additional arguments - buffer and size of this buffer. ipsec_address() is used to convert sockaddr structure to presentation format. The IPv6 part of this function returns pointer to the on-stack buffer and at the moment when it will be used by caller, it becames invalid. IPv4 version uses 4 static buffers and returns pointer to new buffer each time when it called. But anyway it is still possible to get corrupted data when several threads will use this function. ipsec_logsastr() is used to format string about SA entry. It also uses static buffer and has the same problem with concurrent threads. To fix these problems add the buffer pointer and size of this buffer to arguments. Now each caller will pass buffer and its size to these functions. Also convert all places where these functions are used (except disabled code). And now ipsec_address() uses inet_ntop() function from libkern. PR: 185996 Differential Revision: https://reviews.freebsd.org/D2321 Reviewed by: gnn Sponsored by: Yandex LLC
635 lines
17 KiB
C
635 lines
17 KiB
C
/* $FreeBSD$ */
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/* $OpenBSD: ip_ipcomp.c,v 1.1 2001/07/05 12:08:52 jjbg Exp $ */
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/*-
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* Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
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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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*
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* IP payload compression protocol (IPComp), see RFC 2393 */
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#include "opt_inet.h"
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#include "opt_inet6.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/rwlock.h>
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#include <sys/socket.h>
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#include <sys/kernel.h>
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#include <sys/protosw.h>
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#include <sys/sysctl.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#include <net/vnet.h>
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#include <netipsec/ipsec.h>
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#include <netipsec/xform.h>
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#ifdef INET6
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#include <netinet/ip6.h>
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#include <netipsec/ipsec6.h>
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#endif
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#include <netipsec/ipcomp.h>
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#include <netipsec/ipcomp_var.h>
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#include <netipsec/key.h>
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#include <netipsec/key_debug.h>
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#include <opencrypto/cryptodev.h>
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#include <opencrypto/deflate.h>
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#include <opencrypto/xform.h>
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VNET_DEFINE(int, ipcomp_enable) = 1;
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VNET_PCPUSTAT_DEFINE(struct ipcompstat, ipcompstat);
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VNET_PCPUSTAT_SYSINIT(ipcompstat);
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#ifdef VIMAGE
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VNET_PCPUSTAT_SYSUNINIT(ipcompstat);
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#endif /* VIMAGE */
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SYSCTL_DECL(_net_inet_ipcomp);
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SYSCTL_INT(_net_inet_ipcomp, OID_AUTO, ipcomp_enable,
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipcomp_enable), 0, "");
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SYSCTL_VNET_PCPUSTAT(_net_inet_ipcomp, IPSECCTL_STATS, stats,
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struct ipcompstat, ipcompstat,
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"IPCOMP statistics (struct ipcompstat, netipsec/ipcomp_var.h");
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static int ipcomp_input_cb(struct cryptop *crp);
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static int ipcomp_output_cb(struct cryptop *crp);
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struct comp_algo *
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ipcomp_algorithm_lookup(int alg)
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{
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if (alg >= IPCOMP_ALG_MAX)
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return NULL;
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switch (alg) {
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case SADB_X_CALG_DEFLATE:
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return &comp_algo_deflate;
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}
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return NULL;
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}
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/*
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* ipcomp_init() is called when an CPI is being set up.
