forked from Minki/linux
2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
632 lines
16 KiB
C
632 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2016, Amir Vadai <amir@vadai.me>
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* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/skbuff.h>
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#include <linux/rtnetlink.h>
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#include <net/geneve.h>
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#include <net/netlink.h>
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#include <net/pkt_sched.h>
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#include <net/dst.h>
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#include <net/pkt_cls.h>
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#include <linux/tc_act/tc_tunnel_key.h>
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#include <net/tc_act/tc_tunnel_key.h>
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static unsigned int tunnel_key_net_id;
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static struct tc_action_ops act_tunnel_key_ops;
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static int tunnel_key_act(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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struct tcf_tunnel_key *t = to_tunnel_key(a);
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struct tcf_tunnel_key_params *params;
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int action;
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params = rcu_dereference_bh(t->params);
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tcf_lastuse_update(&t->tcf_tm);
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bstats_cpu_update(this_cpu_ptr(t->common.cpu_bstats), skb);
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action = READ_ONCE(t->tcf_action);
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switch (params->tcft_action) {
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case TCA_TUNNEL_KEY_ACT_RELEASE:
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skb_dst_drop(skb);
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break;
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case TCA_TUNNEL_KEY_ACT_SET:
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skb_dst_drop(skb);
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skb_dst_set(skb, dst_clone(¶ms->tcft_enc_metadata->dst));
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break;
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default:
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WARN_ONCE(1, "Bad tunnel_key action %d.\n",
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params->tcft_action);
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break;
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}
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return action;
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}
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static const struct nla_policy
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enc_opts_policy[TCA_TUNNEL_KEY_ENC_OPTS_MAX + 1] = {
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[TCA_TUNNEL_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
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};
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static const struct nla_policy
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geneve_opt_policy[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1] = {
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[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
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[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
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[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
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.len = 128 },
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};
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static int
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tunnel_key_copy_geneve_opt(const struct nlattr *nla, void *dst, int dst_len,
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struct netlink_ext_ack *extack)
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{
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struct nlattr *tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1];
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int err, data_len, opt_len;
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u8 *data;
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err = nla_parse_nested_deprecated(tb,
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TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX,
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nla, geneve_opt_policy, extack);
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if (err < 0)
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return err;
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if (!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] ||
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!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] ||
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!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]) {
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NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
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return -EINVAL;
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}
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data = nla_data(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
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data_len = nla_len(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
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if (data_len < 4) {
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NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
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return -ERANGE;
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}
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if (data_len % 4) {
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NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
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return -ERANGE;
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}
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opt_len = sizeof(struct geneve_opt) + data_len;
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if (dst) {
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struct geneve_opt *opt = dst;
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WARN_ON(dst_len < opt_len);
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opt->opt_class =
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nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS]);
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opt->type = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE]);
