vlib_frame_t * frame,
int is_multi_worker)
{
- u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
- nat_next_t next_index;
+ u32 n_left_from, *from, pkts_processed = 0, stats_node_index;
snat_main_t *sm = &snat_main;
f64 now = vlib_time_now (vm);
u32 thread_index = vm->thread_index;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
+
+ 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 > 0)
{
- u32 n_left_to_next;
+ vlib_buffer_t *b0;
+ u32 sw_if_index0, rx_fib_index0, proto0, old_addr0, new_addr0;
+ u16 old_port0, new_port0;
+ ip4_header_t *ip0;
+ udp_header_t *udp0;
+ tcp_header_t *tcp0;
+ snat_session_t *s0 = 0;
+ clib_bihash_kv_16_8_t kv0, value0;
+ ip_csum_t sum0;
+
+ b0 = *b;
+ next[0] = vnet_buffer2 (b0)->nat.arc_next;
+
+ vnet_buffer (b0)->snat.flags = 0;
+ ip0 = vlib_buffer_get_current (b0);
+
+ 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 (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);
+ next[0] = NAT_NEXT_ICMP_ERROR;
+ goto trace0;
+ }
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- while (n_left_from > 0 && n_left_to_next > 0)
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0, sw_if_index0, rx_fib_index0, proto0, old_addr0,
- new_addr0;
- u16 old_port0, new_port0;
- ip4_header_t *ip0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- snat_session_t *s0 = 0;
- clib_bihash_kv_16_8_t kv0, value0;
- 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 = vnet_buffer2 (b0)->nat.arc_next;
-
- vnet_buffer (b0)->snat.flags = 0;
- ip0 = vlib_buffer_get_current (b0);
-
- 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 (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 = NAT_NEXT_ICMP_ERROR;
- goto trace0;
- }
+ next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
+ goto trace0;
+ }
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
+ goto trace0;
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
+ init_ed_k (&kv0, ip0->dst_address,
+ vnet_buffer (b0)->ip.reass.l4_dst_port, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
+ ip0->protocol);
+
+ /* there is a stashed index in vnet_buffer2 from handoff node,
+ * see if we can use it */
+ if (is_multi_worker
+ &&
+ PREDICT_TRUE (!pool_is_free_index
+ (tsm->sessions,
+ vnet_buffer2 (b0)->nat.ed_out2in_nat_session_index)))
+ {
+ s0 = pool_elt_at_index (tsm->sessions,
+ vnet_buffer2 (b0)->
+ nat.ed_out2in_nat_session_index);
+ if (PREDICT_TRUE
+ (s0->out2in.addr.as_u32 == ip0->dst_address.as_u32
+ && s0->out2in.port == vnet_buffer (b0)->ip.reass.l4_dst_port
+ && s0->nat_proto == ip_proto_to_nat_proto (ip0->protocol)
+ && s0->out2in.fib_index == rx_fib_index0
+ && s0->ext_host_addr.as_u32 == ip0->src_address.as_u32
+ && s0->ext_host_port ==
+ vnet_buffer (b0)->ip.reass.l4_src_port))
{
- next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
- goto trace0;
+ /* yes, this is the droid we're looking for */
+ goto skip_lookup;
}
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
- goto trace0;
- }
+ if (clib_bihash_search_16_8 (&sm->out2in_ed, &kv0, &value0))
+ {
+ next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
+ goto trace0;
+ }
+ ASSERT (thread_index == ed_value_get_thread_index (&value0));
+ s0 =
+ pool_elt_at_index (tsm->sessions,
+ ed_value_get_session_index (&value0));
- init_ed_k (&kv0, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
- ip0->protocol);
-
- /* there is a stashed index in vnet_buffer2 from handoff node,
- * see if we can use it */
- if (is_multi_worker && PREDICT_TRUE
- (!pool_is_free_index
- (tsm->sessions,
- vnet_buffer2 (b0)->nat.ed_out2in_nat_session_index)))