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*/
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static int
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ipcomp_init(struct secasvar *sav, struct xformsw *xsp)
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{
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struct comp_algo *tcomp;
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struct cryptoini cric;
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/* NB: algorithm really comes in alg_enc and not alg_comp! */
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tcomp = ipcomp_algorithm_lookup(sav->alg_enc);
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if (tcomp == NULL) {
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DPRINTF(("%s: unsupported compression algorithm %d\n", __func__,
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sav->alg_comp));
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return EINVAL;
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}
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sav->alg_comp = sav->alg_enc; /* set for doing histogram */
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sav->tdb_xform = xsp;
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sav->tdb_compalgxform = tcomp;
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/* Initialize crypto session */
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bzero(&cric, sizeof (cric));
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cric.cri_alg = sav->tdb_compalgxform->type;
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return crypto_newsession(&sav->tdb_cryptoid, &cric, V_crypto_support);
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}
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/*
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* ipcomp_zeroize() used when IPCA is deleted
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*/
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static int
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ipcomp_zeroize(struct secasvar *sav)
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{
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int err;
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err = crypto_freesession(sav->tdb_cryptoid);
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sav->tdb_cryptoid = 0;
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return err;
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}
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/*
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* ipcomp_input() gets called to uncompress an input packet
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*/
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static int
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ipcomp_input(struct mbuf *m, struct secasvar *sav, int skip, int protoff)
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{
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struct tdb_crypto *tc;
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struct cryptodesc *crdc;
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struct cryptop *crp;
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struct ipcomp *ipcomp;
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caddr_t addr;
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int hlen = IPCOMP_HLENGTH;
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/*
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* Check that the next header of the IPComp is not IPComp again, before
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* doing any real work. Given it is not possible to do double
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* compression it means someone is playing tricks on us.
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*/
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if (m->m_len < skip + hlen && (m = m_pullup(m, skip + hlen)) == NULL) {
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IPCOMPSTAT_INC(ipcomps_hdrops); /*XXX*/
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DPRINTF(("%s: m_pullup failed\n", __func__));
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return (ENOBUFS);
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}
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addr = (caddr_t) mtod(m, struct ip *) + skip;
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ipcomp = (struct ipcomp *)addr;
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if (ipcomp->comp_nxt == IPPROTO_IPCOMP) {
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m_freem(m);
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IPCOMPSTAT_INC(ipcomps_pdrops); /* XXX have our own stats? */
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DPRINTF(("%s: recursive compression detected\n", __func__));
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return (EINVAL);
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}
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/* Get crypto descriptors */
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crp = crypto_getreq(1);
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if (crp == NULL) {
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m_freem(m);
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DPRINTF(("%s: no crypto descriptors\n", __func__));
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IPCOMPSTAT_INC(ipcomps_crypto);
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return ENOBUFS;
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}
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/* Get IPsec-specific opaque pointer */
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tc = (struct tdb_crypto *) malloc(sizeof (*tc), M_XDATA, M_NOWAIT|M_ZERO);
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if (tc == NULL) {
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m_freem(m);
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crypto_freereq(crp);
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DPRINTF(("%s: cannot allocate tdb_crypto\n", __func__));
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IPCOMPSTAT_INC(ipcomps_crypto);
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return ENOBUFS;
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}
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crdc = crp->crp_desc;
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crdc->crd_skip = skip + hlen;
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crdc->crd_len = m->m_pkthdr.len - (skip + hlen);
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crdc->crd_inject = skip;
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tc->tc_ptr = 0;
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/* Decompression operation */
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crdc->crd_alg = sav->tdb_compalgxform->type;
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/* Crypto operation descriptor */
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crp->crp_ilen = m->m_pkthdr.len - (skip + hlen);
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crp->crp_flags = CRYPTO_F_IMBUF | CRYPTO_F_CBIFSYNC;
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crp->crp_buf = (caddr_t) m;
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crp->crp_callback = ipcomp_input_cb;
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crp->crp_sid = sav->tdb_cryptoid;
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crp->crp_opaque = (caddr_t) tc;
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/* These are passed as-is to the callback */
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tc->tc_spi = sav->spi;
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tc->tc_dst = sav->sah->saidx.dst;
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tc->tc_proto = sav->sah->saidx.proto;
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tc->tc_protoff = protoff;
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tc->tc_skip = skip;
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KEY_ADDREFSA(sav);
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tc->tc_sav = sav;
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return crypto_dispatch(crp);
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}
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/*
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* IPComp input callback from the crypto driver.
