5f60d5f6bb
asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* net/sched/em_cmp.c Simple packet data comparison ematch
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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/skbuff.h>
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#include <linux/tc_ematch/tc_em_cmp.h>
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#include <linux/unaligned.h>
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#include <net/pkt_cls.h>
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static inline int cmp_needs_transformation(struct tcf_em_cmp *cmp)
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{
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return unlikely(cmp->flags & TCF_EM_CMP_TRANS);
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}
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static int em_cmp_match(struct sk_buff *skb, struct tcf_ematch *em,
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struct tcf_pkt_info *info)
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{
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struct tcf_em_cmp *cmp = (struct tcf_em_cmp *) em->data;
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unsigned char *ptr = tcf_get_base_ptr(skb, cmp->layer) + cmp->off;
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u32 val = 0;
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if (!tcf_valid_offset(skb, ptr, cmp->align))
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return 0;
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switch (cmp->align) {
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case TCF_EM_ALIGN_U8:
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val = *ptr;
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break;
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case TCF_EM_ALIGN_U16:
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val = get_unaligned_be16(ptr);
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if (cmp_needs_transformation(cmp))
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val = be16_to_cpu(val);
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break;
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case TCF_EM_ALIGN_U32:
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/* Worth checking boundaries? The branching seems
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* to get worse. Visit again.
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*/
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val = get_unaligned_be32(ptr);
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if (cmp_needs_transformation(cmp))
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val = be32_to_cpu(val);
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break;
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default:
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return 0;
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}
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if (cmp->mask)
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val &= cmp->mask;
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switch (cmp->opnd) {
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case TCF_EM_OPND_EQ:
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return val == cmp->val;
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case TCF_EM_OPND_LT:
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return val < cmp->val;
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case TCF_EM_OPND_GT:
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return val > cmp->val;
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}
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return 0;
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}
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static struct tcf_ematch_ops em_cmp_ops = {
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.kind = TCF_EM_CMP,
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.datalen = sizeof(struct tcf_em_cmp),
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.match = em_cmp_match,
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.owner = THIS_MODULE,
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.link = LIST_HEAD_INIT(em_cmp_ops.link)
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};
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static int __init init_em_cmp(void)
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{
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return tcf_em_register(&em_cmp_ops);
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}
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static void __exit exit_em_cmp(void)
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{
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tcf_em_unregister(&em_cmp_ops);
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}
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MODULE_DESCRIPTION("ematch classifier for basic data types(8/16/32 bit) against skb data");
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MODULE_LICENSE("GPL");
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module_init(init_em_cmp);
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module_exit(exit_em_cmp);
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MODULE_ALIAS_TCF_EMATCH(TCF_EM_CMP);
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