#include <vppinfra/error.h>
#include <nat/nat.h>
#include <nat/nat_ipfix_logging.h>
-#include <nat/nat_reass.h>
#include <nat/nat_inlines.h>
#include <nat/nat44_inlines.h>
#include <nat/nat_syslog.h>
u32 rx_fib_index,
clib_bihash_kv_16_8_t * kv,
snat_session_t ** sessionp,
- vlib_node_runtime_t * node, u32 next, u32 thread_index, f64 now,
- tcp_header_t * tcp)
+ vlib_node_runtime_t * node, u32 next, u32 thread_index, f64 now)
{
snat_session_t *s = 0;
snat_user_t *u;
if (proto == SNAT_PROTOCOL_TCP)
{
- if (!tcp_is_init (tcp))
+ if (!tcp_flags_is_init
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
{
b->error = node->errors[NAT_IN2OUT_ED_ERROR_NON_SYN];
return NAT_NEXT_DROP;
{
nat_ed_ses_key_t key;
clib_bihash_kv_16_8_t kv, value;
- udp_header_t *udp;
snat_session_t *s = 0;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
if (ip->protocol == IP_PROTOCOL_ICMP)
{
key.as_u64[0] = key.as_u64[1] = 0;
- if (get_icmp_i2o_ed_key (ip, &key))
+ if (get_icmp_i2o_ed_key (b, ip, &key))
return 0;
key.fib_index = 0;
kv.key[0] = key.as_u64[0];
}
else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP)
{
- udp = ip4_next_header (ip);
make_ed_kv (&kv, &ip->src_address, &ip->dst_address, ip->protocol, 0,
- udp->src_port, udp->dst_port);
+ vnet_buffer (b)->ip.reass.l4_src_port,
+ vnet_buffer (b)->ip.reass.l4_dst_port);
}
else
{
{
if (ip->protocol == IP_PROTOCOL_TCP)
{
- tcp_header_t *tcp = ip4_next_header (ip);
- if (nat44_set_tcp_session_state_i2o (sm, s, tcp, thread_index))
+ if (nat44_set_tcp_session_state_i2o (sm, s, b, thread_index))
return 1;
}
/* Accounting */
u8 * p_proto, snat_session_key_t * p_value,
u8 * p_dont_translate, void *d, void *e)
{
- icmp46_header_t *icmp;
u32 sw_if_index;
u32 rx_fib_index;
nat_ed_ses_key_t key;
int err;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- icmp = (icmp46_header_t *) ip4_next_header (ip);
sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
key.as_u64[0] = key.as_u64[1] = 0;
- err = get_icmp_i2o_ed_key (ip, &key);
+ err = get_icmp_i2o_ed_key (b, ip, &key);
if (err != 0)
{
b->error = node->errors[err];
{
if (vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0)
{
- if (PREDICT_FALSE (nat44_ed_not_translate_output_feature (sm, ip,
- key.proto,
- key.
- l_port,
- key.
- r_port,
- thread_index,
- sw_if_index,
- vnet_buffer
- (b)->
- sw_if_index
- [VLIB_TX])))
+ if (PREDICT_FALSE
+ (nat44_ed_not_translate_output_feature
+ (sm, ip, key.proto, key.l_port, key.r_port, thread_index,
+ sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_TX])))
{
dont_translate = 1;
goto out;
}
}
- if (PREDICT_FALSE (icmp_is_error_message (icmp)))
+ if (PREDICT_FALSE
+ (icmp_type_is_error_message
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
{
b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
next = NAT_NEXT_DROP;
}
next = slow_path_ed (sm, b, rx_fib_index, &kv, &s, node, next,
- thread_index, vlib_time_now (sm->vlib_main), 0);
+ thread_index, vlib_time_now (sm->vlib_main));
if (PREDICT_FALSE (next == NAT_NEXT_DROP))
goto out;
}
else
{
- if (PREDICT_FALSE (icmp->type != ICMP4_echo_request &&
- icmp->type != ICMP4_echo_reply &&
- !icmp_is_error_message (icmp)))
+ if (PREDICT_FALSE
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
+ ICMP4_echo_request
+ && vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
+ ICMP4_echo_reply
+ && !icmp_type_is_error_message (vnet_buffer (b)->ip.