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*/
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static int
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ipcomp_input_cb(struct cryptop *crp)
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{
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char buf[INET6_ADDRSTRLEN];
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struct cryptodesc *crd;
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struct tdb_crypto *tc;
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int skip, protoff;
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struct mbuf *m;
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struct secasvar *sav;
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struct secasindex *saidx;
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int hlen = IPCOMP_HLENGTH, error, clen;
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u_int8_t nproto;
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caddr_t addr;
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crd = crp->crp_desc;
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tc = (struct tdb_crypto *) crp->crp_opaque;
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IPSEC_ASSERT(tc != NULL, ("null opaque crypto data area!"));
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skip = tc->tc_skip;
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protoff = tc->tc_protoff;
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m = (struct mbuf *) crp->crp_buf;
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sav = tc->tc_sav;
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IPSEC_ASSERT(sav != NULL, ("null SA!"));
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saidx = &sav->sah->saidx;
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IPSEC_ASSERT(saidx->dst.sa.sa_family == AF_INET ||
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saidx->dst.sa.sa_family == AF_INET6,
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("unexpected protocol family %u", saidx->dst.sa.sa_family));
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/* Check for crypto errors */
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if (crp->crp_etype) {
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/* Reset the session ID */
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if (sav->tdb_cryptoid != 0)
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sav->tdb_cryptoid = crp->crp_sid;
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if (crp->crp_etype == EAGAIN) {
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return crypto_dispatch(crp);
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}
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IPCOMPSTAT_INC(ipcomps_noxform);
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DPRINTF(("%s: crypto error %d\n", __func__, crp->crp_etype));
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error = crp->crp_etype;
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goto bad;
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}
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/* Shouldn't happen... */
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if (m == NULL) {
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IPCOMPSTAT_INC(ipcomps_crypto);
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DPRINTF(("%s: null mbuf returned from crypto\n", __func__));
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error = EINVAL;
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goto bad;
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}
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IPCOMPSTAT_INC(ipcomps_hist[sav->alg_comp]);
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clen = crp->crp_olen; /* Length of data after processing */
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/* Release the crypto descriptors */
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free(tc, M_XDATA), tc = NULL;
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crypto_freereq(crp), crp = NULL;
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/* In case it's not done already, adjust the size of the mbuf chain */
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m->m_pkthdr.len = clen + hlen + skip;
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if (m->m_len < skip + hlen && (m = m_pullup(m, skip + hlen)) == 0) {
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IPCOMPSTAT_INC(ipcomps_hdrops); /*XXX*/
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DPRINTF(("%s: m_pullup failed\n", __func__));
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error = EINVAL; /*XXX*/
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goto bad;
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}
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/* Keep the next protocol field */
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addr = (caddr_t) mtod(m, struct ip *) + skip;
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nproto = ((struct ipcomp *) addr)->comp_nxt;
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/* Remove the IPCOMP header */
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error = m_striphdr(m, skip, hlen);
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if (error) {
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IPCOMPSTAT_INC(ipcomps_hdrops);
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DPRINTF(("%s: bad mbuf chain, IPCA %s/%08lx\n", __func__,
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ipsec_address(&sav->sah->saidx.dst, buf, sizeof(buf)),
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(u_long) ntohl(sav->spi)));
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goto bad;
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}
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/* Restore the Next Protocol field */
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m_copyback(m, protoff, sizeof (u_int8_t), (u_int8_t *) &nproto);
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switch (saidx->dst.sa.sa_family) {
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#ifdef INET6
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case AF_INET6:
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error = ipsec6_common_input_cb(m, sav, skip, protoff);
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break;
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#endif
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#ifdef INET
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case AF_INET:
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error = ipsec4_common_input_cb(m, sav, skip, protoff);
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break;
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#endif
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default:
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panic("%s: Unexpected address family: %d saidx=%p", __func__,
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saidx->dst.sa.sa_family, saidx);
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}
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KEY_FREESAV(&sav);
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return error;
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bad:
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if (sav)
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KEY_FREESAV(&sav);
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if (m)
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m_freem(m);
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if (tc != NULL)
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free(tc, M_XDATA);
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if (crp)
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crypto_freereq(crp);
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return error;
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}
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/*
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* IPComp output routine, called by ipsec[46]_process_packet()
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*/
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static int
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ipcomp_output(struct mbuf *m, struct ipsecrequest *isr, struct mbuf **mp,
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int skip, int protoff)
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{
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char buf[INET6_ADDRSTRLEN];
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struct secasvar *sav;
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struct comp_algo *ipcompx;
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int error, ralen, maxpacketsize;
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struct cryptodesc *crdc;
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struct cryptop *crp;
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struct tdb_crypto *tc;
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sav = isr->sav;
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IPSEC_ASSERT(sav != NULL, ("null SA"));
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ipcompx = sav->tdb_compalgxform;
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IPSEC_ASSERT(ipcompx != NULL, ("null compression xform"));
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/*
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* Do not touch the packet in case our payload to compress
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* is lower than the minimal threshold of the compression
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* alogrithm. We will just send out the data uncompressed.
