linux_dsm_epyc7002/drivers/net/bonding
Eric Dumazet fe30937b65 bonding: fix bond_get_stats()
bond_get_stats() can be called from rtnetlink (with RTNL held)
or from /proc/net/dev seq handler (with RCU held)

The logic added in commit 5f0c5f73e5 ("bonding: make global bonding
stats more reliable") kind of assumed only one cpu could run there.

If multiple threads are reading /proc/net/dev, stats can be really
messed up after a while.

A second problem is that some fields are 32bit, so we need to properly
handle the wrap around problem.

Given that RTNL is not always held, we need to use
bond_for_each_slave_rcu().

Fixes: 5f0c5f73e5 ("bonding: make global bonding stats more reliable")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Andy Gospodarek <gospo@cumulusnetworks.com>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-18 23:14:15 -04:00
..
bond_3ad.c bonding: 3ad: allow to set ad_actor settings while the bond is up 2016-02-11 04:31:11 -05:00
bond_alb.c bonding: Return correct error code 2016-02-11 09:43:25 -05:00
bond_debugfs.c
bond_main.c bonding: fix bond_get_stats() 2016-03-18 23:14:15 -04:00
bond_netlink.c
bond_options.c bonding: 3ad: allow to set ad_actor settings while the bond is up 2016-02-11 04:31:11 -05:00
bond_procfs.c
bond_sysfs_slave.c
bond_sysfs.c bonding: make mii_status sysfs node consistent 2016-01-11 17:14:42 -05:00
bonding_priv.h
Makefile