act_connmark.c (8c57a5e7b2820f349c95b8c8393fec1e0f4070d2) act_connmark.c (a85a970af265f156740977168b542234511b28a8)
1/*
2 * net/sched/act_connmark.c netfilter connmark retriever action
3 * skb mark is over-written
4 *
5 * Copyright (c) 2011 Felix Fietkau <nbd@openwrt.org>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by

--- 17 unchanged lines hidden (view full) ---

26
27#include <net/netfilter/nf_conntrack.h>
28#include <net/netfilter/nf_conntrack_core.h>
29#include <net/netfilter/nf_conntrack_zones.h>
30
31#define CONNMARK_TAB_MASK 3
32
33static int connmark_net_id;
1/*
2 * net/sched/act_connmark.c netfilter connmark retriever action
3 * skb mark is over-written
4 *
5 * Copyright (c) 2011 Felix Fietkau <nbd@openwrt.org>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by

--- 17 unchanged lines hidden (view full) ---

26
27#include <net/netfilter/nf_conntrack.h>
28#include <net/netfilter/nf_conntrack_core.h>
29#include <net/netfilter/nf_conntrack_zones.h>
30
31#define CONNMARK_TAB_MASK 3
32
33static int connmark_net_id;
34static struct tc_action_ops act_connmark_ops;
34
35static int tcf_connmark(struct sk_buff *skb, const struct tc_action *a,
36 struct tcf_result *res)
37{
38 const struct nf_conntrack_tuple_hash *thash;
39 struct nf_conntrack_tuple tuple;
40 enum ip_conntrack_info ctinfo;
35
36static int tcf_connmark(struct sk_buff *skb, const struct tc_action *a,
37 struct tcf_result *res)
38{
39 const struct nf_conntrack_tuple_hash *thash;
40 struct nf_conntrack_tuple tuple;
41 enum ip_conntrack_info ctinfo;
41 struct tcf_connmark_info *ca = a->priv;
42 struct tcf_connmark_info *ca = to_connmark(a);
42 struct nf_conntrack_zone zone;
43 struct nf_conn *c;
44 int proto;
45
46 spin_lock(&ca->tcf_lock);
43 struct nf_conntrack_zone zone;
44 struct nf_conn *c;
45 int proto;
46
47 spin_lock(&ca->tcf_lock);
47 ca->tcf_tm.lastuse = jiffies;
48 tcf_lastuse_update(&ca->tcf_tm);
48 bstats_update(&ca->tcf_bstats, skb);
49
50 if (skb->protocol == htons(ETH_P_IP)) {
51 if (skb->len < sizeof(struct iphdr))
52 goto out;
53
54 proto = NFPROTO_IPV4;
55 } else if (skb->protocol == htons(ETH_P_IPV6)) {

--- 35 unchanged lines hidden (view full) ---

91 return ca->tcf_action;
92}
93
94static const struct nla_policy connmark_policy[TCA_CONNMARK_MAX + 1] = {
95 [TCA_CONNMARK_PARMS] = { .len = sizeof(struct tc_connmark) },
96};
97
98static int tcf_connmark_init(struct net *net, struct nlattr *nla,
49 bstats_update(&ca->tcf_bstats, skb);
50
51 if (skb->protocol == htons(ETH_P_IP)) {
52 if (skb->len < sizeof(struct iphdr))
53 goto out;
54
55 proto = NFPROTO_IPV4;
56 } else if (skb->protocol == htons(ETH_P_IPV6)) {

