linux-kernel - [PATCH net-next] vhost/net: use xdp_get_frame

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Message-ID: <20250507161936.3271345-1-jon@nutanix.com>
Date: Wed,  7 May 2025 09:19:35 -0700
From: Jon Kohler <jon@...anix.com>
To: "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>,
        Eugenio Pérez <eperezma@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>, kvm@...r.kernel.org,
        virtualization@...ts.linux.dev, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Cc: Jon Kohler <jon@...anix.com>
Subject: [PATCH net-next] vhost/net: use xdp_get_frame_len()

Use xdp_get_frame_len helper to ensure xdp frame size is calculated
correctly in both single buffer and multi buffer configurations.

Signed-off-by: Jon Kohler <jon@...anix.com>
---
 drivers/vhost/net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 7cbfc7d718b3..ff2fcb019900 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -199,7 +199,7 @@ static int vhost_net_buf_peek_len(void *ptr)
 	if (tun_is_xdp_frame(ptr)) {
 		struct xdp_frame *xdpf = tun_ptr_to_xdp(ptr);
 
-		return xdpf->len;
+		return xdp_get_frame_len(xdpf);
 	}
 
 	return __skb_array_len_with_tag(ptr);
-- 
2.43.0