xsk: Fix xsk_poll()'s return type

xsk_poll() is defined as returning 'unsigned int' but the
.poll method is declared as returning '__poll_t', a bitwise type.

Fix this by using the proper return type and using the EPOLL
constants instead of the POLL ones, as required for __poll_t.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Link: https://lore.kernel.org/bpf/20191120001042.30830-1-luc.vanoostenryck@gmail.com

diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index 6040bc2..9567938 100644 (file)
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -447,10 +447,10 @@ static int xsk_sendmsg(struct socket *sock, struct msghdr *m, size_t total_len)
        return __xsk_sendmsg(sk);
 }
 
-static unsigned int xsk_poll(struct file *file, struct socket *sock,
+static __poll_t xsk_poll(struct file *file, struct socket *sock,
                             struct poll_table_struct *wait)
 {
-       unsigned int mask = datagram_poll(file, sock, wait);
+       __poll_t mask = datagram_poll(file, sock, wait);
        struct sock *sk = sock->sk;
        struct xdp_sock *xs = xdp_sk(sk);
        struct net_device *dev;
@@ -472,9 +472,9 @@ static unsigned int xsk_poll(struct file *file, struct socket *sock,
        }
 
        if (xs->rx && !xskq_empty_desc(xs->rx))
-               mask |= POLLIN | POLLRDNORM;
+               mask |= EPOLLIN | EPOLLRDNORM;
        if (xs->tx && !xskq_full_desc(xs->tx))
-               mask |= POLLOUT | POLLWRNORM;
+               mask |= EPOLLOUT | EPOLLWRNORM;
 
        return mask;
 }