/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. */ #define DEBUG_SUBSYSTEM S_LNET #include typedef struct { /* tmp struct for parsing routes */ cfs_list_t ltb_list; /* stash on lists */ int ltb_size; /* allocated size */ char ltb_text[0]; /* text buffer */ } lnet_text_buf_t; static int lnet_tbnob = 0; /* track text buf allocation */ #define LNET_MAX_TEXTBUF_NOB (64<<10) /* bound allocation */ #define LNET_SINGLE_TEXTBUF_NOB (4<<10) void lnet_syntax(char *name, char *str, int offset, int width) { static char dots[LNET_SINGLE_TEXTBUF_NOB]; static char dashes[LNET_SINGLE_TEXTBUF_NOB]; memset(dots, '.', sizeof(dots)); dots[sizeof(dots)-1] = 0; memset(dashes, '-', sizeof(dashes)); dashes[sizeof(dashes)-1] = 0; LCONSOLE_ERROR_MSG(0x10f, "Error parsing '%s=\"%s\"'\n", name, str); LCONSOLE_ERROR_MSG(0x110, "here...........%.*s..%.*s|%.*s|\n", (int)strlen(name), dots, offset, dots, (width < 1) ? 0 : width - 1, dashes); } int lnet_issep (char c) { switch (c) { case '\n': case '\r': case ';': return 1; default: return 0; } } int lnet_net_unique(__u32 net, cfs_list_t *nilist) { cfs_list_t *tmp; lnet_ni_t *ni; cfs_list_for_each (tmp, nilist) { ni = cfs_list_entry(tmp, lnet_ni_t, ni_list); if (LNET_NIDNET(ni->ni_nid) == net) return 0; } return 1; } void lnet_ni_free(struct lnet_ni *ni) { if (ni->ni_refs != NULL) cfs_percpt_free(ni->ni_refs); if (ni->ni_tx_queues != NULL) cfs_percpt_free(ni->ni_tx_queues); if (ni->ni_cpts != NULL) cfs_expr_list_values_free(ni->ni_cpts, ni->ni_ncpts); #ifndef __KERNEL__ # ifdef HAVE_LIBPTHREAD pthread_mutex_destroy(&ni->ni_lock); # endif #endif LIBCFS_FREE(ni, sizeof(*ni)); } lnet_ni_t * lnet_ni_alloc(__u32 net, struct cfs_expr_list *el, cfs_list_t *nilist) { struct lnet_tx_queue *tq; struct lnet_ni *ni; int rc; int i; if (!lnet_net_unique(net, nilist)) { LCONSOLE_ERROR_MSG(0x111, "Duplicate network specified: %s\n", libcfs_net2str(net)); return NULL; } LIBCFS_ALLOC(ni, sizeof(*ni)); if (ni == NULL) { CERROR("Out of memory creating network %s\n", libcfs_net2str(net)); return NULL; } #ifdef __KERNEL__ cfs_spin_lock_init(&ni->ni_lock); #else # ifdef HAVE_LIBPTHREAD pthread_mutex_init(&ni->ni_lock, NULL); # endif #endif CFS_INIT_LIST_HEAD(&ni->ni_cptlist); ni->ni_refs = cfs_percpt_alloc(lnet_cpt_table(), sizeof(*ni->ni_refs[0])); if (ni->ni_refs == NULL) goto failed; ni->ni_tx_queues = cfs_percpt_alloc(lnet_cpt_table(), sizeof(*ni->ni_tx_queues[0])); if (ni->ni_tx_queues == NULL) goto failed; cfs_percpt_for_each(tq, i, ni->ni_tx_queues) CFS_INIT_LIST_HEAD(&tq->tq_delayed); if (el == NULL) { ni->ni_cpts = NULL; ni->ni_ncpts = LNET_CPT_NUMBER; } else { rc = cfs_expr_list_values(el, LNET_CPT_NUMBER, &ni->ni_cpts); if (rc <= 0) { CERROR("Failed to set CPTs for NI %s: %d\n", libcfs_net2str(net), rc); goto failed; } LASSERT(rc <= LNET_CPT_NUMBER); if (rc == LNET_CPT_NUMBER) { LIBCFS_FREE(ni->ni_cpts, rc * sizeof(ni->ni_cpts[0])); ni->ni_cpts = NULL; } ni->ni_ncpts = rc; } /* LND will fill in the address part of the NID */ ni->ni_nid = LNET_MKNID(net, 0); ni->ni_last_alive = cfs_time_current_sec(); cfs_list_add_tail(&ni->ni_list, nilist); return ni; failed: lnet_ni_free(ni); return NULL; } int lnet_parse_networks(cfs_list_t *nilist, char *networks) { struct cfs_expr_list *el = NULL; int tokensize = strlen(networks) + 1; char *tokens; char *str; char *tmp; struct lnet_ni *ni; __u32 net; int nnets = 0; if (strlen(networks) > LNET_SINGLE_TEXTBUF_NOB) { /* _WAY_ conservative */ LCONSOLE_ERROR_MSG(0x112, "Can't parse networks: string too " "long\n"); return -EINVAL; } LIBCFS_ALLOC(tokens, tokensize); if (tokens == NULL) { CERROR("Can't allocate net tokens\n"); return -ENOMEM; } the_lnet.ln_network_tokens = tokens; the_lnet.ln_network_tokens_nob = tokensize; memcpy (tokens, networks, tokensize); str = tmp = tokens; /* Add in the loopback network */ ni = lnet_ni_alloc(LNET_MKNET(LOLND, 0), NULL, nilist); if (ni == NULL) goto failed; while (str != NULL && *str != 0) { char *comma = strchr(str, ','); char *bracket = strchr(str, '('); char *square = strchr(str, '['); char *iface; int niface; int rc; /* NB we don't check interface conflicts here; it's the LNDs * responsibility (if it cares at all) */ if (square != NULL && (comma == NULL || square < comma)) { /* i.e: o2ib0(ib0)[1,2], number between square * brackets are CPTs this NI needs to be bond */ if (bracket != NULL && bracket > square) { tmp = square; goto failed_syntax; } tmp = strchr(square, ']'); if (tmp == NULL) { tmp = square; goto failed_syntax; } rc = cfs_expr_list_parse(square, tmp - square + 1, 0, LNET_CPT_NUMBER - 1, &el); if (rc != 0) { tmp = square; goto failed_syntax; } while (square <= tmp) *square++ = ' '; } if (bracket == NULL || (comma != NULL && comma < bracket)) { /* no interface list specified */ if (comma != NULL) *comma++ = 0; net = libcfs_str2net(cfs_trimwhite(str)); if (net == LNET_NIDNET(LNET_NID_ANY)) { LCONSOLE_ERROR_MSG(0x113, "Unrecognised network" " type\n"); tmp = str; goto failed_syntax; } if (LNET_NETTYP(net) != LOLND && /* LO is implicit */ lnet_ni_alloc(net, el, nilist) == NULL) goto failed; if (el != NULL) { cfs_expr_list_free(el); el = NULL; } str = comma; continue; } *bracket = 0; net = libcfs_str2net(cfs_trimwhite(str)); if (net == LNET_NIDNET(LNET_NID_ANY)) { tmp = str; goto failed_syntax; } nnets++; ni = lnet_ni_alloc(net, el, nilist); if (ni == NULL) goto failed; if (el != NULL) { cfs_expr_list_free(el); el = NULL; } niface = 0; iface = bracket + 1; bracket = strchr(iface, ')'); if (bracket == NULL) { tmp = iface; goto failed_syntax; } *bracket = 0; do { comma = strchr(iface, ','); if (comma != NULL) *comma++ = 0; iface = cfs_trimwhite(iface); if (*iface == 0) { tmp = iface; goto failed_syntax; } if (niface == LNET_MAX_INTERFACES) { LCONSOLE_ERROR_MSG(0x115, "Too many interfaces " "for net %s\n", libcfs_net2str(net)); goto failed; } ni->ni_interfaces[niface++] = iface; iface = comma; } while (iface != NULL); str = bracket + 1; comma = strchr(bracket + 1, ','); if (comma != NULL) { *comma = 0; str = cfs_trimwhite(str); if (*str != 0) { tmp = str; goto failed_syntax; } str = comma + 1; continue; } str = cfs_trimwhite(str); if (*str != 0) { tmp = str; goto failed_syntax; } } LASSERT(!cfs_list_empty(nilist)); return 0; failed_syntax: lnet_syntax("networks", networks, (int)(tmp - tokens), strlen(tmp)); failed: while (!cfs_list_empty(nilist)) { ni = cfs_list_entry(nilist->next, lnet_ni_t, ni_list); cfs_list_del(&ni->ni_list); lnet_ni_free(ni); } if (el != NULL) cfs_expr_list_free(el); LIBCFS_FREE(tokens, tokensize); the_lnet.ln_network_tokens = NULL; return -EINVAL; } lnet_text_buf_t * lnet_new_text_buf (int str_len) { lnet_text_buf_t *ltb; int nob; /* NB allocate space for the terminating 0 */ nob = offsetof(lnet_text_buf_t, ltb_text[str_len + 1]); if (nob > LNET_SINGLE_TEXTBUF_NOB) { /* _way_ conservative for "route net gateway..." */ CERROR("text buffer too big\n"); return NULL; } if (lnet_tbnob + nob > LNET_MAX_TEXTBUF_NOB) { CERROR("Too many text buffers\n"); return NULL; } LIBCFS_ALLOC(ltb, nob); if (ltb == NULL) return NULL; ltb->ltb_size = nob; ltb->ltb_text[0] = 0; lnet_tbnob += nob; return ltb; } void lnet_free_text_buf (lnet_text_buf_t *ltb) { lnet_tbnob -= ltb->ltb_size; LIBCFS_FREE(ltb, ltb->ltb_size); } void lnet_free_text_bufs(cfs_list_t *tbs) { lnet_text_buf_t *ltb; while (!cfs_list_empty(tbs)) { ltb = cfs_list_entry(tbs->next, lnet_text_buf_t, ltb_list); cfs_list_del(<b->ltb_list); lnet_free_text_buf(ltb); } } void lnet_print_text_bufs(cfs_list_t *tbs) { cfs_list_t *tmp; lnet_text_buf_t *ltb; cfs_list_for_each (tmp, tbs) { ltb = cfs_list_entry(tmp, lnet_text_buf_t, ltb_list); CDEBUG(D_WARNING, "%s\n", ltb->ltb_text); } CDEBUG(D_WARNING, "%d allocated\n", lnet_tbnob); } int lnet_str2tbs_sep (cfs_list_t *tbs, char *str) { cfs_list_t pending; char *sep; int nob; int i; lnet_text_buf_t *ltb; CFS_INIT_LIST_HEAD(&pending); /* Split 'str' into separate commands */ for (;;) { /* skip leading whitespace */ while (cfs_iswhite(*str)) str++; /* scan for separator or comment */ for (sep = str; *sep != 0; sep++) if (lnet_issep(*sep) || *sep == '#') break; nob = (int)(sep - str); if (nob > 0) { ltb = lnet_new_text_buf(nob); if (ltb == NULL) { lnet_free_text_bufs(&pending); return -1; } for (i = 0; i < nob; i++) if (cfs_iswhite(str[i])) ltb->ltb_text[i] = ' '; else ltb->ltb_text[i] = str[i]; ltb->ltb_text[nob] = 0; cfs_list_add_tail(<b->ltb_list, &pending); } if (*sep == '#') { /* scan for separator */ do { sep++; } while (*sep != 0 && !lnet_issep(*sep)); } if (*sep == 0) break; str = sep + 1; } cfs_list_splice(&pending, tbs->prev); return 0; } int lnet_expand1tb (cfs_list_t *list, char *str, char *sep1, char *sep2, char *item, int itemlen) { int len1 = (int)(sep1 - str); int len2 = strlen(sep2 + 1); lnet_text_buf_t *ltb; LASSERT (*sep1 == '['); LASSERT (*sep2 == ']'); ltb = lnet_new_text_buf(len1 + itemlen + len2); if (ltb == NULL) return -ENOMEM; memcpy(ltb->ltb_text, str, len1); memcpy(<b->ltb_text[len1], item, itemlen); memcpy(<b->ltb_text[len1+itemlen], sep2 + 1, len2); ltb->ltb_text[len1 + itemlen + len2] = 0; cfs_list_add_tail(<b->ltb_list, list); return 0; } int lnet_str2tbs_expand (cfs_list_t *tbs, char *str) { char num[16]; cfs_list_t pending; char *sep; char *sep2; char *parsed; char *enditem; int lo; int hi; int stride; int i; int nob; int scanned; CFS_INIT_LIST_HEAD(&pending); sep = strchr(str, '['); if (sep == NULL) /* nothing to expand */ return 0; sep2 = strchr(sep, ']'); if (sep2 == NULL) goto failed; for (parsed = sep; parsed < sep2; parsed = enditem) { enditem = ++parsed; while (enditem < sep2 && *enditem != ',') enditem++; if (enditem == parsed) /* no empty items */ goto failed; if (sscanf(parsed, "%d-%d/%d%n", &lo, &hi, &stride, &scanned) < 3) { if (sscanf(parsed, "%d-%d%n", &lo, &hi, &scanned) < 2) { /* simple string enumeration */ if (lnet_expand1tb(&pending, str, sep, sep2, parsed, (int)(enditem - parsed)) != 0) goto failed; continue; } stride = 1; } /* range expansion */ if (enditem != parsed + scanned) /* no trailing junk */ goto failed; if (hi < 0 || lo < 0 || stride < 0 || hi < lo || (hi - lo) % stride != 0) goto failed; for (i = lo; i <= hi; i += stride) { snprintf(num, sizeof(num), "%d", i); nob = strlen(num); if (nob + 1 == sizeof(num)) goto failed; if (lnet_expand1tb(&pending, str, sep, sep2, num, nob) != 0) goto failed; } } cfs_list_splice(&pending, tbs->prev); return 1; failed: lnet_free_text_bufs(&pending); return -1; } int lnet_parse_hops (char *str, unsigned int *hops) { int len = strlen(str); int nob = len; return (sscanf(str, "%u%n", hops, &nob) >= 1 && nob == len && *hops > 0 && *hops < 256); } int lnet_parse_route (char *str, int *im_a_router) { /* static scratch buffer OK (single threaded) */ static char cmd[LNET_SINGLE_TEXTBUF_NOB]; cfs_list_t nets; cfs_list_t gateways; cfs_list_t *tmp1; cfs_list_t *tmp2; __u32 net; lnet_nid_t nid; lnet_text_buf_t *ltb; int rc; char *sep; char *token = str; int ntokens = 0; int myrc = -1; unsigned int hops; int got_hops = 0; CFS_INIT_LIST_HEAD(&gateways); CFS_INIT_LIST_HEAD(&nets); /* save a copy of the string for error messages */ strncpy(cmd, str, sizeof(cmd) - 1); cmd[sizeof(cmd) - 1] = 0; sep = str; for (;;) { /* scan for token start */ while (cfs_iswhite(*sep)) sep++; if (*sep == 0) { if (ntokens < (got_hops ? 3 : 2)) goto token_error; break; } ntokens++; token = sep++; /* scan for token end */ while (*sep != 0 && !cfs_iswhite(*sep)) sep++; if (*sep != 0) *sep++ = 0; if (ntokens == 1) { tmp2 = &nets; /* expanding nets */ } else if (ntokens == 2 && lnet_parse_hops(token, &hops)) { got_hops = 1; /* got a hop count */ continue; } else { tmp2 = &gateways; /* expanding gateways */ } ltb = lnet_new_text_buf(strlen(token)); if (ltb == NULL) goto out; strcpy(ltb->ltb_text, token); tmp1 = <b->ltb_list; cfs_list_add_tail(tmp1, tmp2); while (tmp1 != tmp2) { ltb = cfs_list_entry(tmp1, lnet_text_buf_t, ltb_list); rc = lnet_str2tbs_expand(tmp1->next, ltb->ltb_text); if (rc < 0) goto token_error; tmp1 = tmp1->next; if (rc > 0) { /* expanded! */ cfs_list_del(<b->ltb_list); lnet_free_text_buf(ltb); continue; } if (ntokens == 1) { net = libcfs_str2net(ltb->ltb_text); if (net == LNET_NIDNET(LNET_NID_ANY) || LNET_NETTYP(net) == LOLND) goto token_error; } else { nid = libcfs_str2nid(ltb->ltb_text); if (nid == LNET_NID_ANY || LNET_NETTYP(LNET_NIDNET(nid)) == LOLND) goto token_error; } } } if (!got_hops) hops = 1; LASSERT (!cfs_list_empty(&nets)); LASSERT (!cfs_list_empty(&gateways)); cfs_list_for_each (tmp1, &nets) { ltb = cfs_list_entry(tmp1, lnet_text_buf_t, ltb_list); net = libcfs_str2net(ltb->ltb_text); LASSERT (net != LNET_NIDNET(LNET_NID_ANY)); cfs_list_for_each (tmp2, &gateways) { ltb = cfs_list_entry(tmp2, lnet_text_buf_t, ltb_list); nid = libcfs_str2nid(ltb->ltb_text); LASSERT (nid != LNET_NID_ANY); if (lnet_islocalnid(nid)) { *im_a_router = 1; continue; } rc = lnet_add_route (net, hops, nid); if (rc != 0) { CERROR("Can't create route " "to %s via %s\n", libcfs_net2str(net), libcfs_nid2str(nid)); goto out; } } } myrc = 0; goto out; token_error: lnet_syntax("routes", cmd, (int)(token - str), strlen(token)); out: lnet_free_text_bufs(&nets); lnet_free_text_bufs(&gateways); return myrc; } int lnet_parse_route_tbs(cfs_list_t *tbs, int *im_a_router) { lnet_text_buf_t *ltb; while (!cfs_list_empty(tbs)) { ltb = cfs_list_entry(tbs->next, lnet_text_buf_t, ltb_list); if (lnet_parse_route(ltb->ltb_text, im_a_router) < 0) { lnet_free_text_bufs(tbs); return -EINVAL; } cfs_list_del(<b->ltb_list); lnet_free_text_buf(ltb); } return 0; } int lnet_parse_routes (char *routes, int *im_a_router) { cfs_list_t tbs; int rc = 0; *im_a_router = 0; CFS_INIT_LIST_HEAD(&tbs); if (lnet_str2tbs_sep(&tbs, routes) < 0) { CERROR("Error parsing routes\n"); rc = -EINVAL; } else { rc = lnet_parse_route_tbs(&tbs, im_a_router); } LASSERT (lnet_tbnob == 0); return rc; } int lnet_match_network_token(char *token, int len, __u32 *ipaddrs, int nip) { CFS_LIST_HEAD (list); int rc; int i; rc = cfs_ip_addr_parse(token, len, &list); if (rc != 0) return rc; for (rc = i = 0; !rc && i < nip; i++) rc = cfs_ip_addr_match(ipaddrs[i], &list); cfs_ip_addr_free(&list); return rc; } int lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip) { static char tokens[LNET_SINGLE_TEXTBUF_NOB]; int matched = 0; int ntokens = 0; int len; char *net = NULL; char *sep; char *token; int rc; LASSERT (strlen(net_entry) < sizeof(tokens)); /* work on a copy of the string */ strcpy(tokens, net_entry); sep = tokens; for (;;) { /* scan for token start */ while (cfs_iswhite(*sep)) sep++; if (*sep == 0) break; token = sep++; /* scan for token end */ while (*sep != 0 && !cfs_iswhite(*sep)) sep++; if (*sep != 0) *sep++ = 0; if (ntokens++ == 0) { net = token; continue; } len = strlen(token); rc = lnet_match_network_token(token, len, ipaddrs, nip); if (rc < 0) { lnet_syntax("ip2nets", net_entry, (int)(token - tokens), len); return rc; } matched |= (rc != 0); } if (!matched) return 0; strcpy(net_entry, net); /* replace with matched net */ return 1; } __u32 lnet_netspec2net(char *netspec) { char *bracket = strchr(netspec, '('); __u32 net; if (bracket != NULL) *bracket = 0; net = libcfs_str2net(netspec); if (bracket != NULL) *bracket = '('; return net; } int lnet_splitnets(char *source, cfs_list_t *nets) { int offset = 0; int offset2; int len; lnet_text_buf_t *tb; lnet_text_buf_t *tb2; cfs_list_t *t; char *sep; char *bracket; __u32 net; LASSERT (!cfs_list_empty(nets)); LASSERT (nets->next == nets->prev); /* single entry */ tb = cfs_list_entry(nets->next, lnet_text_buf_t, ltb_list); for (;;) { sep = strchr(tb->ltb_text, ','); bracket = strchr(tb->ltb_text, '('); if (sep != NULL && bracket != NULL && bracket < sep) { /* netspec lists interfaces... */ offset2 = offset + (int)(bracket - tb->ltb_text); len = strlen(bracket); bracket = strchr(bracket + 1, ')'); if (bracket == NULL || !