git: f63cb32c1988 - main - Retire 4.4BSD raw sockets
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Date: Thu, 11 Aug 2022 16:20:15 UTC
The branch main has been updated by glebius:
URL: https://cgit.FreeBSD.org/src/commit/?id=f63cb32c1988561136fabdcc54d16cd200b666d9
commit f63cb32c1988561136fabdcc54d16cd200b666d9
Author: Gleb Smirnoff <glebius@FreeBSD.org>
AuthorDate: 2022-08-11 16:19:36 +0000
Commit: Gleb Smirnoff <glebius@FreeBSD.org>
CommitDate: 2022-08-11 16:19:36 +0000
Retire 4.4BSD raw sockets
Until today the remnants of the original code had provided some aid
in implementation of routing socket and IPSEC key socket. There were
more obfuscation rather than generalisation with this aid.
A historical reference on the original idea of the raw sockets can
be found in chapter 11 of 4.4BSD System Manager Manual:
https://raw.githubusercontent.com/sergev/4.4BSD-Lite2/master/usr/share/doc/smm/18.net.pdf
Reviewed by: melifaro
Differential revision: https://reviews.freebsd.org/D36124
---
ObsoleteFiles.inc | 3 +
sys/conf/files | 2 -
sys/net/raw_cb.c | 120 ----------------------
sys/net/raw_cb.h | 90 -----------------
sys/net/raw_usrreq.c | 279 ---------------------------------------------------
5 files changed, 3 insertions(+), 491 deletions(-)
diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index a0964243b484..ab55b981106c 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -52,6 +52,9 @@
# xargs -n1 | sort | uniq -d;
# done
+# 202208XX: raw socket layer removed
+OLD_FILES+=usr/include/net/raw_cb.h
+
# 20220721: libnv version bumps
OLD_LIBS+=lib/libnv.so.0
diff --git a/sys/conf/files b/sys/conf/files
index 9b1ebc85a7ab..faff65dd8426 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -4164,8 +4164,6 @@ net/debugnet.c optional inet debugnet
net/debugnet_inet.c optional inet debugnet
net/pfil.c optional ether | inet
net/radix.c standard
-net/raw_cb.c standard
-net/raw_usrreq.c standard
net/route.c standard
net/route/nhgrp.c optional route_mpath
net/route/nhgrp_ctl.c optional route_mpath
diff --git a/sys/net/raw_cb.c b/sys/net/raw_cb.c
deleted file mode 100644
index 78a117a2c2d8..000000000000
--- a/sys/net/raw_cb.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1980, 1986, 1993
- * The Regents of the University of California.
- * All rights reserved.
- *
- * 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. 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.
- *
- * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93
- * $FreeBSD$
- */
-
-#include <sys/param.h>
-#include <sys/domain.h>
-#include <sys/lock.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <sys/mutex.h>
-#include <sys/protosw.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
-#include <sys/sysctl.h>
-#include <sys/systm.h>
-
-#include <net/if.h>
-#include <net/vnet.h>
-#include <net/raw_cb.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
- */
-
-struct mtx rawcb_mtx;
-VNET_DEFINE(struct rawcb_list_head, rawcb_list);
-
-static SYSCTL_NODE(_net, OID_AUTO, raw, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
- "Raw socket infrastructure");
-
-static u_long raw_sendspace = RAWSNDQ;
-SYSCTL_ULONG(_net_raw, OID_AUTO, sendspace, CTLFLAG_RW, &raw_sendspace, 0,
- "Default raw socket send space");
-
-static u_long raw_recvspace = RAWRCVQ;
-SYSCTL_ULONG(_net_raw, OID_AUTO, recvspace, CTLFLAG_RW, &raw_recvspace, 0,
- "Default raw socket receive space");
-
-/*
- * Allocate a control block and a nominal amount of buffer space for the
- * socket.
- */
-int
-raw_attach(struct socket *so, int proto)
-{
- struct rawcb *rp = sotorawcb(so);
- int error;
-
- /*
- * It is assumed that raw_attach is called after space has been
- * allocated for the rawcb; consumer protocols may simply allocate
- * type struct rawcb, or a wrapper data structure that begins with a
- * struct rawcb.
- */
- KASSERT(rp != NULL, ("raw_attach: rp == NULL"));
-
- error = soreserve(so, raw_sendspace, raw_recvspace);
- if (error)
- return (error);
- rp->rcb_socket = so;
- rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
- rp->rcb_proto.sp_protocol = proto;
- mtx_lock(&rawcb_mtx);
- LIST_INSERT_HEAD(&V_rawcb_list, rp, list);
- mtx_unlock(&rawcb_mtx);
- return (0);
-}
-
-/*
- * Detach the raw connection block and discard socket resources.
