![Tim Schmielau](/assets/img/avatar_default.png)
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>
417 lines
8.7 KiB
C
417 lines
8.7 KiB
C
/*
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* net/sched/cls_fw.c Classifier mapping ipchains' fwmark to traffic class.
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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: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*
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* Changes:
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* Karlis Peisenieks <karlis@mt.lv> : 990415 : fw_walk off by one
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* Karlis Peisenieks <karlis@mt.lv> : 990415 : fw_delete killed all the filter (and kernel).
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* Alex <alex@pilotsoft.com> : 2004xxyy: Added Action extension
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*
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* JHS: We should remove the CONFIG_NET_CLS_IND from here
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* eventually when the meta match extension is made available
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*
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*/
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#include <linux/module.h>
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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/if_ether.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/notifier.h>
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#include <linux/netfilter.h>
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#include <net/ip.h>
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#include <net/route.h>
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#include <linux/skbuff.h>
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#include <net/sock.h>
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#include <net/act_api.h>
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#include <net/pkt_cls.h>
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#define HTSIZE (PAGE_SIZE/sizeof(struct fw_filter *))
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struct fw_head
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{
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struct fw_filter *ht[HTSIZE];
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u32 mask;
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};
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struct fw_filter
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{
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struct fw_filter *next;
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u32 id;
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struct tcf_result res;
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#ifdef CONFIG_NET_CLS_IND
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char indev[IFNAMSIZ];
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#endif /* CONFIG_NET_CLS_IND */
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struct tcf_exts exts;
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};
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static struct tcf_ext_map fw_ext_map = {
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.action = TCA_FW_ACT,
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.police = TCA_FW_POLICE
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};
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static __inline__ int fw_hash(u32 handle)
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{
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if (HTSIZE == 4096)
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return ((handle >> 24) & 0xFFF) ^
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((handle >> 12) & 0xFFF) ^
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(handle & 0xFFF);
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else if (HTSIZE == 2048)
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return ((handle >> 22) & 0x7FF) ^
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((handle >> 11) & 0x7FF) ^
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(handle & 0x7FF);
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else if (HTSIZE == 1024)
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return ((handle >> 20) & 0x3FF) ^
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((handle >> 10) & 0x3FF) ^
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(handle & 0x3FF);
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else if (HTSIZE == 512)
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return (handle >> 27) ^
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((handle >> 18) & 0x1FF) ^
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((handle >> 9) & 0x1FF) ^
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(handle & 0x1FF);
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else if (HTSIZE == 256) {
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u8 *t = (u8 *) &handle;
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return t[0] ^ t[1] ^ t[2] ^ t[3];
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} else
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return handle & (HTSIZE - 1);
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}
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static int fw_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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struct fw_head *head = (struct fw_head*)tp->root;
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struct fw_filter *f;
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int r;
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u32 id = skb->mark;
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if (head != NULL) {
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id &= head->mask;
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for (f=head->ht[fw_hash(id)]; f; f=f->next) {
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if (f->id == id) {
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*res = f->res;
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#ifdef CONFIG_NET_CLS_IND
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if (!tcf_match_indev(skb, f->indev))
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continue;
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#endif /* CONFIG_NET_CLS_IND */
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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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}
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} else {
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/* old method */
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if (id && (TC_H_MAJ(id) == 0 || !(TC_H_MAJ(id^tp->q->handle)))) {
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res->classid = id;
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res->class = 0;
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return 0;
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}
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}
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return -1;
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}
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static unsigned long fw_get(struct tcf_proto *tp, u32 handle)
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{
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struct fw_head *head = (struct fw_head*)tp->root;
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struct fw_filter *f;
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if (head == NULL)
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return 0;
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for (f=head->ht[fw_hash(handle)]; f; f=f->next) {
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if (f->id == handle)
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return (unsigned long)f;
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}
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return 0;
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}
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static void fw_put(struct tcf_proto *tp, unsigned long f)
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{
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}
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static int fw_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
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fw_delete_filter(struct tcf_proto *tp, struct fw_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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kfree(f);
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}
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static void fw_destroy(struct tcf_proto *tp)
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{
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struct fw_head *head = (struct fw_head*)xchg(&tp->root, NULL);
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struct fw_filter *f;
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int h;
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if (head == NULL)
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return;
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for (h=0; h<HTSIZE; h++) {
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while ((f=head->ht[h]) != NULL) {
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head->ht[h] = f->next;
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fw_delete_filter(tp, f);
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}
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}
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kfree(head);
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}
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static int fw_delete(struct tcf_proto *tp, unsigned long arg)
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{
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struct fw_head *head = (struct fw_head*)tp->root;
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struct fw_filter *f = (struct fw_filter*)arg;
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struct fw_filter **fp;
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if (head == NULL || f == NULL)
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goto out;
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for (fp=&head->ht[fw_hash(f->id)]; *fp; fp = &(*fp)->next) {
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if (*fp == f) {
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tcf_tree_lock(tp);
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*fp = f->next;
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tcf_tree_unlock(tp);
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fw_delete_filter(tp, f);
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return 0;
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}
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}
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out:
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return -EINVAL;
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}
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static int
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fw_change_attrs(struct tcf_proto *tp, struct fw_filter *f,
