[ovs-dev] [PATCH v3 1/3] dp-packet: preserve headroom when cloning a pkt batch

Flavio Leitner fbl at sysclose.org
Thu Jan 9 14:44:55 UTC 2020


The headroom is useful if the packet needs to insert additional
header, so preserve the original headroom when cloning the batch.

Signed-off-by: Flavio Leitner <fbl at sysclose.org>
---
 lib/dp-packet.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/dp-packet.h b/lib/dp-packet.h
index 3dd59e25d..133942155 100644
--- a/lib/dp-packet.h
+++ b/lib/dp-packet.h
@@ -879,7 +879,11 @@ dp_packet_batch_clone(struct dp_packet_batch *dst,
 
     dp_packet_batch_init(dst);
     DP_PACKET_BATCH_FOR_EACH (i, packet, src) {
-        dp_packet_batch_add(dst, dp_packet_clone(packet));
+        uint32_t headroom = dp_packet_headroom(packet);
+        struct dp_packet *pkt_clone;
+
+        pkt_clone  = dp_packet_clone_with_headroom(packet, headroom);
+        dp_packet_batch_add(dst, pkt_clone);
     }
     dst->trunc = src->trunc;
 }
-- 
2.24.1



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