#define foreach_snat_in2out_error \
_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \
-_(IN2OUT_PACKETS, "good in2out packets processed") \
_(OUT_OF_PORTS, "out of ports") \
_(BAD_OUTSIDE_FIB, "outside VRF ID not found") \
_(BAD_ICMP_TYPE, "unsupported ICMP type") \
_(NO_TRANSLATION, "no translation") \
_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \
-_(DROP_FRAGMENT, "drop fragment") \
-_(TCP_PACKETS, "TCP packets") \
-_(UDP_PACKETS, "UDP packets") \
-_(ICMP_PACKETS, "ICMP packets") \
-_(OTHER_PACKETS, "other protocol packets") \
-_(FRAGMENTS, "fragments") \
-_(CACHED_FRAGMENTS, "cached fragments") \
-_(PROCESSED_FRAGMENTS, "processed fragments")
+_(CANNOT_CREATE_USER, "cannot create NAT user")
typedef enum
{
&value0))
{
/* or is static mappings */
- ip4_address_t dummy_addr;
- u16 dummy_port;
- u32 dummy_fib_index;
+ ip4_address_t placeholder_addr;
+ u16 placeholder_port;
+ u32 placeholder_fib_index;
if (!snat_static_mapping_match
(sm, ip0->dst_address, udp0->dst_port, sm->outside_fib_index,
- proto0, &dummy_addr, &dummy_port, &dummy_fib_index, 1, 0, 0, 0, 0,
- 0))
+ proto0, &placeholder_addr, &placeholder_port,
+ &placeholder_fib_index, 1, 0, 0, 0, 0, 0))
return 0;
}
else
if (PREDICT_FALSE (nat44_maximum_sessions_exceeded (sm, thread_index)))
{
b0->error = node->errors[SNAT_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED];
- nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
+ nat_ipfix_logging_max_sessions (thread_index,
+ sm->max_translations_per_thread);
nat_elog_notice ("maximum sessions exceeded");
return SNAT_IN2OUT_NEXT_DROP;
}
thread_index);
if (!u)
{
- nat_elog_warn ("create NAT user failed");
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_CANNOT_CREATE_USER];
return SNAT_IN2OUT_NEXT_DROP;
}
if (vnet_buffer (b0)->sw_if_index[VLIB_TX] == ~0)
{
- if (sm->deterministic ||
- 0 != snat_icmp_hairpinning (sm, b0, ip0, icmp0,
+ if (0 != snat_icmp_hairpinning (sm, b0, ip0, icmp0,
sm->endpoint_dependent))
vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
}
vlib_frame_t * frame, int is_slow_path,
int is_output_feature)
{
- u32 n_left_from, *from, *to_next;
- snat_in2out_next_t next_index;
- u32 pkts_processed = 0;
+ u32 n_left_from, *from;
snat_main_t *sm = &snat_main;
f64 now = vlib_time_now (vm);
- u32 stats_node_index;
u32 thread_index = vm->thread_index;
- u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
- 0, fragments = 0;
-
- stats_node_index = is_slow_path ? sm->in2out_slowpath_node_index :
- sm->in2out_node_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, next1;
+ u32 sw_if_index0, sw_if_index1;
+ ip4_header_t *ip0, *ip1;
+ ip_csum_t sum0, sum1;
+ u32 new_addr0, old_addr0, new_addr1, old_addr1;
+ u16 old_port0, new_port0, old_port1, new_port1;
+ udp_header_t *udp0, *udp1;
+ tcp_header_t *tcp0, *tcp1;
+ icmp46_header_t *icmp0, *icmp1;
+ u32 rx_fib_index0, rx_fib_index1;
+ u32 proto0, proto1;
+ snat_session_t *s0 = 0, *s1 = 0;
+ clib_bihash_kv_8_8_t kv0, value0, kv1, value1;
+ u32 iph_offset0 = 0, iph_offset1 = 0;
+
+ 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);
- while (n_left_from >= 4 && n_left_to_next >= 2)
- {
- 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;
- u32 new_addr0, old_addr0, new_addr1, old_addr1;
- u16 old_port0, new_port0, old_port1, new_port1;
- udp_header_t *udp0, *udp1;
- tcp_header_t *tcp0, *tcp1;
- icmp46_header_t *icmp0, *icmp1;
- u32 rx_fib_index0, rx_fib_index1;
- u32 proto0, proto1;
- snat_session_t *s0 = 0, *s1 = 0;
- clib_bihash_kv_8_8_t kv0, value0, kv1, value1;
- u32 iph_offset0 = 0, iph_offset1 = 0;
-
- /* 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, STORE);
- CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
- }
-
- /* 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;
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
+ CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ }
- if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
+ if (is_output_feature)
+ iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
- ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
- iph_offset0);
+ 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;
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+ icmp0 = (icmp46_header_t *) udp0;
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index0);
