2005-01-07 01:45:51 +00:00
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/*-
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2017-11-20 19:43:44 +00:00
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* SPDX-License-Identifier: BSD-3-Clause
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*
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1994-05-24 10:09:53 +00:00
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* Copyright (c) 1980, 1986, 1993
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2008-07-05 18:03:39 +00:00
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* The Regents of the University of California.
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* All rights reserved.
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1994-05-24 10:09:53 +00:00
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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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2017-02-28 23:42:47 +00:00
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* 3. Neither the name of the University nor the names of its contributors
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1994-05-24 10:09:53 +00:00
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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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1999-08-28 01:08:13 +00:00
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* $FreeBSD$
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1994-05-24 10:09:53 +00:00
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*/
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1994-08-21 05:11:48 +00:00
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#ifndef _NET_RAW_CB_H_
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#define _NET_RAW_CB_H_
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1998-02-03 22:19:35 +00:00
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#include <sys/queue.h>
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1994-05-24 10:09:53 +00:00
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/*
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2008-07-05 18:03:39 +00:00
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* Raw protocol interface control block. Used to tie a socket to the generic
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* raw interface.
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1994-05-24 10:09:53 +00:00
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*/
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struct rawcb {
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2000-05-26 02:09:24 +00:00
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LIST_ENTRY(rawcb) list;
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1994-05-24 10:09:53 +00:00
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struct socket *rcb_socket; /* back pointer to socket */
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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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1999-12-29 04:46:21 +00:00
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#ifdef _KERNEL
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Build on Jeff Roberson's linker-set based dynamic per-CPU allocator
(DPCPU), as suggested by Peter Wemm, and implement a new per-virtual
network stack memory allocator. Modify vnet to use the allocator
instead of monolithic global container structures (vinet, ...). This
change solves many binary compatibility problems associated with
VIMAGE, and restores ELF symbols for virtualized global variables.
Each virtualized global variable exists as a "reference copy", and also
once per virtual network stack. Virtualized global variables are
tagged at compile-time, placing the in a special linker set, which is
loaded into a contiguous region of kernel memory. Virtualized global
variables in the base kernel are linked as normal, but those in modules
are copied and relocated to a reserved portion of the kernel's vnet
region with the help of a the kernel linker.
Virtualized global variables exist in per-vnet memory set up when the
network stack instance is created, and are initialized statically from
the reference copy. Run-time access occurs via an accessor macro, which
converts from the current vnet and requested symbol to a per-vnet
address. When "options VIMAGE" is not compiled into the kernel, normal
global ELF symbols will be used instead and indirection is avoided.
This change restores static initialization for network stack global
variables, restores support for non-global symbols and types, eliminates
the need for many subsystem constructors, eliminates large per-subsystem
structures that caused many binary compatibility issues both for
monitoring applications (netstat) and kernel modules, removes the
per-function INIT_VNET_*() macros throughout the stack, eliminates the
need for vnet_symmap ksym(2) munging, and eliminates duplicate
definitions of virtualized globals under VIMAGE_GLOBALS.
Bump __FreeBSD_version and update UPDATING.
Portions submitted by: bz
Reviewed by: bz, zec
Discussed with: gnn, jamie, jeff, jhb, julian, sam
Suggested by: peter
Approved by: re (kensmith)
2009-07-14 22:48:30 +00:00
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VNET_DECLARE(LIST_HEAD(rawcb_list_head, rawcb), rawcb_list);
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2009-07-16 21:13:04 +00:00
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#define V_rawcb_list VNET(rawcb_list)
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Build on Jeff Roberson's linker-set based dynamic per-CPU allocator
(DPCPU), as suggested by Peter Wemm, and implement a new per-virtual
network stack memory allocator. Modify vnet to use the allocator
instead of monolithic global container structures (vinet, ...). This
change solves many binary compatibility problems associated with
VIMAGE, and restores ELF symbols for virtualized global variables.
