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bgpd: conditional advertisement - comments addressed

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Signed-off-by: Madhuri Kuruganti <k.madhuri@samsung.com>
This commit is contained in:
Madhuri Kuruganti 2020-10-07 17:40:00 +05:30
parent c385f82af3
commit cf2ad4d8a6
5 changed files with 126 additions and 195 deletions
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2
bgpd/bgp_conditional_adv.c
View File

@ -54,7 +54,7 @@ bgp_check_rmap_prefixes_in_bgp_table(struct bgp_table *table,
static void bgp_conditional_adv_routes(struct peer *peer, afi_t afi,
safi_t safi, struct bgp_table *table,
struct route_map *rmap,
enum advertise advertise)
enum update_type advertise)
{
int addpath_capable;
const struct prefix *dest_p;

1
bgpd/bgp_route.c
View File

@ -2039,6 +2039,7 @@ bool subgroup_announce_check(struct bgp_dest *dest, struct bgp_path_info *pi,
|| CONDITION_MAP_NAME(filter)) {
struct peer *temp_peer;
struct listnode *temp_node, *temp_nnode = NULL;
for (ALL_LIST_ELEMENTS(bgp->peer, temp_node,
temp_nnode, temp_peer)) {
if (!CHECK_FLAG(peer->flags,

106
bgpd/bgp_vty.c
View File

@ -7046,8 +7046,9 @@ ALIAS_HIDDEN(no_neighbor_filter_list, no_neighbor_filter_list_hidden_cmd,
/* Set advertise-map to the peer. */
static int peer_advertise_map_set_vty(struct vty *vty, const char *ip_str,
afi_t afi, safi_t safi,
const char *advertise_str, bool condition,
const char *condition_str)
const char *advertise_str,
const char *condition_str, bool condition,
bool set)
{
int ret = CMD_WARNING_CONFIG_FAILED;
struct peer *peer;
@ -7061,42 +7062,22 @@ static int peer_advertise_map_set_vty(struct vty *vty, const char *ip_str,
condition_map = route_map_lookup_warn_noexist(vty, condition_str);
advertise_map = route_map_lookup_warn_noexist(vty, advertise_str);
ret = peer_advertise_map_set(peer, afi, safi, advertise_str,
advertise_map, condition, condition_str,
condition_map);
if (set)
ret = peer_advertise_map_set(peer, afi, safi, advertise_str,
advertise_map, condition_str,
condition_map, condition);
else
ret = peer_advertise_map_unset(peer, afi, safi, advertise_str,
advertise_map, condition_str,
condition_map, condition);
return bgp_vty_return(vty, ret);
}
static int peer_advertise_map_unset_vty(struct vty *vty, const char *ip_str,
afi_t afi, safi_t safi,
const char *advertise_str,
bool condition,
const char *condition_str)
{
int ret = CMD_WARNING_CONFIG_FAILED;
struct peer *peer;
struct route_map *advertise_map;
struct route_map *condition_map;
peer = peer_and_group_lookup_vty(vty, ip_str);
if (!peer)
return ret;
condition_map = route_map_lookup_warn_noexist(vty, condition_str);
advertise_map = route_map_lookup_warn_noexist(vty, advertise_str);
ret = peer_advertise_map_unset(peer, afi, safi, advertise_str,
advertise_map, condition, condition_str,
condition_map);
return bgp_vty_return(vty, ret);
}
DEFUN (neighbor_advertise_map,
DEFPY (neighbor_advertise_map,
neighbor_advertise_map_cmd,
"neighbor <A.B.C.D|X:X::X:X|WORD> advertise-map WORD <exist-map WORD|non-exist-map WORD>",
"[no$no] neighbor <A.B.C.D|X:X::X:X|WORD> advertise-map WORD <exist-map WORD|non-exist-map WORD>",
NO_STR
NEIGHBOR_STR
NEIGHBOR_ADDR_STR2
"Route-map to conditionally advertise routes\n"
@ -7112,55 +7093,23 @@ DEFUN (neighbor_advertise_map,
int idx_condition_word = 5;
bool condition = CONDITION_EXIST;
if (no) {
idx_peer++;
idx_advertise_word++;
idx_condition_word++;
