diff options
| author | Vadim Lomovtsev <vlomovtsev@marvell.com> | 2019-02-20 11:02:44 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-22 11:43:45 -0800 |
| commit | 609ea65c65a0f801c285abf524d36d1f4635d942 (patch) | |
| tree | 442d6d2cd438caea558fb11abdb9839f83457b9c /drivers/net/ethernet/cavium/thunder/nic.h | |
| parent | 5354439612894033e3f3b934f0bc03afb5f4ddc5 (diff) | |
net: thunderx: add mutex to protect mailbox from concurrent calls for same VF
In some cases it could happen that nicvf_send_msg_to_pf() could be called
concurrently for the same NIC VF, and thus re-writing mailbox contents and
breaking messaging sequence with PF by re-writing NICVF data.
This commit is to implement mutex for NICVF to protect mailbox registers
and NICVF messaging control data from concurrent access.
Signed-off-by: Vadim Lomovtsev <vlomovtsev@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/thunder/nic.h')
| -rw-r--r-- | drivers/net/ethernet/cavium/thunder/nic.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h index 227343625e83..86cda3f4b37b 100644 --- a/drivers/net/ethernet/cavium/thunder/nic.h +++ b/drivers/net/ethernet/cavium/thunder/nic.h @@ -329,6 +329,8 @@ struct nicvf { spinlock_t rx_mode_wq_lock; /* workqueue for handling kernel ndo_set_rx_mode() calls */ struct workqueue_struct *nicvf_rx_mode_wq; + /* mutex to protect VF's mailbox contents from concurrent access */ + struct mutex rx_mode_mtx; /* PTP timestamp */ struct cavium_ptp *ptp_clock; |