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linux-stable/net/vmw_vsock
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Arseniy Krasnov 94e5f64283 virtio/vsock: send credit update during setting SO_RCVLOWAT 
[ Upstream commit 0fe1798968 ]

Send credit update message when SO_RCVLOWAT is updated and it is bigger
than number of bytes in rx queue. It is needed, because 'poll()' will
wait until number of bytes in rx queue will be not smaller than
O_RCVLOWAT, so kick sender to send more data. Otherwise mutual hungup
for tx/rx is possible: sender waits for free space and receiver is
waiting data in 'poll()'.

Rename 'set_rcvlowat' callback to 'notify_set_rcvlowat' and set
'sk->sk_rcvlowat' only in one place (i.e. 'vsock_set_rcvlowat'), so the
transport doesn't need to do it.

Fixes: b89d882dc9 ("vsock/virtio: reduce credit update messages")
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-25 15:35:26 -08:00
..
af_vsock.c virtio/vsock: send credit update during setting SO_RCVLOWAT 2024-01-25 15:35:26 -08:00
af_vsock_tap.c
diag.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
hyperv_transport.c virtio/vsock: send credit update during setting SO_RCVLOWAT 2024-01-25 15:35:26 -08:00
Kconfig vsock: add vsock_loopback transport 2019-12-11 15:01:23 -08:00
Makefile vsock: support sockmap 2023-03-29 08:19:38 +01:00
virtio_transport.c virtio/vsock: send credit update during setting SO_RCVLOWAT 2024-01-25 15:35:26 -08:00
virtio_transport_common.c virtio/vsock: send credit update during setting SO_RCVLOWAT 2024-01-25 15:35:26 -08:00
vmci_transport.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-04-06 12:01:20 -07:00
vmci_transport.h vsock: Remove unused function declarations 2023-07-31 14:41:08 -07:00
vmci_transport_notify.c vmci/vsock: check SO_RCVLOWAT before wake up reader 2022-08-23 10:43:12 +02:00
vmci_transport_notify.h vsock: remove include/linux/vm_sockets.h file 2019-11-14 18:12:17 -08:00
vmci_transport_notify_qstate.c vmci/vsock: check SO_RCVLOWAT before wake up reader 2022-08-23 10:43:12 +02:00
vsock_addr.c vsock_addr: Check for supported flag values 2020-12-14 19:33:39 -08:00
vsock_bpf.c vsock: support sockmap 2023-03-29 08:19:38 +01:00
vsock_loopback.c virtio/vsock: send credit update during setting SO_RCVLOWAT 2024-01-25 15:35:26 -08:00