* [PATCH 1/4] dsmark: get rid of wrappers
@ 2008-01-20 21:10 Stephen Hemminger
2008-01-20 21:23 ` [PATCH 3/4] dsmark: handle cloned and non-linear skb's Stephen Hemminger
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Stephen Hemminger @ 2008-01-20 21:10 UTC (permalink / raw)
To: David Miller, Patrick McHardy; +Cc: netdev
Remove extraneous macro wrappers for printk and qdisc_priv.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
--- a/net/sched/sch_dsmark.c 2008-01-20 08:36:10.000000000 -0800
+++ b/net/sched/sch_dsmark.c 2008-01-20 08:47:26.000000000 -0800
@@ -15,23 +15,6 @@
#include <net/inet_ecn.h>
#include <asm/byteorder.h>
-
-#if 0 /* control */
-#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
-#else
-#define DPRINTK(format,args...)
-#endif
-
-#if 0 /* data */
-#define D2PRINTK(format,args...) printk(KERN_DEBUG format,##args)
-#else
-#define D2PRINTK(format,args...)
-#endif
-
-
-#define PRIV(sch) ((struct dsmark_qdisc_data *) qdisc_priv(sch))
-
-
/*
* classid class marking
* ------- ----- -------
@@ -81,9 +64,9 @@ static inline int dsmark_valid_index(str
static int dsmark_graft(struct Qdisc *sch, unsigned long arg,
struct Qdisc *new, struct Qdisc **old)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
- DPRINTK("dsmark_graft(sch %p,[qdisc %p],new %p,old %p)\n",
+ pr_debug("dsmark_graft(sch %p,[qdisc %p],new %p,old %p)\n",
sch, p, new, old);
if (new == NULL) {
@@ -104,13 +87,14 @@ static int dsmark_graft(struct Qdisc *sc
static struct Qdisc *dsmark_leaf(struct Qdisc *sch, unsigned long arg)
{
- return PRIV(sch)->q;
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
+ return p->q;
}
static unsigned long dsmark_get(struct Qdisc *sch, u32 classid)
{
- DPRINTK("dsmark_get(sch %p,[qdisc %p],classid %x)\n",
- sch, PRIV(sch), classid);
+ pr_debug("dsmark_get(sch %p,[qdisc %p],classid %x)\n",
+ sch, qdisc_priv(sch), classid);
return TC_H_MIN(classid) + 1;
}
@@ -128,13 +112,13 @@ static void dsmark_put(struct Qdisc *sch
static int dsmark_change(struct Qdisc *sch, u32 classid, u32 parent,
struct rtattr **tca, unsigned long *arg)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
struct rtattr *opt = tca[TCA_OPTIONS-1];
struct rtattr *tb[TCA_DSMARK_MAX];
int err = -EINVAL;
u8 mask = 0;
- DPRINTK("dsmark_change(sch %p,[qdisc %p],classid %x,parent %x),"
+ pr_debug("dsmark_change(sch %p,[qdisc %p],classid %x,parent %x),"
"arg 0x%lx\n", sch, p, classid, parent, *arg);
if (!dsmark_valid_index(p, *arg)) {
@@ -162,7 +146,7 @@ rtattr_failure:
static int dsmark_delete(struct Qdisc *sch, unsigned long arg)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
if (!dsmark_valid_index(p, arg))
return -EINVAL;
@@ -175,10 +159,10 @@ static int dsmark_delete(struct Qdisc *s
static void dsmark_walk(struct Qdisc *sch,struct qdisc_walker *walker)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
int i;
- DPRINTK("dsmark_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker);
+ pr_debug("dsmark_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker);
if (walker->stop)
return;
@@ -197,19 +181,20 @@ ignore:
}
}
-static struct tcf_proto **dsmark_find_tcf(struct Qdisc *sch,unsigned long cl)
