1 /* A generic nexthop structure
2 * Copyright (C) 2013 Cumulus Networks, Inc.
4 * This file is part of Quagga.
6 * Quagga is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * Quagga is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Quagga; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
30 #include "sockunion.h"
36 /* check if nexthops are same, non-recursive */
38 nexthop_same_no_recurse (struct nexthop *next1, struct nexthop *next2)
40 if (next1->type != next2->type)
45 case NEXTHOP_TYPE_IPV4:
46 case NEXTHOP_TYPE_IPV4_IFINDEX:
47 if (! IPV4_ADDR_SAME (&next1->gate.ipv4, &next2->gate.ipv4))
49 if (next1->ifindex && (next1->ifindex != next2->ifindex))
52 case NEXTHOP_TYPE_IFINDEX:
53 case NEXTHOP_TYPE_IFNAME:
54 if (next1->ifindex != next2->ifindex)
58 case NEXTHOP_TYPE_IPV6:
59 if (! IPV6_ADDR_SAME (&next1->gate.ipv6, &next2->gate.ipv6))
62 case NEXTHOP_TYPE_IPV6_IFINDEX:
63 case NEXTHOP_TYPE_IPV6_IFNAME:
64 if (! IPV6_ADDR_SAME (&next1->gate.ipv6, &next2->gate.ipv6))
66 if (next1->ifindex != next2->ifindex)
69 #endif /* HAVE_IPV6 */
81 nexthop_type_to_str (enum nexthop_types_t nh_type)
83 static const char *desc[] = {
88 "IPv4 nexthop with ifindex",
89 "IPv4 nexthop with ifname",
91 "IPv6 nexthop with ifindex",
92 "IPv6 nexthop with ifname",
96 if (nh_type >= ZEBRA_NUM_OF (desc))
97 return "<Invalid nh type>";
105 return XCALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop));
108 /* Add nexthop to the end of a nexthop list. */
110 nexthop_add (struct nexthop **target, struct nexthop *nexthop)
112 struct nexthop *last;
114 for (last = *target; last && last->next; last = last->next)
117 last->next = nexthop;
120 nexthop->prev = last;
124 copy_nexthops (struct nexthop **tnh, struct nexthop *nh)
126 struct nexthop *nexthop;
129 for (nh1 = nh; nh1; nh1 = nh1->next)
131 nexthop = nexthop_new();
132 nexthop->flags = nh->flags;
133 nexthop->type = nh->type;
134 nexthop->ifindex = nh->ifindex;
136 nexthop->ifname = XSTRDUP(0, nh->ifname);
137 memcpy(&(nexthop->gate), &(nh->gate), sizeof(union g_addr));
138 memcpy(&(nexthop->src), &(nh->src), sizeof(union g_addr));
139 nexthop_add(tnh, nexthop);
141 if (CHECK_FLAG(nh1->flags, NEXTHOP_FLAG_RECURSIVE))
142 copy_nexthops(&nexthop->resolved, nh1->resolved);
148 nexthop_free (struct nexthop *nexthop)
151 XFREE (0, nexthop->ifname);
152 if (nexthop->resolved)
153 nexthops_free(nexthop->resolved);
154 XFREE (MTYPE_NEXTHOP, nexthop);
157 /* Frees a list of nexthops */
159 nexthops_free (struct nexthop *nexthop)
161 struct nexthop *nh, *next;
163 for (nh = nexthop; nh; nh = next)