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_interface != NULL &&
117 strncmp(ni->ni_interface, iface, strlen(iface)) == 0)
124 in_array(__u32 *array, __u32 size, __u32 value)
128 for (i = 0; i < size; i++) {
129 if (array[i] == value)
137 lnet_net_append_cpts(__u32 *cpts, __u32 ncpts, struct lnet_net *net)
139 __u32 *added_cpts = NULL;
140 int i, j = 0, rc = 0;
143 * no need to go futher since a subset of the NIs already exist on
146 if (net->net_ncpts == LNET_CPT_NUMBER)
150 /* there is an NI which will exist on all CPTs */
151 if (net->net_cpts != NULL)
152 CFS_FREE_PTR_ARRAY(net->net_cpts, net->net_ncpts);
153 net->net_cpts = NULL;
154 net->net_ncpts = LNET_CPT_NUMBER;
158 if (net->net_cpts == NULL) {
159 CFS_ALLOC_PTR_ARRAY(net->net_cpts, ncpts);
160 if (net->net_cpts == NULL)
162 memcpy(net->net_cpts, cpts, ncpts * sizeof(*net->net_cpts));
163 net->net_ncpts = ncpts;
167 CFS_ALLOC_PTR_ARRAY(added_cpts, LNET_CPT_NUMBER);
168 if (added_cpts == NULL)
171 for (i = 0; i < ncpts; i++) {
172 if (!in_array(net->net_cpts, net->net_ncpts, cpts[i])) {
173 added_cpts[j] = cpts[i];
178 /* append the new cpts if any to the list of cpts in the net */
180 __u32 *array = NULL, *loc;
181 __u32 total_entries = j + net->net_ncpts;
183 CFS_ALLOC_PTR_ARRAY(array, total_entries);
189 memcpy(array, net->net_cpts,
190 net->net_ncpts * sizeof(*net->net_cpts));
191 loc = array + net->net_ncpts;
192 memcpy(loc, added_cpts, j * sizeof(*net->net_cpts));
194 CFS_FREE_PTR_ARRAY(net->net_cpts, net->net_ncpts);
195 net->net_ncpts = total_entries;
196 net->net_cpts = array;
200 CFS_FREE_PTR_ARRAY(added_cpts, LNET_CPT_NUMBER);
206 lnet_net_remove_cpts(__u32 *cpts, __u32 ncpts, struct lnet_net *net)
212 * Operation Assumption:
213 * This function is called after an NI has been removed from
216 * if we're removing an NI which exists on all CPTs then
217 * we have to check if any of the other NIs on this net also
218 * exists on all CPTs. If none, then we need to build our Net CPT
219 * list based on the remaining NIs.
221 * If the NI being removed exist on a subset of the CPTs then we
222 * alo rebuild the Net CPT list based on the remaining NIs, which
223 * should resutl in the expected Net CPT list.
227 * sometimes this function can be called due to some failure
228 * creating an NI, before any of the cpts are allocated, so check
229 * for that case and don't do anything
234 if (ncpts == LNET_CPT_NUMBER) {
236 * first iteration through the NI list in the net to see
237 * if any of the NIs exist on all the CPTs. If one is
238 * found then our job is done.
240 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
241 if (ni->ni_ncpts == LNET_CPT_NUMBER)
247 * Rebuild the Net CPT list again, thereby only including only the
248 * CPTs which the remaining NIs are associated with.
