diff options
Diffstat (limited to 'src/extra/pktbuff.c')
-rw-r--r-- | src/extra/pktbuff.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/extra/pktbuff.c b/src/extra/pktbuff.c index 1c15a00..25b173b 100644 --- a/src/extra/pktbuff.c +++ b/src/extra/pktbuff.c @@ -36,7 +36,7 @@ * \param extra Extra memory in the tail to be allocated (for mangling) * * This function returns a packet buffer that contains the packet data and - * some extra memory room in the tail (in case of requested). + * some extra memory room in the tail (if requested). * * \return a pointer to a new queue handle or NULL on failure. */ @@ -224,6 +224,19 @@ static int enlarge_pkt(struct pkt_buff *pkt, unsigned int extra) return 1; } +/** + * pktb_mangle - adjust contents of a packet + * \param pkt Pointer to packet buffer + * \param dataoff Offset to layer 3 header. Specify zero to access layer 2 (IP) + * header + * \param match_offset Further offset to content that you want to mangle + * \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 + * \returns 1 for success and 0 for failure. Failure will occur if the \b extra + * argument to the pktb_alloc() call that created \b pkt is less than the excess + * of \b rep_len over \b match_len + */ int pktb_mangle(struct pkt_buff *pkt, unsigned int dataoff, unsigned int match_offset, |