diff options
| author | Hangbin Liu <liuhangbin@gmail.com> | 2019-10-09 15:18:28 +0300 |
|---|---|---|
| committer | Jakub Kicinski <jakub.kicinski@netronome.com> | 2019-10-10 07:13:59 +0300 |
| commit | c17e26ddc79596230834345be80fcad6c619e9ec (patch) | |
| tree | a79fe3552d3c8d031ccb9fa6dcfddf913d656faf /drivers/net/team | |
| parent | 5e96cd3302bd62b8cbfc1a7f8f8f1396d6f5e0b0 (diff) | |
| download | linux-c17e26ddc79596230834345be80fcad6c619e9ec.tar.xz | |
team: call RCU read lock when walking the port_list
Before reading the team port list, we need to acquire the RCU read lock.
Also change list_for_each_entry() to list_for_each_entry_rcu().
v2:
repost the patch to net-next and remove fixes flag as this is a cosmetic
change.
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'drivers/net/team')
| -rw-r--r-- | drivers/net/team/team.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index e8089def5a46..cb1d5fe60c31 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -2066,7 +2066,8 @@ static int team_ethtool_get_link_ksettings(struct net_device *dev, cmd->base.duplex = DUPLEX_UNKNOWN; cmd->base.port = PORT_OTHER; - list_for_each_entry(port, &team->port_list, list) { + rcu_read_lock(); + list_for_each_entry_rcu(port, &team->port_list, list) { if (team_port_txable(port)) { if (port->state.speed != SPEED_UNKNOWN) speed += port->state.speed; @@ -2075,6 +2076,8 @@ static int team_ethtool_get_link_ksettings(struct net_device *dev, cmd->base.duplex = port->state.duplex; } } + rcu_read_unlock(); + cmd->base.speed = speed ? : SPEED_UNKNOWN; return 0; |