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Diffstat (limited to 'src/plugins/snat/in2out.c')
-rw-r--r--src/plugins/snat/in2out.c47
1 files changed, 31 insertions, 16 deletions
diff --git a/src/plugins/snat/in2out.c b/src/plugins/snat/in2out.c
index 8825158aee1..0d5ce4201cd 100644
--- a/src/plugins/snat/in2out.c
+++ b/src/plugins/snat/in2out.c
@@ -94,7 +94,7 @@ _(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
_(IN2OUT_PACKETS, "Good in2out packets processed") \
_(OUT_OF_PORTS, "Out of ports") \
_(BAD_OUTSIDE_FIB, "Outside VRF ID not found") \
-_(BAD_ICMP_TYPE, "icmp type not echo-request") \
+_(BAD_ICMP_TYPE, "unsupported ICMP type") \
_(NO_TRANSLATION, "No translation")
typedef enum {
@@ -177,7 +177,7 @@ snat_not_translate (snat_main_t * sm, snat_runtime_t * rt, u32 sw_if_index0,
if (clib_bihash_search_8_8 (&sm->out2in, &kv0, &value0))
{
/* or is static mappings */
- if (!snat_static_mapping_match(sm, key0, &sm0, 1))
+ if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0))
return 0;
}
else
@@ -333,7 +333,7 @@ static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0,
u8 static_mapping = 1;
/* First try to match static mapping by local address and port */
- if (snat_static_mapping_match (sm, *key0, &key1, 0))
+ if (snat_static_mapping_match (sm, *key0, &key1, 0, 0))
{
static_mapping = 0;
/* Try to create dynamic translation */
@@ -432,8 +432,6 @@ snat_in2out_error_t icmp_get_key(ip4_header_t *ip0,
if (!icmp_is_error_message (icmp0))
{
- if (PREDICT_FALSE(icmp0->type != ICMP4_echo_request))
- return SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE;
key0.protocol = SNAT_PROTOCOL_ICMP;
key0.addr = ip0->src_address;
key0.port = echo0->identifier;
@@ -520,8 +518,9 @@ u32 icmp_match_in2out_slow(snat_main_t *sm, vlib_node_runtime_t *node,
goto out;
}
- if (icmp_is_error_message (icmp0))
+ if (PREDICT_FALSE(icmp0->type != ICMP4_echo_request))
{
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
next0 = SNAT_IN2OUT_NEXT_DROP;
goto out;
}
@@ -533,8 +532,19 @@ u32 icmp_match_in2out_slow(snat_main_t *sm, vlib_node_runtime_t *node,
goto out;
}
else
- s0 = pool_elt_at_index (sm->per_thread_data[cpu_index].sessions,
- value0.value);
+ {
+ if (PREDICT_FALSE(icmp0->type != ICMP4_echo_request &&
+ icmp0->type != ICMP4_echo_reply &&
+ !icmp_is_error_message (icmp0)))
+ {
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+
+ s0 = pool_elt_at_index (sm->per_thread_data[cpu_index].sessions,
+ value0.value);
+ }
out:
*p_key = key0;
@@ -572,6 +582,7 @@ u32 icmp_match_in2out_fast(snat_main_t *sm, vlib_node_runtime_t *node,
snat_session_key_t key0;
snat_session_key_t sm0;
u8 dont_translate = 0;
+ u8 is_addr_only;
u32 next0 = ~0;
int err;
@@ -590,7 +601,7 @@ u32 icmp_match_in2out_fast(snat_main_t *sm, vlib_node_runtime_t *node,
}
key0.fib_index = rx_fib_index0;
- if (snat_static_mapping_match(sm, key0, &sm0, 0))
+ if (snat_static_mapping_match(sm, key0, &sm0, 0, &is_addr_only))
{
if (PREDICT_FALSE(snat_not_translate(sm, rt, sw_if_index0, ip0,
IP_PROTOCOL_ICMP, rx_fib_index0)))
@@ -610,6 +621,15 @@ u32 icmp_match_in2out_fast(snat_main_t *sm, vlib_node_runtime_t *node,
goto out;
}
+ if (PREDICT_FALSE(icmp0->type != ICMP4_echo_request &&
+ (icmp0->type != ICMP4_echo_reply || !is_addr_only) &&
+ !icmp_is_error_message (icmp0)))
+ {
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+
out:
*p_value = sm0;
out2:
@@ -778,7 +798,7 @@ snat_hairpinning (snat_main_t *sm,
if (clib_bihash_search_8_8 (&sm->out2in, &kv0, &value0))
{
/* or static mappings */
- if (!snat_static_mapping_match(sm, key0, &sm0, 1))
+ if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0))
{
new_dst_addr0 = sm0.addr.as_u32;
new_dst_port0 = sm0.port;
@@ -2166,7 +2186,6 @@ snat_in2out_fast_static_map_fn (vlib_main_t * vm,
snat_in2out_next_t next_index;
u32 pkts_processed = 0;
snat_main_t * sm = &snat_main;
- snat_runtime_t * rt = (snat_runtime_t *)node->runtime_data;
u32 stats_node_index;
stats_node_index = snat_in2out_fast_node.index;
@@ -2225,10 +2244,6 @@ snat_in2out_fast_static_map_fn (vlib_main_t * vm,
if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- if (PREDICT_FALSE(snat_not_translate(sm, rt, sw_if_index0, ip0,
- proto0, rx_fib_index0)))
- goto trace0;
-
next0 = icmp_in2out(sm, b0, ip0, icmp0, sw_if_index0,
rx_fib_index0, node, next0, ~0, 0);
goto trace0;
@@ -2238,7 +2253,7 @@ snat_in2out_fast_static_map_fn (vlib_main_t * vm,
key0.port = udp0->src_port;
key0.fib_index = rx_fib_index0;
- if (snat_static_mapping_match(sm, key0, &sm0, 0))
+ if (snat_static_mapping_match(sm, key0, &sm0, 0, 0))
{
b0->error = node->errors[SNAT_IN2OUT_ERROR_NO_TRANSLATION];
next0= SNAT_IN2OUT_NEXT_DROP;