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authorDamjan Marion <damarion@cisco.com>2017-07-13 18:53:27 +0200
committerDave Barach <openvpp@barachs.net>2017-07-14 15:39:24 +0000
commit072401e8096c648b91f958bd911f64ce24fecff9 (patch)
tree5ef774bbcf5e9c072b8795d39115b012015e05f1 /src/plugins/dpdk/device/node.c
parent0f09b77778644577545235156a2ea2798ec9ee6c (diff)
Introduce l{2,3,4}_hdr_offset fields in the buffer metadata
To save space in the first cacheline following is changed: - total_length_not_including_first_buffer moved to the 2nd cacheline. This field is used only when VLIB_BUFFER_TOTAL_LENGTH_VALID and VLIB_BUFFER_NEXT_PRESENT are both set. - free_list_index is now stored in 4bits inside flags, which allows up to 16 free lists. In case we need more we can store index in the 2nd cachelin Change-Id: Ic8521350819391af470d31d3fa1013e67ecb7681 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins/dpdk/device/node.c')
-rw-r--r--src/plugins/dpdk/device/node.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/plugins/dpdk/device/node.c b/src/plugins/dpdk/device/node.c
index 69acc52964c..74fb8da1f2e 100644
--- a/src/plugins/dpdk/device/node.c
+++ b/src/plugins/dpdk/device/node.c
@@ -208,7 +208,13 @@ dpdk_process_subseq_segs (vlib_main_t * vm, vlib_buffer_t * b,
mb_seg = mb->next;
b_chain = b;
- while ((mb->nb_segs > 1) && (nb_seg < mb->nb_segs))
+ if (mb->nb_segs < 2)
+ return;
+
+ b->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ b->total_length_not_including_first_buffer = 0;
+
+ while (nb_seg < mb->nb_segs)
{
ASSERT (mb_seg != 0);