(bracket[1] == ',' || bracket[1] == 0)) { lnet_syntax("ip2nets", source, offset2, len); return -EINVAL; } sep = (bracket[1] == 0) ? NULL : bracket + 1; } if (sep != NULL) *sep++ = 0; net = lnet_netspec2net(tb->ltb_text); if (net == LNET_NIDNET(LNET_NID_ANY)) { lnet_syntax("ip2nets", source, offset, strlen(tb->ltb_text)); return -EINVAL; } cfs_list_for_each(t, nets) { tb2 = cfs_list_entry(t, lnet_text_buf_t, ltb_list); if (tb2 == tb) continue; if (net == lnet_netspec2net(tb2->ltb_text)) { /* duplicate network */ lnet_syntax("ip2nets", source, offset, strlen(tb->ltb_text)); return -EINVAL; } } if (sep == NULL) return 0; offset += (int)(sep - tb->ltb_text); tb2 = lnet_new_text_buf(strlen(sep)); if (tb2 == NULL) return -ENOMEM; strcpy(tb2->ltb_text, sep); cfs_list_add_tail(&tb2->ltb_list, nets); tb = tb2; } } int lnet_match_networks (char **networksp, char *ip2nets, __u32 *ipaddrs, int nip) { static char networks[LNET_SINGLE_TEXTBUF_NOB]; static char source[LNET_SINGLE_TEXTBUF_NOB]; cfs_list_t raw_entries; cfs_list_t matched_nets; cfs_list_t current_nets; cfs_list_t *t; cfs_list_t *t2; lnet_text_buf_t *tb; lnet_text_buf_t *tb2; __u32 net1; __u32 net2; int len; int count; int dup; int rc; CFS_INIT_LIST_HEAD(&raw_entries); if (lnet_str2tbs_sep(&raw_entries, ip2nets) < 0) { CERROR("Error parsing ip2nets\n"); LASSERT (lnet_tbnob == 0); return -EINVAL; } CFS_INIT_LIST_HEAD(&matched_nets); CFS_INIT_LIST_HEAD(¤t_nets); networks[0] = 0; count = 0; len = 0; rc = 0; while (!cfs_list_empty(&raw_entries)) { tb = cfs_list_entry(raw_entries.next, lnet_text_buf_t, ltb_list); strncpy(source, tb->ltb_text, sizeof(source)-1); source[sizeof(source)-1] = 0; /* replace ltb_text with the network(s) add on match */ rc = lnet_match_network_tokens(tb->ltb_text, ipaddrs, nip); if (rc < 0) break; cfs_list_del(&tb->ltb_list); if (rc == 0) { /* no match */ lnet_free_text_buf(tb); continue; } /* split into separate networks */ CFS_INIT_LIST_HEAD(¤t_nets); cfs_list_add(&tb->ltb_list, ¤t_nets); rc = lnet_splitnets(source, ¤t_nets); if (rc < 0) break; dup = 0; cfs_list_for_each (t, ¤t_nets) { tb = cfs_list_entry(t, lnet_text_buf_t, ltb_list); net1 = lnet_netspec2net(tb->ltb_text); LASSERT (net1 != LNET_NIDNET(LNET_NID_ANY)); cfs_list_for_each(t2, &matched_nets) { tb2 = cfs_list_entry(t2, lnet_text_buf_t, ltb_list); net2 = lnet_netspec2net(tb2->ltb_text); LASSERT (net2 != LNET_NIDNET(LNET_NID_ANY)); if (net1 == net2) { dup = 1; break; } } if (dup) break; } if (dup) { lnet_free_text_bufs(¤t_nets); continue; } cfs_list_for_each_safe(t, t2, ¤t_nets) { tb = cfs_list_entry(t, lnet_text_buf_t, ltb_list); cfs_list_del(&tb->ltb_list); cfs_list_add_tail(&tb->ltb_list, &matched_nets); len += snprintf(networks + len, sizeof(networks) - len, "%s%s", (len == 0) ? "" : ",", tb->ltb_text); if (len >= sizeof(networks)) { CERROR("Too many matched networks\n"); rc = -E2BIG; goto out; } } count++; } out: lnet_free_text_bufs(&raw_entries); lnet_free_text_bufs(&matched_nets); lnet_free_text_bufs(¤t_nets); LASSERT (lnet_tbnob == 0); if (rc < 0) return rc; *networksp = networks; return count; } #ifdef __KERNEL__ void lnet_ipaddr_free_enumeration(__u32 *ipaddrs, int nip) { LIBCFS_FREE(ipaddrs, nip * sizeof(*ipaddrs)); } int lnet_ipaddr_enumerate (__u32 **ipaddrsp) { int up; __u32 netmask; __u32 *ipaddrs; __u32 *ipaddrs2; int nip; char **ifnames; int nif = libcfs_ipif_enumerate(&ifnames); int