- */
-void
-raw_detach(struct rawcb *rp)
-{
- struct socket *so = rp->rcb_socket;
-
- KASSERT(so->so_pcb == rp, ("raw_detach: so_pcb != rp"));
-
- so->so_pcb = NULL;
- mtx_lock(&rawcb_mtx);
- LIST_REMOVE(rp, list);
- mtx_unlock(&rawcb_mtx);
- free((caddr_t)(rp), M_PCB);
-}
diff --git a/sys/net/raw_cb.h b/sys/net/raw_cb.h
deleted file mode 100644
index 3356a86d5464..000000000000
--- a/sys/net/raw_cb.h
+++ /dev/null
@@ -1,90 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1980, 1986, 1993
- * The Regents of the University of California.
- * All rights reserved.
- *
- * 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. 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.
- *
- * @(#)raw_cb.h 8.1 (Berkeley) 6/10/93
- * $FreeBSD$
- */
-
-#ifndef _NET_RAW_CB_H_
-#define _NET_RAW_CB_H_
-
-#include <sys/queue.h>
-
-/*
- * Raw protocol interface control block. Used to tie a socket to the generic
- * raw interface.
- */
-struct rawcb {
- LIST_ENTRY(rawcb) list;
- struct socket *rcb_socket; /* back pointer to socket */
- struct sockproto rcb_proto; /* protocol family, protocol */
-};
-
-#define sotorawcb(so) ((struct rawcb *)(so)->so_pcb)
-
-/*
- * Nominal space allocated to a raw socket.
- */
-#define RAWSNDQ 8192
-#define RAWRCVQ 8192
-
-#ifdef _KERNEL
-VNET_DECLARE(LIST_HEAD(rawcb_list_head, rawcb), rawcb_list);
-#define V_rawcb_list VNET(rawcb_list)
-
-extern struct mtx rawcb_mtx;
-
-/*
- * Generic protosw entries for raw socket protocols.
- */
-pr_ctlinput_t raw_ctlinput;
-
-/*
- * Library routines for raw socket usrreq functions; will always be wrapped
- * so that protocol-specific functions can be handled.
- */
-typedef int (*raw_input_cb_fn)(struct mbuf *, struct sockproto *,
- struct sockaddr *, struct rawcb *);
-
-int raw_attach(struct socket *, int);
-void raw_detach(struct rawcb *);
-void raw_input(struct mbuf *, struct sockproto *, struct sockaddr *);
-void raw_input_ext(struct mbuf *, struct sockproto *, struct sockaddr *,
- raw_input_cb_fn);
-
-/*
- * Generic pr_usrreqs entries for raw socket protocols, usually wrapped so
- * that protocol-specific functions can be handled.
- */
-extern struct pr_usrreqs raw_usrreqs;
-#endif
-
-#endif
diff --git a/sys/net/raw_usrreq.c b/sys/net/raw_usrreq.c
deleted file mode 100644
index f51334cf81fa..000000000000
--- a/sys/net/raw_usrreq.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1980, 1986, 1993
- * The Regents of the University of California.
- * All rights reserved.
- *
- * 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. 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.
- *
- * @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
- * $FreeBSD$
- */
-
-#include <sys/param.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/malloc.h>
-#include <sys/mbuf.h>
-#include <sys/mutex.h>
-#include <sys/priv.h>
-#include <sys/protosw.h>
-#include <sys/signalvar.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
-#include <sys/sx.h>
-#include <sys/systm.h>
-
-#include <net/if.h>
-#include <net/vnet.h>
-#include <net/raw_cb.h>
-
-MTX_SYSINIT(rawcb_mtx, &rawcb_mtx, "rawcb", MTX_DEF);
-
-/*
- * Initialize raw connection block q.
- */
-static void
-raw_init(void *arg __unused)
-{
-
- LIST_INIT(&V_rawcb_list);
-}
-VNET_SYSINIT(raw_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, raw_init, NULL);
-
-/*
- * Raw protocol input routine. Find the socket associated with the packet(s)
- * and move them over. If nothing exists for this packet, drop it.
- */
-/*
- * Raw protocol interface.
