Release 4.7 net/sched/cls_basic.c
/*
* net/sched/cls_basic.c Basic Packet Classifier.
*
* 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.
*
* Authors: Thomas Graf <tgraf@suug.ch>
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/rtnetlink.h>
#include <linux/skbuff.h>
#include <net/netlink.h>
#include <net/act_api.h>
#include <net/pkt_cls.h>
struct basic_head {
u32 hgenerator;
struct list_head flist;
struct rcu_head rcu;
};
struct basic_filter {
u32 handle;
struct tcf_exts exts;
struct tcf_ematch_tree ematches;
struct tcf_result res;
struct tcf_proto *tp;
struct list_head link;
struct rcu_head rcu;
};
static int basic_classify(struct sk_buff *skb, const struct tcf_proto *tp,
struct tcf_result *res)
{
int r;
struct basic_head *head = rcu_dereference_bh(tp->root);
struct basic_filter *f;
list_for_each_entry_rcu(f, &head->flist, link) {
if (!tcf_em_tree_match(skb, &f->ematches, NULL))
continue;
*res = f->res;
r = tcf_exts_exec(skb, &f->exts, res);
if (r < 0)
continue;
return r;
}
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 98 | 95.15% | 1 | 33.33% |
john fastabend | john fastabend | 4 | 3.88% | 1 | 33.33% |
eric dumazet | eric dumazet | 1 | 0.97% | 1 | 33.33% |
| Total | 103 | 100.00% | 3 | 100.00% |
static unsigned long basic_get(struct tcf_proto *tp, u32 handle)
{
unsigned long l = 0UL;
struct basic_head *head = rtnl_dereference(tp->root);
struct basic_filter *f;
if (head == NULL)
return 0UL;
list_for_each_entry(f, &head->flist, link) {
if (f->handle == handle) {
l = (unsigned long) f;
break;
}
}
return l;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 71 | 89.87% | 1 | 33.33% |
daniel borkmann | daniel borkmann | 5 | 6.33% | 1 | 33.33% |
john fastabend | john fastabend | 3 | 3.80% | 1 | 33.33% |
| Total | 79 | 100.00% | 3 | 100.00% |
static int basic_init(struct tcf_proto *tp)
{
struct basic_head *head;
head = kzalloc(sizeof(*head), GFP_KERNEL);
if (head == NULL)
return -ENOBUFS;
INIT_LIST_HEAD(&head->flist);
rcu_assign_pointer(tp->root, head);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
patrick mchardy | patrick mchardy | 41 | 69.49% | 1 | 33.33% |
david s. miller | david s. miller | 14 | 23.73% | 1 | 33.33% |
john fastabend | john fastabend | 4 | 6.78% | 1 | 33.33% |
| Total | 59 | 100.00% | 3 | 100.00% |
static void basic_delete_filter(struct rcu_head *head)
{
struct basic_filter *f = container_of(head, struct basic_filter, rcu);
tcf_exts_destroy(&f->exts);
tcf_em_tree_destroy(&f->ematches);
kfree(f);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 32 | 68.09% | 1 | 50.00% |
john fastabend | john fastabend | 15 | 31.91% | 1 | 50.00% |
| Total | 47 | 100.00% | 2 | 100.00% |
static bool basic_destroy(struct tcf_proto *tp, bool force)
{
struct basic_head *head = rtnl_dereference(tp->root);
struct basic_filter *f, *n;
if (!force && !list_empty(&head->flist))
return false;
list_for_each_entry_safe(f, n, &head->flist, link) {
list_del_rcu(&f->link);
tcf_unbind_filter(tp, &f->res);
call_rcu(&f->rcu, basic_delete_filter);
}
RCU_INIT_POINTER(tp->root, NULL);
kfree_rcu(head, rcu);
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 51 | 46.36% | 1 | 20.00% |
john fastabend | john fastabend | 31 | 28.18% | 2 | 40.00% |
cong wang | cong wang | 24 | 21.82% | 1 | 20.00% |
patrick mchardy | patrick mchardy | 4 | 3.64% | 1 | 20.00% |
| Total | 110 | 100.00% | 5 | 100.00% |
static int basic_delete(struct tcf_proto *tp, unsigned long arg)
{
struct basic_filter *f = (struct basic_filter *) arg;