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* See RFC 3173, 2.2. Non-Expansion Policy.
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*/
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if (m->m_pkthdr.len <= ipcompx->minlen) {
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IPCOMPSTAT_INC(ipcomps_threshold);
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return ipsec_process_done(m, isr);
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}
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ralen = m->m_pkthdr.len - skip; /* Raw payload length before comp. */
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IPCOMPSTAT_INC(ipcomps_output);
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/* Check for maximum packet size violations. */
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switch (sav->sah->saidx.dst.sa.sa_family) {
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#ifdef INET
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case AF_INET:
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maxpacketsize = IP_MAXPACKET;
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break;
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#endif /* INET */
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#ifdef INET6
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case AF_INET6:
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maxpacketsize = IPV6_MAXPACKET;
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break;
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#endif /* INET6 */
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default:
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IPCOMPSTAT_INC(ipcomps_nopf);
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DPRINTF(("%s: unknown/unsupported protocol family %d, "
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"IPCA %s/%08lx\n", __func__,
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sav->sah->saidx.dst.sa.sa_family,
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ipsec_address(&sav->sah->saidx.dst, buf, sizeof(buf)),
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(u_long) ntohl(sav->spi)));
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error = EPFNOSUPPORT;
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goto bad;
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}
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if (ralen + skip + IPCOMP_HLENGTH > maxpacketsize) {
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IPCOMPSTAT_INC(ipcomps_toobig);
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DPRINTF(("%s: packet in IPCA %s/%08lx got too big "
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"(len %u, max len %u)\n", __func__,
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ipsec_address(&sav->sah->saidx.dst, buf, sizeof(buf)),
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(u_long) ntohl(sav->spi),
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ralen + skip + IPCOMP_HLENGTH, maxpacketsize));
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error = EMSGSIZE;
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goto bad;
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}
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/* Update the counters */
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IPCOMPSTAT_ADD(ipcomps_obytes, m->m_pkthdr.len - skip);
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m = m_unshare(m, M_NOWAIT);
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if (m == NULL) {
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IPCOMPSTAT_INC(ipcomps_hdrops);
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DPRINTF(("%s: cannot clone mbuf chain, IPCA %s/%08lx\n",
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__func__, ipsec_address(&sav->sah->saidx.dst, buf,
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sizeof(buf)), (u_long) ntohl(sav->spi)));
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error = ENOBUFS;
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goto bad;
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|
}
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/* Ok now, we can pass to the crypto processing. */
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|
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/* Get crypto descriptors */
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crp = crypto_getreq(1);
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if (crp == NULL) {
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IPCOMPSTAT_INC(ipcomps_crypto);
