From: sven.auha...@voleatech.de <sven.auha...@voleatech.de> Sent: Wednesday, November 11, 2020 10:35 PM To: Nguyen, Anthony L <anthony.l.ngu...@intel.com>; Fijalkowski, Maciej <maciej.fijalkow...@intel.com>; k...@kernel.org Cc: da...@davemloft.net; intel-wired-...@lists.osuosl.org; netdev@vger.kernel.org; nhor...@redhat.com; sassm...@redhat.com; Penigalapati, Sandeep <sandeep.penigalap...@intel.com>; bro...@redhat.com; pmen...@molgen.mpg.de Subject: [PATCH v4 6/6] igb: avoid transmit queue timeout in xdp path
From: Sven Auhagen <sven.auha...@voleatech.de> Since we share the transmit queue with the network stack, it is possible that we run into a transmit queue timeout. This will reset the queue. This happens under high load when XDP is using the transmit queue pretty much exclusively. netdev_start_xmit() sets the trans_start variable of the transmit queue to jiffies which is later utilized by dev_watchdog(), so to avoid timeout, let stack know that XDP xmit happened by bumping the trans_start within XDP Tx routines to jiffies. Acked-by: Maciej Fijalkowski <maciej.fijalkow...@intel.com> Signed-off-by: Sven Auhagen <sven.auha...@voleatech.de> --- drivers/net/ethernet/intel/igb/igb_main.c | 5 +++++ 1 file changed, 5 insertions(+) Tested-by: Sandeep Penigalapati <sandeep.penigalap...@intel.com>