+ reass.icmp_type_or_tcp_flags)))
{
b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
next = NAT_NEXT_DROP;
u32 thread_index = vm->thread_index;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
- 0, fragments = 0, def_slow, def_reass;
+ 0, def_slow;
def_slow = is_output_feature ? NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH :
NAT_NEXT_IN2OUT_ED_SLOW_PATH;
- def_reass = is_output_feature ? NAT_NEXT_IN2OUT_ED_OUTPUT_REASS :
- NAT_NEXT_IN2OUT_ED_REASS;
-
stats_node_index = is_slow_path ? sm->ed_in2out_slowpath_node_index :
sm->ed_in2out_node_index;
vnet_feature_next (&nat_buffer_opaque (b1)->arc_next, b1);
}
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
- iph_offset1 = vnet_buffer (b1)->ip.save_rewrite_length;
+ iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
+ iph_offset1 = vnet_buffer (b1)->ip.reass.save_rewrite_length;
}
next0 = nat_buffer_opaque (b0)->arc_next;
goto trace00;
}
- if (ip4_is_fragment (ip0))
- {
- next0 = def_reass;
- fragments++;
- goto trace00;
- }
-
if (is_output_feature)
{
if (PREDICT_FALSE
}
make_ed_kv (&kv0, &ip0->src_address, &ip0->dst_address,
- ip0->protocol, rx_fib_index0, udp0->src_port,
- udp0->dst_port);
+ ip0->protocol, rx_fib_index0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port);
if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
{
{
if (PREDICT_FALSE
(nat44_ed_not_translate_output_feature
- (sm, ip0, ip0->protocol, udp0->src_port,
- udp0->dst_port, thread_index, sw_if_index0,
+ (sm, ip0, ip0->protocol,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index0,
vnet_buffer (b0)->sw_if_index[VLIB_TX])))
goto trace00;
if (PREDICT_FALSE
((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
&& proto0 == SNAT_PROTOCOL_UDP
- && (udp0->dst_port ==
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
clib_host_to_net_u16
(UDP_DST_PORT_dhcp_to_server))))
goto trace00;
next0 =
slow_path_ed (sm, b0, rx_fib_index0, &kv0, &s0, node,
- next0, thread_index, now, tcp0);
+ next0, thread_index, now);
if (PREDICT_FALSE (next0 == NAT_NEXT_DROP))
goto trace00;
dst_address);
ip0->checksum = ip_csum_fold (sum0);
- old_port0 = udp0->src_port;
- new_port0 = udp0->src_port = s0->out2in.port;
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
- dst_address);
- sum0 = ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
- length);
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
- s0->ext_host_addr.as_u32,
- ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
- tcp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ new_port0 = udp0->src_port = s0->out2in.port;
+ sum0 = tcp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address);
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
+ length);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
+ s0->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.
