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 9 int 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 } 32 EXPORT_SYMBOL_GPL(rtm_getroute_parse_ip_proto); 33