+ skip_lookup:
+ if (s0->tcp_closed_timestamp)
+ {
+ if (now >= s0->tcp_closed_timestamp)
{
- s0 = pool_elt_at_index (tsm->sessions,
- vnet_buffer2 (b0)->
- nat.ed_out2in_nat_session_index);
- if (PREDICT_TRUE
- (s0->out2in.addr.as_u32 == ip0->dst_address.as_u32
- && s0->out2in.port ==
- vnet_buffer (b0)->ip.reass.l4_dst_port
- && s0->nat_proto == ip_proto_to_nat_proto (ip0->protocol)
- && s0->out2in.fib_index == rx_fib_index0
- && s0->ext_host_addr.as_u32 == ip0->src_address.as_u32
- && s0->ext_host_port ==
- vnet_buffer (b0)->ip.reass.l4_src_port))
- {
- /* yes, this is the droid we're looking for */
- goto skip_lookup;
- }
+ // session is closed, go slow path
+ next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
}
-
- if (clib_bihash_search_16_8 (&sm->out2in_ed, &kv0, &value0))
+ else
{
- next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
- goto trace0;
+ // session in transitory timeout, drop
+ b0->error = node->errors[NAT_OUT2IN_ED_ERROR_TCP_CLOSED];
+ next[0] = NAT_NEXT_DROP;
}
- ASSERT (thread_index == ed_value_get_thread_index (&value0));
- s0 =
- pool_elt_at_index (tsm->sessions,
- ed_value_get_session_index (&value0));
+ goto trace0;
+ }
- skip_lookup:
- if (s0->tcp_closed_timestamp)
- {
- if (now >= s0->tcp_closed_timestamp)
- {
- // session is closed, go slow path
- next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
- }
- else
- {
- // session in transitory timeout, drop
- b0->error = node->errors[NAT_OUT2IN_ED_ERROR_TCP_CLOSED];
- next0 = NAT_NEXT_DROP;
- }
- goto trace0;
- }
+ // drop if session expired
+ u64 sess_timeout_time;
+ sess_timeout_time =
+ s0->last_heard + (f64) nat44_session_get_timeout (sm, s0);
+ if (now >= sess_timeout_time)
+ {
+ // session is closed, go slow path
+ nat_free_session_data (sm, s0, thread_index, 0);
+ nat_ed_session_delete (sm, s0, thread_index, 1);
+ next[0] = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
+ goto trace0;
+ }
+ //
- // drop if session expired
- u64 sess_timeout_time;
- sess_timeout_time = s0->last_heard +
- (f64) nat44_session_get_timeout (sm, s0);
- if (now >= sess_timeout_time)
- {
- // session is closed, go slow path
- nat_free_session_data (sm, s0, thread_index, 0);
- nat_ed_session_delete (sm, s0, thread_index, 1);
- next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH;
- goto trace0;
- }
- //
+ old_addr0 = ip0->dst_address.as_u32;
+ new_addr0 = ip0->dst_address.as_u32 = s0->in2out.addr.as_u32;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index;
- old_addr0 = ip0->dst_address.as_u32;
- new_addr0 = ip0->dst_address.as_u32 = s0->in2out.addr.as_u32;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index;
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
+ s0->ext_host_nat_addr.as_u32, ip4_header_t,
+ src_address);
+ ip0->checksum = ip_csum_fold (sum0);
- sum0 = ip0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
- dst_address);
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
- s0->ext_host_nat_addr.as_u32, ip4_header_t,
- src_address);
- ip0->checksum = ip_csum_fold (sum0);
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_dst_port;
- old_port0 = vnet_buffer (b0)->ip.reass.l4_dst_port;
-
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
- {
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
- {
- new_port0 = udp0->dst_port = s0->in2out.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 (is_twice_nat_session (s0))
- {
- sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
- s0->ext_host_nat_addr.as_u32,
- ip4_header_t, dst_address);
- sum0 =
- ip_csum_update (sum0,
- vnet_buffer (b0)->ip.
