netdev - Re: [RFC PATCH v5 08/19] af_vsock: update comments for stream sockets

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Message-ID: <20210222141809.6wcvglet4cpmcjlg@steredhat>
Date:   Mon, 22 Feb 2021 15:18:09 +0100
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     Arseny Krasnov <arseny.krasnov@...persky.com>
Cc:     Stefan Hajnoczi <stefanha@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jorgen Hansen <jhansen@...are.com>,
        Norbert Slusarek <nslusarek@....net>,
        Colin Ian King <colin.king@...onical.com>,
        Andra Paraschiv <andraprs@...zon.com>, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, stsp2@...dex.ru, oxffffaa@...il.com
Subject: Re: [RFC PATCH v5 08/19] af_vsock: update comments for stream sockets

On Thu, Feb 18, 2021 at 08:38:48AM +0300, Arseny Krasnov wrote:
>This replaces 'stream' to 'connect oriented' in comments as SEQPACKET is
                             ^ connection

You forgot to update the commit message :-)

With that fixed:

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

>also connect oriented.
>
>Signed-off-by: Arseny Krasnov <arseny.krasnov@...persky.com>
>---
> net/vmw_vsock/af_vsock.c | 31 +++++++++++++++++--------------
> 1 file changed, 17 insertions(+), 14 deletions(-)
>
>diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
>index f4b02c6d35d1..f1bf6a5ad15e 100644
>--- a/net/vmw_vsock/af_vsock.c
>+++ b/net/vmw_vsock/af_vsock.c
>@@ -415,8 +415,8 @@ static void vsock_deassign_transport(struct vsock_sock *vsk)
>
> /* Assign a transport to a socket and call the .init transport callback.
>  *
>- * Note: for stream socket this must be called when vsk->remote_addr is set
>- * (e.g. during the connect() or when a connection request on a listener
>+ * Note: for connection oriented socket this must be called when vsk->remote_addr
>+ * is set (e.g. during the connect() or when a connection request on a listener
>  * socket is received).
>  * The vsk->remote_addr is used to decide which transport to use:
>  *  - remote CID == VMADDR_CID_LOCAL or g2h->local_cid or VMADDR_CID_HOST if
>@@ -470,10 +470,10 @@ int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk)
> 			return 0;
>
> 		/* transport->release() must be called with sock lock acquired.
>-		 * This path can only be taken during vsock_stream_connect(),
>-		 * where we have already held the sock lock.
>-		 * In the other cases, this function is called on a new socket
>-		 * which is not assigned to any transport.
>+		 * This path can only be taken during vsock_connect(), where we
>+		 * have already held the sock lock. In the other cases, this
>+		 * function is called on a new socket which is not assigned to
>+		 * any transport.
> 		 */
> 		vsk->transport->release(vsk);
> 		vsock_deassign_transport(vsk);
>@@ -658,9 +658,10 @@ static int __vsock_bind_connectible(struct vsock_sock *vsk,
>
> 	vsock_addr_init(&vsk->local_addr, new_addr.svm_cid, new_addr.svm_port);
>
>-	/* Remove stream sockets from the unbound list and add them to the hash
>-	 * table for easy lookup by its address.  The unbound list is simply an
>-	 * extra entry at the end of the hash table, a trick used by AF_UNIX.
>+	/* Remove connection oriented sockets from the unbound list and add them
>+	 * to the hash table for easy lookup by its address.  The unbound list
>+	 * is simply an extra entry at the end of the hash table, a trick used
>+	 * by AF_UNIX.
> 	 */
> 	__vsock_remove_bound(vsk);
> 	__vsock_insert_bound(vsock_bound_sockets(&vsk->local_addr), vsk);
>@@ -951,10 +952,10 @@ static int vsock_shutdown(struct socket *sock, int mode)
> 	if ((mode & ~SHUTDOWN_MASK) || !mode)
> 		return -EINVAL;
>
>-	/* If this is a STREAM socket and it is not connected then bail out
>-	 * immediately.  If it is a DGRAM socket then we must first kick the
>-	 * socket so that it wakes up from any sleeping calls, for example
>-	 * recv(), and then afterwards return the error.
>+	/* If this is a connection oriented socket and it is not connected then
>+	 * bail out immediately.  If it is a DGRAM socket then we must first
>+	 * kick the socket so that it wakes up from any sleeping calls, for
>+	 * example recv(), and then afterwards return the error.
> 	 */
>
> 	sk = sock->sk;
>@@ -1783,7 +1784,9 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg,
>
> 	transport = vsk->transport;
>
>-	/* Callers should not provide a destination with stream sockets. */
>+	/* Callers should not provide a destination with connection oriented
>+	 * sockets.
>+	 */
> 	if (msg->msg_namelen) {
> 		err = sk->sk_state == TCP_ESTABLISHED ? -EISCONN : -EOPNOTSUPP;
> 		goto out;
>-- 
>2.25.1
>