250 if (net->net_cpts != NULL) {
251 CFS_FREE_PTR_ARRAY(net->net_cpts, net->net_ncpts);
252 net->net_cpts = NULL;
255 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
256 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts,
259 CERROR("Out of Memory\n");
261 * do our best to keep on going. Delete
262 * the net cpts and set it to NULL. This
263 * way we can keep on going but less
264 * efficiently, since memory accesses might be
267 if (net->net_cpts != NULL) {
268 CFS_FREE_PTR_ARRAY(net->net_cpts,
270 net->net_cpts = NULL;
271 net->net_ncpts = LNET_CPT_NUMBER;
279 lnet_ni_free(struct lnet_ni *ni)
281 lnet_net_remove_cpts(ni->ni_cpts, ni->ni_ncpts, ni->ni_net);
283 if (ni->ni_refs != NULL)
284 cfs_percpt_free(ni->ni_refs);
286 if (ni->ni_tx_queues != NULL)
287 cfs_percpt_free(ni->ni_tx_queues);
289 if (ni->ni_cpts != NULL)
290 cfs_expr_list_values_free(ni->ni_cpts, ni->ni_ncpts);
292 if (ni->ni_interface != NULL) {
293 LIBCFS_FREE(ni->ni_interface,
294 strlen(ni->ni_interface) + 1);
297 /* release reference to net namespace */
298 if (ni->ni_net_ns != NULL)
299 put_net(ni->ni_net_ns);
301 LIBCFS_FREE(ni, sizeof(*ni));
305 lnet_net_free(struct lnet_net *net)
307 struct list_head *tmp, *tmp2;
310 LASSERT(list_empty(&net->net_ni_zombie));
313 * delete any nis that haven't been added yet. This could happen
314 * if there is a failure on net startup
316 list_for_each_safe(tmp, tmp2, &net->net_ni_added) {
317 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
318 list_del_init(&ni->ni_netlist);
322 /* delete any nis which have been started. */
323 list_for_each_safe(tmp, tmp2, &net->net_ni_list) {
324 ni = list_entry(tmp, struct lnet_ni, ni_netlist);
325 list_del_init(&ni->ni_netlist);
329 if (net->net_cpts != NULL)
330 CFS_FREE_PTR_ARRAY(net->net_cpts, net->net_ncpts);
332 LIBCFS_FREE(net, sizeof(*net));
336 lnet_net_alloc(__u32 net_id, struct list_head *net_list)
338 struct lnet_net *net;
340 if (!lnet_net_unique(net_id, net_list, &net)) {
341 CDEBUG(D_NET, "Returning duplicate net %p %s\n", net,
342 libcfs_net2str(net->net_id));
346 LIBCFS_ALLOC(net, sizeof(*net));
348 CERROR("Out of memory creating network %s\n",
349 libcfs_net2str(net_id));
353 INIT_LIST_HEAD(&net->net_list);
354 INIT_LIST_HEAD(&net->net_ni_list);
355 INIT_LIST_HEAD(&net->net_ni_added);
356 INIT_LIST_HEAD(&net->net_ni_zombie);
357 INIT_LIST_HEAD(&net->net_rtr_pref_nids);
358 spin_lock_init(&net->net_lock);
360 net->net_id = net_id;
361 net->net_last_alive = ktime_get_real_seconds();
363 net->net_sel_priority = LNET_MAX_SELECTION_PRIORITY;
365 /* initialize global paramters to undefiend */
366 net->net_tunables.lct_peer_timeout = -1;
367 net->net_tunables.lct_max_tx_credits = -1;
368 net->net_tunables.lct_peer_tx_credits = -1;
369 net->net_tunables.lct_peer_rtr_credits = -1;
372 list_add_tail(&net->net_list, net_list);
378 lnet_ni_add_interface(struct lnet_ni *ni, char *iface)
385 /* Allocate a separate piece of memory and copy
386 * into it the string, so we don't have
387 * a depencency on the tokens string. This way we
388 * can free the tokens at the end of the function.