--- 35 unchanged lines hidden (view full) ---

92 return ca->tcf_action;
93}
94
95static const struct nla_policy connmark_policy[TCA_CONNMARK_MAX + 1] = {
96 [TCA_CONNMARK_PARMS] = { .len = sizeof(struct tc_connmark) },
97};
98
99static int tcf_connmark_init(struct net *net, struct nlattr *nla,
99 struct nlattr *est, struct tc_action *a,
100 struct nlattr *est, struct tc_action **a,
100 int ovr, int bind)
101{
102 struct tc_action_net *tn = net_generic(net, connmark_net_id);
103 struct nlattr *tb[TCA_CONNMARK_MAX + 1];
104 struct tcf_connmark_info *ci;
105 struct tc_connmark *parm;
106 int ret = 0;
107
108 if (!nla)
109 return -EINVAL;
110
111 ret = nla_parse_nested(tb, TCA_CONNMARK_MAX, nla, connmark_policy);
112 if (ret < 0)
113 return ret;
114
115 parm = nla_data(tb[TCA_CONNMARK_PARMS]);
116
117 if (!tcf_hash_check(tn, parm->index, a, bind)) {
118 ret = tcf_hash_create(tn, parm->index, est, a,
101 int ovr, int bind)
102{
103 struct tc_action_net *tn = net_generic(net, connmark_net_id);
104 struct nlattr *tb[TCA_CONNMARK_MAX + 1];
105 struct tcf_connmark_info *ci;
106 struct tc_connmark *parm;
107 int ret = 0;
108
109 if (!nla)
110 return -EINVAL;
111
112 ret = nla_parse_nested(tb, TCA_CONNMARK_MAX, nla, connmark_policy);
113 if (ret < 0)
114 return ret;
115
116 parm = nla_data(tb[TCA_CONNMARK_PARMS]);
117
118 if (!tcf_hash_check(tn, parm->index, a, bind)) {
119 ret = tcf_hash_create(tn, parm->index, est, a,
119 sizeof(*ci), bind, false);
120 &act_connmark_ops, bind, false);
120 if (ret)
121 return ret;
122
121 if (ret)
122 return ret;
123
123 ci = to_connmark(a);
124 ci = to_connmark(*a);
124 ci->tcf_action = parm->action;
125 ci->net = net;
126 ci->zone = parm->zone;
127
125 ci->tcf_action = parm->action;
126 ci->net = net;
127 ci->zone = parm->zone;
128
128 tcf_hash_insert(tn, a);
129 tcf_hash_insert(tn, *a);
129 ret = ACT_P_CREATED;
130 } else {
130 ret = ACT_P_CREATED;
131 } else {
131 ci = to_connmark(a);
132 ci = to_connmark(*a);
132 if (bind)
133 return 0;
133 if (bind)
134 return 0;
134 tcf_hash_release(a, bind);
135 tcf_hash_release(*a, bind);
135 if (!ovr)
136 return -EEXIST;
137 /* replacing action and zone */
138 ci->tcf_action = parm->action;
139 ci->zone = parm->zone;
140 }
141
142 return ret;
143}
144
145static inline int tcf_connmark_dump(struct sk_buff *skb, struct tc_action *a,
146 int bind, int ref)
147{
148 unsigned char *b = skb_tail_pointer(skb);
136 if (!ovr)
137 return -EEXIST;
138 /* replacing action and zone */
139 ci->tcf_action = parm->action;
140 ci->zone = parm->zone;
141 }
142
143 return ret;
144}
145
146static inline int tcf_connmark_dump(struct sk_buff *skb, struct tc_action *a,
147 int bind, int ref)
148{
149 unsigned char *b = skb_tail_pointer(skb);
149 struct tcf_connmark_info *ci = a->priv;
150 struct tcf_connmark_info *ci = to_connmark(a);
150
151 struct tc_connmark opt = {
152 .index = ci->tcf_index,
153 .refcnt = ci->tcf_refcnt - ref,
154 .bindcnt = ci->tcf_bindcnt - bind,
155 .action = ci->tcf_action,
156 .zone = ci->zone,
157 };
158 struct tcf_t t;
159
160 if (nla_put(skb, TCA_CONNMARK_PARMS, sizeof(opt), &opt))
