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authorNeale Ranns <nranns@cisco.com>2017-12-13 01:44:25 -0800
committerFlorin Coras <florin.coras@gmail.com>2017-12-13 21:53:11 +0000
commitcf3561bde53173a7be9aa02ed4897c7f2d55bd0a (patch)
treed299339b27fa848210b3098d3f8b81f1a7b3146b /src/vnet/ip
parent7e665d64eb172f8ff42009a0d412ad05ffae7432 (diff)
IP bi-direction multicast - same cable check on egress
Change-Id: I655382f7f74181dd7c795a2b22f151f76b50e793 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ip')
-rw-r--r--src/vnet/ip/ip4_error.h1
-rwxr-xr-xsrc/vnet/ip/ip4_forward.c17
2 files changed, 17 insertions, 1 deletions
diff --git a/src/vnet/ip/ip4_error.h b/src/vnet/ip/ip4_error.h
index d2775636539..d9b56bc2f49 100644
--- a/src/vnet/ip/ip4_error.h
+++ b/src/vnet/ip/ip4_error.h
@@ -59,6 +59,7 @@
_ (SRC_LOOKUP_MISS, "ip4 source lookup miss") \
_ (DROP, "ip4 drop") \
_ (PUNT, "ip4 punt") \
+ _ (SAME_INTERFACE, "ip4 egrees interface same as ingress") \
\
/* Errors signalled by ip4-local. */ \
_ (UNKNOWN_PROTOCOL, "unknown ip protocol") \
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index c7cf362a3c0..2f3f340264f 100755
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -2477,6 +2477,16 @@ ip4_rewrite_inline (vlib_main_t * vm,
rewrite_header.max_l3_packet_bytes ? IP4_ERROR_MTU_EXCEEDED :
error1);
+ if (is_mcast)
+ {
+ error0 = ((adj0[0].rewrite_header.sw_if_index ==
+ vnet_buffer (p0)->sw_if_index[VLIB_RX]) ?
+ IP4_ERROR_SAME_INTERFACE : error0);
+ error1 = ((adj1[0].rewrite_header.sw_if_index ==
+ vnet_buffer (p1)->sw_if_index[VLIB_RX]) ?
+ IP4_ERROR_SAME_INTERFACE : error1);
+ }
+
/* Don't adjust the buffer for ttl issue; icmp-error node wants
* to see the IP headerr */
if (PREDICT_TRUE (error0 == IP4_ERROR_NONE))
@@ -2636,7 +2646,12 @@ ip4_rewrite_inline (vlib_main_t * vm,
error0 = (vlib_buffer_length_in_chain (vm, p0)
> adj0[0].rewrite_header.max_l3_packet_bytes
? IP4_ERROR_MTU_EXCEEDED : error0);
-
+ if (is_mcast)
+ {
+ error0 = ((adj0[0].rewrite_header.sw_if_index ==
+ vnet_buffer (p0)->sw_if_index[VLIB_RX]) ?
+ IP4_ERROR_SAME_INTERFACE : error0);
+ }
p0->error = error_node->errors[error0];
/* Don't adjust the buffer for ttl issue; icmp-error node wants