netdev - [PATCHv3 net 0/4] bonding: fix send_peer

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Date: Tue,  9 May 2023 11:11:56 +0800
From: Hangbin Liu <liuhangbin@...il.com>
To: netdev@...r.kernel.org
Cc: Jay Vosburgh <j.vosburgh@...il.com>,
	"David S . Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Liang Li <liali@...hat.com>,
	Vincent Bernat <vincent@...nat.ch>,
	Simon Horman <simon.horman@...igine.com>,
	Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCHv3 net 0/4] bonding: fix send_peer_notif overflow

Bonding send_peer_notif was defined as u8. But the value is
num_peer_notif multiplied by peer_notif_delay, which is u8 * u32.
This would cause the send_peer_notif overflow.

Before the fix:
TEST: num_grat_arp (active-backup miimon num_grat_arp 10)           [ OK ]
TEST: num_grat_arp (active-backup miimon num_grat_arp 20)           [ OK ]
4 garp packets sent on active slave eth1
TEST: num_grat_arp (active-backup miimon num_grat_arp 30)           [FAIL]
24 garp packets sent on active slave eth1
TEST: num_grat_arp (active-backup miimon num_grat_arp 50)           [FAIL]

After the fix:
TEST: num_grat_arp (active-backup miimon num_grat_arp 10)           [ OK ]
TEST: num_grat_arp (active-backup miimon num_grat_arp 20)           [ OK ]
TEST: num_grat_arp (active-backup miimon num_grat_arp 30)           [ OK ]
TEST: num_grat_arp (active-backup miimon num_grat_arp 50)           [ OK ]

Hangbin Liu (4):
  bonding: fix send_peer_notif overflow
  Documentation: bonding: fix the doc of peer_notif_delay
  selftests: forwarding: lib: add netns support for tc rule handle stats
    get
  kselftest: bonding: add num_grat_arp test

 Documentation/networking/bonding.rst          |  9 ++--
 drivers/net/bonding/bond_netlink.c            |  7 ++-
 drivers/net/bonding/bond_options.c            |  8 ++-
 include/net/bonding.h                         |  2 +-
 .../drivers/net/bonding/bond_options.sh       | 50 +++++++++++++++++++
 .../drivers/net/bonding/bond_topo_3d1c.sh     |  2 +
 tools/testing/selftests/net/forwarding/lib.sh |  3 +-
 7 files changed, 73 insertions(+), 8 deletions(-)

-- 
2.38.1