0);
1360 strcpy(net_entry, net); /* replace with matched net */
1365 lnet_netspec2net(char *netspec)
1367 char *bracket = strchr(netspec, '(');
1370 if (bracket != NULL)
1373 net = libcfs_str2net(netspec);
1375 if (bracket != NULL)
1382 lnet_splitnets(char *source, struct list_head *nets)
1387 struct lnet_text_buf *tb;
1388 struct lnet_text_buf *tb2;
1389 struct list_head *t;
1394 LASSERT(!list_empty(nets));
1395 LASSERT(nets->next == nets->prev); /* single entry */
1397 tb = list_entry(nets->next, struct lnet_text_buf, ltb_list);
1400 sep = strchr(tb->ltb_text, ',');
1401 bracket = strchr(tb->ltb_text, '(');
1406 /* netspec lists interfaces... */
1408 offset2 = offset + (int)(bracket - tb->ltb_text);
1409 len = strlen(bracket);
1411 bracket = strchr(bracket + 1, ')');
1413 if (bracket == NULL ||
1414 !(bracket[1] == ',' || bracket[1] == 0)) {
1415 lnet_syntax("ip2nets", source, offset2, len);
1419 sep = (bracket[1] == 0) ? NULL : bracket + 1;
1425 net = lnet_netspec2net(tb->ltb_text);
1426 if (net == LNET_NET_ANY) {
1427 lnet_syntax("ip2nets", source, offset,
1428 strlen(tb->ltb_text));
1432 list_for_each(t, nets) {
1433 tb2 = list_entry(t, struct lnet_text_buf, ltb_list);
1438 if (net == lnet_netspec2net(tb2->ltb_text)) {
1439 /* duplicate network */
1440 lnet_syntax("ip2nets", source, offset,
1441 strlen(tb->ltb_text));
1449 offset += (int)(sep - tb->ltb_text);
1451 tb2 = lnet_new_text_buf(len);
1455 strncpy(tb2->ltb_text, sep, len);
1456 tb2->ltb_text[len] = '\0';
1457 list_add_tail(&tb2->ltb_list, nets);
1464 lnet_match_networks(const char **networksp, const char *ip2nets,
1465 __u32 *ipaddrs, int nip)
1467 static char networks[LNET_SINGLE_TEXTBUF_NOB];
1468 static char source[LNET_SINGLE_TEXTBUF_NOB];
1470 LIST_HEAD(raw_entries);
1471 LIST_HEAD(matched_nets);
1472 LIST_HEAD(current_nets);
1473 struct list_head *t;
1474 struct list_head *t2;
1475 struct lnet_text_buf *tb;
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);
1517 list_for_each_safe(t, t2, ¤t_nets) {
1518 tb = list_entry(t, struct lnet_text_buf, ltb_list);
1520 list_move_tail(&tb->ltb_list, &matched_nets);
1522 len += scnprintf(networks + len, sizeof(networks) - len,
1523 "%s%s", (len == 0) ? "" : ",",
1526 if (len >= sizeof(networks)) {
1527 CERROR("Too many matched networks\n");
1537 lnet_free_text_bufs(&raw_entries);
1538 lnet_free_text_bufs(&matched_nets);
1539 lnet_free_text_bufs(¤t_nets);
1540 LASSERT(lnet_tbnob == 0);
1545 *networksp = networks;
1549 int lnet_inet_enumerate(struct lnet_inetdev **dev_list, struct net *ns)
1551 struct lnet_inetdev *ifaces = NULL;
1552 struct net_device *dev;
1555 DECLARE_CONST_IN_IFADDR(ifa);
1558 for_each_netdev(ns, dev) {
1559 int flags = dev_get_flags(dev);
1560 struct in_device *in_dev;
1564 if (flags & IFF_LOOPBACK) /* skip the loopback IF */
1567 if (!(flags & IFF_UP)) {
1568 CWARN("lnet: Ignoring interface %s: it's down\n",
1573 in_dev = __in_dev_get_rtnl(dev);
1575 CWARN("lnet: Interface %s has no IPv4 status.\n",
1580 node_id = dev_to_node(&dev->dev);
1581 cpt = cfs_cpt_of_node(lnet_cpt_table(), node_id);
1583 in_dev_for_each_ifa_rtnl(ifa, in_dev) {
1584 if (nip >= nalloc) {
1585 struct lnet_inetdev *tmp;
1587 nalloc += LNET_INTERFACES_NUM;
1588 tmp = krealloc(ifaces, nalloc * sizeof(*tmp),
1599 ifaces[nip].li_cpt = cpt;
1600 ifaces[nip].li_flags = flags;
1601 ifaces[nip].li_ipaddr = ntohl(ifa->ifa_local);
1602 ifaces[nip].li_netmask = ntohl(ifa->ifa_mask);
1603 strlcpy(ifaces[nip].li_name, ifa->ifa_label,
1604 sizeof(ifaces[nip].li_name));
1613 CERROR("lnet: Can't find any usable interfaces, rc = -ENOENT\n");
1620 EXPORT_SYMBOL(lnet_inet_enumerate);
1623 lnet_parse_ip2nets(const char **networksp, const char *ip2nets)
1625 struct lnet_inetdev *ifaces = NULL;
1626 __u32 *ipaddrs = NULL;
1631 if (current->nsproxy && current->nsproxy->net_ns)
1632 nip = lnet_inet_enumerate(&ifaces, current->nsproxy->net_ns);
1634 nip = lnet_inet_enumerate(&ifaces, &init_net);
1636 if (nip != -ENOENT) {
1637 LCONSOLE_ERROR_MSG(0x117,
1638 "Error %d enumerating local IP interfaces for ip2nets to match\n",
1641 LCONSOLE_ERROR_MSG(0x118,
1642 "No local IP interfaces for ip2nets to match\n");
1647 CFS_ALLOC_PTR_ARRAY(ipaddrs, nip);
1650 CERROR("lnet: Can't allocate ipaddrs[%d], rc = %d\n",
1652 goto out_free_addrs;
1655 for (i = 0; i < nip; i++)
1656 ipaddrs[i] = ifaces[i].li_ipaddr;
1658 rc = lnet_match_networks(networksp, ip2nets, ipaddrs, nip);
1660 LCONSOLE_ERROR_MSG(0x119, "Error %d parsing ip2nets\n", rc);
1661 } else if (rc == 0) {
1662 LCONSOLE_ERROR_MSG(0x11a, "ip2nets does not match "
1663 "any local IP interfaces\n");
1666 CFS_FREE_PTR_ARRAY(ipaddrs, nip);
1669 return rc > 0 ? 0 : rc;