diff options
Diffstat (limited to 'vnet/vnet/mpls/node.c')
-rw-r--r-- | vnet/vnet/mpls/node.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/vnet/vnet/mpls/node.c b/vnet/vnet/mpls/node.c index 2b0461f751e..1810091252e 100644 --- a/vnet/vnet/mpls/node.c +++ b/vnet/vnet/mpls/node.c @@ -90,6 +90,93 @@ mpls_input_inline (vlib_main_t * vm, vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + while (n_left_from >= 4 && n_left_to_next >= 2) + { + u32 label0, bi0, next0, sw_if_index0; + u32 label1, bi1, next1, sw_if_index1; + mpls_unicast_header_t *h0, *h1; + vlib_buffer_t *b0, *b1; + + /* 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, STORE); + vlib_prefetch_buffer_header (p3, STORE); + + CLIB_PREFETCH (p2->data, sizeof (h0[0]), STORE); + CLIB_PREFETCH (p3->data, sizeof (h1[0]), STORE); + } + + + bi0 = to_next[0] = from[0]; + bi1 = to_next[1] = 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); + + h0 = vlib_buffer_get_current (b0); + h1 = vlib_buffer_get_current (b1); + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; + + label0 = clib_net_to_host_u32 (h0->label_exp_s_ttl); + label1 = clib_net_to_host_u32 (h1->label_exp_s_ttl); + + /* TTL expired? */ + if (PREDICT_FALSE(vnet_mpls_uc_get_ttl (label0) == 0)) + { + next0 = MPLS_INPUT_NEXT_DROP; + b0->error = node->errors[MPLS_ERROR_TTL_EXPIRED]; + } + else + { + next0 = MPLS_INPUT_NEXT_LOOKUP; + vnet_feature_arc_start(mm->input_feature_arc_index, sw_if_index0, &next0, b0); + vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1); + } + + if (PREDICT_FALSE(vnet_mpls_uc_get_ttl (label1) == 0)) + { + next1 = MPLS_INPUT_NEXT_DROP; + b1->error = node->errors[MPLS_ERROR_TTL_EXPIRED]; + } + else + { + next1 = MPLS_INPUT_NEXT_LOOKUP; + vnet_feature_arc_start(mm->input_feature_arc_index, sw_if_index1, &next1, b1); + vlib_increment_simple_counter (cm, cpu_index, sw_if_index1, 1); + } + + if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) + { + mpls_input_trace_t *tr = vlib_add_trace (vm, node, + b0, sizeof (*tr)); + tr->next_index = next0; + tr->label_host_byte_order = label0; + } + if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) + { + mpls_input_trace_t *tr = vlib_add_trace (vm, node, + b1, sizeof (*tr)); + tr->next_index = next1; + tr->label_host_byte_order = label1; + } + + vlib_validate_buffer_enqueue_x2 (vm, node, next_index, + to_next, n_left_to_next, + bi0, bi1, next0, next1); + } + while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0; |