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authorJuraj Sloboda <jsloboda@cisco.com>2017-04-14 03:24:45 +0200
committerOle Trøan <otroan@employees.org>2017-04-19 07:06:16 +0000
commitd367768270a3d19447af1a7059068e1f20fd15a6 (patch)
treee37a9d4f2e400892008c1750e9ff854007bf2ffa /src/plugins/snat/in2out.c
parent977c1cbc1d37945391dc65848ab819467ad9efd4 (diff)
Support ping from outside network in 1:1 NAT (VPP-695)
Change-Id: Iec8fd4c2bd26874bd8bda82172af797e9b92592c Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
Diffstat (limited to 'src/plugins/snat/in2out.c')
-rw-r--r--src/plugins/snat/in2out.c45
1 files changed, 24 insertions, 21 deletions
diff --git a/src/plugins/snat/in2out.c b/src/plugins/snat/in2out.c
index 5a2e2b7f2c3..4970fce3004 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 {
@@ -194,7 +194,7 @@ snat_not_translate (snat_main_t * sm, vlib_node_runtime_t *node,
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
@@ -332,7 +332,7 @@ 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 */
@@ -515,8 +515,9 @@ 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;
}
@@ -528,15 +529,18 @@ 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[thread_index].sessions,
- value0.value);
-
- if (PREDICT_FALSE(icmp0->type != ICMP4_echo_request &&
- !icmp_is_error_message (icmp0)))
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = SNAT_IN2OUT_NEXT_DROP;
- goto out;
+ 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[thread_index].sessions,
+ value0.value);
}
out:
@@ -574,6 +578,7 @@ 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;
@@ -591,7 +596,7 @@ 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_fast(sm, node, sw_if_index0, ip0,
IP_PROTOCOL_ICMP, rx_fib_index0)))
@@ -612,14 +617,12 @@ u32 icmp_match_in2out_fast(snat_main_t *sm, vlib_node_runtime_t *node,
}
if (PREDICT_FALSE(icmp0->type != ICMP4_echo_request &&
+ (icmp0->type != ICMP4_echo_reply || !is_addr_only) &&
!icmp_is_error_message (icmp0)))
{
- if (icmp0->type != ICMP4_echo_reply || key0.port != sm0.port)
- {
- b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = SNAT_IN2OUT_NEXT_DROP;
- goto out;
- }
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ goto out;
}
out:
@@ -792,7 +795,7 @@ 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;
@@ -2489,7 +2492,7 @@ 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;