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opt->length = data_len / 4; /* length is in units of 4 bytes */
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opt->r1 = 0;
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opt->r2 = 0;
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opt->r3 = 0;
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memcpy(opt + 1, data, data_len);
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}
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return opt_len;
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}
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static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
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int dst_len, struct netlink_ext_ack *extack)
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{
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int err, rem, opt_len, len = nla_len(nla), opts_len = 0;
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const struct nlattr *attr, *head = nla_data(nla);
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err = nla_validate_deprecated(head, len, TCA_TUNNEL_KEY_ENC_OPTS_MAX,
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enc_opts_policy, extack);
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if (err)
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return err;
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nla_for_each_attr(attr, head, len, rem) {
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switch (nla_type(attr)) {
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case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
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opt_len = tunnel_key_copy_geneve_opt(attr, dst,
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dst_len, extack);
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if (opt_len < 0)
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return opt_len;
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opts_len += opt_len;
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if (dst) {
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dst_len -= opt_len;
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dst += opt_len;
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}
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break;
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}
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}
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if (!opts_len) {
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NL_SET_ERR_MSG(extack, "Empty list of tunnel options");
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return -EINVAL;
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}
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if (rem > 0) {
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NL_SET_ERR_MSG(extack, "Trailing data after parsing tunnel key options attributes");
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return -EINVAL;
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}
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return opts_len;
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}
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static int tunnel_key_get_opts_len(struct nlattr *nla,
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struct netlink_ext_ack *extack)
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{
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return tunnel_key_copy_opts(nla, NULL, 0, extack);
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}
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static int tunnel_key_opts_set(struct nlattr *nla, struct ip_tunnel_info *info,
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int opts_len, struct netlink_ext_ack *extack)
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{
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info->options_len = opts_len;
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switch (nla_type(nla_data(nla))) {
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case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
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#if IS_ENABLED(CONFIG_INET)
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info->key.tun_flags |= TUNNEL_GENEVE_OPT;
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return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
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opts_len, extack);
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#else
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return -EAFNOSUPPORT;
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#endif
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default:
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NL_SET_ERR_MSG(extack, "Cannot set tunnel options for unknown tunnel type");
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return -EINVAL;
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}
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}
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static const struct nla_policy tunnel_key_policy[TCA_TUNNEL_KEY_MAX + 1] = {
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[TCA_TUNNEL_KEY_PARMS] = { .len = sizeof(struct tc_tunnel_key) },
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[TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
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[TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
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[TCA_TUNNEL_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
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[TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
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[TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
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[TCA_TUNNEL_KEY_ENC_DST_PORT] = {.type = NLA_U16},
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[TCA_TUNNEL_KEY_NO_CSUM] = { .type = NLA_U8 },
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[TCA_TUNNEL_KEY_ENC_OPTS] = { .type = NLA_NESTED },
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[TCA_TUNNEL_KEY_ENC_TOS] = { .type = NLA_U8 },
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[TCA_TUNNEL_KEY_ENC_TTL] = { .type = NLA_U8 },
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};
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static void tunnel_key_release_params(struct tcf_tunnel_key_params *p)
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{
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if (!p)
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return;
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if (p->tcft_action == TCA_TUNNEL_KEY_ACT_SET)
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dst_release(&p->tcft_enc_metadata->dst);
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kfree_rcu(p, rcu);
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}
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static int tunnel_key_init(struct net *net, struct nlattr *nla,