+static inline struct tcf_proto **dsmark_find_tcf(struct Qdisc *sch,unsigned long cl)
{
- return &PRIV(sch)->filter_list;
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
+ return &p->filter_list;
}
/* --------------------------- Qdisc operations ---------------------------- */
static int dsmark_enqueue(struct sk_buff *skb,struct Qdisc *sch)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
int err;
- D2PRINTK("dsmark_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
+ pr_debug("dsmark_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
if (p->set_tc_index) {
/* FIXME: Safe with non-linear skbs? --RR */
@@ -234,7 +219,7 @@ static int dsmark_enqueue(struct sk_buff
struct tcf_result res;
int result = tc_classify(skb, p->filter_list, &res);
- D2PRINTK("result %d class 0x%04x\n", result, res.classid);
+ pr_debug("result %d class 0x%04x\n", result, res.classid);
switch (result) {
#ifdef CONFIG_NET_CLS_ACT
@@ -272,11 +257,11 @@ static int dsmark_enqueue(struct sk_buff
static struct sk_buff *dsmark_dequeue(struct Qdisc *sch)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
struct sk_buff *skb;
u32 index;
- D2PRINTK("dsmark_dequeue(sch %p,[qdisc %p])\n", sch, p);
+ pr_debug("dsmark_dequeue(sch %p,[qdisc %p])\n", sch, p);
skb = p->q->ops->dequeue(p->q);
if (skb == NULL)
@@ -285,7 +270,7 @@ static struct sk_buff *dsmark_dequeue(st
sch->q.qlen--;
index = skb->tc_index & (p->indices - 1);
- D2PRINTK("index %d->%d\n", skb->tc_index, index);
+ pr_debug("index %d->%d\n", skb->tc_index, index);
switch (skb->protocol) {
case __constant_htons(ETH_P_IP):
@@ -314,10 +299,10 @@ static struct sk_buff *dsmark_dequeue(st
static int dsmark_requeue(struct sk_buff *skb,struct Qdisc *sch)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
int err;
- D2PRINTK("dsmark_requeue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
+ pr_debug("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) {
@@ -333,10 +318,10 @@ static int dsmark_requeue(struct sk_buff
static unsigned int dsmark_drop(struct Qdisc *sch)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
unsigned int len;
- DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n", sch, p);
+ pr_debug("dsmark_reset(sch %p,[qdisc %p])\n", sch, p);
if (p->q->ops->drop == NULL)
return 0;
@@ -350,14 +335,14 @@ static unsigned int dsmark_drop(struct Q
static int dsmark_init(struct Qdisc *sch, struct rtattr *opt)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
struct rtattr *tb[TCA_DSMARK_MAX];
int err = -EINVAL;
u32 default_index = NO_DEFAULT_INDEX;
u16 indices;
u8 *mask;
- DPRINTK("dsmark_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt);
+ pr_debug("dsmark_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt);
if (!opt || rtattr_parse_nested(tb, TCA_DSMARK_MAX, opt) < 0)
goto errout;
@@ -389,7 +374,7 @@ static int dsmark_init(struct Qdisc *sch
if (p->q == NULL)
p->q = &noop_qdisc;
- DPRINTK("dsmark_init: qdisc %p\n", p->q);
+ pr_debug("dsmark_init: qdisc %p\n", p->q);
err = 0;
errout:
@@ -399,18 +384,18 @@ rtattr_failure:
static void dsmark_reset(struct Qdisc *sch)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
- DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n", sch, p);
