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Date:   Thu, 11 Feb 2021 14:19:04 +0100
From:   Stefano Garzarella <sgarzare@redhat.com>
To:     Arseny Krasnov <arseny.krasnov@kaspersky.com>
Cc:     Stefan Hajnoczi <stefanha@redhat.com>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Jorgen Hansen <jhansen@vmware.com>,
        Colin Ian King <colin.king@canonical.com>,
        Andra Paraschiv <andraprs@amazon.com>,
        Jeff Vander Stoep <jeffv@google.com>, kvm@vger.kernel.org,
        virtualization@lists.linux-foundation.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, stsp2@yandex.ru, oxffffaa@gmail.com
Subject: Re: [RFC PATCH v4 08/17] af_vsock: update comments for stream sockets
Message-ID: <20210211131904.ejkq3gltlqcffduq@steredhat>
References: <20210207151259.803917-1-arseny.krasnov@kaspersky.com>
 <20210207151632.805240-1-arseny.krasnov@kaspersky.com>
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On Sun, Feb 07, 2021 at 06:16:29PM +0300, Arseny Krasnov wrote:
>This replaces 'stream' to 'connect oriented' in comments as SEQPACKET is
>also connect oriented.

I'm not a native speaker but maybe is better 'connection oriented' or 
looking at socket(2) man page 'connection-based' is also fine.

Thanks,
Stefano

>
>Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.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 c77998a14018..6e5e192cb703 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 connect 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
>@@ -479,10 +479,10 @@ 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);
>@@ -659,9 +659,10 @@ 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 connect 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);
>@@ -952,10 +953,10 @@ 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 connect 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;
>@@ -1786,7 +1787,9 @@ 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 connect oriented
>+	 * sockets.
>+	 */
> 	if (msg->msg_namelen) {
> 		err = sk->sk_state == TCP_ESTABLISHED ? -EISCONN : -EOPNOTSUPP;
> 		goto out;
>-- 
>2.25.1
>