vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- u32 n_left_from, *from, *to_next;
- det44_in2out_next_t next_index;
+ u32 n_left_from, *from;
u32 pkts_processed = 0;
det44_main_t *dm = &det44_main;
u32 now = (u32) vlib_time_now (vm);
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
- while (n_left_from > 0)
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
+ u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
+ vlib_get_buffers (vm, from, b, n_left_from);
+
+ while (n_left_from >= 2)
{
- u32 n_left_to_next;
+ vlib_buffer_t *b0, *b1;
+ u32 next0, next1;
+ u32 sw_if_index0, sw_if_index1;
+ ip4_header_t *ip0, *ip1;
+ ip_csum_t sum0, sum1;
+ ip4_address_t new_addr0, old_addr0, new_addr1, old_addr1;
+ u16 old_port0, new_port0, lo_port0, i0;
+ u16 old_port1, new_port1, lo_port1, i1;
+ udp_header_t *udp0, *udp1;
+ tcp_header_t *tcp0, *tcp1;
+ u32 proto0, proto1;
+ snat_det_out_key_t key0, key1;
+ snat_det_map_t *mp0, *mp1;
+ snat_det_session_t *ses0 = 0, *ses1 = 0;
+ u32 rx_fib_index0, rx_fib_index1;
+ icmp46_header_t *icmp0, *icmp1;
+
+ b0 = *b;
+ b++;
+ b1 = *b;
+ b++;
+
+ /* Prefetch next iteration. */
+ if (PREDICT_TRUE (n_left_from >= 4))
+ {
+ vlib_buffer_t *p2, *p3;
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ p2 = *b;
+ p3 = *(b + 1);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ }
- while (n_left_from >= 4 && n_left_to_next >= 2)
+ next0 = DET44_IN2OUT_NEXT_LOOKUP;
+ next1 = DET44_IN2OUT_NEXT_LOOKUP;
+
+ ip0 = vlib_buffer_get_current (b0);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+ if (PREDICT_FALSE (ip0->ttl == 1))
{
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- u32 next0, next1;
- u32 sw_if_index0, sw_if_index1;
- ip4_header_t *ip0, *ip1;
- ip_csum_t sum0, sum1;
- ip4_address_t new_addr0, old_addr0, new_addr1, old_addr1;
- u16 old_port0, new_port0, lo_port0, i0;
- u16 old_port1, new_port1, lo_port1, i1;
- udp_header_t *udp0, *udp1;
- tcp_header_t *tcp0, *tcp1;
- u32 proto0, proto1;
- snat_det_out_key_t key0, key1;
- snat_det_map_t *mp0, *mp1;
- snat_det_session_t *ses0 = 0, *ses1 = 0;
- u32 rx_fib_index0, rx_fib_index1;
- icmp46_header_t *icmp0, *icmp1;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t *p2, *p3;
-
- p2 = vlib_get_buffer (vm, from[2]);
- p3 = vlib_get_buffer (vm, from[3]);
-
- vlib_prefetch_buffer_header (p2, LOAD);
- vlib_prefetch_buffer_header (p3, LOAD);
-
- CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD);
- }
-
- /* speculatively enqueue b0 and b1 to the current next frame */
- to_next[0] = bi0 = from[0];
- to_next[1] = bi1 = from[1];
- from += 2;
- to_next += 2;
- n_left_from -= 2;
- n_left_to_next -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- next0 = DET44_IN2OUT_NEXT_LOOKUP;
- next1 = DET44_IN2OUT_NEXT_LOOKUP;
-
- ip0 = vlib_buffer_get_current (b0);
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-
- if (PREDICT_FALSE (ip0->ttl == 1))
- {
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
- goto trace0;
- }
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace0;
+ }
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- rx_fib_index0 =
- ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
- icmp0 = (icmp46_header_t *) udp0;
-
- // TODO:
- next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0,
- thread_index, &ses0, &mp0);
- goto trace0;
- }
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ rx_fib_index0 =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
+ icmp0 = (icmp46_header_t *) udp0;
+
+ // TODO:
+ next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
+ goto trace0;
+ }
- mp0 = snat_det_map_by_user (&ip0->src_address);
- if (PREDICT_FALSE (!mp0))
- {
- det44_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next0 = DET44_IN2OUT_NEXT_DROP;
- b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
- goto trace0;
- }
+ mp0 = snat_det_map_by_user (&ip0->src_address);
+ if (PREDICT_FALSE (!mp0))
+ {
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
+ goto trace0;
+ }
- snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0);
+ snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0);
- key0.ext_host_addr = ip0->dst_address;
- key0.ext_host_port = tcp0->dst;
+ key0.ext_host_addr = ip0->dst_address;
+ key0.ext_host_port = tcp0->dst;
- ses0 =
- snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0);
+ ses0 =
+ snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0);
+ if (PREDICT_FALSE (!ses0))
+ {
+ for (i0 = 0; i0 < mp0->ports_per_host; i0++)
+ {
+ key0.out_port = clib_host_to_net_u16 (lo_port0 +
+ ((i0 +
+ clib_net_to_host_u16
+ (tcp0->src)) %
+ mp0->ports_per_host));
+
+ if (snat_det_get_ses_by_out
+ (mp0, &ip0->src_address, key0.as_u64))
+ continue;
+
+ ses0 =
+ snat_det_ses_create (thread_index, mp0, &ip0->src_address,
+ tcp0->src, &key0);
+ break;
+ }
if (PREDICT_FALSE (!ses0))
{
- for (i0 = 0; i0 < mp0->ports_per_host; i0++)
- {
- key0.out_port = clib_host_to_net_u16 (lo_port0 +
- ((i0 +
- clib_net_to_host_u16
- (tcp0->src)) %
- mp0->
- ports_per_host));
-
- if (snat_det_get_ses_by_out
- (mp0, &ip0->src_address, key0.as_u64))
- continue;
-
- ses0 =
- snat_det_ses_create (thread_index, mp0, &ip0->src_address,
- tcp0->src, &key0);
- break;
- }
- if (PREDICT_FALSE (!ses0))
- {
- /* too many sessions for user, send ICMP error packet */
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0,
- ICMP4_destination_unreachable,
- ICMP4_destination_unreachable_destination_unreachable_host,
- 0);
- next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
- goto trace0;
- }
+ /* too many sessions for user, send ICMP error packet */
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b0,
+ ICMP4_destination_unreachable,
+ ICMP4_destination_unreachable_destination_unreachable_host,
+ 0);
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace0;
}
+ }
- old_port0 = udp0->src_port;
- udp0->src_port = new_port0 = ses0->out.out_port;
+ old_port0 = udp0->src_port;
+ udp0->src_port = new_port0 = ses0->out.out_port;
- old_addr0.as_u32 = ip0->src_address.as_u32;
