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