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| author | Kohei Enju <enjuk@amazon.com> | 2025-09-29 14:02:22 +0900 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-09-29 18:33:53 -0700 |
| commit | f017156aea60db8720e47591ed1e041993381ad2 (patch) | |
| tree | 7aa09bb7ed43c983bdf99912791b5b109c6ed7d0 /rust/helpers/mutex.c | |
| parent | 8425161ac1204d2185e0a10f5ae652bae75d2451 (diff) | |
net: ena: return 0 in ena_get_rxfh_key_size() when RSS hash key is not configurable
In EC2 instances where the RSS hash key is not configurable, ethtool
shows bogus RSS hash key since ena_get_rxfh_key_size() unconditionally
returns ENA_HASH_KEY_SIZE.
Commit 6a4f7dc82d1e ("net: ena: rss: do not allocate key when not
supported") added proper handling for devices that don't support RSS
hash key configuration, but ena_get_rxfh_key_size() has been unchanged.
When the RSS hash key is not configurable, return 0 instead of
ENA_HASH_KEY_SIZE to clarify getting the value is not supported.
Tested on m5 instance families.
Without patch:
# ethtool -x ens5 | grep -A 1 "RSS hash key"
RSS hash key:
00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00
With patch:
# ethtool -x ens5 | grep -A 1 "RSS hash key"
RSS hash key:
Operation not supported
Fixes: 6a4f7dc82d1e ("net: ena: rss: do not allocate key when not supported")
Signed-off-by: Kohei Enju <enjuk@amazon.com>
Link: https://patch.msgid.link/20250929050247.51680-1-enjuk@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'rust/helpers/mutex.c')
0 files changed, 0 insertions, 0 deletions