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| author | Job Snijders <job@instituut.net> | 2016-11-15 11:00:39 +0100 |
|---|---|---|
| committer | Donald Sharp <sharpd@cumulusnetworks.com> | 2017-01-19 00:38:53 +0100 |
| commit | 57d187bc77f5a07fab335cb0949f3f2e77fc7e6c (patch) | |
| tree | c52a54284756a6e29d5f5f0a2f9ee0a79f4e3080 /bgpd/bgp_mpath.c | |
| parent | Merge pull request #73 from opensourcerouting/ldpd-json (diff) | |
| download | frr-57d187bc77f5a07fab335cb0949f3f2e77fc7e6c.tar.xz frr-57d187bc77f5a07fab335cb0949f3f2e77fc7e6c.zip | |
Support for BGP Large Communities
BGP Large Communities are a novel way to signal information between
networks. An example of a Large Community is: "2914:65400:38016". Large
BGP Communities are composed of three 4-byte integers, separated by a
colon. This is easy to remember and accommodates advanced routing
policies in relation to 4-Byte ASNs.
This feature was developed by:
Keyur Patel <keyur@arrcus.com> (Arrcus, Inc.),
Job Snijders <job@ntt.net> (NTT Communications),
David Lamparter <equinox@opensourcerouting.org>
and Donald Sharp <sharpd@cumulusnetworks.com>
Signed-off-by: Job Snijders <job@ntt.net>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Diffstat (limited to 'bgpd/bgp_mpath.c')
| -rw-r--r-- | bgpd/bgp_mpath.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/bgpd/bgp_mpath.c b/bgpd/bgp_mpath.c index 1701c7044..f564ff169 100644 --- a/bgpd/bgp_mpath.c +++ b/bgpd/bgp_mpath.c @@ -38,6 +38,7 @@ #include "bgpd/bgp_aspath.h" #include "bgpd/bgp_community.h" #include "bgpd/bgp_ecommunity.h" +#include "bgpd/bgp_lcommunity.h" #include "bgpd/bgp_mpath.h" /* @@ -662,6 +663,7 @@ bgp_info_mpath_aggregate_update (struct bgp_info *new_best, u_char origin; struct community *community, *commerge; struct ecommunity *ecomm, *ecommerge; + struct lcommunity *lcomm, *lcommerge; struct attr_extra *ae; struct attr attr = { 0 }; @@ -698,6 +700,7 @@ bgp_info_mpath_aggregate_update (struct bgp_info *new_best, community = attr.community ? community_dup (attr.community) : NULL; ae = attr.extra; ecomm = (ae && ae->ecommunity) ? ecommunity_dup (ae->ecommunity) : NULL; + lcomm = (ae && ae->lcommunity) ? lcommunity_dup (ae->lcommunity) : NULL; for (mpinfo = bgp_info_mpath_first (new_best); mpinfo; mpinfo = bgp_info_mpath_next (mpinfo)) @@ -733,6 +736,17 @@ bgp_info_mpath_aggregate_update (struct bgp_info *new_best, else ecomm = ecommunity_dup (ae->ecommunity); } + if (ae && ae->lcommunity) + { + if (lcomm) + { + lcommerge = lcommunity_merge (lcomm, ae->lcommunity); + lcomm = lcommunity_uniq_sort (lcommerge); + lcommunity_free (&lcommerge); + } + else + lcomm = lcommunity_dup (ae->lcommunity); + } } attr.aspath = aspath; |