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Merge 2eeafae6b9 into 3dd4d417be

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Rajesh Varatharaj 2025-04-29 16:20:41 +00:00 committed by GitHub
parent 3dd4d417be 2eeafae6b9
commit da2315e37c
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GPG key ID: B5690EEEBB952194
2 changed files with 42 additions and 4 deletions
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4
pimd/pim_instance.h
View file

@ -62,7 +62,9 @@ enum pim_mlag_flags {
/* initial dump of data done post peerlink flap */
PIM_MLAGF_PEER_REPLAY_DONE = (1 << 3),
/* zebra is up on the peer */
PIM_MLAGF_PEER_ZEBRA_UP = (1 << 4)
PIM_MLAGF_PEER_ZEBRA_UP = (1 << 4),
/* Local MLAGD session is not up*/
PIM_MLAGF_PEER_ZEBRA_UP_NOTIFY_RECEIVE_PENDING = (1 << 5)
};
struct pim_router {

40
pimd/pim_mlag.c
View file

@ -552,6 +552,23 @@ static inline void pim_mlag_vxlan_state_update(void)
/********************API to process PIM MLAG Data ************************/
static void pim_mlag_peer_zebra_flag_set(void)
{
if (CHECK_FLAG(router->mlag_flags,
PIM_MLAGF_PEER_ZEBRA_UP_NOTIFY_RECEIVE_PENDING)) {
if (!(CHECK_FLAG(router->mlag_flags,
PIM_MLAGF_PEER_ZEBRA_UP))) {
if (PIM_DEBUG_MLAG)
zlog_debug(
"%s: update Mlag flag with PIM_MLAGF_PEER_ZEBRA_UP",
__func__);
SET_FLAG(router->mlag_flags, PIM_MLAGF_PEER_ZEBRA_UP);
UNSET_FLAG(
router->mlag_flags,
PIM_MLAGF_PEER_ZEBRA_UP_NOTIFY_RECEIVE_PENDING);
}
}
}
static void pim_mlag_process_mlagd_state_change(struct mlag_status msg)
{
@ -612,6 +629,7 @@ static void pim_mlag_process_mlagd_state_change(struct mlag_status msg)
router->connected_to_mlag = false;
}
pim_mlag_peer_zebra_flag_set();
/* apply the changes */
/* when connection to mlagd comes up we hold send mroutes till we have
* rxed the status and had a chance to re-valuate DF state
@ -620,7 +638,7 @@ static void pim_mlag_process_mlagd_state_change(struct mlag_status msg)
router->mlag_flags |= PIM_MLAGF_STATUS_RXED;
pim_mlag_vxlan_state_update();
/* on session up re-eval DF status */
pim_mlag_up_local_reeval(false /*mlagd_send*/, "mlagd_up");
pim_mlag_up_local_reeval(true /*mlagd_send*/, "mlagd_up");
/* replay all the upstream entries to the local MLAG daemon */
pim_mlag_up_local_replay();
return;
@ -657,8 +675,12 @@ static void pim_mlag_process_peer_frr_state_change(struct mlag_frr_status msg)
(msg.frr_state == MLAG_FRR_STATE_UP ? "UP" : "DOWN"));
if (!(router->mlag_flags & PIM_MLAGF_LOCAL_CONN_UP)) {
SET_FLAG(router->mlag_flags,
PIM_MLAGF_PEER_ZEBRA_UP_NOTIFY_RECEIVE_PENDING);
if (PIM_DEBUG_MLAG)
zlog_debug("%s: msg ignored mlagd process state down",
zlog_debug(
"%s: msg ignored mlagd process state down, \
Setting Local MLAG Pending flag",
__func__);
return;
}
@ -668,6 +690,10 @@ static void pim_mlag_process_peer_frr_state_change(struct mlag_frr_status msg)
if (msg.frr_state == MLAG_FRR_STATE_UP) {
if (!(router->mlag_flags & PIM_MLAGF_PEER_ZEBRA_UP)) {
router->mlag_flags |= PIM_MLAGF_PEER_ZEBRA_UP;
if (PIM_DEBUG_MLAG)
zlog_debug(
"%s:%d: Mlag Peer FRR state is UP Setting PIM_MLAGF_PEER_ZEBRA_UP mlag flag %0x",
__func__, __LINE__, router->mlag_flags);
/* XXX - when peer zebra comes up we need to wait for
* for some time to let the peer setup MDTs before
* before relinquishing DF status
@ -679,6 +705,10 @@ static void pim_mlag_process_peer_frr_state_change(struct mlag_frr_status msg)
if (router->mlag_flags & PIM_MLAGF_PEER_ZEBRA_UP) {
++router->mlag_stats.peer_zebra_downs;
router->mlag_flags &= ~PIM_MLAGF_PEER_ZEBRA_UP;
if (PIM_DEBUG_MLAG)
zlog_debug(
"%s:%d: Mlag Peer FRR state is DOWN unsetting PIM_MLAGF_PEER_ZEBRA_UP mlag flag %0x",
__func__, __LINE__, router->mlag_flags);
/* when a peer zebra goes down we assume DF role */
pim_mlag_up_local_reeval(true /*mlagd_send*/,
"zebra_down");
@ -881,6 +911,12 @@ int pim_zebra_mlag_process_up(ZAPI_CALLBACK_ARGS)
*/
router->connected_to_mlag = true;
router->mlag_flags |= PIM_MLAGF_LOCAL_CONN_UP;
/*
* Handle when local mlag session comes up later,
* Update the Peer Zebra status once the local MLAG connection is
* restored based on peer connection status.
*/
pim_mlag_peer_zebra_flag_set();
return 0;
}