162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci#include <linux/netlink.h> 362306a36Sopenharmony_ci#include <linux/rtnetlink.h> 462306a36Sopenharmony_ci#include <linux/types.h> 562306a36Sopenharmony_ci#include <net/net_namespace.h> 662306a36Sopenharmony_ci#include <net/netlink.h> 762306a36Sopenharmony_ci#include <linux/in6.h> 862306a36Sopenharmony_ci#include <net/ip.h> 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ciint rtm_getroute_parse_ip_proto(struct nlattr *attr, u8 *ip_proto, u8 family, 1162306a36Sopenharmony_ci struct netlink_ext_ack *extack) 1262306a36Sopenharmony_ci{ 1362306a36Sopenharmony_ci *ip_proto = nla_get_u8(attr); 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci switch (*ip_proto) { 1662306a36Sopenharmony_ci case IPPROTO_TCP: 1762306a36Sopenharmony_ci case IPPROTO_UDP: 1862306a36Sopenharmony_ci return 0; 1962306a36Sopenharmony_ci case IPPROTO_ICMP: 2062306a36Sopenharmony_ci if (family != AF_INET) 2162306a36Sopenharmony_ci break; 2262306a36Sopenharmony_ci return 0; 2362306a36Sopenharmony_ci#if IS_ENABLED(CONFIG_IPV6) 2462306a36Sopenharmony_ci case IPPROTO_ICMPV6: 2562306a36Sopenharmony_ci if (family != AF_INET6) 2662306a36Sopenharmony_ci break; 2762306a36Sopenharmony_ci return 0; 2862306a36Sopenharmony_ci#endif 2962306a36Sopenharmony_ci } 3062306a36Sopenharmony_ci NL_SET_ERR_MSG(extack, "Unsupported ip proto"); 3162306a36Sopenharmony_ci return -EOPNOTSUPP; 3262306a36Sopenharmony_ci} 3362306a36Sopenharmony_ciEXPORT_SYMBOL_GPL(rtm_getroute_parse_ip_proto); 34