> -----Original Message----- > From: Ilya Maximets [mailto:i.maxim...@samsung.com] > Sent: Thursday, November 1, 2018 11:05 AM > To: dev@dpdk.org; Zhang, Qi Z <qi.z.zh...@intel.com> > Cc: Lu, Wenzhuo <wenzhuo...@intel.com>; Ananyev, Konstantin > <konstantin.anan...@intel.com>; Laurent Hardy > <laurent.ha...@6wind.com>; Wei Dai <wei....@intel.com>; Yigit, Ferruh > <ferruh.yi...@intel.com>; Ilya Maximets <i.maxim...@samsung.com>; > sta...@dpdk.org > Subject: [PATCH v2] net/ixgbe: fix busy polling while fiber link update > > If the multispeed fiber link is in DOWN state, ixgbe_setup_link could take > around a second of busy polling. This is highly inconvenient for the case > where single thread periodically checks the link statuses. For example, OVS > main thread periodically updates the link statuses and hangs for a really long > time busy waiting on ixgbe_setup_link() for a DOWN fiber ports. For case > with 3 down ports it hangs for a 3 seconds and unable to do anything > including packet processing. > Fix that by shifting that workaround to a separate thread by alarm handler > that will try to set up link if it is DOWN. > > Fixes: c12d22f65b13 ("net/ixgbe: ensure link status is updated") > CC: sta...@dpdk.org > > Signed-off-by: Ilya Maximets <i.maxim...@samsung.com>
Applied to dpdk-next-net-intel. Thanks Qi
