| Message ID | 20210218053814.1067553-1-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 | warning | WARNING: line length of 82 exceeds 80 columns WARNING: line length of 85 exceeds 80 columns |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
| netdev/stable | success | Stable not CCed |
diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h index 6fbe88306403..0d4dd9386fb1 100644 --- a/include/net/af_vsock.h +++ b/include/net/af_vsock.h @@ -136,6 +136,8 @@ struct vsock_transport { bool (*stream_allow)(u32 cid, u32 port); /* SEQ_PACKET. */ + int (*seqpacket_seq_send_len)(struct vsock_sock *vsk, size_t len, int flags); + int (*seqpacket_seq_send_eor)(struct vsock_sock *vsk, int flags); size_t (*seqpacket_seq_get_len)(struct vsock_sock *vsk); int (*seqpacket_dequeue)(struct vsock_sock *vsk, struct msghdr *msg, int flags, bool *msg_ready); diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 09b377422b1e..f352cd9d91ce 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1801,6 +1801,12 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg, if (err < 0) goto out; + if (sk->sk_type == SOCK_SEQPACKET) { + err = transport->seqpacket_seq_send_len(vsk, len, msg->msg_flags); + if (err < 0) + goto out; + } + while (total_written < len) { ssize_t written; @@ -1847,9 +1853,21 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg, } + if (sk->sk_type == SOCK_SEQPACKET) { + err = transport->seqpacket_seq_send_eor(vsk, msg->msg_flags); + if (err < 0) + goto out; + } + 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) Send record's begin/end marker. 2) Return value from enqueue function is whole record length or error for SOCK_SEQPACKET. Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com> --- include/net/af_vsock.h | 2 ++ net/vmw_vsock/af_vsock.c | 22 ++++++++++++++++++++-- 2 files changed, 22 insertions(+), 2 deletions(-)