| 1 | // SPDX-License-Identifier: GPL-2.0-only |
|---|---|
| 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 |