diff options
| author |   Jakub Kicinski <kubakici@wp.pl> | 2014-03-15 14:55:21 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2014-03-31 15:48:00 -0700 |
| commit | 151b260c624d47b2c78b2f887e4f791c09c73c17 (patch) | |
| tree | 6cb1fcce48b87be0e4fcf8f7d5ffb592587f79bc /drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | |
| parent | ixgbe: never generate both software and hardware timestamps (diff) | |
| download | linux-dev-151b260c624d47b2c78b2f887e4f791c09c73c17.tar.xz linux-dev-151b260c624d47b2c78b2f887e4f791c09c73c17.zip | |
ixgbe: fix race conditions on queuing skb for HW time stamp
ixgbe has a single set of TX time stamping resources per NIC.
Use a simple bit lock to avoid race conditions and leaking skbs
when multiple TX rings try to claim time stamping.
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 24538cb0f856..c4b930c0ce7f 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -7042,7 +7042,9 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, tx_flags |= IXGBE_TX_FLAGS_SW_VLAN; } - if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { + if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && + !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, + &adapter->state))) { skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; tx_flags |= IXGBE_TX_FLAGS_TSTAMP; |