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authorMatthew Smith <mgsmith@netgate.com>2021-10-11 14:10:15 -0500
committerNeale Ranns <neale@graphiant.com>2021-10-21 15:08:03 +0000
commitaf50b4f727f6d9d85c722c39b459941e01a34217 (patch)
tree361c0c73482728a820412d38eeb9822e81ff7848
parent1dff6b3485ffac976d3b49b5daaf7ad687d103f8 (diff)
ip6: set local flag on outbound echo reply
Type: fix When VPP generates an ICMP echo reply in response to an incoming echo request to a local address, set VNET_BUFFER_F_LOCALLY_ORIGINATED on the buffer. It will prevent ip6-rewrite from decrementing the hop limit. Outbound IPv4 echo replies also get this flag set. Change-Id: Iaa229294eb158edb58cf1bf1b7a90da281321406 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
-rw-r--r--src/vnet/ip/icmp6.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/vnet/ip/icmp6.c b/src/vnet/ip/icmp6.c
index b6ed3ea0ec9..b0fdadb2667 100644
--- a/src/vnet/ip/icmp6.c
+++ b/src/vnet/ip/icmp6.c
@@ -351,6 +351,9 @@ ip6_icmp_echo_request (vlib_main_t * vm,
vnet_buffer (p1)->sw_if_index[VLIB_RX]);
vnet_buffer (p1)->sw_if_index[VLIB_TX] = fib_index1;
+ p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+ p1->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+
/* verify speculative enqueues, maybe switch current next frame */
/* if next0==next1==next_index then nothing special needs to be done */
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
@@ -404,6 +407,7 @@ ip6_icmp_echo_request (vlib_main_t * vm,
vnet_buffer (p0)->sw_if_index[VLIB_RX]);
vnet_buffer (p0)->sw_if_index[VLIB_TX] = fib_index0;
+ p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
/* Verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next,