Adds a new argument, named "src_cid", to let them know which `virtio_vsock`
to be selected.
Signed-off-by: Xuewei Niu <niuxuewei.nxw@xxxxxxxxxxxx>
---
include/net/af_vsock.h | 2 +-
net/vmw_vsock/af_vsock.c | 15 +++++++++++++--
net/vmw_vsock/virtio_transport.c | 4 ++--
net/vmw_vsock/vsock_loopback.c | 4 ++--
4 files changed, 18 insertions(+), 7 deletions(-)
diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h
index 0151296a0bc5..25f7dc3d602d 100644
--- a/include/net/af_vsock.h
+++ b/include/net/af_vsock.h
@@ -143,7 +143,7 @@ struct vsock_transport {
int flags);
int (*seqpacket_enqueue)(struct vsock_sock *vsk, struct msghdr *msg,
size_t len);
- bool (*seqpacket_allow)(u32 remote_cid);
+ bool (*seqpacket_allow)(u32 src_cid, u32 remote_cid);
u32 (*seqpacket_has_data)(struct vsock_sock *vsk);
/* Notification. */
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index da06ddc940cd..3b34be802bf2 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -470,10 +470,12 @@ int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk)
{
const struct vsock_transport *new_transport;
struct sock *sk = sk_vsock(vsk);
- unsigned int remote_cid = vsk->remote_addr.svm_cid;
+ unsigned int src_cid, remote_cid;
__u8 remote_flags;
int ret;
+ remote_cid = vsk->remote_addr.svm_cid;
+
/* If the packet is coming with the source and destination CIDs higher
* than VMADDR_CID_HOST, then a vsock channel where all the packets are
* forwarded to the host should be established. Then the host will
@@ -527,8 +529,17 @@ int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk)
return -ENODEV;
if (sk->sk_type == SOCK_SEQPACKET) {
+ if (vsk->local_addr.svm_cid == VMADDR_CID_ANY) {
+ if (new_transport->get_default_cid)
+ src_cid = new_transport->get_default_cid();
+ else
+ src_cid = new_transport->get_local_cid();
+ } else {
+ src_cid = vsk->local_addr.svm_cid;
+ }
+
if (!new_transport->seqpacket_allow ||
- !new_transport->seqpacket_allow(remote_cid)) {
+ !new_transport->seqpacket_allow(src_cid, remote_cid)) {
module_put(new_transport->module);
return -ESOCKTNOSUPPORT;
}
diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
index 998b22e5ce36..0bddcbd906a2 100644
--- a/net/vmw_vsock/virtio_transport.c
+++ b/net/vmw_vsock/virtio_transport.c
@@ -615,14 +615,14 @@ static struct virtio_transport virtio_transport = {
.can_msgzerocopy = virtio_transport_can_msgzerocopy,
};
-static bool virtio_transport_seqpacket_allow(u32 remote_cid)
+static bool virtio_transport_seqpacket_allow(u32 src_cid, u32 remote_cid)
{
struct virtio_vsock *vsock;
bool seqpacket_allow;
seqpacket_allow = false;
rcu_read_lock();
- vsock = rcu_dereference(the_virtio_vsock);
+ vsock = virtio_transport_get_virtio_vsock(src_cid);
if (vsock)
seqpacket_allow = vsock->seqpacket_allow;
rcu_read_unlock();
diff --git a/net/vmw_vsock/vsock_loopback.c b/net/vmw_vsock/vsock_loopback.c
index 6dea6119f5b2..b94358f5bb2c 100644
--- a/net/vmw_vsock/vsock_loopback.c
+++ b/net/vmw_vsock/vsock_loopback.c
@@ -46,7 +46,7 @@ static int vsock_loopback_cancel_pkt(struct vsock_sock *vsk)
return 0;
}
-static bool vsock_loopback_seqpacket_allow(u32 remote_cid);
+static bool vsock_loopback_seqpacket_allow(u32 src_cid, u32 remote_cid);
static bool vsock_loopback_msgzerocopy_allow(void)
{
return true;
@@ -104,7 +104,7 @@ static struct virtio_transport loopback_transport = {
.send_pkt = vsock_loopback_send_pkt,
};
-static bool vsock_loopback_seqpacket_allow(u32 remote_cid)
+static bool vsock_loopback_seqpacket_allow(u32 src_cid, u32 remote_cid)
{
return true;
}
--
2.34.1
