linux/drivers/net
Vinicius Costa Gomes 2707df9773 igb: Fix the transmission mode of queue 0 for Qav mode
When Qav mode is enabled, queue 0 should be kept on Stream Reservation
mode. From the i210 datasheet, section 8.12.19:

"Note: Queue0 QueueMode must be set to 1b when TransmitMode is set to
Qav." ("QueueMode 1b" represents the Stream Reservation mode)

The solution is to give queue 0 the all the credits it might need, so
it has priority over queue 1.

A situation where this can happen is when cbs is "installed" only on
queue 1, leaving queue 0 alone. For example:

$ tc qdisc replace dev enp2s0 handle 100: parent root mqprio num_tc 3 \
     	   map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@2 hw 0

$ tc qdisc replace dev enp2s0 parent 100:2 cbs locredit -1470 \
     	   hicredit 30 sendslope -980000 idleslope 20000 offload 1

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2018-04-24 08:53:19 -07:00
..
appletalk
arcnet
bonding bonding: do not set slave_dev npinfo before slave_enable_netpoll in bond_enslave 2018-04-23 11:52:35 -04:00
caif
can
dsa net: dsa: mv88e6xxx: Fix receive time stamp race condition. 2018-04-12 22:05:58 -04:00
ethernet igb: Fix the transmission mode of queue 0 for Qav mode 2018-04-24 08:53:19 -07:00
fddi
fjes
hamradio
hippi
hyperv
ieee802154
ipvlan
netdevsim
phy net: phy: marvell: clear wol event before setting it 2018-04-23 21:06:41 -04:00
plip
ppp pppoe: check sockaddr length in pppoe_connect() 2018-04-23 21:12:15 -04:00
slip
team team: fix netconsole setup over team 2018-04-24 09:36:21 -04:00
usb net: qmi_wwan: add Wistron Neweb D19Q1 2018-04-19 13:38:01 -04:00
vmxnet3 vmxnet3: fix incorrect dereference when rxvlan is disabled 2018-04-19 13:59:05 -04:00
wan
wimax
wireless
xen-netback
dummy.c
eql.c
geneve.c
gtp.c
ifb.c
Kconfig
LICENSE.SRC
loopback.c
macsec.c Revert "macsec: missing dev_put() on error in macsec_newlink()" 2018-04-16 10:01:12 -04:00
macvlan.c
macvtap.c
Makefile
mdio.c
mii.c
netconsole.c
nlmon.c
ntb_netdev.c
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c
thunderbolt.c
tun.c tun: fix vlan packet truncation 2018-04-18 13:50:29 -04:00
veth.c
virtio_net.c virtio_net: sparse annotation fix 2018-04-19 16:33:20 -04:00
vrf.c
vsockmon.c
vxlan.c
xen-netfront.c