diff options
Diffstat (limited to 'net/ipv4/xfrm4_tunnel.c')
| -rw-r--r-- | net/ipv4/xfrm4_tunnel.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c index 9d4f418f1bf8..8489fa106583 100644 --- a/net/ipv4/xfrm4_tunnel.c +++ b/net/ipv4/xfrm4_tunnel.c @@ -22,13 +22,17 @@ static int ipip_xfrm_rcv(struct xfrm_state *x, struct sk_buff *skb) return ip_hdr(skb)->protocol; } -static int ipip_init_state(struct xfrm_state *x) +static int ipip_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack) { - if (x->props.mode != XFRM_MODE_TUNNEL) + if (x->props.mode != XFRM_MODE_TUNNEL) { + NL_SET_ERR_MSG(extack, "IPv4 tunnel can only be used with tunnel mode"); return -EINVAL; + } - if (x->encap) + if (x->encap) { + NL_SET_ERR_MSG(extack, "IPv4 tunnel is not compatible with encapsulation"); return -EINVAL; + } x->props.header_len = sizeof(struct iphdr); |