From 76b5649d074ab198cbf5737ac76d21649a61bffd Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Fri, 28 Sep 2018 15:16:14 +0000 Subject: Punt Infra A punt/exception path that provides: 1) clients that use the infra 2) clients can create punt reasons 3) clients can register to recieve packets that are punted for a given reason to be sent to the desired node. 4) nodes which punt packets fill in the {reason,protocol} of the buffere (in the meta-data) and send to the new node "punt-dispatch" 5) punt-dispatch sends packets to the registered nodes or drops Change-Id: Ia4f144337f1387cbe585b4f375d0842aefffcde5 Signed-off-by: Neale Ranns --- src/vlib/buffer.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'src/vlib/buffer.h') diff --git a/src/vlib/buffer.h b/src/vlib/buffer.h index 514e73bd7ca..0fd57f5275b 100644 --- a/src/vlib/buffer.h +++ b/src/vlib/buffer.h @@ -139,8 +139,15 @@ typedef union * VLIB_BUFFER_NEXT_PRESENT flag is set. */ u32 next_buffer; - /** Used by feature subgraph arcs to visit enabled feature nodes */ - u32 current_config_index; + /** The following fields can be in a union because once a packet enters + * the punt path, it is no longer on a feature arc */ + union + { + /** Used by feature subgraph arcs to visit enabled feature nodes */ + u32 current_config_index; + /* the reason the packet once punted */ + u32 punt_reason; + }; /** Opaque data used by sub-graphs for their own purposes. */ u32 opaque[10]; -- cgit 1.2.3-korg