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struct nlattr *est, struct tc_action **a,
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int ovr, int bind, bool rtnl_held,
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struct tcf_proto *tp,
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struct netlink_ext_ack *extack)
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{
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struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
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struct nlattr *tb[TCA_TUNNEL_KEY_MAX + 1];
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struct tcf_tunnel_key_params *params_new;
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struct metadata_dst *metadata = NULL;
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struct tcf_chain *goto_ch = NULL;
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struct tc_tunnel_key *parm;
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struct tcf_tunnel_key *t;
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bool exists = false;
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__be16 dst_port = 0;
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__be64 key_id = 0;
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int opts_len = 0;
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__be16 flags = 0;
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u8 tos, ttl;
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int ret = 0;
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int err;
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if (!nla) {
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NL_SET_ERR_MSG(extack, "Tunnel requires attributes to be passed");
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return -EINVAL;
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}
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err = nla_parse_nested_deprecated(tb, TCA_TUNNEL_KEY_MAX, nla,
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tunnel_key_policy, extack);
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if (err < 0) {
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NL_SET_ERR_MSG(extack, "Failed to parse nested tunnel key attributes");
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return err;
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}
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if (!tb[TCA_TUNNEL_KEY_PARMS]) {
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NL_SET_ERR_MSG(extack, "Missing tunnel key parameters");
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return -EINVAL;
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}
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parm = nla_data(tb[TCA_TUNNEL_KEY_PARMS]);
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err = tcf_idr_check_alloc(tn, &parm->index, a, bind);
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if (err < 0)
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return err;
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exists = err;
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if (exists && bind)
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return 0;
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switch (parm->t_action) {
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case TCA_TUNNEL_KEY_ACT_RELEASE:
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break;
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case TCA_TUNNEL_KEY_ACT_SET:
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if (tb[TCA_TUNNEL_KEY_ENC_KEY_ID]) {
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__be32 key32;
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key32 = nla_get_be32(tb[TCA_TUNNEL_KEY_ENC_KEY_ID]);
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key_id = key32_to_tunnel_id(key32);
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flags = TUNNEL_KEY;
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}
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flags |= TUNNEL_CSUM;
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if (tb[TCA_TUNNEL_KEY_NO_CSUM] &&
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nla_get_u8(tb[TCA_TUNNEL_KEY_NO_CSUM]))
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flags &= ~TUNNEL_CSUM;
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if (tb[TCA_TUNNEL_KEY_ENC_DST_PORT])
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dst_port = nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_DST_PORT]);
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if (tb[TCA_TUNNEL_KEY_ENC_OPTS]) {
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opts_len = tunnel_key_get_opts_len(tb[TCA_TUNNEL_KEY_ENC_OPTS],
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extack);
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if (opts_len < 0) {
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ret = opts_len;
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goto err_out;
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}
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}
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tos = 0;
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if (tb[TCA_TUNNEL_KEY_ENC_TOS])
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tos = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_TOS]);
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ttl = 0;
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if (tb[TCA_TUNNEL_KEY_ENC_TTL])
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ttl = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_TTL]);
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if (tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC] &&
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tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]) {
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__be32 saddr;
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__be32 daddr;
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saddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC]);
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daddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]);
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metadata = __ip_tun_set_dst(saddr, daddr, tos, ttl,
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dst_port, flags,
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key_id, opts_len);
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} else if (tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC] &&
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tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]) {
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struct in6_addr saddr;
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struct in6_addr daddr;
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saddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC]);
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daddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]);
