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netdev: preserve NETIF_F_ALL_FOR_ALL across TSO updates

Directly increment the TSO features incurs a side effect: it will also
directly clear the flags in NETIF_F_ALL_FOR_ALL on the master device,
which can cause issues such as the inability to enable the nocache copy
feature on the bonding driver.

The fix is to include NETIF_F_ALL_FOR_ALL in the update mask, thereby
preventing it from being cleared.

Fixes: b0ce3508b25e ("bonding: allow TSO being set on bonding master")
Signed-off-by: Di Zhu <zhud@hygon.cn>
Link: https://patch.msgid.link/20251224012224.56185-1-zhud@hygon.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

authored by

Di Zhu and committed by
Jakub Kicinski 02d1e1a3 2a71a1a8

+2 -1
+2 -1
include/linux/netdevice.h
··· 5323 5323 static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, 5324 5324 netdev_features_t mask) 5325 5325 { 5326 - return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); 5326 + return netdev_increment_features(features, NETIF_F_ALL_TSO | 5327 + NETIF_F_ALL_FOR_ALL, mask); 5327 5328 } 5328 5329 5329 5330 int __netdev_update_features(struct net_device *dev);