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| author | Mitesh Kanjariya <mitesh@marvel-07.cumulusnetworks.com> | 2018-02-06 23:28:22 +0100 |
|---|---|---|
| committer | mitesh <mitesh@cumulusnetworks.com> | 2018-02-10 09:41:28 +0100 |
| commit | c48d9f5f8545c4af3e4a2a4a58999cf62b705486 (patch) | |
| tree | db3bf4399ce3d43fd80f7e498d74073502803235 /bgpd/bgp_evpn_private.h | |
| parent | Merge pull request #1737 from mkanjari/build-failure (diff) | |
| download | frr-c48d9f5f8545c4af3e4a2a4a58999cf62b705486.tar.xz frr-c48d9f5f8545c4af3e4a2a4a58999cf62b705486.zip | |
zebra, bgp: Support type-5 routes with asymmetric routing
Asymmetric routing is an ideal choice when all VLANs are cfged on all leafs.
It simplifies the routing configuration and
eliminates potential need for advertising subnet routes.
However, we need to reach the Internet or global destinations
or to do subnet-based routing between PODs or DCs.
This requires EVPN type-5 routes but those routes require L3 VNI configuration.
This task is to support EVPN type-5 routes for prefix-based routing in
conjunction with asymmetric routing within the POD/DC.
It is done by providing an option to use the L3 VNI only for prefix routes,
so that type-2 routes (host routes) will only use the L2 VNI.
Signed-off-by: Mitesh Kanjariya <mitesh@cumulusnetworks.com>
Diffstat (limited to 'bgpd/bgp_evpn_private.h')
| -rw-r--r-- | bgpd/bgp_evpn_private.h | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/bgpd/bgp_evpn_private.h b/bgpd/bgp_evpn_private.h index cc0ec8234..1dbc1f25f 100644 --- a/bgpd/bgp_evpn_private.h +++ b/bgpd/bgp_evpn_private.h @@ -61,6 +61,8 @@ struct bgpevpn { #define VNI_FLAG_RD_CFGD 0x4 /* RD is user configured. */ #define VNI_FLAG_IMPRT_CFGD 0x8 /* Import RT is user configured */ #define VNI_FLAG_EXPRT_CFGD 0x10 /* Export RT is user configured */ +#define VNI_FLAG_USE_TWO_LABELS 0x20 /* Attach both L2-VNI and L3-VNI if + needed for this VPN */ /* Flag to indicate if we are advertising the g/w mac ip for this VNI*/ u_int8_t advertise_gw_macip; @@ -179,9 +181,13 @@ static inline void bgpevpn_unlink_from_l3vni(struct bgpevpn *vpn) struct bgp *bgp_vrf = NULL; bgp_vrf = bgp_lookup_by_vrf_id(vpn->tenant_vrf_id); - if (!bgp_vrf || !bgp_vrf->l2vnis) + if (!bgp_vrf) return; - listnode_delete(bgp_vrf->l2vnis, vpn); + + UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); + + if (bgp_vrf->l2vnis) + listnode_delete(bgp_vrf->l2vnis, vpn); } static inline void bgpevpn_link_to_l3vni(struct bgpevpn *vpn) @@ -189,9 +195,16 @@ static inline void bgpevpn_link_to_l3vni(struct bgpevpn *vpn) struct bgp *bgp_vrf = NULL; bgp_vrf = bgp_lookup_by_vrf_id(vpn->tenant_vrf_id); - if (!bgp_vrf || !bgp_vrf->l2vnis) + if (!bgp_vrf) return; - listnode_add_sort(bgp_vrf->l2vnis, vpn); + + /* check if we are advertising two labels for this vpn */ + if (!CHECK_FLAG(bgp_vrf->vrf_flags, + BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) + SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); + + if (bgp_vrf->l2vnis) + listnode_add_sort(bgp_vrf->l2vnis, vpn); } static inline int is_vni_configured(struct bgpevpn *vpn) |