This patch adds mlx5 specifics description about
handling the Ethernet type by modify field action
for VLAN-ed traffic.
Fixes: 641dbe4fb053 ("net/mlx5: support modify field flow action")
Cc: sta...@dpdk.org
Signed-off-by: Viacheslav Ovsiienko <viachesl...@nvidia.com>
---
doc/guides/nics/mlx5.rst | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index 7b04e9bac5..efc971a89e 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -407,6 +407,11 @@ Limitations
- Modification of the 802.1Q Tag, VXLAN Network or GENEVE Network ID's is
not supported.
- Encapsulation levels are not supported, can modify outermost header fields
only.
- Offsets must be 32-bits aligned, cannot skip past the boundary of a field.
+ - if the field type is RTE_FLOW_FIELD_MAC_TYPE and packet contains one
+ or more VLAN headers, the meaningful type field following the the last
+ VLAN header is used as modify field operation argument. The modify field
+ action is not intended to modify VLAN headers type field, dedicated VLAN
+ push and pop actions should be used instead.
- IPv6 header item 'proto' field, indicating the next header protocol, should
not be set as extension header.
--
2.18.1
