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-rw-r--r--net/sched/gact.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/net/sched/gact.c b/net/sched/gact.c
deleted file mode 100644
index a1e68f78dcc2..000000000000
--- a/net/sched/gact.c
+++ /dev/null
@@ -1,230 +0,0 @@
1/*
2 * net/sched/gact.c Generic actions
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * copyright Jamal Hadi Salim (2002-4)
10 *
11 */
12
13#include <asm/uaccess.h>
14#include <asm/system.h>
15#include <linux/bitops.h>
16#include <linux/config.h>
17#include <linux/types.h>
18#include <linux/kernel.h>
19#include <linux/sched.h>
20#include <linux/string.h>
21#include <linux/mm.h>
22#include <linux/socket.h>
23#include <linux/sockios.h>
24#include <linux/in.h>
25#include <linux/errno.h>
26#include <linux/interrupt.h>
27#include <linux/netdevice.h>
28#include <linux/skbuff.h>
29#include <linux/rtnetlink.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/proc_fs.h>
33#include <net/sock.h>
34#include <net/pkt_sched.h>
35#include <linux/tc_act/tc_gact.h>
36#include <net/tc_act/tc_gact.h>
37
38/* use generic hash table */
39#define MY_TAB_SIZE 16
40#define MY_TAB_MASK 15
41
42static u32 idx_gen;
43static struct tcf_gact *tcf_gact_ht[MY_TAB_SIZE];
44static DEFINE_RWLOCK(gact_lock);
45
46/* ovewrride the defaults */
47#define tcf_st tcf_gact
48#define tc_st tc_gact
49#define tcf_t_lock gact_lock
50#define tcf_ht tcf_gact_ht
51
52#define CONFIG_NET_ACT_INIT 1
53#include <net/pkt_act.h>
54
55#ifdef CONFIG_GACT_PROB
56static int gact_net_rand(struct tcf_gact *p)
57{
58 if (net_random()%p->pval)
59 return p->action;
60 return p->paction;
61}
62
63static int gact_determ(struct tcf_gact *p)
64{
65 if (p->bstats.packets%p->pval)
66 return p->action;
67 return p->paction;
68}
69
70typedef int (*g_rand)(struct tcf_gact *p);
71static g_rand gact_rand[MAX_RAND]= { NULL, gact_net_rand, gact_determ };
72#endif
73
74static int tcf_gact_init(struct rtattr *rta, struct rtattr *est,
75 struct tc_action *a, int ovr, int bind)
76{
77 struct rtattr *tb[TCA_GACT_MAX];
78 struct tc_gact *parm;
79 struct tcf_gact *p;
80 int ret = 0;
81
82 if (rta == NULL || rtattr_parse_nested(tb, TCA_GACT_MAX, rta) < 0)
83 return -EINVAL;
84
85 if (tb[TCA_GACT_PARMS - 1] == NULL ||
86 RTA_PAYLOAD(tb[TCA_GACT_PARMS - 1]) < sizeof(*parm))
87 return -EINVAL;
88 parm = RTA_DATA(tb[TCA_GACT_PARMS - 1]);
89
90 if (tb[TCA_GACT_PROB-1] != NULL)
91#ifdef CONFIG_GACT_PROB
92 if (RTA_PAYLOAD(tb[TCA_GACT_PROB-1]) < sizeof(struct tc_gact_p))
93 return -EINVAL;
94#else
95 return -EOPNOTSUPP;
96#endif
97
98 p = tcf_hash_check(parm->index, a, ovr, bind);
99 if (p == NULL) {
100 p = tcf_hash_create(parm->index, est, a, sizeof(*p), ovr, bind);
101 if (p == NULL)
102 return -ENOMEM;
103 ret = ACT_P_CREATED;
104 } else {
105 if (!ovr) {
106 tcf_hash_release(p, bind);
107 return -EEXIST;
108 }
109 }
110
111 spin_lock_bh(&p->lock);
112 p->action = parm->action;
113#ifdef CONFIG_GACT_PROB