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
+ sw_if_index0);
- next0 = next1 = SNAT_IN2OUT_NEXT_LOOKUP;
+ next0 = next1 = SNAT_IN2OUT_NEXT_LOOKUP;
- 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 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
- goto trace00;
- }
+ 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 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace00;
+ }
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- /* Next configured feature, probably ip4-lookup */
- if (is_slow_path)
+ /* Next configured feature, probably ip4-lookup */
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
+ if (nat_in2out_sm_unknown_proto (sm, b0, ip0, rx_fib_index0))
{
- if (nat_in2out_sm_unknown_proto
- (sm, b0, ip0, rx_fib_index0))
- {
- next0 = SNAT_IN2OUT_NEXT_DROP;
- b0->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
- }
- other_packets++;
- goto trace00;
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error =
+ node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ other : &sm->counters.fastpath.
+ in2out.other, thread_index,
+ sw_if_index0, 1);
+ goto trace00;
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- next0 = icmp_in2out_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
- node, next0, now, thread_index, &s0);
- icmp_packets++;
- goto trace00;
- }
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ next0 = icmp_in2out_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
+ node, next0, now, thread_index, &s0);
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ icmp : &sm->counters.fastpath.
+ in2out.icmp, thread_index,
+ sw_if_index0, 1);
+ goto trace00;
}
- else
+ }
+ else
+ {
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
- {
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace00;
- }
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace00;
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace00;
- }
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace00;
}
+ }
- init_nat_k (&kv0, ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
- proto0);
- if (PREDICT_FALSE
- (clib_bihash_search_8_8
- (&sm->per_thread_data[thread_index].in2out, &kv0,
- &value0) != 0))
+ init_nat_k (&kv0, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
+ proto0);
+ if (PREDICT_FALSE
+ (clib_bihash_search_8_8
+ (&sm->per_thread_data[thread_index].in2out, &kv0, &value0) != 0))
+ {
+ if (is_slow_path)
{
- if (is_slow_path)
+ if (is_output_feature)
{
- if (is_output_feature)
- {
- if (PREDICT_FALSE
- (nat_not_translate_output_feature
- (sm, ip0, proto0,
- vnet_buffer (b0)->ip.reass.l4_src_port,
- vnet_buffer (b0)->ip.reass.l4_dst_port,
- thread_index, sw_if_index0)))
- goto trace00;
-
- /*
- * 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_server))
- && ip0->dst_address.as_u32 == 0xffffffff))
- goto trace00;
- }
- else
- {
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index0, ip0, proto0,
- rx_fib_index0, thread_index)))
- goto trace00;
- }
-
- next0 = slow_path (sm, b0, ip0,
- ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port,
- rx_fib_index0,
- proto0,
- &s0, node, next0, thread_index, now);
- if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ if (PREDICT_FALSE
+ (nat_not_translate_output_feature
+ (sm, ip0, proto0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index0)))
goto trace00;
- if (PREDICT_FALSE (!s0))
+ /*
+ * 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_server))
+ && ip0->dst_address.as_u32 == 0xffffffff))
goto trace00;
}
else
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace00;
+ if (PREDICT_FALSE
+ (snat_not_translate
+ (sm, node, sw_if_index0, ip0, proto0,
+ rx_fib_index0, thread_index)))
+ goto trace00;
}
+
+ next0 = slow_path (sm, b0, ip0,
+ ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ rx_fib_index0,
+ proto0, &s0, node, next0, thread_index, now);
+ if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace00;
+
+ if (PREDICT_FALSE (!s0))
+ goto trace00;
}
else
- s0 =
- pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value0.value);
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace00;
+ }
+ }
+ else
+ s0 =
+ pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ value0.value);
- b0->flags |= VNET_BUFFER_F_IS_NATED;
+ b0->flags |= VNET_BUFFER_F_IS_NATED;
