121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
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#ifndef LINUX_3_1_COMPAT_H
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#define LINUX_3_1_COMPAT_H
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#include <linux/version.h>
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
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#include <linux/security.h>
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#include <linux/skbuff.h>
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#include <net/ip.h>
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#include <linux/idr.h>
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#include <asm/div64.h>
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/* This backports:
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*
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* commit 36a26c69b4c70396ef569c3452690fba0c1dec08
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* Author: Nicholas Bellinger <nab@linux-iscsi.org>
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* Date: Tue Jul 26 00:35:26 2011 -0700
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*
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* kernel.h: Add DIV_ROUND_UP_ULL and DIV_ROUND_UP_SECTOR_T macro usage
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*/
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#define DIV_ROUND_UP_ULL(ll,d) \
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({ unsigned long long _tmp = (ll)+(d)-1; do_div(_tmp, d); _tmp; })
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/* Backports 56f8a75c */
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static inline bool ip_is_fragment(const struct iphdr *iph)
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{
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return (iph->frag_off & htons(IP_MF | IP_OFFSET)) != 0;
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}
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/* mask __netdev_alloc_skb_ip_align as RHEL6 backports this */
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#define __netdev_alloc_skb_ip_align(a,b,c) compat__netdev_alloc_skb_ip_align(a,b,c)
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static inline struct sk_buff *__netdev_alloc_skb_ip_align(struct net_device *dev,
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unsigned int length, gfp_t gfp)
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{
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struct sk_buff *skb = __netdev_alloc_skb(dev, length + NET_IP_ALIGN, gfp);
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if (NET_IP_ALIGN && skb)
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skb_reserve(skb, NET_IP_ALIGN);
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return skb;
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}
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/*
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* Getting something that works in C and CPP for an arg that may or may
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* not be defined is tricky. Here, if we have "#define CONFIG_BOOGER 1"
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* we match on the placeholder define, insert the "0," for arg1 and generate
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* the triplet (0, 1, 0). Then the last step cherry picks the 2nd arg (a one).
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* When CONFIG_BOOGER is not defined, we generate a (... 1, 0) pair, and when
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* the last step cherry picks the 2nd arg, we get a zero.
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*/
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#define __ARG_PLACEHOLDER_1 0,
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#define config_enabled(cfg) _config_enabled(cfg)
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#define _config_enabled(value) __config_enabled(__ARG_PLACEHOLDER_##value)
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#define __config_enabled(arg1_or_junk) ___config_enabled(arg1_or_junk 1, 0)
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#define ___config_enabled(__ignored, val, ...) val
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#define genl_dump_check_consistent(cb, user_hdr, family)
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/*
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* IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',
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* 0 otherwise.
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*
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*/
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#define IS_ENABLED(option) \
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(config_enabled(option) || config_enabled(option##_MODULE))
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#define IFF_TX_SKB_SHARING 0x10000 /* The interface supports sharing
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* skbs on transmit */
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#define PCMCIA_DEVICE_MANF_CARD_PROD_ID3(manf, card, v3, vh3) { \
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.match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
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PCMCIA_DEV_ID_MATCH_CARD_ID| \
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PCMCIA_DEV_ID_MATCH_PROD_ID3, \
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.manf_id = (manf), \
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.card_id = (card), \
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.prod_id = { NULL, NULL, (v3), NULL }, \
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.prod_id_hash = { 0, 0, (vh3), 0 }, }
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/*
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* This has been defined in include/linux/security.h for some time, but was
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* only given an EXPORT_SYMBOL for 3.1. Add a compat_* definition to avoid
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* breaking the compile.
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*/
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#define security_sk_clone(a, b) compat_security_sk_clone(a, b)
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static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
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{
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}
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/*
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* In many versions, several architectures do not seem to include an
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* atomic64_t implementation, and do not include the software emulation from
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* asm-generic/atomic64_t.
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* Detect and handle this here.
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*/
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#include <asm/atomic.h>
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)) && !defined(ATOMIC64_INIT) && !defined(CONFIG_X86) && !((LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) && defined(CONFIG_ARM) && !defined(CONFIG_GENERIC_ATOMIC64))
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#include <asm-generic/atomic64.h>
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#endif
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/* mask ida_simple_get as RHEL6 backports this */
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#define ida_simple_get(a,b,c,d) compat_ida_simple_get(a,b,c,d)
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int ida_simple_get(struct ida *ida, unsigned int start, unsigned int end,
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gfp_t gfp_mask);
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/* mask ida_simple_remove as RHEL6 backports this */
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#define ida_simple_remove(a,b) compat_ida_simple_remove(a,b)
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void ida_simple_remove(struct ida *ida, unsigned int id);
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/* mask cpufreq_quick_get_max as RHEL6 backports this */
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#define cpufreq_quick_get_max(a) compat_cpufreq_quick_get_max(a)
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unsigned int cpufreq_quick_get_max(unsigned int cpu);
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#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0)) */
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#endif /* LINUX_3_1_COMPAT_H */
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