Release 4.15 net/sched/cls_matchall.c
/*
* net/sched/cls_matchll.c Match-all classifier
*
* Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <net/sch_generic.h>
#include <net/pkt_cls.h>
struct cls_mall_head {
struct tcf_exts exts;
struct tcf_result res;
u32 handle;
u32 flags;
union {
struct work_struct work;
struct rcu_head rcu;
};
};
static int mall_classify(struct sk_buff *skb, const struct tcf_proto *tp,
struct tcf_result *res)
{
struct cls_mall_head *head = rcu_dereference_bh(tp->root);
if (tc_skip_sw(head->flags))
return -1;
*res = head->res;
return tcf_exts_exec(skb, &head->exts, res);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 46 | 68.66% | 1 | 25.00% |
Yotam Gigi | 14 | 20.90% | 2 | 50.00% |
Davide Caratti | 7 | 10.45% | 1 | 25.00% |
Total | 67 | 100.00% | 4 | 100.00% |
static int mall_init(struct tcf_proto *tp)
{
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 14 | 100.00% | 1 | 100.00% |
Total | 14 | 100.00% | 1 | 100.00% |
static void __mall_destroy(struct cls_mall_head *head)
{
tcf_exts_destroy(&head->exts);
tcf_exts_put_net(&head->exts);
kfree(head);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 32 | 100.00% | 1 | 100.00% |
Total | 32 | 100.00% | 1 | 100.00% |
static void mall_destroy_work(struct work_struct *work)
{
struct cls_mall_head *head = container_of(work, struct cls_mall_head,
work);
rtnl_lock();
__mall_destroy(head);
rtnl_unlock();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 37 | 100.00% | 2 | 100.00% |
Total | 37 | 100.00% | 2 | 100.00% |
static void mall_destroy_rcu(struct rcu_head *rcu)
{
struct cls_mall_head *head = container_of(rcu, struct cls_mall_head,
rcu);
INIT_WORK(&head->work, mall_destroy_work);
tcf_queue_work(&head->work);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 28 | 63.64% | 1 | 33.33% |
Américo Wang | 8 | 18.18% | 1 | 33.33% |
Yotam Gigi | 8 | 18.18% | 1 | 33.33% |
Total | 44 | 100.00% | 3 | 100.00% |
static void mall_destroy_hw_filter(struct tcf_proto *tp,
struct cls_mall_head *head,
unsigned long cookie)
{
struct tc_cls_matchall_offload cls_mall = {};
struct tcf_block *block = tp->chain->block;
tc_cls_common_offload_init(&cls_mall.common, tp);
cls_mall.command = TC_CLSMATCHALL_DESTROY;
cls_mall.cookie = cookie;
tc_setup_cb_call(block, NULL, TC_SETUP_CLSMATCHALL, &cls_mall, false);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 39 | 53.42% | 3 | 50.00% |
Yotam Gigi | 32 | 43.84% | 2 | 33.33% |
Or Gerlitz | 2 | 2.74% | 1 | 16.67% |
Total | 73 | 100.00% | 6 | 100.00% |
static int mall_replace_hw_filter(struct tcf_proto *tp,
struct cls_mall_head *head,
unsigned long cookie)
{
struct tc_cls_matchall_offload cls_mall = {};
struct tcf_block *block = tp->chain->block;
bool skip_sw = tc_skip_sw(head->flags);
int err;
tc_cls_common_offload_init(&cls_mall.common, tp);
cls_mall.command = TC_CLSMATCHALL_REPLACE;
cls_mall.exts = &head->exts;
cls_mall.cookie = cookie;
err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSMATCHALL,
&cls_mall, skip_sw);
if (err < 0) {
mall_destroy_hw_filter(tp, head, cookie);
return err;
} else if (err > 0) {
head->flags |= TCA_CLS_FLAGS_IN_HW;
}
if (skip_sw && !(head->flags & TCA_CLS_FLAGS_IN_HW))
