// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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#include <linux/types.h>
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#include <net/net_namespace.h>
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#include <net/netlink.h>
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#include <linux/in6.h>
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#include <net/ip.h>
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int rtm_getroute_parse_ip_proto(struct nlattr *attr, u8 *ip_proto, u8 family,
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struct netlink_ext_ack *extack)
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{
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*ip_proto = nla_get_u8(attr);
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switch (*ip_proto) {
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case IPPROTO_TCP:
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case IPPROTO_UDP:
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return 0;
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case IPPROTO_ICMP:
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if (family != AF_INET)
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break;
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return 0;
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#if IS_ENABLED(CONFIG_IPV6)
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case IPPROTO_ICMPV6:
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if (family != AF_INET6)
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break;
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return 0;
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#endif
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}
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NL_SET_ERR_MSG(extack, "Unsupported ip proto");
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return -EOPNOTSUPP;
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}
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EXPORT_SYMBOL_GPL(rtm_getroute_parse_ip_proto);
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