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Message-Id: <e2caea4cad530f2780e1debf6512842cbb28c962.1674913191.git.lorenzo@kernel.org>
Date: Sat, 28 Jan 2023 15:06:14 +0100
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: bpf@...r.kernel.org
Cc: netdev@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
andrii@...nel.org, davem@...emloft.net, kuba@...nel.org,
pabeni@...hat.com, edumazet@...gle.com, hawk@...nel.org,
toke@...hat.com, memxor@...il.com, alardam@...il.com,
saeedm@...dia.com, anthony.l.nguyen@...el.com, gospo@...adcom.com,
vladimir.oltean@....com, nbd@....name, john@...ozen.org,
leon@...nel.org, simon.horman@...igine.com, aelior@...vell.com,
christophe.jaillet@...adoo.fr, ecree.xilinx@...il.com,
mst@...hat.com, bjorn@...nel.org, magnus.karlsson@...el.com,
maciej.fijalkowski@...el.com, intel-wired-lan@...ts.osuosl.org,
lorenzo.bianconi@...hat.com, martin.lau@...ux.dev, sdf@...gle.com
Subject: [PATCH v4 bpf-next 3/8] xsk: add usage of XDP features flags
From: Marek Majtyka <alardam@...il.com>
Change necessary condition check for XSK from ndo functions to
xdp features flags.
Signed-off-by: Marek Majtyka <alardam@...il.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
net/xdp/xsk_buff_pool.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
index ed6c71826d31..b2df1e0f8153 100644
--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -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;
}
--
2.39.1
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