+ reass.l4_dst_port, s0->ext_host_port,
+ ip4_header_t, length);
+ tcp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ mss_clamping (sm, tcp0, &sum0);
+ tcp0->checksum = ip_csum_fold (sum0);
}
- mss_clamping (sm, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
tcp_packets++;
- if (nat44_set_tcp_session_state_i2o
- (sm, s0, tcp0, thread_index))
+ if (nat44_set_tcp_session_state_i2o (sm, s0, b0, thread_index))
goto trace00;
}
- else if (udp0->checksum)
+ else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
+ && udp0->checksum)
{
+ new_port0 = udp0->src_port = s0->out2in.port;
sum0 = udp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
dst_address);
sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
s0->ext_host_addr.as_u32,
ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ s0->ext_host_port, ip4_header_t, length);
udp0->dst_port = s0->ext_host_port;
ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
}
}
else
{
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- udp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ new_port0 = udp0->src_port = s0->out2in.port;
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ udp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ udp_packets++;
}
- udp_packets++;
}
/* Accounting */
{
s1 = nat44_ed_in2out_unknown_proto (sm, b1, ip1,
rx_fib_index1,
- thread_index, now, vm,
- node);
+ thread_index, now,
+ vm, node);
if (!s1)
next1 = NAT_NEXT_DROP;
other_packets++;
if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
{
next1 = icmp_in2out_ed_slow_path
- (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
- next1, now, thread_index, &s1);
+ (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1,
+ node, next1, now, thread_index, &s1);
icmp_packets++;
goto trace01;
}
goto trace01;
}
- if (ip4_is_fragment (ip1))
- {
- next1 = def_reass;
- fragments++;
- goto trace01;
- }
-
if (is_output_feature)
{
if (PREDICT_FALSE
}
make_ed_kv (&kv1, &ip1->src_address, &ip1->dst_address,
- ip1->protocol, rx_fib_index1, udp1->src_port,
- udp1->dst_port);
+ ip1->protocol, rx_fib_index1,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ vnet_buffer (b1)->ip.reass.l4_dst_port);
if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv1, &value1))
{
{
if (PREDICT_FALSE
(nat44_ed_not_translate_output_feature
- (sm, ip1, ip1->protocol, udp1->src_port,
- udp1->dst_port, thread_index, sw_if_index1,
+ (sm, ip1, ip1->protocol,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ vnet_buffer (b1)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index1,
vnet_buffer (b1)->sw_if_index[VLIB_TX])))
goto trace01;
if (PREDICT_FALSE
((b1->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
&& proto1 == SNAT_PROTOCOL_UDP
- && (udp1->dst_port ==
+ && (vnet_buffer (b1)->ip.reass.l4_dst_port ==
clib_host_to_net_u16
(UDP_DST_PORT_dhcp_to_server))))
goto trace01;
{
if (PREDICT_FALSE (nat44_ed_not_translate (sm, node,
sw_if_index1,
- ip1, proto1,
+ ip1,
+ proto1,
rx_fib_index1,
thread_index)))
goto trace01;
next1 =
slow_path_ed (sm, b1, rx_fib_index1, &kv1, &s1, node,
- next1, thread_index, now, tcp1);
+ next1, thread_index, now);
if (PREDICT_FALSE (next1 == NAT_NEXT_DROP))
goto trace01;
dst_address);
ip1->checksum = ip_csum_fold (sum1);
- old_port1 = udp1->src_port;
- new_port1 = udp1->src_port = s1->out2in.port;
+ old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP))
{
- sum1 = tcp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t,
- dst_address);
- sum1 = ip_csum_update (sum1, old_port1, new_port1, ip4_header_t,
- length);
- if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- sum1 = ip_csum_update (sum1, ip1->dst_address.as_u32,
- s1->ext_host_addr.as_u32,
- ip4_header_t, dst_address);
- sum1 = ip_csum_update (sum1, tcp1->dst_port,
- s1->ext_host_port, ip4_header_t,
- length);
- tcp1->dst_port = s1->ext_host_port;
- ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ new_port1 = udp1->src_port = s1->out2in.port;
+ sum1 = tcp1->checksum;
+ sum1 =
+ ip_csum_update (sum1, old_addr1, new_addr1,
+ ip4_header_t, dst_address);
+ sum1 =
+ ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t, length);
+ if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ {
+ sum1 =
+ ip_csum_update (sum1, ip1->dst_address.as_u32,
+ s1->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum1 =
+ ip_csum_update (sum1,
+ vnet_buffer (b1)->ip.