- ip0->src_address.as_u32 = new_addr0.as_u32;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
+ old_addr0.as_u32 = ip0->src_address.as_u32;
+ ip0->src_address.as_u32 = new_addr0.as_u32;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
- sum0 = ip0->checksum;
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
+ ip4_header_t, src_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
+
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (tcp0->flags & TCP_FLAG_SYN)
+ ses0->state = DET44_SESSION_TCP_SYN_SENT;
+ else if (tcp0->flags & TCP_FLAG_ACK
+ && ses0->state == DET44_SESSION_TCP_SYN_SENT)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
+ else if (tcp0->flags & TCP_FLAG_FIN
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_FIN_WAIT;
+ else if (tcp0->flags & TCP_FLAG_ACK
+ && ses0->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp0, ses0);
+ else if (tcp0->flags & TCP_FLAG_FIN
+ && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses0->state = DET44_SESSION_TCP_LAST_ACK;
+ else if (tcp0->flags == 0 && ses0->state == DET44_SESSION_UNKNOWN)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
+
+ sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
ip4_header_t,
- src_address /* changed member */ );
- ip0->checksum = ip_csum_fold (sum0);
-
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
- {
- if (tcp0->flags & TCP_FLAG_SYN)
- ses0->state = DET44_SESSION_TCP_SYN_SENT;
- else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == DET44_SESSION_TCP_SYN_SENT)
- ses0->state = DET44_SESSION_TCP_ESTABLISHED;
- else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
- ses0->state = DET44_SESSION_TCP_FIN_WAIT;
- else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == DET44_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (mp0, ses0);
- else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT)
- ses0->state = DET44_SESSION_TCP_LAST_ACK;
- else if (tcp0->flags == 0
- && ses0->state == DET44_SESSION_UNKNOWN)
- ses0->state = DET44_SESSION_TCP_ESTABLISHED;
-
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- mss_clamping (dm->mss_clamping, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else
- {
- ses0->state = DET44_SESSION_UDP_ACTIVE;
-
- if (PREDICT_FALSE (udp0->checksum))
- {
- sum0 = udp0->checksum;
- sum0 =
- ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 =
- ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- udp0->checksum = ip_csum_fold (sum0);
- }
- }
+ dst_address /* changed member */ );
+ sum0 = ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ mss_clamping (dm->mss_clamping, tcp0, &sum0);
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ else
+ {
+ ses0->state = DET44_SESSION_UDP_ACTIVE;
- switch (ses0->state)
+ if (PREDICT_FALSE (udp0->checksum))
{
- case DET44_SESSION_UDP_ACTIVE:
- ses0->expire = now + dm->timeouts.udp;
- break;
- case DET44_SESSION_TCP_SYN_SENT:
- case DET44_SESSION_TCP_FIN_WAIT:
- case DET44_SESSION_TCP_CLOSE_WAIT:
- case DET44_SESSION_TCP_LAST_ACK:
- ses0->expire = now + dm->timeouts.tcp.transitory;
- break;
- case DET44_SESSION_TCP_ESTABLISHED:
- ses0->expire = now + dm->timeouts.tcp.established;
- break;
+ sum0 = udp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
+ ip4_header_t,
+ dst_address /* changed member */ );
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp0->checksum = ip_csum_fold (sum0);
}
+ }
- trace0:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- det44_in2out_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->session_index = ~0;
- if (ses0)
- t->session_index = ses0 - mp0->sessions;
- }
+ switch (ses0->state)
+ {
+ case DET44_SESSION_UDP_ACTIVE:
+ ses0->expire = now + dm->timeouts.udp;
+ break;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses0->expire = now + dm->timeouts.tcp.transitory;
+ break;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses0->expire = now + dm->timeouts.tcp.established;
+ break;
+ }
- pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP;
+ trace0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ det44_in2out_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (ses0)
+ t->session_index = ses0 - mp0->sessions;
+ }
- ip1 = vlib_buffer_get_current (b1);
- udp1 = ip4_next_header (ip1);
- tcp1 = (tcp_header_t *) udp1;
+ pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP;
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ ip1 = vlib_buffer_get_current (b1);
+ udp1 = ip4_next_header (ip1);
+ tcp1 = (tcp_header_t *) udp1;
- if (PREDICT_FALSE (ip1->ttl == 1))
- {
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next1 = DET44_IN2OUT_NEXT_ICMP_ERROR;
- goto trace1;
- }
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
- proto1 = ip_proto_to_nat_proto (ip1->protocol);
+ if (PREDICT_FALSE (ip1->ttl == 1))
+ {
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next1 = DET44_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace1;
+ }
- if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
- {
- rx_fib_index1 =
- ip4_fib_table_get_index_for_sw_if_index (sw_if_index1);
- icmp1 = (icmp46_header_t *) udp1;
+ proto1 = ip_proto_to_nat_proto (ip1->protocol);
- next1 = det44_icmp_in2out (b1, ip1, icmp1, sw_if_index1,
- rx_fib_index1, node, next1,
- thread_index, &ses1, &mp1);
- goto trace1;
- }
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
+ {
+ rx_fib_index1 =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index1);
+ icmp1 = (icmp46_header_t *) udp1;
+
+ next1 = det44_icmp_in2out (b1, ip1, icmp1, sw_if_index1,
+ rx_fib_index1, node, next1,
+ thread_index, &ses1, &mp1);
+ goto trace1;
+ }
- mp1 = snat_det_map_by_user (&ip1->src_address);
- if (PREDICT_FALSE (!mp1))
- {
- det44_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next1 = DET44_IN2OUT_NEXT_DROP;
- b1->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
- goto trace1;
- }
+ mp1 = snat_det_map_by_user (&ip1->src_address);
+ if (PREDICT_FALSE (!mp1))
+ {
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next1 = DET44_IN2OUT_NEXT_DROP;