389 * The newly allocated ni_interface can be
390 * freed when freeing the NI */
391 if (ni->ni_interface != NULL)
395 LCONSOLE_ERROR_MSG(0x115, "Too many interfaces "
397 libcfs_net2str(LNET_NIDNET(ni->ni_nid)));
401 LIBCFS_ALLOC(ni->ni_interface,
404 if (ni->ni_interface == NULL) {
405 CERROR("Can't allocate net interface name\n");
409 strncpy(ni->ni_interface, iface,
415 static struct lnet_ni *
416 lnet_ni_alloc_common(struct lnet_net *net, char *iface)
418 struct lnet_tx_queue *tq;
423 /* make sure that this NI is unique in the net it's
425 if (!lnet_ni_unique_net(&net->net_ni_added, iface))
428 LIBCFS_ALLOC(ni, sizeof(*ni));
430 CERROR("Out of memory creating network interface %s%s\n",
431 libcfs_net2str(net->net_id),
432 (iface != NULL) ? iface : "");
436 spin_lock_init(&ni->ni_lock);
437 INIT_LIST_HEAD(&ni->ni_netlist);
438 INIT_LIST_HEAD(&ni->ni_recovery);
439 LNetInvalidateMDHandle(&ni->ni_ping_mdh);
440 ni->ni_refs = cfs_percpt_alloc(lnet_cpt_table(),
441 sizeof(*ni->ni_refs[0]));
442 if (ni->ni_refs == NULL)
445 ni->ni_tx_queues = cfs_percpt_alloc(lnet_cpt_table(),
446 sizeof(*ni->ni_tx_queues[0]));
447 if (ni->ni_tx_queues == NULL)
450 cfs_percpt_for_each(tq, i, ni->ni_tx_queues)
451 INIT_LIST_HEAD(&tq->tq_delayed);
454 /* LND will fill in the address part of the NID */
455 ni->ni_nid = LNET_MKNID(net->net_id, 0);
457 /* Store net namespace in which current ni is being created */
458 if (current->nsproxy && current->nsproxy->net_ns)
459 ni->ni_net_ns = get_net(current->nsproxy->net_ns);
461 ni->ni_net_ns = get_net(&init_net);
463 ni->ni_state = LNET_NI_STATE_INIT;
464 ni->ni_sel_priority = LNET_MAX_SELECTION_PRIORITY;
465 list_add_tail(&ni->ni_netlist, &net->net_ni_added);
468 * if an interface name is provided then make sure to add in that
469 * interface name in NI
472 if (lnet_ni_add_interface(ni, iface) != 0)
481 /* allocate and add to the provided network */
483 lnet_ni_alloc(struct lnet_net *net, struct cfs_expr_list *el, char *iface)
488 ni = lnet_ni_alloc_common(net, iface);
494 ni->ni_ncpts = LNET_CPT_NUMBER;
496 rc = cfs_expr_list_values(el, LNET_CPT_NUMBER, &ni->ni_cpts);
498 CERROR("Failed to set CPTs for NI %s(%s): %d\n",
499 libcfs_net2str(net->net_id),
500 (iface != NULL) ? iface : "", rc);
504 LASSERT(rc <= LNET_CPT_NUMBER);
505 if (rc == LNET_CPT_NUMBER) {
506 CFS_FREE_PTR_ARRAY(ni->ni_cpts, rc);
513 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
524 lnet_ni_alloc_w_cpt_array(struct lnet_net *net, __u32 *cpts, __u32 ncpts,
530 ni = lnet_ni_alloc_common(net, iface);
536 ni->ni_ncpts = LNET_CPT_NUMBER;
538 size_t array_size = ncpts * sizeof(ni->ni_cpts[0]);
540 CFS_ALLOC_PTR_ARRAY(ni->ni_cpts, ncpts);
541 if (ni->ni_cpts == NULL)
543 memcpy(ni->ni_cpts, cpts, array_size);
544 ni->ni_ncpts = ncpts;
547 rc = lnet_net_append_cpts(ni->ni_cpts, ni->ni_ncpts, net);
558 * Parse the networks string and create the matching set of NIs on the
562 lnet_parse_networks(struct list_head *netlist, const char *networks)
564 struct cfs_expr_list *net_el = NULL;
565 struct cfs_expr_list *ni_el = NULL;
569 struct lnet_net *net;
570 struct lnet_ni *ni = NULL;
574 if (networks == NULL) {
575 CERROR("networks string is undefined\n");
579 if (strlen(networks) > LNET_SINGLE_TEXTBUF_NOB) {
580 /* _WAY_ conservative */
581 LCONSOLE_ERROR_MSG(0x112, "Can't parse networks: string too "
586 tokensize = strlen(networks) + 1;
588 LIBCFS_ALLOC(tokens, tokensize);
589 if (tokens == NULL) {
590 CERROR("Can't allocate net tokens\n");
594 memcpy(tokens, networks, tokensize);
600 * NB we don't check interface conflicts here; it's the LNDs
601 * responsibility (if it cares at all)
610 * Parse a network string into its components.
