818812244b
- Introduce invariant that all IPX/SPX sockets will have valid so_pcb pointers to ipxpcb structures, and that for SPX, the control block pointer will always be valid. Don't attempt to free the socket or pcb at various odd points, such as disconnect. - Add a new ipxpcb flag, IPXP_DROPPED, which will be set in place of freeing PCB's so that this invariant can be maintained. This flag is now checked instead of a NULL check in various socket protocol calls. - Introduce many assertions that this invariant holds. - Various pieces of code, such as the SPX timer code, no longer needs to jump through hoops in case it frees a PCB while running. - Break out ipx_pcbfree() from ipx_pcbdetach(). Likewise spx_pcbdetach(). - Comment on some SMP-related limitations to the SPX code. - Update copyrights. MFC after: 1 month
124 lines
4.7 KiB
C
124 lines
4.7 KiB
C
/*-
|
|
* Copyright (c) 1984, 1985, 1986, 1987, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
* Copyright (c) 1995, Mike Mitchell
|
|
* Copyright (c) 2004-2006 Robert N. M. Watson
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)ipx_pcb.h
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NETIPX_IPX_PCB_H_
|
|
#define _NETIPX_IPX_PCB_H_
|
|
|
|
/*
|
|
* IPX protocol interface control block.
|
|
*/
|
|
struct ipxpcb {
|
|
LIST_ENTRY(ipxpcb) ipxp_list;
|
|
struct socket *ipxp_socket; /* back pointer to socket */
|
|
struct ipx_addr ipxp_faddr; /* destination address */
|
|
struct ipx_addr ipxp_laddr; /* socket's address */
|
|
caddr_t ipxp_pcb; /* protocol specific stuff */
|
|
struct route ipxp_route; /* routing information */
|
|
struct ipx_addr ipxp_lastdst; /* validate cached route for dg socks*/
|
|
short ipxp_flags;
|
|
u_char ipxp_dpt; /* default packet type for ipx_output */
|
|
u_char ipxp_rpt; /* last received packet type by ipx_input() */
|
|
struct mtx ipxp_mtx;
|
|
};
|
|
|
|
/*
|
|
* Additional IPX pcb-related types and variables.
|
|
*/
|
|
LIST_HEAD(ipxpcbhead, ipxpcb);
|
|
extern struct ipxpcbhead ipxpcb_list;
|
|
extern struct ipxpcbhead ipxrawpcb_list;
|
|
|
|
#ifdef _KERNEL
|
|
extern struct mtx ipxpcb_list_mtx;
|
|
#endif
|
|
|
|
/*
|
|
* IPX/SPX PCB flags.
|
|
*/
|
|
#define IPXP_IN_ABORT 0x1 /* Calling abort through socket. */
|
|
#define IPXP_RAWIN 0x2 /* Show headers on input. */
|
|
#define IPXP_RAWOUT 0x4 /* Show header on output. */
|
|
#define IPXP_ALL_PACKETS 0x8 /* Turn off higher proto processing. */
|
|
#define IPXP_CHECKSUM 0x10 /* Use checksum on this socket. */
|
|
#define IPXP_DROPPED 0x20 /* Connection dropped. */
|
|
|
|
#define IPX_WILDCARD 1
|
|
|
|
#define ipxp_lport ipxp_laddr.x_port
|
|
#define ipxp_fport ipxp_faddr.x_port
|
|
|
|
#define sotoipxpcb(so) ((struct ipxpcb *)((so)->so_pcb))
|
|
|
|
/*
|
|
* Nominal space allocated to an IPX socket.
|
|
*/
|
|
#define IPXSNDQ 16384
|
|
#define IPXRCVQ 40960
|
|
|
|
#ifdef _KERNEL
|
|
int ipx_pcballoc(struct socket *so, struct ipxpcbhead *head,
|
|
struct thread *p);
|
|
int ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam,
|
|
struct thread *p);
|
|
int ipx_pcbconnect(struct ipxpcb *ipxp, struct sockaddr *nam,
|
|
struct thread *p);
|
|
void ipx_pcbdetach(struct ipxpcb *ipxp);
|
|
void ipx_pcbdisconnect(struct ipxpcb *ipxp);
|
|
void ipx_pcbfree(struct ipxpcb *ipxp);
|
|
struct ipxpcb *
|
|
ipx_pcblookup(struct ipx_addr *faddr, int lport, int wildp);
|
|
void ipx_setpeeraddr(struct ipxpcb *ipxp, struct sockaddr **nam);
|
|
void ipx_setsockaddr(struct ipxpcb *ipxp, struct sockaddr **nam);
|
|
|
|
#define IPX_LIST_LOCK_INIT() mtx_init(&ipxpcb_list_mtx, "ipx_list_mtx", \
|
|
NULL, MTX_DEF | MTX_RECURSE)
|
|
#define IPX_LIST_LOCK() mtx_lock(&ipxpcb_list_mtx)
|
|
#define IPX_LIST_UNLOCK() mtx_unlock(&ipxpcb_list_mtx)
|
|
#define IPX_LIST_LOCK_ASSERT() mtx_assert(&ipxpcb_list_mtx, MA_OWNED)
|
|
|
|
#define IPX_LOCK_INIT(ipx) mtx_init(&(ipx)->ipxp_mtx, "ipx_mtx", NULL, \
|
|
MTX_DEF)
|
|
#define IPX_LOCK_DESTROY(ipx) mtx_destroy(&(ipx)->ipxp_mtx)
|
|
#define IPX_LOCK(ipx) mtx_lock(&(ipx)->ipxp_mtx)
|
|
#define IPX_UNLOCK(ipx) mtx_unlock(&(ipx)->ipxp_mtx)
|
|
#define IPX_LOCK_ASSERT(ipx) mtx_assert(&(ipx)->ipxp_mtx, MA_OWNED)
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_NETIPX_IPX_PCB_H_ */
|