+ b1->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
+ goto trace1;
+ }
- snat_det_forward (mp1, &ip1->src_address, &new_addr1, &lo_port1);
+ snat_det_forward (mp1, &ip1->src_address, &new_addr1, &lo_port1);
- key1.ext_host_addr = ip1->dst_address;
- key1.ext_host_port = tcp1->dst;
+ key1.ext_host_addr = ip1->dst_address;
+ key1.ext_host_port = tcp1->dst;
- ses1 =
- snat_det_find_ses_by_in (mp1, &ip1->src_address, tcp1->src, key1);
+ ses1 =
+ snat_det_find_ses_by_in (mp1, &ip1->src_address, tcp1->src, key1);
+ if (PREDICT_FALSE (!ses1))
+ {
+ for (i1 = 0; i1 < mp1->ports_per_host; i1++)
+ {
+ key1.out_port = clib_host_to_net_u16 (lo_port1 +
+ ((i1 +
+ clib_net_to_host_u16
+ (tcp1->src)) %
+ mp1->ports_per_host));
+
+ if (snat_det_get_ses_by_out
+ (mp1, &ip1->src_address, key1.as_u64))
+ continue;
+
+ ses1 =
+ snat_det_ses_create (thread_index, mp1, &ip1->src_address,
+ tcp1->src, &key1);
+ break;
+ }
if (PREDICT_FALSE (!ses1))
{
- for (i1 = 0; i1 < mp1->ports_per_host; i1++)
- {
- key1.out_port = clib_host_to_net_u16 (lo_port1 +
- ((i1 +
- clib_net_to_host_u16
- (tcp1->src)) %
- mp1->
- ports_per_host));
-
- if (snat_det_get_ses_by_out
- (mp1, &ip1->src_address, key1.as_u64))
- continue;
-
- ses1 =
- snat_det_ses_create (thread_index, mp1, &ip1->src_address,
- tcp1->src, &key1);
- break;
- }
- if (PREDICT_FALSE (!ses1))
- {
- /* too many sessions for user, send ICMP error packet */
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b1,
- ICMP4_destination_unreachable,
- ICMP4_destination_unreachable_destination_unreachable_host,
- 0);
- next1 = DET44_IN2OUT_NEXT_ICMP_ERROR;
- goto trace1;
- }
+ /* too many sessions for user, send ICMP error packet */
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b1,
+ ICMP4_destination_unreachable,
+ ICMP4_destination_unreachable_destination_unreachable_host,
+ 0);
+ next1 = DET44_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace1;
}
+ }
+
+ old_port1 = udp1->src_port;
+ udp1->src_port = new_port1 = ses1->out.out_port;
- old_port1 = udp1->src_port;
- udp1->src_port = new_port1 = ses1->out.out_port;
+ old_addr1.as_u32 = ip1->src_address.as_u32;
+ ip1->src_address.as_u32 = new_addr1.as_u32;
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
- old_addr1.as_u32 = ip1->src_address.as_u32;
- ip1->src_address.as_u32 = new_addr1.as_u32;
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
+ sum1 = ip1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
+ ip4_header_t, src_address /* changed member */ );
+ ip1->checksum = ip_csum_fold (sum1);
- sum1 = ip1->checksum;
+ if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
+ {
+ if (tcp1->flags & TCP_FLAG_SYN)
+ ses1->state = DET44_SESSION_TCP_SYN_SENT;
+ else if (tcp1->flags & TCP_FLAG_ACK
+ && ses1->state == DET44_SESSION_TCP_SYN_SENT)
+ ses1->state = DET44_SESSION_TCP_ESTABLISHED;
+ else if (tcp1->flags & TCP_FLAG_FIN
+ && ses1->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses1->state = DET44_SESSION_TCP_FIN_WAIT;
+ else if (tcp1->flags & TCP_FLAG_ACK
+ && ses1->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp1, ses1);
+ else if (tcp1->flags & TCP_FLAG_FIN
+ && ses1->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses1->state = DET44_SESSION_TCP_LAST_ACK;
+ else if (tcp1->flags == 0 && ses1->state == DET44_SESSION_UNKNOWN)
+ ses1->state = DET44_SESSION_TCP_ESTABLISHED;
+
+ sum1 = tcp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
ip4_header_t,
- src_address /* changed member */ );
- ip1->checksum = ip_csum_fold (sum1);
+ dst_address /* changed member */ );
+ sum1 = ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ mss_clamping (dm->mss_clamping, tcp1, &sum1);
+ tcp1->checksum = ip_csum_fold (sum1);
+ }
+ else
+ {
+ ses1->state = DET44_SESSION_UDP_ACTIVE;
- if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
- {
- if (tcp1->flags & TCP_FLAG_SYN)
- ses1->state = DET44_SESSION_TCP_SYN_SENT;
- else if (tcp1->flags & TCP_FLAG_ACK
- && ses1->state == DET44_SESSION_TCP_SYN_SENT)
- ses1->state = DET44_SESSION_TCP_ESTABLISHED;
- else if (tcp1->flags & TCP_FLAG_FIN
- && ses1->state == DET44_SESSION_TCP_ESTABLISHED)
- ses1->state = DET44_SESSION_TCP_FIN_WAIT;
- else if (tcp1->flags & TCP_FLAG_ACK
- && ses1->state == DET44_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (mp1, ses1);
- else if (tcp1->flags & TCP_FLAG_FIN
- && ses1->state == DET44_SESSION_TCP_CLOSE_WAIT)
- ses1->state = DET44_SESSION_TCP_LAST_ACK;
- else if (tcp1->flags == 0
- && ses1->state == DET44_SESSION_UNKNOWN)
- ses1->state = DET44_SESSION_TCP_ESTABLISHED;
-
- sum1 = tcp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum1 = ip_csum_update (sum1, old_port1, new_port1,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- mss_clamping (dm->mss_clamping, tcp1, &sum1);
- tcp1->checksum = ip_csum_fold (sum1);
- }
- else
+ if (PREDICT_FALSE (udp1->checksum))
{
- ses1->state = DET44_SESSION_UDP_ACTIVE;
-
- if (PREDICT_FALSE (udp1->checksum))
- {
- sum1 = udp1->checksum;
- sum1 =
- ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum1 =
- ip_csum_update (sum1, old_port1, new_port1,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- udp1->checksum = ip_csum_fold (sum1);
- }
+ sum1 = udp1->checksum;
+ sum1 =
+ ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
+ ip4_header_t,
+ dst_address /* changed member */ );
+ sum1 =
+ ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp1->checksum = ip_csum_fold (sum1);
}
+ }
- switch (ses1->state)
- {
- case DET44_SESSION_UDP_ACTIVE:
- ses1->expire = now + dm->timeouts.udp;
- break;
- case DET44_SESSION_TCP_SYN_SENT:
- case DET44_SESSION_TCP_FIN_WAIT:
- case DET44_SESSION_TCP_CLOSE_WAIT:
- case DET44_SESSION_TCP_LAST_ACK:
- ses1->expire = now + dm->timeouts.tcp.transitory;
- break;
- case DET44_SESSION_TCP_ESTABLISHED:
- ses1->expire = now + dm->timeouts.tcp.established;
- break;
- }
+ switch (ses1->state)
+ {
+ case DET44_SESSION_UDP_ACTIVE:
+ ses1->expire = now + dm->timeouts.udp;
+ break;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses1->expire = now + dm->timeouts.tcp.transitory;
