diff options
| -rw-r--r-- | drivers/net/veth.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c index bfae15ec902b..1b5714926d81 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -1528,9 +1528,14 @@ static int veth_xdp_set(struct net_device *dev, struct bpf_prog *prog, goto err; } - max_mtu = PAGE_SIZE - VETH_XDP_HEADROOM - - peer->hard_header_len - - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); + max_mtu = SKB_WITH_OVERHEAD(PAGE_SIZE - VETH_XDP_HEADROOM) - + peer->hard_header_len; + /* Allow increasing the max_mtu if the program supports + * XDP fragments. + */ + if (prog->aux->xdp_has_frags) + max_mtu += PAGE_SIZE * MAX_SKB_FRAGS; + if (peer->mtu > max_mtu) { NL_SET_ERR_MSG_MOD(extack, "Peer MTU is too large to set XDP"); err = -ERANGE; |