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45ab4b13e4
linux/drivers/net
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Lars Persson 45ab4b13e4 stmmac: reset last TSO segment size after device open 
The mss variable tracks the last max segment size sent to the TSO
engine. We do not update the hardware as long as we receive skb:s with
the same value in gso_size.

During a network device down/up cycle (mapped to stmmac_release() and
stmmac_open() callbacks) we issue a reset to the hardware and it
forgets the setting for mss. However we did not zero out our mss
variable so the next transmission of a gso packet happens with an
undefined hardware setting.

This triggers a hang in the TSO engine and eventuelly the netdev
watchdog will bark.

Fixes: f748be531d ("stmmac: support new GMAC4")
Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-03 09:47:42 -05:00
..
appletalk Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
arcnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
bonding bonding: use nla_get_u64 to extract the value for IFLA_BOND_AD_ACTOR_SYSTEM 2017-11-28 15:56:40 -05:00
caif treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
can Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-12 09:17:05 +09:00
cris drivers/net: cris: Convert timers to use timer_setup() 2017-11-21 15:46:44 -08:00
dsa net: dsa: bcm_sf2: Set correct CHAIN_ID and slice number mask 2017-11-30 14:21:35 -05:00
ethernet stmmac: reset last TSO segment size after device open 2017-12-03 09:47:42 -05:00
fddi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fjes
hamradio treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
hippi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
hyperv hv_netvsc: preserve hw_features on mtu/channels/ringparam changes 2017-11-16 10:49:00 +09:00
ieee802154 ieee802154: ca8210: use __func__ macro for debug messages 2017-11-06 16:39:14 +01:00
ipvlan ipvlan: Add the skb->mark as flow4's member to lookup route 2017-12-03 09:44:02 -05:00
phy phylink: ensure we take the link down when phylink_stop() is called 2017-12-01 15:18:42 -05:00
plip net: plip: mark expected switch fall-throughs 2017-11-05 22:19:00 +09:00
ppp ppp: exit_net cleanup checks added 2017-11-14 15:46:17 +09:00
slip treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
team Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
usb net: qmi_wwan: add Quectel BG96 2c7c:0296 2017-11-21 20:17:47 +09:00
vmxnet3
wan Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-29 13:10:25 -08:00
wimax License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-29 13:10:25 -08:00
xen-netback Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-22 13:39:14 +01:00
dummy.c
eql.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
geneve.c geneve: only configure or fill UDP_ZERO_CSUM6_RX/TX info when CONFIG_IPV6 2017-11-24 03:29:22 +09:00
gtp.c
ifb.c
Kconfig
LICENSE.SRC
loopback.c
macsec.c genetlink: fix genlmsg_nlhdr() 2017-11-16 10:49:00 +09:00
macvlan.c macvlan/macvtap: Add support for L2 forwarding offloads with macvtap 2017-10-19 12:43:59 +01:00
macvtap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-30 21:09:24 +09:00
Makefile Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
mdio.c
mii.c
netconsole.c netconsole: make config_item_type const 2017-10-19 16:15:20 +02:00
nlmon.c
ntb_netdev.c drivers/net: ntb_netdev: Convert timers to use timer_setup() 2017-11-01 12:38:45 +09:00
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c tap: free skb if flags error 2017-12-02 21:31:03 -05:00
thunderbolt.c net: thunderbolt: Stop using zero to mean no valid DMA mapping 2017-11-25 23:56:02 +09:00
tun.c tun: free skb in early errors 2017-12-02 21:31:03 -05:00
veth.c
virtio_net.c Merge branch 'akpm' (patches from Andrew) 2017-11-15 19:42:40 -08:00
vrf.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
vsockmon.c
vxlan.c vxlan: use __be32 type for the param vni in __vxlan_fdb_delete 2017-11-28 15:57:12 -05:00
xen-netfront.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-29 13:10:25 -08:00