+ break;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses1->expire = now + dm->timeouts.tcp.established;
+ break;
+ }
- trace1:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b1->flags & VLIB_BUFFER_IS_TRACED)))
- {
- det44_in2out_trace_t *t =
- vlib_add_trace (vm, node, b1, sizeof (*t));
- t->sw_if_index = sw_if_index1;
- t->next_index = next1;
- t->session_index = ~0;
- if (ses1)
- t->session_index = ses1 - mp1->sessions;
- }
+ trace1:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b1->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ det44_in2out_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ t->sw_if_index = sw_if_index1;
+ t->next_index = next1;
+ t->session_index = ~0;
+ if (ses1)
+ t->session_index = ses1 - mp1->sessions;
+ }
- pkts_processed += next1 != DET44_IN2OUT_NEXT_DROP;
+ pkts_processed += next1 != DET44_IN2OUT_NEXT_DROP;
- /* verify speculative enqueues, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, next0, next1);
+ n_left_from -= 2;
+ next[0] = next0;
+ next[1] = next1;
+ next += 2;
+ }
+
+ while (n_left_from > 0)
+ {
+ vlib_buffer_t *b0;
+ u32 next0;
+ u32 sw_if_index0;
+ ip4_header_t *ip0;
+ ip_csum_t sum0;
+ ip4_address_t new_addr0, old_addr0;
+ u16 old_port0, new_port0, lo_port0, i0;
+ udp_header_t *udp0;
+ tcp_header_t *tcp0;
+ u32 proto0;
+ snat_det_out_key_t key0;
+ snat_det_map_t *mp0;
+ snat_det_session_t *ses0 = 0;
+ u32 rx_fib_index0;
+ icmp46_header_t *icmp0;
+
+ b0 = *b;
+ b++;
+ next0 = DET44_IN2OUT_NEXT_LOOKUP;
+
+ ip0 = vlib_buffer_get_current (b0);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+ if (PREDICT_FALSE (ip0->ttl == 1))
+ {
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace00;
}
- while (n_left_from > 0 && n_left_to_next > 0)
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
+
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
{
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0;
- u32 sw_if_index0;
- ip4_header_t *ip0;
- ip_csum_t sum0;
- ip4_address_t new_addr0, old_addr0;
- u16 old_port0, new_port0, lo_port0, i0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- u32 proto0;
- snat_det_out_key_t key0;
- snat_det_map_t *mp0;
- snat_det_session_t *ses0 = 0;
- u32 rx_fib_index0;
- icmp46_header_t *icmp0;
-
- /* 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 = DET44_IN2OUT_NEXT_LOOKUP;
-
- ip0 = vlib_buffer_get_current (b0);
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-
- if (PREDICT_FALSE (ip0->ttl == 1))
- {
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
- goto trace00;
- }
+ rx_fib_index0 =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
+ icmp0 = (icmp46_header_t *) udp0;
+
+ next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
+ goto trace00;
+ }
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ mp0 = snat_det_map_by_user (&ip0->src_address);
+ if (PREDICT_FALSE (!mp0))
+ {
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
+ goto trace00;
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- rx_fib_index0 =
- ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
- icmp0 = (icmp46_header_t *) udp0;
+ snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0);
- next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0,
- thread_index, &ses0, &mp0);
- goto trace00;
- }
+ key0.ext_host_addr = ip0->dst_address;
+ key0.ext_host_port = tcp0->dst;
- mp0 = snat_det_map_by_user (&ip0->src_address);
- if (PREDICT_FALSE (!mp0))
+ ses0 =
+ snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0);
+ if (PREDICT_FALSE (!ses0))
+ {
+ for (i0 = 0; i0 < mp0->ports_per_host; i0++)
{
- det44_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next0 = DET44_IN2OUT_NEXT_DROP;
- b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
- goto trace00;
+ key0.out_port = clib_host_to_net_u16 (lo_port0 +
+ ((i0 +
+ clib_net_to_host_u16
+ (tcp0->src)) %
+ mp0->ports_per_host));
+
+ if (snat_det_get_ses_by_out
+ (mp0, &ip0->src_address, key0.as_u64))
+ continue;
+
+ ses0 =
+ snat_det_ses_create (thread_index, mp0, &ip0->src_address,
+ tcp0->src, &key0);
+ break;
}
-
- snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0);
-
- key0.ext_host_addr = ip0->dst_address;
- key0.ext_host_port = tcp0->dst;
-
- ses0 =
- snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0);
if (PREDICT_FALSE (!ses0))
{
- for (i0 = 0; i0 < mp0->ports_per_host; i0++)
- {
- key0.out_port = clib_host_to_net_u16 (lo_port0 +
- ((i0 +
- clib_net_to_host_u16
- (tcp0->src)) %
- mp0->
- ports_per_host));
-
- if (snat_det_get_ses_by_out
- (mp0, &ip0->src_address, key0.as_u64))
- continue;
-
- ses0 =
- snat_det_ses_create (thread_index, mp0, &ip0->src_address,
- tcp0->src, &key0);
- break;
- }
- if (PREDICT_FALSE (!ses0))
- {
- /* too many sessions for user, send ICMP error packet */
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0,
- ICMP4_destination_unreachable,
- ICMP4_destination_unreachable_destination_unreachable_host,
- 0);
- next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
- goto trace00;
- }
+ /* too many sessions for user, send ICMP error packet */
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b0,
+ ICMP4_destination_unreachable,
+ ICMP4_destination_unreachable_destination_unreachable_host,
+ 0);
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace00;
}
+ }
+
+ old_port0 = udp0->src_port;
+ udp0->src_port = new_port0 = ses0->out.out_port;
- old_port0 = udp0->src_port;
- udp0->src_port = new_port0 = ses0->out.out_port;
+ old_addr0.as_u32 = ip0->src_address.as_u32;
+ ip0->src_address.as_u32 = new_addr0.as_u32;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
- old_addr0.as_u32 = ip0->src_address.as_u32;
- ip0->src_address.as_u32 = new_addr0.as_u32;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
+ ip4_header_t, src_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
- sum0 = ip0->checksum;
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (tcp0->flags & TCP_FLAG_SYN)
+ ses0->state = DET44_SESSION_TCP_SYN_SENT;
