.TH "uselessfns" 3 "Thu Jan 28 2021" "Version 1.0.5" "libnetfilter_queue" \" -*- nroff -*-
.ad l
.nh
.SH NAME
uselessfns \- Internal functions
.SH SYNOPSIS
.br
.PP
.SS "Functions"

.in +1c
.ti -1c
.RI "void \fBpktb_push\fP (struct pkt_buff *pktb, unsigned int len)"
.br
.ti -1c
.RI "void \fBpktb_pull\fP (struct pkt_buff *pktb, unsigned int len)"
.br
.ti -1c
.RI "void \fBpktb_put\fP (struct pkt_buff *pktb, unsigned int len)"
.br
.ti -1c
.RI "void \fBpktb_trim\fP (struct pkt_buff *pktb, unsigned int len)"
.br
.in -1c
.SH "Detailed Description"
.PP 

.PP
\fBWarning\fP
.RS 4
Do not use these functions\&. Instead, always use the mangle function appropriate to the level at which you are working\&. 
.br
\fBpktb_mangle()\fP uses all the below functions except \fIpktb_pull\fP, which is not used by anything\&. 
.RE
.PP

.SH "Function Documentation"
.PP 
.SS "void pktb_pull (struct pkt_buff * pktb, unsigned int len)"
pktb_pull - increment pointer to packet buffer 
.PP
\fBParameters\fP
.RS 4
\fIpktb\fP Pointer to userspace packet buffer 
.br
\fIlen\fP Number of bytes to add to packet start address 
.RE
.PP

.PP
Definition at line 178 of file pktbuff\&.c\&.
.SS "void pktb_push (struct pkt_buff * pktb, unsigned int len)"
pktb_push - decrement pointer to packet buffer 
.PP
\fBParameters\fP
.RS 4
\fIpktb\fP Pointer to userspace packet buffer 
.br
\fIlen\fP Number of bytes to subtract from packet start address 
.RE
.PP

.PP
Definition at line 166 of file pktbuff\&.c\&.
.SS "void pktb_put (struct pkt_buff * pktb, unsigned int len)"
pktb_put - add extra bytes to the tail of the packet buffer 
.PP
\fBParameters\fP
.RS 4
\fIpktb\fP Pointer to userspace packet buffer 
.br
\fIlen\fP Number of bytes to add to packet tail (and length) 
.RE
.PP

.PP
Definition at line 190 of file pktbuff\&.c\&.
.SS "void pktb_trim (struct pkt_buff * pktb, unsigned int len)"
pktb_trim - set new length for this packet buffer 
.PP
\fBParameters\fP
.RS 4
\fIpktb\fP Pointer to userspace packet buffer 
.br
\fIlen\fP New packet length (tail is adjusted to reflect this) 
.RE
.PP

.PP
Definition at line 201 of file pktbuff\&.c\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for libnetfilter_queue from the source code\&.