diff options
Diffstat (limited to 'pimd/pim_upstream.h')
| -rw-r--r-- | pimd/pim_upstream.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/pimd/pim_upstream.h b/pimd/pim_upstream.h index f44b95c811..70e70140d1 100644 --- a/pimd/pim_upstream.h +++ b/pimd/pim_upstream.h @@ -88,10 +88,30 @@ enum pim_upstream_sptbit { /* Upstream (S,G) channel in Joined state - (S,G) in the "Not Joined" state is not represented - See RFC 4601: 4.5.7. Sending (S,G) Join/Prune Message + + upstream_addr : Who we are talking to. + For (*, G), upstream_addr is RP address or INADDR_ANY(if RP not configured) + For (S, G), upstream_addr is source address + + rpf: contains the nexthop information to whom we are talking to. + + join_state: JOINED/NOTJOINED + + In the case when FRR receives IGMP/PIM (*, G) join for group G and RP is not + configured, then create a pim_upstream with the below information. + pim_upstream->upstream address: INADDR_ANY + pim_upstream->rpf: Unknown + pim_upstream->state: NOTJOINED + + When a new RP gets configured for G, find the corresponding pim upstream (*,G) + entries and update the upstream address as new RP address if it the better one + for the group G. + + When RP becomes reachable, populate the nexthop information in + pim_upstream->rpf and update the state to JOINED. + */ struct pim_upstream { struct pim_upstream *parent; |