612 * <name>{"("...")"}{"["<el>"]"}
615 /* Network name (mandatory) */
616 while (isspace(*str))
621 str += strcspn(str, SPACESTR ":()[],");
622 while (isspace(*str))
625 /* Interface list (optional) */
629 str += strcspn(str, ")");
636 } while (isspace(*str));
641 /* CPT expression (optional) */
644 str += strcspn(str, "]");
649 rc = cfs_expr_list_parse(elstr, str - elstr + 1,
650 0, LNET_CPT_NUMBER - 1,
659 } while (isspace(*str));
663 if (*str && (strchr(DELIMITERS, *str) != NULL))
666 /* go to the next net if it exits */
667 str += strcspn(str, ",");
672 * At this point the name is properly terminated.
674 net_id = libcfs_str2net(name);
675 if (net_id == LNET_NET_ANY) {
676 LCONSOLE_ERROR_MSG(0x113,
677 "Unrecognised network type\n");
682 if (LNET_NETTYP(net_id) == LOLND) {
683 /* Loopback is implicit, and there can be only one. */
685 cfs_expr_list_free(net_el);
688 /* Should we error out instead? */
693 * All network paramaters are now known.
697 /* always allocate a net, since we will eventually add an
698 * interface to it, or we will fail, in which case we'll
700 net = lnet_net_alloc(net_id, netlist);
701 if (IS_ERR_OR_NULL(net))
706 * No interface list was specified, allocate a
707 * ni using the defaults.
709 ni = lnet_ni_alloc(net, net_el, NULL);
710 if (IS_ERR_OR_NULL(ni))
715 cfs_expr_list_free(net_el);
725 /* Interface name (mandatory) */
726 while (isspace(*nistr))
729 nistr += strcspn(nistr, SPACESTR "[],");
730 while (isspace(*nistr))
733 /* CPT expression (optional) */
736 nistr += strcspn(nistr, "]");
741 rc = cfs_expr_list_parse(elstr,
743 0, LNET_CPT_NUMBER - 1,
752 } while (isspace(*nistr));
758 * End of single interface specificaton,
759 * advance to the start of the next one, if
765 } while (isspace(*nistr));
776 * At this point the name is properly terminated.
783 ni = lnet_ni_alloc(net, ni_el, name);
784 if (IS_ERR_OR_NULL(ni))
788 if (ni_el != net_el) {
789 cfs_expr_list_free(ni_el);
796 cfs_expr_list_free(net_el);
801 LIBCFS_FREE(tokens, tokensize);
805 lnet_syntax("networks", networks, (int)(str - tokens), strlen(str));
807 /* free the net list and all the nis on each net */
808 while (!list_empty(netlist)) {
809 net = list_entry(netlist->next, struct lnet_net, net_list);
811 list_del_init(&net->net_list);
815 if (ni_el && ni_el != net_el)
816 cfs_expr_list_free(ni_el);
818 cfs_expr_list_free(net_el);
820 LIBCFS_FREE(tokens, tokensize);
825 static struct lnet_text_buf *lnet_new_text_buf(int str_len)
827 struct lnet_text_buf *ltb;
830 /* NB allocate space for the terminating 0 */
831 nob = offsetof(struct lnet_text_buf, ltb_text[str_len + 1]);
832 if (nob > LNET_SINGLE_TEXTBUF_NOB) {
833 /* _way_ conservative for "route net gateway..." */
834 CERROR("text buffer too big\n");
838 if (lnet_tbnob + nob > LNET_MAX_TEXTBUF_NOB) {
839 CERROR("Too many text buffers\n");
843 LIBCFS_ALLOC(ltb, nob);
848 ltb->ltb_text[0] = 0;
854 lnet_free_text_buf(struct lnet_text_buf *ltb)
856 lnet_tbnob -= ltb->ltb_size;
857 LIBCFS_FREE(ltb, ltb->ltb_size);
861 lnet_free_text_bufs(struct list_head *tbs)
