mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 13:51:44 +00:00
[PKT_SCHED]: Logic simplifications and codingstyle/whitespace cleanups
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf
David S. Miller
parent
02f23f095f
commit
af0d114176
@ -31,7 +31,7 @@
|
||||
#endif
|
||||
|
||||
|
||||
#define PRIV(sch) qdisc_priv(sch)
|
||||
#define PRIV(sch) ((struct dsmark_qdisc_data *) qdisc_priv(sch))
|
||||
|
||||
|
||||
/*
|
||||
@ -55,10 +55,10 @@
|
||||
struct dsmark_qdisc_data {
|
||||
struct Qdisc *q;
|
||||
struct tcf_proto *filter_list;
|
||||
__u8 *mask; /* "owns" the array */
|
||||
__u8 *value;
|
||||
__u16 indices;
|
||||
__u32 default_index; /* index range is 0...0xffff */
|
||||
u8 *mask; /* "owns" the array */
|
||||
u8 *value;
|
||||
u16 indices;
|
||||
u32 default_index; /* index range is 0...0xffff */
|
||||
int set_tc_index;
|
||||
};
|
||||
|
||||
@ -80,14 +80,13 @@ static inline int dsmark_valid_index(struct dsmark_qdisc_data *p, u16 index)
|
||||
|
||||
/* ------------------------- Class/flow operations ------------------------- */
|
||||
|
||||
|
||||
static int dsmark_graft(struct Qdisc *sch,unsigned long arg,
|
||||
struct Qdisc *new,struct Qdisc **old)
|
||||
static int dsmark_graft(struct Qdisc *sch, unsigned long arg,
|
||||
struct Qdisc *new, struct Qdisc **old)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
|
||||
DPRINTK("dsmark_graft(sch %p,[qdisc %p],new %p,old %p)\n",sch,p,new,
|
||||
old);
|
||||
DPRINTK("dsmark_graft(sch %p,[qdisc %p],new %p,old %p)\n",
|
||||
sch, p, new, old);
|
||||
|
||||
if (new == NULL) {
|
||||
new = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops);
|
||||
@ -96,44 +95,37 @@ static int dsmark_graft(struct Qdisc *sch,unsigned long arg,
|
||||
}
|
||||
|
||||
sch_tree_lock(sch);
|
||||
*old = xchg(&p->q,new);
|
||||
if (*old)
|
||||
qdisc_reset(*old);
|
||||
*old = xchg(&p->q, new);
|
||||
qdisc_reset(*old);
|
||||
sch->q.qlen = 0;
|
||||
sch_tree_unlock(sch); /* @@@ move up ? */
|
||||
sch_tree_unlock(sch);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static struct Qdisc *dsmark_leaf(struct Qdisc *sch, unsigned long arg)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
|
||||
return p->q;
|
||||
return PRIV(sch)->q;
|
||||
}
|
||||
|
||||
|
||||
static unsigned long dsmark_get(struct Qdisc *sch,u32 classid)
|
||||
static unsigned long dsmark_get(struct Qdisc *sch, u32 classid)
|
||||
{
|
||||
struct dsmark_qdisc_data *p __attribute__((unused)) = PRIV(sch);
|
||||
DPRINTK("dsmark_get(sch %p,[qdisc %p],classid %x)\n",
|
||||
sch, PRIV(sch), classid);
|
||||
|
||||
DPRINTK("dsmark_get(sch %p,[qdisc %p],classid %x)\n",sch,p,classid);
|
||||
return TC_H_MIN(classid)+1;
|
||||
return TC_H_MIN(classid) + 1;
|
||||
}
|
||||
|
||||
|
||||
static unsigned long dsmark_bind_filter(struct Qdisc *sch,
|
||||
unsigned long parent, u32 classid)
|
||||
unsigned long parent, u32 classid)
|
||||
{
|
||||
return dsmark_get(sch,classid);
|
||||
return dsmark_get(sch, classid);
|
||||
}
|
||||
|
||||
|
||||
static void dsmark_put(struct Qdisc *sch, unsigned long cl)
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
static int dsmark_change(struct Qdisc *sch, u32 classid, u32 parent,
|
||||
struct rtattr **tca, unsigned long *arg)
|
||||
{
|
||||
@ -169,26 +161,29 @@ rtattr_failure:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int dsmark_delete(struct Qdisc *sch,unsigned long arg)
|
||||
static int dsmark_delete(struct Qdisc *sch, unsigned long arg)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
|
||||
if (!arg || arg > p->indices)
|
||||
if (!dsmark_valid_index(p, arg))
|
||||
return -EINVAL;
|
||||
