[unix-history] / usr / src / sys / net / raw_cb.c

/*	raw_cb.c	4.16	83/02/10	*/

#include "../h/param.h"
#include "../h/systm.h"
#include "../h/mbuf.h"
#include "../h/socket.h"
#include "../h/socketvar.h"
#include "../h/errno.h"

#include "../net/if.h"
#include "../net/raw_cb.h"

#include "../vax/mtpr.h"

/*
 * Routines to manage the raw protocol control blocks. 
 *
 * TODO:
 *	hash lookups by protocol family/protocol + address family
 *	take care of unique address problems per AF?
 *	redo address binding to allow wildcards
 */

/*
 * Allocate a control block and a nominal amount
 * of buffer space for the socket.
 */
raw_attach(so)
	register struct socket *so;
{
	struct mbuf *m;
	register struct rawcb *rp;

	m = m_getclr(M_DONTWAIT, MT_PCB);
	if (m == 0)
		return (ENOBUFS);
	if (sbreserve(&so->so_snd, RAWSNDQ) == 0)
		goto bad;
	if (sbreserve(&so->so_rcv, RAWRCVQ) == 0)
		goto bad2;
	rp = mtod(m, struct rawcb *);
	rp->rcb_socket = so;
	insque(rp, &rawcb);
	so->so_pcb = (caddr_t)rp;
	rp->rcb_pcb = 0;
	return (0);
bad2:
	sbrelease(&so->so_snd);
bad:
	(void) m_free(m);
	return (ENOBUFS);
}

/*
 * Detach the raw connection block and discard
 * socket resources.
 */
raw_detach(rp)
	register struct rawcb *rp;
{
	struct socket *so = rp->rcb_socket;

	so->so_pcb = 0;
	sofree(so);
	remque(rp);
	m_freem(dtom(rp));
}

/*
 * Disconnect and possibly release resources.
 */
raw_disconnect(rp)
	struct rawcb *rp;
{

	rp->rcb_flags &= ~RAW_FADDR;
	if (rp->rcb_socket->so_state & SS_NOFDREF)
		raw_detach(rp);
}

raw_bind(so, nam)
	register struct socket *so;
	struct mbuf *nam;
{
	struct sockaddr *addr = mtod(nam, struct sockaddr *);
	register struct rawcb *rp;

	if (ifnet == 0)
		return (EADDRNOTAVAIL);
{
#include "../h/domain.h"
#include "../netinet/in.h"
#include "../netinet/in_systm.h"
/* BEGIN DUBIOUS */
	/*
	 * Should we verify address not already in use?
	 * Some say yes, others no.
	 */
	switch (addr->sa_family) {

	case AF_IMPLINK:
	case AF_INET:
		if (((struct sockaddr_in *)addr)->sin_addr.s_addr &&
		    if_ifwithaddr(addr) == 0)
			return (EADDRNOTAVAIL);
		break;

#ifdef PUP
	/*
	 * Curious, we convert PUP address format to internet
	 * to allow us to verify we're asking for an Ethernet
	 * interface.  This is wrong, but things are heavily
	 * oriented towards the internet addressing scheme, and
	 * converting internet to PUP would be very expensive.
	 */
	case AF_PUP: {
#include "../netpup/pup.h"
		struct sockaddr_pup *spup = (struct sockaddr_pup *)addr;
		struct sockaddr_in inpup;

		bzero((caddr_t)&inpup, (unsigned)sizeof(inpup));
		inpup.sin_family = AF_INET;
		inpup.sin_addr.s_net = spup->sp_net;
		inpup.sin_addr.s_impno = spup->sp_host;
		if (inpup.sin_addr.s_addr &&
		    if_ifwithaddr((struct sockaddr *)&inpup) == 0)
			return (EADDRNOTAVAIL);
		break;
	}
#endif

	default:
		return (EAFNOSUPPORT);
	}
}
/* END DUBIOUS */
	rp = sotorawcb(so);
	bcopy((caddr_t)addr, (caddr_t)&rp->rcb_laddr, sizeof (*addr));
	rp->rcb_flags |= RAW_LADDR;
	return (0);
}

/*
 * Associate a peer's address with a
 * raw connection block.
 */
raw_connaddr(rp, nam)
	struct rawcb *rp;
	struct mbuf *nam;
{
	struct sockaddr *addr = mtod(nam, struct sockaddr *);