}
if (argv_find(argv, argc, "non-exist-map", &idx))
condition = CONDITION_NON_EXIST;
return peer_advertise_map_set_vty(
vty, argv[idx_peer]->arg, bgp_node_afi(vty), bgp_node_safi(vty),
argv[idx_advertise_word]->arg, condition,
argv[idx_condition_word]->arg);
argv[idx_advertise_word]->arg, argv[idx_condition_word]->arg,
condition, !no);
}
ALIAS_HIDDEN(neighbor_advertise_map, neighbor_advertise_map_hidden_cmd,
"neighbor <A.B.C.D|X:X::X:X|WORD> advertise-map WORD <exist-map WORD|non-exist-map WORD>",
NEIGHBOR_STR NEIGHBOR_ADDR_STR2
"Route-map to conditionally advertise routes\n"
"Name of advertise map\n"
"Advertise routes only if prefixes in exist-map are installed in BGP table\n"
"Name of the exist map\n"
"Advertise routes only if prefixes in non-exist-map are not installed in BGP table\n"
"Name of the non exist map\n")
DEFUN (no_neighbor_advertise_map,
no_neighbor_advertise_map_cmd,
"no neighbor <A.B.C.D|X:X::X:X|WORD> advertise-map WORD <exist-map WORD|non-exist-map WORD>",
NO_STR
NEIGHBOR_STR
NEIGHBOR_ADDR_STR2
"Route-map to conditionally advertise routes\n"
"Name of advertise map\n"
"Advertise routes only if prefixes in exist-map are installed in BGP table\n"
"Name of the exist map\n"
"Advertise routes only if prefixes in non-exist-map are not installed in BGP table\n"
"Name of the non exist map\n")
{
int idx = 0;
int idx_peer = 2;
int idx_advertise_word = 4;
int idx_condition_word = 6;
bool condition = CONDITION_EXIST;
if (argv_find(argv, argc, "non-exist-map", &idx))
condition = CONDITION_NON_EXIST;
return peer_advertise_map_unset_vty(
vty, argv[idx_peer]->arg, bgp_node_afi(vty), bgp_node_safi(vty),
argv[idx_advertise_word]->arg, condition,
argv[idx_condition_word]->arg);
}
ALIAS_HIDDEN(no_neighbor_advertise_map, no_neighbor_advertise_map_hidden_cmd,
"no neighbor <A.B.C.D|X:X::X:X|WORD> advertise-map WORD <exist-map WORD|non-exist-map WORD>",
"[no$no] neighbor <A.B.C.D|X:X::X:X|WORD> advertise-map WORD <exist-map WORD|non-exist-map WORD>",
NO_STR NEIGHBOR_STR NEIGHBOR_ADDR_STR2
"Route-map to conditionally advertise routes\n"
"Name of advertise map\n"
@ -17543,23 +17492,14 @@ void bgp_vty_init(void)
/* "neighbor advertise-map" commands. */
install_element(BGP_NODE, &neighbor_advertise_map_hidden_cmd);
install_element(BGP_NODE, &no_neighbor_advertise_map_hidden_cmd);
install_element(BGP_IPV4_NODE, &neighbor_advertise_map_cmd);
install_element(BGP_IPV4_NODE, &no_neighbor_advertise_map_cmd);
install_element(BGP_IPV4M_NODE, &neighbor_advertise_map_cmd);
install_element(BGP_IPV4M_NODE, &no_neighbor_advertise_map_cmd);
install_element(BGP_IPV4L_NODE, &neighbor_advertise_map_cmd);
install_element(BGP_IPV4L_NODE, &no_neighbor_advertise_map_cmd);
install_element(BGP_IPV6_NODE, &neighbor_advertise_map_cmd);
install_element(BGP_IPV6_NODE, &no_neighbor_advertise_map_cmd);
install_element(BGP_IPV6M_NODE, &neighbor_advertise_map_cmd);
install_element(BGP_IPV6M_NODE, &no_neighbor_advertise_map_cmd);
install_element(BGP_IPV6L_NODE, &neighbor_advertise_map_cmd);
install_element(BGP_IPV6L_NODE, &no_neighbor_advertise_map_cmd);
install_element(BGP_VPNV4_NODE, &neighbor_advertise_map_cmd);
install_element(BGP_VPNV4_NODE, &no_neighbor_advertise_map_cmd);
install_element(BGP_VPNV6_NODE, &neighbor_advertise_map_cmd);
install_element(BGP_VPNV6_NODE, &no_neighbor_advertise_map_cmd);
/* neighbor maximum-prefix-out commands. */
install_element(BGP_NODE, &neighbor_maximum_prefix_out_cmd);