+ else if (tcp0->flags & TCP_FLAG_ACK
+ && ses0->state == DET44_SESSION_TCP_SYN_SENT)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
+ else if (tcp0->flags & TCP_FLAG_FIN
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_FIN_WAIT;
+ else if (tcp0->flags & TCP_FLAG_ACK
+ && ses0->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp0, ses0);
+ else if (tcp0->flags & TCP_FLAG_FIN
+ && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses0->state = DET44_SESSION_TCP_LAST_ACK;
+ else if (tcp0->flags == 0 && ses0->state == DET44_SESSION_UNKNOWN)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
+
+ sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
ip4_header_t,
- src_address /* changed member */ );
- ip0->checksum = ip_csum_fold (sum0);
-
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
- {
- if (tcp0->flags & TCP_FLAG_SYN)
- ses0->state = DET44_SESSION_TCP_SYN_SENT;
- else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == DET44_SESSION_TCP_SYN_SENT)
- ses0->state = DET44_SESSION_TCP_ESTABLISHED;
- else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
- ses0->state = DET44_SESSION_TCP_FIN_WAIT;
- else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == DET44_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (mp0, ses0);
- else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT)
- ses0->state = DET44_SESSION_TCP_LAST_ACK;
- else if (tcp0->flags == 0
- && ses0->state == DET44_SESSION_UNKNOWN)
- ses0->state = DET44_SESSION_TCP_ESTABLISHED;
-
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- mss_clamping (dm->mss_clamping, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else
- {
- ses0->state = DET44_SESSION_UDP_ACTIVE;
-
- if (PREDICT_FALSE (udp0->checksum))
- {
- sum0 = udp0->checksum;
- sum0 =
- ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 =
- ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- udp0->checksum = ip_csum_fold (sum0);
- }
- }
-
- switch (ses0->state)
- {
- case DET44_SESSION_UDP_ACTIVE:
- ses0->expire = now + dm->timeouts.udp;
- break;
- case DET44_SESSION_TCP_SYN_SENT:
- case DET44_SESSION_TCP_FIN_WAIT:
- case DET44_SESSION_TCP_CLOSE_WAIT:
- case DET44_SESSION_TCP_LAST_ACK:
- ses0->expire = now + dm->timeouts.tcp.transitory;
- break;
- case DET44_SESSION_TCP_ESTABLISHED:
- ses0->expire = now + dm->timeouts.tcp.established;
- break;
- }
+ dst_address /* changed member */ );
+ sum0 = ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ mss_clamping (dm->mss_clamping, tcp0, &sum0);
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ else
+ {
+ ses0->state = DET44_SESSION_UDP_ACTIVE;
- trace00:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ if (PREDICT_FALSE (udp0->checksum))
{
- det44_in2out_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->session_index = ~0;
- if (ses0)
- t->session_index = ses0 - mp0->sessions;
+ sum0 = udp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
+ ip4_header_t,
+ dst_address /* changed member */ );
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp0->checksum = ip_csum_fold (sum0);
}
+ }
- pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP;
+ switch (ses0->state)
+ {
+ case DET44_SESSION_UDP_ACTIVE:
+ ses0->expire = now + dm->timeouts.udp;
+ break;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses0->expire = now + dm->timeouts.tcp.transitory;
+ break;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses0->expire = now + dm->timeouts.tcp.established;
+ break;
+ }
- /* 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);
+ trace00:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ det44_in2out_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (ses0)
+ t->session_index = ses0 - mp0->sessions;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP;
+
+ n_left_from--;
+ next[0] = next0;
+ next++;
}
+ vlib_buffer_enqueue_to_next (vm, node, from, (u16 *) nexts,
+ frame->n_vectors);
+
vlib_node_increment_counter (vm, dm->in2out_node_index,
DET44_IN2OUT_ERROR_IN2OUT_PACKETS,
pkts_processed);
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- u32 n_left_from, *from, *to_next;
- det44_out2in_next_t next_index;
+ u32 n_left_from, *from;
u32 pkts_processed = 0;
det44_main_t *dm = &det44_main;
u32 thread_index = vm->thread_index;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
- while (n_left_from > 0)
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
+ u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
+ vlib_get_buffers (vm, from, b, n_left_from);
+
+ while (n_left_from >= 2)
{
- u32 n_left_to_next;
+ vlib_buffer_t *b0, *b1;
+ u32 next0 = DET44_OUT2IN_NEXT_LOOKUP;
+ u32 next1 = DET44_OUT2IN_NEXT_LOOKUP;
+ u32 sw_if_index0, sw_if_index1;
+ ip4_header_t *ip0, *ip1;
+ ip_csum_t sum0, sum1;
+ ip4_address_t new_addr0, old_addr0, new_addr1, old_addr1;
+ u16 new_port0, old_port0, old_port1, new_port1;
+ udp_header_t *udp0, *udp1;
+ tcp_header_t *tcp0, *tcp1;
+ u32 proto0, proto1;
+ snat_det_out_key_t key0, key1;
+ snat_det_map_t *mp0, *mp1;
+ snat_det_session_t *ses0 = 0, *ses1 = 0;
+ u32 rx_fib_index0, rx_fib_index1;
+ icmp46_header_t *icmp0, *icmp1;
+
+ b0 = *b;
+ b++;
+ b1 = *b;
+ b++;
+
+ /* Prefetch next iteration. */
+ if (PREDICT_TRUE (n_left_from >= 4))
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = *b;
+ p3 = *(b + 1);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ ip0 = vlib_buffer_get_current (b0);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
- while (n_left_from >= 4 && n_left_to_next >= 2)
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+ if (PREDICT_FALSE (ip0->ttl == 1))
{
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- u32 next0 = DET44_OUT2IN_NEXT_LOOKUP;
- u32 next1 = DET44_OUT2IN_NEXT_LOOKUP;
- u32 sw_if_index0, sw_if_index1;
- ip4_header_t *ip0, *ip1;
- ip_csum_t sum0, sum1;
- ip4_address_t new_addr0, old_addr0, new_addr1, old_addr1;
- u16 new_port0, old_port0, old_port1, new_port1;
- udp_header_t *udp0, *udp1;
- tcp_header_t *tcp0, *tcp1;
- u32 proto0, proto1;
- snat_det_out_key_t key0, key1;
- snat_det_map_t *mp0, *mp1;