+ reass.l4_dst_port, s1->ext_host_port,
+ ip4_header_t, length);
+ tcp1->dst_port = s1->ext_host_port;
+ ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ }
+ tcp1->checksum = ip_csum_fold (sum1);
+ mss_clamping (sm, tcp1, &sum1);
}
- tcp1->checksum = ip_csum_fold (sum1);
- mss_clamping (sm, tcp1, &sum1);
tcp_packets++;
- if (nat44_set_tcp_session_state_i2o
- (sm, s1, tcp1, thread_index))
+ if (nat44_set_tcp_session_state_i2o (sm, s1, b1, thread_index))
goto trace01;
}
- else if (udp1->checksum)
+ else if (!vnet_buffer (b1)->ip.reass.is_non_first_fragment
+ && udp1->checksum)
{
+ new_port1 = udp1->src_port = s1->out2in.port;
sum1 = udp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t,
- dst_address);
- sum1 = ip_csum_update (sum1, old_port1, new_port1, ip4_header_t,
- length);
+ sum1 =
+ ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t,
+ dst_address);
+ sum1 =
+ ip_csum_update (sum1, old_port1, new_port1, ip4_header_t,
+ length);
if (PREDICT_FALSE (is_twice_nat_session (s1)))
{
sum1 = ip_csum_update (sum1, ip1->dst_address.as_u32,
s1->ext_host_addr.as_u32,
ip4_header_t, dst_address);
- sum1 = ip_csum_update (sum1, tcp1->dst_port,
- s1->ext_host_port, ip4_header_t,
- length);
+ sum1 =
+ ip_csum_update (sum1,
+ vnet_buffer (b1)->ip.reass.l4_dst_port,
+ s1->ext_host_port, ip4_header_t, length);
udp1->dst_port = s1->ext_host_port;
ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
}
}
else
{
- if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ if (!vnet_buffer (b1)->ip.reass.is_non_first_fragment)
{
- udp1->dst_port = s1->ext_host_port;
- ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ new_port1 = udp1->src_port = s1->out2in.port;
+ if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ {
+ udp1->dst_port = s1->ext_host_port;
+ ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ }
}
udp_packets++;
}
/* Accounting */
nat44_session_update_counters (s1, now,
- vlib_buffer_length_in_chain (vm, b1),
+ vlib_buffer_length_in_chain (vm,
+ b1),
thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s1, thread_index);
if (PREDICT_TRUE (!is_slow_path))
vnet_feature_next (&nat_buffer_opaque (b0)->arc_next, b0);
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+ iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
}
next0 = nat_buffer_opaque (b0)->arc_next;
{
s0 = nat44_ed_in2out_unknown_proto (sm, b0, ip0,
rx_fib_index0,
- thread_index, now, vm,
- node);
+ thread_index, now,
+ vm, node);
if (!s0)
next0 = NAT_NEXT_DROP;
other_packets++;
if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
next0 = icmp_in2out_ed_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
+ node, next0, now, thread_index, &s0);
icmp_packets++;
goto trace0;
}
goto trace0;
}
- if (ip4_is_fragment (ip0))
- {
- next0 = def_reass;
- fragments++;
- goto trace0;
- }
-
if (is_output_feature)
{
if (PREDICT_FALSE
}
make_ed_kv (&kv0, &ip0->src_address, &ip0->dst_address,
- ip0->protocol, rx_fib_index0, udp0->src_port,
- udp0->dst_port);
+ ip0->protocol, rx_fib_index0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port);
if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
{
{
if (PREDICT_FALSE
(nat44_ed_not_translate_output_feature
- (sm, ip0, ip0->protocol, udp0->src_port,
- udp0->dst_port, thread_index, sw_if_index0,
+ (sm, ip0, ip0->protocol,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index0,
vnet_buffer (b0)->sw_if_index[VLIB_TX])))
goto trace0;
if (PREDICT_FALSE
((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
&& proto0 == SNAT_PROTOCOL_UDP
- && (udp0->dst_port ==
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
clib_host_to_net_u16
(UDP_DST_PORT_dhcp_to_server))))
goto trace0;
{
if (PREDICT_FALSE (nat44_ed_not_translate (sm, node,
sw_if_index0,
- ip0, proto0,
+ ip0,
+ proto0,
rx_fib_index0,
thread_index)))
goto trace0;
next0 =
slow_path_ed (sm, b0, rx_fib_index0, &kv0, &s0, node,
- next0, thread_index, now, tcp0);
+ next0, thread_index, now);
if (PREDICT_FALSE (next0 == NAT_NEXT_DROP))
goto trace0;
dst_address);
ip0->checksum = ip_csum_fold (sum0);
- old_port0 = udp0->src_port;
- new_port0 = udp0->src_port = s0->out2in.port;
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
- dst_address);
- sum0 = ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
- length);
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
- s0->ext_host_addr.as_u32,
- ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
- tcp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ new_port0 = udp0->src_port = s0->out2in.port;
+ sum0 = tcp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0, new_addr0,
+ ip4_header_t, dst_address);
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t, length);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ sum0 =
+ ip_csum_update (sum0, ip0->dst_address.as_u32,
+ s0->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.
