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Commit 1e4dfaf9 authored by Thomas Graf's avatar Thomas Graf Committed by Thomas Graf
Browse files

[PKT_SCHED]: GRED: Cleanup and remove unnecessary code 



Removes unnecessary includes, initializers, and simplifies
the code a bit.

Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@mandriva.com>
parent 6214e653

include/linux/pkt_sched.h

+22 −26
Original line number Diff line number Diff line
@@ -194,15 +194,11 @@ enum 


#define TCA_GRED_MAX (__TCA_GRED_MAX - 1)



#define TCA_SET_OFF TCA_GRED_PARMS

struct tc_gred_qopt

{

       __u32           limit;          /* HARD maximal queue length (bytes)    

*/

       __u32           qth_min;        /* Min average length threshold (bytes) 

*/

       __u32           qth_max;        /* Max average length threshold (bytes) 

*/

	__u32		limit;        /* HARD maximal queue length (bytes)    */

	__u32		qth_min;      /* Min average length threshold (bytes) */

	__u32		qth_max;      /* Max average length threshold (bytes) */

	__u32		DP;           /* upto 2^32 DPs */

	__u32		backlog;

	__u32		qave;
@@ -210,14 +206,14 @@ struct tc_gred_qopt 
	__u32		early;

	__u32		other;

	__u32		pdrop;



       unsigned char   Wlog;           /* log(W)               */

       unsigned char   Plog;           /* log(P_max/(qth_max-qth_min)) */

       unsigned char   Scell_log;      /* cell size for idle damping */

	__u8		Wlog;         /* log(W)               */

	__u8		Plog;         /* log(P_max/(qth_max-qth_min)) */

	__u8		Scell_log;    /* cell size for idle damping */

	__u8		prio;         /* prio of this VQ */

	__u32		packets;

	__u32		bytesin;

};



/* gred setup */

struct tc_gred_sopt

{

net/sched/sch_gred.c

+31 −69
Original line number Diff line number Diff line
@@ -15,50 +15,18 @@ 
 *		         from Ren Liu

 *		       - More error checks

 *

 *

 *

 *  For all the glorious comments look at Alexey's sch_red.c

 *  For all the glorious comments look at include/net/red.h

 */



#include <linux/config.h>

#include <linux/module.h>

#include <asm/uaccess.h>

#include <asm/system.h>

#include <linux/bitops.h>

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/string.h>

#include <linux/mm.h>

#include <linux/socket.h>

#include <linux/sockios.h>

#include <linux/in.h>

#include <linux/errno.h>

#include <linux/interrupt.h>

#include <linux/if_ether.h>

#include <linux/inet.h>

#include <linux/netdevice.h>

#include <linux/etherdevice.h>

#include <linux/notifier.h>

#include <net/ip.h>

#include <net/route.h>

#include <linux/skbuff.h>

#include <net/sock.h>

#include <net/pkt_sched.h>

#include <net/red.h>



#if 1 /* 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 GRED_DEF_PRIO (MAX_DPs / 2)

#define GRED_VQ_MASK (MAX_DPs - 1)
@@ -172,13 +140,11 @@ static inline void gred_store_wred_set(struct gred_sched *table, 
	table->wred_set.qavg = q->parms.qavg;

}



static int

gred_enqueue(struct sk_buff *skb, struct Qdisc* sch)

static int gred_enqueue(struct sk_buff *skb, struct Qdisc* sch)

{

	struct gred_sched_data *q=NULL;

	struct gred_sched *t= qdisc_priv(sch);

	unsigned long qavg = 0;

	int i=0;

	u16 dp = tc_index_to_dp(skb);



	if (dp >= t->DPs  || (q = t->tab[dp]) == NULL) {
@@ -202,11 +168,10 @@ gred_enqueue(struct sk_buff *skb, struct Qdisc* sch) 


	/* sum up all the qaves of prios <= to ours to get the new qave */

	if (!gred_wred_mode(t) && gred_rio_mode(t)) {

		for (i=0;i<t->DPs;i++) {

			if ((!t->tab[i]) || (i==q->DP))	

				continue; 

		int i;



			if (t->tab[i]->prio < q->prio &&

		for (i = 0; i < t->DPs; i++) {

			if (t->tab[i] && t->tab[i]->prio < q->prio &&

			    !red_is_idling(&t->tab[i]->parms))

				qavg +=t->tab[i]->parms.qavg;

		}
@@ -216,10 +181,8 @@ gred_enqueue(struct sk_buff *skb, struct Qdisc* sch) 
	q->packetsin++;

	q->bytesin += skb->len;



	if (gred_wred_mode(t)) {

		qavg = 0;

	if (gred_wred_mode(t))

		gred_load_wred_set(t, q);

	}



	q->parms.qavg = red_calc_qavg(&q->parms, gred_backlog(t, q, sch));
@@ -258,8 +221,7 @@ congestion_drop: 
	return NET_XMIT_CN;

}



static int

gred_requeue(struct sk_buff *skb, struct Qdisc* sch)

static int gred_requeue(struct sk_buff *skb, struct Qdisc* sch)

{

	struct gred_sched *t = qdisc_priv(sch);

	struct gred_sched_data *q;
@@ -279,16 +241,15 @@ gred_requeue(struct sk_buff *skb, struct Qdisc* sch) 
	return qdisc_requeue(skb, sch);

}



static struct sk_buff *

gred_dequeue(struct Qdisc* sch)

static struct sk_buff *gred_dequeue(struct Qdisc* sch)

{

	struct sk_buff *skb;

	struct gred_sched_data *q;

	struct gred_sched *t = qdisc_priv(sch);



	skb = qdisc_dequeue_head(sch);



	if (skb) {

		struct gred_sched_data *q;

		u16 dp = tc_index_to_dp(skb);



		if (dp >= t->DPs || (q = t->tab[dp]) == NULL) {
@@ -315,13 +276,12 @@ gred_dequeue(struct Qdisc* sch) 
static unsigned int gred_drop(struct Qdisc* sch)

{

	struct sk_buff *skb;



	struct gred_sched_data *q;

	struct gred_sched *t = qdisc_priv(sch);



	skb = qdisc_dequeue_tail(sch);

	if (skb) {

		unsigned int len = skb->len;

		struct gred_sched_data *q;

		u16 dp = tc_index_to_dp(skb);



		if (dp >= t->DPs || (q = t->tab[dp]) == NULL) {
@@ -351,15 +311,16 @@ static unsigned int gred_drop(struct Qdisc* sch) 
static void gred_reset(struct Qdisc* sch)

{

	int i;

	struct gred_sched_data *q;

	struct gred_sched *t = qdisc_priv(sch);



	qdisc_reset_queue(sch);



        for (i = 0; i < t->DPs; i++) {

	        q= t->tab[i];

		struct gred_sched_data *q = t->tab[i];



		if (!q)

			continue;



		red_restart(&q->parms);

		q->backlog = 0;

	}
@@ -597,8 +558,6 @@ static void gred_destroy(struct Qdisc *sch) 
}



static struct Qdisc_ops gred_qdisc_ops = {

	.next		=	NULL,

	.cl_ops		=	NULL,

	.id		=	"gred",

	.priv_size	=	sizeof(struct gred_sched),

	.enqueue	=	gred_enqueue,
@@ -617,10 +576,13 @@ static int __init gred_module_init(void) 
{

	return register_qdisc(&gred_qdisc_ops);

}



static void __exit gred_module_exit(void)

{

	unregister_qdisc(&gred_qdisc_ops);

}



module_init(gred_module_init)

module_exit(gred_module_exit)



MODULE_LICENSE("GPL");