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| author | Jesper Dangaard Brouer <brouer@redhat.com> | 2020-05-14 13:50:34 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-15 07:21:55 +0300 |
| commit | fb3e6e9307973d2f70a173f1b33d1054fa2b691f (patch) | |
| tree | 32bcb2a25ff637e86999d7b7931f6aeb2557f801 | |
| parent | fa6540b8efd8944f8627c2f304114663ef4aadc4 (diff) | |
| download | linux-fb3e6e9307973d2f70a173f1b33d1054fa2b691f.tar.xz | |
tun: Add XDP frame size
The tun driver have two code paths for running XDP (bpf_prog_run_xdp).
In both cases 'buflen' contains enough tailroom for skb_shared_info.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/bpf/158945343419.97035.9594485183958037621.stgit@firesoul
| -rw-r--r-- | drivers/net/tun.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 44889eba1dbc..c54f967e2c66 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1671,6 +1671,7 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, xdp_set_data_meta_invalid(&xdp); xdp.data_end = xdp.data + len; xdp.rxq = &tfile->xdp_rxq; + xdp.frame_sz = buflen; act = bpf_prog_run_xdp(xdp_prog, &xdp); if (act == XDP_REDIRECT || act == XDP_TX) { @@ -2411,6 +2412,7 @@ static int tun_xdp_one(struct tun_struct *tun, } xdp_set_data_meta_invalid(xdp); xdp->rxq = &tfile->xdp_rxq; + xdp->frame_sz = buflen; act = bpf_prog_run_xdp(xdp_prog, xdp); err = tun_xdp_act(tun, xdp_prog, xdp, act); |