u8 is_addr_only;
u32 next0 = ~0;
int err;
+ u8 identity_nat;
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
/* Try to match static mapping by external address and port,
destination address and port in packet */
if (snat_static_mapping_match
- (sm, key0, &sm0, 1, &is_addr_only, 0, 0, 0))
+ (sm, key0, &sm0, 1, &is_addr_only, 0, 0, 0, &identity_nat))
{
if (!sm->forwarding_enabled)
{
goto out;
}
+ if (PREDICT_FALSE (identity_nat))
+ {
+ dont_translate = 1;
+ goto out;
+ }
/* Create session initiated by host from external network */
s0 = create_session_for_static_mapping (sm, b0, sm0, key0,
node, thread_index,
}
key0.fib_index = rx_fib_index0;
- if (snat_static_mapping_match (sm, key0, &sm0, 1, &is_addr_only, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, key0, &sm0, 1, &is_addr_only, 0, 0, 0, 0))
{
/* Don't NAT packet aimed at the intfc address */
if (is_interface_addr (sm, node, sw_if_index0, ip0->dst_address.as_u32))
if (PREDICT_TRUE (!ip4_is_fragment (ip0)))
{
- sum0 = ip_incremental_checksum (0, icmp0,
- ntohs (ip0->length) -
- ip4_header_bytes (ip0));
+ sum0 = ip_incremental_checksum_buffer (sm->vlib_main, b0, (u8 *) icmp0 -
+ (u8 *)
+ vlib_buffer_get_current (b0),
+ ntohs (ip0->length) -
+ ip4_header_bytes (ip0), 0);
checksum0 = ~ip_csum_fold (sum0);
if (checksum0 != 0 && checksum0 != 0xffff)
{
u32 proto0, proto1;
snat_session_t *s0 = 0, *s1 = 0;
clib_bihash_kv_8_8_t kv0, kv1, value0, value1;
+ u8 identity_nat0, identity_nat1;
/* Prefetch next iteration. */
{
goto trace0;
}
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (ip4_is_fragment (ip0)))
{
- next0 = icmp_out2in_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
+ next0 = SNAT_OUT2IN_NEXT_REASS;
goto trace0;
}
- if (PREDICT_FALSE (ip4_is_fragment (ip0)))
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = SNAT_OUT2IN_NEXT_REASS;
+ next0 = icmp_out2in_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
goto trace0;
}
{
/* Try to match static mapping by external address and port,
destination address and port in packet */
- if (snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, key0, &sm0, 1, 0, 0, 0, 0, &identity_nat0))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
goto trace0;
}
+ if (PREDICT_FALSE (identity_nat0))
+ goto trace0;
+
/* Create session initiated by host from external network */
s0 = create_session_for_static_mapping (sm, b0, sm0, key0, node,
thread_index, now);
goto trace1;
}
- if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (ip4_is_fragment (ip1)))
{
- next1 = icmp_out2in_slow_path
- (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
- next1, now, thread_index, &s1);
+ next1 = SNAT_OUT2IN_NEXT_REASS;
goto trace1;
}
- if (PREDICT_FALSE (ip4_is_fragment (ip1)))
+ if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
{
- next1 = SNAT_OUT2IN_NEXT_REASS;
+ next1 = icmp_out2in_slow_path
+ (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
+ next1, now, thread_index, &s1);
goto trace1;
}
{
/* Try to match static mapping by external address and port,
destination address and port in packet */
- if (snat_static_mapping_match (sm, key1, &sm1, 1, 0, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, key1, &sm1, 1, 0, 0, 0, 0, &identity_nat1))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
goto trace1;
}
+ if (PREDICT_FALSE (identity_nat1))
+ goto trace1;
+
/* Create session initiated by host from external network */
s1 = create_session_for_static_mapping (sm, b1, sm1, key1, node,
thread_index, now);
u32 proto0;
snat_session_t *s0 = 0;
