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Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

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Alexei Starovoitov says:

====================
pull-request: bpf 2019-10-12

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) a bunch of small fixes. Nothing critical.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2019-10-12 11:21:56 -07:00
parent f0308fb070 106c35dda3
commit 8caf8a91f3
11 changed files with 95 additions and 34 deletions
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42
net/xdp/xsk.c
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@@ -305,9 +305,8 @@ out:
}
EXPORT_SYMBOL(xsk_umem_consume_tx);
static int xsk_zc_xmit(struct sock *sk)
static int xsk_zc_xmit(struct xdp_sock *xs)
{
struct xdp_sock *xs = xdp_sk(sk);
struct net_device *dev = xs->dev;
return dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id,
@@ -327,11 +326,10 @@ static void xsk_destruct_skb(struct sk_buff *skb)
sock_wfree(skb);
}
static int xsk_generic_xmit(struct sock *sk, struct msghdr *m,
size_t total_len)
static int xsk_generic_xmit(struct sock *sk)
{
u32 max_batch = TX_BATCH_SIZE;
struct xdp_sock *xs = xdp_sk(sk);
u32 max_batch = TX_BATCH_SIZE;
bool sent_frame = false;
struct xdp_desc desc;
struct sk_buff *skb;
@@ -394,6 +392,18 @@ out:
return err;
}
static int __xsk_sendmsg(struct sock *sk)
{
struct xdp_sock *xs = xdp_sk(sk);
if (unlikely(!(xs->dev->flags & IFF_UP)))
return -ENETDOWN;
if (unlikely(!xs->tx))
return -ENOBUFS;
return xs->zc ? xsk_zc_xmit(xs) : xsk_generic_xmit(sk);
}
static int xsk_sendmsg(struct socket *sock, struct msghdr *m, size_t total_len)
{
bool need_wait = !(m->msg_flags & MSG_DONTWAIT);
@@ -402,21 +412,18 @@ static int xsk_sendmsg(struct socket *sock, struct msghdr *m, size_t total_len)
if (unlikely(!xsk_is_bound(xs)))
return -ENXIO;
if (unlikely(!(xs->dev->flags & IFF_UP)))
return -ENETDOWN;
if (unlikely(!xs->tx))
return -ENOBUFS;
if (need_wait)
if (unlikely(need_wait))
return -EOPNOTSUPP;
return (xs->zc) ? xsk_zc_xmit(sk) : xsk_generic_xmit(sk, m, total_len);
return __xsk_sendmsg(sk);
}
static unsigned int xsk_poll(struct file *file, struct socket *sock,
struct poll_table_struct *wait)
{
unsigned int mask = datagram_poll(file, sock, wait);
struct xdp_sock *xs = xdp_sk(sock->sk);
struct sock *sk = sock->sk;
struct xdp_sock *xs = xdp_sk(sk);
struct net_device *dev;
struct xdp_umem *umem;
@@ -426,9 +433,14 @@ static unsigned int xsk_poll(struct file *file, struct socket *sock,
dev = xs->dev;
umem = xs->umem;
if (umem->need_wakeup)
dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id,
umem->need_wakeup);
if (umem->need_wakeup) {
if (dev->netdev_ops->ndo_xsk_wakeup)
dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id,
umem->need_wakeup);
else
/* Poll needs to drive Tx also in copy mode */
__xsk_sendmsg(sk);
}
if (xs->rx && !xskq_empty_desc(xs->rx))
mask |= POLLIN | POLLRDNORM;