- snat_det_session_t *ses0 = 0, *ses1 = 0;
- u32 rx_fib_index0, rx_fib_index1;
- icmp46_header_t *icmp0, *icmp1;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t *p2, *p3;
-
- p2 = vlib_get_buffer (vm, from[2]);
- p3 = vlib_get_buffer (vm, from[3]);
-
- vlib_prefetch_buffer_header (p2, LOAD);
- vlib_prefetch_buffer_header (p3, LOAD);
-
- CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD);
- }
-
- /* speculatively enqueue b0 and b1 to the current next frame */
- to_next[0] = bi0 = from[0];
- to_next[1] = bi1 = from[1];
- from += 2;
- to_next += 2;
- n_left_from -= 2;
- n_left_to_next -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- ip0 = vlib_buffer_get_current (b0);
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-
- if (PREDICT_FALSE (ip0->ttl == 1))
- {
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next0 = DET44_OUT2IN_NEXT_ICMP_ERROR;
- goto trace0;
- }
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next0 = DET44_OUT2IN_NEXT_ICMP_ERROR;
+ goto trace0;
+ }
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- rx_fib_index0 =
- ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
- icmp0 = (icmp46_header_t *) udp0;
-
- next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0,
- thread_index, &ses0, &mp0);
- goto trace0;
- }
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ rx_fib_index0 =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
+ icmp0 = (icmp46_header_t *) udp0;
+
+ next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
+ goto trace0;
+ }
- key0.ext_host_addr = ip0->src_address;
- key0.ext_host_port = tcp0->src;
- key0.out_port = tcp0->dst;
+ key0.ext_host_addr = ip0->src_address;
+ key0.ext_host_port = tcp0->src;
+ key0.out_port = tcp0->dst;
- mp0 = snat_det_map_by_out (&ip0->dst_address);
- if (PREDICT_FALSE (!mp0))
- {
- det44_log_info ("unknown dst address: %U",
- format_ip4_address, &ip0->dst_address);
- next0 = DET44_OUT2IN_NEXT_DROP;
- b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
- goto trace0;
- }
+ mp0 = snat_det_map_by_out (&ip0->dst_address);
+ if (PREDICT_FALSE (!mp0))
+ {
+ det44_log_info ("unknown dst address: %U",
+ format_ip4_address, &ip0->dst_address);
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
+ goto trace0;
+ }
- snat_det_reverse (mp0, &ip0->dst_address,
- clib_net_to_host_u16 (tcp0->dst), &new_addr0);
+ snat_det_reverse (mp0, &ip0->dst_address,
+ clib_net_to_host_u16 (tcp0->dst), &new_addr0);
- ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64);
- if (PREDICT_FALSE (!ses0))
- {
- det44_log_info ("no match src %U:%d dst %U:%d for user %U",
- format_ip4_address, &ip0->src_address,
- clib_net_to_host_u16 (tcp0->src),
- format_ip4_address, &ip0->dst_address,
- clib_net_to_host_u16 (tcp0->dst),
- format_ip4_address, &new_addr0);
- next0 = DET44_OUT2IN_NEXT_DROP;
- b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
- goto trace0;
- }
- old_port0 = udp0->dst_port;
- udp0->dst_port = new_port0 = ses0->in_port;
+ ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64);
+ if (PREDICT_FALSE (!ses0))
+ {
+ det44_log_info ("no match src %U:%d dst %U:%d for user %U",
+ format_ip4_address, &ip0->src_address,
+ clib_net_to_host_u16 (tcp0->src),
+ format_ip4_address, &ip0->dst_address,
+ clib_net_to_host_u16 (tcp0->dst),
+ format_ip4_address, &new_addr0);
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
+ goto trace0;
+ }
+ old_port0 = udp0->dst_port;
+ udp0->dst_port = new_port0 = ses0->in_port;
+
+ old_addr0 = ip0->dst_address;
+ ip0->dst_address = new_addr0;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
- old_addr0 = ip0->dst_address;
- ip0->dst_address = new_addr0;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
+ ip4_header_t, dst_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
- sum0 = ip0->checksum;
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (tcp0->flags & TCP_FLAG_FIN
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_CLOSE_WAIT;
+ else if (tcp0->flags & TCP_FLAG_ACK
+ && ses0->state == DET44_SESSION_TCP_LAST_ACK)
+ snat_det_ses_close (mp0, ses0);
+
+ sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
ip4_header_t,
dst_address /* changed member */ );
- ip0->checksum = ip_csum_fold (sum0);
-
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
- {
- if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
- ses0->state = DET44_SESSION_TCP_CLOSE_WAIT;
- else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == DET44_SESSION_TCP_LAST_ACK)
- snat_det_ses_close (mp0, ses0);
-
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else if (udp0->checksum)
- {
- sum0 = udp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- udp0->checksum = ip_csum_fold (sum0);
- }
+ sum0 = ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ else if (udp0->checksum)
+ {
+ sum0 = udp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
+ ip4_header_t,
+ dst_address /* changed member */ );
+ sum0 = ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp0->checksum = ip_csum_fold (sum0);
+ }
- trace0:
+ trace0:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- det44_out2in_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->session_index = ~0;
- if (ses0)
- t->session_index = ses0 - mp0->sessions;
- }
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ det44_out2in_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (ses0)
+ t->session_index = ses0 - mp0->sessions;
+ }
- pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP;
+ pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP;
- b1 = vlib_get_buffer (vm, bi1);
+ ip1 = vlib_buffer_get_current (b1);
+ udp1 = ip4_next_header (ip1);
+ tcp1 = (tcp_header_t *) udp1;
- ip1 = vlib_buffer_get_current (b1);
- udp1 = ip4_next_header (ip1);
- tcp1 = (tcp_header_t *) udp1;
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ if (PREDICT_FALSE (ip1->ttl == 1))
+ {
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next1 = DET44_OUT2IN_NEXT_ICMP_ERROR;
+ goto trace1;
+ }
- if (PREDICT_FALSE (ip1->ttl == 1))
- {