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struct rtattr **tb, struct rtattr **tca, unsigned long base)
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{
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struct fw_head *head = (struct fw_head *)tp->root;
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struct tcf_exts e;
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u32 mask;
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int err;
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err = tcf_exts_validate(tp, tb, tca[TCA_RATE-1], &e, &fw_ext_map);
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if (err < 0)
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return err;
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err = -EINVAL;
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if (tb[TCA_FW_CLASSID-1]) {
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if (RTA_PAYLOAD(tb[TCA_FW_CLASSID-1]) != sizeof(u32))
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goto errout;
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f->res.classid = *(u32*)RTA_DATA(tb[TCA_FW_CLASSID-1]);
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tcf_bind_filter(tp, &f->res, base);
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}
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#ifdef CONFIG_NET_CLS_IND
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if (tb[TCA_FW_INDEV-1]) {
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err = tcf_change_indev(tp, f->indev, tb[TCA_FW_INDEV-1]);
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if (err < 0)
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goto errout;
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}
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#endif /* CONFIG_NET_CLS_IND */
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if (tb[TCA_FW_MASK-1]) {
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if (RTA_PAYLOAD(tb[TCA_FW_MASK-1]) != sizeof(u32))
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goto errout;
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mask = *(u32*)RTA_DATA(tb[TCA_FW_MASK-1]);
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if (mask != head->mask)
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goto errout;
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} else if (head->mask != 0xFFFFFFFF)
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goto errout;
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tcf_exts_change(tp, &f->exts, &e);
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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 fw_change(struct tcf_proto *tp, unsigned long base,
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u32 handle,
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struct rtattr **tca,
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unsigned long *arg)
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{
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struct fw_head *head = (struct fw_head*)tp->root;
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struct fw_filter *f = (struct fw_filter *) *arg;
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struct rtattr *opt = tca[TCA_OPTIONS-1];
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struct rtattr *tb[TCA_FW_MAX];
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int err;
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if (!opt)
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return handle ? -EINVAL : 0;
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if (rtattr_parse_nested(tb, TCA_FW_MAX, opt) < 0)
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return -EINVAL;
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if (f != NULL) {
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if (f->id != handle && handle)
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return -EINVAL;
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return fw_change_attrs(tp, f, tb, tca, base);
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}
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if (!handle)
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return -EINVAL;
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if (head == NULL) {
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u32 mask = 0xFFFFFFFF;
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if (tb[TCA_FW_MASK-1]) {
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if (RTA_PAYLOAD(tb[TCA_FW_MASK-1]) != sizeof(u32))
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return -EINVAL;
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mask = *(u32*)RTA_DATA(tb[TCA_FW_MASK-1]);
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}
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head = kzalloc(sizeof(struct fw_head), GFP_KERNEL);
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if (head == NULL)
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return -ENOBUFS;
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head->mask = mask;
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tcf_tree_lock(tp);
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tp->root = head;
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tcf_tree_unlock(tp);
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}
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f = kzalloc(sizeof(struct fw_filter), GFP_KERNEL);
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if (f == NULL)
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return -ENOBUFS;
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f->id = handle;
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err = fw_change_attrs(tp, f, tb, tca, base);
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if (err < 0)
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goto errout;
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f->next = head->ht[fw_hash(handle)];
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tcf_tree_lock(tp);
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head->ht[fw_hash(handle)] = f;
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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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kfree(f);
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return err;
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}
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static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg)
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{
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struct fw_head *head = (struct fw_head*)tp->root;
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int h;
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if (head == NULL)
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arg->stop = 1;
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if (arg->stop)
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return;
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for (h = 0; h < HTSIZE; h++) {
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struct fw_filter *f;
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for (f = head->ht[h]; f; f = f->next) {
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if (arg->count < arg->skip) {
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arg->count++;
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continue;
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}
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if (arg->fn(tp, (unsigned long)f, arg) < 0) {
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arg->stop = 1;
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return;
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}
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arg->count++;
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}
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}
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}
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static int fw_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 fw_head *head = (struct fw_head *)tp->root;
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struct fw_filter *f = (struct fw_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->id;
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if (!f->res.classid && !tcf_exts_is_available(&f->exts))
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return skb->len;
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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_FW_CLASSID, 4, &f->res.classid);
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#ifdef CONFIG_NET_CLS_IND
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if (strlen(f->indev))
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RTA_PUT(skb, TCA_FW_INDEV, IFNAMSIZ, f->indev);
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#endif /* CONFIG_NET_CLS_IND */
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if (head->mask != 0xFFFFFFFF)
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RTA_PUT(skb, TCA_FW_MASK, 4, &head->mask);
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if (tcf_exts_dump(skb, &f->exts, &fw_ext_map) < 0)
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goto rtattr_failure;
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rta->rta_len = skb->tail - b;
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if (tcf_exts_dump_stats(skb, &f->exts, &fw_ext_map) < 0)
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goto rtattr_failure;
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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_fw_ops = {
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.next = NULL,
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.kind = "fw",
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.classify = fw_classify,
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.init = fw_init,
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.destroy = fw_destroy,
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.get = fw_get,
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.put = fw_put,
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.change = fw_change,
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.delete = fw_delete,
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.walk = fw_walk,
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.dump = fw_dump,
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.owner = THIS_MODULE,
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};
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static int __init init_fw(void)
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{
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return register_tcf_proto_ops(&cls_fw_ops);
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}
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static void __exit exit_fw(void)
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{
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unregister_tcf_proto_ops(&cls_fw_ops);
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}
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module_init(init_fw)
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module_exit(exit_fw)
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MODULE_LICENSE("GPL");
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