+ pr_debug("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 dsmark_qdisc_data *p = qdisc_priv(sch);
- DPRINTK("dsmark_destroy(sch %p,[qdisc %p])\n", sch, p);
+ pr_debug("dsmark_destroy(sch %p,[qdisc %p])\n", sch, p);
tcf_destroy_chain(p->filter_list);
qdisc_destroy(p->q);
@@ -420,10 +405,10 @@ static void dsmark_destroy(struct Qdisc
static int dsmark_dump_class(struct Qdisc *sch, unsigned long cl,
struct sk_buff *skb, struct tcmsg *tcm)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
struct rtattr *opts = NULL;
- DPRINTK("dsmark_dump_class(sch %p,[qdisc %p],class %ld\n", sch, p, cl);
+ pr_debug("dsmark_dump_class(sch %p,[qdisc %p],class %ld\n", sch, p, cl);
if (!dsmark_valid_index(p, cl))
return -EINVAL;
@@ -443,7 +428,7 @@ rtattr_failure:
static int dsmark_dump(struct Qdisc *sch, struct sk_buff *skb)
{
- struct dsmark_qdisc_data *p = PRIV(sch);
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
struct rtattr *opts = NULL;
opts = RTA_NEST(skb, TCA_OPTIONS);
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 3/4] dsmark: handle cloned and non-linear skb's
2008-01-20 21:10 [PATCH 1/4] dsmark: get rid of wrappers Stephen Hemminger
@ 2008-01-20 21:23 ` Stephen Hemminger
2008-01-21 10:23 ` David Miller
2008-01-20 21:25 ` [PATCH 4/4] dsmark: checkpatch warning cleanup Stephen Hemminger
2008-01-21 8:50 ` [PATCH 1/4] dsmark: get rid of wrappers David Miller
2 siblings, 1 reply; 6+ messages in thread
From: Stephen Hemminger @ 2008-01-20 21:23 UTC (permalink / raw)
To: David Miller; +Cc: Patrick McHardy, netdev
Make dsmark work properly with non-linear and cloned skb's
Before modifying the header, it needs to check that skb header is
writeable.
Note: this makes the assumption, that if it queues a good skb
then a good skb will come out of the embedded qdisc.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
--- a/net/sched/sch_dsmark.c 2008-01-20 13:22:54.000000000 -0800
+++ b/net/sched/sch_dsmark.c 2008-01-20 13:23:34.000000000 -0800
@@ -192,13 +192,19 @@ static int dsmark_enqueue(struct sk_buff
pr_debug("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) {
case __constant_htons(ETH_P_IP):
+ if (skb_cow_head(skb, sizeof(struct iphdr)))
+ goto drop;
+
skb->tc_index = ipv4_get_dsfield(ip_hdr(skb))
& ~INET_ECN_MASK;
break;
+
case __constant_htons(ETH_P_IPV6):
+ if (skb_cow_head(skb, sizeof(struct ipv6hdr)))
+ goto drop;
+
skb->tc_index = ipv6_get_dsfield(ipv6_hdr(skb))
& ~INET_ECN_MASK;
break;
@@ -222,14 +228,14 @@ static int dsmark_enqueue(struct sk_buff
case TC_ACT_STOLEN:
kfree_skb(skb);
return NET_XMIT_SUCCESS;
+
case TC_ACT_SHOT:
- kfree_skb(skb);
- sch->qstats.drops++;
- return NET_XMIT_BYPASS;
+ goto drop;
#endif
case TC_ACT_OK:
skb->tc_index = TC_H_MIN(res.classid);
break;
+
default:
if (p->default_index != NO_DEFAULT_INDEX)
skb->tc_index = p->default_index;
@@ -248,6 +254,11 @@ static int dsmark_enqueue(struct sk_buff
sch->q.qlen++;
return NET_XMIT_SUCCESS;
+
+drop:
+ kfree_skb(skb);
+ sch->qstats.drops++;
+ return NET_XMIT_BYPASS;
}
static struct sk_buff *dsmark_dequeue(struct Qdisc *sch)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 4/4] dsmark: checkpatch warning cleanup
2008-01-20 21:10 [PATCH 1/4] dsmark: get rid of wrappers Stephen Hemminger