list_del_rcu(&f->link);
tcf_unbind_filter(tp, &f->res);
call_rcu(&f->rcu, basic_delete_filter);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 39 | 67.24% | 1 | 25.00% |
john fastabend | john fastabend | 16 | 27.59% | 2 | 50.00% |
jiri pirko | jiri pirko | 3 | 5.17% | 1 | 25.00% |
| Total | 58 | 100.00% | 4 | 100.00% |
static const struct nla_policy basic_policy[TCA_BASIC_MAX + 1] = {
[TCA_BASIC_CLASSID] = { .type = NLA_U32 },
[TCA_BASIC_EMATCHES] = { .type = NLA_NESTED },
};
static int basic_set_parms(struct net *net, struct tcf_proto *tp,
struct basic_filter *f, unsigned long base,
struct nlattr **tb,
struct nlattr *est, bool ovr)
{
int err;
struct tcf_exts e;
struct tcf_ematch_tree t;
tcf_exts_init(&e, TCA_BASIC_ACT, TCA_BASIC_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0)
return err;
err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES], &t);
if (err < 0)
goto errout;
if (tb[TCA_BASIC_CLASSID]) {
f->res.classid = nla_get_u32(tb[TCA_BASIC_CLASSID]);
tcf_bind_filter(tp, &f->res, base);
}
tcf_exts_change(tp, &f->exts, &e);
tcf_em_tree_change(tp, &f->ematches, &t);
f->tp = tp;
return 0;
errout:
tcf_exts_destroy(&e);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 161 | 83.85% | 1 | 14.29% |
americo wang | americo wang | 10 | 5.21% | 1 | 14.29% |
benjamin lahaise | benjamin lahaise | 7 | 3.65% | 1 | 14.29% |
john fastabend | john fastabend | 6 | 3.12% | 1 | 14.29% |
cong wang | cong wang | 5 | 2.60% | 1 | 14.29% |
patrick mchardy | patrick mchardy | 3 | 1.56% | 2 | 28.57% |
| Total | 192 | 100.00% | 7 | 100.00% |
static int basic_change(struct net *net, struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base, u32 handle,
struct nlattr **tca, unsigned long *arg, bool ovr)
{
int err;
struct basic_head *head = rtnl_dereference(tp->root);
struct nlattr *tb[TCA_BASIC_MAX + 1];
struct basic_filter *fold = (struct basic_filter *) *arg;
struct basic_filter *fnew;
if (tca[TCA_OPTIONS] == NULL)
return -EINVAL;
err = nla_parse_nested(tb, TCA_BASIC_MAX, tca[TCA_OPTIONS],
basic_policy);
if (err < 0)
return err;
if (fold != NULL) {
if (handle && fold->handle != handle)
return -EINVAL;
}
fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
if (!fnew)
return -ENOBUFS;
tcf_exts_init(&fnew->exts, TCA_BASIC_ACT, TCA_BASIC_POLICE);
err = -EINVAL;
if (handle) {
fnew->handle = handle;
} else if (fold) {
fnew->handle = fold->handle;
} else {
unsigned int i = 0x80000000;
do {
if (++head->hgenerator == 0x7FFFFFFF)
head->hgenerator = 1;
} while (--i > 0 && basic_get(tp, head->hgenerator));
if (i <= 0) {
pr_err("Insufficient number of handles\n");
goto errout;
}
fnew->handle = head->hgenerator;
}
err = basic_set_parms(net, tp, fnew, base, tb, tca[TCA_RATE], ovr);
if (err < 0)
goto errout;
*arg = (unsigned long)fnew;
if (fold) {
list_replace_rcu(&fold->link, &fnew->link);
tcf_unbind_filter(tp, &fold->res);
call_rcu(&fold->rcu, basic_delete_filter);
} else {
list_add_rcu(&fnew->link, &head->flist);
}
return 0;
errout:
kfree(fnew);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 251 | 64.86% | 1 | 6.67% |
john fastabend | john fastabend | 86 | 22.22% | 2 | 13.33% |
patrick mchardy | patrick mchardy | 14 | 3.62% | 3 | 20.00% |
americo wang | americo wang | 11 | 2.84% | 2 | 13.33% |
benjamin lahaise | benjamin lahaise | 7 | 1.81% | 1 | 6.67% |
cong wang | cong wang | 5 | 1.29% | 1 | 6.67% |
eric w. biederman | eric w. biederman | 5 | 1.29% | 1 | 6.67% |
jiri pirko | jiri pirko | 5 | 1.29% | 1 | 6.67% |
