diff options
| author | Filip Pokryvka <fpokryvk@redhat.com> | 2021-12-10 18:50:32 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-12-10 21:23:05 -0800 |
| commit | ee60e626d536da4c710b3634afe68fe7c6d69b59 (patch) | |
| tree | 75a306c280d1fc067f64cdd6a59c82c044a79eb3 /drivers/net/netdevsim/ethtool.c | |
| parent | 94f2a444f28a649926c410eb9a38afb13a83ebe0 (diff) | |
| download | linux-ee60e626d536da4c710b3634afe68fe7c6d69b59.tar.bz2 | |
netdevsim: don't overwrite read only ethtool parms
Ethtool ring feature has _max_pending attributes read-only.
Set only read-write attributes in nsim_set_ringparam.
This patch is useful, if netdevsim device is set-up using NetworkManager,
because NetworkManager sends 0 as MAX values, as it is pointless to
retrieve them in extra call, because they should be read-only. Then,
the device is left in incosistent state (value > MAX).
Fixes: a7fc6db099b5 ("netdevsim: support ethtool ring and coalesce settings")
Signed-off-by: Filip Pokryvka <fpokryvk@redhat.com>
Link: https://lore.kernel.org/r/20211210175032.411872-1-fpokryvk@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/netdevsim/ethtool.c')
| -rw-r--r-- | drivers/net/netdevsim/ethtool.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/netdevsim/ethtool.c b/drivers/net/netdevsim/ethtool.c index 0ab6a40be611..a6a713b31aad 100644 --- a/drivers/net/netdevsim/ethtool.c +++ b/drivers/net/netdevsim/ethtool.c @@ -77,7 +77,10 @@ static int nsim_set_ringparam(struct net_device *dev, { struct netdevsim *ns = netdev_priv(dev); - memcpy(&ns->ethtool.ring, ring, sizeof(ns->ethtool.ring)); + ns->ethtool.ring.rx_pending = ring->rx_pending; + ns->ethtool.ring.rx_jumbo_pending = ring->rx_jumbo_pending; + ns->ethtool.ring.rx_mini_pending = ring->rx_mini_pending; + ns->ethtool.ring.tx_pending = ring->tx_pending; return 0; } |