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authorJesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>2018-07-26 10:20:38 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2018-08-24 08:52:35 -0700
commita798fbac33c4cbfe7d539298623b7af6c3f9525a (patch)
tree0b979f2a3de6dc99b44151de43980cce0690b95b /drivers/net/ethernet/intel/igb/igb_main.c
parente1000: ensure to free old tx/rx rings in set_ringparam() (diff)
downloadlinux-dev-a798fbac33c4cbfe7d539298623b7af6c3f9525a.tar.xz
linux-dev-a798fbac33c4cbfe7d539298623b7af6c3f9525a.zip
igb: Use an advanced ctx descriptor for launchtime
On i210, Launchtime (TxTime) requires the usage of an "Advanced Transmit Context Descriptor" for retrieving the timestamp of a packet. The igb driver correctly builds such descriptor on the segmentation flow (i.e. igb_tso()) or on the checksum one (i.e. igb_tx_csum()), but the feature is broken for AF_PACKET if the IGB_TX_FLAGS_VLAN is not set, which happens due to an early return on igb_tx_csum(). This flag is only set by the kernel when a VLAN interface is used, thus we can't just rely on it. Here we are fixing this issue by checking if launchtime is enabled for the current tx_ring before performing the early return. Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to '')
-rw-r--r--drivers/net/ethernet/intel/igb/igb_main.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index d03c2f0d7592..74416f8a9446 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -5816,7 +5816,8 @@ static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first)
if (skb->ip_summed != CHECKSUM_PARTIAL) {
csum_failed:
- if (!(first->tx_flags & IGB_TX_FLAGS_VLAN))
+ if (!(first->tx_flags & IGB_TX_FLAGS_VLAN) &&
+ !tx_ring->launchtime_enable)
return;
goto no_csum;
}