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xsk: replace ndo_xsk_async_xmit with ndo_xsk_wakeup

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This commit replaces ndo_xsk_async_xmit with ndo_xsk_wakeup. This new
ndo provides the same functionality as before but with the addition of
a new flags field that is used to specifiy if Rx, Tx or both should be
woken up. The previous ndo only woke up Tx, as implied by the
name. The i40e and ixgbe drivers (which are all the supported ones)
are updated with this new interface.

This new ndo will be used by the new need_wakeup functionality of XDP
sockets that need to be able to wake up both Rx and Tx driver
processing.

Signed-off-by: Magnus Karlsson <[email protected]>
Acked-by: Jonathan Lemon <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
This commit is contained in:
Magnus Karlsson 2019-08-14 09:27:16 +02:00 • committed by Daniel Borkmann
commit 9116e5e2b1
12 changed files with 32 additions and 19 deletions
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3
net/xdp/xdp_umem.c
View file

@ -112,8 +112,7 @@ int xdp_umem_assign_dev(struct xdp_umem *umem, struct net_device *dev,
/* For copy-mode, we are done. */
return 0;
if (!dev->netdev_ops->ndo_bpf ||
!dev->netdev_ops->ndo_xsk_async_xmit) {
if (!dev->netdev_ops->ndo_bpf || !dev->netdev_ops->ndo_xsk_wakeup) {
err = -EOPNOTSUPP;
goto err_unreg_umem;
}

3
net/xdp/xsk.c
View file

@ -212,7 +212,8 @@ static int xsk_zc_xmit(struct sock *sk)
struct xdp_sock *xs = xdp_sk(sk);
struct net_device *dev = xs->dev;
return dev->netdev_ops->ndo_xsk_async_xmit(dev, xs->queue_id);
return dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id,
XDP_WAKEUP_TX);
}
static void xsk_destruct_skb(struct sk_buff *skb)