From: David S. Miller Date: Fri, 11 Jun 2021 20:32:47 +0000 (-0700) Subject: Merge branch 'virtio-vsock-seqpacket' X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=5aa3bd9bc19e687e884f5da348a0d117b6ed1f04;p=uclinux-h8%2Flinux.git Merge branch 'virtio-vsock-seqpacket' Arseny Krasnov says: ==================== virtio/vsock: introduce SOCK_SEQPACKET support This patchset implements support of SOCK_SEQPACKET for virtio transport. As SOCK_SEQPACKET guarantees to save record boundaries, so to do it, new bit for field 'flags' was added: SEQ_EOR. This bit is set to 1 in last RW packet of message. Now as packets of one socket are not reordered neither on vsock nor on vhost transport layers, such bit allows to restore original message on receiver's side. If user's buffer is smaller than message length, when all out of size data is dropped. Maximum length of datagram is limited by 'peer_buf_alloc' value. Implementation also supports 'MSG_TRUNC' flags. Tests also implemented. Thanks to stsp2@yandex.ru for encouragements and initial design recommendations. ==================== Signed-off-by: David S. Miller --- 5aa3bd9bc19e687e884f5da348a0d117b6ed1f04