Ben Pfaff
7fe9460749
Functions added in the 2.6.22 kernel in tcp.h and skbuff.h have been added to the compatibility headers. Additionally the data argument was dropped in 2.6.22 for the work queue macros, requiring them to be redfined for previous kernels. Based on changes from David Erickson.
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
#ifndef __LINUX_SKBUFF_WRAPPER_H
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#define __LINUX_SKBUFF_WRAPPER_H 1
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#include_next <linux/skbuff.h>
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#include <linux/version.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
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/* Emulate Linux 2.6.17 and later behavior, in which kfree_skb silently ignores
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* null pointer arguments. */
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#define kfree_skb(skb) kfree_skb_maybe_null(skb)
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static inline void kfree_skb_maybe_null(struct sk_buff *skb)
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{
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if (likely(skb != NULL))
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(kfree_skb)(skb);
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}
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
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/* Note that CHECKSUM_PARTIAL is not implemented, but this allows us to at
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* least test against it: see update_csum() in forward.c. */
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#define CHECKSUM_PARTIAL 3
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#define CHECKSUM_COMPLETE CHECKSUM_HW
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#endif /* linux kernel < 2.6.19 */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
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#define mac_header mac.raw
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#define network_header nh.raw
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static inline unsigned char *skb_transport_header(const struct sk_buff *skb)
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{
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return skb->h.raw;
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}
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static inline void skb_set_transport_header(struct sk_buff *skb,
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const int offset)
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{
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skb->h.raw = skb->data + offset;
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}
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static inline unsigned char *skb_network_header(const struct sk_buff *skb)
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{
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return skb->nh.raw;
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}
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static inline void skb_set_network_header(struct sk_buff *skb, const int offset)
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{
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skb->nh.raw = skb->data + offset;
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}
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static inline unsigned char *skb_mac_header(const struct sk_buff *skb)
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{
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return skb->mac.raw;
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}
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static inline void skb_reset_mac_header(struct sk_buff *skb)
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{
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skb->mac_header = skb->data;
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}
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static inline void skb_set_mac_header(struct sk_buff *skb, const int offset)
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{
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skb->mac.raw = skb->data + offset;
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}
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static inline int skb_transport_offset(const struct sk_buff *skb)
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{
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return skb_transport_header(skb) - skb->data;
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}
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#endif /* linux kernel < 2.6.22 */
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#endif
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