]>
Commit | Line | Data |
---|---|---|
db753079 JHS |
1 | /* |
2 | * net/sched/simp.c Simple example of an action | |
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 | * Authors: Jamal Hadi Salim (2005) | |
10 | * | |
11 | */ | |
12 | ||
db753079 | 13 | #include <linux/config.h> |
cbdbf00a DM |
14 | #include <linux/module.h> |
15 | #include <linux/init.h> | |
db753079 | 16 | #include <linux/kernel.h> |
db753079 JHS |
17 | #include <linux/netdevice.h> |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/rtnetlink.h> | |
db753079 JHS |
20 | #include <net/pkt_sched.h> |
21 | ||
22 | #define TCA_ACT_SIMP 22 | |
23 | ||
24 | /* XXX: Hide all these common elements under some macro | |
25 | * probably | |
26 | */ | |
27 | #include <linux/tc_act/tc_defact.h> | |
28 | #include <net/tc_act/tc_defact.h> | |
29 | ||
30 | /* use generic hash table with 8 buckets */ | |
31 | #define MY_TAB_SIZE 8 | |
32 | #define MY_TAB_MASK (MY_TAB_SIZE - 1) | |
33 | static u32 idx_gen; | |
34 | static struct tcf_defact *tcf_simp_ht[MY_TAB_SIZE]; | |
35 | static DEFINE_RWLOCK(simp_lock); | |
36 | ||
37 | /* override the defaults */ | |
38 | #define tcf_st tcf_defact | |
39 | #define tc_st tc_defact | |
40 | #define tcf_t_lock simp_lock | |
41 | #define tcf_ht tcf_simp_ht | |
42 | ||
43 | #define CONFIG_NET_ACT_INIT 1 | |
44 | #include <net/pkt_act.h> | |
45 | #include <net/act_generic.h> | |
46 | ||
47 | static int tcf_simp(struct sk_buff **pskb, struct tc_action *a) | |
48 | { | |
49 | struct sk_buff *skb = *pskb; | |
50 | struct tcf_defact *p = PRIV(a, defact); | |
51 | ||
52 | spin_lock(&p->lock); | |
53 | p->tm.lastuse = jiffies; | |
54 | p->bstats.bytes += skb->len; | |
55 | p->bstats.packets++; | |
56 | ||
57 | /* print policy string followed by _ then packet count | |
58 | * Example if this was the 3rd packet and the string was "hello" | |
59 | * then it would look like "hello_3" (without quotes) | |
60 | **/ | |
61 | printk("simple: %s_%d\n", (char *)p->defdata, p->bstats.packets); | |
62 | spin_unlock(&p->lock); | |
63 | return p->action; | |
64 | } | |
65 | ||
66 | static struct tc_action_ops act_simp_ops = { | |
67 | .kind = "simple", | |
68 | .type = TCA_ACT_SIMP, | |
69 | .capab = TCA_CAP_NONE, | |
70 | .owner = THIS_MODULE, | |
71 | .act = tcf_simp, | |
72 | tca_use_default_ops | |
73 | }; | |
74 | ||
75 | MODULE_AUTHOR("Jamal Hadi Salim(2005)"); | |
76 | MODULE_DESCRIPTION("Simple example action"); | |
77 | MODULE_LICENSE("GPL"); | |
78 | ||
79 | static int __init simp_init_module(void) | |
80 | { | |
81 | int ret = tcf_register_action(&act_simp_ops); | |
82 | if (!ret) | |
83 | printk("Simple TC action Loaded\n"); | |
84 | return ret; | |
85 | } | |
86 | ||
87 | static void __exit simp_cleanup_module(void) | |
88 | { | |
89 | tcf_unregister_action(&act_simp_ops); | |
90 | } | |
91 | ||
92 | module_init(simp_init_module); | |
93 | module_exit(simp_cleanup_module); |