Even if it is currently forbidden to XDP_REDIRECT a multi-frag xdp_frame into a devmap, compute proper xdp_frame length in __xdp_enqueue and is_valid_dst routines running xdp_get_frame_len(). Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx> --- kernel/bpf/devmap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c index 1400561efb15..a0e02b009487 100644 --- a/kernel/bpf/devmap.c +++ b/kernel/bpf/devmap.c @@ -477,7 +477,7 @@ static inline int __xdp_enqueue(struct net_device *dev, struct xdp_frame *xdpf, if (!dev->netdev_ops->ndo_xdp_xmit) return -EOPNOTSUPP; - err = xdp_ok_fwd_dev(dev, xdpf->len); + err = xdp_ok_fwd_dev(dev, xdp_get_frame_len(xdpf)); if (unlikely(err)) return err; @@ -536,7 +536,7 @@ static bool is_valid_dst(struct bpf_dtab_netdev *obj, struct xdp_frame *xdpf) !obj->dev->netdev_ops->ndo_xdp_xmit) return false; - if (xdp_ok_fwd_dev(obj->dev, xdpf->len)) + if (xdp_ok_fwd_dev(obj->dev, xdp_get_frame_len(xdpf))) return false; return true; -- 2.36.1
