summaryrefslogtreecommitdiffstats
path: root/net/vmw_vsock
diff options
context:
space:
mode:
authorStefano Garzarella <sgarzare@redhat.com>2019-11-14 10:57:40 +0100
committerDavid S. Miller <davem@davemloft.net>2019-11-14 18:12:18 -0800
commit4c7246dc45e2706770d5233f7ce1597a07e069ba (patch)
treed069ef791a574242dc16aff9f363d350d4ee0b57 /net/vmw_vsock
parentfe502c4a38d97e5f8b9d5602af1f07f5abc529d2 (diff)
downloadlinux-4c7246dc45e2706770d5233f7ce1597a07e069ba.tar.bz2
vsock/virtio: add transport parameter to the virtio_transport_reset_no_sock()
We are going to add 'struct vsock_sock *' parameter to virtio_transport_get_ops(). In some cases, like in the virtio_transport_reset_no_sock(), we don't have any socket assigned to the packet received, so we can't use the virtio_transport_get_ops(). In order to allow virtio_transport_reset_no_sock() to use the '.send_pkt' callback from the 'vhost_transport' or 'virtio_transport', we add the 'struct virtio_transport *' to it and to its caller: virtio_transport_recv_pkt(). We moved the 'vhost_transport' and 'virtio_transport' definition, to pass their address to the virtio_transport_recv_pkt(). Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/vmw_vsock')
-rw-r--r--net/vmw_vsock/virtio_transport.c160
-rw-r--r--net/vmw_vsock/virtio_transport_common.c12
2 files changed, 86 insertions, 86 deletions
diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
index 082a30936690..3756f0857946 100644
--- a/net/vmw_vsock/virtio_transport.c
+++ b/net/vmw_vsock/virtio_transport.c
@@ -86,33 +86,6 @@ out_rcu:
return ret;
}
-static void virtio_transport_loopback_work(struct work_struct *work)
-{
- struct virtio_vsock *vsock =
- container_of(work, struct virtio_vsock, loopback_work);
- LIST_HEAD(pkts);
-
- spin_lock_bh(&vsock->loopback_list_lock);
- list_splice_init(&vsock->loopback_list, &pkts);
- spin_unlock_bh(&vsock->loopback_list_lock);
-
- mutex_lock(&vsock->rx_lock);
-
- if (!vsock->rx_run)
- goto out;
-
- while (!list_empty(&pkts)) {
- struct virtio_vsock_pkt *pkt;
-
- pkt = list_first_entry(&pkts, struct virtio_vsock_pkt, list);
- list_del_init(&pkt->list);
-
- virtio_transport_recv_pkt(pkt);
- }
-out:
- mutex_unlock(&vsock->rx_lock);
-}
-
static int virtio_transport_send_pkt_loopback(struct virtio_vsock *vsock,
struct virtio_vsock_pkt *pkt)
{
@@ -370,59 +343,6 @@ static bool virtio_transport_more_replies(struct virtio_vsock *vsock)
return val < virtqueue_get_vring_size(vq);
}
-static void virtio_transport_rx_work(struct work_struct *work)
-{
- struct virtio_vsock *vsock =
- container_of(work, struct virtio_vsock, rx_work);
- struct virtqueue *vq;
-
- vq = vsock->vqs[VSOCK_VQ_RX];
-
- mutex_lock(&vsock->rx_lock);
-
- if (!vsock->rx_run)
- goto out;
-
- do {
- virtqueue_disable_cb(vq);
- for (;;) {
- struct virtio_vsock_pkt *pkt;
- unsigned int len;
-
- if (!virtio_transport_more_replies(vsock)) {
- /* Stop rx until the device processes already
- * pending replies. Leave rx virtqueue
- * callbacks disabled.
