diff options
| author |   Bud Grise <griseb@cisco.com> | 2016-02-19 12:10:33 -0500 |
|---|---|---|
| committer |   Gerrit Code Review <gerrit@fd.io> | 2016-02-26 21:01:17 +0000 |
| commit | d56a6f59e99b7adec6742cd25f0d84bacf594537 (patch) | |
| tree | 868a86b3fd2554ed11744a457e18610de4ddcfd8 /vnet | |
| parent | 060c6fc0b54c909db56856b4d3e3fa65265f5871 (diff) | |
Add packet tracing hint
This avoids checking the buffer flags bit if tracing is not enabled.
Change-Id: I32e1a90b5fd10318254c611344488bc2a441c71e
Signed-off-by: Todd Foggoa (tfoggoa) <tfoggoa@cisco.com>
Diffstat (limited to 'vnet')
| -rw-r--r-- | vnet/vnet/devices/dpdk/node.c | 60 |
1 files changed, 33 insertions, 27 deletions
diff --git a/vnet/vnet/devices/dpdk/node.c b/vnet/vnet/devices/dpdk/node.c index 575f7f4e972..b9815706169 100644 --- a/vnet/vnet/devices/dpdk/node.c +++ b/vnet/vnet/devices/dpdk/node.c @@ -154,25 +154,28 @@ handoff_dispatch_node_fn (vlib_main_t * vm, next0 = vnet_buffer(b0)->io_handoff.next_index; next1 = vnet_buffer(b1)->io_handoff.next_index; - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) + if (PREDICT_FALSE(vm->trace_main.trace_active_hint)) { - vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 0); - handoff_dispatch_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; - t->sw_if_index = sw_if_index0; - t->next_index = next0; - t->buffer_index = bi0; - } - if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) - { - vlib_trace_buffer (vm, node, next1, b1, /* follow_chain */ 0); - handoff_dispatch_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX]; - t->sw_if_index = sw_if_index1; - t->next_index = next1; - t->buffer_index = bi1; + if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) + { + vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 0); + handoff_dispatch_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; + t->sw_if_index = sw_if_index0; + t->next_index = next0; + t->buffer_index = bi0; + } + if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) + { + vlib_trace_buffer (vm, node, next1, b1, /* follow_chain */ 0); + handoff_dispatch_trace_t *t = + vlib_add_trace (vm, node, b1, sizeof (*t)); + sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX]; + t->sw_if_index = sw_if_index1; + t->next_index = next1; + t->buffer_index = bi1; + } } /* verify speculative enqueues, maybe switch current next frame */ @@ -200,16 +203,19 @@ handoff_dispatch_node_fn (vlib_main_t * vm, next0 = vnet_buffer(b0)->io_handoff.next_index; - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) + if (PREDICT_FALSE(vm->trace_main.trace_active_hint)) { - vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 0); - handoff_dispatch_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; - t->sw_if_index = sw_if_index0; - t->next_index = next0; - t->buffer_index = bi0; - } + if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) + { + vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 0); + handoff_dispatch_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; + t->sw_if_index = sw_if_index0; + t->next_index = next0; + t->buffer_index = bi0; + } + } /* verify speculative enqueue, maybe switch current next frame */ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, |