+ reass.l4_dst_port, s0->ext_host_port,
+ ip4_header_t, length);
+ tcp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ mss_clamping (sm, tcp0, &sum0);
+ tcp0->checksum = ip_csum_fold (sum0);
}
- mss_clamping (sm, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
tcp_packets++;
- if (nat44_set_tcp_session_state_i2o
- (sm, s0, tcp0, thread_index))
+ if (nat44_set_tcp_session_state_i2o (sm, s0, b0, thread_index))
goto trace0;
}
- else if (udp0->checksum)
+ else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
+ && udp0->checksum)
{
+ new_port0 = udp0->src_port = s0->out2in.port;
sum0 = udp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
- dst_address);
- sum0 = ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
- length);
+ sum0 =
+ ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address);
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
+ length);
if (PREDICT_FALSE (is_twice_nat_session (s0)))
{
sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
s0->ext_host_addr.as_u32,
ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ s0->ext_host_port, ip4_header_t, length);
udp0->dst_port = s0->ext_host_port;
ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
}
}
else
{
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- udp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ new_port0 = udp0->src_port = s0->out2in.port;
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ udp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ udp_packets++;
}
- udp_packets++;
}
/* Accounting */
nat44_session_update_counters (s0, now,
- vlib_buffer_length_in_chain (vm, b0),
- thread_index);
+ vlib_buffer_length_in_chain
+ (vm, b0), thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s0, thread_index);
vlib_node_increment_counter (vm, stats_node_index,
NAT_IN2OUT_ED_ERROR_OTHER_PACKETS,
other_packets);
- vlib_node_increment_counter (vm, stats_node_index,
- NAT_IN2OUT_ED_ERROR_FRAGMENTS, fragments);
-
- return frame->n_vectors;
-}
-
-static inline uword
-nat44_ed_in2out_reass_node_fn_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- int is_output_feature)
-{
- u32 n_left_from, *from, *to_next;
- nat_next_t next_index;
- u32 pkts_processed = 0, cached_fragments = 0;
- snat_main_t *sm = &snat_main;
- f64 now = vlib_time_now (vm);
- u32 thread_index = vm->thread_index;
- snat_main_per_thread_data_t *per_thread_data =
- &sm->per_thread_data[thread_index];
- u32 *fragments_to_drop = 0;
- u32 *fragments_to_loopback = 0;
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0, sw_if_index0, proto0, rx_fib_index0, new_addr0, old_addr0;
- u32 iph_offset0 = 0;
- vlib_buffer_t *b0;
- u32 next0;
- u8 cached0 = 0;
- ip4_header_t *ip0 = 0;
- nat_reass_ip4_t *reass0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- icmp46_header_t *icmp0;
- clib_bihash_kv_16_8_t kv0, value0;
- snat_session_t *s0 = 0;
- u16 old_port0, new_port0;
- ip_csum_t sum0;
-
- /* speculatively enqueue b0 to the current next frame */
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- next0 = nat_buffer_opaque (b0)->arc_next;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 =
- fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
- sw_if_index0);
-
- if (PREDICT_FALSE (nat_reass_is_drop_frag (0)))
- {
- next0 = NAT_NEXT_DROP;
- b0->error = node->errors[NAT_IN2OUT_ED_ERROR_DROP_FRAGMENT];
- goto trace0;
- }
-
- if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
-
- ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
- iph_offset0);
-
- 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,
- ip0->dst_address,
- ip0->fragment_id,
- ip0->protocol,
- 1, &fragments_to_drop);
-
- if (PREDICT_FALSE (!reass0))
- {
- next0 = NAT_NEXT_DROP;
- b0->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_REASS];
- nat_elog_notice ("maximum reassemblies exceeded");
- goto trace0;
- }
-
- if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
- {
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
- {
- if (is_output_feature)
- {