eric dumazet | eric dumazet | 1 | 0.26% | 1 | 6.67% |
kim nordlund | kim nordlund | 1 | 0.26% | 1 | 6.67% |
panagiotis issaris* | panagiotis issaris* | 1 | 0.26% | 1 | 6.67% |
| Total | 387 | 100.00% | 15 | 100.00% |
static void basic_walk(struct tcf_proto *tp, struct tcf_walker *arg)
{
struct basic_head *head = rtnl_dereference(tp->root);
struct basic_filter *f;
list_for_each_entry(f, &head->flist, link) {
if (arg->count < arg->skip)
goto skip;
if (arg->fn(tp, (unsigned long) f, arg) < 0) {
arg->stop = 1;
break;
}
skip:
arg->count++;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 88 | 96.70% | 1 | 50.00% |
john fastabend | john fastabend | 3 | 3.30% | 1 | 50.00% |
| Total | 91 | 100.00% | 2 | 100.00% |
static int basic_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
struct sk_buff *skb, struct tcmsg *t)
{
struct basic_filter *f = (struct basic_filter *) fh;
struct nlattr *nest;
if (f == NULL)
return skb->len;
t->tcm_handle = f->handle;
nest = nla_nest_start(skb, TCA_OPTIONS);
if (nest == NULL)
goto nla_put_failure;
if (f->res.classid &&
nla_put_u32(skb, TCA_BASIC_CLASSID, f->res.classid))
goto nla_put_failure;
if (tcf_exts_dump(skb, &f->exts) < 0 ||
tcf_em_tree_dump(skb, &f->ematches, TCA_BASIC_EMATCHES) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts) < 0)
goto nla_put_failure;
return skb->len;
nla_put_failure:
nla_nest_cancel(skb, nest);
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 119 | 65.75% | 2 | 25.00% |
patrick mchardy | patrick mchardy | 20 | 11.05% | 2 | 25.00% |
thomas graf | thomas graf | 18 | 9.94% | 1 | 12.50% |
stephen hemminger | stephen hemminger | 17 | 9.39% | 1 | 12.50% |
americo wang | americo wang | 5 | 2.76% | 1 | 12.50% |
arnaldo carvalho de melo | arnaldo carvalho de melo | 2 | 1.10% | 1 | 12.50% |
| Total | 181 | 100.00% | 8 | 100.00% |
static struct tcf_proto_ops cls_basic_ops __read_mostly = {
.kind = "basic",
.classify = basic_classify,
.init = basic_init,
.destroy = basic_destroy,
.get = basic_get,
.change = basic_change,
.delete = basic_delete,
.walk = basic_walk,
.dump = basic_dump,
.owner = THIS_MODULE,
};
static int __init init_basic(void)
{
return register_tcf_proto_ops(&cls_basic_ops);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
static void __exit exit_basic(void)
{
unregister_tcf_proto_ops(&cls_basic_ops);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_init(init_basic)
module_exit(exit_basic)
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david s. miller | david s. miller | 1089 | 71.32% | 2 | 6.45% |
john fastabend | john fastabend | 181 | 11.85% | 2 | 6.45% |
patrick mchardy | patrick mchardy | 118 | 7.73% | 8 | 25.81% |
cong wang | cong wang | 34 | 2.23% | 2 | 6.45% |
americo wang | americo wang | 26 | 1.70% | 3 | 9.68% |
thomas graf | thomas graf | 18 | 1.18% | 1 | 3.23% |
stephen hemminger | stephen hemminger | 17 | 1.11% | 1 | 3.23% |
benjamin lahaise | benjamin lahaise | 14 | 0.92% | 1 | 3.23% |
jiri pirko | jiri pirko | 8 | 0.52% | 2 | 6.45% |
daniel borkmann | daniel borkmann | 5 | 0.33% | 1 | 3.23% |
arnaldo carvalho de melo | arnaldo carvalho de melo | 5 | 0.33% | 2 | 6.45% |
eric w. biederman | eric w. biederman | 5 | 0.33% | 1 | 3.23% |
tejun heo | tejun heo | 3 | 0.20% | 1 | 3.23% |
eric dumazet | eric dumazet | 2 | 0.13% | 2 | 6.45% |
panagiotis issaris* | panagiotis issaris* | 1 | 0.07% | 1 | 3.23% |
kim nordlund | kim nordlund | 1 | 0.07% | 1 | 3.23% |
| Total | 1527 | 100.00% | 31 | 100.00% |
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