return -EINVAL;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 119 | 78.29% | 3 | 60.00% |
Yotam Gigi | 33 | 21.71% | 2 | 40.00% |
Total | 152 | 100.00% | 5 | 100.00% |
static void mall_destroy(struct tcf_proto *tp)
{
struct cls_mall_head *head = rtnl_dereference(tp->root);
if (!head)
return;
if (!tc_skip_hw(head->flags))
mall_destroy_hw_filter(tp, head, (unsigned long) head);
if (tcf_exts_get_net(&head->exts))
call_rcu(&head->rcu, mall_destroy_rcu);
else
__mall_destroy(head);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 40 | 51.28% | 2 | 33.33% |
Yotam Gigi | 20 | 25.64% | 2 | 33.33% |
Américo Wang | 18 | 23.08% | 2 | 33.33% |
Total | 78 | 100.00% | 6 | 100.00% |
static void *mall_get(struct tcf_proto *tp, u32 handle)
{
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 15 | 83.33% | 1 | 50.00% |
Américo Wang | 3 | 16.67% | 1 | 50.00% |
Total | 18 | 100.00% | 2 | 100.00% |
static const struct nla_policy mall_policy[TCA_MATCHALL_MAX + 1] = {
[TCA_MATCHALL_UNSPEC] = { .type = NLA_UNSPEC },
[TCA_MATCHALL_CLASSID] = { .type = NLA_U32 },
};
static int mall_set_parms(struct net *net, struct tcf_proto *tp,
struct cls_mall_head *head,
unsigned long base, struct nlattr **tb,
struct nlattr *est, bool ovr)
{
int err;
err = tcf_exts_validate(net, tp, tb, est, &head->exts, ovr);
if (err < 0)
return err;
if (tb[TCA_MATCHALL_CLASSID]) {
head->res.classid = nla_get_u32(tb[TCA_MATCHALL_CLASSID]);
tcf_bind_filter(tp, &head->res, base);
}
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 103 | 94.50% | 2 | 50.00% |
Yotam Gigi | 6 | 5.50% | 2 | 50.00% |
Total | 109 | 100.00% | 4 | 100.00% |
static int mall_change(struct net *net, struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base,
u32 handle, struct nlattr **tca,
void **arg, bool ovr)
{
struct cls_mall_head *head = rtnl_dereference(tp->root);
struct nlattr *tb[TCA_MATCHALL_MAX + 1];
struct cls_mall_head *new;
u32 flags = 0;
int err;
if (!tca[TCA_OPTIONS])
return -EINVAL;
if (head)
return -EEXIST;
err = nla_parse_nested(tb, TCA_MATCHALL_MAX, tca[TCA_OPTIONS],
mall_policy, NULL);
if (err < 0)
return err;
if (tb[TCA_MATCHALL_FLAGS]) {
flags = nla_get_u32(tb[TCA_MATCHALL_FLAGS]);
if (!tc_flags_valid(flags))
return -EINVAL;
}
new = kzalloc(sizeof(*new), GFP_KERNEL);
if (!new)
return -ENOBUFS;
err = tcf_exts_init(&new->exts, TCA_MATCHALL_ACT, 0);
if (err)
goto err_exts_init;
if (!handle)
handle = 1;
new->handle = handle;
new->flags = flags;
err = mall_set_parms(net, tp, new, base, tb, tca[TCA_RATE], ovr);
if (err)
goto err_set_parms;
if (!tc_skip_hw(new->flags)) {
err = mall_replace_hw_filter(tp, new, (unsigned long) new);
if (err)
goto err_replace_hw_filter;
}
if (!tc_in_hw(new->flags))
new->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
*arg = head;
rcu_assign_pointer(tp->root, new);
return 0;
err_replace_hw_filter:
err_set_parms:
tcf_exts_destroy(&new->exts);
err_exts_init:
kfree(new);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 201 | 59.64% | 2 | 22.22% |
Yotam Gigi | 115 | 34.12% | 3 | 33.33% |
Or Gerlitz | 16 | 4.75% | 1 | 11.11% |
Johannes Berg | 2 | 0.59% | 1 | 11.11% |
Américo Wang | 2 | 0.59% | 1 | 11.11% |
David S. Miller | 1 | 0.30% | 1 | 11.11% |
