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-rw-r--r--src/vnet/ip/ip4_forward.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index 3556d357f50..c1bfc7d4ce5 100644
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -1517,7 +1517,9 @@ ip4_local_set_next_and_error (vlib_node_runtime_t * error_node,
typedef struct
{
+ /* The src and fib-index together determine if packet n is the same as n-1 */
ip4_address_t src;
+ u32 fib_index;
u32 lbi;
u8 error;
u8 first;
@@ -1551,7 +1553,8 @@ ip4_local_check_src (vlib_buffer_t *b, ip4_header_t *ip0,
* vnet_buffer()->ip.adj_index[VLIB_TX] will be set to the index of the
* adjacency for the source address (the remote sender's address)
*/
- if (PREDICT_TRUE (last_check->src.as_u32 != ip0->src_address.as_u32) ||
+ if (PREDICT_TRUE ((last_check->src.as_u32 != ip0->src_address.as_u32)) ||
+ (last_check->fib_index != vnet_buffer (b)->ip.fib_index) ||
last_check->first)
{
lbi0 = ip4_fib_forwarding_lookup (vnet_buffer (b)->ip.fib_index,
@@ -1587,6 +1590,7 @@ ip4_local_check_src (vlib_buffer_t *b, ip4_header_t *ip0,
last_check->lbi = lbi0;
last_check->error = *error0;
last_check->first = 0;
+ last_check->fib_index = vnet_buffer (b)->ip.fib_index;
}
else
{
@@ -1621,6 +1625,9 @@ ip4_local_check_src_x2 (vlib_buffer_t **b, ip4_header_t **ip,
vnet_buffer (b[1])->sw_if_index[VLIB_TX] :
vnet_buffer (b[1])->ip.fib_index;
+ not_last_hit |= vnet_buffer (b[0])->ip.fib_index ^ last_check->fib_index;
+ not_last_hit |= vnet_buffer (b[1])->ip.fib_index ^ last_check->fib_index;
+
if (is_receive_dpo)
{
const receive_dpo_t *rd0, *rd1;
@@ -1683,6 +1690,7 @@ ip4_local_check_src_x2 (vlib_buffer_t **b, ip4_header_t **ip,
last_check->lbi = lbi[1];
last_check->error = error[1];
last_check->first = 0;
+ last_check->fib_index = vnet_buffer (b[1])->ip.fib_index;
}
else
{
@@ -1752,10 +1760,11 @@ ip4_local_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
* member to make sure the .lbi is initialised for the first
* packet.
*/
- .src = {.as_u32 = 0},
+ .src = { .as_u32 = 0 },
.lbi = ~0,
.error = IP4_ERROR_UNKNOWN_PROTOCOL,
.first = 1,
+ .fib_index = 0,
};
from = vlib_frame_vector_args (frame);