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authorNeale Ranns <neale@graphiant.com>2021-08-13 08:10:59 +0000
committerNeale Ranns <neale@graphiant.com>2021-09-13 08:36:08 +0000
commitea8adf76375389e4c46c1a2eb903743142e44a8d (patch)
treef11a5664938575cf934e4369ae14984966ab8c7e /src/vnet/ip-neighbor
parentcba87100f1dd6d8b07eab7d9914bb80d469b982f (diff)
ip-neighbor: Handle local MAC address change for incomplete adjacencies
Type: fix When the local MAC address of an interface changes the rewrite strings of all adjacency types need to be updated - this patch fixes the missing case of incomplete adjacencies. I moved the update of all adj types into the adj module, since if the complete adjs were done by the ip-neighbour module and incomplete ones by adj module, that would mean two walks of the adj DB, as it is not possible to walk only a specific type. UT is updated to include the missing case. Signed-off-by: Neale Ranns <neale@graphiant.com> Signed-off-by: Ivan Shvedunov <ivan4th@gmail.com> Change-Id: I36af94976c645bdd0d4d3bc0093b24d7d077e9d7
Diffstat (limited to 'src/vnet/ip-neighbor')
-rw-r--r--src/vnet/ip-neighbor/ip_neighbor.c40
1 files changed, 6 insertions, 34 deletions
diff --git a/src/vnet/ip-neighbor/ip_neighbor.c b/src/vnet/ip-neighbor/ip_neighbor.c
index 8637e16fd8e..6c97356dd98 100644
--- a/src/vnet/ip-neighbor/ip_neighbor.c
+++ b/src/vnet/ip-neighbor/ip_neighbor.c
@@ -692,13 +692,18 @@ ip_neighbor_update (vnet_main_t * vnm, adj_index_t ai)
ip_neighbor_probe (adj);
}
break;
+ case IP_LOOKUP_NEXT_REWRITE:
+ /* Update of an existing rewrite adjacency happens e.g. when the
+ * interface's MAC address changes */
+ if (NULL != ipn)
+ ip_neighbor_mk_complete (ai, ipn);
+ break;
case IP_LOOKUP_NEXT_GLEAN:
case IP_LOOKUP_NEXT_BCAST:
case IP_LOOKUP_NEXT_MCAST:
case IP_LOOKUP_NEXT_DROP:
case IP_LOOKUP_NEXT_PUNT:
case IP_LOOKUP_NEXT_LOCAL:
- case IP_LOOKUP_NEXT_REWRITE:
case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
case IP_LOOKUP_NEXT_MIDCHAIN:
case IP_LOOKUP_NEXT_ICMP_ERROR:
@@ -1142,31 +1147,6 @@ ip6_neighbor_proxy_del (u32 sw_if_index, const ip6_address_t * addr)
return -1;
}
-static void
-ip_neighbor_ethernet_change_mac (ethernet_main_t * em,
- u32 sw_if_index, uword opaque)
-{
- ip_neighbor_t *ipn;
-
- IP_NEIGHBOR_DBG ("mac-change: %U",
- format_vnet_sw_if_index_name, vnet_get_main (),
- sw_if_index);
-
- /* *INDENT-OFF* */
- pool_foreach (ipn, ip_neighbor_pool)
- {
- if (ipn->ipn_key->ipnk_sw_if_index == sw_if_index)
- adj_nbr_walk_nh (ipn->ipn_key->ipnk_sw_if_index,
- ip_address_family_to_fib_proto(ip_neighbor_get_af(ipn)),
- &ip_addr_46(&ipn->ipn_key->ipnk_ip),
- ip_neighbor_mk_complete_walk,
- ipn);
- }
- /* *INDENT-ON* */
-
- adj_glean_update_rewrite_itf (sw_if_index);
-}
-
void
ip_neighbor_populate (ip_address_family_t af, u32 sw_if_index)
{
@@ -1806,14 +1786,6 @@ ip_neighbor_init (vlib_main_t * vm)
};
vec_add1 (ip6_main.table_bind_callbacks, cb);
}
- {
- ethernet_address_change_ctx_t ctx = {
- .function = ip_neighbor_ethernet_change_mac,
- .function_opaque = 0,
- };
- vec_add1 (ethernet_main.address_change_callbacks, ctx);
- }
-
ipn_logger = vlib_log_register_class ("ip", "neighbor");
ip_address_family_t af;