Re: [RFC PATCH v5 01/19] af_vsock: update functions for connectible socket

Stefano Garzarella
2021-02-22T10:52:21Z

On Thu, Feb 18, 2021 at 08:36:03AM +0300, Arseny Krasnov wrote:
>This prepares af_vsock.c for SEQPACKET support: some functions such
>as setsockopt(), getsockopt(), connect(), recvmsg(), sendmsg() are
>shared between both types of sockets, so rename them in general
>manner.
>
>Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com>
>---
> net/vmw_vsock/af_vsock.c | 64 +++++++++++++++++++++-------------------
> 1 file changed, 34 insertions(+), 30 deletions(-)

IIRC I had already given my R-b to this patch. Please carry it over when
you post a new version.

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>

Thanks,
Stefano

>
>diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
>index 5546710d8ac1..656370e11707 100644
>--- a/net/vmw_vsock/af_vsock.c
>+++ b/net/vmw_vsock/af_vsock.c
>@@ -604,8 +604,8 @@ static void vsock_pending_work(struct work_struct *work)
>
> /**** SOCKET OPERATIONS ****/
>
>-static int __vsock_bind_stream(struct vsock_sock *vsk,
>- struct sockaddr_vm *addr)
>+static int __vsock_bind_connectible(struct vsock_sock *vsk,
>+ struct sockaddr_vm *addr)
> {
> static u32 port;
> struct sockaddr_vm new_addr;
>@@ -685,7 +685,7 @@ static int __vsock_bind(struct sock *sk, struct sockaddr_vm *addr)
> switch (sk->sk_socket->type) {
> case SOCK_STREAM:
> spin_lock_bh(&vsock_table_lock);
>- retval = __vsock_bind_stream(vsk, addr);
>+ retval = __vsock_bind_connectible(vsk, addr);
> spin_unlock_bh(&vsock_table_lock);
> break;
>
>@@ -767,6 +767,11 @@ static struct sock *__vsock_create(struct net *net,
> return sk;
> }
>
>+static bool sock_type_connectible(u16 type)
>+{
>+ return type == SOCK_STREAM;
>+}
>+
> static void __vsock_release(struct sock *sk, int level)
> {
> if (sk) {
>@@ -785,7 +790,7 @@ static void __vsock_release(struct sock *sk, int level)
>
> if (vsk->transport)
> vsk->transport->release(vsk);
>- else if (sk->sk_type == SOCK_STREAM)
>+ else if (sock_type_connectible(sk->sk_type))
> vsock_remove_sock(vsk);
>
> sock_orphan(sk);
>@@ -947,7 +952,7 @@ static int vsock_shutdown(struct socket *sock, int mode)
> lock_sock(sk);
> if (sock->state == SS_UNCONNECTED) {
> err = -ENOTCONN;
>- if (sk->sk_type == SOCK_STREAM)
>+ if (sock_type_connectible(sk->sk_type))
> goto out;
> } else {
> sock->state = SS_DISCONNECTING;
>@@ -960,7 +965,7 @@ static int vsock_shutdown(struct socket *sock, int mode)
> sk->sk_shutdown |= mode;
> sk->sk_state_change(sk);
>
>- if (sk->sk_type == SOCK_STREAM) {
>+ if (sock_type_connectible(sk->sk_type)) {
> sock_reset_flag(sk, SOCK_DONE);
> vsock_send_shutdown(sk, mode);
> }
>@@ -1015,7 +1020,7 @@ static __poll_t vsock_poll(struct file *file, struct socket *sock,
> if (!(sk->sk_shutdown & SEND_SHUTDOWN))
> mask |= EPOLLOUT | EPOLLWRNORM | EPOLLWRBAND;
>
>- } else if (sock->type == SOCK_STREAM) {
>+ } else if (sock_type_connectible(sk->sk_type)) {
> const struct vsock_transport *transport;
>
> lock_sock(sk);
>@@ -1262,8 +1267,8 @@ static void vsock_connect_timeout(struct work_struct *work)
> sock_put(sk);
> }
>
>-static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
>- int addr_len, int flags)
>+static int vsock_connect(struct socket *sock, struct sockaddr *addr,
>+ int addr_len, int flags)
> {
> int err;
> struct sock *sk;
>@@ -1413,7 +1418,7 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags,
>
> lock_sock(listener);
>
>- if (sock->type != SOCK_STREAM) {
>+ if (!sock_type_connectible(sock->type)) {
> err = -EOPNOTSUPP;
> goto out;
> }
>@@ -1490,7 +1495,7 @@ static int vsock_listen(struct socket *sock, int backlog)
>
> lock_sock(sk);
>
>- if (sock->type != SOCK_STREAM) {
>+ if (!sock_type_connectible(sk->sk_type)) {
> err = -EOPNOTSUPP;
> goto out;
> }
>@@ -1534,11 +1539,11 @@ static void vsock_update_buffer_size(struct vsock_sock *vsk,
> vsk->buffer_size = val;
> }
>
>-static int vsock_stream_setsockopt(struct socket *sock,
>- int level,
>- int optname,
>- sockptr_t optval,
>- unsigned int optlen)
>+static int vsock_connectible_setsockopt(struct socket *sock,
>+ int level,
>+ int optname,
>+ sockptr_t optval,
>+ unsigned int optlen)
> {
> int err;
> struct sock *sk;
>@@ -1616,10 +1621,10 @@ static int vsock_stream_setsockopt(struct socket *sock,
> return err;
> }
>
>-static int vsock_stream_getsockopt(struct socket *sock,
>- int level, int optname,
>- char __user *optval,
>- int __user *optlen)
>+static int vsock_connectible_getsockopt(struct socket *sock,
>+ int level, int optname,
>+ char __user *optval,
>+ int __user *optlen)
> {
> int err;
> int len;
>@@ -1687,8 +1692,8 @@ static int vsock_stream_getsockopt(struct socket *sock,
> return 0;
> }
>
>-static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
>- size_t len)
>+static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg,
>+ size_t len)
> {
> struct sock *sk;
> struct vsock_sock *vsk;
>@@ -1827,10 +1832,9 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
> return err;
> }
>
>-
> static int
>-vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
>- int flags)
>+vsock_connectible_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
>+ int flags)
> {
> struct sock *sk;
> struct vsock_sock *vsk;
>@@ -2006,7 +2010,7 @@ static const struct proto_ops vsock_stream_ops = {
> .owner = THIS_MODULE,
> .release = vsock_release,
> .bind = vsock_bind,
>- .connect = vsock_stream_connect,
>+ .connect = vsock_connect,
> .socketpair = sock_no_socketpair,
> .accept = vsock_accept,
> .getname = vsock_getname,
>@@ -2014,10 +2018,10 @@ static const struct proto_ops vsock_stream_ops = {
> .ioctl = sock_no_ioctl,
> .listen = vsock_listen,
> .shutdown = vsock_shutdown,
>- .setsockopt = vsock_stream_setsockopt,
>- .getsockopt = vsock_stream_getsockopt,
>- .sendmsg = vsock_stream_sendmsg,
>- .recvmsg = vsock_stream_recvmsg,
>+ .setsockopt = vsock_connectible_setsockopt,
>+ .getsockopt = vsock_connectible_getsockopt,
>+ .sendmsg = vsock_connectible_sendmsg,
>+ .recvmsg = vsock_connectible_recvmsg,
> .mmap = sock_no_mmap,
> .sendpage = sock_no_sendpage,
> };
>--
>2.25.1
>