186
bgpd/bgpd.c
View File

@ -6586,6 +6586,59 @@ int peer_unsuppress_map_unset(struct peer *peer, afi_t afi, safi_t safi)
return 0;
}
static void peer_update_rmap_filter_data(struct peer *peer, afi_t afi,
safi_t safi, const char *rmap_name1,
struct route_map *rmap1,
const char *rmap_name2,
struct route_map *rmap2,
uint8_t config_flags)
{
struct bgp_filter *filter;
bool filter_exists = false;
filter = &peer->filter[afi][safi];
if (CHECK_FLAG(config_flags, BGP_PEER_ADVERTISE_MAP)) {
/* advertise-map is already configured. */
if (filter->advmap.aname) {
filter_exists = true;
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.aname);
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.cname);
}
route_map_counter_decrement(filter->advmap.amap);
/* Removed advertise-map configuration */
if (!CHECK_FLAG(config_flags, BGP_PEER_RMAP_SET)) {
memset(filter, 0, sizeof(struct bgp_filter));
/* decrement condition_filter_count delete timer if last
* one */
if (filter_exists)
bgp_conditional_adv_disable(peer, afi, safi);
return;
}
/* Update filter data with newly configured values. */
filter->advmap.aname =
XSTRDUP(MTYPE_BGP_FILTER_NAME, rmap_name1);
filter->advmap.cname =
XSTRDUP(MTYPE_BGP_FILTER_NAME, rmap_name2);
filter->advmap.amap = rmap1;
filter->advmap.cmap = rmap2;
filter->advmap.condition =
CHECK_FLAG(config_flags, BGP_PEER_CONDITION_EXIST);
route_map_counter_increment(filter->advmap.amap);
peer->advmap_config_change[afi][safi] = true;
/* Increment condition_filter_count and/or create timer. */
if (!filter_exists) {
filter->advmap.advertise = ADVERTISE;
bgp_conditional_adv_enable(peer, afi, safi);
}
}
}
/* Set advertise-map to the peer but do not process peer route updates here. *
* Hold filter changes until the conditional routes polling thread is called *
* AS we need to advertise/withdraw prefixes (in advertise-map) based on the *
@ -6595,50 +6648,29 @@ int peer_unsuppress_map_unset(struct peer *peer, afi_t afi, safi_t safi)
*/
int peer_advertise_map_set(struct peer *peer, afi_t afi, safi_t safi,
const char *advertise_name,
struct route_map *advertise_map, bool condition,
struct route_map *advertise_map,
const char *condition_name,
struct route_map *condition_map)
struct route_map *condition_map, bool condition)
{
bool filter_exists = false;
uint8_t config_flags = 0;
struct peer *member;
struct bgp_filter *filter;
struct listnode *node, *nnode;
SET_FLAG(config_flags, BGP_PEER_RMAP_SET);
SET_FLAG(config_flags, BGP_PEER_ADVERTISE_MAP);
if (condition)
SET_FLAG(config_flags, BGP_PEER_CONDITION_EXIST);
/* Set configuration on peer. */
filter = &peer->filter[afi][safi];
peer_update_rmap_filter_data(peer, afi, safi, advertise_name,
advertise_map, condition_name,
condition_map, config_flags);
if (filter->advmap.aname) {
/* advertise-map filter is already configured on this peer */
filter_exists = true;
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.aname);
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.cname);
filter->advmap.condition = CONDITION_NON_EXIST;
}
route_map_counter_decrement(filter->advmap.amap);
filter->advmap.aname = XSTRDUP(MTYPE_BGP_FILTER_NAME, advertise_name);
filter->advmap.cname = XSTRDUP(MTYPE_BGP_FILTER_NAME, condition_name);
filter->advmap.amap = advertise_map;
filter->advmap.cmap = condition_map;
filter->advmap.condition = condition;
route_map_counter_increment(advertise_map);
peer->advmap_config_change[afi][safi] = true;
/* Check if handling a regular peer. */
/* Check if handling a regular peer & Skip peer-group mechanics. */
if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) {
/* Set override-flag and process peer route updates. */
SET_FLAG(peer->filter_override[afi][safi][RMAP_OUT],
PEER_FT_ADVERTISE_MAP);
/* Hold peer_on_policy_change() until timer thread is called.
* Increment condition_filter_count and/or create timer.
*/
if (!filter_exists) {
filter->advmap.advertise = ADVERTISE;
bgp_conditional_adv_enable(peer, afi, safi);
}
/* Skip peer-group mechanics for regular peers. */
return 0;
}
@ -6653,31 +6685,9 @@ int peer_advertise_map_set(struct peer *peer, afi_t afi, safi_t safi,
continue;
/* Set configuration on peer-group member. */
