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xsk: add usage of XDP features flags 

Change necessary condition check for XSK from ndo functions to
xdp features flags.

Signed-off-by: Marek Majtyka <alardam@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/45a98ec67b4556a6a22dfd85df3eb8276beeeb74.1675245258.git.lorenzo@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Marek Majtyka 2023-02-01 11:24:19 +01:00 committed by Alexei Starovoitov
parent 66c0e13ad2
commit 0ae0cb2bb2
1 changed files with 5 additions and 2 deletions
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7
net/xdp/xsk_buff_pool.c
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@ -140,6 +140,10 @@ static void xp_disable_drv_zc(struct xsk_buff_pool *pool)
}
}
#define NETDEV_XDP_ACT_ZC (NETDEV_XDP_ACT_BASIC | \
NETDEV_XDP_ACT_REDIRECT | \
NETDEV_XDP_ACT_XSK_ZEROCOPY)
int xp_assign_dev(struct xsk_buff_pool *pool,
struct net_device *netdev, u16 queue_id, u16 flags)
{
@ -178,8 +182,7 @@ int xp_assign_dev(struct xsk_buff_pool *pool,
/* For copy-mode, we are done. */
return 0;
if (!netdev->netdev_ops->ndo_bpf ||
!netdev->netdev_ops->ndo_xsk_wakeup) {
if ((netdev->xdp_features & NETDEV_XDP_ACT_ZC) != NETDEV_XDP_ACT_ZC) {
err = -EOPNOTSUPP;
goto err_unreg_pool;
}