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Jason Wang c81fcd4e49 virtio-net: correctly enable callback during start_xmit 
[ Upstream commit d71ebe8114b4bf622804b810f5e274069060a174 ]

Commit a7766ef18b33("virtio_net: disable cb aggressively") enables
virtqueue callback via the following statement:

        do {
		if (use_napi)
			virtqueue_disable_cb(sq->vq);

		free_old_xmit_skbs(sq, false);

	} while (use_napi && kick &&
               unlikely(!virtqueue_enable_cb_delayed(sq->vq)));

When NAPI is used and kick is false, the callback won't be enabled
here. And when the virtqueue is about to be full, the tx will be
disabled, but we still don't enable tx interrupt which will cause a TX
hang. This could be observed when using pktgen with burst enabled.

TO be consistent with the logic that tries to disable cb only for
NAPI, fixing this by trying to enable delayed callback only when NAPI
is enabled when the queue is about to be full.

Fixes: a7766ef18b ("virtio_net: disable cb aggressively")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-01 08:34:24 +01:00
..
appletalk
arcnet arcnet: fix potential memory leak in com20020_probe() 2022-11-23 12:41:54 +00:00
bonding drivers/net/bonding/bond_3ad: return when there's no aggregator 2023-01-12 12:02:28 +01:00
caif
can can: tcan4x5x: Fix use of register error status mask 2022-12-31 13:32:27 +01:00
dsa net: dsa: qca8k: fix wrong length value for mgmt eth packet 2023-01-12 12:02:47 +01:00
ethernet net: macb: fix PTP TX timestamp failure due to packet padding 2023-02-01 08:34:24 +01:00
fddi net: defxx: Fix missing err handling in dfx_init() 2022-12-31 13:32:26 +01:00
fjes net: drop the weight argument from netif_napi_add 2022-09-28 18:57:14 -07:00
hamradio hamradio: baycom_epp: Fix return type of baycom_send_packet() 2022-12-31 13:33:00 +01:00
hippi net: hippi: Add missing pci_disable_device() in rr_init_one() 2022-09-26 13:22:39 -07:00
hyperv net: hv_netvsc: Fix a warning triggered by memcpy in rndis_filter 2022-10-15 11:09:53 +01:00
ieee802154 ca8210: Fix crash by zero initializing data 2022-11-29 14:56:05 +01:00
ipa net: ipa: disable ipa interrupt during suspend 2023-02-01 08:34:22 +01:00
ipvlan ipvlan: hold lower dev to avoid possible use-after-free 2022-11-18 10:39:22 +00:00
mctp mctp: serial: Fix starting value for frame check sequence 2022-12-31 13:32:56 +01:00
mdio net: mdio: fix unbalanced fwnode reference count in mdio_device_release() 2022-12-06 12:50:00 +01:00
netdevsim netdevsim: Fix memory leak of nsim_dev->fa_cookie 2022-11-16 12:20:57 -08:00
pcs net: pcs: add new PCS driver for altera TSE PCS 2022-09-05 10:16:53 +01:00
phy net: mdio: validate parameter addr in mdiobus_get_phy() 2023-02-01 08:34:19 +01:00
plip net: plip: don't call kfree_skb/dev_kfree_skb() under spin_lock_irq() 2022-12-07 20:10:47 -08:00
ppp ppp: associate skb with a device at tx 2022-12-31 13:33:02 +01:00
pse-pd net: pse-pd: PSE_REGULATOR should depend on REGULATOR 2022-10-05 20:32:28 -07:00
slip
team Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
usb net: usb: sr9700: Handle negative len 2023-02-01 08:34:19 +01:00
vmxnet3 vmxnet3: correctly report csum_level for encapsulated packet 2023-01-12 12:01:58 +01:00
vxlan vxlan: Fix memory leaks in error path 2023-01-12 12:02:25 +01:00
wan net: wan: Add checks for NULL for utdm in undo_uhdlc_init and unmap_si_regs 2023-02-01 08:34:17 +01:00
wireguard treewide: use get_random_bytes() when possible 2022-10-11 17:42:58 -06:00
wireless wifi: rndis_wlan: Prevent buffer overflow in rndis_query_oid 2023-02-01 08:34:18 +01:00
wwan net: wwan: iosm: fix memory leak in ipc_mux_init() 2022-12-06 11:39:35 +01:00
xen-netback xen/netback: fix build warning 2022-12-07 16:03:21 +01:00
amt.c
bareudp.c
dummy.c
eql.c
geneve.c
gtp.c
ifb.c
Kconfig - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
LICENSE.SRC
loopback.c net: loopback: use NET_NAME_PREDICTABLE for name_assign_type 2022-11-25 09:39:05 +00:00
macsec.c net: macsec: fix net device access prior to holding a lock 2022-12-31 13:32:53 +01:00
macvlan.c net: macvlan: Use built-in RCU list checking 2022-11-14 10:50:02 +00:00
macvtap.c net: macvtap: add __init/__exit annotations to module init/exit funcs 2022-09-21 18:22:30 -07:00
Makefile net: add framework to support Ethernet PSE and PDs devices 2022-10-03 17:33:56 -07:00
mdio.c
mhi_net.c net: mhi: Fix memory leak in mhi_net_dellink() 2022-11-14 11:21:02 +00:00
mii.c
net_failover.c
netconsole.c
nlmon.c
ntb_netdev.c ntb_netdev: Use dev_kfree_skb_any() in interrupt context 2022-12-31 13:32:28 +01:00
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c
thunderbolt.c net: thunderbolt: fix memory leak in tbnet_open() 2022-12-08 09:07:37 -08:00
tun.c net: tun: Fix use-after-free in tun_detach() 2022-11-29 12:14:15 +01:00
veth.c veth: Fix race with AF_XDP exposing old or uninitialized descriptors 2023-01-12 12:01:59 +01:00
virtio_net.c virtio-net: correctly enable callback during start_xmit 2023-02-01 08:34:24 +01:00
vrf.c net: vrf: determine the dst using the original ifindex for multicast 2023-01-12 12:01:57 +01:00
vsockmon.c
xen-netfront.c xen-netfront: Fix NULL sring after live migration 2022-12-05 11:35:29 +00:00