diff options
author | 2018-03-01 04:48:33 -0800 | |
---|---|---|
committer | 2018-03-14 18:46:45 +0000 | |
commit | d30c94afe4e67298b3da6fd839e0210844cf45a5 (patch) | |
tree | 57e6f718e02b84850dec07feff67724218efa05f /src/plugins/nat/in2out.c | |
parent | 341b469c4ded91870ae9cfe45ddd1affa227cf14 (diff) |
NAT44: interface output feature and service host direct access (VPP-1176)
forwarding mode:
session initiaded from service host - translate
session initiaded from remote host - do not translate
Change-Id: I48170ee8e4ad14d3d3083ee31a40ef8d10d6ff32
Signed-off-by: Matus Fabian <matfabia@cisco.com>
(cherry picked from commit 204591d1bd754f6086edcf8b27a95beab929a78f)
Diffstat (limited to 'src/plugins/nat/in2out.c')
-rwxr-xr-x | src/plugins/nat/in2out.c | 65 |
1 files changed, 63 insertions, 2 deletions
diff --git a/src/plugins/nat/in2out.c b/src/plugins/nat/in2out.c index fae930b607f..134d652feb0 100755 --- a/src/plugins/nat/in2out.c +++ b/src/plugins/nat/in2out.c @@ -464,6 +464,47 @@ icmp_get_ed_key(ip4_header_t *ip0, nat_ed_ses_key_t *p_key0) return 0; } +static inline int +nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip) +{ + nat_ed_ses_key_t key; + clib_bihash_kv_16_8_t kv, value; + udp_header_t *udp; + + if (!sm->forwarding_enabled) + return 0; + + if (ip->protocol == IP_PROTOCOL_ICMP) + { + if (icmp_get_ed_key (ip, &key)) + return 0; + } + else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP) + { + udp = ip4_next_header(ip); + key.l_addr = ip->src_address; + key.r_addr = ip->dst_address; + key.proto = ip->protocol; + key.r_port = udp->dst_port; + key.l_port = udp->src_port; + } + else + { + key.l_addr = ip->src_address; + key.r_addr = ip->dst_address; + key.proto = ip->protocol; + key.l_port = key.r_port = 0; + } + key.fib_index = 0; + kv.key[0] = key.as_u64[0]; + kv.key[1] = key.as_u64[1]; + + if (!clib_bihash_search_16_8 (&sm->in2out_ed, &kv, &value)) + return value.value == ~0ULL; + + return 0; +} + /** * Get address and port values to be used for ICMP packet translation * and create session if needed @@ -1283,6 +1324,8 @@ snat_in2out_lb (snat_main_t *sm, if (!clib_bihash_search_16_8 (&sm->in2out_ed, &s_kv, &s_value)) { + if (s_value.value == ~0ULL) + return 0; s = pool_elt_at_index (tsm->sessions, s_value.value); } else @@ -1517,6 +1560,12 @@ snat_in2out_node_fn_inline (vlib_main_t * vm, } else { + if (is_output_feature) + { + if (PREDICT_FALSE(nat_not_translate_output_feature_fwd(sm, ip0))) + goto trace00; + } + if (PREDICT_FALSE (proto0 == ~0 || proto0 == SNAT_PROTOCOL_ICMP)) { next0 = SNAT_IN2OUT_NEXT_SLOW_PATH; @@ -1703,6 +1752,12 @@ snat_in2out_node_fn_inline (vlib_main_t * vm, } else { + if (is_output_feature) + { + if (PREDICT_FALSE(nat_not_translate_output_feature_fwd(sm, ip1))) + goto trace01; + } + if (PREDICT_FALSE (proto1 == ~0 || proto1 == SNAT_PROTOCOL_ICMP)) { next1 = SNAT_IN2OUT_NEXT_SLOW_PATH; @@ -1716,8 +1771,6 @@ snat_in2out_node_fn_inline (vlib_main_t * vm, } } - b1->flags |= VNET_BUFFER_F_IS_NATED; - key1.addr = ip1->src_address; key1.port = udp1->src_port; key1.protocol = proto1; @@ -1780,6 +1833,8 @@ snat_in2out_node_fn_inline (vlib_main_t * vm, } } + b1->flags |= VNET_BUFFER_F_IS_NATED; + old_addr1 = ip1->src_address.as_u32; ip1->src_address = s1->out2in.addr; new_addr1 = ip1->src_address.as_u32; @@ -1925,6 +1980,12 @@ snat_in2out_node_fn_inline (vlib_main_t * vm, } else { + if (is_output_feature) + { + if (PREDICT_FALSE(nat_not_translate_output_feature_fwd(sm, ip0))) + goto trace0; + } + if (PREDICT_FALSE (proto0 == ~0 || proto0 == SNAT_PROTOCOL_ICMP)) { next0 = SNAT_IN2OUT_NEXT_SLOW_PATH; |