- reass.l4_src_port,
- s0->ext_host_nat_port, ip4_header_t,
- length);
- tcp0->src_port = s0->ext_host_nat_port;
- ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
- }
- tcp0->checksum = ip_csum_fold (sum0);
- }
- tcp_packets++;
- if (nat44_set_tcp_session_state_o2i
- (sm, now, s0,
- vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags,
- vnet_buffer (b0)->ip.reass.tcp_ack_number,
- vnet_buffer (b0)->ip.reass.tcp_seq_number, thread_index))
- goto trace0;
- }
- else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
- && udp0->checksum)
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
new_port0 = udp0->dst_port = s0->in2out.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);
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ 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 (is_twice_nat_session (s0))
{
sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
s0->ext_host_nat_addr.as_u32,
vnet_buffer (b0)->ip.reass.l4_src_port,
s0->ext_host_nat_port, ip4_header_t,
length);
- udp0->src_port = s0->ext_host_nat_port;
+ tcp0->src_port = s0->ext_host_nat_port;
ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
}
- udp0->checksum = ip_csum_fold (sum0);
- udp_packets++;
+ tcp0->checksum = ip_csum_fold (sum0);
}
- else
+ tcp_packets++;
+ if (nat44_set_tcp_session_state_o2i
+ (sm, now, s0,
+ vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags,
+ vnet_buffer (b0)->ip.reass.tcp_ack_number,
+ vnet_buffer (b0)->ip.reass.tcp_seq_number, thread_index))
+ goto trace0;
+ }
+ else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
+ && udp0->checksum)
+ {
+ new_port0 = udp0->dst_port = s0->in2out.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);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ sum0 =
+ ip_csum_update (sum0, ip0->src_address.as_u32,
+ s0->ext_host_nat_addr.as_u32, ip4_header_t,
+ dst_address);
+ sum0 =
+ ip_csum_update (sum0, vnet_buffer (b0)->ip.reass.l4_src_port,
+ s0->ext_host_nat_port, ip4_header_t, length);
+ udp0->src_port = s0->ext_host_nat_port;
+ ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
+ }
+ udp0->checksum = ip_csum_fold (sum0);
+ udp_packets++;
+ }
+ else
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ new_port0 = udp0->dst_port = s0->in2out.port;
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
{
- new_port0 = udp0->dst_port = s0->in2out.port;
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- {
- udp0->src_port = s0->ext_host_nat_port;
- ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
- }
+ udp0->src_port = s0->ext_host_nat_port;
+ ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
}
- udp_packets++;
}
+ udp_packets++;
+ }
- /* 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_ed_out2in_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->is_slow_path = 0;
-
- if (s0)
- t->session_index = s0 - tsm->sessions;
- else
- t->session_index = ~0;
- }
+ /* 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);
- pkts_processed += next0 == vnet_buffer2 (b0)->nat.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);
+ trace0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat44_ed_out2in_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next[0];
+ t->is_slow_path = 0;
+
+ if (s0)
+ t->session_index = s0 - tsm->sessions;
+ else
+ t->session_index = ~0;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ pkts_processed += next[0] == vnet_buffer2 (b0)->nat.arc_next;
+
+ n_left_from--;
+ next++;
+ b++;
}
+ vlib_buffer_enqueue_to_next (vm, node, from, (u16 *) nexts,
+ frame->n_vectors);
+
vlib_node_increment_counter (vm, stats_node_index,
NAT_OUT2IN_ED_ERROR_OUT2IN_PACKETS,
pkts_processed);
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
- nat_next_t next_index;
+ u32 n_left_from, *from, pkts_processed = 0, stats_node_index;
snat_main_t *sm = &snat_main;
f64 now = vlib_time_now (vm);
u32 thread_index = vm->thread_index;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
+
+ 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 > 0)
{
- u32 n_left_to_next;
+ vlib_buffer_t *b0;
+ u32 sw_if_index0, rx_fib_index0, proto0, old_addr0, new_addr0;
+ u16 old_port0, new_port0;
+ ip4_header_t *ip0;
+ udp_header_t *udp0;
+ tcp_header_t *tcp0;
+ icmp46_header_t *icmp0;
+ snat_session_t *s0 = 0;
+ clib_bihash_kv_16_8_t kv0, value0;
+ ip_csum_t sum0;
+ lb_nat_type_t lb_nat0;
+ twice_nat_type_t twice_nat0;
+ u8 identity_nat0;
+ ip4_address_t sm_addr;
+ u16 sm_port;
+ u32 sm_fib_index;
+
+ b0 = *b;
