snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
u32 *fragments_to_drop = 0;
- u32 next_in2out = 0, next_out2in = 0, frag_cached = 0;
+ u32 next_in2out = 0, next_out2in = 0;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
NAT44_CLASSIFY_ERROR_NEXT_IN2OUT, next_in2out);
vlib_node_increment_counter (vm, node->node_index,
NAT44_CLASSIFY_ERROR_NEXT_OUT2IN, next_out2in);
- vlib_node_increment_counter (vm, node->node_index,
- NAT44_CLASSIFY_ERROR_FRAG_CACHED, frag_cached);
+ return frame->n_vectors;
+}
+
+static inline uword
+nat44_handoff_classify_node_fn_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next;
+ nat44_classify_next_t next_index;
+ snat_main_t *sm = &snat_main;
+ snat_static_mapping_t *m;
+ u32 *fragments_to_drop = 0;
+ u32 next_in2out = 0, next_out2in = 0;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0 = NAT_NEXT_IN2OUT_CLASSIFY;
+ ip4_header_t *ip0;
+ snat_address_t *ap;
+ snat_session_key_t m_key0;
+ clib_bihash_kv_8_8_t kv0, value0;
+
+ /* 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);
+
+ /* *INDENT-OFF* */
+ vec_foreach (ap, sm->addresses)
+ {
+ if (ip0->dst_address.as_u32 == ap->addr.as_u32)
+ {
+ next0 = NAT_NEXT_OUT2IN_CLASSIFY;
+ goto enqueue0;
+ }
+ }
+ /* *INDENT-ON* */
+
+ if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+ {
+ m_key0.addr = ip0->dst_address;
+ m_key0.port = 0;
+ m_key0.protocol = 0;
+ m_key0.fib_index = 0;
+ kv0.key = m_key0.as_u64;
+ /* try to classify the fragment based on IP header alone */
+ if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external,
+ &kv0, &value0))
+ {
+ m = pool_elt_at_index (sm->static_mappings, value0.value);
+ if (m->local_addr.as_u32 != m->external_addr.as_u32)
+ next0 = NAT_NEXT_OUT2IN_CLASSIFY;
+ goto enqueue0;
+ }
+ m_key0.port =
+ clib_net_to_host_u16 (vnet_buffer (b0)->ip.reass.l4_dst_port);
+ m_key0.protocol = ip_proto_to_snat_proto (ip0->protocol);
+ kv0.key = m_key0.as_u64;
+ if (!clib_bihash_search_8_8
+ (&sm->static_mapping_by_external, &kv0, &value0))
+ {
+ m = pool_elt_at_index (sm->static_mappings, value0.value);
+ if (m->local_addr.as_u32 != m->external_addr.as_u32)
+ next0 = NAT_NEXT_OUT2IN_CLASSIFY;
+ }
+ }
+
+ enqueue0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat44_classify_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->cached = 0;
+ t->next_in2out = next0 == NAT_NEXT_IN2OUT_CLASSIFY ? 1 : 0;
+ }
+
+ next_in2out += next0 == NAT_NEXT_IN2OUT_CLASSIFY;
+ next_out2in += next0 == NAT_NEXT_OUT2IN_CLASSIFY;
+
+ /* 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);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ nat_send_all_to_node (vm, fragments_to_drop, node, 0, NAT_NEXT_DROP);
+
+ vec_free (fragments_to_drop);
+
+ vlib_node_increment_counter (vm, node->node_index,
+ NAT44_CLASSIFY_ERROR_NEXT_IN2OUT, next_in2out);
+ vlib_node_increment_counter (vm, node->node_index,
+ NAT44_CLASSIFY_ERROR_NEXT_OUT2IN, next_out2in);
return frame->n_vectors;
}
u32 thread_index = vm->thread_index;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
u32 *fragments_to_drop = 0;
- u32 next_in2out = 0, next_out2in = 0, frag_cached = 0;
- u8 in_loopback = 0;
+ u32 next_in2out = 0, next_out2in = 0;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
{
u32 bi0;
vlib_buffer_t *b0;
- u32 next0 =
- NAT_NEXT_IN2OUT_ED_FAST_PATH, sw_if_index0, rx_fib_index0;
+ u32 next0 = NAT_NEXT_IN2OUT_ED_FAST_PATH;
+ u32 sw_if_index0, rx_fib_index0;
ip4_header_t *ip0;
snat_address_t *ap;
snat_session_key_t m_key0;
b0 = vlib_get_buffer (vm, bi0);
ip0 = vlib_buffer_get_current (b0);
- if (!in_loopback)
- {
- u32 arc_next = 0;
-
- vnet_feature_next (&arc_next, b0);
- vnet_buffer2 (b0)->nat.arc_next = arc_next;
- }
+ u32 arc_next;
+ vnet_feature_next (&arc_next, b0);
+ vnet_buffer2 (b0)->nat.arc_next = arc_next;
if (ip0->protocol != IP_PROTOCOL_ICMP)
{
NAT44_CLASSIFY_ERROR_NEXT_IN2OUT, next_in2out);
vlib_node_increment_counter (vm, node->node_index,
NAT44_CLASSIFY_ERROR_NEXT_OUT2IN, next_out2in);
- vlib_node_increment_counter (vm, node->node_index,
- NAT44_CLASSIFY_ERROR_FRAG_CACHED, frag_cached);
-
return frame->n_vectors;
}
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- return nat44_classify_node_fn_inline (vm, node, frame);
+ return nat44_handoff_classify_node_fn_inline (vm, node, frame);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (nat44_handoff_classify_node) = {
.name = "nat44-handoff-classify",
.vector_size = sizeof (u32),
+ .sibling_of = "nat-default",
.format_trace = format_nat44_classify_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_next_nodes = NAT44_CLASSIFY_N_NEXT,
- .next_nodes = {
- [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-in2out-worker-handoff",
- [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-out2in-worker-handoff",
- [NAT44_CLASSIFY_NEXT_DROP] = "error-drop",
- },
};
/* *INDENT-ON* */
Code Review / vpp.git / blobdiff