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| author | Arthur Kiyanovski <akiyano@amazon.com> | 2020-02-11 15:17:49 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-02-11 17:08:31 -0800 |
| commit | 470793a78ce344bd53d31e0c2d537f71ba957547 (patch) | |
| tree | 994fdce45471d70e531eb6bd3ec6067661fc5fb3 /drivers/net/ethernet | |
| parent | e3f89f91e98ce07dc0f121a3b70d21aca749ba39 (diff) | |
| download | linux-470793a78ce344bd53d31e0c2d537f71ba957547.tar.gz linux-470793a78ce344bd53d31e0c2d537f71ba957547.tar.bz2 linux-470793a78ce344bd53d31e0c2d537f71ba957547.zip | |
net: ena: make ena rxfh support ETH_RSS_HASH_NO_CHANGE
As the name suggests ETH_RSS_HASH_NO_CHANGE is received upon changing
the key or indirection table using ethtool while keeping the same hash
function.
Also add a function for retrieving the current hash function from
the ena-com layer.
Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: Saeed Bshara <saeedb@amazon.com>
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_com.c | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_com.h | 8 | ||||
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_ethtool.c | 3 |
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c index 74743fd8a1e0..0f93d1092435 100644 --- a/drivers/net/ethernet/amazon/ena/ena_com.c +++ b/drivers/net/ethernet/amazon/ena/ena_com.c @@ -1041,6 +1041,11 @@ static int ena_com_get_feature(struct ena_com_dev *ena_dev, feature_ver); } +int ena_com_get_current_hash_function(struct ena_com_dev *ena_dev) +{ + return ena_dev->rss.hash_func; +} + static void ena_com_hash_key_fill_default_key(struct ena_com_dev *ena_dev) { struct ena_admin_feature_rss_flow_hash_control *hash_key = diff --git a/drivers/net/ethernet/amazon/ena/ena_com.h b/drivers/net/ethernet/amazon/ena/ena_com.h index 9b5bd28ed0ac..469f298199a7 100644 --- a/drivers/net/ethernet/amazon/ena/ena_com.h +++ b/drivers/net/ethernet/amazon/ena/ena_com.h @@ -656,6 +656,14 @@ int ena_com_rss_init(struct ena_com_dev *ena_dev, u16 log_size); */ void ena_com_rss_destroy(struct ena_com_dev *ena_dev); +/* ena_com_get_current_hash_function - Get RSS hash function + * @ena_dev: ENA communication layer struct + * + * Return the current hash function. + * @return: 0 or one of the ena_admin_hash_functions values. + */ +int ena_com_get_current_hash_function(struct ena_com_dev *ena_dev); + /* ena_com_fill_hash_function - Fill RSS hash function * @ena_dev: ENA communication layer struct * @func: The hash function (Toeplitz or crc) diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c index 9a7a6ef39f9a..452b0e770370 100644 --- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c +++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c @@ -736,6 +736,9 @@ static int ena_set_rxfh(struct net_device *netdev, const u32 *indir, } switch (hfunc) { + case ETH_RSS_HASH_NO_CHANGE: + func = ena_com_get_current_hash_function(ena_dev); + break; case ETH_RSS_HASH_TOP: func = ENA_ADMIN_TOEPLITZ; break; |