Each virtualized global variable exists as a "reference copy", and also
once per virtual network stack. Virtualized global variables are
tagged at compile-time, placing the in a special linker set, which is
loaded into a contiguous region of kernel memory. Virtualized global
variables in the base kernel are linked as normal, but those in modules
are copied and relocated to a reserved portion of the kernel's vnet
region with the help of a the kernel linker.
Virtualized global variables exist in per-vnet memory set up when the
network stack instance is created, and are initialized statically from
the reference copy. Run-time access occurs via an accessor macro, which
converts from the current vnet and requested symbol to a per-vnet
address. When "options VIMAGE" is not compiled into the kernel, normal
global ELF symbols will be used instead and indirection is avoided.
This change restores static initialization for network stack global
variables, restores support for non-global symbols and types, eliminates
the need for many subsystem constructors, eliminates large per-subsystem
structures that caused many binary compatibility issues both for
monitoring applications (netstat) and kernel modules, removes the
per-function INIT_VNET_*() macros throughout the stack, eliminates the
need for vnet_symmap ksym(2) munging, and eliminates duplicate
definitions of virtualized globals under VIMAGE_GLOBALS.
Bump __FreeBSD_version and update UPDATING.
Portions submitted by: bz
Reviewed by: bz, zec
Discussed with: gnn, jamie, jeff, jhb, julian, sam
Suggested by: peter
Approved by: re (kensmith)
2009-07-14 22:48:30 +00:00
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2004-06-15 04:13:59 +00:00
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extern struct mtx rawcb_mtx;
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1994-05-24 10:09:53 +00:00
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2008-07-05 19:12:55 +00:00
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/*
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* Generic protosw entries for raw socket protocols.
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*/
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2001-09-12 08:38:13 +00:00
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pr_ctlinput_t raw_ctlinput;
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pr_init_t raw_init;
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2008-07-05 19:12:55 +00:00
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/*
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* Library routines for raw socket usrreq functions; will always be wrapped
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* so that protocol-specific functions can be handled.
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*/
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2011-09-28 13:48:36 +00:00
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typedef int (*raw_input_cb_fn)(struct mbuf *, struct sockproto *,
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struct sockaddr *, struct rawcb *);
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2002-03-19 21:54:18 +00:00
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int raw_attach(struct socket *, int);
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void raw_detach(struct rawcb *);
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Remove unused support for local and foreign addresses in generic raw
socket support. These utility routines are used only for routing and
pfkey sockets, neither of which have a notion of address, so were
required to mock up fake socket addresses to avoid connection
requirements for applications that did not specify their own fake
addresses (most of them).
Quite a bit of the removed code is #ifdef notdef, since raw sockets
don't support bind() or connect() in practice. Removing this
simplifies the raw socket implementation, and removes two (commented
out) uses of dtom(9).
Fake addresses passed to sendto(2) by applications are ignored for
compatibility reasons, but this is now done in a more consistent way
(and with a comment). Possibly, EINVAL could be returned here in
the future if it is determined that no applications depend on the
semantic inconsistency of specifying a destination address for a
protocol without address support, but this will require some amount
of careful surveying.
NB: This does not affect netinet, netinet6, or other wire protocol
raw sockets, which provide their own independent infrastructure with
control block address support specific to the protocol.
MFC after: 3 weeks
Reviewed by: bz
2008-07-09 15:48:16 +00:00
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void raw_input(struct mbuf *, struct sockproto *, struct sockaddr *);
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2011-09-28 13:48:36 +00:00
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void raw_input_ext(struct mbuf *, struct sockproto *, struct sockaddr *,
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raw_input_cb_fn);
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2001-09-12 08:38:13 +00:00
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2008-07-05 19:12:55 +00:00
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/*
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* Generic pr_usrreqs entries for raw socket protocols, usually wrapped so
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* that protocol-specific functions can be handled.
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*/
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1997-04-27 20:01:29 +00:00
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extern struct pr_usrreqs raw_usrreqs;
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1994-05-24 10:09:53 +00:00
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#endif
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1994-08-21 05:11:48 +00:00
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#endif
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