	bcopy((caddr_t)addr, (caddr_t)&rp->rcb_faddr, sizeof(*addr));
	rp->rcb_flags |= RAW_FADDR;
}
Commit	Line	Data
f4d55810	1	/* raw_cb.c 4.16 83/02/10 */
785d93ac BJ	2
	3	#include "../h/param.h"
	4	#include "../h/systm.h"
	5	#include "../h/mbuf.h"
	6	#include "../h/socket.h"
	7	#include "../h/socketvar.h"
f4d55810 SL	8	#include "../h/errno.h"
f4d55810 SL	9
785d93ac BJ	10	#include "../net/if.h"
785d93ac BJ	11	#include "../net/raw_cb.h"
f4d55810 SL	12
f4d55810 SL	13	#include "../vax/mtpr.h"
785d93ac BJ	14
	15	/*
	16	* Routines to manage the raw protocol control blocks.
	17	*
	18	* TODO:
	19	* hash lookups by protocol family/protocol + address family
ee787340	20	* take care of unique address problems per AF?
1e25d807	21	* redo address binding to allow wildcards
785d93ac BJ	22	*/
	23
	24	/*
	25	* Allocate a control block and a nominal amount
	26	* of buffer space for the socket.
	27	*/
14fa60f2	28	raw_attach(so)
785d93ac	29	register struct socket *so;
785d93ac BJ	30	{
	31	struct mbuf *m;
	32	register struct rawcb *rp;
785d93ac	33
cce93e4b	34	m = m_getclr(M_DONTWAIT, MT_PCB);
785d93ac BJ	35	if (m == 0)
	36	return (ENOBUFS);
	37	if (sbreserve(&so->so_snd, RAWSNDQ) == 0)
	38	goto bad;
	39	if (sbreserve(&so->so_rcv, RAWRCVQ) == 0)
	40	goto bad2;
	41	rp = mtod(m, struct rawcb *);
	42	rp->rcb_socket = so;
	43	insque(rp, &rawcb);
	44	so->so_pcb = (caddr_t)rp;
	45	rp->rcb_pcb = 0;
785d93ac BJ	46	return (0);
	47	bad2:
	48	sbrelease(&so->so_snd);
	49	bad:
	50	(void) m_free(m);
	51	return (ENOBUFS);
	52	}
	53
	54	/*
	55	* Detach the raw connection block and discard
	56	* socket resources.
	57	*/
	58	raw_detach(rp)
	59	register struct rawcb *rp;
	60	{
	61	struct socket *so = rp->rcb_socket;
	62
785d93ac BJ	63	so->so_pcb = 0;
	64	sofree(so);
	65	remque(rp);
4053be18	66	m_freem(dtom(rp));
785d93ac BJ	67	}
	68
	69	/*
	70	* Disconnect and possibly release resources.
	71	*/
	72	raw_disconnect(rp)
	73	struct rawcb *rp;
	74	{
4053be18	75
126472ab	76	rp->rcb_flags &= ~RAW_FADDR;
f832270b	77	if (rp->rcb_socket->so_state & SS_NOFDREF)
785d93ac BJ	78	raw_detach(rp);
	79	}
	80
14fa60f2 BJ	81	raw_bind(so, nam)
	82	register struct socket *so;
	83	struct mbuf *nam;
	84	{
	85	struct sockaddr addr = mtod(nam, struct sockaddr );
14fa60f2 BJ	86	register struct rawcb *rp;
	87
	88	if (ifnet == 0)
	89	return (EADDRNOTAVAIL);
	90	{
af0b24db	91	#include "../h/domain.h"
14fa60f2 BJ	92	#include "../netinet/in.h"
	93	#include "../netinet/in_systm.h"
	94	/* BEGIN DUBIOUS */
	95	/*
	96	* Should we verify address not already in use?
	97	* Some say yes, others no.
	98	*/
	99	switch (addr->sa_family) {
	100
	101	case AF_IMPLINK:
	102	case AF_INET:
	103	if (((struct sockaddr_in *)addr)->sin_addr.s_addr &&
	104	if_ifwithaddr(addr) == 0)
	105	return (EADDRNOTAVAIL);
	106	break;
	107
	108	#ifdef PUP
	109	/*
	110	* Curious, we convert PUP address format to internet
	111	* to allow us to verify we're asking for an Ethernet
	112	* interface. This is wrong, but things are heavily
	113	* oriented towards the internet addressing scheme, and
	114	* converting internet to PUP would be very expensive.
	115	*/
	116	case AF_PUP: {
	117	#include "../netpup/pup.h"
	118	struct sockaddr_pup spup = (struct sockaddr_pup )addr;
	119	struct sockaddr_in inpup;
	120
af0b24db	121	bzero((caddr_t)&inpup, (unsigned)sizeof(inpup));
14fa60f2 BJ	122	inpup.sin_family = AF_INET;
	123	inpup.sin_addr.s_net = spup->sp_net;
	124	inpup.sin_addr.s_impno = spup->sp_host;
	125	if (inpup.sin_addr.s_addr &&
	126	if_ifwithaddr((struct sockaddr *)&inpup) == 0)
	127	return (EADDRNOTAVAIL);
	128	break;
	129	}
	130	#endif
	131
	132	default:
	133	return (EAFNOSUPPORT);
	134	}
	135	}
	136	/* END DUBIOUS */
af0b24db	137	rp = sotorawcb(so);
14fa60f2 BJ	138	bcopy((caddr_t)addr, (caddr_t)&rp->rcb_laddr, sizeof (*addr));
	139	rp->rcb_flags \|= RAW_LADDR;
	140	return (0);
	141	}
	142
785d93ac BJ	143	/*
	144	* Associate a peer's address with a
	145	* raw connection block.
	146	*/
14fa60f2	147	raw_connaddr(rp, nam)
785d93ac	148	struct rawcb *rp;
14fa60f2	149	struct mbuf *nam;
785d93ac	150	{
14fa60f2 BJ	151	struct sockaddr addr = mtod(nam, struct sockaddr );
14fa60f2 BJ	152
126472ab SL	153	bcopy((caddr_t)addr, (caddr_t)&rp->rcb_faddr, sizeof(*addr));
126472ab SL	154	rp->rcb_flags \|= RAW_FADDR;
785d93ac	155	}