Mailing List Archive

From: Julien Courtat <julien.courtat@6wind.com>

On VRF creation, an additionnal parameter layer type can be provided to
distinguish between layer 2 and layer 3 vrf. layer 2 is used by EVPN
when dealing with MAC/IP route advertisement. layer 3 is used by any
other route L3VPN or EVPN route advertisement.

Signed-off-by: Julien Courtat <julien.courtat@6wind.com>
---
bgpd/bgp_vty.c | 20 ++++++++++++++++++--
bgpd/bgpd.c | 13 ++++++++++---
bgpd/bgpd.h | 11 ++++++++++-
3 files changed, 38 insertions(+), 6 deletions(-)

diff --git a/bgpd/bgp_vty.c b/bgpd/bgp_vty.c
index ea00149ba0a1..a0d37d1a9d69 100644
--- a/bgpd/bgp_vty.c
+++ b/bgpd/bgp_vty.c
@@ -9947,15 +9947,17 @@ bgp_config_write_redistribute (struct vty *vty, struct bgp *bgp, afi_t afi,

DEFUN (bgp_vrf,
bgp_vrf_cmd,
- "vrf rd WORD",
+ "vrf rd WORD [LAYER]",
"BGP VPN VRF\n"
"Route Distinguisher\n"
"Route Distinguisher\n"
+ "Layer type: layer_2 or layer_3\n"
)
{
struct bgp *bgp = vty->index;
struct bgp_vrf *vrf;
struct prefix_rd prd;
+ bgp_layer_type_t ltype = BGP_LAYER_TYPE_3;

if (! str2prefix_rd (argv[0], &prd))
{
@@ -9963,6 +9965,20 @@ DEFUN (bgp_vrf,
return CMD_WARNING;
}

+ if (argc == 2)
+ {
+ if (!strncmp(argv[1], "layer_2", 7))
+ ltype = BGP_LAYER_TYPE_2;
+ else
+ if (!strncmp(argv[1], "layer_3", 7))
+ ltype = BGP_LAYER_TYPE_3;
+ else
+ {
+ vty_out (vty, "%% VRF with layer type '%s' not supported%s", argv[1], VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ }
+
vrf = bgp_vrf_lookup (bgp, &prd);
if (vrf)
{
@@ -9970,7 +9986,7 @@ DEFUN (bgp_vrf,
return CMD_WARNING;
}

- bgp_vrf_create (bgp, &prd);
+ bgp_vrf_create (bgp, ltype, &prd);
return CMD_SUCCESS;
}

diff --git a/bgpd/bgpd.c b/bgpd/bgpd.c
index 2833b6e8751f..82d077c03876 100644
--- a/bgpd/bgpd.c
+++ b/bgpd/bgpd.c
@@ -2123,7 +2123,7 @@ bgp_vrf_lookup (struct bgp *bgp, struct prefix_rd *outbound_rd)
}

struct bgp_vrf *
-bgp_vrf_create (struct bgp *bgp, struct prefix_rd *outbound_rd)
+bgp_vrf_create (struct bgp *bgp, bgp_layer_type_t ltype, struct prefix_rd *outbound_rd)
{
struct bgp_vrf *vrf;
afi_t afi;
@@ -2132,8 +2132,13 @@ bgp_vrf_create (struct bgp *bgp, struct prefix_rd *outbound_rd)
return NULL;

vrf->bgp = bgp;
+ vrf->ltype = ltype;
vrf->outbound_rd = *outbound_rd;
- vrf->max_mpath = bgp->maxpaths[AFI_IP][SAFI_MPLS_VPN].maxpaths_ibgp;
+
+ if (ltype == BGP_LAYER_TYPE_2)
+ vrf->max_mpath = bgp->maxpaths[AFI_INTERNAL_L2VPN][SAFI_INTERNAL_EVPN].maxpaths_ibgp;
+ else
+ vrf->max_mpath = bgp->maxpaths[AFI_IP][SAFI_MPLS_VPN].maxpaths_ibgp;

for (afi = AFI_IP; afi < AFI_MAX; afi++)
{
@@ -5818,7 +5823,9 @@ bgp_config_write (struct vty *vty)
for (ALL_LIST_ELEMENTS_RO(bgp->vrfs, node, vrf))
{
str_p = prefix_rd2str(&(vrf->outbound_rd), rdstr, RD_ADDRSTRLEN);
- vty_out(vty, " vrf rd %s%s", str_p == NULL?"<err>":str_p, VTY_NEWLINE);
+ vty_out(vty, " vrf rd %s%s%s", str_p == NULL?"<err>":str_p,
+ vrf->ltype == BGP_LAYER_TYPE_2 ? " layer_2": "",
+ VTY_NEWLINE);
if(vrf->rt_import)
{
str2_p = ecommunity_ecom2str (vrf->rt_import,
diff --git a/bgpd/bgpd.h b/bgpd/bgpd.h
index 505c1389a087..15a4aaaf16d8 100644
--- a/bgpd/bgpd.h
+++ b/bgpd/bgpd.h
@@ -208,10 +208,19 @@ struct bgp_rt_sub
struct list *vrfs;
};

+typedef enum
+{
+ BGP_LAYER_TYPE_2 = 1,
+ BGP_LAYER_TYPE_3 = 2,
+} bgp_layer_type_t;
+
struct bgp_vrf
{
struct bgp *bgp;

+ /* TYPE2 for EVPN MAC/IP routes, TYPE3 for others */
+ bgp_layer_type_t ltype;
+
/* RD used for route advertisements */
struct prefix_rd outbound_rd;

@@ -1040,7 +1049,7 @@ extern int peer_ttl_security_hops_set (struct peer *, int);
extern int peer_ttl_security_hops_unset (struct peer *);

extern void bgp_scan_finish (void);
-extern struct bgp_vrf *bgp_vrf_create (struct bgp *bgp, struct prefix_rd *outbound_rd);
+extern struct bgp_vrf *bgp_vrf_create (struct bgp *bgp, bgp_layer_type_t ltype, struct prefix_rd *outbound_rd);
extern struct bgp_vrf *bgp_vrf_lookup (struct bgp *bgp, struct prefix_rd *outbound_rd);
extern struct bgp_vrf *bgp_vrf_lookup_per_rn (struct bgp *bgp, int afi, struct bgp_node *vrf_rn);
extern void bgp_vrf_delete (struct bgp_vrf *vrf);
--
2.1.4


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