[RFC net-next 17/22] net: tun: initialize mb bit in xdp_buff to 0
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2020-07-23 11:43:53
Also in:
bpf
Subsystem:
networking drivers, the rest, tun/tap driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Willem de Bruijn, Jason Wang
Initialize multi-buffer bit (mb) to 0 in xdp_buff data structure. This is a preliminary patch to enable xdp multi-buffer support. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> --- drivers/net/tun.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 7adeb91bd368..7007fc344460 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c@@ -1674,6 +1674,7 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, xdp.data_end = xdp.data + len; xdp.rxq = &tfile->xdp_rxq; xdp.frame_sz = buflen; + xdp.mb = 0; act = bpf_prog_run_xdp(xdp_prog, &xdp); if (act == XDP_REDIRECT || act == XDP_TX) {
@@ -2421,6 +2422,7 @@ static int tun_xdp_one(struct tun_struct *tun, xdp_set_data_meta_invalid(xdp); xdp->rxq = &tfile->xdp_rxq; xdp->frame_sz = buflen; + xdp->mb = 0; act = bpf_prog_run_xdp(xdp_prog, xdp); err = tun_xdp_act(tun, xdp_prog, xdp, act);
--
2.26.2