sys/netiso/clnp_output.c

80 #include <netiso/clnp.h>
142  * PURPOSE:		output the data in the mbuf as a clnp datagram
144  *			The data specified by m0 is sent as a clnp datagram.
151  *			clnp rules. Options will not be freed.
163  *			be send as raw clnp.
174  *			CLNP_NO_CKSUM - don't compute clnp checksum
177  *			When checking for a cached packet, clnp checks
182  *			must invalidate the clnp cache. It might be perferable
183  *			to have clnp check that the route has the same dest, but
195 	struct mbuf *m = m0;		/* mbuf for clnp header chain */
196 	struct clnp_fixed *clnp;	/* ptr to fixed part of hdr */
282 		clnp = mtod(m, struct clnp_fixed *);
284 		struct clnp_optidx *oidx = NULL;	/* index to clnp options */
411 		clnp = mtod(m, struct clnp_fixed *);
418 			*clnp = raw_template;
420 			*clnp = echo_template;
422 			*clnp = echor_template;
424 			*clnp = dt_template;
427 			clnp->cnf_type &= ~CNF_SEG_OK;
429 			clnp->cnf_type &= ~CNF_ERR_OK;
487 		hoff = (char *) clnp + sizeof(struct clnp_fixed);
494 		if (clnp->cnf_type & CNF_SEG_OK) {
495 			clcp->clc_segoff = hoff - (char *)clnp;
498 		clnp->cnf_hdr_len = m->m_len = (u_char)(hoff - (char *)clnp);
499 		hdrlen = clnp->cnf_hdr_len;
510 			clnp->cnf_hdr_len += sizeof(qos_option);
531 			clnp->cnf_hdr_len += opt_copy->m_len;
542 			clcp->clc_hdr = m_copy(m, 0, (int) clnp->cnf_hdr_len);
554 	total_len = clnp->cnf_hdr_len + datalen;
555 	if (clnp->cnf_type & CNF_SEG_OK) {
560 		(void)memcpy((char *)clnp + clcp->clc_segoff, &seg_part,
564 		HTOC(clnp->cnf_seglen_msb, clnp->cnf_seglen_lsb, total_len);
567 		 *	Compute clnp checksum (on header only)
570 			HTOC(clnp->cnf_cksum_msb, clnp->cnf_cksum_lsb, 0);
572 			iso_gen_csum(m, CLNP_CKSUM_OFF, (int) clnp->cnf_hdr_len);