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Diffstat (limited to 'src/plugins/nat/nat_inlines.h')
-rw-r--r--src/plugins/nat/nat_inlines.h125
1 files changed, 22 insertions, 103 deletions
diff --git a/src/plugins/nat/nat_inlines.h b/src/plugins/nat/nat_inlines.h
index 401f1e5747f..3408e533f69 100644
--- a/src/plugins/nat/nat_inlines.h
+++ b/src/plugins/nat/nat_inlines.h
@@ -29,7 +29,7 @@ calc_nat_key (ip4_address_t addr, u16 port, u32 fib_index, u8 proto)
ASSERT (fib_index <= (1 << 14) - 1);
ASSERT (proto <= (1 << 3) - 1);
return (u64) addr.as_u32 << 32 | (u64) port << 16 | fib_index << 3 |
- (proto & 0x7);
+ (proto & 0x7);
}
always_inline void
@@ -518,15 +518,12 @@ split_ed_kv (clib_bihash_kv_16_8_t * kv,
}
static_always_inline int
-get_icmp_i2o_ed_key (vlib_buffer_t * b, ip4_header_t * ip0, u32 rx_fib_index,
- u32 thread_index, u32 session_index,
- nat_protocol_t * nat_proto, u16 * l_port, u16 * r_port,
- clib_bihash_kv_16_8_t * kv)
+nat_get_icmp_session_lookup_values (vlib_buffer_t *b, ip4_header_t *ip0,
+ ip4_address_t *lookup_saddr,
+ u16 *lookup_sport,
+ ip4_address_t *lookup_daddr,
+ u16 *lookup_dport, u8 *lookup_protocol)
{
- u8 proto;
- u16 _l_port, _r_port;
- ip4_address_t *l_addr, *r_addr;
-
icmp46_header_t *icmp0;
icmp_echo_header_t *echo0, *inner_echo0 = 0;
ip4_header_t *inner_ip0 = 0;
@@ -536,121 +533,43 @@ get_icmp_i2o_ed_key (vlib_buffer_t * b, ip4_header_t * ip0, u32 rx_fib_index,
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
echo0 = (icmp_echo_header_t *) (icmp0 + 1);
- if (!icmp_type_is_error_message
- (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
- {
- proto = IP_PROTOCOL_ICMP;
- l_addr = &ip0->src_address;
- r_addr = &ip0->dst_address;
- _l_port = vnet_buffer (b)->ip.reass.l4_src_port;
- _r_port = 0;
- }
- else
- {
- inner_ip0 = (ip4_header_t *) (echo0 + 1);
- l4_header = ip4_next_header (inner_ip0);
- proto = inner_ip0->protocol;
- r_addr = &inner_ip0->src_address;
- l_addr = &inner_ip0->dst_address;
- switch (ip_proto_to_nat_proto (inner_ip0->protocol))
- {
- case NAT_PROTOCOL_ICMP:
- inner_icmp0 = (icmp46_header_t *) l4_header;
- inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
- _r_port = 0;
- _l_port = inner_echo0->identifier;
- break;
- case NAT_PROTOCOL_UDP:
- case NAT_PROTOCOL_TCP:
- _l_port = ((tcp_udp_header_t *) l4_header)->dst_port;
- _r_port = ((tcp_udp_header_t *) l4_header)->src_port;
- break;
- default:
- return NAT_IN2OUT_ED_ERROR_UNSUPPORTED_PROTOCOL;
- }
- }
- init_ed_kv (kv, *l_addr, _l_port, *r_addr, _r_port, rx_fib_index, proto,
- thread_index, session_index);
- if (nat_proto)
- {
- *nat_proto = ip_proto_to_nat_proto (proto);
- }
- if (l_port)
- {
- *l_port = _l_port;
- }
- if (r_port)
- {
- *r_port = _r_port;
- }
- return 0;
-}
-
-static_always_inline int
-get_icmp_o2i_ed_key (vlib_buffer_t * b, ip4_header_t * ip0, u32 rx_fib_index,
- u32 thread_index, u32 session_index,
- nat_protocol_t * nat_proto, u16 * l_port, u16 * r_port,
- clib_bihash_kv_16_8_t * kv)
-{
- icmp46_header_t *icmp0;
- u8 proto;
- ip4_address_t *l_addr, *r_addr;
- u16 _l_port, _r_port;
- icmp_echo_header_t *echo0, *inner_echo0 = 0;
- ip4_header_t *inner_ip0;
- void *l4_header = 0;
- icmp46_header_t *inner_icmp0;
-
- icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
- echo0 = (icmp_echo_header_t *) (icmp0 + 1);
+ // avoid warning about unused variables in caller by setting to bogus values
+ *lookup_sport = 0;
+ *lookup_dport = 0;
if (!icmp_type_is_error_message
(vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
{
- proto = IP_PROTOCOL_ICMP;
- l_addr = &ip0->dst_address;
- r_addr = &ip0->src_address;
- _l_port = vnet_buffer (b)->ip.reass.l4_src_port;
- _r_port = 0;
+ *lookup_protocol = IP_PROTOCOL_ICMP;
+ lookup_saddr->as_u32 = ip0->src_address.as_u32;
+ *lookup_sport = vnet_buffer (b)->ip.reass.l4_src_port;
+ lookup_daddr->as_u32 = ip0->dst_address.as_u32;
+ *lookup_dport = vnet_buffer (b)->ip.reass.l4_dst_port;
}
else
{
inner_ip0 = (ip4_header_t *) (echo0 + 1);
l4_header = ip4_next_header (inner_ip0);
- proto = inner_ip0->protocol;
- l_addr = &inner_ip0->src_address;
- r_addr = &inner_ip0->dst_address;
+ *lookup_protocol = inner_ip0->protocol;
+ lookup_saddr->as_u32 = inner_ip0->dst_address.as_u32;
+ lookup_daddr->as_u32 = inner_ip0->src_address.as_u32;
switch (ip_proto_to_nat_proto (inner_ip0->protocol))
{
case NAT_PROTOCOL_ICMP:
inner_icmp0 = (icmp46_header_t *) l4_header;
inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
- _l_port = inner_echo0->identifier;
- _r_port = 0;
+ *lookup_sport = inner_echo0->identifier;
+ *lookup_dport = inner_echo0->identifier;
break;
case NAT_PROTOCOL_UDP:
case NAT_PROTOCOL_TCP:
- _l_port = ((tcp_udp_header_t *) l4_header)->src_port;
- _r_port = ((tcp_udp_header_t *) l4_header)->dst_port;
+ *lookup_sport = ((tcp_udp_header_t *) l4_header)->dst_port;
+ *lookup_dport = ((tcp_udp_header_t *) l4_header)->src_port;
break;
default:
- return -1;
+ return NAT_IN2OUT_ED_ERROR_UNSUPPORTED_PROTOCOL;
}
}
- init_ed_kv (kv, *l_addr, _l_port, *r_addr, _r_port, rx_fib_index, proto,
- thread_index, session_index);
- if (nat_proto)
- {
- *nat_proto = ip_proto_to_nat_proto (proto);
- }
- if (l_port)
- {
- *l_port = _l_port;
- }
- if (r_port)
- {
- *r_port = _r_port;
- }
return 0;
}