diff options
Diffstat (limited to 'src/plugins/nat/out2in.c')
| -rwxr-xr-x | src/plugins/nat/out2in.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/src/plugins/nat/out2in.c b/src/plugins/nat/out2in.c index f6d6a0a102d..7f811d97b59 100755 --- a/src/plugins/nat/out2in.c +++ b/src/plugins/nat/out2in.c @@ -133,6 +133,7 @@ typedef enum { SNAT_OUT2IN_NEXT_LOOKUP, SNAT_OUT2IN_NEXT_ICMP_ERROR, SNAT_OUT2IN_NEXT_REASS, + SNAT_OUT2IN_NEXT_IN2OUT, SNAT_OUT2IN_N_NEXT, } snat_out2in_next_t; @@ -311,6 +312,26 @@ icmp_get_ed_key(ip4_header_t *ip0, nat_ed_ses_key_t *p_key0) return 0; } +static int +next_src_nat (snat_main_t * sm, ip4_header_t * ip, u32 proto, u16 src_port, + u32 thread_index) +{ + snat_session_key_t key; + clib_bihash_kv_8_8_t kv, value; + + key.addr = ip->src_address; + key.port = src_port; + key.protocol = proto; + key.fib_index = sm->inside_fib_index; + kv.key = key.as_u64; + + if (!clib_bihash_search_8_8 (&sm->per_thread_data[thread_index].in2out, &kv, + &value)) + return 1; + + return 0; +} + static void create_bypass_for_fwd(snat_main_t * sm, ip4_header_t * ip) { @@ -419,8 +440,13 @@ u32 icmp_match_out2in_slow(snat_main_t *sm, vlib_node_runtime_t *node, } else { - create_bypass_for_fwd(sm, ip0); dont_translate = 1; + if (next_src_nat(sm, ip0, key0.protocol, key0.port, thread_index)) + { + next0 = SNAT_OUT2IN_NEXT_IN2OUT; + goto out; + } + create_bypass_for_fwd(sm, ip0); goto out; } } @@ -1156,6 +1182,11 @@ snat_out2in_node_fn (vlib_main_t * vm, } else { + if (next_src_nat(sm, ip0, proto0, udp0->src_port, thread_index)) + { + next0 = SNAT_OUT2IN_NEXT_IN2OUT; + goto trace0; + } create_bypass_for_fwd(sm, ip0); goto trace0; } @@ -1327,6 +1358,11 @@ snat_out2in_node_fn (vlib_main_t * vm, } else { + if (next_src_nat(sm, ip1, proto1, udp1->src_port, thread_index)) + { + next1 = SNAT_OUT2IN_NEXT_IN2OUT; + goto trace1; + } create_bypass_for_fwd(sm, ip1); goto trace1; } @@ -1534,6 +1570,11 @@ snat_out2in_node_fn (vlib_main_t * vm, } else { + if (next_src_nat(sm, ip0, proto0, udp0->src_port, thread_index)) + { + next0 = SNAT_OUT2IN_NEXT_IN2OUT; + goto trace00; + } create_bypass_for_fwd(sm, ip0); goto trace00; } @@ -1661,6 +1702,7 @@ VLIB_REGISTER_NODE (snat_out2in_node) = { [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", [SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass", + [SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out", }, }; VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_node, snat_out2in_node_fn); @@ -1781,6 +1823,11 @@ nat44_out2in_reass_node_fn (vlib_main_t * vm, } else { + if (next_src_nat(sm, ip0, proto0, udp0->src_port, thread_index)) + { + next0 = SNAT_OUT2IN_NEXT_IN2OUT; + goto trace0; + } create_bypass_for_fwd(sm, ip0); goto trace0; } @@ -1952,6 +1999,7 @@ VLIB_REGISTER_NODE (nat44_out2in_reass_node) = { [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", [SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass", + [SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out", }, }; VLIB_NODE_FUNCTION_MULTIARCH (nat44_out2in_reass_node, @@ -2441,6 +2489,7 @@ VLIB_REGISTER_NODE (snat_det_out2in_node) = { [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", [SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass", + [SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out", }, }; VLIB_NODE_FUNCTION_MULTIARCH (snat_det_out2in_node, snat_det_out2in_node_fn); @@ -2934,6 +2983,7 @@ VLIB_REGISTER_NODE (snat_out2in_fast_node) = { [SNAT_OUT2IN_NEXT_DROP] = "error-drop", [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", [SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass", + [SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out", }, }; VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_fast_node, snat_out2in_fast_node_fn); |