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authorMatan Azrad <matan@mellanox.com>2019-07-22 14:52:23 +0000
committerFerruh Yigit <ferruh.yigit@intel.com>2019-07-23 14:31:36 +0200
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net/mlx5: zero LRO mbuf headroom
LRO packet may consume all the stride memory, hence the PMD cannot guaranty head-room for the LRO mbuf. The issue is lack in HW support to write the packet in offset from the stride start. A new striding RQ feature may be added in CX6 DX to allow head-room and tail-room for the LRO strides. Signed-off-by: Matan Azrad <matan@mellanox.com> Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
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diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
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--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -165,6 +165,7 @@ Limitations
- LRO:
+ - No mbuf headroom space is created for RX packets when LRO is configured.
- ``scatter_fcs`` is disabled when LRO is configured.
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