filter = &member->filter[afi][safi];
if (filter->advmap.aname) {
/* advertise-map filter is already configured. */
filter_exists = true;
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.aname);
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.cname);
filter->advmap.condition = CONDITION_NON_EXIST;
}
route_map_counter_decrement(filter->advmap.amap);
filter->advmap.aname =
XSTRDUP(MTYPE_BGP_FILTER_NAME, advertise_name);
filter->advmap.amap = advertise_map;
filter->advmap.cname =
XSTRDUP(MTYPE_BGP_FILTER_NAME, condition_name);
filter->advmap.cmap = condition_map;
filter->advmap.condition = condition;
route_map_counter_increment(advertise_map);
/* Hold peer_on_policy_change() until timer thread is called.
* Increment condition_filter_count, create timer if 1st one
*/
if (!filter_exists) {
filter->advmap.advertise = ADVERTISE;
bgp_conditional_adv_enable(member, afi, safi);
}
peer_update_rmap_filter_data(member, afi, safi, advertise_name,
advertise_map, condition_name,
condition_map, config_flags);
}
return 0;
@ -6686,15 +6696,18 @@ int peer_advertise_map_set(struct peer *peer, afi_t afi, safi_t safi,
/* Unset advertise-map from the peer. */
int peer_advertise_map_unset(struct peer *peer, afi_t afi, safi_t safi,
const char *advertise_name,
struct route_map *advertise_map, bool condition,
struct route_map *advertise_map,
const char *condition_name,
struct route_map *condition_map)
struct route_map *condition_map, bool condition)
{
bool filter_exists = false;
uint8_t config_flags = 0;
struct peer *member;
struct bgp_filter *filter;
struct listnode *node, *nnode;
SET_FLAG(config_flags, BGP_PEER_ADVERTISE_MAP);
if (condition)
SET_FLAG(config_flags, BGP_PEER_CONDITION_EXIST);
/* Unset override-flag unconditionally. */
UNSET_FLAG(peer->filter_override[afi][safi][RMAP_OUT],
PEER_FT_ADVERTISE_MAP);
@ -6706,33 +6719,15 @@ int peer_advertise_map_unset(struct peer *peer, afi_t afi, safi_t safi,
MTYPE_BGP_FILTER_NAME);
PEER_ATTR_INHERIT(peer, peer->group,
filter[afi][safi].advmap.amap);
} else {
/* Otherwise remove configuration from peer. */
filter = &peer->filter[afi][safi];
if (filter->advmap.aname) {
/* advertise-map filter is already configured. */
filter_exists = true;
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.aname);
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.cname);
}
route_map_counter_decrement(filter->advmap.amap);
filter->advmap.aname = NULL;
filter->advmap.amap = NULL;
filter->advmap.cname = NULL;
filter->advmap.cmap = NULL;
filter->advmap.condition = CONDITION_NON_EXIST;
}
} else
peer_update_rmap_filter_data(peer, afi, safi, advertise_name,
advertise_map, condition_name,
condition_map, config_flags);
/* Check if handling a regular peer. */
/* Check if handling a regular peer and skip peer-group mechanics. */
if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) {
/* Process peer route updates. */
peer_on_policy_change(peer, afi, safi, 1);
/* decrement condition_filter_count delete timer if last one */
if (filter_exists)
bgp_conditional_adv_disable(peer, afi, safi);
/* Skip peer-group mechanics for regular peers. */
return 0;
}
@ -6745,25 +6740,10 @@ int peer_advertise_map_unset(struct peer *peer, afi_t afi, safi_t safi,
if (CHECK_FLAG(member->filter_override[afi][safi][RMAP_OUT],
PEER_FT_ADVERTISE_MAP))
continue;
/* Remove configuration on peer-group member. */
filter = &member->filter[afi][safi];
if (filter->advmap.aname) {
/* advertise-map filter is already configured. */
filter_exists = true;
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.aname);
XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.cname);
}
route_map_counter_decrement(filter->advmap.amap);
filter->advmap.aname = NULL;
filter->advmap.amap = NULL;
filter->advmap.cname = NULL;
filter->advmap.cmap = NULL;
filter->advmap.condition = CONDITION_NON_EXIST;
/* decrement condition_filter_count delete timer if last one */
if (filter_exists)
bgp_conditional_adv_disable(peer, afi, safi);
peer_update_rmap_filter_data(member, afi, safi, advertise_name,
advertise_map, condition_name,
condition_map, config_flags);
/* Process peer route updates. */
peer_on_policy_change(member, afi, safi, 1);

