netdev - [PATCHv4 net-next 0/4] net: common feature compute for upper interface

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Message-ID: <20251014080217.47988-1-liuhangbin@gmail.com>
Date: Tue, 14 Oct 2025 08:02:13 +0000
From: Hangbin Liu <liuhangbin@...il.com>
To: netdev@...r.kernel.org
Cc: Jay Vosburgh <jv@...sburgh.net>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Sabrina Dubroca <sdubroca@...hat.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Simon Horman <horms@...nel.org>,
	Ido Schimmel <idosch@...dia.com>,
	Shuah Khan <shuah@...nel.org>,
	Stanislav Fomichev <sdf@...ichev.me>,
	Stanislav Fomichev <stfomichev@...il.com>,
	Kuniyuki Iwashima <kuniyu@...gle.com>,
	Ahmed Zaki <ahmed.zaki@...el.com>,
	Alexander Lobakin <aleksander.lobakin@...el.com>,
	bridge@...ts.linux.dev,
	linux-kselftest@...r.kernel.org,
	Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCHv4 net-next 0/4] net: common feature compute for upper interface

Some high-level virtual drivers need to compute features from their
lower devices, but each currently has its own implementation and may
miss some feature computations. This patch set introduces a common function
to compute features for such devices.

Currently, bonding, team, and bridge have been updated to use the new
helper.

v4:
* update needed_{headroom, tailroom} in the common helper (Ido Schimmel)
* remove unneeded err in team (Stanislav Fomichev)
* remove selftest as `ethtool -k` does not test the dev->*_features. We
  can add back the selftest when there is a good way to test. (Sabrina Dubroca)

v3:
a) fix hw_enc_features asign order (Sabrina Dubroca)
b) set virtual dev feature defination in netdev_features.h (Jakub Kicinski)
c) remove unneeded err in team_del_slave (Stanislav Fomichev)
d) remove NETIF_F_HW_ESP test as it needs to be test with GSO pkts (Sabrina Dubroca)

v2:
a) remove hard_header_len setting. I will set needed_headroom for bond/team
   in a separate patch as bridge has it's own ways. (Ido Schimmel)
b) Add test file to Makefile, set RET=0 to a proper location. (Ido Schimmel)

Hangbin Liu (4):
  net: add a common function to compute features from lowers devices
  bonding: use common function to compute the features
  team: use common function to compute the features
  net: bridge: use common function to compute the features

 drivers/net/bonding/bond_main.c | 99 ++-------------------------------
 drivers/net/team/team_core.c    | 83 ++-------------------------
 include/linux/netdev_features.h | 18 ++++++
 include/linux/netdevice.h       |  1 +
 net/bridge/br_if.c              | 22 +-------
 net/core/dev.c                  | 95 +++++++++++++++++++++++++++++++
 6 files changed, 127 insertions(+), 191 deletions(-)

-- 
2.50.1