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53 lines
1.1 KiB
Diff
53 lines
1.1 KiB
Diff
--- a/include/linux/ip.h
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+++ b/include/linux/ip.h
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@@ -104,6 +104,16 @@ struct iphdr {
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/*The options start here. */
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};
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+#ifdef __KERNEL__
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+#include <linux/skbuff.h>
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+
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+static inline struct iphdr *ip_hdr(const struct sk_buff *skb)
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+{
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+ return (struct iphdr *)skb_network_header(skb);
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+}
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+
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+#endif
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+
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struct ip_auth_hdr {
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__u8 nexthdr;
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__u8 hdrlen; /* This one is measured in 32 bit units! */
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--- a/include/linux/skbuff.h
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+++ b/include/linux/skbuff.h
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@@ -966,6 +966,16 @@ static inline void skb_reserve(struct sk
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skb->tail += len;
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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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+
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+static inline unsigned char *skb_tail_pointer(const struct sk_buff *skb)
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+{
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+ return skb->tail;
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+}
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+
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/*
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* CPUs often take a performance hit when accessing unaligned memory
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* locations. The actual performance hit varies, it can be small if the
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--- a/include/net/ip.h
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+++ b/include/net/ip.h
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@@ -43,6 +43,11 @@ struct inet_skb_parm
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#define IPSKB_REROUTED 16
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};
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+static inline unsigned int ip_hdrlen(const struct sk_buff *skb)
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+{
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+ return ip_hdr(skb)->ihl * 4;
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+}
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+
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struct ipcm_cookie
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{
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__be32 addr;
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