From: Stanislav Zaikin <stanislav.zaikin@46labs.com>
Date: Fri, 4 Oct 2024 15:43:37 +0000 (+0200)
Subject: linux-cp: do ip6-ll cleanup on interface removal
X-Git-Tag: v25.10-rc0~48
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=f20e84d52cf335e93075a5152b6bf27da1ca4ff9;p=vpp.git

linux-cp: do ip6-ll cleanup on interface removal

run a cleanup of ip6 mfib w/o depending on receiving a corresponding
netlink message

Type: fix

Change-Id: I98d5dbbbbb7a56d3ee6f5882b5d6465148049309
Signed-off-by: Stanislav Zaikin <stanislav.zaikin@46labs.com>
---

diff --git a/src/plugins/linux-cp/lcp_router.c b/src/plugins/linux-cp/lcp_router.c
index 0efd53e64ef..27f53357a4d 100644
--- a/src/plugins/linux-cp/lcp_router.c
+++ b/src/plugins/linux-cp/lcp_router.c
@@ -17,7 +17,6 @@
 #include <linux/if.h>
 #include <linux/mpls.h>
 
-//#include <vlib/vlib.h>
 #include <vlib/unix/plugin.h>
 #include <linux-cp/lcp_nl.h>
 #include <linux-cp/lcp_interface.h>
@@ -1543,6 +1542,12 @@ const nl_vft_t lcp_router_vft = {
 			     .cb = lcp_router_route_sync_end },
 };
 
+static void
+lcp_lcp_router_interface_del_cb (lcp_itf_pair_t *lip)
+{
+  lcp_router_ip6_mroutes_add_del (lip->lip_phy_sw_if_index, 0);
+}
+
 static clib_error_t *
 lcp_router_init (vlib_main_t *vm)
 {
@@ -1550,6 +1555,12 @@ lcp_router_init (vlib_main_t *vm)
 
   nl_register_vft (&lcp_router_vft);
 
+  lcp_itf_pair_vft_t lcp_router_interface_del_vft = {
+    .pair_del_fn = lcp_lcp_router_interface_del_cb,
+  };
+
+  lcp_itf_pair_register_vft (&lcp_router_interface_del_vft);
+
   /*
    * allocate 2 route sources. The low priority source will be for
    * dynamic routes. If a dynamic route daemon (FRR) tries to remove its