| Message ID | 20210323131045.2460319-1-arseny.krasnov@kaspersky.com (mailing list archive) |
|---|---|
| State | RFC |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | virtio/vsock: introduce SOCK_SEQPACKET support | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | fail | Series longer than 15 patches |
| netdev/tree_selection | success | Guessed tree name to be net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | success | CCed 8 of 8 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 44 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
On Tue, Mar 23, 2021 at 04:10:42PM +0300, Arseny Krasnov wrote: >This adds some logic to current stream enqueue function for SEQPACKET >support: >1) Use transport's seqpacket enqueue callback. >2) Return value from enqueue function is whole record length or error > for SOCK_SEQPACKET. > >Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com> >--- > v6 -> v7: > 'seqpacket_enqueue' callback interface changed, 'flags' argument was > removed, because it was 'msg_flags' field of 'msg' argument which is > already exists. > > include/net/af_vsock.h | 2 ++ > net/vmw_vsock/af_vsock.c | 21 +++++++++++++++------ > 2 files changed, 17 insertions(+), 6 deletions(-) Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h index 7232f6c42a36..b7063820d0bc 100644 --- a/include/net/af_vsock.h +++ b/include/net/af_vsock.h @@ -138,6 +138,8 @@ struct vsock_transport { /* SEQ_PACKET. */ int (*seqpacket_dequeue)(struct vsock_sock *vsk, struct msghdr *msg, int flags, bool *msg_ready, size_t *record_len); + int (*seqpacket_enqueue)(struct vsock_sock *vsk, struct msghdr *msg, + size_t len); /* Notification. */ int (*notify_poll_in)(struct vsock_sock *, size_t, bool *); diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 617ffe42693d..a98e5daa06b7 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1830,9 +1830,13 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg, * responsibility to check how many bytes we were able to send. */ - written = transport->stream_enqueue( - vsk, msg, - len - total_written); + if (sk->sk_type == SOCK_SEQPACKET) { + written = transport->seqpacket_enqueue(vsk, + msg, len - total_written); + } else { + written = transport->stream_enqueue(vsk, + msg, len - total_written); + } if (written < 0) { err = -ENOMEM; goto out_err; @@ -1844,12 +1848,17 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg, vsk, written, &send_data); if (err < 0) goto out_err; - } out_err: - if (total_written > 0) - err = total_written; + if (total_written > 0) { + /* Return number of written bytes only if: + * 1) SOCK_STREAM socket. + * 2) SOCK_SEQPACKET socket when whole buffer is sent. + */ + if (sk->sk_type == SOCK_STREAM || total_written == len) + err = total_written; + } out: release_sock(sk); return err;
This adds some logic to current stream enqueue function for SEQPACKET support: 1) Use transport's seqpacket enqueue callback. 2) Return value from enqueue function is whole record length or error for SOCK_SEQPACKET. Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com> --- v6 -> v7: 'seqpacket_enqueue' callback interface changed, 'flags' argument was removed, because it was 'msg_flags' field of 'msg' argument which is already exists. include/net/af_vsock.h | 2 ++ net/vmw_vsock/af_vsock.c | 21 +++++++++++++++------ 2 files changed, 17 insertions(+), 6 deletions(-)