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next1 = DET44_OUT2IN_NEXT_ICMP_ERROR;
- goto trace1;
- }
+ proto1 = ip_proto_to_nat_proto (ip1->protocol);
- proto1 = ip_proto_to_nat_proto (ip1->protocol);
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
+ {
+ rx_fib_index1 =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index1);
+ icmp1 = (icmp46_header_t *) udp1;
+
+ next1 = det44_icmp_out2in (b1, ip1, icmp1, sw_if_index1,
+ rx_fib_index1, node, next1,
+ thread_index, &ses1, &mp1);
+ goto trace1;
+ }
- if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
- {
- rx_fib_index1 =
- ip4_fib_table_get_index_for_sw_if_index (sw_if_index1);
- icmp1 = (icmp46_header_t *) udp1;
-
- next1 = det44_icmp_out2in (b1, ip1, icmp1, sw_if_index1,
- rx_fib_index1, node, next1,
- thread_index, &ses1, &mp1);
- goto trace1;
- }
+ key1.ext_host_addr = ip1->src_address;
+ key1.ext_host_port = tcp1->src;
+ key1.out_port = tcp1->dst;
- key1.ext_host_addr = ip1->src_address;
- key1.ext_host_port = tcp1->src;
- key1.out_port = tcp1->dst;
+ mp1 = snat_det_map_by_out (&ip1->dst_address);
+ if (PREDICT_FALSE (!mp1))
+ {
+ det44_log_info ("unknown dst address: %U",
+ format_ip4_address, &ip1->dst_address);
+ next1 = DET44_OUT2IN_NEXT_DROP;
+ b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
+ goto trace1;
+ }
- mp1 = snat_det_map_by_out (&ip1->dst_address);
- if (PREDICT_FALSE (!mp1))
- {
- det44_log_info ("unknown dst address: %U",
- format_ip4_address, &ip1->dst_address);
- next1 = DET44_OUT2IN_NEXT_DROP;
- b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
- goto trace1;
- }
+ snat_det_reverse (mp1, &ip1->dst_address,
+ clib_net_to_host_u16 (tcp1->dst), &new_addr1);
- snat_det_reverse (mp1, &ip1->dst_address,
- clib_net_to_host_u16 (tcp1->dst), &new_addr1);
+ ses1 = snat_det_get_ses_by_out (mp1, &new_addr1, key1.as_u64);
+ if (PREDICT_FALSE (!ses1))
+ {
+ det44_log_info ("no match src %U:%d dst %U:%d for user %U",
+ format_ip4_address, &ip1->src_address,
+ clib_net_to_host_u16 (tcp1->src),
+ format_ip4_address, &ip1->dst_address,
+ clib_net_to_host_u16 (tcp1->dst),
+ format_ip4_address, &new_addr1);
+ next1 = DET44_OUT2IN_NEXT_DROP;
+ b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
+ goto trace1;
+ }
+ old_port1 = udp1->dst_port;
+ udp1->dst_port = new_port1 = ses1->in_port;
- ses1 = snat_det_get_ses_by_out (mp1, &new_addr1, key1.as_u64);
- if (PREDICT_FALSE (!ses1))
- {
- det44_log_info ("no match src %U:%d dst %U:%d for user %U",
- format_ip4_address, &ip1->src_address,
- clib_net_to_host_u16 (tcp1->src),
- format_ip4_address, &ip1->dst_address,
- clib_net_to_host_u16 (tcp1->dst),
- format_ip4_address, &new_addr1);
- next1 = DET44_OUT2IN_NEXT_DROP;
- b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
- goto trace1;
- }
- old_port1 = udp1->dst_port;
- udp1->dst_port = new_port1 = ses1->in_port;
+ old_addr1 = ip1->dst_address;
+ ip1->dst_address = new_addr1;
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
- old_addr1 = ip1->dst_address;
- ip1->dst_address = new_addr1;
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
+ sum1 = ip1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
+ ip4_header_t, dst_address /* changed member */ );
+ ip1->checksum = ip_csum_fold (sum1);
- sum1 = ip1->checksum;
+ if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
+ {
+ if (tcp1->flags & TCP_FLAG_FIN
+ && ses1->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses1->state = DET44_SESSION_TCP_CLOSE_WAIT;
+ else if (tcp1->flags & TCP_FLAG_ACK
+ && ses1->state == DET44_SESSION_TCP_LAST_ACK)
+ snat_det_ses_close (mp1, ses1);
+
+ sum1 = tcp1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
+ ip4_header_t,
+ dst_address /* changed member */ );
+ sum1 = ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ tcp1->checksum = ip_csum_fold (sum1);
+ }
+ else if (udp1->checksum)
+ {
+ sum1 = udp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
ip4_header_t,
dst_address /* changed member */ );
- ip1->checksum = ip_csum_fold (sum1);
+ sum1 = ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp1->checksum = ip_csum_fold (sum1);
+ }
- if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
- {
- if (tcp1->flags & TCP_FLAG_FIN
- && ses1->state == DET44_SESSION_TCP_ESTABLISHED)
- ses1->state = DET44_SESSION_TCP_CLOSE_WAIT;
- else if (tcp1->flags & TCP_FLAG_ACK
- && ses1->state == DET44_SESSION_TCP_LAST_ACK)
- snat_det_ses_close (mp1, ses1);
-
- sum1 = tcp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum1 = ip_csum_update (sum1, old_port1, new_port1,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- tcp1->checksum = ip_csum_fold (sum1);
- }
- else if (udp1->checksum)
- {
- sum1 = udp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum1 = ip_csum_update (sum1, old_port1, new_port1,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- udp1->checksum = ip_csum_fold (sum1);
- }
+ trace1:
- trace1:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b1->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ det44_out2in_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ t->sw_if_index = sw_if_index1;
+ t->next_index = next1;
+ t->session_index = ~0;
+ if (ses1)
+ t->session_index = ses1 - mp1->sessions;
+ }
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b1->flags & VLIB_BUFFER_IS_TRACED)))
- {
- det44_out2in_trace_t *t =
- vlib_add_trace (vm, node, b1, sizeof (*t));
- t->sw_if_index = sw_if_index1;
- t->next_index = next1;
- t->session_index = ~0;
- if (ses1)
- t->session_index = ses1 - mp1->sessions;
- }
+ pkts_processed += next1 != DET44_OUT2IN_NEXT_DROP;
- pkts_processed += next1 != DET44_OUT2IN_NEXT_DROP;
+ n_left_from -= 2;
+ next[0] = next0;
+ next[1] = next1;
+ next += 2;
+ }
- /* verify speculative enqueues, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, next0, next1);
+ while (n_left_from > 0)
+ {
+ vlib_buffer_t *b0;
+ u32 next0 = DET44_OUT2IN_NEXT_LOOKUP;
+ u32 sw_if_index0;
+ ip4_header_t *ip0;
+ ip_csum_t sum0;
+ ip4_address_t new_addr0, old_addr0;
