ethtool: rss: fix rss key initialization warning

This warning is emitted when a driver does not default populate an rss
key when one is not provided from userspace. Some devices do not
support individual rss keys per context. For these devices, it is ok
to leave the key zeroed out in ethtool_rxfh_context. Do not warn on
zeroed key when ethtool_ops.rxfh_per_ctx_key == 0.

Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20241003162310.1310576-1-daniel.zahka@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Daniel Zahka 2024-10-03 09:23:10 -07:00 committed by Jakub Kicinski
parent 00110c5eeb
commit 5c2ab978f9

View File

@ -1505,6 +1505,7 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
extack);
/* Make sure driver populates defaults */
WARN_ON_ONCE(!ret && !rxfh_dev.key &&
ops->rxfh_per_ctx_key &&
!memchr_inv(ethtool_rxfh_context_key(ctx),
0, ctx->key_size));
} else if (rxfh_dev.rss_delete) {