diff options
Diffstat (limited to 'src/extra/ipv4.c')
| -rw-r--r-- | src/extra/ipv4.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/extra/ipv4.c b/src/extra/ipv4.c index a93d113..20f3c12 100644 --- a/src/extra/ipv4.c +++ b/src/extra/ipv4.c @@ -59,6 +59,10 @@ EXPORT_SYMBOL(nfq_ip_get_hdr); * nfq_ip_set_transport_header - set transport header * \param pktb: pointer to network packet buffer * \param iph: pointer to the IPv4 header + * + * Sets the \b transport_header field in \b pktb + * + * Level 4 helper functions need this to be set. */ int nfq_ip_set_transport_header(struct pkt_buff *pktb, struct iphdr *iph) { @@ -97,8 +101,9 @@ EXPORT_SYMBOL(nfq_ip_set_checksum); * \param match_len: length of the existing content you want to mangle * \param rep_buffer: pointer to data you want to use to replace current content * \param rep_len: length of data you want to use to replace current content - * - * \note This function recalculates the IPv4 checksum (if needed). + * \returns 1 for success and 0 for failure. See pktb_mangle() for failure case + * \note This function updates the IPv4 length and recalculates the IPv4 + * checksum (if necessary) */ int nfq_ip_mangle(struct pkt_buff *pkt, unsigned int dataoff, unsigned int match_offset, unsigned int match_len, |