- 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;
+ 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 */ );
- ip0->checksum = ip_csum_fold (sum0);
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
+ ip4_header_t, src_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
- {
- old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
- 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 /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
- }
- tcp_packets++;
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ 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 /* changed member */ );
+ sum0 = ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ mss_clamping (sm->mss_clamping, tcp0, &sum0);
+ tcp0->checksum = ip_csum_fold (sum0);
}
- else
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.tcp : &sm->
+ counters.fastpath.in2out.tcp,
+ thread_index, sw_if_index0, 1);
+ }
+ else
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ udp0->src_port = s0->out2in.port;
+ if (PREDICT_FALSE (udp0->checksum))
{
- udp0->src_port = s0->out2in.port;
- if (PREDICT_FALSE (udp0->checksum))
- {
- old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
- new_port0 = udp0->src_port;
- sum0 = udp0->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 */ );
- udp0->checksum = ip_csum_fold (sum0);
- }
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ new_port0 = udp0->src_port;
+ sum0 = udp0->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 */ );
+ udp0->checksum = ip_csum_fold (sum0);
}
- udp_packets++;
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.udp : &sm->
+ counters.fastpath.in2out.udp,
+ thread_index, sw_if_index0, 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);
- trace00:
+ /* 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);
+ trace00:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- snat_in2out_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->is_slow_path = is_slow_path;
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->session_index = ~0;
- if (s0)
- t->session_index =
- s0 - sm->per_thread_data[thread_index].sessions;
- }
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ snat_in2out_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->is_slow_path = is_slow_path;
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (s0)
+ t->session_index =
+ s0 - sm->per_thread_data[thread_index].sessions;
+ }
- pkts_processed += next0 == SNAT_IN2OUT_NEXT_LOOKUP;
+ if (next0 == SNAT_IN2OUT_NEXT_DROP)
+ {
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ drops : &sm->counters.fastpath.
+ in2out.drops, thread_index,
+ sw_if_index0, 1);
+ }
- if (is_output_feature)
- iph_offset1 = vnet_buffer (b1)->ip.reass.save_rewrite_length;
+ if (is_output_feature)
+ iph_offset1 = vnet_buffer (b1)->ip.reass.save_rewrite_length;
- ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
- iph_offset1);
+ ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
+ iph_offset1);
- udp1 = ip4_next_header (ip1);
- tcp1 = (tcp_header_t *) udp1;
- icmp1 = (icmp46_header_t *) udp1;
+ udp1 = ip4_next_header (ip1);
+ tcp1 = (tcp_header_t *) udp1;
+ icmp1 = (icmp46_header_t *) udp1;
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
- rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index1);
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
+ sw_if_index1);
- 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 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
- goto trace01;
- }
+ 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 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace01;
+ }
- proto1 = ip_proto_to_nat_proto (ip1->protocol);
+ proto1 = ip_proto_to_nat_proto (ip1->protocol);
- /* Next configured feature, probably ip4-lookup */
- if (is_slow_path)
+ /* Next configured feature, probably ip4-lookup */
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_OTHER))
+ if (nat_in2out_sm_unknown_proto (sm, b1, ip1, rx_fib_index1))
{
- if (nat_in2out_sm_unknown_proto
- (sm, b1, ip1, rx_fib_index1))
- {
- next1 = SNAT_IN2OUT_NEXT_DROP;
- b1->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
- }
- other_packets++;
- goto trace01;
+ next1 = SNAT_IN2OUT_NEXT_DROP;
+ b1->error =
+ node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ other : &sm->counters.fastpath.
