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net/mlx5e: Support ETH_RSS_HASH_XOR

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The ConnectX-4 HW implements inverted XOR8.
To make it act as XOR we re-order the HW RSS indirection table.

Set XOR to be the default RSS hash function and add ethtool API to
control it.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Saeed Mahameed
2015-07-23 23:35:56 +03:00
committed by David S. Miller
parent fda19e83fb
commit 2be6967cdb
4 changed files with 79 additions and 13 deletions
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6
include/linux/mlx5/mlx5_ifc.h
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@@ -1936,9 +1936,9 @@ enum {
};
enum {
MLX5_TIRC_RX_HASH_FN_HASH_NONE = 0x0,
MLX5_TIRC_RX_HASH_FN_HASH_INVERTED_XOR8 = 0x1,
MLX5_TIRC_RX_HASH_FN_HASH_TOEPLITZ = 0x2,
MLX5_RX_HASH_FN_NONE = 0x0,
MLX5_RX_HASH_FN_INVERTED_XOR8 = 0x1,
MLX5_RX_HASH_FN_TOEPLITZ = 0x2,
};
enum {