27 lines
601 B
C
27 lines
601 B
C
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#include <linux/kernel.h>
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#include <linux/netfilter.h>
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#include <linux/netfilter_ipv4.h>
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#include <linux/netfilter_ipv6.h>
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__sum16 nf_checksum(struct sk_buff *skb, unsigned int hook,
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unsigned int dataoff, u_int8_t protocol,
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unsigned short family)
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{
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const struct nf_ipv6_ops *v6ops;
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__sum16 csum = 0;
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switch (family) {
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case AF_INET:
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csum = nf_ip_checksum(skb, hook, dataoff, protocol);
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break;
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case AF_INET6:
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v6ops = rcu_dereference(nf_ipv6_ops);
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if (v6ops)
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csum = v6ops->checksum(skb, hook, dataoff, protocol);
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break;
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}
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return csum;
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}
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EXPORT_SYMBOL_GPL(nf_checksum);
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