+ in2out.other, thread_index,
+ sw_if_index1, 1);
+ goto trace01;
+ }
- if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
- {
- next1 = icmp_in2out_slow_path
- (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
- next1, now, thread_index, &s1);
- icmp_packets++;
- goto trace01;
- }
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
+ {
+ next1 = icmp_in2out_slow_path
+ (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
+ next1, now, thread_index, &s1);
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ icmp : &sm->counters.fastpath.
+ in2out.icmp, thread_index,
+ sw_if_index1, 1);
+ goto trace01;
}
- else
+ }
+ else
+ {
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_OTHER))
- {
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace01;
- }
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace01;
+ }
- if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
- {
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace01;
- }
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
+ {
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace01;
}
+ }
- init_nat_k (&kv1, ip1->src_address,
- vnet_buffer (b1)->ip.reass.l4_src_port, rx_fib_index1,
- proto1);
- if (PREDICT_FALSE
- (clib_bihash_search_8_8
- (&sm->per_thread_data[thread_index].in2out, &kv1,
- &value1) != 0))
+ init_nat_k (&kv1, ip1->src_address,
+ vnet_buffer (b1)->ip.reass.l4_src_port, rx_fib_index1,
+ proto1);
+ if (PREDICT_FALSE
+ (clib_bihash_search_8_8
+ (&sm->per_thread_data[thread_index].in2out, &kv1, &value1) != 0))
+ {
+ if (is_slow_path)
{
- if (is_slow_path)
+ if (is_output_feature)
{
- if (is_output_feature)
- {
- if (PREDICT_FALSE
- (nat_not_translate_output_feature
- (sm, ip1, proto1,
- vnet_buffer (b1)->ip.reass.l4_src_port,
- vnet_buffer (b1)->ip.reass.l4_dst_port,
- thread_index, sw_if_index1)))
- goto trace01;
-
- /*
- * Send DHCP packets to the ipv4 stack, or we won't
- * be able to use dhcp client on the outside interface
- */
- if (PREDICT_FALSE
- (proto1 == NAT_PROTOCOL_UDP
- && (vnet_buffer (b1)->ip.reass.l4_dst_port ==
- clib_host_to_net_u16
- (UDP_DST_PORT_dhcp_to_server))
- && ip1->dst_address.as_u32 == 0xffffffff))
- goto trace01;
- }
- else
- {
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index1, ip1, proto1,
- rx_fib_index1, thread_index)))
- goto trace01;
- }
-
- next1 =
- slow_path (sm, b1, ip1, ip1->src_address,
- vnet_buffer (b1)->ip.reass.l4_src_port,
- rx_fib_index1, proto1, &s1, node, next1,
- thread_index, now);
- if (PREDICT_FALSE (next1 == SNAT_IN2OUT_NEXT_DROP))
+ if (PREDICT_FALSE
+ (nat_not_translate_output_feature
+ (sm, ip1, proto1,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ vnet_buffer (b1)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index1)))
goto trace01;
- if (PREDICT_FALSE (!s1))
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ (proto1 == NAT_PROTOCOL_UDP
+ && (vnet_buffer (b1)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))
+ && ip1->dst_address.as_u32 == 0xffffffff))
goto trace01;
}
else
{
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace01;
+ if (PREDICT_FALSE
+ (snat_not_translate
+ (sm, node, sw_if_index1, ip1, proto1,
+ rx_fib_index1, thread_index)))
+ goto trace01;
}
+
+ next1 =
+ slow_path (sm, b1, ip1, ip1->src_address,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ rx_fib_index1, proto1, &s1, node, next1,
+ thread_index, now);
+ if (PREDICT_FALSE (next1 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace01;
+
+ if (PREDICT_FALSE (!s1))
+ goto trace01;
}
else
- s1 =
- pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value1.value);
+ {
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace01;
+ }
+ }
+ else
+ s1 =
+ pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ value1.value);
- b1->flags |= VNET_BUFFER_F_IS_NATED;
+ b1->flags |= VNET_BUFFER_F_IS_NATED;
- old_addr1 = ip1->src_address.as_u32;
- ip1->src_address = s1->out2in.addr;
- new_addr1 = ip1->src_address.as_u32;
- if (!is_output_feature)
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = s1->out2in.fib_index;
