diff options
| author |   Neale Ranns <nranns@cisco.com> | 2016-11-29 06:51:37 -0800 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2016-12-05 09:20:26 +0000 |
| commit | f06aea5c7267cffabc1cc2438510a8fe7784079c (patch) | |
| tree | b0ded9cd5d10d96b5c416dfc93935c5baca1d475 /vnet/vnet/buffer.h | |
| parent | 072f8debf21c786ab785ed623229935e0a6cddb6 (diff) | |
Locally generated packet go through lookup/load-balance - locally-generated is an attribute of the packet and checked where necessary
Add a flag to the vnet_buffer to indicate a packet is locally originated. Then in the rewrite nodes we can check this flag and not perform the TTL decrement. The switch path cost is expected to be fractions of a clock - the flags will be hot in the cache.
The cehcks are necessary to due the requirements that VPP must be able to emit an IP packet with TTL=255.
Change-Id: Ieb9cf06e34df54fd5c950293de8b665016295c51
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'vnet/vnet/buffer.h')
| -rw-r--r-- | vnet/vnet/buffer.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/vnet/vnet/buffer.h b/vnet/vnet/buffer.h index b3c71c127cc..6da699369f8 100644 --- a/vnet/vnet/buffer.h +++ b/vnet/vnet/buffer.h @@ -67,8 +67,8 @@ #define LOG2_BUFFER_HANDOFF_NEXT_VALID LOG2_VLIB_BUFFER_FLAG_USER(6) #define BUFFER_HANDOFF_NEXT_VALID (1 << LOG2_BUFFER_HANDOFF_NEXT_VALID) -#define LOG2_VNET_BUFFER_RTE_MBUF_IS_VALID LOG2_VLIB_BUFFER_FLAG_USER(7) -#define VNET_BUFFER_RTE_MBUF_IS_VALID (1 << LOG2_VNET_BUFFER_RTE_MBUF_IS_VALID) +#define LOG2_VNET_BUFFER_LOCALLY_ORIGINATED LOG2_VLIB_BUFFER_FLAG_USER(7) +#define VNET_BUFFER_LOCALLY_ORIGINATED (1 << LOG2_VNET_BUFFER_LOCALLY_ORIGINATED) #define foreach_buffer_opaque_union_subtype \ _(ethernet) \ |