161 goto nla_put_failure;
162
151
152 struct tc_connmark opt = {
153 .index = ci->tcf_index,
154 .refcnt = ci->tcf_refcnt - ref,
155 .bindcnt = ci->tcf_bindcnt - bind,
156 .action = ci->tcf_action,
157 .zone = ci->zone,
158 };
159 struct tcf_t t;
160
161 if (nla_put(skb, TCA_CONNMARK_PARMS, sizeof(opt), &opt))
162 goto nla_put_failure;
163
163 t.install = jiffies_to_clock_t(jiffies - ci->tcf_tm.install);
164 t.lastuse = jiffies_to_clock_t(jiffies - ci->tcf_tm.lastuse);
165 t.expires = jiffies_to_clock_t(ci->tcf_tm.expires);
166 if (nla_put(skb, TCA_CONNMARK_TM, sizeof(t), &t))
164 tcf_tm_dump(&t, &ci->tcf_tm);
165 if (nla_put_64bit(skb, TCA_CONNMARK_TM, sizeof(t), &t,
166 TCA_CONNMARK_PAD))
167 goto nla_put_failure;
168
169 return skb->len;
170nla_put_failure:
171 nlmsg_trim(skb, b);
172 return -1;
173}
174
175static int tcf_connmark_walker(struct net *net, struct sk_buff *skb,
176 struct netlink_callback *cb, int type,
167 goto nla_put_failure;
168
169 return skb->len;
170nla_put_failure:
171 nlmsg_trim(skb, b);
172 return -1;
173}
174
175static int tcf_connmark_walker(struct net *net, struct sk_buff *skb,
176 struct netlink_callback *cb, int type,
177 struct tc_action *a)
177 const struct tc_action_ops *ops)
178{
179 struct tc_action_net *tn = net_generic(net, connmark_net_id);
180
178{
179 struct tc_action_net *tn = net_generic(net, connmark_net_id);
180
181 return tcf_generic_walker(tn, skb, cb, type, a);
181 return tcf_generic_walker(tn, skb, cb, type, ops);
182}
183
182}
183
184static int tcf_connmark_search(struct net *net, struct tc_action *a, u32 index)
184static int tcf_connmark_search(struct net *net, struct tc_action **a, u32 index)
185{
186 struct tc_action_net *tn = net_generic(net, connmark_net_id);
187
188 return tcf_hash_search(tn, a, index);
189}
190
191static struct tc_action_ops act_connmark_ops = {
192 .kind = "connmark",
193 .type = TCA_ACT_CONNMARK,
194 .owner = THIS_MODULE,
195 .act = tcf_connmark,
196 .dump = tcf_connmark_dump,
197 .init = tcf_connmark_init,
198 .walk = tcf_connmark_walker,
199 .lookup = tcf_connmark_search,
185{
186 struct tc_action_net *tn = net_generic(net, connmark_net_id);
187
188 return tcf_hash_search(tn, a, index);
189}
190
191static struct tc_action_ops act_connmark_ops = {
192 .kind = "connmark",
193 .type = TCA_ACT_CONNMARK,
194 .owner = THIS_MODULE,
195 .act = tcf_connmark,
196 .dump = tcf_connmark_dump,
197 .init = tcf_connmark_init,
198 .walk = tcf_connmark_walker,
199 .lookup = tcf_connmark_search,
200 .size = sizeof(struct tcf_connmark_info),
200};
201
202static __net_init int connmark_init_net(struct net *net)
203{
204 struct tc_action_net *tn = net_generic(net, connmark_net_id);
205
206 return tc_action_net_init(tn, &act_connmark_ops, CONNMARK_TAB_MASK);
207}

--- 31 unchanged lines hidden --- 		201};
202
203static __net_init int connmark_init_net(struct net *net)
204{
205 struct tc_action_net *tn = net_generic(net, connmark_net_id);
206
207 return tc_action_net_init(tn, &act_connmark_ops, CONNMARK_TAB_MASK);
208}

--- 31 unchanged lines hidden ---