+ old_addr1 = ip1->src_address.as_u32;
+ ip1->src_address = s1->out2in.addr;
+ new_addr1 = ip1->src_address.as_u32;
+ if (!is_output_feature)
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = s1->out2in.fib_index;
- sum1 = ip1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
- ip4_header_t,
- src_address /* changed member */ );
- ip1->checksum = ip_csum_fold (sum1);
+ sum1 = ip1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
+ ip4_header_t, src_address /* changed member */ );
+ ip1->checksum = ip_csum_fold (sum1);
- if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
+ {
+ if (!vnet_buffer (b1)->ip.reass.is_non_first_fragment)
{
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
- {
- old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
- 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 /* changed member */ );
- sum1 = ip_csum_update (sum1, old_port1, new_port1,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp1, &sum1);
- tcp1->checksum = ip_csum_fold (sum1);
- }
- tcp_packets++;
+ old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
+ 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 /* changed member */ );
+ sum1 = ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ mss_clamping (sm->mss_clamping, tcp1, &sum1);
+ tcp1->checksum = ip_csum_fold (sum1);
}
- else
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.tcp : &sm->
+ counters.fastpath.in2out.tcp,
+ thread_index, sw_if_index1, 1);
+ }
+ else
+ {
+ if (!vnet_buffer (b1)->ip.reass.is_non_first_fragment)
{
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ udp1->src_port = s1->out2in.port;
+ if (PREDICT_FALSE (udp1->checksum))
{
- udp1->src_port = s1->out2in.port;
- if (PREDICT_FALSE (udp1->checksum))
- {
- old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
- new_port1 = udp1->src_port;
- sum1 = udp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1, new_addr1, 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);
- }
+ old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
+ new_port1 = udp1->src_port;
+ sum1 = udp1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1, 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);
}
- udp_packets++;
- }
-
- /* Accounting */
- nat44_session_update_counters (s1, now,
- vlib_buffer_length_in_chain (vm, b1),
- thread_index);
- /* Per-user LRU list maintenance */
- nat44_session_update_lru (sm, s1, thread_index);
- trace01:
-
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b1->flags & VLIB_BUFFER_IS_TRACED)))
- {
- snat_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 (s1)
- t->session_index =
- s1 - sm->per_thread_data[thread_index].sessions;
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.udp : &sm->
+ counters.fastpath.in2out.udp,
+ thread_index, sw_if_index1, 1);
+ }
- pkts_processed += next1 == SNAT_IN2OUT_NEXT_LOOKUP;
+ /* Accounting */
+ nat44_session_update_counters (s1, now,
+ vlib_buffer_length_in_chain (vm, b1),
+ thread_index);
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, s1, thread_index);
+ trace01:
- /* 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);
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b1->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ snat_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 (s1)
+ t->session_index =
+ s1 - sm->per_thread_data[thread_index].sessions;
}
- while (n_left_from > 0 && n_left_to_next > 0)
+ if (next1 == SNAT_IN2OUT_NEXT_DROP)
{
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0;
- u32 sw_if_index0;
- ip4_header_t *ip0;
- ip_csum_t sum0;
- u32 new_addr0, old_addr0;
- u16 old_port0, new_port0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- icmp46_header_t *icmp0;
- u32 rx_fib_index0;
- u32 proto0;
- snat_session_t *s0 = 0;
- clib_bihash_kv_8_8_t kv0, value0;
- u32 iph_offset0 = 0;
-
- /* 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 = SNAT_IN2OUT_NEXT_LOOKUP;
-
- if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ drops : &sm->counters.fastpath.