Total | 337 | 100.00% | 9 | 100.00% |
static int mall_delete(struct tcf_proto *tp, void *arg, bool *last)
{
return -EOPNOTSUPP;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 15 | 65.22% | 1 | 25.00% |
Américo Wang | 6 | 26.09% | 2 | 50.00% |
Yotam Gigi | 2 | 8.70% | 1 | 25.00% |
Total | 23 | 100.00% | 4 | 100.00% |
static void mall_walk(struct tcf_proto *tp, struct tcf_walker *arg)
{
struct cls_mall_head *head = rtnl_dereference(tp->root);
if (arg->count < arg->skip)
goto skip;
if (arg->fn(tp, head, arg) < 0)
arg->stop = 1;
skip:
arg->count++;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 68 | 98.55% | 1 | 50.00% |
Yotam Gigi | 1 | 1.45% | 1 | 50.00% |
Total | 69 | 100.00% | 2 | 100.00% |
static int mall_dump(struct net *net, struct tcf_proto *tp, void *fh,
struct sk_buff *skb, struct tcmsg *t)
{
struct cls_mall_head *head = fh;
struct nlattr *nest;
if (!head)
return skb->len;
t->tcm_handle = head->handle;
nest = nla_nest_start(skb, TCA_OPTIONS);
if (!nest)
goto nla_put_failure;
if (head->res.classid &&
nla_put_u32(skb, TCA_MATCHALL_CLASSID, head->res.classid))
goto nla_put_failure;
if (head->flags && nla_put_u32(skb, TCA_MATCHALL_FLAGS, head->flags))
goto nla_put_failure;
if (tcf_exts_dump(skb, &head->exts))
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &head->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 |
Jiri Pirko | 148 | 83.15% | 1 | 25.00% |
Or Gerlitz | 20 | 11.24% | 1 | 25.00% |
Yotam Gigi | 8 | 4.49% | 1 | 25.00% |
Américo Wang | 2 | 1.12% | 1 | 25.00% |
Total | 178 | 100.00% | 4 | 100.00% |
static void mall_bind_class(void *fh, u32 classid, unsigned long cl)
{
struct cls_mall_head *head = fh;
if (head && head->res.classid == classid)
head->res.class = cl;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 44 | 100.00% | 1 | 100.00% |
Total | 44 | 100.00% | 1 | 100.00% |
static struct tcf_proto_ops cls_mall_ops __read_mostly = {
.kind = "matchall",
.classify = mall_classify,
.init = mall_init,
.destroy = mall_destroy,
.get = mall_get,
.change = mall_change,
.delete = mall_delete,
.walk = mall_walk,
.dump = mall_dump,
.bind_class = mall_bind_class,
.owner = THIS_MODULE,
};
static int __init cls_mall_init(void)
{
return register_tcf_proto_ops(&cls_mall_ops);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 16 | 100.00% | 1 | 100.00% |
Total | 16 | 100.00% | 1 | 100.00% |
static void __exit cls_mall_exit(void)
{
unregister_tcf_proto_ops(&cls_mall_ops);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 15 | 100.00% | 1 | 100.00% |
Total | 15 | 100.00% | 1 | 100.00% |
module_init(cls_mall_init);
module_exit(cls_mall_exit);
MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
MODULE_DESCRIPTION("Match-all classifier");
MODULE_LICENSE("GPL v2");
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 1020 | 69.11% | 5 | 27.78% |
Yotam Gigi | 243 | 16.46% | 3 | 16.67% |
Américo Wang | 165 | 11.18% | 5 | 27.78% |
Or Gerlitz | 38 | 2.57% | 2 | 11.11% |
Davide Caratti | 7 | 0.47% | 1 | 5.56% |
Johannes Berg | 2 | 0.14% | 1 | 5.56% |
David S. Miller | 1 | 0.07% | 1 | 5.56% |
Total | 1476 | 100.00% | 18 | 100.00% |
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