863 struct lnet_text_buf *ltb;
865 while (!list_empty(tbs)) {
866 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
868 list_del(<b->ltb_list);
869 lnet_free_text_buf(ltb);
874 lnet_str2tbs_sep(struct list_head *tbs, const char *str)
880 struct lnet_text_buf *ltb;
882 /* Split 'str' into separate commands */
884 /* skip leading whitespace */
885 while (isspace(*str))
888 /* scan for separator or comment */
889 for (sep = str; *sep != 0; sep++)
890 if (lnet_issep(*sep) || *sep == '#')
893 nob = (int)(sep - str);
895 ltb = lnet_new_text_buf(nob);
897 lnet_free_text_bufs(&pending);
901 for (i = 0; i < nob; i++)
903 ltb->ltb_text[i] = ' ';
905 ltb->ltb_text[i] = str[i];
907 ltb->ltb_text[nob] = 0;
909 list_add_tail(<b->ltb_list, &pending);
913 /* scan for separator */
916 } while (*sep != 0 && !lnet_issep(*sep));
925 list_splice(&pending, tbs->prev);
930 lnet_expand1tb(struct list_head *list,
931 char *str, char *sep1, char *sep2,
932 char *item, int itemlen)
934 int len1 = (int)(sep1 - str);
935 int len2 = strlen(sep2 + 1);
936 struct lnet_text_buf *ltb;
938 LASSERT (*sep1 == '[');
939 LASSERT (*sep2 == ']');
941 ltb = lnet_new_text_buf(len1 + itemlen + len2);
945 memcpy(ltb->ltb_text, str, len1);
946 memcpy(<b->ltb_text[len1], item, itemlen);
947 memcpy(<b->ltb_text[len1+itemlen], sep2 + 1, len2);
948 ltb->ltb_text[len1 + itemlen + len2] = 0;
950 list_add_tail(<b->ltb_list, list);
955 lnet_str2tbs_expand(struct list_head *tbs, char *str)
970 sep = strchr(str, '[');
971 if (sep == NULL) /* nothing to expand */
974 sep2 = strchr(sep, ']');
978 for (parsed = sep; parsed < sep2; parsed = enditem) {
981 while (enditem < sep2 && *enditem != ',')
984 if (enditem == parsed) /* no empty items */
987 if (sscanf(parsed, "%d-%d/%d%n", &lo, &hi, &stride, &scanned) < 3) {
989 if (sscanf(parsed, "%d-%d%n", &lo, &hi, &scanned) < 2) {
991 /* simple string enumeration */
992 if (lnet_expand1tb(&pending, str, sep, sep2,
993 parsed, (int)(enditem - parsed)) != 0)
1002 /* range expansion */
1004 if (enditem != parsed + scanned) /* no trailing junk */
1007 if (hi < 0 || lo < 0 || stride < 0 || hi < lo ||
1008 (hi - lo) % stride != 0)
1011 for (i = lo; i <= hi; i += stride) {
1013 snprintf(num, sizeof(num), "%d", i);
1015 if (nob + 1 == sizeof(num))
1018 if (lnet_expand1tb(&pending, str, sep, sep2,
1024 list_splice(&pending, tbs->prev);
1028 lnet_free_text_bufs(&pending);
1033 lnet_parse_hops (char *str, unsigned int *hops)
1035 int len = strlen(str);
1038 return (sscanf(str, "%u%n", hops, &nob) >= 1 &&
1040 *hops > 0 && *hops < 256);
1043 #define LNET_PRIORITY_SEPARATOR (':')
1046 lnet_parse_priority(char *str, unsigned int *priority, char **token)
1052 sep = strchr(str, LNET_PRIORITY_SEPARATOR);
1057 len = strlen(sep + 1);
1059 if ((sscanf((sep+1), "%u%n", priority, &nob) < 1) || (len != nob)) {
1060 /* Update the caller's token pointer so it treats the found
1061 priority as the token to report in the error message. */
1062 *token += sep - str + 1;
1066 CDEBUG(D_NET, "gateway %s, priority %d, nob %d\n", str, *priority, nob);