+ next[0] = vnet_buffer2 (b0)->nat.arc_next;
+
+ vnet_buffer (b0)->snat.flags = 0;
+ ip0 = vlib_buffer_get_current (b0);
+
+ 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 (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);
+ next[0] = NAT_NEXT_ICMP_ERROR;
+ goto trace0;
+ }
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+ icmp0 = (icmp46_header_t *) udp0;
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- while (n_left_from > 0 && n_left_to_next > 0)
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0, sw_if_index0, rx_fib_index0, proto0, old_addr0,
- new_addr0;
- u16 old_port0, new_port0;
- ip4_header_t *ip0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- icmp46_header_t *icmp0;
- snat_session_t *s0 = 0;
- clib_bihash_kv_16_8_t kv0, value0;
- ip_csum_t sum0;
- lb_nat_type_t lb_nat0;
- twice_nat_type_t twice_nat0;
- u8 identity_nat0;
- ip4_address_t sm_addr;
- u16 sm_port;
- u32 sm_fib_index;
-
- /* 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 = vnet_buffer2 (b0)->nat.arc_next;
-
- vnet_buffer (b0)->snat.flags = 0;
- ip0 = vlib_buffer_get_current (b0);
-
- 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 (ip0->ttl == 1))
+ s0 =
+ nat44_ed_out2in_unknown_proto (sm, b0, ip0, rx_fib_index0,
+ thread_index, now, vm, node);
+ if (!sm->forwarding_enabled)
{
- 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 = NAT_NEXT_ICMP_ERROR;
- goto trace0;
+ if (!s0)
+ next[0] = NAT_NEXT_DROP;
}
+ other_packets++;
+ goto trace0;
+ }
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
- icmp0 = (icmp46_header_t *) udp0;
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ next[0] = icmp_out2in_ed_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next[0], now, thread_index, &s0);
+ icmp_packets++;
+ goto trace0;
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
- {
- s0 =
- nat44_ed_out2in_unknown_proto (sm, b0, ip0, rx_fib_index0,
- thread_index, now, vm, node);
- if (!sm->forwarding_enabled)
- {
- if (!s0)
- next0 = NAT_NEXT_DROP;
- }
- other_packets++;
- goto trace0;
- }
+ init_ed_k (&kv0, ip0->dst_address,
+ vnet_buffer (b0)->ip.reass.l4_dst_port, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
+ ip0->protocol);
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ s0 = NULL;
+ if (!clib_bihash_search_16_8 (&sm->out2in_ed, &kv0, &value0))
+ {
+ ASSERT (thread_index == ed_value_get_thread_index (&value0));
+ s0 =
+ pool_elt_at_index (tsm->sessions,
+ ed_value_get_session_index (&value0));
+
+ if (s0->tcp_closed_timestamp && now >= s0->tcp_closed_timestamp)
{
- next0 = icmp_out2in_ed_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
- icmp_packets++;
- goto trace0;
+ nat_free_session_data (sm, s0, thread_index, 0);
+ nat_ed_session_delete (sm, s0, thread_index, 1);
+ s0 = NULL;
}
+ }
- init_ed_k (&kv0, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
- ip0->protocol);
-
- s0 = NULL;
- if (!clib_bihash_search_16_8 (&sm->out2in_ed, &kv0, &value0))
+ if (!s0)
+ {
+ /* Try to match static mapping by external address and port,
+ destination address and port in packet */
+
+ if (snat_static_mapping_match
+ (sm, ip0->dst_address,
+ vnet_buffer (b0)->ip.reass.l4_dst_port, rx_fib_index0,
+ proto0, &sm_addr, &sm_port, &sm_fib_index, 1, 0,
+ &twice_nat0, &lb_nat0, &ip0->src_address, &identity_nat0))
{
- ASSERT (thread_index == ed_value_get_thread_index (&value0));
- s0 =
- pool_elt_at_index (tsm->sessions,
- ed_value_get_session_index (&value0));
-
- if (s0->tcp_closed_timestamp && now >= s0->tcp_closed_timestamp)
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_UDP
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_client))))
{
- nat_free_session_data (sm, s0, thread_index, 0);
- nat_ed_session_delete (sm, s0, thread_index, 1);
- s0 = NULL;
+ goto trace0;
}
- }
- if (!s0)
- {
- /* Try to match static mapping by external address and port,
- destination address and port in packet */
-
- if (snat_static_mapping_match
- (sm, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, rx_fib_index0,
- proto0, &sm_addr, &sm_port, &sm_fib_index, 1, 0,
- &twice_nat0, &lb_nat0, &ip0->src_address, &identity_nat0))
+ if (!sm->forwarding_enabled)
+ {
+ b0->error =
+ node->errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION];
+ next[0] = NAT_NEXT_DROP;
+ }
+ else
{
- /*
- * Send DHCP packets to the ipv4 stack, or we won't
- * be able to use dhcp client on the outside interface
- */
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_UDP
- && (vnet_buffer (b0)->ip.