+ in2out.drops, thread_index,
+ sw_if_index1, 1);
+ }
- ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
- iph_offset0);
+ n_left_from -= 2;
+ next[0] = next0;
+ next[1] = next1;
+ next += 2;
+ }
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
- icmp0 = (icmp46_header_t *) udp0;
+ while (n_left_from > 0)
+ {
+ vlib_buffer_t *b0;
+ u32 next0;
+ u32 sw_if_index0;
+ ip4_header_t *ip0;
+ ip_csum_t sum0;
+ u32 new_addr0, old_addr0;
+ u16 old_port0, new_port0;
+ udp_header_t *udp0;
+ tcp_header_t *tcp0;
+ icmp46_header_t *icmp0;
+ u32 rx_fib_index0;
+ u32 proto0;
+ snat_session_t *s0 = 0;
+ clib_bihash_kv_8_8_t kv0, value0;
+ u32 iph_offset0 = 0;
+
+ b0 = *b;
+ b++;
+ next0 = SNAT_IN2OUT_NEXT_LOOKUP;
+
+ if (is_output_feature)
+ iph_offset0 = vnet_buffer (b0)->ip.reass.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;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
+ 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 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace0;
+ }
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index0);
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- if (PREDICT_FALSE (ip0->ttl == 1))
+ /* Next configured feature, probably ip4-lookup */
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- 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 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ if (nat_in2out_sm_unknown_proto (sm, b0, ip0, rx_fib_index0))
+ {
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error =
+ node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ }
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ other : &sm->counters.fastpath.
+ in2out.other, thread_index,
+ sw_if_index0, 1);
goto trace0;
}
- proto0 = ip_proto_to_nat_proto (ip0->protocol);
-
- /* Next configured feature, probably ip4-lookup */
- if (is_slow_path)
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
{
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
- {
- if (nat_in2out_sm_unknown_proto
- (sm, b0, ip0, rx_fib_index0))
- {
- next0 = SNAT_IN2OUT_NEXT_DROP;
- b0->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
- }
- other_packets++;
- goto trace0;
- }
-
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- next0 = icmp_in2out_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
- icmp_packets++;
- goto trace0;
- }
+ next0 = icmp_in2out_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ icmp : &sm->counters.fastpath.
+ in2out.icmp, thread_index,
+ sw_if_index0, 1);
+ goto trace0;
}
- else
+ }
+ else
+ {
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
- {
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace0;
- }
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace0;
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
- {
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace0;
- }
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace0;
}
+ }
- init_nat_k (&kv0, ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
- proto0);
+ init_nat_k (&kv0, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
+ proto0);
- if (clib_bihash_search_8_8
- (&sm->per_thread_data[thread_index].in2out, &kv0, &value0))
+ if (clib_bihash_search_8_8
+ (&sm->per_thread_data[thread_index].in2out, &kv0, &value0))
+ {
+ if (is_slow_path)
{
- if (is_slow_path)
+ if (is_output_feature)
{
- if (is_output_feature)
- {
- if (PREDICT_FALSE
- (nat_not_translate_output_feature
- (sm, ip0, proto0,
- vnet_buffer (b0)->ip.reass.l4_src_port,
- vnet_buffer (b0)->ip.reass.l4_dst_port,
- thread_index, sw_if_index0)))
- 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
- (proto0 == NAT_PROTOCOL_UDP
- && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
- clib_host_to_net_u16
- (UDP_DST_PORT_dhcp_to_server))
- && ip0->dst_address.as_u32 == 0xffffffff))
- goto trace0;
- }
- else
- {
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index0, ip0, proto0,
- rx_fib_index0, thread_index)))
- goto trace0;
- }
-
- next0 = slow_path (sm, b0, ip0,
- ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port,
- rx_fib_index0,
- proto0,
- &s0, node, next0, thread_index, now);
-
- if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ if (PREDICT_FALSE
+ (nat_not_translate_output_feature
+ (sm, ip0, proto0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index0)))
goto trace0;
- if (PREDICT_FALSE (!s0))
+ /*
+ * 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_server))
+ && ip0->dst_address.as_u32 == 0xffffffff))
goto trace0;
}
else
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace0;
+ if (PREDICT_FALSE
+ (snat_not_translate
+ (sm, node, sw_if_index0, ip0, proto0, rx_fib_index0,
+ thread_index)))
+ goto trace0;
}
+
+ next0 =
