From: Florin Coras <fcoras@cisco.com>
Date: Tue, 23 Jan 2024 17:40:45 +0000 (-0800)
Subject: udp: update rx sw_if_index to ip-local selected one
X-Git-Tag: v24.10-rc0~284
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=f1acfc00ee6643b7a55af3a1267365a97eec63ca;p=vpp.git

udp: update rx sw_if_index to ip-local selected one

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I0afd1b9ddbc17825aab3bfa3e5f9c6c0fbc561ca
---

diff --git a/src/vnet/udp/udp_input.c b/src/vnet/udp/udp_input.c
index 9cabfdf73cd..f1dcab8116f 100644
--- a/src/vnet/udp/udp_input.c
+++ b/src/vnet/udp/udp_input.c
@@ -224,6 +224,10 @@ udp_parse_and_lookup_buffer (vlib_buffer_t * b, session_dgram_hdr_t * hdr,
 				udp->src_port, TRANSPORT_PROTO_UDP);
     }
 
+  /* Set the sw_if_index[VLIB_RX] to the interface we received
+   * the connection on (the local interface) */
+  vnet_buffer (b)->sw_if_index[VLIB_RX] = vnet_buffer (b)->ip.rx_sw_if_index;
+
   if (PREDICT_TRUE (!(b->flags & VLIB_BUFFER_NEXT_PRESENT)))
     b->current_length = hdr->data_length;
   else