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path: root/src/plugins/gtpu/gtpu_decap.c
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Diffstat (limited to 'src/plugins/gtpu/gtpu_decap.c')
-rw-r--r--src/plugins/gtpu/gtpu_decap.c34
1 files changed, 31 insertions, 3 deletions
diff --git a/src/plugins/gtpu/gtpu_decap.c b/src/plugins/gtpu/gtpu_decap.c
index 4193e89c008..5e737d1560f 100644
--- a/src/plugins/gtpu/gtpu_decap.c
+++ b/src/plugins/gtpu/gtpu_decap.c
@@ -1212,6 +1212,7 @@ VLIB_INIT_FUNCTION (ip6_gtpu_bypass_init);
#define foreach_gtpu_flow_error \
_(NONE, "no error") \
+ _(PAYLOAD_ERROR, "Payload type errors") \
_(IP_CHECKSUM_ERROR, "Rx ip checksum errors") \
_(IP_HEADER_ERROR, "Rx ip header errors") \
_(UDP_CHECKSUM_ERROR, "Rx udp checksum errors") \
@@ -1428,7 +1429,16 @@ gtpu_flow_input (vlib_main_t * vm,
/* Pop gtpu header */
vlib_buffer_advance (b0, gtpu_hdr_len0);
- next0 = GTPU_INPUT_NEXT_IP4_INPUT;
+ /* assign the next node */
+ if (PREDICT_FALSE (t0->decap_next_index != GTPU_INPUT_NEXT_IP4_INPUT) &&
+ (t0->decap_next_index != GTPU_INPUT_NEXT_IP6_INPUT))
+ {
+ error0 = GTPU_FLOW_ERROR_PAYLOAD_ERROR;
+ next0 = GTPU_INPUT_NEXT_DROP;
+ goto trace0;
+ }
+ next0 = t0->decap_next_index;
+
sw_if_index0 = t0->sw_if_index;
/* Set packet input sw_if_index to unicast GTPU tunnel for learning */
@@ -1500,7 +1510,16 @@ trace0:
/* Pop gtpu header */
vlib_buffer_advance (b1, gtpu_hdr_len1);
- next1 = GTPU_INPUT_NEXT_IP4_INPUT;
+ /* assign the next node */
+ if (PREDICT_FALSE (t1->decap_next_index != GTPU_INPUT_NEXT_IP4_INPUT) &&
+ (t1->decap_next_index != GTPU_INPUT_NEXT_IP6_INPUT))
+ {
+ next1 = GTPU_FLOW_ERROR_PAYLOAD_ERROR;
+ next1 = GTPU_INPUT_NEXT_DROP;
+ goto trace1;
+ }
+ next1 = t1->decap_next_index;
+
sw_if_index1 = t1->sw_if_index;
/* Required to make the l2 tag push / pop code work on l2 subifs */
@@ -1620,7 +1639,16 @@ trace1:
/* Pop gtpu header */
vlib_buffer_advance (b0, gtpu_hdr_len0);
- next0 = GTPU_INPUT_NEXT_IP4_INPUT;
+ /* assign the next node */
+ if (PREDICT_FALSE (t0->decap_next_index != GTPU_INPUT_NEXT_IP4_INPUT) &&
+ (t0->decap_next_index != GTPU_INPUT_NEXT_IP6_INPUT))
+ {
+ next0 = GTPU_FLOW_ERROR_PAYLOAD_ERROR;
+ next0 = GTPU_INPUT_NEXT_DROP;
+ goto trace00;
+ }
+ next0 = t0->decap_next_index;
+
sw_if_index0 = t0->sw_if_index;
/* Set packet input sw_if_index to unicast GTPU tunnel for learning */