+ slow_path (sm, b0, ip0, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ rx_fib_index0, proto0, &s0, node, next0,
+ thread_index, now);
+
+ if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace0;
+
+ if (PREDICT_FALSE (!s0))
+ goto trace0;
}
else
- s0 =
- pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value0.value);
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace0;
+ }
+ }
+ else
+ s0 =
+ pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ value0.value);
- b0->flags |= VNET_BUFFER_F_IS_NATED;
+ b0->flags |= VNET_BUFFER_F_IS_NATED;
- 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;
+ 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 */ );
- ip0->checksum = ip_csum_fold (sum0);
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
+ ip4_header_t, src_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
- {
- old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
- 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 /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
- }
- tcp_packets++;
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ 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 /* changed member */ );
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ mss_clamping (sm->mss_clamping, tcp0, &sum0);
+ tcp0->checksum = ip_csum_fold (sum0);
}
- else
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.tcp : &sm->
+ counters.fastpath.in2out.tcp,
+ thread_index, sw_if_index0, 1);
+ }
+ else
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ udp0->src_port = s0->out2in.port;
+ if (PREDICT_FALSE (udp0->checksum))
{
- udp0->src_port = s0->out2in.port;
- if (PREDICT_FALSE (udp0->checksum))
- {
- old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
- new_port0 = udp0->src_port;
- sum0 = udp0->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 */ );
- udp0->checksum = ip_csum_fold (sum0);
- }
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ new_port0 = udp0->src_port;
+ sum0 = udp0->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 */ );
+ udp0->checksum = ip_csum_fold (sum0);
}
- udp_packets++;
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.udp : &sm->
+ counters.fastpath.in2out.udp,
+ thread_index, sw_if_index0, 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)))
- {
- snat_in2out_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->is_slow_path = is_slow_path;
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->session_index = ~0;
- if (s0)
- t->session_index =
- s0 - sm->per_thread_data[thread_index].sessions;
- }
+ /* 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 == SNAT_IN2OUT_NEXT_LOOKUP;
+ trace0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ snat_in2out_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->is_slow_path = is_slow_path;
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (s0)
+ t->session_index =
+ s0 - sm->per_thread_data[thread_index].sessions;
+ }
- /* 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 (next0 == SNAT_IN2OUT_NEXT_DROP)
+ {
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ drops : &sm->counters.fastpath.
+ in2out.drops, thread_index,
+ sw_if_index0, 1);
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ n_left_from--;
+ next[0] = next0;
+ next++;
}
- vlib_node_increment_counter (vm, stats_node_index,
- SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
- pkts_processed);
- vlib_node_increment_counter (vm, stats_node_index,
- SNAT_IN2OUT_ERROR_TCP_PACKETS, tcp_packets);
- vlib_node_increment_counter (vm, stats_node_index,
- SNAT_IN2OUT_ERROR_UDP_PACKETS, udp_packets);
- vlib_node_increment_counter (vm, stats_node_index,
- SNAT_IN2OUT_ERROR_ICMP_PACKETS, icmp_packets);
- vlib_node_increment_counter (vm, stats_node_index,
- SNAT_IN2OUT_ERROR_OTHER_PACKETS,
- other_packets);
- vlib_node_increment_counter (vm, stats_node_index,
- SNAT_IN2OUT_ERROR_FRAGMENTS, fragments);
-
+ vlib_buffer_enqueue_to_next (vm, node, from, (u16 *) nexts,
+ frame->n_vectors);
return frame->n_vectors;
}
{
u32 n_left_from, *from, *to_next;
snat_in2out_next_t next_index;
- u32 pkts_processed = 0;
snat_main_t *sm = &snat_main;
- u32 stats_node_index;
int is_hairpinning = 0;
- stats_node_index = sm->in2out_fast_node_index;
-
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
t->is_hairpinning = is_hairpinning;
}
- pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+ if (next0 != SNAT_IN2OUT_NEXT_DROP)
+ {
+
+ vlib_increment_simple_counter (&sm->counters.fastpath.
+ in2out.other, sw_if_index0,
+ vm->thread_index, 1);
+ }
/* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, stats_node_index,
- SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
- pkts_processed);
return frame->n_vectors;
}
Code Review / vpp.git / blobdiff