- */
- goto out;
- }
-
- pkt = virtqueue_get_buf(vq, &len);
- if (!pkt) {
- break;
- }
-
- vsock->rx_buf_nr--;
-
- /* Drop short/long packets */
- if (unlikely(len < sizeof(pkt->hdr) ||
- len > sizeof(pkt->hdr) + pkt->len)) {
- virtio_transport_free_pkt(pkt);
- continue;
- }
-
- pkt->len = len - sizeof(pkt->hdr);
- virtio_transport_deliver_tap_pkt(pkt);
- virtio_transport_recv_pkt(pkt);
- }
- } while (!virtqueue_enable_cb(vq));
-
-out:
- if (vsock->rx_buf_nr < vsock->rx_buf_max_nr / 2)
- virtio_vsock_rx_fill(vsock);
- mutex_unlock(&vsock->rx_lock);
-}
-
/* event_lock must be held */
static int virtio_vsock_event_fill_one(struct virtio_vsock *vsock,
struct virtio_vsock_event *event)
@@ -586,6 +506,86 @@ static struct virtio_transport virtio_transport = {
.send_pkt = virtio_transport_send_pkt,
};
+static void virtio_transport_loopback_work(struct work_struct *work)
+{
+ struct virtio_vsock *vsock =
+ container_of(work, struct virtio_vsock, loopback_work);
+ LIST_HEAD(pkts);
+
+ spin_lock_bh(&vsock->loopback_list_lock);
+ list_splice_init(&vsock->loopback_list, &pkts);
+ spin_unlock_bh(&vsock->loopback_list_lock);
+
+ mutex_lock(&vsock->rx_lock);
+
+ if (!vsock->rx_run)
+ goto out;
+
+ while (!list_empty(&pkts)) {
+ struct virtio_vsock_pkt *pkt;
+
+ pkt = list_first_entry(&pkts, struct virtio_vsock_pkt, list);
+ list_del_init(&pkt->list);
+
+ virtio_transport_recv_pkt(&virtio_transport, pkt);
+ }
+out:
+ mutex_unlock(&vsock->rx_lock);
+}
+
+static void virtio_transport_rx_work(struct work_struct *work)
+{
+ struct virtio_vsock *vsock =
+ container_of(work, struct virtio_vsock, rx_work);
+ struct virtqueue *vq;
+
+ vq = vsock->vqs[VSOCK_VQ_RX];
+
+ mutex_lock(&vsock->rx_lock);
+
+ if (!vsock->rx_run)
+ goto out;
+
+ do {
+ virtqueue_disable_cb(vq);
+ for (;;) {
+ struct virtio_vsock_pkt *pkt;
+ unsigned int len;
+
+ if (!virtio_transport_more_replies(vsock)) {
+ /* Stop rx until the device processes already
+ * pending replies. Leave rx virtqueue
+ * callbacks disabled.
+ */
+ goto out;
+ }
+
+ pkt = virtqueue_get_buf(vq, &len);
+ if (!pkt) {
+ break;
+ }
+
+ vsock->rx_buf_nr--;
+
+ /* Drop short/long packets */
+ if (unlikely(len < sizeof(pkt->hdr) ||
+ len > sizeof(pkt->hdr) + pkt->len)) {
+ virtio_transport_free_pkt(pkt);
+ continue;
+ }
+
+ pkt->len = len - sizeof(pkt->hdr);
+ virtio_transport_deliver_tap_pkt(pkt);
+ virtio_transport_recv_pkt(&virtio_transport, pkt);
+ }
+ } while (!virtqueue_enable_cb(vq));
+
+out:
+ if (vsock->rx_buf_nr < vsock->rx_buf_max_nr / 2)
+ virtio_vsock_rx_fill(vsock);
+ mutex_unlock(&vsock->rx_lock);
+}
+
static int virtio_vsock_probe(struct virtio_device *vdev)
{
vq_callback_t *callbacks[] = {
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index 3edc373d2acc..e7b5e99842c9 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -745,9 +745,9 @@ static int virtio_transport_reset(struct vsock_sock *vsk,
/* Normally packets are associated with a socket. There may be no socket if an
* attempt was made to connect to a socket that does not exist.
*/
-static int virtio_transport_reset_no_sock(struct virtio_vsock_pkt *pkt)
+static int virtio_transport_reset_no_sock(const struct virtio_transport *t,
+ struct virtio_vsock_pkt *pkt)
{
- const struct virtio_transport *t;
struct virtio_vsock_pkt *reply;
struct virtio_vsock_pkt_info info = {
.op = VIRTIO_VSOCK_OP_RST,
@@ -767,7 +767,6 @@ static int virtio_transport_reset_no_sock(struct virtio_vsock_pkt *pkt)
if (!reply)
return -ENOMEM;
- t = virtio_transport_get_ops();
if (!t) {
virtio_transport_free_pkt(reply);
return -ENOTCONN;
@@ -1109,7 +1108,8 @@ static bool virtio_transport_space_update(struct sock *sk,
/* We are under the virtio-vsock's vsock->rx_lock or vhost-vsock's vq->mutex
* lock.
*/
-void virtio_transport_recv_pkt(struct virtio_vsock_pkt *pkt)
+void virtio_transport_recv_pkt(struct virtio_transport *t,
+ struct virtio_vsock_pkt *pkt)
{
struct sockaddr_vm src, dst;
struct vsock_sock *vsk;
@@ -1131,7 +1131,7 @@ void virtio_transport_recv_pkt(struct virtio_vsock_pkt *pkt)
le32_to_cpu(pkt->hdr.fwd_cnt));
if (le16_to_cpu(pkt->hdr.type) != VIRTIO_VSOCK_TYPE_STREAM) {
- (void)virtio_transport_reset_no_sock(pkt);
+ (void)virtio_transport_reset_no_sock(t, pkt);
goto free_pkt;
}
@@ -1142,7 +1142,7 @@ void virtio_transport_recv_pkt(struct virtio_vsock_pkt *pkt)
if (!sk) {
sk = vsock_find_bound_socket(&dst);
if (!sk) {
- (void)virtio_transport_reset_no_sock(pkt);
+ (void)virtio_transport_reset_no_sock(t, pkt);
goto free_pkt;
}
}