ngatmbase man page on FreeBSD

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NGATMBASE(4)		 BSD Kernel Interfaces Manual		  NGATMBASE(4)

     ngatmbase — netgraph ATM utility module

     #include <netnatm/unimsg.h>
     #include <netgraph/atm/ngatmbase.h>

     struct mbuf *
     uni_msg_pack_mbuf(struct uni_msg *msg, void *hdr, size_t len);

     struct uni_msg *
     uni_msg_alloc(size_t len);

     struct uni_msg *
     uni_msg_build(void *buf, ...);

     uni_msg_destroy(struct uni_msg *msg);

     uni_msg_unpack_mbuf(struct mbuf *m, struct uni_msg *msgp);

     This module provides utility functions for the handling of signalling
     messages to the NgATM modules.

     The uni_msg_pack_mbuf() function packs a message into one or several
     mbufs optionally prepending a header.  The header is given by its address
     hdr and length len.  If hdr is NULL or len equals 0, no header is
     prepended.	 Either msg or hdr may be NULL but not both.  The
     uni_msg_pack_mbuf() function returns a pointer to the allocated mbuf
     chain or NULL in the case of an error.

     The uni_msg_alloc() function allocates a new message with space for at
     least len bytes.  In the case of an error NULL is returned.

     The uni_msg_build() function constructs a message from pieces.  Each
     piece is given by a pair of arguments, the first of type void * and the
     second a size_t.  The list of pieces must be terminated by (void *)NULL.

     The uni_msg_destroy() function destroyes the messages and frees all the
     messages's memory.

     The uni_msg_unpack_mbuf() function unpacks an mbuf chain info a uni_msg.
     A pointer to the newly allocated message is stored in msgp and 0 is
     returned.	In the case of an error (either when no packet header is found
     in the first mbuf or memory cannot be allocated) the function returns an
     appropriate error code.

     ng_ccatm(4), ng_sscfu(4), ng_sscop(4), ng_uni(4)

     Harti Brandt ⟨⟩

BSD				August 24, 2004				   BSD

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