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authorStanislav Zaikin <zstaseg@gmail.com>2022-05-10 20:50:36 +0200
committerJohn Lo <lojultra2020@outlook.com>2022-08-30 18:37:20 +0000
commit7dc351f6895d94eaee1fd04672368cc425e14103 (patch)
tree36d860e467e9b9ea081eb36a85f654d127db57f7 /src
parentc37ce790763fac7ce890a28120db3b16425b1ceb (diff)
l2: skip arp term for locally originated packets
Mark arp packet as locally originated when probing/replying and don't apply any arp-term logic against it. Type: fix Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com> Change-Id: I305ff5cac8cac456decf92f21b961aa4ce286079
Diffstat (limited to 'src')
-rw-r--r--src/vnet/arp/arp_packet.h2
-rw-r--r--src/vnet/ip-neighbor/ip4_neighbor.h1
-rw-r--r--src/vnet/l2/l2_arp_term.c3
3 files changed, 6 insertions, 0 deletions
diff --git a/src/vnet/arp/arp_packet.h b/src/vnet/arp/arp_packet.h
index a860c258f75..66ab384a33e 100644
--- a/src/vnet/arp/arp_packet.h
+++ b/src/vnet/arp/arp_packet.h
@@ -68,6 +68,8 @@ arp_mk_reply (vnet_main_t * vnm,
clib_mem_unaligned (&arp0->ip4_over_ethernet[0].ip4.data_u32, u32) =
if_addr0->data_u32;
+ p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+
/* Hardware must be ethernet-like. */
ASSERT (vec_len (hw_if0->hw_address) == 6);
diff --git a/src/vnet/ip-neighbor/ip4_neighbor.h b/src/vnet/ip-neighbor/ip4_neighbor.h
index 8ace8d1a2d0..7941ebdbced 100644
--- a/src/vnet/ip-neighbor/ip4_neighbor.h
+++ b/src/vnet/ip-neighbor/ip4_neighbor.h
@@ -61,6 +61,7 @@ ip4_neighbor_probe (vlib_main_t *vm, vnet_main_t *vnm,
h0->ip4_over_ethernet[1].ip4 = *dst;
vnet_buffer (b0)->sw_if_index[VLIB_TX] = adj0->rewrite_header.sw_if_index;
+ b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
vlib_buffer_advance (b0, -adj0->rewrite_header.data_bytes);
diff --git a/src/vnet/l2/l2_arp_term.c b/src/vnet/l2/l2_arp_term.c
index d0734328759..594ee8e3622 100644
--- a/src/vnet/l2/l2_arp_term.c
+++ b/src/vnet/l2/l2_arp_term.c
@@ -290,6 +290,9 @@ arp_term_l2bd (vlib_main_t * vm,
ethertype0 = clib_net_to_host_u16 (*(u16 *) (l3h0 - 2));
arp0 = (ethernet_arp_header_t *) l3h0;
+ if (p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+ goto next_l2_feature;
+
if (ethertype0 != ETHERNET_TYPE_ARP)
goto check_ip6_nd;