114 if (tb[TCA_GACT_PROB-1] != NULL) {
115 struct tc_gact_p *p_parm = RTA_DATA(tb[TCA_GACT_PROB-1]);
116 p->paction = p_parm->paction;
117 p->pval = p_parm->pval;
118 p->ptype = p_parm->ptype;
119 }
120#endif
121 spin_unlock_bh(&p->lock);
122 if (ret == ACT_P_CREATED)
123 tcf_hash_insert(p);
124 return ret;
125}
126
127static int
128tcf_gact_cleanup(struct tc_action *a, int bind)
129{
130 struct tcf_gact *p = PRIV(a, gact);
131
132 if (p != NULL)
133 return tcf_hash_release(p, bind);
134 return 0;
135}
136
137static int
138tcf_gact(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
139{
140 struct tcf_gact *p = PRIV(a, gact);
141 int action = TC_ACT_SHOT;
142
143 spin_lock(&p->lock);
144#ifdef CONFIG_GACT_PROB
145 if (p->ptype && gact_rand[p->ptype] != NULL)
146 action = gact_rand[p->ptype](p);
147 else
148 action = p->action;
149#else
150 action = p->action;
151#endif
152 p->bstats.bytes += skb->len;
153 p->bstats.packets++;
154 if (action == TC_ACT_SHOT)
155 p->qstats.drops++;
156 p->tm.lastuse = jiffies;
157 spin_unlock(&p->lock);
158
159 return action;
160}
161
162static int
163tcf_gact_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
164{
165 unsigned char *b = skb->tail;
166 struct tc_gact opt;
167 struct tcf_gact *p = PRIV(a, gact);
168 struct tcf_t t;
169
170 opt.index = p->index;
171 opt.refcnt = p->refcnt - ref;
172 opt.bindcnt = p->bindcnt - bind;
173 opt.action = p->action;
174 RTA_PUT(skb, TCA_GACT_PARMS, sizeof(opt), &opt);
175#ifdef CONFIG_GACT_PROB
176 if (p->ptype) {
177 struct tc_gact_p p_opt;
178 p_opt.paction = p->paction;
179 p_opt.pval = p->pval;
180 p_opt.ptype = p->ptype;
181 RTA_PUT(skb, TCA_GACT_PROB, sizeof(p_opt), &p_opt);
182 }
183#endif
184 t.install = jiffies_to_clock_t(jiffies - p->tm.install);
185 t.lastuse = jiffies_to_clock_t(jiffies - p->tm.lastuse);
186 t.expires = jiffies_to_clock_t(p->tm.expires);
187 RTA_PUT(skb, TCA_GACT_TM, sizeof(t), &t);
188 return skb->len;
189
190 rtattr_failure:
191 skb_trim(skb, b - skb->data);
192 return -1;
193}
194
195static struct tc_action_ops act_gact_ops = {
196 .kind = "gact",
197 .type = TCA_ACT_GACT,
198 .capab = TCA_CAP_NONE,
199 .owner = THIS_MODULE,
200 .act = tcf_gact,
201 .dump = tcf_gact_dump,
202 .cleanup = tcf_gact_cleanup,
203 .lookup = tcf_hash_search,
204 .init = tcf_gact_init,
205 .walk = tcf_generic_walker
206};
207
208MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");
209MODULE_DESCRIPTION("Generic Classifier actions");
210MODULE_LICENSE("GPL");
211
212static int __init
213gact_init_module(void)
214{
215#ifdef CONFIG_GACT_PROB
216 printk("GACT probability on\n");
217#else
218 printk("GACT probability NOT on\n");
219#endif
220 return tcf_register_action(&act_gact_ops);
221}
222
223static void __exit
224gact_cleanup_module(void)
225{
226 tcf_unregister_action(&act_gact_ops);
227}
228
229module_init(gact_init_module);
230module_exit(gact_cleanup_module);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 00:05:19 -0500