- reass.l4_dst_port ==
- clib_host_to_net_u16
- (UDP_DST_PORT_dhcp_to_client))))
+ if (next_src_nat
+ (sm, ip0, vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, rx_fib_index0))
{
+ next[0] = NAT_NEXT_IN2OUT_ED_FAST_PATH;
goto trace0;
}
-
- if (!sm->forwarding_enabled)
- {
- b0->error =
- node->errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION];
- next0 = NAT_NEXT_DROP;
- }
+ if (sm->num_workers > 1)
+ create_bypass_for_fwd_worker (sm, b0, ip0, rx_fib_index0);
else
- {
- if (next_src_nat
- (sm, ip0, vnet_buffer (b0)->ip.reass.l4_src_port,
- vnet_buffer (b0)->ip.reass.l4_dst_port,
- thread_index, rx_fib_index0))
- {
- next0 = NAT_NEXT_IN2OUT_ED_FAST_PATH;
- goto trace0;
- }
- if (sm->num_workers > 1)
- create_bypass_for_fwd_worker (sm, b0, ip0,
- rx_fib_index0);
- else
- create_bypass_for_fwd (sm, b0, ip0, rx_fib_index0,
- thread_index);
- }
- goto trace0;
+ create_bypass_for_fwd (sm, b0, ip0, rx_fib_index0,
+ thread_index);
}
+ goto trace0;
+ }
- if (PREDICT_FALSE (identity_nat0))
- goto trace0;
+ if (PREDICT_FALSE (identity_nat0))
+ goto trace0;
- if ((proto0 == NAT_PROTOCOL_TCP)
- && !tcp_flags_is_init (vnet_buffer (b0)->ip.
- reass.icmp_type_or_tcp_flags))
- {
- b0->error = node->errors[NAT_OUT2IN_ED_ERROR_NON_SYN];
- next0 = NAT_NEXT_DROP;
- goto trace0;
- }
+ if ((proto0 == NAT_PROTOCOL_TCP)
+ && !tcp_flags_is_init (vnet_buffer (b0)->ip.
+ reass.icmp_type_or_tcp_flags))
+ {
+ b0->error = node->errors[NAT_OUT2IN_ED_ERROR_NON_SYN];
+ next[0] = NAT_NEXT_DROP;
+ goto trace0;
+ }
- /* Create session initiated by host from external network */
- s0 = create_session_for_static_mapping_ed (sm, b0,
- sm_addr, sm_port,
- sm_fib_index,
- ip0->dst_address,
- vnet_buffer (b0)->
- ip.reass.l4_dst_port,
- rx_fib_index0,
- proto0, node,
- rx_fib_index0,
- thread_index,
- twice_nat0, lb_nat0,
- now);
- if (!s0)
- {
- next0 = NAT_NEXT_DROP;
- goto trace0;
- }
+ /* Create session initiated by host from external network */
+ s0 = create_session_for_static_mapping_ed (sm, b0,
+ sm_addr, sm_port,
+ sm_fib_index,
+ ip0->dst_address,
+ vnet_buffer (b0)->
+ ip.reass.l4_dst_port,
+ rx_fib_index0, proto0,
+ node, rx_fib_index0,
+ thread_index, twice_nat0,
+ lb_nat0, now);
+ if (!s0)
+ {
+ next[0] = NAT_NEXT_DROP;
+ goto trace0;
}
+ }
- old_addr0 = ip0->dst_address.as_u32;
- new_addr0 = ip0->dst_address.as_u32 = s0->in2out.addr.as_u32;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index;
+ old_addr0 = ip0->dst_address.as_u32;
+ new_addr0 = ip0->dst_address.as_u32 = s0->in2out.addr.as_u32;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index;
- sum0 = ip0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
- dst_address);
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
- s0->ext_host_nat_addr.as_u32, ip4_header_t,
- src_address);
- ip0->checksum = ip_csum_fold (sum0);
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
+ s0->ext_host_nat_addr.as_u32, ip4_header_t,
+ src_address);
+ ip0->checksum = ip_csum_fold (sum0);
- old_port0 = vnet_buffer (b0)->ip.reass.l4_dst_port;
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_dst_port;
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
- {
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
- {
- new_port0 = udp0->dst_port = s0->in2out.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 (is_twice_nat_session (s0))
- {
- sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
- s0->ext_host_nat_addr.as_u32,
- ip4_header_t, dst_address);
- sum0 =
- ip_csum_update (sum0,
- vnet_buffer (b0)->ip.