|
||||
p->mask[arg-1] = 0xff;
|
||||
p->value[arg-1] = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static void dsmark_walk(struct Qdisc *sch,struct qdisc_walker *walker)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
int i;
|
||||
|
||||
DPRINTK("dsmark_walk(sch %p,[qdisc %p],walker %p)\n",sch,p,walker);
|
||||
DPRINTK("dsmark_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker);
|
||||
|
||||
if (walker->stop)
|
||||
return;
|
||||
|
||||
for (i = 0; i < p->indices; i++) {
|
||||
if (p->mask[i] == 0xff && !p->value[i])
|
||||
goto ignore;
|
||||
@ -203,26 +198,20 @@ ignore:
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static struct tcf_proto **dsmark_find_tcf(struct Qdisc *sch,unsigned long cl)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
|
||||
return &p->filter_list;
|
||||
return &PRIV(sch)->filter_list;
|
||||
}
|
||||
|
||||
|
||||
/* --------------------------- Qdisc operations ---------------------------- */
|
||||
|
||||
|
||||
static int dsmark_enqueue(struct sk_buff *skb,struct Qdisc *sch)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
struct tcf_result res;
|
||||
int result;
|
||||
int ret = NET_XMIT_POLICED;
|
||||
int err;
|
||||
|
||||
D2PRINTK("dsmark_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
|
||||
|
||||
D2PRINTK("dsmark_enqueue(skb %p,sch %p,[qdisc %p])\n",skb,sch,p);
|
||||
if (p->set_tc_index) {
|
||||
/* FIXME: Safe with non-linear skbs? --RR */
|
||||
switch (skb->protocol) {
|
||||
@ -239,17 +228,21 @@ static int dsmark_enqueue(struct sk_buff *skb,struct Qdisc *sch)
|
||||
break;
|
||||
};
|
||||
}
|
||||
result = TC_POLICE_OK; /* be nice to gcc */
|
||||
if (TC_H_MAJ(skb->priority) == sch->handle) {
|
||||
|
||||
if (TC_H_MAJ(skb->priority) == sch->handle)
|
||||
skb->tc_index = TC_H_MIN(skb->priority);
|
||||
} else {
|
||||
result = tc_classify(skb,p->filter_list,&res);
|
||||
D2PRINTK("result %d class 0x%04x\n",result,res.classid);
|
||||
else {
|
||||
struct tcf_result res;
|
||||
int result = tc_classify(skb, p->filter_list, &res);
|
||||
|
||||
D2PRINTK("result %d class 0x%04x\n", result, res.classid);
|
||||
|
||||
switch (result) {
|
||||
#ifdef CONFIG_NET_CLS_POLICE
|
||||
case TC_POLICE_SHOT:
|
||||
kfree_skb(skb);
|
||||
break;
|
||||
sch->qstats.drops++;
|
||||
return NET_XMIT_POLICED;
|
||||
#if 0
|
||||
case TC_POLICE_RECLASSIFY:
|
||||
/* FIXME: what to do here ??? */
|
||||
@ -266,43 +259,45 @@ static int dsmark_enqueue(struct sk_buff *skb,struct Qdisc *sch)
|
||||
break;
|
||||
};
|
||||
}
|
||||
if (
|
||||
#ifdef CONFIG_NET_CLS_POLICE
|
||||
result == TC_POLICE_SHOT ||
|
||||
#endif
|
||||
|
||||
((ret = p->q->enqueue(skb,p->q)) != 0)) {
|
||||
err = p->q->enqueue(skb,p->q);
|
||||
if (err != NET_XMIT_SUCCESS) {
|
||||
sch->qstats.drops++;
|
||||
return ret;
|
||||
return err;
|
||||
}
|
||||
|
||||
sch->bstats.bytes += skb->len;
|
||||
sch->bstats.packets++;
|
||||
sch->q.qlen++;
|
||||
return ret;
|
||||
}
|
||||
|
||||
return NET_XMIT_SUCCESS;
|
||||
}
|
||||
|
||||
static struct sk_buff *dsmark_dequeue(struct Qdisc *sch)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
struct sk_buff *skb;
|
||||
int index;
|
||||
u32 index;
|
||||
|
||||
D2PRINTK("dsmark_dequeue(sch %p,[qdisc %p])\n", sch, p);
|
||||
|
||||
D2PRINTK("dsmark_dequeue(sch %p,[qdisc %p])\n",sch,p);
|
||||
skb = p->q->ops->dequeue(p->q);
|
||||
if (!skb)
|
||||
if (skb == NULL)
|
||||
return NULL;
|
||||
|
||||
sch->q.qlen--;
|
||||
index = skb->tc_index & (p->indices-1);
|
||||
D2PRINTK("index %d->%d\n",skb->tc_index,index);
|
||||
|
||||
index = skb->tc_index & (p->indices - 1);
|
||||
D2PRINTK("index %d->%d\n", skb->tc_index, index);
