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Merge pull request #15410 from louis-6wind/optim-nhflags

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bgpd: move mp_nexthop_prefer_global boolean attribute to nh_flags
This commit is contained in:
Donatas Abraitis 2024-02-23 10:18:15 +02:00 committed by GitHub
commit a32d76e8c6
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GPG Key ID: B5690EEEBB952194
7 changed files with 32 additions and 22 deletions
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4
bgpd/bgp_attr.h
View File

@ -159,6 +159,7 @@ struct attr {
#define BGP_ATTR_NH_VALID 0x01
#define BGP_ATTR_NH_IF_OPERSTATE 0x02
#define BGP_ATTR_NH_MP_PREFER_GLOBAL 0x04 /* MP Nexthop preference */
/* Path origin attribute */
uint8_t origin;
@ -255,9 +256,6 @@ struct attr {
/* MP Nexthop length */
uint8_t mp_nexthop_len;
/* MP Nexthop preference */
uint8_t mp_nexthop_prefer_global;
/* Static MAC for EVPN */
uint8_t sticky;

12
bgpd/bgp_mpath.c
View File

@ -129,15 +129,19 @@ int bgp_path_info_nexthop_cmp(struct bgp_path_info *bpi1,
&bpi2->attr->mp_nexthop_global);
break;
case BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL:
addr1 = (bpi1->attr->mp_nexthop_prefer_global)
addr1 = (CHECK_FLAG(bpi1->attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL))
? bpi1->attr->mp_nexthop_global
: bpi1->attr->mp_nexthop_local;
addr2 = (bpi2->attr->mp_nexthop_prefer_global)
addr2 = (CHECK_FLAG(bpi2->attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL))
? bpi2->attr->mp_nexthop_global
: bpi2->attr->mp_nexthop_local;
if (!bpi1->attr->mp_nexthop_prefer_global
&& !bpi2->attr->mp_nexthop_prefer_global)
if (!CHECK_FLAG(bpi1->attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL) &&
!CHECK_FLAG(bpi2->attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL))
compare = !bgp_interface_same(
bpi1->peer->ifp,
bpi2->peer->ifp);

3
bgpd/bgp_nht.c
View File

@ -1065,7 +1065,8 @@ static int make_prefix(int afi, struct bgp_path_info *pi, struct prefix *p)
*/
else if (pi->attr->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) {
if (pi->attr->mp_nexthop_prefer_global)
if (CHECK_FLAG(pi->attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL))
p->u.prefix6 =
pi->attr->mp_nexthop_global;
else

22
bgpd/bgp_route.c
View File

@ -9323,9 +9323,10 @@ void route_vty_out(struct vty *vty, const struct prefix *p,
"link-local");
if ((IPV6_ADDR_CMP(&attr->mp_nexthop_global,
&attr->mp_nexthop_local)
!= 0)
&& !attr->mp_nexthop_prefer_global)
&attr->mp_nexthop_local) !=
0) &&
!CHECK_FLAG(attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL))
json_object_boolean_true_add(
json_nexthop_ll, "used");
else
@ -9337,10 +9338,11 @@ void route_vty_out(struct vty *vty, const struct prefix *p,
} else {
/* Display LL if LL/Global both in table unless
* prefer-global is set */
if (((attr->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL)
&& !attr->mp_nexthop_prefer_global)
|| (path->peer->conf_if)) {
if (((attr->mp_nexthop_len ==
BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) &&
!CHECK_FLAG(attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL)) ||
(path->peer->conf_if)) {
if (path->peer->conf_if) {
len = vty_out(vty, "%s",
path->peer->conf_if);
@ -10588,7 +10590,8 @@ void route_vty_out_detail(struct vty *vty, struct bgp *bgp, struct bgp_dest *bn,
json_object_boolean_true_add(json_nexthop_ll,
"accessible");
if (!attr->mp_nexthop_prefer_global)
if (!CHECK_FLAG(attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL))
json_object_boolean_true_add(json_nexthop_ll,
"used");
else
@ -10598,7 +10601,8 @@ void route_vty_out_detail(struct vty *vty, struct bgp *bgp, struct bgp_dest *bn,
vty_out(vty, " (%s) %s\n",
inet_ntop(AF_INET6, &attr->mp_nexthop_local,
buf, INET6_ADDRSTRLEN),
attr->mp_nexthop_prefer_global
CHECK_FLAG(attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL)
? "(prefer-global)"
: "(used)");
}

4
bgpd/bgp_routemap.c
View File

@ -3935,11 +3935,11 @@ route_set_ipv6_nexthop_prefer_global(void *rule, const struct prefix *prefix,
if (CHECK_FLAG(peer->rmap_type, PEER_RMAP_TYPE_IN)
|| CHECK_FLAG(peer->rmap_type, PEER_RMAP_TYPE_IMPORT)) {
/* Set next hop preference to global */
path->attr->mp_nexthop_prefer_global = true;
SET_FLAG(path->attr->nh_flags, BGP_ATTR_NH_MP_PREFER_GLOBAL);
SET_FLAG(path->attr->rmap_change_flags,
BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED);
} else {
path->attr->mp_nexthop_prefer_global = false;
UNSET_FLAG(path->attr->nh_flags, BGP_ATTR_NH_MP_PREFER_GLOBAL);
SET_FLAG(path->attr->rmap_change_flags,
BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED);
}

6
bgpd/bgp_snmp_bgp4v2.c
View File

@ -853,7 +853,8 @@ static uint8_t *bgp4v2PathAttrTable(struct variable *v, oid name[],
case BGP_ATTR_NHLEN_IPV6_GLOBAL:
return SNMP_INTEGER(2);
case BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL:
if (path->attr->mp_nexthop_prefer_global)
if (CHECK_FLAG(path->attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL))
return SNMP_INTEGER(2);
else
return SNMP_INTEGER(4);
@ -867,7 +868,8 @@ static uint8_t *bgp4v2PathAttrTable(struct variable *v, oid name[],
case BGP_ATTR_NHLEN_IPV6_GLOBAL:
return SNMP_IP6ADDRESS(path->attr->mp_nexthop_global);
case BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL:
if (path->attr->mp_nexthop_prefer_global)
if (CHECK_FLAG(path->attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL))
return SNMP_IP6ADDRESS(
path->attr->mp_nexthop_global);
else

3
bgpd/bgp_zebra.c
View File

@ -943,7 +943,8 @@ bgp_path_info_to_ipv6_nexthop(struct bgp_path_info *path, ifindex_t *ifindex)
|| path->attr->mp_nexthop_len
== BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL) {
/* Check if route-map is set to prefer global over link-local */
if (path->attr->mp_nexthop_prefer_global) {
if (CHECK_FLAG(path->attr->nh_flags,
BGP_ATTR_NH_MP_PREFER_GLOBAL)) {
nexthop = &path->attr->mp_nexthop_global;
if (IN6_IS_ADDR_LINKLOCAL(nexthop))
*ifindex = path->attr->nh_ifindex;