+ u16 new_port0, old_port0;
+ udp_header_t *udp0;
+ tcp_header_t *tcp0;
+ u32 proto0;
+ snat_det_out_key_t key0;
+ snat_det_map_t *mp0;
+ snat_det_session_t *ses0 = 0;
+ u32 rx_fib_index0;
+ icmp46_header_t *icmp0;
+
+ b0 = *b;
+ b++;
+
+ ip0 = vlib_buffer_get_current (b0);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+ if (PREDICT_FALSE (ip0->ttl == 1))
+ {
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next0 = DET44_OUT2IN_NEXT_ICMP_ERROR;
+ goto trace00;
}
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0 = DET44_OUT2IN_NEXT_LOOKUP;
- u32 sw_if_index0;
- ip4_header_t *ip0;
- ip_csum_t sum0;
- ip4_address_t new_addr0, old_addr0;
- u16 new_port0, old_port0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- u32 proto0;
- snat_det_out_key_t key0;
- snat_det_map_t *mp0;
- snat_det_session_t *ses0 = 0;
- u32 rx_fib_index0;
- icmp46_header_t *icmp0;
-
- /* 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);
-
- ip0 = vlib_buffer_get_current (b0);
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-
- if (PREDICT_FALSE (ip0->ttl == 1))
- {
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next0 = DET44_OUT2IN_NEXT_ICMP_ERROR;
- goto trace00;
- }
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ rx_fib_index0 =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
+ icmp0 = (icmp46_header_t *) udp0;
+
+ next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
+ goto trace00;
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- rx_fib_index0 =
- ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
- icmp0 = (icmp46_header_t *) udp0;
-
- next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0,
- thread_index, &ses0, &mp0);
- goto trace00;
- }
+ key0.ext_host_addr = ip0->src_address;
+ key0.ext_host_port = tcp0->src;
+ key0.out_port = tcp0->dst;
- key0.ext_host_addr = ip0->src_address;
- key0.ext_host_port = tcp0->src;
- key0.out_port = tcp0->dst;
+ mp0 = snat_det_map_by_out (&ip0->dst_address);
+ if (PREDICT_FALSE (!mp0))
+ {
+ det44_log_info ("unknown dst address: %U",
+ format_ip4_address, &ip0->dst_address);
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
+ goto trace00;
+ }
- mp0 = snat_det_map_by_out (&ip0->dst_address);
- if (PREDICT_FALSE (!mp0))
- {
- det44_log_info ("unknown dst address: %U",
- format_ip4_address, &ip0->dst_address);
- next0 = DET44_OUT2IN_NEXT_DROP;
- b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
- goto trace00;
- }
+ snat_det_reverse (mp0, &ip0->dst_address,
+ clib_net_to_host_u16 (tcp0->dst), &new_addr0);
- snat_det_reverse (mp0, &ip0->dst_address,
- clib_net_to_host_u16 (tcp0->dst), &new_addr0);
+ ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64);
+ if (PREDICT_FALSE (!ses0))
+ {
+ det44_log_info ("no match src %U:%d dst %U:%d for user %U",
+ format_ip4_address, &ip0->src_address,
+ clib_net_to_host_u16 (tcp0->src),
+ format_ip4_address, &ip0->dst_address,
+ clib_net_to_host_u16 (tcp0->dst),
+ format_ip4_address, &new_addr0);
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
+ goto trace00;
+ }
+ old_port0 = udp0->dst_port;
+ udp0->dst_port = new_port0 = ses0->in_port;
- ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64);
- if (PREDICT_FALSE (!ses0))
- {
- det44_log_info ("no match src %U:%d dst %U:%d for user %U",
- format_ip4_address, &ip0->src_address,
- clib_net_to_host_u16 (tcp0->src),
- format_ip4_address, &ip0->dst_address,
- clib_net_to_host_u16 (tcp0->dst),
- format_ip4_address, &new_addr0);
- next0 = DET44_OUT2IN_NEXT_DROP;
- b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
- goto trace00;
- }
- old_port0 = udp0->dst_port;
- udp0->dst_port = new_port0 = ses0->in_port;
+ old_addr0 = ip0->dst_address;
+ ip0->dst_address = new_addr0;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
- old_addr0 = ip0->dst_address;
- ip0->dst_address = new_addr0;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
+ ip4_header_t, dst_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
- sum0 = ip0->checksum;
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (tcp0->flags & TCP_FLAG_FIN
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_CLOSE_WAIT;
+ else if (tcp0->flags & TCP_FLAG_ACK
+ && ses0->state == DET44_SESSION_TCP_LAST_ACK)
+ snat_det_ses_close (mp0, ses0);
+
+ sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
ip4_header_t,
dst_address /* changed member */ );
- ip0->checksum = ip_csum_fold (sum0);
-
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
- {
- if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
- ses0->state = DET44_SESSION_TCP_CLOSE_WAIT;
- else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == DET44_SESSION_TCP_LAST_ACK)
- snat_det_ses_close (mp0, ses0);
-
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else if (udp0->checksum)
- {
- sum0 = udp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- udp0->checksum = ip_csum_fold (sum0);
- }
-
- trace00:
-
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- det44_out2in_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->session_index = ~0;
- if (ses0)
- t->session_index = ses0 - mp0->sessions;
- }
+ sum0 = ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ else if (udp0->checksum)
+ {
+ sum0 = udp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
+ ip4_header_t,
+ dst_address /* changed member */ );
+ sum0 = ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp0->checksum = ip_csum_fold (sum0);
+ }
- pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP;
+ trace00:
- /* 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 (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ det44_out2in_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (ses0)
+ t->session_index = ses0 - mp0->sessions;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP;
+
+ n_left_from--;
+ next[0] = next0;
+ next++;
}
+ vlib_buffer_enqueue_to_next (vm, node, from, (u16 *) nexts,
+ frame->n_vectors);
+
vlib_node_increment_counter (vm, dm->out2in_node_index,
DET44_OUT2IN_ERROR_OUT2IN_PACKETS,
Code Review / vpp.git / commitdiff