|
||||
|
||||
switch (skb->protocol) {
|
||||
case __constant_htons(ETH_P_IP):
|
||||
ipv4_change_dsfield(skb->nh.iph,
|
||||
p->mask[index],p->value[index]);
|
||||
ipv4_change_dsfield(skb->nh.iph, p->mask[index],
|
||||
p->value[index]);
|
||||
break;
|
||||
case __constant_htons(ETH_P_IPV6):
|
||||
ipv6_change_dsfield(skb->nh.ipv6h,
|
||||
p->mask[index],p->value[index]);
|
||||
ipv6_change_dsfield(skb->nh.ipv6h, p->mask[index],
|
||||
p->value[index]);
|
||||
break;
|
||||
default:
|
||||
/*
|
||||
@ -316,41 +311,46 @@ static struct sk_buff *dsmark_dequeue(struct Qdisc *sch)
|
||||
htons(skb->protocol));
|
||||
break;
|
||||
};
|
||||
|
||||
return skb;
|
||||
}
|
||||
|
||||
|
||||
static int dsmark_requeue(struct sk_buff *skb,struct Qdisc *sch)
|
||||
{
|
||||
int ret;
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
int err;
|
||||
|
||||
D2PRINTK("dsmark_requeue(skb %p,sch %p,[qdisc %p])\n",skb,sch,p);
|
||||
if ((ret = p->q->ops->requeue(skb, p->q)) == 0) {
|
||||
sch->q.qlen++;
|
||||
sch->qstats.requeues++;
|
||||
return 0;
|
||||
D2PRINTK("dsmark_requeue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
|
||||
|
||||
err = p->q->ops->requeue(skb, p->q);
|
||||
if (err != NET_XMIT_SUCCESS) {
|
||||
sch->qstats.drops++;
|
||||
return err;
|
||||
}
|
||||
sch->qstats.drops++;
|
||||
return ret;
|
||||
}
|
||||
|
||||
sch->q.qlen++;
|
||||
sch->qstats.requeues++;
|
||||
|
||||
return NET_XMIT_SUCCESS;
|
||||
}
|
||||
|
||||
static unsigned int dsmark_drop(struct Qdisc *sch)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
unsigned int len;
|
||||
|
||||
DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n",sch,p);
|
||||
if (!p->q->ops->drop)
|
||||
DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n", sch, p);
|
||||
|
||||
if (p->q->ops->drop == NULL)
|
||||
return 0;
|
||||
if (!(len = p->q->ops->drop(p->q)))
|
||||
return 0;
|
||||
sch->q.qlen--;
|
||||
|
||||
len = p->q->ops->drop(p->q);
|
||||
if (len)
|
||||
sch->q.qlen--;
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
static int dsmark_init(struct Qdisc *sch, struct rtattr *opt)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
@ -400,33 +400,32 @@ rtattr_failure:
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
static void dsmark_reset(struct Qdisc *sch)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
|
||||
DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n",sch,p);
|
||||
DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n", sch, p);
|
||||
qdisc_reset(p->q);
|
||||
sch->q.qlen = 0;
|
||||
}
|
||||
|
||||
|
||||
static void dsmark_destroy(struct Qdisc *sch)
|
||||
{
|
||||
struct dsmark_qdisc_data *p = PRIV(sch);
|
||||
struct tcf_proto *tp;
|
||||
|
||||
DPRINTK("dsmark_destroy(sch %p,[qdisc %p])\n",sch,p);
|
||||
DPRINTK("dsmark_destroy(sch %p,[qdisc %p])\n", sch, p);
|
||||
|
||||
while (p->filter_list) {
|
||||
tp = p->filter_list;
|
||||
p->filter_list = tp->next;
|
||||
tcf_destroy(tp);
|
||||
}
|
||||
|
||||
qdisc_destroy(p->q);
|
||||
kfree(p->mask);
|
||||
}
|
||||
|
||||
|
||||
static int dsmark_dump_class(struct Qdisc *sch, unsigned long cl,
|
||||
struct sk_buff *skb, struct tcmsg *tcm)
|
||||
{
|
||||
@ -505,10 +504,13 @@ static int __init dsmark_module_init(void)
|
||||
{
|
||||
return register_qdisc(&dsmark_qdisc_ops);
|
||||
}
|
||||
|
||||
static void __exit dsmark_module_exit(void)
|
||||
{
|
||||
unregister_qdisc(&dsmark_qdisc_ops);
|
||||
}
|
||||
|
||||
module_init(dsmark_module_init)
|
||||
module_exit(dsmark_module_exit)
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
Loading…
Reference in New Issue
Block a user