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cd354f1ae7
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
223 lines
5.5 KiB
C
223 lines
5.5 KiB
C
/*
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* net/sched/gact.c Generic actions
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* copyright Jamal Hadi Salim (2002-4)
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*
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*/
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#include <linux/bitops.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/socket.h>
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#include <linux/sockios.h>
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#include <linux/in.h>
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/rtnetlink.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/proc_fs.h>
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#include <net/sock.h>
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#include <net/pkt_sched.h>
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#include <linux/tc_act/tc_gact.h>
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#include <net/tc_act/tc_gact.h>
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#define GACT_TAB_MASK 15
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static struct tcf_common *tcf_gact_ht[GACT_TAB_MASK + 1];
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static u32 gact_idx_gen;
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static DEFINE_RWLOCK(gact_lock);
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static struct tcf_hashinfo gact_hash_info = {
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.htab = tcf_gact_ht,
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.hmask = GACT_TAB_MASK,
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.lock = &gact_lock,
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};
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#ifdef CONFIG_GACT_PROB
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static int gact_net_rand(struct tcf_gact *gact)
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{
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if (!gact->tcfg_pval || net_random() % gact->tcfg_pval)
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return gact->tcf_action;
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return gact->tcfg_paction;
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}
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static int gact_determ(struct tcf_gact *gact)
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{
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if (!gact->tcfg_pval || gact->tcf_bstats.packets % gact->tcfg_pval)
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return gact->tcf_action;
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return gact->tcfg_paction;
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}
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typedef int (*g_rand)(struct tcf_gact *gact);
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static g_rand gact_rand[MAX_RAND]= { NULL, gact_net_rand, gact_determ };
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#endif /* CONFIG_GACT_PROB */
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static int tcf_gact_init(struct rtattr *rta, struct rtattr *est,
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struct tc_action *a, int ovr, int bind)
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{
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struct rtattr *tb[TCA_GACT_MAX];
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struct tc_gact *parm;
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struct tcf_gact *gact;
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struct tcf_common *pc;
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int ret = 0;
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if (rta == NULL || rtattr_parse_nested(tb, TCA_GACT_MAX, rta) < 0)
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return -EINVAL;
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if (tb[TCA_GACT_PARMS - 1] == NULL ||
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RTA_PAYLOAD(tb[TCA_GACT_PARMS - 1]) < sizeof(*parm))
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return -EINVAL;
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parm = RTA_DATA(tb[TCA_GACT_PARMS - 1]);
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if (tb[TCA_GACT_PROB-1] != NULL)
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#ifdef CONFIG_GACT_PROB
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if (RTA_PAYLOAD(tb[TCA_GACT_PROB-1]) < sizeof(struct tc_gact_p))
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return -EINVAL;
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#else
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return -EOPNOTSUPP;
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#endif
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pc = tcf_hash_check(parm->index, a, bind, &gact_hash_info);
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if (!pc) {
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pc = tcf_hash_create(parm->index, est, a, sizeof(*gact),
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bind, &gact_idx_gen, &gact_hash_info);
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if (unlikely(!pc))
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return -ENOMEM;
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ret = ACT_P_CREATED;
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} else {
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if (!ovr) {
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tcf_hash_release(pc, bind, &gact_hash_info);
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return -EEXIST;
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}
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}
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gact = to_gact(pc);
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spin_lock_bh(&gact->tcf_lock);
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gact->tcf_action = parm->action;
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#ifdef CONFIG_GACT_PROB
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if (tb[TCA_GACT_PROB-1] != NULL) {
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struct tc_gact_p *p_parm = RTA_DATA(tb[TCA_GACT_PROB-1]);
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gact->tcfg_paction = p_parm->paction;
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gact->tcfg_pval = p_parm->pval;
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gact->tcfg_ptype = p_parm->ptype;
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}
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#endif
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spin_unlock_bh(&gact->tcf_lock);
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if (ret == ACT_P_CREATED)
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tcf_hash_insert(pc, &gact_hash_info);
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return ret;
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}
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static int tcf_gact_cleanup(struct tc_action *a, int bind)
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{
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struct tcf_gact *gact = a->priv;
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if (gact)
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return tcf_hash_release(&gact->common, bind, &gact_hash_info);
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return 0;
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}
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static int tcf_gact(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
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{
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struct tcf_gact *gact = a->priv;
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int action = TC_ACT_SHOT;
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spin_lock(&gact->tcf_lock);
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#ifdef CONFIG_GACT_PROB
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if (gact->tcfg_ptype && gact_rand[gact->tcfg_ptype] != NULL)
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action = gact_rand[gact->tcfg_ptype](gact);
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else
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action = gact->tcf_action;
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#else
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action = gact->tcf_action;
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#endif
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gact->tcf_bstats.bytes += skb->len;
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gact->tcf_bstats.packets++;
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if (action == TC_ACT_SHOT)
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gact->tcf_qstats.drops++;
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gact->tcf_tm.lastuse = jiffies;
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spin_unlock(&gact->tcf_lock);
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return action;
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}
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static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
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{
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unsigned char *b = skb->tail;
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struct tc_gact opt;
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struct tcf_gact *gact = a->priv;
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struct tcf_t t;
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opt.index = gact->tcf_index;
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opt.refcnt = gact->tcf_refcnt - ref;
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opt.bindcnt = gact->tcf_bindcnt - bind;
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opt.action = gact->tcf_action;
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RTA_PUT(skb, TCA_GACT_PARMS, sizeof(opt), &opt);
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#ifdef CONFIG_GACT_PROB
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if (gact->tcfg_ptype) {
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struct tc_gact_p p_opt;
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p_opt.paction = gact->tcfg_paction;
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p_opt.pval = gact->tcfg_pval;
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p_opt.ptype = gact->tcfg_ptype;
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RTA_PUT(skb, TCA_GACT_PROB, sizeof(p_opt), &p_opt);
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}
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#endif
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t.install = jiffies_to_clock_t(jiffies - gact->tcf_tm.install);
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t.lastuse = jiffies_to_clock_t(jiffies - gact->tcf_tm.lastuse);
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t.expires = jiffies_to_clock_t(gact->tcf_tm.expires);
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RTA_PUT(skb, TCA_GACT_TM, sizeof(t), &t);
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return skb->len;
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rtattr_failure:
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skb_trim(skb, b - skb->data);
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return -1;
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}
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static struct tc_action_ops act_gact_ops = {
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.kind = "gact",
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.hinfo = &gact_hash_info,
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.type = TCA_ACT_GACT,
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.capab = TCA_CAP_NONE,
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.owner = THIS_MODULE,
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.act = tcf_gact,
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.dump = tcf_gact_dump,
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.cleanup = tcf_gact_cleanup,
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.lookup = tcf_hash_search,
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.init = tcf_gact_init,
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.walk = tcf_generic_walker
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};
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MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");
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MODULE_DESCRIPTION("Generic Classifier actions");
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MODULE_LICENSE("GPL");
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static int __init gact_init_module(void)
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{
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#ifdef CONFIG_GACT_PROB
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printk("GACT probability on\n");
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#else
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printk("GACT probability NOT on\n");
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#endif
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return tcf_register_action(&act_gact_ops);
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}
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static void __exit gact_cleanup_module(void)
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{
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tcf_unregister_action(&act_gact_ops);
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}
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module_init(gact_init_module);
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module_exit(gact_cleanup_module);
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