diff options
| author |   Arseniy Krasnov <avkrasnov@salutedevices.com> | 2023-10-10 22:15:14 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2023-10-15 13:19:42 +0100 |
| commit | 49dbe25adac42d3e06f65d1420946bec65896222 (patch) | |
| tree | 978587905b267e3dd01ce3f09d87767c9bad321a /net/vmw_vsock | |
| parent | vsock: set EPOLLERR on non-empty error queue (diff) | |
| download | wireguard-linux-49dbe25adac42d3e06f65d1420946bec65896222.tar.xz wireguard-linux-49dbe25adac42d3e06f65d1420946bec65896222.zip | |
vsock: read from socket's error queue
This adds handling of MSG_ERRQUEUE input flag in receive call. This flag
is used to read socket's error queue instead of data queue. Possible
scenario of error queue usage is receiving completions for transmission
with MSG_ZEROCOPY flag. This patch also adds new defines: 'SOL_VSOCK'
and 'VSOCK_RECVERR'.
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-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/af_vsock.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index d841f4de33b0..38486efd3d05 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -89,6 +89,7 @@ #include <linux/types.h> #include <linux/bitops.h> #include <linux/cred.h> +#include <linux/errqueue.h> #include <linux/init.h> #include <linux/io.h> #include <linux/kernel.h> @@ -110,6 +111,7 @@ #include <linux/workqueue.h> #include <net/sock.h> #include <net/af_vsock.h> +#include <uapi/linux/vm_sockets.h> static int __vsock_bind(struct sock *sk, struct sockaddr_vm *addr); static void vsock_sk_destruct(struct sock *sk); @@ -2137,6 +2139,10 @@ vsock_connectible_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int err; sk = sock->sk; + + if (unlikely(flags & MSG_ERRQUEUE)) + return sock_recv_errqueue(sk, msg, len, SOL_VSOCK, VSOCK_RECVERR); + vsk = vsock_sk(sk); err = 0; |