- reass.l4_src_port,
- s0->ext_host_nat_port, ip4_header_t,
- length);
- tcp0->src_port = s0->ext_host_nat_port;
- ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
- }
- tcp0->checksum = ip_csum_fold (sum0);
- }
- tcp_packets++;
- if (nat44_set_tcp_session_state_o2i
- (sm, now, s0,
- vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags,
- vnet_buffer (b0)->ip.reass.tcp_ack_number,
- vnet_buffer (b0)->ip.reass.tcp_seq_number, thread_index))
- goto trace0;
- }
- else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
- && udp0->checksum)
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
new_port0 = udp0->dst_port = s0->in2out.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);
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ 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 (is_twice_nat_session (s0))
{
sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
s0->ext_host_nat_addr.as_u32,
vnet_buffer (b0)->ip.reass.l4_src_port,
s0->ext_host_nat_port, ip4_header_t,
length);
- udp0->src_port = s0->ext_host_nat_port;
+ tcp0->src_port = s0->ext_host_nat_port;
ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
}
- udp0->checksum = ip_csum_fold (sum0);
- udp_packets++;
+ tcp0->checksum = ip_csum_fold (sum0);
}
- else
+ tcp_packets++;
+ if (nat44_set_tcp_session_state_o2i
+ (sm, now, s0,
+ vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags,
+ vnet_buffer (b0)->ip.reass.tcp_ack_number,
+ vnet_buffer (b0)->ip.reass.tcp_seq_number, thread_index))
+ goto trace0;
+ }
+ else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
+ && udp0->checksum)
+ {
+ new_port0 = udp0->dst_port = s0->in2out.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);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
{
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ sum0 = ip_csum_update (sum0, ip0->src_address.as_u32,
+ s0->ext_host_nat_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ s0->ext_host_nat_port, ip4_header_t, length);
+ udp0->src_port = s0->ext_host_nat_port;
+ ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
+ }
+ udp0->checksum = ip_csum_fold (sum0);
+ udp_packets++;
+ }
+ else
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ new_port0 = udp0->dst_port = s0->in2out.port;
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
{
- new_port0 = udp0->dst_port = s0->in2out.port;
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- {
- udp0->src_port = s0->ext_host_nat_port;
- ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
- }
+ udp0->src_port = s0->ext_host_nat_port;
+ ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32;
}
- udp_packets++;
}
+ udp_packets++;
+ }
- /* 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_ed_out2in_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->is_slow_path = 1;
-
- if (s0)
- t->session_index = s0 - tsm->sessions;
- else
- t->session_index = ~0;
- }
+ /* 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);
- pkts_processed += next0 == vnet_buffer2 (b0)->nat.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);
+ trace0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat44_ed_out2in_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next[0];
+ t->is_slow_path = 1;
+
+ if (s0)
+ t->session_index = s0 - tsm->sessions;
+ else
+ t->session_index = ~0;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ pkts_processed += next[0] == vnet_buffer2 (b0)->nat.arc_next;
+
+ n_left_from--;
+ next++;
+ b++;
}
+ vlib_buffer_enqueue_to_next (vm, node, from, (u16 *) nexts,
+ frame->n_vectors);
+
vlib_node_increment_counter (vm, stats_node_index,
NAT_OUT2IN_ED_ERROR_OUT2IN_PACKETS,
pkts_processed);
Code Review / vpp.git / blobdiff