2008-01-20 21:23 ` [PATCH 3/4] dsmark: handle cloned and non-linear skb's Stephen Hemminger
@ 2008-01-20 21:25 ` Stephen Hemminger
2008-01-21 10:24 ` David Miller
2008-01-21 8:50 ` [PATCH 1/4] dsmark: get rid of wrappers David Miller
2 siblings, 1 reply; 6+ messages in thread
From: Stephen Hemminger @ 2008-01-20 21:25 UTC (permalink / raw)
To: David Miller; +Cc: Patrick McHardy, netdev
Get rid of all style things checkpatch warns about, indentation
and whitespace.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
--- a/net/sched/sch_dsmark.c 2008-01-20 13:23:34.000000000 -0800
+++ b/net/sched/sch_dsmark.c 2008-01-20 13:24:45.000000000 -0800
@@ -152,7 +152,7 @@ static int dsmark_delete(struct Qdisc *s
return 0;
}
-static void dsmark_walk(struct Qdisc *sch,struct qdisc_walker *walker)
+static void dsmark_walk(struct Qdisc *sch, struct qdisc_walker *walker)
{
struct dsmark_qdisc_data *p = qdisc_priv(sch);
int i;
@@ -176,7 +176,8 @@ ignore:
}
}
-static inline struct tcf_proto **dsmark_find_tcf(struct Qdisc *sch,unsigned long cl)
+static inline struct tcf_proto **dsmark_find_tcf(struct Qdisc *sch,
+ unsigned long cl)
{
struct dsmark_qdisc_data *p = qdisc_priv(sch);
return &p->filter_list;
@@ -184,7 +185,7 @@ static inline struct tcf_proto **dsmark_
/* --------------------------- Qdisc operations ---------------------------- */
-static int dsmark_enqueue(struct sk_buff *skb,struct Qdisc *sch)
+static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
struct dsmark_qdisc_data *p = qdisc_priv(sch);
int err;
@@ -193,24 +194,24 @@ static int dsmark_enqueue(struct sk_buff
if (p->set_tc_index) {
switch (skb->protocol) {
- case __constant_htons(ETH_P_IP):
- if (skb_cow_head(skb, sizeof(struct iphdr)))
- goto drop;
+ case __constant_htons(ETH_P_IP):
+ if (skb_cow_head(skb, sizeof(struct iphdr)))
+ goto drop;
- skb->tc_index = ipv4_get_dsfield(ip_hdr(skb))
- & ~INET_ECN_MASK;
- break;
+ skb->tc_index = ipv4_get_dsfield(ip_hdr(skb))
+ & ~INET_ECN_MASK;
+ break;
- case __constant_htons(ETH_P_IPV6):
- if (skb_cow_head(skb, sizeof(struct ipv6hdr)))
- goto drop;
+ case __constant_htons(ETH_P_IPV6):
+ if (skb_cow_head(skb, sizeof(struct ipv6hdr)))
+ goto drop;
- skb->tc_index = ipv6_get_dsfield(ipv6_hdr(skb))
- & ~INET_ECN_MASK;
- break;
- default:
- skb->tc_index = 0;
- break;
+ skb->tc_index = ipv6_get_dsfield(ipv6_hdr(skb))
+ & ~INET_ECN_MASK;
+ break;
+ default:
+ skb->tc_index = 0;
+ break;
}
}
@@ -243,7 +244,7 @@ static int dsmark_enqueue(struct sk_buff
}
}
- err = p->q->enqueue(skb,p->q);
+ err = p->q->enqueue(skb, p->q);
if (err != NET_XMIT_SUCCESS) {
sch->qstats.drops++;
return err;
@@ -279,31 +280,31 @@ static struct sk_buff *dsmark_dequeue(st
pr_debug("index %d->%d\n", skb->tc_index, index);
switch (skb->protocol) {
- case __constant_htons(ETH_P_IP):
- ipv4_change_dsfield(ip_hdr(skb), p->mask[index],
- p->value[index]);
+ case __constant_htons(ETH_P_IP):
+ ipv4_change_dsfield(ip_hdr(skb), p->mask[index],
+ p->value[index]);
break;
- case __constant_htons(ETH_P_IPV6):
- ipv6_change_dsfield(ipv6_hdr(skb), p->mask[index],
- p->value[index]);
- break;
- default:
- /*
- * Only complain if a change was actually attempted.
