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authorBenoît Ganne <bganne@cisco.com>2021-03-04 14:31:03 +0100
committerDamjan Marion <dmarion@me.com>2021-05-01 11:42:37 +0000
commitf89bbbe300dad7bc479db535e7822199f98aca30 (patch)
tree1163eeac010375a962fcda8c2e0c7a7046161bf1 /docs
parentc8983241b9d93d2c3b60b0705efbc3cdee54c534 (diff)
vlib: refactor trajectory trace debug feature
trajectory trace has been broken for a while because we used to save the buffer trajectory in a vector pointed to in opaque2. This does not work well when opaque2 is copied (eg. because of a clone) as 2 buffers end up sharing the same vector. This dedicates a full cacheline in the buffer metadata instead when trajectory is compiled in. No dynamic allocation, no sharing, no tears. Type: refactor Change-Id: I6a028ca1b48d38f393a36979e5e452c2dd48ad3f Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'docs')
-rw-r--r--docs/gettingstarted/developers/vnet.md5
1 files changed, 1 insertions, 4 deletions
diff --git a/docs/gettingstarted/developers/vnet.md b/docs/gettingstarted/developers/vnet.md
index d9bd7b54de7..09f81e46643 100644
--- a/docs/gettingstarted/developers/vnet.md
+++ b/docs/gettingstarted/developers/vnet.md
@@ -162,9 +162,6 @@ blindly cut-'n-pasted.
b0 = vlib_get_buffer (vm, bi0);
- /* Initialize the buffer */
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
-
/* At this point b0->current_data = 0, b0->current_length = 0 */
/*
@@ -206,7 +203,7 @@ blindly cut-'n-pasted.
vec_len (udp_data));
}
- b0->flags |= (VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
/* sw_if_index 0 is the "local" interface, which always exists */
vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;