diff options
Diffstat (limited to 'net/sched/sch_red.c')
| -rw-r--r-- | net/sched/sch_red.c | 65 |
1 files changed, 21 insertions, 44 deletions
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index 76e8df8447d9..0d89dee751a9 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -9,38 +9,19 @@ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> * * Changes: - * J Hadi Salim <hadi@nortel.com> 980914: computation fixes + * J Hadi Salim 980914: computation fixes * Alexey Makarenko <makar@phoenix.kharkov.ua> 990814: qave on idle link was calculated incorrectly. - * J Hadi Salim <hadi@nortelnetworks.com> 980816: ECN support + * J Hadi Salim 980816: ECN support */ #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/inet_ecn.h> -#include <net/dsfield.h> #include <net/red.h> @@ -70,8 +51,7 @@ static inline int red_use_ecn(struct red_sched_data *q) return q->flags & TC_RED_ECN; } -static int -red_enqueue(struct sk_buff *skb, struct Qdisc* sch) +static int red_enqueue(struct sk_buff *skb, struct Qdisc* sch) { struct red_sched_data *q = qdisc_priv(sch); @@ -116,8 +96,7 @@ congestion_drop: return NET_XMIT_CN; } -static int -red_requeue(struct sk_buff *skb, struct Qdisc* sch) +static int red_requeue(struct sk_buff *skb, struct Qdisc* sch) { struct red_sched_data *q = qdisc_priv(sch); @@ -127,8 +106,7 @@ red_requeue(struct sk_buff *skb, struct Qdisc* sch) return qdisc_requeue(skb, sch); } -static struct sk_buff * -red_dequeue(struct Qdisc* sch) +static struct sk_buff * red_dequeue(struct Qdisc* sch) { struct sk_buff *skb; struct red_sched_data *q = qdisc_priv(sch); @@ -171,14 +149,16 @@ static void red_reset(struct Qdisc* sch) static int red_change(struct Qdisc *sch, struct rtattr *opt) { struct red_sched_data *q = qdisc_priv(sch); - struct rtattr *tb[TCA_RED_STAB]; + struct rtattr *tb[TCA_RED_MAX]; struct tc_red_qopt *ctl; - if (opt == NULL || - rtattr_parse_nested(tb, TCA_RED_STAB, opt) || - tb[TCA_RED_PARMS-1] == 0 || tb[TCA_RED_STAB-1] == 0 || + if (opt == NULL || rtattr_parse_nested(tb, TCA_RED_MAX, opt)) + return -EINVAL; + + if (tb[TCA_RED_PARMS-1] == NULL || RTA_PAYLOAD(tb[TCA_RED_PARMS-1]) < sizeof(*ctl) || - RTA_PAYLOAD(tb[TCA_RED_STAB-1]) < 256) + tb[TCA_RED_STAB-1] == NULL || + RTA_PAYLOAD(tb[TCA_RED_STAB-1]) < RED_STAB_SIZE) return -EINVAL; ctl = RTA_DATA(tb[TCA_RED_PARMS-1]); @@ -193,6 +173,7 @@ static int red_change(struct Qdisc *sch, struct rtattr *opt) if (skb_queue_empty(&sch->q)) red_end_of_idle_period(&q->parms); + sch_tree_unlock(sch); return 0; } @@ -205,8 +186,7 @@ static int red_init(struct Qdisc* sch, struct rtattr *opt) static int red_dump(struct Qdisc *sch, struct sk_buff *skb) { struct red_sched_data *q = qdisc_priv(sch); - unsigned char *b = skb->tail; - struct rtattr *rta; + struct rtattr *opts = NULL; struct tc_red_qopt opt = { .limit = q->limit, .flags = q->flags, @@ -217,16 +197,12 @@ static int red_dump(struct Qdisc *sch, struct sk_buff *skb) .Scell_log = q->parms.Scell_log, }; - rta = (struct rtattr*)b; - RTA_PUT(skb, TCA_OPTIONS, 0, NULL); + opts = RTA_NEST(skb, TCA_OPTIONS); RTA_PUT(skb, TCA_RED_PARMS, sizeof(opt), &opt); - rta->rta_len = skb->tail - b; - - return skb->len; + return RTA_NEST_END(skb, opts); rtattr_failure: - skb_trim(skb, b - skb->data); - return -1; + return RTA_NEST_CANCEL(skb, opts); } static int red_dump_stats(struct Qdisc *sch, struct gnet_dump *d) @@ -243,8 +219,6 @@ static int red_dump_stats(struct Qdisc *sch, struct gnet_dump *d) } static struct Qdisc_ops red_qdisc_ops = { - .next = NULL, - .cl_ops = NULL, .id = "red", .priv_size = sizeof(struct red_sched_data), .enqueue = red_enqueue, @@ -263,10 +237,13 @@ static int __init red_module_init(void) { return register_qdisc(&red_qdisc_ops); } -static void __exit red_module_exit(void) + +static void __exit red_module_exit(void) { unregister_qdisc(&red_qdisc_ops); } + module_init(red_module_init) module_exit(red_module_exit) + MODULE_LICENSE("GPL"); |