diff options
| -rw-r--r-- | include/net/ipcomp.h | 2 | ||||
| -rw-r--r-- | net/ipv4/ipcomp.c | 7 | ||||
| -rw-r--r-- | net/ipv6/ipcomp6.c | 7 | ||||
| -rw-r--r-- | net/xfrm/xfrm_ipcomp.c | 10 |
4 files changed, 18 insertions, 8 deletions
diff --git a/include/net/ipcomp.h b/include/net/ipcomp.h index c31108295079..8660a2a6d1fc 100644 --- a/include/net/ipcomp.h +++ b/include/net/ipcomp.h @@ -22,7 +22,7 @@ struct xfrm_state; int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb); int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb); void ipcomp_destroy(struct xfrm_state *x); -int ipcomp_init_state(struct xfrm_state *x); +int ipcomp_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack); static inline struct ip_comp_hdr *ip_comp_hdr(const struct sk_buff *skb) { diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c index 230d1120874f..5a4fb2539b08 100644 --- a/net/ipv4/ipcomp.c +++ b/net/ipv4/ipcomp.c @@ -130,17 +130,20 @@ static int ipcomp4_init_state(struct xfrm_state *x, x->props.header_len += sizeof(struct iphdr); break; default: + NL_SET_ERR_MSG(extack, "Unsupported XFRM mode for IPcomp"); goto out; } - err = ipcomp_init_state(x); + err = ipcomp_init_state(x, extack); if (err) goto out; if (x->props.mode == XFRM_MODE_TUNNEL) { err = ipcomp_tunnel_attach(x); - if (err) + if (err) { + NL_SET_ERR_MSG(extack, "Kernel error: failed to initialize the associated state"); goto out; + } } err = 0; diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c index 7e47009739e9..72d4858dec18 100644 --- a/net/ipv6/ipcomp6.c +++ b/net/ipv6/ipcomp6.c @@ -149,17 +149,20 @@ static int ipcomp6_init_state(struct xfrm_state *x, x->props.header_len += sizeof(struct ipv6hdr); break; default: + NL_SET_ERR_MSG(extack, "Unsupported XFRM mode for IPcomp"); goto out; } - err = ipcomp_init_state(x); + err = ipcomp_init_state(x, extack); if (err) goto out; if (x->props.mode == XFRM_MODE_TUNNEL) { err = ipcomp6_tunnel_attach(x); - if (err) + if (err) { + NL_SET_ERR_MSG(extack, "Kernel error: failed to initialize the associated state"); goto out; + } } err = 0; diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c index cb40ff0ff28d..656045a87606 100644 --- a/net/xfrm/xfrm_ipcomp.c +++ b/net/xfrm/xfrm_ipcomp.c @@ -325,18 +325,22 @@ void ipcomp_destroy(struct xfrm_state *x) } EXPORT_SYMBOL_GPL(ipcomp_destroy); -int ipcomp_init_state(struct xfrm_state *x) +int ipcomp_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack) { int err; struct ipcomp_data *ipcd; struct xfrm_algo_desc *calg_desc; err = -EINVAL; - if (!x->calg) + if (!x->calg) { + NL_SET_ERR_MSG(extack, "Missing required compression algorithm"); goto out; + } - if (x->encap) + if (x->encap) { + NL_SET_ERR_MSG(extack, "IPComp is not compatible with encapsulation"); goto out; + } err = -ENOMEM; ipcd = kzalloc(sizeof(*ipcd), GFP_KERNEL); |