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metadata = __ipv6_tun_set_dst(&saddr, &daddr, tos, ttl, dst_port,
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0, flags,
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key_id, 0);
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} else {
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NL_SET_ERR_MSG(extack, "Missing either ipv4 or ipv6 src and dst");
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ret = -EINVAL;
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goto err_out;
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}
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if (!metadata) {
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NL_SET_ERR_MSG(extack, "Cannot allocate tunnel metadata dst");
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ret = -ENOMEM;
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goto err_out;
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}
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#ifdef CONFIG_DST_CACHE
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ret = dst_cache_init(&metadata->u.tun_info.dst_cache, GFP_KERNEL);
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if (ret)
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goto release_tun_meta;
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#endif
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if (opts_len) {
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ret = tunnel_key_opts_set(tb[TCA_TUNNEL_KEY_ENC_OPTS],
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&metadata->u.tun_info,
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opts_len, extack);
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if (ret < 0)
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goto release_tun_meta;
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}
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metadata->u.tun_info.mode |= IP_TUNNEL_INFO_TX;
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break;
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default:
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NL_SET_ERR_MSG(extack, "Unknown tunnel key action");
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ret = -EINVAL;
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goto err_out;
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}
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if (!exists) {
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ret = tcf_idr_create(tn, parm->index, est, a,
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&act_tunnel_key_ops, bind, true);
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if (ret) {
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NL_SET_ERR_MSG(extack, "Cannot create TC IDR");
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goto release_tun_meta;
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}
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ret = ACT_P_CREATED;
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} else if (!ovr) {
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NL_SET_ERR_MSG(extack, "TC IDR already exists");
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ret = -EEXIST;
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goto release_tun_meta;
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}
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err = tcf_action_check_ctrlact(parm->action, tp, &goto_ch, extack);
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if (err < 0) {
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ret = err;
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exists = true;
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goto release_tun_meta;
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}
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t = to_tunnel_key(*a);
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params_new = kzalloc(sizeof(*params_new), GFP_KERNEL);
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if (unlikely(!params_new)) {
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NL_SET_ERR_MSG(extack, "Cannot allocate tunnel key parameters");
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ret = -ENOMEM;
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exists = true;
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goto put_chain;
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}
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params_new->tcft_action = parm->t_action;
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params_new->tcft_enc_metadata = metadata;
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spin_lock_bh(&t->tcf_lock);
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goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch);
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rcu_swap_protected(t->params, params_new,
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lockdep_is_held(&t->tcf_lock));
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spin_unlock_bh(&t->tcf_lock);
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tunnel_key_release_params(params_new);
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if (goto_ch)
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tcf_chain_put_by_act(goto_ch);
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if (ret == ACT_P_CREATED)
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tcf_idr_insert(tn, *a);
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return ret;
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put_chain:
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if (goto_ch)
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tcf_chain_put_by_act(goto_ch);
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release_tun_meta:
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if (metadata)
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dst_release(&metadata->dst);
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err_out:
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if (exists)
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tcf_idr_release(*a, bind);
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else
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tcf_idr_cleanup(tn, parm->index);
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return ret;
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}
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static void tunnel_key_release(struct tc_action *a)
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{
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struct tcf_tunnel_key *t = to_tunnel_key(a);
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struct tcf_tunnel_key_params *params;
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params = rcu_dereference_protected(t->params, 1);
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tunnel_key_release_params(params);
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}