1069 * Change priority separator to \0 to be able to parse NID
1076 lnet_parse_route(char *str, int *im_a_router)
1078 /* static scratch buffer OK (single threaded) */
1079 static char cmd[LNET_SINGLE_TEXTBUF_NOB];
1082 LIST_HEAD(gateways);
1083 struct list_head *tmp1;
1084 struct list_head *tmp2;
1087 struct lnet_text_buf *ltb;
1095 unsigned int priority = 0;
1097 /* save a copy of the string for error messages */
1098 strncpy(cmd, str, sizeof(cmd));
1099 cmd[sizeof(cmd) - 1] = '\0';
1103 /* scan for token start */
1104 while (isspace(*sep))
1107 if (ntokens < (got_hops ? 3 : 2))
1115 /* scan for token end */
1116 while (*sep != 0 && !isspace(*sep))
1122 tmp2 = &nets; /* expanding nets */
1123 } else if (ntokens == 2 &&
1124 lnet_parse_hops(token, &hops)) {
1125 got_hops = 1; /* got a hop count */
1128 tmp2 = &gateways; /* expanding gateways */
1131 ltb = lnet_new_text_buf(strlen(token));
1135 strcpy(ltb->ltb_text, token);
1136 tmp1 = <b->ltb_list;
1137 list_add_tail(tmp1, tmp2);
1139 while (tmp1 != tmp2) {
1140 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1142 rc = lnet_str2tbs_expand(tmp1->next, ltb->ltb_text);
1148 if (rc > 0) { /* expanded! */
1149 list_del(<b->ltb_list);
1150 lnet_free_text_buf(ltb);
1155 net = libcfs_str2net(ltb->ltb_text);
1156 if (net == LNET_NET_ANY ||
1157 LNET_NETTYP(net) == LOLND)
1160 rc = lnet_parse_priority(ltb->ltb_text,
1165 nid = libcfs_str2nid(ltb->ltb_text);
1166 if (nid == LNET_NID_ANY || nid == LNET_NID_LO_0)
1172 /* if there are no hops set then we want to flag this value as
1173 * unset since hops is an optional parameter */
1175 hops = LNET_UNDEFINED_HOPS;
1177 LASSERT(!list_empty(&nets));
1178 LASSERT(!list_empty(&gateways));
1180 list_for_each(tmp1, &nets) {
1181 ltb = list_entry(tmp1, struct lnet_text_buf, ltb_list);
1182 net = libcfs_str2net(ltb->ltb_text);
1183 LASSERT(net != LNET_NET_ANY);
1185 list_for_each(tmp2, &gateways) {
1186 ltb = list_entry(tmp2, struct lnet_text_buf, ltb_list);
1187 nid = libcfs_str2nid(ltb->ltb_text);
1188 LASSERT(nid != LNET_NID_ANY);
1190 if (lnet_islocalnid(nid)) {
1195 rc = lnet_add_route(net, hops, nid, priority, 1);
1196 if (rc != 0 && rc != -EEXIST && rc != -EHOSTUNREACH) {
1197 CERROR("Can't create route "
1199 libcfs_net2str(net),
1200 libcfs_nid2str(nid));
1210 lnet_syntax("routes", cmd, (int)(token - str), strlen(token));
1212 lnet_free_text_bufs(&nets);
1213 lnet_free_text_bufs(&gateways);
1218 lnet_parse_route_tbs(struct list_head *tbs, int *im_a_router)
1220 struct lnet_text_buf *ltb;
1222 while (!list_empty(tbs)) {
1223 ltb = list_entry(tbs->next, struct lnet_text_buf, ltb_list);
1225 if (lnet_parse_route(ltb->ltb_text, im_a_router) < 0) {
1226 lnet_free_text_bufs(tbs);
1230 list_del(<b->ltb_list);
1231 lnet_free_text_buf(ltb);
1238 lnet_parse_routes(const char *routes, int *im_a_router)
1245 if (lnet_str2tbs_sep(&tbs, routes) < 0) {
1246 CERROR("Error parsing routes\n");
1249 rc = lnet_parse_route_tbs(&tbs, im_a_router);
1252 LASSERT (lnet_tbnob == 0);