- */
-void
-raw_input(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src)
-{
-
- return (raw_input_ext(m0, proto, src, NULL));
-}
-
-void
-raw_input_ext(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src,
- raw_input_cb_fn cb)
-{
- struct rawcb *rp;
- struct mbuf *m = m0;
- struct socket *last;
-
- last = NULL;
- mtx_lock(&rawcb_mtx);
- LIST_FOREACH(rp, &V_rawcb_list, list) {
- if (rp->rcb_proto.sp_family != proto->sp_family)
- continue;
- if (rp->rcb_proto.sp_protocol &&
- rp->rcb_proto.sp_protocol != proto->sp_protocol)
- continue;
- if (cb != NULL && (*cb)(m, proto, src, rp) != 0)
- continue;
- if (last) {
- struct mbuf *n;
- n = m_copym(m, 0, M_COPYALL, M_NOWAIT);
- if (n) {
- if (sbappendaddr(&last->so_rcv, src,
- n, (struct mbuf *)0) == 0) {
- soroverflow(last);
- m_freem(n);
- } else
- sorwakeup(last);
- }
- }
- last = rp->rcb_socket;
- }
- if (last) {
- if (sbappendaddr(&last->so_rcv, src,
- m, (struct mbuf *)0) == 0) {
- soroverflow(last);
- m_freem(m);
- } else
- sorwakeup(last);
- } else
- m_freem(m);
- mtx_unlock(&rawcb_mtx);
-}
-
-/*ARGSUSED*/
-void
-raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy)
-{
-
- if (cmd < 0 || cmd >= PRC_NCMDS)
- return;
- /* INCOMPLETE */
-}
-
-static void
-raw_uabort(struct socket *so)
-{
-
- KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL"));
-
- soisdisconnected(so);
-}
-
-static void
-raw_uclose(struct socket *so)
-{
-
- KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL"));
-
- soisdisconnected(so);
-}
-
-/* pru_accept is EOPNOTSUPP */
-
-static int
-raw_uattach(struct socket *so, int proto, struct thread *td)
-{
- int error;
-
- /*
- * Implementors of raw sockets will already have allocated the PCB,
- * so it must be non-NULL here.
- */
- KASSERT(sotorawcb(so) != NULL, ("raw_uattach: so_pcb == NULL"));
-
- if (td != NULL) {
- error = priv_check(td, PRIV_NET_RAW);
- if (error)
- return (error);
- }
- return (raw_attach(so, proto));
-}
-
-static int
-raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
-{
-
- return (EINVAL);
-}
-
-static int
-raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
-{
-
- return (EINVAL);
-}
-
-/* pru_connect2 is EOPNOTSUPP */
-/* pru_control is EOPNOTSUPP */
-
-static void
-raw_udetach(struct socket *so)
-{
- struct rawcb *rp = sotorawcb(so);
-
- KASSERT(rp != NULL, ("raw_udetach: rp == NULL"));
-
- raw_detach(rp);
-}
-
-static int
-raw_udisconnect(struct socket *so)
-{
-
- KASSERT(sotorawcb(so) != NULL, ("raw_udisconnect: rp == NULL"));
-
- return (ENOTCONN);
-}
-
-/* pru_listen is EOPNOTSUPP */
-
-static int
-raw_upeeraddr(struct socket *so, struct sockaddr **nam)
-{
-
- KASSERT(sotorawcb(so) != NULL, ("raw_upeeraddr: rp == NULL"));
-
- return (ENOTCONN);
-}
-
-/* pru_rcvd is EOPNOTSUPP */
-/* pru_rcvoob is EOPNOTSUPP */
-
-static int
-raw_usend(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
- struct mbuf *control, struct thread *td)
-{
-
- KASSERT(sotorawcb(so) != NULL, ("raw_usend: rp == NULL"));
-
- if ((flags & PRUS_OOB) || (control && control->m_len)) {
- if (m != NULL)
- m_freem(m);
- if (control != NULL)
- m_freem(control);
- return (EOPNOTSUPP);
- }
-
- /*
- * For historical (bad?) reasons, we effectively ignore the address
- * argument to sendto(2). Perhaps we should return an error instead?
- */
- return ((*so->so_proto->pr_output)(m, so));
-}
-
-/* pru_sense is null */
-
-static int
-raw_ushutdown(struct socket *so)
-{
-
- KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL"));
-
- socantsendmore(so);
- return (0);
-}
-
-static int
-raw_usockaddr(struct socket *so, struct sockaddr **nam)
-{
-
- KASSERT(sotorawcb(so) != NULL, ("raw_usockaddr: rp == NULL"));
-
- return (EINVAL);
-}
-
-struct pr_usrreqs raw_usrreqs = {
- .pru_abort = raw_uabort,
- .pru_attach = raw_uattach,
- .pru_bind = raw_ubind,
- .pru_connect = raw_uconnect,
- .pru_detach = raw_udetach,
- .pru_disconnect = raw_udisconnect,
- .pru_peeraddr = raw_upeeraddr,
- .pru_send = raw_usend,
- .pru_shutdown = raw_ushutdown,
- .pru_sockaddr = raw_usockaddr,
- .pru_close = raw_uclose,
-};