/* Written 1998-2000 by Werner Almesberger, EPFL ICA */
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#endif
-#define PRIV(sch) qdisc_priv(sch)
+#define PRIV(sch) ((struct dsmark_qdisc_data *) qdisc_priv(sch))
/*
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;
};
/* ------------------------- 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);
}
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)
{
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;
}
}
-
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) {
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 ??? */
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:
/*
if (p->mask[index] != 0xff || p->value[index])
printk(KERN_WARNING "dsmark_dequeue: "
"unsupported protocol %d\n",
- htons(skb->protocol));
+ ntohs(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)
- return 0;
- if (!(len = p->q->ops->drop(p->q)))
+ DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n", sch, p);
+
+ if (p->q->ops->drop == NULL)
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);
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)
+ struct sk_buff *skb, struct tcmsg *tcm)
{
struct dsmark_qdisc_data *p = PRIV(sch);
- unsigned char *b = skb->tail;
- struct rtattr *rta;
+ struct rtattr *opts = NULL;
+
+ DPRINTK("dsmark_dump_class(sch %p,[qdisc %p],class %ld\n", sch, p, cl);
- DPRINTK("dsmark_dump_class(sch %p,[qdisc %p],class %ld\n",sch,p,cl);
- if (!cl || cl > p->indices)
+ if (!dsmark_valid_index(p, cl))
return -EINVAL;
- tcm->tcm_handle = TC_H_MAKE(TC_H_MAJ(sch->handle),cl-1);
- rta = (struct rtattr *) b;
- RTA_PUT(skb,TCA_OPTIONS,0,NULL);
- RTA_PUT(skb,TCA_DSMARK_MASK,1,&p->mask[cl-1]);
- RTA_PUT(skb,TCA_DSMARK_VALUE,1,&p->value[cl-1]);
- rta->rta_len = skb->tail-b;
- return skb->len;
+
+ tcm->tcm_handle = TC_H_MAKE(TC_H_MAJ(sch->handle), cl-1);
+ tcm->tcm_info = p->q->handle;
+
+ opts = RTA_NEST(skb, TCA_OPTIONS);
+ RTA_PUT_U8(skb,TCA_DSMARK_MASK, p->mask[cl-1]);
+ RTA_PUT_U8(skb,TCA_DSMARK_VALUE, p->value[cl-1]);
+
+ return RTA_NEST_END(skb, opts);
rtattr_failure:
- skb_trim(skb,b-skb->data);
- return -1;
+ return RTA_NEST_CANCEL(skb, opts);
}
static int dsmark_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct dsmark_qdisc_data *p = PRIV(sch);
- unsigned char *b = skb->tail;
- struct rtattr *rta;
+ struct rtattr *opts = NULL;
- rta = (struct rtattr *) b;
- RTA_PUT(skb,TCA_OPTIONS,0,NULL);
- RTA_PUT(skb,TCA_DSMARK_INDICES,sizeof(__u16),&p->indices);
- if (p->default_index != NO_DEFAULT_INDEX) {
- __u16 tmp = p->default_index;
+ opts = RTA_NEST(skb, TCA_OPTIONS);
+ RTA_PUT_U16(skb, TCA_DSMARK_INDICES, p->indices);
+
+ if (p->default_index != NO_DEFAULT_INDEX)
+ RTA_PUT_U16(skb, TCA_DSMARK_DEFAULT_INDEX, p->default_index);
- RTA_PUT(skb,TCA_DSMARK_DEFAULT_INDEX, sizeof(__u16), &tmp);
- }
if (p->set_tc_index)
- RTA_PUT(skb, TCA_DSMARK_SET_TC_INDEX, 0, NULL);
- rta->rta_len = skb->tail-b;
- return skb->len;
+ RTA_PUT_FLAG(skb, TCA_DSMARK_SET_TC_INDEX);
+
+ return RTA_NEST_END(skb, opts);
rtattr_failure:
- skb_trim(skb,b-skb->data);
- return -1;
+ return RTA_NEST_CANCEL(skb, opts);
}
static struct Qdisc_class_ops dsmark_class_ops = {
{
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");