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bgpd: update type-5 routes when RD changes

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when router-id/RD changes for a bgp vrf instance,
we need to update all type-5 routes.

Signed-off-by: Mitesh Kanjariya <mitesh@cumulusnetworks.com>
This commit is contained in:
Mitesh Kanjariya 2017-11-02 02:15:14 -07:00
parent 342dd0c623
commit 80b140af22
1 changed files with 41 additions and 6 deletions
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47
bgpd/bgp_evpn.c
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@ -2437,15 +2437,45 @@ static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi,
return 0;
}
/* delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5
* routes */
static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf)
{
/* delete all ipv4 routes and withdraw from peers */
bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP);
/* delete all ipv6 routes and withdraw from peers */
bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6);
}
/* update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5
* routes */
static void update_advertise_vrf_routes(struct bgp *bgp_vrf)
{
/* update all ipv4 routes */
bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP);
/* update all ipv6 routes */
bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6);
}
/*
* update and advertise local routes for a VRF as type-5 routes.
* This is invoked upon RD change for a VRF. Note taht the processing is only
* done in the global route table using the routes which already exist in the
* VRF routing table
*/
static int update_advertise_vrf_routes(struct bgp *bgp_vrf)
static void update_router_id_vrf(struct bgp *bgp_vrf)
{
return 0;
/* skip if the RD is configured */
if (is_vrf_rd_configured(bgp_vrf))
return;
/* derive the RD for the VRF based on new router-id */
bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf);
/* update advertise ipv4|ipv6 routes as type-5 routes */
update_advertise_vrf_routes(bgp_vrf);
}
/*
@ -2453,9 +2483,14 @@ static int update_advertise_vrf_routes(struct bgp *bgp_vrf)
* This is invoked upon VRF RD change. The processing is done only from global
* table.
*/
static int delete_withdraw_vrf_routes(struct bgp *bgp_vrf)
static void withdraw_router_id_vrf(struct bgp *bgp_vrf)
{
return 0;
/* skip if the RD is configured */
if (is_vrf_rd_configured(bgp_vrf))
return;
/* delete/withdraw ipv4|ipv6 routes as type-5 routes */
delete_withdraw_vrf_routes(bgp_vrf);
}
/*
@ -3200,7 +3235,7 @@ void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw)
/* delete and withdraw all the type-5 routes
stored in the global table for this vrf */
delete_withdraw_vrf_routes(bgp);
withdraw_router_id_vrf(bgp);
/* delete all the VNI routes (type-2/type-3) routes for all the
* L2-VNIs */
@ -3212,7 +3247,7 @@ void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw)
/* advertise all routes in the vrf as type-5 routes with the new
* RD */
update_advertise_vrf_routes(bgp);
update_router_id_vrf(bgp);
/* advertise all the VNI routes (type-2/type-3) routes with the
* new RD*/