- * This way, we can send non-IP traffic through dsmark
- * and don't need yet another qdisc as a bypass.
- */
- if (p->mask[index] != 0xff || p->value[index])
- printk(KERN_WARNING "dsmark_dequeue: "
- "unsupported protocol %d\n",
- ntohs(skb->protocol));
+ case __constant_htons(ETH_P_IPV6):
+ ipv6_change_dsfield(ipv6_hdr(skb), p->mask[index],
+ p->value[index]);
break;
+ default:
+ /*
+ * Only complain if a change was actually attempted.
+ * This way, we can send non-IP traffic through dsmark
+ * and don't need yet another qdisc as a bypass.
+ */
+ if (p->mask[index] != 0xff || p->value[index])
+ printk(KERN_WARNING
+ "dsmark_dequeue: unsupported protocol %d\n",
+ ntohs(skb->protocol));
+ break;
}
return skb;
}
-static int dsmark_requeue(struct sk_buff *skb,struct Qdisc *sch)
+static int dsmark_requeue(struct sk_buff *skb, struct Qdisc *sch)
{
struct dsmark_qdisc_data *p = qdisc_priv(sch);
int err;
@@ -423,8 +424,8 @@ static int dsmark_dump_class(struct Qdis
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]);
+ 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);
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/4] dsmark: get rid of wrappers
2008-01-20 21:10 [PATCH 1/4] dsmark: get rid of wrappers Stephen Hemminger
2008-01-20 21:23 ` [PATCH 3/4] dsmark: handle cloned and non-linear skb's Stephen Hemminger
2008-01-20 21:25 ` [PATCH 4/4] dsmark: checkpatch warning cleanup Stephen Hemminger
@ 2008-01-21 8:50 ` David Miller
2 siblings, 0 replies; 6+ messages in thread
From: David Miller @ 2008-01-21 8:50 UTC (permalink / raw)
To: shemminger; +Cc: kaber, netdev
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Sun, 20 Jan 2008 13:10:08 -0800
> Remove extraneous macro wrappers for printk and qdisc_priv.
>
> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
APplied.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 3/4] dsmark: handle cloned and non-linear skb's
2008-01-20 21:23 ` [PATCH 3/4] dsmark: handle cloned and non-linear skb's Stephen Hemminger
@ 2008-01-21 10:23 ` David Miller
0 siblings, 0 replies; 6+ messages in thread
From: David Miller @ 2008-01-21 10:23 UTC (permalink / raw)
To: shemminger; +Cc: kaber, netdev
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Sun, 20 Jan 2008 13:23:54 -0800
> Make dsmark work properly with non-linear and cloned skb's
> Before modifying the header, it needs to check that skb header is
> writeable.
>
> Note: this makes the assumption, that if it queues a good skb
> then a good skb will come out of the embedded qdisc.
>
> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Applied.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 4/4] dsmark: checkpatch warning cleanup
2008-01-20 21:25 ` [PATCH 4/4] dsmark: checkpatch warning cleanup Stephen Hemminger
@ 2008-01-21 10:24 ` David Miller
0 siblings, 0 replies; 6+ messages in thread
From: David Miller @ 2008-01-21 10:24 UTC (permalink / raw)
To: shemminger; +Cc: kaber, netdev
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Sun, 20 Jan 2008 13:25:36 -0800
> Get rid of all style things checkpatch warns about, indentation
> and whitespace.
>
> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Applied, thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2008-01-21 10:24 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2008-01-20 21:10 [PATCH 1/4] dsmark: get rid of wrappers Stephen Hemminger
2008-01-20 21:23 ` [PATCH 3/4] dsmark: handle cloned and non-linear skb's Stephen Hemminger
2008-01-21 10:23 ` David Miller
2008-01-20 21:25 ` [PATCH 4/4] dsmark: checkpatch warning cleanup Stephen Hemminger
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2008-01-21 8:50 ` [PATCH 1/4] dsmark: get rid of wrappers David Miller
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