diff options
| author | Don Slice <dslice@cumulusnetworks.com> | 2017-02-02 12:58:33 -0500 |
|---|---|---|
| committer | Donald Sharp <sharpd@cumulusnetworks.com> | 2017-04-06 10:29:19 -0400 |
| commit | a64448baa6150a7431d55e0e65d0b51d62c4b5be (patch) | |
| tree | adb195d3f8e26c4ae893f85fb1020e1d55d73241 /lib/zclient.c | |
| parent | cceb79ac9b05c2f5d3e4a74b9cd11e908ea634ec (diff) | |
zebra: labeled unicast handling
Support install of labeled-unicast routes by a client. This would be
BGP, in order to install routes corresponding to AFI/SAFI 1/4 (IPv4)
or 2/4 (IPv6). Convert labeled-unicast routes into label forwarding
entries (i.e., transit LSPs) when there is a static label binding.
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
Diffstat (limited to 'lib/zclient.c')
| -rw-r--r-- | lib/zclient.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/lib/zclient.c b/lib/zclient.c index 9e53b66c77..541a5444cf 100644 --- a/lib/zclient.c +++ b/lib/zclient.c @@ -733,6 +733,18 @@ zapi_ipv4_route (u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p, s = zclient->obuf; stream_reset (s); + /* Some checks for labeled-unicast. The current expectation is that each + * nexthop is accompanied by a label in the case of labeled-unicast. + */ + if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL) && + CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) + { + /* We expect prefixes installed with labels and the number to match + * the number of nexthops. + */ + assert (api->label_num == api->nexthop_num); + } + zclient_create_header (s, cmd, api->vrf_id); /* Put type and nexthop. */ @@ -749,7 +761,7 @@ zapi_ipv4_route (u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p, /* Nexthop, ifindex, distance and metric information. */ if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) - { + { /* traditional 32-bit data units */ if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE)) { @@ -765,6 +777,9 @@ zapi_ipv4_route (u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p, { stream_putc (s, NEXTHOP_TYPE_IPV4); stream_put_in_addr (s, api->nexthop[i]); + /* For labeled-unicast, each nexthop is followed by label. */ + if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL)) + stream_putl (s, api->label[i]); } for (i = 0; i < api->ifindex_num; i++) { @@ -800,6 +815,18 @@ zapi_ipv4_route_ipv6_nexthop (u_char cmd, struct zclient *zclient, s = zclient->obuf; stream_reset (s); + /* Some checks for labeled-unicast. The current expectation is that each + * nexthop is accompanied by a label in the case of labeled-unicast. + */ + if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL) && + CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) + { + /* We expect prefixes installed with labels and the number to match + * the number of nexthops. + */ + assert (api->label_num == api->nexthop_num); + } + zclient_create_header (s, cmd, api->vrf_id); /* Put type and nexthop. */ @@ -831,6 +858,9 @@ zapi_ipv4_route_ipv6_nexthop (u_char cmd, struct zclient *zclient, { stream_putc (s, NEXTHOP_TYPE_IPV6); stream_write (s, (u_char *)api->nexthop[i], 16); + /* For labeled-unicast, each nexthop is followed by label. */ + if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL)) + stream_putl (s, api->label[i]); } for (i = 0; i < api->ifindex_num; i++) { @@ -869,6 +899,18 @@ zapi_ipv6_route (u_char cmd, struct zclient *zclient, struct prefix_ipv6 *p, s = zclient->obuf; stream_reset (s); + /* Some checks for labeled-unicast. The current expectation is that each + * nexthop is accompanied by a label in the case of labeled-unicast. + */ + if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL) && + CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) + { + /* We expect prefixes installed with labels and the number to match + * the number of nexthops. + */ + assert (api->label_num == api->nexthop_num); + } + zclient_create_header (s, cmd, api->vrf_id); /* Put type and nexthop. */ @@ -907,6 +949,9 @@ zapi_ipv6_route (u_char cmd, struct zclient *zclient, struct prefix_ipv6 *p, { stream_putc (s, NEXTHOP_TYPE_IPV6); stream_write (s, (u_char *)api->nexthop[i], 16); + /* For labeled-unicast, each nexthop is followed by label. */ + if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL)) + stream_putl (s, api->label[i]); } for (i = 0; i < api->ifindex_num; i++) { |