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Merge pull request #5945 from pguibert6WIND/match_rmap_ipv4

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bgpd: support for match ip address next-hop address command
This commit is contained in:
Donatas Abraitis 2020-03-18 11:22:19 +02:00 committed by GitHub
commit 8577bb71f9
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 83 additions and 3 deletions
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75
bgpd/bgp_routemap.c
View File

@ -2830,6 +2830,57 @@ static const struct route_map_rule_cmd route_match_ipv6_next_hop_cmd = {
route_match_ipv6_next_hop_free
};
/* `match ip next-hop IP_ADDRESS' */
static enum route_map_cmd_result_t
route_match_ipv4_next_hop(void *rule, const struct prefix *prefix,
route_map_object_t type, void *object)
{
struct in_addr *addr = rule;
struct bgp_path_info *path;
if (type == RMAP_BGP) {
path = object;
if (path->attr->nexthop.s_addr == addr->s_addr ||
(path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV4 &&
IPV4_ADDR_SAME(&path->attr->mp_nexthop_global_in, addr)))
return RMAP_MATCH;
return RMAP_NOMATCH;
}
return RMAP_NOMATCH;
}
static void *route_match_ipv4_next_hop_compile(const char *arg)
{
struct in_addr *address;
int ret;
address = XMALLOC(MTYPE_ROUTE_MAP_COMPILED, sizeof(struct in_addr));
ret = inet_pton(AF_INET, arg, address);
if (!ret) {
XFREE(MTYPE_ROUTE_MAP_COMPILED, address);
return NULL;
}
return address;
}
static void route_match_ipv4_next_hop_free(void *rule)
{
XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}
static const struct route_map_rule_cmd route_match_ipv4_next_hop_cmd = {
"ip next-hop address",
route_match_ipv4_next_hop,
route_match_ipv4_next_hop_compile,
route_match_ipv4_next_hop_free
};
/* `match ipv6 address prefix-list PREFIX_LIST' */
static enum route_map_cmd_result_t
@ -5110,6 +5161,28 @@ DEFUN (no_match_ipv6_next_hop,
RMAP_EVENT_MATCH_DELETED);
}
DEFPY (match_ipv4_next_hop,
match_ipv4_next_hop_cmd,
"[no$no] match ip next-hop address [A.B.C.D]",
NO_STR
MATCH_STR
IP_STR
"Match IP next-hop address of route\n"
"IP address\n"
"IP address of next-hop\n")
{
int idx_ipv4 = 4;
if (no)
return bgp_route_match_delete(vty, "ip next-hop address", NULL,
RMAP_EVENT_MATCH_DELETED);
if (argv[idx_ipv4]->arg)
return bgp_route_match_add(vty, "ip next-hop address",
argv[idx_ipv4]->arg,
RMAP_EVENT_MATCH_ADDED);
return CMD_SUCCESS;
}
DEFUN (set_ipv6_nexthop_peer,
set_ipv6_nexthop_peer_cmd,
@ -5563,6 +5636,7 @@ void bgp_route_map_init(void)
route_map_install_match(&route_match_ipv6_address_cmd);
route_map_install_match(&route_match_ipv6_next_hop_cmd);
route_map_install_match(&route_match_ipv4_next_hop_cmd);
route_map_install_match(&route_match_ipv6_address_prefix_list_cmd);
route_map_install_match(&route_match_ipv6_next_hop_type_cmd);
route_map_install_set(&route_set_ipv6_nexthop_global_cmd);
@ -5572,6 +5646,7 @@ void bgp_route_map_init(void)
install_element(RMAP_NODE, &match_ipv6_next_hop_cmd);
install_element(RMAP_NODE, &no_match_ipv6_next_hop_cmd);
install_element(RMAP_NODE, &match_ipv4_next_hop_cmd);
install_element(RMAP_NODE, &set_ipv6_nexthop_global_cmd);
install_element(RMAP_NODE, &no_set_ipv6_nexthop_global_cmd);
install_element(RMAP_NODE, &set_ipv6_nexthop_prefer_global_cmd);

11
doc/user/routemap.rst
View File

@ -151,10 +151,15 @@ Route Map Match Command
Matches the specified `prefix-len`. This is a Zebra specific command.
.. index:: match ip next-hop IPV4_ADDR
.. clicmd:: match ip next-hop IPV4_ADDR
.. index:: match ip next-hop address IPV4_ADDR
.. clicmd:: match ip next-hop address IPV4_ADDR
Matches the specified `ipv4_addr`.
This is a BGP specific match command. Matches the specified `ipv4_addr`.
.. index:: match ipv6 next-hop IPV6_ADDR
.. clicmd:: match ipv6 next-hop IPV6_ADDR
This is a BGP specific match command. Matches the specified `ipv6_addr`.
.. index:: match as-path AS_PATH
.. clicmd:: match as-path AS_PATH