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>
302 lines
6.3 KiB
C
302 lines
6.3 KiB
C
/*
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* net/sched/cls_basic.c Basic Packet Classifier.
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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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* Authors: Thomas Graf <tgraf@suug.ch>
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*/
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#include <linux/module.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/errno.h>
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#include <linux/rtnetlink.h>
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#include <linux/skbuff.h>
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#include <net/act_api.h>
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#include <net/pkt_cls.h>
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struct basic_head
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{
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u32 hgenerator;
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struct list_head flist;
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};
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struct basic_filter
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{
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u32 handle;
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struct tcf_exts exts;
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struct tcf_ematch_tree ematches;
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struct tcf_result res;
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struct list_head link;
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};
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static struct tcf_ext_map basic_ext_map = {
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.action = TCA_BASIC_ACT,
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.police = TCA_BASIC_POLICE
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};
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static int basic_classify(struct sk_buff *skb, struct tcf_proto *tp,
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struct tcf_result *res)
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{
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int r;
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struct basic_head *head = (struct basic_head *) tp->root;
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struct basic_filter *f;
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list_for_each_entry(f, &head->flist, link) {
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if (!tcf_em_tree_match(skb, &f->ematches, NULL))
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continue;
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*res = f->res;
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r = tcf_exts_exec(skb, &f->exts, res);
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if (r < 0)
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continue;
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return r;
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}
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return -1;
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}
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static unsigned long basic_get(struct tcf_proto *tp, u32 handle)
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{
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unsigned long l = 0UL;
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struct basic_head *head = (struct basic_head *) tp->root;
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struct basic_filter *f;
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if (head == NULL)
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return 0UL;
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list_for_each_entry(f, &head->flist, link)
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if (f->handle == handle)
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l = (unsigned long) f;
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return l;
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}
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static void basic_put(struct tcf_proto *tp, unsigned long f)
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{
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}
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static int basic_init(struct tcf_proto *tp)
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{
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return 0;
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}
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static inline void basic_delete_filter(struct tcf_proto *tp,
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struct basic_filter *f)
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{
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tcf_unbind_filter(tp, &f->res);
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tcf_exts_destroy(tp, &f->exts);
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tcf_em_tree_destroy(tp, &f->ematches);
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kfree(f);
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}
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static void basic_destroy(struct tcf_proto *tp)
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{
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struct basic_head *head = (struct basic_head *) xchg(&tp->root, NULL);
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struct basic_filter *f, *n;
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list_for_each_entry_safe(f, n, &head->flist, link) {
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list_del(&f->link);
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basic_delete_filter(tp, f);
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}
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}
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static int basic_delete(struct tcf_proto *tp, unsigned long arg)
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{
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struct basic_head *head = (struct basic_head *) tp->root;
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struct basic_filter *t, *f = (struct basic_filter *) arg;
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list_for_each_entry(t, &head->flist, link)
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if (t == f) {
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tcf_tree_lock(tp);
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list_del(&t->link);
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tcf_tree_unlock(tp);
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basic_delete_filter(tp, t);
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return 0;
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}
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return -ENOENT;
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}
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static inline int basic_set_parms(struct tcf_proto *tp, struct basic_filter *f,
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unsigned long base, struct rtattr **tb,
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struct rtattr *est)
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{
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int err = -EINVAL;
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struct tcf_exts e;
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struct tcf_ematch_tree t;
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if (tb[TCA_BASIC_CLASSID-1])
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if (RTA_PAYLOAD(tb[TCA_BASIC_CLASSID-1]) < sizeof(u32))
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return err;
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err = tcf_exts_validate(tp, tb, est, &e, &basic_ext_map);
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if (err < 0)
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return err;
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err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES-1], &t);
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if (err < 0)
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goto errout;
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if (tb[TCA_BASIC_CLASSID-1]) {
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f->res.classid = *(u32*)RTA_DATA(tb[TCA_BASIC_CLASSID-1]);
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tcf_bind_filter(tp, &f->res, base);
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}
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tcf_exts_change(tp, &f->exts, &e);
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tcf_em_tree_change(tp, &f->ematches, &t);