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static int tunnel_key_geneve_opts_dump(struct sk_buff *skb,
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const struct ip_tunnel_info *info)
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{
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int len = info->options_len;
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u8 *src = (u8 *)(info + 1);
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struct nlattr *start;
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start = nla_nest_start_noflag(skb, TCA_TUNNEL_KEY_ENC_OPTS_GENEVE);
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if (!start)
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return -EMSGSIZE;
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while (len > 0) {
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struct geneve_opt *opt = (struct geneve_opt *)src;
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if (nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS,
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opt->opt_class) ||
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nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE,
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opt->type) ||
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nla_put(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA,
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opt->length * 4, opt + 1)) {
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nla_nest_cancel(skb, start);
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return -EMSGSIZE;
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}
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len -= sizeof(struct geneve_opt) + opt->length * 4;
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src += sizeof(struct geneve_opt) + opt->length * 4;
|
|
}
|
|
|
|
nla_nest_end(skb, start);
|
|
return 0;
|
|
}
|
|
|
|
static int tunnel_key_opts_dump(struct sk_buff *skb,
|
|
const struct ip_tunnel_info *info)
|
|
{
|
|
struct nlattr *start;
|
|
int err = -EINVAL;
|
|
|
|
if (!info->options_len)
|
|
return 0;
|
|
|
|
start = nla_nest_start_noflag(skb, TCA_TUNNEL_KEY_ENC_OPTS);
|
|
if (!start)
|
|
return -EMSGSIZE;
|
|
|
|
if (info->key.tun_flags & TUNNEL_GENEVE_OPT) {
|
|
err = tunnel_key_geneve_opts_dump(skb, info);
|
|
if (err)
|
|
goto err_out;
|
|
} else {
|
|
err_out:
|
|
nla_nest_cancel(skb, start);
|
|
return err;
|
|
}
|
|
|
|
nla_nest_end(skb, start);
|
|
return 0;
|
|
}
|
|
|
|
static int tunnel_key_dump_addresses(struct sk_buff *skb,
|
|
const struct ip_tunnel_info *info)
|
|
{
|
|
unsigned short family = ip_tunnel_info_af(info);
|
|
|
|
if (family == AF_INET) {
|
|
__be32 saddr = info->key.u.ipv4.src;
|
|
__be32 daddr = info->key.u.ipv4.dst;
|
|
|
|
if (!nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_SRC, saddr) &&
|
|
!nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_DST, daddr))
|
|
return 0;
|
|
}
|
|
|
|
if (family == AF_INET6) {
|
|
const struct in6_addr *saddr6 = &info->key.u.ipv6.src;
|
|
const struct in6_addr *daddr6 = &info->key.u.ipv6.dst;
|
|
|
|
if (!nla_put_in6_addr(skb,
|
|
TCA_TUNNEL_KEY_ENC_IPV6_SRC, saddr6) &&
|
|
!nla_put_in6_addr(skb,
|
|
TCA_TUNNEL_KEY_ENC_IPV6_DST, daddr6))
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a,
|
|
int bind, int ref)
|
|
{
|
|
unsigned char *b = skb_tail_pointer(skb);
|
|
struct tcf_tunnel_key *t = to_tunnel_key(a);
|
|
struct tcf_tunnel_key_params *params;
|
|
struct tc_tunnel_key opt = {
|
|
.index = t->tcf_index,
|
|
.refcnt = refcount_read(&t->tcf_refcnt) - ref,
|
|
.bindcnt = atomic_read(&t->tcf_bindcnt) - bind,
|
|
};
|
|
struct tcf_t tm;
|
|
|
|
spin_lock_bh(&t->tcf_lock);
|
|
params = rcu_dereference_protected(t->params,
|
|
lockdep_is_held(&t->tcf_lock));
|
|
opt.action = t->tcf_action;
|
|
opt.t_action = params->tcft_action;
|
|
|
|
if (nla_put(skb, TCA_TUNNEL_KEY_PARMS, sizeof(opt), &opt))
|
|
goto nla_put_failure;
|
|
|
|
if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET) {
|
|
struct ip_tunnel_info *info =
|
|
¶ms->tcft_enc_metadata->u.tun_info;
|
|
struct ip_tunnel_key *key = &info->key;
|
|
__be32 key_id = tunnel_id_to_key32(key->tun_id);
|
|
|
|
if (((key->tun_flags & TUNNEL_KEY) &&
|
|
nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_KEY_ID, key_id)) ||
|
|
tunnel_key_dump_addresses(skb,
|
|
¶ms->tcft_enc_metadata->u.tun_info) ||
|
|
(key->tp_dst &&
|
|
nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT,
|
|
key->tp_dst)) ||
|
|
nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM,
|
|
!(key->tun_flags & TUNNEL_CSUM)) ||
|
|
tunnel_key_opts_dump(skb, info))
|
|
goto nla_put_failure;
|
|
|
|
if (key->tos && nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_TOS, key->tos))
|
|
goto nla_put_failure;
|
|
|
|
if (key->ttl && nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_TTL, key->ttl))
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
tcf_tm_dump(&tm, &t->tcf_tm);
|
|
if (nla_put_64bit(skb, TCA_TUNNEL_KEY_TM, sizeof(tm),
|
|
&tm, TCA_TUNNEL_KEY_PAD))
|
|
goto nla_put_failure;
|
|
spin_unlock_bh(&t->tcf_lock);
|
|
|
|
return skb->len;
|
|
|
|
nla_put_failure:
|
|
spin_unlock_bh(&t->tcf_lock);
|
|
nlmsg_trim(skb, b);
|
|
return -1;
|
|
}
|
|
|
|
static int tunnel_key_walker(struct net *net, struct sk_buff *skb,
|
|
struct netlink_callback *cb, int type,
|
|
const struct tc_action_ops *ops,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
|
|
|
|
return tcf_generic_walker(tn, skb, cb, type, ops, extack);
|
|
}
|
|
|
|
static int tunnel_key_search(struct net *net, struct tc_action **a, u32 index)
|
|
{
|
|
struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
|
|
|
|
return tcf_idr_search(tn, a, index);
|
|
}
|
|
|
|
static struct tc_action_ops act_tunnel_key_ops = {
|
|
.kind = "tunnel_key",
|
|
.id = TCA_ID_TUNNEL_KEY,
|
|
.owner = THIS_MODULE,
|
|
.act = tunnel_key_act,
|
|
.dump = tunnel_key_dump,
|
|
.init = tunnel_key_init,
|
|
.cleanup = tunnel_key_release,
|
|
.walk = tunnel_key_walker,
|
|
.lookup = tunnel_key_search,
|
|
.size = sizeof(struct tcf_tunnel_key),
|
|
};
|
|
|
|
static __net_init int tunnel_key_init_net(struct net *net)
|
|
{
|
|
struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
|
|
|
|
return tc_action_net_init(tn, &act_tunnel_key_ops);
|
|
}
|
|
|
|
static void __net_exit tunnel_key_exit_net(struct list_head *net_list)
|
|
{
|
|
tc_action_net_exit(net_list, tunnel_key_net_id);
|
|
}
|
|
|
|
static struct pernet_operations tunnel_key_net_ops = {
|
|
.init = tunnel_key_init_net,
|
|
.exit_batch = tunnel_key_exit_net,
|
|
.id = &tunnel_key_net_id,
|
|
.size = sizeof(struct tc_action_net),
|
|
};
|
|
|
|
static int __init tunnel_key_init_module(void)
|
|
{
|
|
return tcf_register_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
|
|
}
|
|
|
|
static void __exit tunnel_key_cleanup_module(void)
|
|
{
|
|
tcf_unregister_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
|
|
}
|
|
|
|
module_init(tunnel_key_init_module);
|
|
module_exit(tunnel_key_cleanup_module);
|
|
|
|
MODULE_AUTHOR("Amir Vadai <amir@vadai.me>");
|
|
MODULE_DESCRIPTION("ip tunnel manipulation actions");
|
|
MODULE_LICENSE("GPL v2");
|