i; int rc; if (nif <= 0) return nif; LIBCFS_ALLOC(ipaddrs, nif * sizeof(*ipaddrs)); if (ipaddrs == NULL) { CERROR("Can't allocate ipaddrs[%d]\n", nif); libcfs_ipif_free_enumeration(ifnames, nif); return -ENOMEM; } for (i = nip = 0; i < nif; i++) { if (!strcmp(ifnames[i], "lo")) continue; rc = libcfs_ipif_query(ifnames[i], &up, &ipaddrs[nip], &netmask); if (rc != 0) { CWARN("Can't query interface %s: %d\n", ifnames[i], rc); continue; } if (!up) { CWARN("Ignoring interface %s: it's down\n", ifnames[i]); continue; } nip++; } libcfs_ipif_free_enumeration(ifnames, nif); if (nip == nif) { *ipaddrsp = ipaddrs; } else { if (nip > 0) { LIBCFS_ALLOC(ipaddrs2, nip * sizeof(*ipaddrs2)); if (ipaddrs2 == NULL) { CERROR("Can't allocate ipaddrs[%d]\n", nip); nip = -ENOMEM; } else { memcpy(ipaddrs2, ipaddrs, nip * sizeof(*ipaddrs)); *ipaddrsp = ipaddrs2; rc = nip; } } lnet_ipaddr_free_enumeration(ipaddrs, nif); } return nip; } int lnet_parse_ip2nets (char **networksp, char *ip2nets) { __u32 *ipaddrs; int nip = lnet_ipaddr_enumerate(&ipaddrs); int rc; if (nip < 0) { LCONSOLE_ERROR_MSG(0x117, "Error %d enumerating local IP " "interfaces for ip2nets to match\n", nip); return nip; } if (nip == 0) { LCONSOLE_ERROR_MSG(0x118, "No local IP interfaces " "for ip2nets to match\n"); return -ENOENT; } rc = lnet_match_networks(networksp, ip2nets, ipaddrs, nip); lnet_ipaddr_free_enumeration(ipaddrs, nip); if (rc < 0) { LCONSOLE_ERROR_MSG(0x119, "Error %d parsing ip2nets\n", rc); return rc; } if (rc == 0) { LCONSOLE_ERROR_MSG(0x11a, "ip2nets does not match " "any local IP interfaces\n"); return -ENOENT; } return 0; } int lnet_set_ip_niaddr (lnet_ni_t *ni) { __u32 net = LNET_NIDNET(ni->ni_nid); char **names; int n; __u32 ip; __u32 netmask; int up; int i; int rc; /* Convenience for LNDs that use the IP address of a local interface as * the local address part of their NID */ if (ni->ni_interfaces[0] != NULL) { CLASSERT (LNET_MAX_INTERFACES > 1); if (ni->ni_interfaces[1] != NULL) { CERROR("Net %s doesn't support multiple interfaces\n", libcfs_net2str(net)); return -EPERM; } rc = libcfs_ipif_query(ni->ni_interfaces[0], &up, &ip, &netmask); if (rc != 0) { CERROR("Net %s can't query interface %s: %d\n", libcfs_net2str(net), ni->ni_interfaces[0], rc); return -EPERM; } if (!up) { CERROR("Net %s can't use interface %s: it's down\n", libcfs_net2str(net), ni->ni_interfaces[0]); return -ENETDOWN; } ni->ni_nid = LNET_MKNID(net, ip); return 0; } n = libcfs_ipif_enumerate(&names); if (n <= 0) { CERROR("Net %s can't enumerate interfaces: %d\n", libcfs_net2str(net), n); return 0; } for (i = 0; i < n; i++) { if (!strcmp(names[i], "lo")) /* skip the loopback IF */ continue; rc = libcfs_ipif_query(names[i], &up, &ip, &netmask); if (rc != 0) { CWARN("Net %s can't query interface %s: %d\n", libcfs_net2str(net), names[i], rc); continue; } if (!up) { CWARN("Net %s ignoring interface %s (down)\n", libcfs_net2str(net), names[i]); continue; } libcfs_ipif_free_enumeration(names, n); ni->ni_nid = LNET_MKNID(net, ip); return 0; } CERROR("Net %s can't find any interfaces\n", libcfs_net2str(net)); libcfs_ipif_free_enumeration(names, n); return -ENOENT; } EXPORT_SYMBOL(lnet_set_ip_niaddr); #endif