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

/*	raw_cb.c	4.12	82/10/09	*/

#include "../h/param.h"
#include "../h/systm.h"
#include "../h/mbuf.h"
#include "../h/socket.h"
#include "../h/socketvar.h"
#include "../h/mtpr.h"
#include "../net/if.h"
#include "../net/raw_cb.h"
#include <errno.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);
	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);
	(void) 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 *);
	struct mbuf *m;
	register struct rawcb *rp;

	if (ifnet == 0)
		return (EADDRNOTAVAIL);
{
#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, 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 */
	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
14fa60f2	1	/* raw_cb.c 4.12 82/10/09 */
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"
	8	#include "../h/mtpr.h"
785d93ac BJ	9	#include "../net/if.h"
785d93ac BJ	10	#include "../net/raw_cb.h"
c47a5909	11	#include <errno.h>
785d93ac BJ	12
	13	/*
	14	* Routines to manage the raw protocol control blocks.
	15	*
	16	* TODO:
	17	* hash lookups by protocol family/protocol + address family
ee787340	18	* take care of unique address problems per AF?
1e25d807	19	* redo address binding to allow wildcards
785d93ac BJ	20	*/
	21
	22	/*
	23	* Allocate a control block and a nominal amount
	24	* of buffer space for the socket.
	25	*/
14fa60f2	26	raw_attach(so)
785d93ac	27	register struct socket *so;
785d93ac BJ	28	{
	29	struct mbuf *m;
	30	register struct rawcb *rp;
785d93ac	31
785d93ac BJ	32	m = m_getclr(M_DONTWAIT);
	33	if (m == 0)
	34	return (ENOBUFS);
	35	if (sbreserve(&so->so_snd, RAWSNDQ) == 0)
	36	goto bad;
	37	if (sbreserve(&so->so_rcv, RAWRCVQ) == 0)
	38	goto bad2;
	39	rp = mtod(m, struct rawcb *);
	40	rp->rcb_socket = so;
	41	insque(rp, &rawcb);
	42	so->so_pcb = (caddr_t)rp;
	43	rp->rcb_pcb = 0;
785d93ac BJ	44	return (0);
	45	bad2:
	46	sbrelease(&so->so_snd);
	47	bad:
	48	(void) m_free(m);
	49	return (ENOBUFS);
	50	}
	51
	52	/*
	53	* Detach the raw connection block and discard
	54	* socket resources.
	55	*/
	56	raw_detach(rp)
	57	register struct rawcb *rp;
	58	{
	59	struct socket *so = rp->rcb_socket;
	60
785d93ac BJ	61	so->so_pcb = 0;
	62	sofree(so);
	63	remque(rp);
ee787340	64	(void) m_freem(dtom(rp));
785d93ac BJ	65	}
	66
	67	/*
	68	* Disconnect and possibly release resources.
	69	*/
	70	raw_disconnect(rp)
	71	struct rawcb *rp;
	72	{
126472ab	73	rp->rcb_flags &= ~RAW_FADDR;
f832270b	74	if (rp->rcb_socket->so_state & SS_NOFDREF)
785d93ac BJ	75	raw_detach(rp);
	76	}
	77
14fa60f2 BJ	78	raw_bind(so, nam)
	79	register struct socket *so;
	80	struct mbuf *nam;
	81	{
	82	struct sockaddr addr = mtod(nam, struct sockaddr );
	83	struct mbuf *m;
	84	register struct rawcb *rp;
	85
	86	if (ifnet == 0)
	87	return (EADDRNOTAVAIL);
	88	{
	89	#include "../netinet/in.h"
	90	#include "../netinet/in_systm.h"
	91	/* BEGIN DUBIOUS */
	92	/*
	93	* Should we verify address not already in use?
	94	* Some say yes, others no.
	95	*/
	96	switch (addr->sa_family) {
	97
	98	case AF_IMPLINK:
	99	case AF_INET:
	100	if (((struct sockaddr_in *)addr)->sin_addr.s_addr &&
	101	if_ifwithaddr(addr) == 0)
	102	return (EADDRNOTAVAIL);
	103	break;
	104
	105	#ifdef PUP
	106	/*
	107	* Curious, we convert PUP address format to internet
	108	* to allow us to verify we're asking for an Ethernet
	109	* interface. This is wrong, but things are heavily
	110	* oriented towards the internet addressing scheme, and
	111	* converting internet to PUP would be very expensive.
	112	*/
	113	case AF_PUP: {
	114	#include "../netpup/pup.h"
	115	struct sockaddr_pup spup = (struct sockaddr_pup )addr;
	116	struct sockaddr_in inpup;
	117
	118	bzero((caddr_t)&inpup, sizeof(inpup));
	119	inpup.sin_family = AF_INET;
	120	inpup.sin_addr.s_net = spup->sp_net;
	121	inpup.sin_addr.s_impno = spup->sp_host;
	122	if (inpup.sin_addr.s_addr &&
	123	if_ifwithaddr((struct sockaddr *)&inpup) == 0)
	124	return (EADDRNOTAVAIL);
	125	break;
	126	}
	127	#endif
	128
	129	default:
	130	return (EAFNOSUPPORT);
	131	}
	132	}
	133	/* END DUBIOUS */
	134	bcopy((caddr_t)addr, (caddr_t)&rp->rcb_laddr, sizeof (*addr));
	135	rp->rcb_flags \|= RAW_LADDR;
	136	return (0);
	137	}
	138
785d93ac BJ	139	/*
	140	* Associate a peer's address with a
	141	* raw connection block.
	142	*/
14fa60f2	143	raw_connaddr(rp, nam)
785d93ac	144	struct rawcb *rp;
14fa60f2	145	struct mbuf *nam;
785d93ac	146	{
14fa60f2 BJ	147	struct sockaddr addr = mtod(nam, struct sockaddr );
14fa60f2 BJ	148
126472ab SL	149	bcopy((caddr_t)addr, (caddr_t)&rp->rcb_faddr, sizeof(*addr));
126472ab SL	150	rp->rcb_flags \|= RAW_FADDR;
785d93ac	151	}