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Merge pull request #8643 from icosahedral/master

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bgpd: modify path selection for EVPN type-5 routes
This commit is contained in:
Sri Mohana Singamsetty 2021-05-17 11:43:35 -07:00 committed by GitHub
commit ea9aa70547
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 4 deletions
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12
bgpd/bgp_route.c
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@ -550,6 +550,7 @@ static int bgp_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new,
char *pfx_buf, afi_t afi, safi_t safi,
enum bgp_path_selection_reason *reason)
{
const struct prefix *new_p;
struct attr *newattr, *existattr;
bgp_peer_sort_t new_sort;
bgp_peer_sort_t exist_sort;
@ -614,10 +615,13 @@ static int bgp_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new,
newattr = new->attr;
existattr = exist->attr;
new_p = bgp_dest_get_prefix(new->net);
/* For EVPN routes, we cannot just go by local vs remote, we have to
* look at the MAC mobility sequence number, if present.
*/
if (safi == SAFI_EVPN) {
if ((safi == SAFI_EVPN)
&& (new_p->u.prefix_evpn.route_type == BGP_EVPN_MAC_IP_ROUTE)) {
/* This is an error condition described in RFC 7432 Section
* 15.2. The RFC
* states that in this scenario "the PE MUST alert the operator"
@ -630,9 +634,9 @@ static int bgp_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new,
*/
if (newattr->sticky != existattr->sticky) {
if (!debug) {
prefix2str(
bgp_dest_get_prefix(new->net), pfx_buf,
sizeof(*pfx_buf) * PREFIX2STR_BUFFER);
prefix2str(new_p, pfx_buf,
sizeof(*pfx_buf)
* PREFIX2STR_BUFFER);
bgp_path_info_path_with_addpath_rx_str(
new, new_buf, sizeof(new_buf));
bgp_path_info_path_with_addpath_rx_str(