1257 lnet_match_network_token(char *token, int len, __u32 *ipaddrs, int nip)
1263 rc = cfs_ip_addr_parse(token, len, &list);
1267 for (rc = i = 0; !rc && i < nip; i++)
1268 rc = cfs_ip_addr_match(ipaddrs[i], &list);
1270 cfs_expr_list_free_list(&list);
1276 lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip)
1278 static char tokens[LNET_SINGLE_TEXTBUF_NOB];
1288 LASSERT(strlen(net_entry) < sizeof(tokens));
1290 /* work on a copy of the string */
1291 strcpy(tokens, net_entry);
1294 /* scan for token start */
1295 while (isspace(*sep))
1302 /* scan for token end */
1303 while (*sep != 0 && !isspace(*sep))
1308 if (ntokens++ == 0) {
1313 len = strlen(token);
1315 rc = lnet_match_network_token(token, len, ipaddrs, nip);
1317 lnet_syntax("ip2nets", net_entry,
1318 (int)(token - tokens), len);
1322 matched |= (rc != 0);
1328 strcpy(net_entry, net); /* replace with matched net */
1333 lnet_netspec2net(char *netspec)
1335 char *bracket = strchr(netspec, '(');
1338 if (bracket != NULL)
1341 net = libcfs_str2net(netspec);
1343 if (bracket != NULL)
1350 lnet_splitnets(char *source, struct list_head *nets)
1355 struct lnet_text_buf *tb;
1356 struct lnet_text_buf *tb2;
1357 struct list_head *t;
1362 LASSERT(!list_empty(nets));
1363 LASSERT(nets->next == nets->prev); /* single entry */
1365 tb = list_entry(nets->next, struct lnet_text_buf, ltb_list);
1368 sep = strchr(tb->ltb_text, ',');
1369 bracket = strchr(tb->ltb_text, '(');
1374 /* netspec lists interfaces... */
1376 offset2 = offset + (int)(bracket - tb->ltb_text);
1377 len = strlen(bracket);
1379 bracket = strchr(bracket + 1, ')');
1381 if (bracket == NULL ||
1382 !(bracket[1] == ',' || bracket[1] == 0)) {
1383 lnet_syntax("ip2nets", source, offset2, len);
1387 sep = (bracket[1] == 0) ? NULL : bracket + 1;
1393 net = lnet_netspec2net(tb->ltb_text);
1394 if (net == LNET_NET_ANY) {
1395 lnet_syntax("ip2nets", source, offset,
1396 strlen(tb->ltb_text));
1400 list_for_each(t, nets) {
1401 tb2 = list_entry(t, struct lnet_text_buf, ltb_list);
1406 if (net == lnet_netspec2net(tb2->ltb_text)) {
1407 /* duplicate network */
1408 lnet_syntax("ip2nets", source, offset,
1409 strlen(tb->ltb_text));
1417 offset += (int)(sep - tb->ltb_text);
1419 tb2 = lnet_new_text_buf(len);
1423 strncpy(tb2->ltb_text, sep, len);
1424 tb2->ltb_text[len] = '\0';
1425 list_add_tail(&tb2->ltb_list, nets);
1432 lnet_match_networks(const char **networksp, const char *ip2nets,
1433 __u32 *ipaddrs, int nip)
1435 static char networks[LNET_SINGLE_TEXTBUF_NOB];
1436 static char source[LNET_SINGLE_TEXTBUF_NOB];
1438 LIST_HEAD(raw_entries);
1439 LIST_HEAD(matched_nets);
1440 LIST_HEAD(current_nets);
1441 struct list_head *t;
1442 struct list_head *t2;
1443 struct lnet_text_buf *tb;
1448 if (lnet_str2tbs_sep(&raw_entries, ip2nets) < 0) {
1449 CERROR("Error parsing ip2nets\n");
1450 LASSERT(lnet_tbnob == 0);
1459 while (!list_empty(&raw_entries)) {
1460 tb = list_entry(raw_entries.next, struct lnet_text_buf,
1463 strncpy(source, tb->ltb_text, sizeof(source));
1464 source[sizeof(source) - 1] = '\0';
