From: Donald Sharp <sharpd@cumulusnetworks.com>
Date: Fri, 21 Sep 2018 14:28:57 +0000 (-0400)
Subject: pimd: Add a debug to tell why we are not creating upsteam state
X-Git-Tag: frr-7.1-dev~345^2~1
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=90a084e4a1bbffc2de9a1192fdc3ab30c58a1b80;p=mirror%2Ffrr.git

pimd: Add a debug to tell why we are not creating upsteam state

When we decide we are not the right pim process to add upstream state
for the igmp state received, notice this in a debug to make life
easier to debug.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
---

diff --git a/pimd/pim_zebra.c b/pimd/pim_zebra.c
index 4fa4ea857f..4ff9bd6bdc 100644
--- a/pimd/pim_zebra.c
+++ b/pimd/pim_zebra.c
@@ -1044,9 +1044,14 @@ void igmp_source_forward_start(struct pim_instance *pim,
 		return;
 	}
 
-	if (!(PIM_I_am_DR(pim_oif)))
+	if (!(PIM_I_am_DR(pim_oif))) {
+		if (PIM_DEBUG_IGMP_TRACE)
+			zlog_debug("%s: %s was received on %s interface but we are not DR for that interface",
+				   __PRETTY_FUNCTION__,
+				   pim_str_sg_dump(&sg),
+				   group->group_igmp_sock->interface->name);
 		return;
-
+	}
 	/*
 	  Feed IGMPv3-gathered local membership information into PIM
 	  per-interface (S,G) state.