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* [RFC PATCH v2 00/13] virtio/vsock: introduce SOCK_SEQPACKET support.
@ 2021-01-15  5:35 Arseny Krasnov
  2021-01-15  5:40 ` [RFC PATCH v2 01/13] af_vsock: implement 'vsock_wait_data()' Arseny Krasnov
                   ` (13 more replies)
  0 siblings, 14 replies; 22+ messages in thread
From: Arseny Krasnov @ 2021-01-15  5:35 UTC (permalink / raw)
  To: Stefan Hajnoczi, Stefano Garzarella, Michael S. Tsirkin,
	Jason Wang, David S. Miller, Jakub Kicinski, Arseny Krasnov,
	Colin Ian King, Andra Paraschiv, Jeff Vander Stoep
  Cc: kvm, virtualization, netdev, linux-kernel, stsp2, oxffffaa

	This patchset impelements support of SOCK_SEQPACKET for virtio
transport.
	As SOCK_SEQPACKET guarantees to save record boundaries, so to
do it, new packet operation was added: it marks start of record (with
record length in header), such packet doesn't carry any data.  To send
record, packet with start marker is sent first, then all data is sent
as usual 'RW' packets. On receiver's side, length of record is known
from packet with start record marker. Now as  packets of one socket
are not reordered neither on vsock nor on vhost transport layers, such
marker allows to restore original record on receiver's side. If user's
buffer is smaller that record length, when all out of size data is
dropped.
	Maximum length of datagram is not limited as in stream socket,
because same credit logic is used. Difference with stream socket is
that user is not woken up until whole record is received or error
occurred. Implementation also supports 'MSG_EOR' and 'MSG_TRUNC' flags.
	Tests also implemented.

 Arseny Krasnov (13):
  af_vsock: implement 'vsock_wait_data()'.
  af_vsock: separate rx loops for STREAM/SEQPACKET.
  af_vsock: implement rx loops entry point
  af_vsock: replace previous stream rx loop.
  af_vsock: implement send logic for SOCK_SEQPACKET
  af_vsock: general support of SOCK_SEQPACKET type.
  af_vsock: update comments for stream sockets.
  virtio/vsock: dequeue callback for SOCK_SEQPACKET.
  virtio/vsock: implement fetch of record length
  virtio/vsock: update receive logic
  virtio/vsock: rest of SOCK_SEQPACKET support
  vhost/vsock: support for SOCK_SEQPACKET socket.
  vsock_test: add SOCK_SEQPACKET tests.

 drivers/vhost/vsock.c                   |   7 +-
 include/linux/virtio_vsock.h            |  12 +
 include/net/af_vsock.h                  |   6 +
 include/uapi/linux/virtio_vsock.h       |   9 +
 net/vmw_vsock/af_vsock.c                | 483 ++++++++++++++++------
 net/vmw_vsock/virtio_transport.c        |   4 +
 net/vmw_vsock/virtio_transport_common.c | 294 +++++++++++--
 tools/testing/vsock/util.c              |  32 +-
 tools/testing/vsock/util.h              |   3 +
 tools/testing/vsock/vsock_test.c        | 126 ++++++
 10 files changed, 824 insertions(+), 152 deletions(-)

 v1 -> v2:
 - patches reordered: af_vsock.c changes now before virtio vsock
 - patches reorganized: more small patches, where +/- are not mixed
 - tests for SOCK_SEQPACKET added
 - all commit messages updated
 - af_vsock.c: 'vsock_pre_recv_check()' inlined to
   'vsock_connectible_recvmsg()'
 - af_vsock.c: 'vsock_assign_transport()' returns ENODEV if transport
   was not found
 - virtio_transport_common.c: transport callback for seqpacket dequeue
 - virtio_transport_common.c: simplified
   'virtio_transport_recv_connected()'
 - virtio_transport_common.c: send reset on socket and packet type
			      mismatch.

Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com>

-- 
2.25.1


^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, other threads:[~2021-01-18 16:48 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-15  5:35 [RFC PATCH v2 00/13] virtio/vsock: introduce SOCK_SEQPACKET support Arseny Krasnov
2021-01-15  5:40 ` [RFC PATCH v2 01/13] af_vsock: implement 'vsock_wait_data()' Arseny Krasnov
2021-01-18 14:51   ` Stefano Garzarella
2021-01-15  5:40 ` [RFC PATCH v2 02/13] af_vsock: separate rx loops for STREAM/SEQPACKET Arseny Krasnov
2021-01-18 15:04   ` Stefano Garzarella
2021-01-15  5:41 ` [RFC PATCH v2 03/13] af_vsock: implement rx loops entry point Arseny Krasnov
2021-01-15  5:41 ` [RFC PATCH v2 04/13] af_vsock: replace previous stream rx loop Arseny Krasnov
2021-01-15  5:42 ` [RFC PATCH v2 05/13] af_vsock: implement send logic for SOCK_SEQPACKET Arseny Krasnov
2021-01-15  5:42 ` [RFC PATCH v2 06/13] af_vsock: general support of SOCK_SEQPACKET type Arseny Krasnov
2021-01-18 15:12   ` Stefano Garzarella
2021-01-15  5:42 ` [RFC PATCH v2 07/13] af_vsock: update comments for stream sockets Arseny Krasnov
2021-01-15  5:43 ` [RFC PATCH v2 08/13] virtio/vsock: dequeue callback for SOCK_SEQPACKET Arseny Krasnov
2021-01-18 15:14   ` Stefano Garzarella
2021-01-15  5:43 ` [RFC PATCH v2 09/13] virtio/vsock: implement fetch of record length Arseny Krasnov
2021-01-15  5:44 ` [RFC PATCH v2 10/13] virtio/vsock: update receive logic Arseny Krasnov
2021-01-18 15:15   ` Stefano Garzarella
2021-01-15  5:44 ` [RFC PATCH v2 11/13] virtio/vsock: rest of SOCK_SEQPACKET support Arseny Krasnov
2021-01-18 15:15   ` Stefano Garzarella
2021-01-15  5:45 ` [RFC PATCH v2 12/13] vhost/vsock: support for SOCK_SEQPACKET socket Arseny Krasnov
2021-01-15  5:45 ` [RFC PATCH v2 13/13] vsock_test: add SOCK_SEQPACKET tests Arseny Krasnov
2021-01-15  9:59 ` [RFC PATCH v2 00/13] virtio/vsock: introduce SOCK_SEQPACKET support stsp
2021-01-18 15:16   ` Stefano Garzarella

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