- if (PREDICT_FALSE
- (nat_not_translate_output_feature_fwd
- (sm, ip0, thread_index, now, vm, b0)))
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- goto trace0;
- }
-
- next0 = icmp_in2out_ed_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
-
- if (PREDICT_TRUE (next0 != NAT_NEXT_DROP))
- {
- if (s0)
- reass0->sess_index = s0 - per_thread_data->sessions;
- else
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- nat_ip4_reass_get_frags (reass0,
- &fragments_to_loopback);
- }
-
- goto trace0;
- }
-
- make_ed_kv (&kv0, &ip0->src_address, &ip0->dst_address,
- ip0->protocol, rx_fib_index0, udp0->src_port,
- udp0->dst_port);
-
- if (clib_bihash_search_16_8
- (&per_thread_data->in2out_ed, &kv0, &value0))
- {
- if (is_output_feature)
- {
- if (PREDICT_FALSE
- (nat44_ed_not_translate_output_feature
- (sm, ip0, ip0->protocol, udp0->src_port,
- udp0->dst_port, thread_index, sw_if_index0,
- vnet_buffer (b0)->sw_if_index[VLIB_TX])))
- {
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- nat_ip4_reass_get_frags (reass0,
- &fragments_to_loopback);
- goto trace0;
- }
-
- /*
- * Send DHCP packets to the ipv4 stack, or we won't
- * be able to use dhcp client on the outside interface
- */
- if (PREDICT_FALSE
- ((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
- && proto0 == SNAT_PROTOCOL_UDP
- && (udp0->dst_port ==
- clib_host_to_net_u16
- (UDP_DST_PORT_dhcp_to_server))))
- goto trace0;
- }
- else
- {
- if (PREDICT_FALSE (nat44_ed_not_translate (sm, node,
- sw_if_index0,
- ip0, proto0,
- rx_fib_index0,
- thread_index)))
- {
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- nat_ip4_reass_get_frags (reass0,
- &fragments_to_loopback);
- goto trace0;
- }
- }
-
- next0 = slow_path_ed (sm, b0, rx_fib_index0, &kv0,
- &s0, node, next0, thread_index, now,
- tcp0);
-
- if (PREDICT_FALSE (next0 == NAT_NEXT_DROP))
- goto trace0;
-
- if (PREDICT_FALSE (!s0))
- {
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- goto trace0;
- }
-
- reass0->sess_index = s0 - per_thread_data->sessions;
- }
- else
- {
- s0 = pool_elt_at_index (per_thread_data->sessions,
- value0.value);
- reass0->sess_index = value0.value;
- }
- nat_ip4_reass_get_frags (reass0, &fragments_to_loopback);
- }
- else
- {
- if (reass0->flags & NAT_REASS_FLAG_ED_DONT_TRANSLATE)
- goto trace0;
- if (PREDICT_FALSE (reass0->sess_index == (u32) ~ 0))
- {
- if (nat_ip4_reass_add_fragment
- (thread_index, reass0, bi0, &fragments_to_drop))
- {
- b0->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_FRAG];
- nat_elog_notice
- ("maximum fragments per reassembly exceeded");
- next0 = NAT_NEXT_DROP;
- goto trace0;
- }
- cached0 = 1;
- goto trace0;
- }
- s0 = pool_elt_at_index (per_thread_data->sessions,
- reass0->sess_index);
- }
-
- old_addr0 = ip0->src_address.as_u32;
- ip0->src_address = s0->out2in.addr;
- new_addr0 = ip0->src_address.as_u32;
- if (!is_output_feature)
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
-
- sum0 = ip0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- src_address /* changed member */ );
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
- s0->ext_host_addr.as_u32, ip4_header_t,
- dst_address);
- ip0->checksum = ip_csum_fold (sum0);
-
- if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
- {
- old_port0 = udp0->src_port;
- new_port0 = udp0->src_port = s0->out2in.port;
-
- if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
- {
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- {
- sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
- s0->ext_host_addr.as_u32,
- ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
- tcp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
- }
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else if (udp0->checksum)
- {
- sum0 = udp0->checksum;
- sum0 =
- ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
- dst_address);
- sum0 =
- ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
- length);
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- {
- sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
- s0->ext_host_addr.as_u32,
- ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
- udp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
- }
- udp0->checksum = ip_csum_fold (sum0);
- }
- else
- {
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- {
- udp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
- }
- }
- }
-
- /* Hairpinning */
- nat44_reass_hairpinning (sm, b0, ip0, s0->out2in.port,
- s0->ext_host_port, proto0, 1);
-
- /* Accounting */
- nat44_session_update_counters (s0, now,
- vlib_buffer_length_in_chain (vm, b0),
- thread_index);
- /* Per-user LRU list maintenance */
- nat44_session_update_lru (sm, s0, thread_index);
-
- trace0:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- nat44_reass_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->cached = cached0;
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- }
-
- if (cached0)
- {
- n_left_to_next++;
- to_next--;
- cached_fragments++;
- }
- else
- {
- pkts_processed += next0 == nat_buffer_opaque (b0)->arc_next;
-
- /* verify speculative enqueue, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, next0);
- }
-
- if (n_left_from == 0 && vec_len (fragments_to_loopback))
- {
- from = vlib_frame_vector_args (frame);
- u32 len = vec_len (fragments_to_loopback);
- if (len <= VLIB_FRAME_SIZE)
- {
- clib_memcpy_fast (from, fragments_to_loopback,
- sizeof (u32) * len);
- n_left_from = len;
- vec_reset_length (fragments_to_loopback);
- }
- else
- {
- 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;
- }
- }
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- vlib_node_increment_counter (vm, sm->ed_in2out_reass_node_index,
- NAT_IN2OUT_ED_ERROR_PROCESSED_FRAGMENTS,
- pkts_processed);
- vlib_node_increment_counter (vm, sm->ed_in2out_reass_node_index,
- NAT_IN2OUT_ED_ERROR_CACHED_FRAGMENTS,
- cached_fragments);
-
- nat_send_all_to_node (vm, fragments_to_drop, node,
- &node->errors[NAT_IN2OUT_ED_ERROR_DROP_FRAGMENT],
- NAT_NEXT_DROP);
-
- vec_free (fragments_to_drop);
- vec_free (fragments_to_loopback);
return frame->n_vectors;
}
/* *INDENT-ON* */
VLIB_NODE_FN (nat44_ed_in2out_slowpath_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ vlib_node_runtime_t *
+ node, vlib_frame_t * frame)
{
return nat44_ed_in2out_node_fn_inline (vm, node, frame, 1, 0);
}
/* *INDENT-ON* */
VLIB_NODE_FN (nat44_ed_in2out_output_slowpath_node) (vlib_main_t * vm,
- vlib_node_runtime_t *
- node,
+ vlib_node_runtime_t
+ * node,
vlib_frame_t * frame)
{
return nat44_ed_in2out_node_fn_inline (vm, node, frame, 1, 1);
};
/* *INDENT-ON* */
-
-VLIB_NODE_FN (nat44_ed_in2out_reass_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return nat44_ed_in2out_reass_node_fn_inline (vm, node, frame, 0);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_ed_in2out_reass_node) = {
- .name = "nat44-ed-in2out-reass",
- .vector_size = sizeof (u32),
- .sibling_of = "nat-default",
- .format_trace = format_nat44_reass_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
- .error_strings = nat_in2out_ed_error_strings,
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FN (nat44_ed_in2out_reass_output_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return nat44_ed_in2out_reass_node_fn_inline (vm, node, frame, 1);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_ed_in2out_reass_output_node) = {
- .name = "nat44-ed-in2out-reass-output",
- .vector_size = sizeof (u32),
- .sibling_of = "nat-default",
- .format_trace = format_nat44_reass_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
- .error_strings = nat_in2out_ed_error_strings,
-};
-/* *INDENT-ON* */
-
static u8 *
format_nat_pre_trace (u8 * s, va_list * args)
{
return format (s, "in2out next_index %d", t->next_index);
}
-VLIB_NODE_FN (nat_pre_in2out_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (nat_pre_in2out_node)
+ (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
{
return nat_pre_node_fn_inline (vm, node, frame,
NAT_NEXT_IN2OUT_ED_FAST_PATH);
Code Review / vpp.git / blobdiff