1 | // SPDX-License-Identifier: GPL-2.0-only |
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2 | #include <linux/netlink.h> |
3 | #include <linux/rtnetlink.h> |
4 | #include <linux/types.h> |
5 | #include <net/net_namespace.h> |
6 | #include <net/netlink.h> |
7 | #include <linux/in6.h> |
8 | #include <net/ip.h> |
9 | |
10 | int rtm_getroute_parse_ip_proto(struct nlattr *attr, u8 *ip_proto, u8 family, |
11 | struct netlink_ext_ack *extack) |
12 | { |
13 | *ip_proto = nla_get_u8(nla: attr); |
14 | |
15 | switch (*ip_proto) { |
16 | case IPPROTO_TCP: |
17 | case IPPROTO_UDP: |
18 | return 0; |
19 | case IPPROTO_ICMP: |
20 | if (family != AF_INET) |
21 | break; |
22 | return 0; |
23 | #if IS_ENABLED(CONFIG_IPV6) |
24 | case IPPROTO_ICMPV6: |
25 | if (family != AF_INET6) |
26 | break; |
27 | return 0; |
28 | #endif |
29 | } |
30 | NL_SET_ERR_MSG(extack, "Unsupported ip proto"); |
31 | return -EOPNOTSUPP; |
32 | } |
33 | EXPORT_SYMBOL_GPL(rtm_getroute_parse_ip_proto); |
34 |