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return 0;
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errout:
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tcf_exts_destroy(tp, &e);
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return err;
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}
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static int basic_change(struct tcf_proto *tp, unsigned long base, u32 handle,
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struct rtattr **tca, unsigned long *arg)
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{
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int err = -EINVAL;
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struct basic_head *head = (struct basic_head *) tp->root;
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struct rtattr *tb[TCA_BASIC_MAX];
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struct basic_filter *f = (struct basic_filter *) *arg;
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if (tca[TCA_OPTIONS-1] == NULL)
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return -EINVAL;
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if (rtattr_parse_nested(tb, TCA_BASIC_MAX, tca[TCA_OPTIONS-1]) < 0)
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return -EINVAL;
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if (f != NULL) {
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if (handle && f->handle != handle)
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return -EINVAL;
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return basic_set_parms(tp, f, base, tb, tca[TCA_RATE-1]);
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}
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err = -ENOBUFS;
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if (head == NULL) {
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head = kzalloc(sizeof(*head), GFP_KERNEL);
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if (head == NULL)
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goto errout;
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INIT_LIST_HEAD(&head->flist);
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tp->root = head;
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}
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f = kzalloc(sizeof(*f), GFP_KERNEL);
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if (f == NULL)
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goto errout;
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err = -EINVAL;
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if (handle)
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f->handle = handle;
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else {
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unsigned int i = 0x80000000;
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do {
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if (++head->hgenerator == 0x7FFFFFFF)
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head->hgenerator = 1;
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} while (--i > 0 && basic_get(tp, head->hgenerator));
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if (i <= 0) {
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printk(KERN_ERR "Insufficient number of handles\n");
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goto errout;
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}
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f->handle = head->hgenerator;
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}
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err = basic_set_parms(tp, f, base, tb, tca[TCA_RATE-1]);
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if (err < 0)
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goto errout;
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tcf_tree_lock(tp);
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list_add(&f->link, &head->flist);
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tcf_tree_unlock(tp);
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*arg = (unsigned long) f;
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return 0;
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errout:
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if (*arg == 0UL && f)
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kfree(f);
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return err;
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}
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static void basic_walk(struct tcf_proto *tp, struct tcf_walker *arg)
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{
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struct basic_head *head = (struct basic_head *) tp->root;
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struct basic_filter *f;
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list_for_each_entry(f, &head->flist, link) {
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if (arg->count < arg->skip)
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goto skip;
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if (arg->fn(tp, (unsigned long) f, arg) < 0) {
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arg->stop = 1;
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break;
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}
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skip:
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arg->count++;
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}
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}
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static int basic_dump(struct tcf_proto *tp, unsigned long fh,
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struct sk_buff *skb, struct tcmsg *t)
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{
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struct basic_filter *f = (struct basic_filter *) fh;
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unsigned char *b = skb->tail;
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struct rtattr *rta;
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if (f == NULL)
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return skb->len;
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t->tcm_handle = f->handle;
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rta = (struct rtattr *) b;
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RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
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if (f->res.classid)
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RTA_PUT(skb, TCA_BASIC_CLASSID, sizeof(u32), &f->res.classid);
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if (tcf_exts_dump(skb, &f->exts, &basic_ext_map) < 0 ||
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tcf_em_tree_dump(skb, &f->ematches, TCA_BASIC_EMATCHES) < 0)
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goto rtattr_failure;
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rta->rta_len = (skb->tail - b);
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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 tcf_proto_ops cls_basic_ops = {
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.kind = "basic",
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.classify = basic_classify,
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.init = basic_init,
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.destroy = basic_destroy,
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.get = basic_get,
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.put = basic_put,
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.change = basic_change,
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.delete = basic_delete,
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.walk = basic_walk,
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.dump = basic_dump,
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.owner = THIS_MODULE,
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};
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static int __init init_basic(void)
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{
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return register_tcf_proto_ops(&cls_basic_ops);
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}
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static void __exit exit_basic(void)
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{
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unregister_tcf_proto_ops(&cls_basic_ops);
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}
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module_init(init_basic)
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module_exit(exit_basic)
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MODULE_LICENSE("GPL");
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