26
bgpd/bgpd.h
View File

@ -764,10 +764,18 @@ struct bgp_nexthop {
#define BGP_GTSM_HOPS_CONNECTED 1
/* Advertise map */
#define CONDITION_NON_EXIST false
#define CONDITION_EXIST true
#define CONDITION_NON_EXIST false
#define CONDITION_EXIST true
enum advertise { WITHDRAW, ADVERTISE };
/* BGP peer RMAP options */
#define BGP_PEER_ADVERTISE_MAP (1 << 0)
#define BGP_PEER_ROUTE_MAP (1 << 1)
#define BGP_PEER_UNSUPPRESS_MAP (1 << 2)
#define BGP_PEER_CONDITION_EXIST (1 << 3)
#define BGP_PEER_RMAP_DIRECTION (1 << 4)
#define BGP_PEER_RMAP_SET (1 << 5)
enum update_type { WITHDRAW, ADVERTISE };
#include "filter.h"
@ -813,7 +821,7 @@ struct bgp_filter {
char *cname;
struct route_map *cmap;
enum advertise advertise;
enum update_type advertise;
} advmap;
};
@ -1970,8 +1978,9 @@ extern int peer_unsuppress_map_set(struct peer *peer, afi_t afi, safi_t safi,
extern int peer_advertise_map_set(struct peer *peer, afi_t afi, safi_t safi,
const char *advertise_name,
struct route_map *advertise_map,
bool condition, const char *condition_name,
struct route_map *condition_map);
const char *condition_name,
struct route_map *condition_map,
bool condition);
extern int peer_password_set(struct peer *, const char *);
extern int peer_password_unset(struct peer *);
@ -1981,8 +1990,9 @@ extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
extern int peer_advertise_map_unset(struct peer *peer, afi_t afi, safi_t safi,
const char *advertise_name,
struct route_map *advertise_map,
bool condition, const char *condition_name,
struct route_map *condition_map);
const char *condition_name,
struct route_map *condition_map,
bool condition);
extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
uint8_t, int, uint16_t, bool force);