5493f188c7
parentheses in return statements.
Cosmetic: don't open-code TAILQ_FOREACH().
Cosmetic: change types of variables to avoid oodles of casts: in
in6_src.c, avoid casts by changing several route_in6 pointers
to struct route pointers. Remove unnecessary casts to caddr_t
elsewhere.
Pave the way for eliminating address family-specific route caches:
soon, struct route will not embed a sockaddr, but it will hold
a reference to an external sockaddr, instead. We will set the
destination sockaddr using rtcache_setdst(). (I created a stub
for it, but it isn't used anywhere, yet.) rtcache_free() will
free the sockaddr. I have extracted from rtcache_free() a helper
subroutine, rtcache_clear(). rtcache_clear() will "forget" a
cached route, but it will not forget the destination by releasing
the sockaddr. I use rtcache_clear() instead of rtcache_free()
in rtcache_update(), because rtcache_update() is not supposed
to forget the destination.
Constify:
1 Introduce const accessor for route->ro_dst, rtcache_getdst().
2 Constify the 'dst' argument to ifnet->if_output(). This
led me to constify a lot of code called by output routines.
3 Constify the sockaddr argument to protosw->pr_ctlinput. This
led me to constify a lot of code called by ctlinput routines.
4 Introduce const macros for converting from a generic sockaddr
to family-specific sockaddrs, e.g., sockaddr_in: satocsin6,
satocsin, et cetera.
75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
/* $NetBSD: raw_cb.h,v 1.20 2007/02/17 22:34:10 dyoung Exp $ */
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/*
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)raw_cb.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef _NET_RAW_CB_H_
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#define _NET_RAW_CB_H_
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/*
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* Raw protocol interface control block. Used
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* to tie a socket to the generic raw interface.
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*/
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struct rawcb {
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LIST_ENTRY(rawcb) rcb_list; /* doubly linked list */
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struct socket *rcb_socket; /* back pointer to socket */
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struct sockaddr *rcb_faddr; /* destination address */
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struct sockaddr *rcb_laddr; /* socket's address */
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struct sockproto rcb_proto; /* protocol family, protocol */
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};
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#define sotorawcb(so) ((struct rawcb *)(so)->so_pcb)
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/*
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* Nominal space allocated to a raw socket.
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*/
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#define RAWSNDQ 8192
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#define RAWRCVQ 8192
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#ifdef _KERNEL
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LIST_HEAD(rawcbhead, rawcb);
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extern struct rawcbhead rawcb; /* head of list */
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int raw_attach(struct socket *, int);
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void *raw_ctlinput(int, const struct sockaddr *, void *);
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void raw_detach(struct rawcb *);
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void raw_disconnect(struct rawcb *);
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void raw_init(void);
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void raw_input(struct mbuf *, ...);
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int raw_usrreq(struct socket *,
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int, struct mbuf *, struct mbuf *, struct mbuf *, struct lwp *);
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void raw_setsockaddr(struct rawcb *, struct mbuf *);
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void raw_setpeeraddr(struct rawcb *, struct mbuf *);
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#endif /* _KERNEL */
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#endif /* !_NET_RAW_CB_H_ */
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