netdev - [PATCH v2 bpf 3/5] xsk: add usage of xdp properties flags

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Date:   Fri,  4 Dec 2020 11:28:59 +0100
From:   alardam@...il.com
To:     magnus.karlsson@...el.com, bjorn.topel@...el.com,
        andrii.nakryiko@...il.com, kuba@...nel.org, ast@...nel.org,
        daniel@...earbox.net, netdev@...r.kernel.org, davem@...emloft.net,
        john.fastabend@...il.com, hawk@...nel.org, toke@...hat.com
Cc:     maciej.fijalkowski@...el.com, jonathan.lemon@...il.com,
        bpf@...r.kernel.org, jeffrey.t.kirsher@...el.com,
        maciejromanfijalkowski@...il.com, intel-wired-lan@...ts.osuosl.org,
        Marek Majtyka <marekx.majtyka@...el.com>
Subject: [PATCH v2 bpf 3/5] xsk: add usage of xdp properties flags

From: Marek Majtyka <marekx.majtyka@...el.com>

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

Signed-off-by: Marek Majtyka <marekx.majtyka@...el.com>
---
 net/xdp/xsk_buff_pool.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
index 96bb607853ad..7ff82e2b2b43 100644
--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -158,8 +158,7 @@ static 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_properties & XDP_F_FULL_ZC) != XDP_F_FULL_ZC) {
 		err = -EOPNOTSUPP;
 		goto err_unreg_pool;
 	}
-- 
2.27.0