clib_bihash_kv_8_8_t kv0, value0;
+ u8 identity_nat0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
goto trace00;
}
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (ip4_is_fragment (ip0)))
{
- next0 = icmp_out2in_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
+ next0 = SNAT_OUT2IN_NEXT_REASS;
goto trace00;
}
- if (PREDICT_FALSE (ip4_is_fragment (ip0)))
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = SNAT_OUT2IN_NEXT_REASS;
+ next0 = icmp_out2in_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
goto trace00;
}
{
/* Try to match static mapping by external address and port,
destination address and port in packet */
- if (snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, key0, &sm0, 1, 0, 0, 0, 0, &identity_nat0))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
goto trace00;
}
+ if (PREDICT_FALSE (identity_nat0))
+ goto trace00;
+
/* Create session initiated by host from external network */
s0 = create_session_for_static_mapping (sm, b0, sm0, key0, node,
thread_index, now);
nat_reass_ip4_t *reass0;
udp_header_t *udp0;
tcp_header_t *tcp0;
+ icmp46_header_t *icmp0;
snat_session_key_t key0, sm0;
clib_bihash_kv_8_8_t kv0, value0;
snat_session_t *s0 = 0;
u16 old_port0, new_port0;
ip_csum_t sum0;
+ u8 identity_nat0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
ip0 = (ip4_header_t *) vlib_buffer_get_current (b0);
udp0 = ip4_next_header (ip0);
tcp0 = (tcp_header_t *) udp0;
+ icmp0 = (icmp46_header_t *) udp0;
proto0 = ip_proto_to_snat_proto (ip0->protocol);
reass0 = nat_ip4_reass_find_or_create (ip0->src_address,
if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
{
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ {
+ next0 = icmp_out2in_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+
+ if (PREDICT_TRUE (next0 != SNAT_OUT2IN_NEXT_DROP))
+ {
+ if (s0)
+ reass0->sess_index = s0 - per_thread_data->sessions;
+ else
+ reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
+ reass0->thread_index = thread_index;
+ nat_ip4_reass_get_frags (reass0,
+ &fragments_to_loopback);
+ }
+
+ goto trace0;
+ }
+
key0.addr = ip0->dst_address;
key0.port = udp0->dst_port;
key0.protocol = proto0;
/* Try to match static mapping by external address and port,
destination address and port in packet */
if (snat_static_mapping_match
- (sm, key0, &sm0, 1, 0, 0, 0, 0))
+ (sm, key0, &sm0, 1, 0, 0, 0, 0, &identity_nat0))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
goto trace0;
}
+ if (PREDICT_FALSE (identity_nat0))
+ goto trace0;
+
/* Create session initiated by host from external network */
s0 =
create_session_for_static_mapping (sm, b0, sm0, key0,
u32 len = vec_len (fragments_to_loopback);
if (len <= VLIB_FRAME_SIZE)
{
- clib_memcpy (from, fragments_to_loopback,
- sizeof (u32) * len);
+ clib_memcpy_fast (from, fragments_to_loopback,
+ sizeof (u32) * len);
n_left_from = len;
vec_reset_length (fragments_to_loopback);
}
else
{
- clib_memcpy (from,
- fragments_to_loopback + (len -
- VLIB_FRAME_SIZE),
- sizeof (u32) * VLIB_FRAME_SIZE);
+ clib_memcpy_fast (from, fragments_to_loopback +
+ (len - VLIB_FRAME_SIZE),
+ sizeof (u32) * VLIB_FRAME_SIZE);
n_left_from = VLIB_FRAME_SIZE;
_vec_len (fragments_to_loopback) = len - VLIB_FRAME_SIZE;
}
key0.port = udp0->dst_port;
key0.fib_index = rx_fib_index0;
- if (snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0))
+ if (snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0, 0))
{
b0->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION];
goto trace00;
Code Review / vpp.git / blobdiff