mirror of
https://github.com/openvswitch/ovs
synced 2025-10-27 15:18:06 +00:00
40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
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#include <linux/module.h>
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#include <linux/jiffies.h>
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#include <linux/kernel.h>
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#include <linux/ctype.h>
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#include <linux/inet.h>
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#include <linux/mm.h>
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#include <linux/net.h>
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#include <net/checksum.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/percpu.h>
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#include <linux/init.h>
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#include <linux/ratelimit.h>
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#include <net/sock.h>
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#include <asm/byteorder.h>
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#include <asm/uaccess.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0)
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void inet_proto_csum_replace16(__sum16 *sum, struct sk_buff *skb,
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const __be32 *from, const __be32 *to,
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int pseudohdr)
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{
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__be32 diff[] = {
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~from[0], ~from[1], ~from[2], ~from[3],
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to[0], to[1], to[2], to[3],
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};
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if (skb->ip_summed != CHECKSUM_PARTIAL) {
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*sum = csum_fold(csum_partial(diff, sizeof(diff),
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~csum_unfold(*sum)));
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if (skb->ip_summed == CHECKSUM_COMPLETE && pseudohdr)
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skb->csum = ~csum_partial(diff, sizeof(diff),
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~skb->csum);
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} else if (pseudohdr)
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*sum = ~csum_fold(csum_partial(diff, sizeof(diff),
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csum_unfold(*sum)));
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}
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#endif
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