NAME

       ipv6 - IPv6 helper functions

SYNOPSIS

   Functions
       struct ip6_hdr * nfq_ip6_get_hdr (struct pkt_buff *pktb)
       int nfq_ip6_set_transport_header (struct pkt_buff *pktb, struct ip6_hdr *ip6h, uint8_t
           target)
       int nfq_ip6_mangle (struct pkt_buff *pktb, unsigned int dataoff, unsigned int
           match_offset, unsigned int match_len, const char *rep_buffer, unsigned int rep_len)
       int nfq_ip6_snprintf (char *buf, size_t size, const struct ip6_hdr *ip6h)

Detailed Description

Function Documentation

   struct ip6_hdr * nfq_ip6_get_hdr (struct pkt_buff * pktb)
       nfq_ip6_get_hdr - get IPv6 header

       Parameters
           pktb Pointer to user-space network packet buffer

       Returns
           pointer to IPv6 header if a valid header found, else NULL.

       Definition at line 36 of file ipv6.c.

   int nfq_ip6_mangle (struct pkt_buff * pktb, unsigned int dataoff, unsigned int match_offset,
       unsigned int match_len, const char * rep_buffer, unsigned int rep_len)
       nfq_ip6_mangle - mangle IPv6 packet buffer

       Parameters
           pktb Pointer to user-space network packet buffer
           dataoff Offset to layer 4 header
           match_offset Offset to content that you want to mangle
           match_len Length of the existing content you want to mangle
           rep_buffer Pointer to data you want to use to replace current content
           rep_len Length of data you want to use to replace current content

       Returns
           1 for success and 0 for failure. See pktb_mangle() for failure case

       Note
           This function updates the IPv6 length (if necessary)

       Definition at line 131 of file ipv6.c.

   int nfq_ip6_set_transport_header (struct pkt_buff * pktb, struct ip6_hdr * ip6h, uint8_t
       target)
       nfq_ip6_set_transport_header - set transport header pointer for IPv6 packet

       Parameters
           pktb Pointer to user-space network packet buffer
           ip6h Pointer to IPv6 header
           target Protocol number to find transport header (ie. IPPROTO_*)

       Returns
           1 if the protocol has been found and the transport header has been set, else 0.

       Definition at line 64 of file ipv6.c.

   int nfq_ip6_snprintf (char * buf, size_t size, const struct ip6_hdr * ip6h)
       nfq_ip6_snprintf - print IPv6 header into one buffer in iptables LOG format

       Parameters
           buf Pointer to buffer that is used to print the object
           size Size of the buffer (or remaining room in it).
           ip6h Pointer to a valid IPv6 header.

       Returns
           same as snprintf

       See also
           snprintf(3)

       Definition at line 158 of file ipv6.c.

Author

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