1466 /* replace ltb_text with the network(s) add on match */
1467 rc = lnet_match_network_tokens(tb->ltb_text, ipaddrs, nip);
1471 list_del(&tb->ltb_list);
1473 if (rc == 0) { /* no match */
1474 lnet_free_text_buf(tb);
1478 /* split into separate networks */
1479 INIT_LIST_HEAD(¤t_nets);
1480 list_add(&tb->ltb_list, ¤t_nets);
1481 rc = lnet_splitnets(source, ¤t_nets);
1485 list_for_each_safe(t, t2, ¤t_nets) {
1486 tb = list_entry(t, struct lnet_text_buf, ltb_list);
1488 list_move_tail(&tb->ltb_list, &matched_nets);
1490 len += scnprintf(networks + len, sizeof(networks) - len,
1491 "%s%s", (len == 0) ? "" : ",",
1494 if (len >= sizeof(networks)) {
1495 CERROR("Too many matched networks\n");
1505 lnet_free_text_bufs(&raw_entries);
1506 lnet_free_text_bufs(&matched_nets);
1507 lnet_free_text_bufs(¤t_nets);
1508 LASSERT(lnet_tbnob == 0);
1513 *networksp = networks;
1517 int lnet_inet_enumerate(struct lnet_inetdev **dev_list, struct net *ns)
1519 struct lnet_inetdev *ifaces = NULL;
1520 struct net_device *dev;
1523 DECLARE_CONST_IN_IFADDR(ifa);
1526 for_each_netdev(ns, dev) {
1527 int flags = dev_get_flags(dev);
1528 struct in_device *in_dev;
1532 if (flags & IFF_LOOPBACK) /* skip the loopback IF */
1535 if (!(flags & IFF_UP)) {
1536 CWARN("lnet: Ignoring interface %s: it's down\n",
1541 in_dev = __in_dev_get_rtnl(dev);
1543 CWARN("lnet: Interface %s has no IPv4 status.\n",
1548 node_id = dev_to_node(&dev->dev);
1549 cpt = cfs_cpt_of_node(lnet_cpt_table(), node_id);
1551 in_dev_for_each_ifa_rtnl(ifa, in_dev) {
1552 if (nip >= nalloc) {
1553 struct lnet_inetdev *tmp;
1555 nalloc += LNET_INTERFACES_NUM;
1556 tmp = krealloc(ifaces, nalloc * sizeof(*tmp),
1567 ifaces[nip].li_cpt = cpt;
1568 ifaces[nip].li_flags = flags;
1569 ifaces[nip].li_ipaddr = ntohl(ifa->ifa_local);
1570 ifaces[nip].li_netmask = ntohl(ifa->ifa_mask);
1571 strlcpy(ifaces[nip].li_name, ifa->ifa_label,
1572 sizeof(ifaces[nip].li_name));
1581 CERROR("lnet: Can't find any usable interfaces, rc = -ENOENT\n");
1588 EXPORT_SYMBOL(lnet_inet_enumerate);
1591 lnet_parse_ip2nets(const char **networksp, const char *ip2nets)
1593 struct lnet_inetdev *ifaces = NULL;
1594 __u32 *ipaddrs = NULL;
1599 if (current->nsproxy && current->nsproxy->net_ns)
1600 nip = lnet_inet_enumerate(&ifaces, current->nsproxy->net_ns);
1602 nip = lnet_inet_enumerate(&ifaces, &init_net);
1604 if (nip != -ENOENT) {
1605 LCONSOLE_ERROR_MSG(0x117,
1606 "Error %d enumerating local IP interfaces for ip2nets to match\n",
1609 LCONSOLE_ERROR_MSG(0x118,
1610 "No local IP interfaces for ip2nets to match\n");
1615 CFS_ALLOC_PTR_ARRAY(ipaddrs, nip);
1618 CERROR("lnet: Can't allocate ipaddrs[%d], rc = %d\n",
1620 goto out_free_addrs;
1623 for (i = 0; i < nip; i++)
1624 ipaddrs[i] = ifaces[i].li_ipaddr;
1626 rc = lnet_match_networks(networksp, ip2nets, ipaddrs, nip);
1628 LCONSOLE_ERROR_MSG(0x119, "Error %d parsing ip2nets\n", rc);
1629 } else if (rc == 0) {
1630 LCONSOLE_ERROR_MSG(0x11a, "ip2nets does not match "
1631 "any local IP interfaces\n");
1634 CFS_FREE_PTR_ARRAY(ipaddrs, nip);
1637 return rc > 0 ? 0 : rc;