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-rw-r--r--src/vnet/ipsec/ipsec_if_in.c42
1 files changed, 32 insertions, 10 deletions
diff --git a/src/vnet/ipsec/ipsec_if_in.c b/src/vnet/ipsec/ipsec_if_in.c
index 2627e7c1ca6..655668abc1d 100644
--- a/src/vnet/ipsec/ipsec_if_in.c
+++ b/src/vnet/ipsec/ipsec_if_in.c
@@ -23,8 +23,9 @@
#include <vnet/ipsec/esp.h>
/* Statistics (not really errors) */
-#define foreach_ipsec_if_input_error \
-_(RX, "good packets received")
+#define foreach_ipsec_if_input_error \
+_(RX, "good packets received") \
+_(DISABLED, "ipsec packets received on disabled interface")
static char *ipsec_if_input_error_strings[] = {
#define _(sym,string) string,
@@ -73,6 +74,12 @@ ipsec_if_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
u8 icv_len;
ipsec_tunnel_if_t *last_t = NULL;
ipsec_sa_t *sa0;
+ vlib_combined_counter_main_t *rx_counter;
+ vlib_combined_counter_main_t *drop_counter;
+ u32 n_disabled = 0;
+
+ rx_counter = vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX;
+ drop_counter = vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_DROP;
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
@@ -91,6 +98,7 @@ ipsec_if_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
ip4_header_t *ip0;
esp_header_t *esp0;
uword *p;
+ u32 len0;
bi0 = to_next[0] = from[0];
from += 1;
@@ -108,6 +116,8 @@ ipsec_if_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
p = hash_get (im->ipsec_if_pool_index_by_key, key);
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+
if (p)
{
ipsec_tunnel_if_t *t;
@@ -122,10 +132,20 @@ ipsec_if_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
sw_if_index0 = hi->sw_if_index;
vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
+ if (PREDICT_FALSE
+ (!(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP)))
+ {
+ vlib_increment_combined_counter
+ (drop_counter, thread_index, sw_if_index0, 1, len0);
+ b0->error = node->errors[IPSEC_IF_INPUT_ERROR_DISABLED];
+ n_disabled++;
+ goto trace;
+ }
+
if (PREDICT_TRUE (sw_if_index0 == last_sw_if_index))
{
n_packets++;
- n_bytes += vlib_buffer_length_in_chain (vm, b0);
+ n_bytes += len0;
}
else
{
@@ -143,15 +163,14 @@ ipsec_if_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
if (last_t)
{
vlib_increment_combined_counter
- (vim->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_RX,
- thread_index, sw_if_index0, n_packets, n_bytes);
+ (rx_counter, thread_index, sw_if_index0,
+ n_packets, n_bytes);
}
last_sw_if_index = sw_if_index0;
last_t = t;
n_packets = 1;
- n_bytes = vlib_buffer_length_in_chain (vm, b0);
+ n_bytes = len0;
}
}
else
@@ -163,6 +182,7 @@ ipsec_if_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
next0 = im->esp_decrypt_next_index;
}
+ trace:
if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
{
ipsec_if_input_trace_t *tr =
@@ -185,15 +205,17 @@ ipsec_if_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
n_bytes -= n_packets * (sizeof (ip4_header_t) + sizeof (esp_header_t) +
sizeof (esp_footer_t) + 16 /* aes-cbc IV */ +
icv_len);
- vlib_increment_combined_counter (vim->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_RX,
+ vlib_increment_combined_counter (rx_counter,
thread_index,
last_sw_if_index, n_packets, n_bytes);
}
vlib_node_increment_counter (vm, ipsec_if_input_node.index,
IPSEC_IF_INPUT_ERROR_RX,
- from_frame->n_vectors);
+ from_frame->n_vectors - n_disabled);
+
+ vlib_node_increment_counter (vm, ipsec_if_input_node.index,
+ IPSEC_IF_INPUT_ERROR_DISABLED, n_disabled);
return from_frame->n_vectors;
}