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DPRINTF(("%s: failed to acquire crypto descriptor\n",__func__));
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|
error = ENOBUFS;
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goto bad;
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|
}
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crdc = crp->crp_desc;
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|
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/* Compression descriptor */
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crdc->crd_skip = skip;
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crdc->crd_len = ralen;
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crdc->crd_flags = CRD_F_COMP;
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crdc->crd_inject = skip;
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/* Compression operation */
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crdc->crd_alg = ipcompx->type;
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|
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/* IPsec-specific opaque crypto info */
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tc = (struct tdb_crypto *) malloc(sizeof(struct tdb_crypto),
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M_XDATA, M_NOWAIT|M_ZERO);
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if (tc == NULL) {
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IPCOMPSTAT_INC(ipcomps_crypto);
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DPRINTF(("%s: failed to allocate tdb_crypto\n", __func__));
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crypto_freereq(crp);
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error = ENOBUFS;
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goto bad;
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}
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|
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tc->tc_isr = isr;
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KEY_ADDREFSA(sav);
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tc->tc_sav = sav;
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tc->tc_spi = sav->spi;
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tc->tc_dst = sav->sah->saidx.dst;
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tc->tc_proto = sav->sah->saidx.proto;
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tc->tc_protoff = protoff;
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tc->tc_skip = skip;
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/* Crypto operation descriptor */
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crp->crp_ilen = m->m_pkthdr.len; /* Total input length */
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crp->crp_flags = CRYPTO_F_IMBUF | CRYPTO_F_CBIFSYNC;
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crp->crp_buf = (caddr_t) m;
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crp->crp_callback = ipcomp_output_cb;
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crp->crp_opaque = (caddr_t) tc;
|
|
crp->crp_sid = sav->tdb_cryptoid;
|
|
|
|
return crypto_dispatch(crp);
|
|
bad:
|
|
if (m)
|
|
m_freem(m);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* IPComp output callback from the crypto driver.
|
|
*/
|
|
static int
|
|
ipcomp_output_cb(struct cryptop *crp)
|
|
{
|
|
char buf[INET6_ADDRSTRLEN];
|
|
struct tdb_crypto *tc;
|
|
struct ipsecrequest *isr;
|
|
struct secasvar *sav;
|
|
struct mbuf *m;
|
|
int error, skip;
|
|
|
|
tc = (struct tdb_crypto *) crp->crp_opaque;
|
|
IPSEC_ASSERT(tc != NULL, ("null opaque data area!"));
|
|
m = (struct mbuf *) crp->crp_buf;
|
|
skip = tc->tc_skip;
|
|
|
|
isr = tc->tc_isr;
|
|
IPSECREQUEST_LOCK(isr);
|
|
sav = tc->tc_sav;
|
|
/* With the isr lock released SA pointer can be updated. */
|
|
if (sav != isr->sav) {
|
|
IPCOMPSTAT_INC(ipcomps_notdb);
|
|
DPRINTF(("%s: SA expired while in crypto\n", __func__));
|
|
error = ENOBUFS; /*XXX*/
|
|
goto bad;
|
|
}
|
|
|
|
/* Check for crypto errors */
|
|
if (crp->crp_etype) {
|
|
/* Reset the session ID */
|
|
if (sav->tdb_cryptoid != 0)
|
|
sav->tdb_cryptoid = crp->crp_sid;
|
|
|
|
if (crp->crp_etype == EAGAIN) {
|
|
IPSECREQUEST_UNLOCK(isr);
|
|
return crypto_dispatch(crp);
|
|
}
|
|
IPCOMPSTAT_INC(ipcomps_noxform);
|
|
DPRINTF(("%s: crypto error %d\n", __func__, crp->crp_etype));
|
|
error = crp->crp_etype;
|
|
goto bad;
|
|
}
|
|
/* Shouldn't happen... */
|
|
if (m == NULL) {
|
|
IPCOMPSTAT_INC(ipcomps_crypto);
|
|
DPRINTF(("%s: bogus return buffer from crypto\n", __func__));
|
|
error = EINVAL;
|
|
goto bad;
|
|
}
|
|
IPCOMPSTAT_INC(ipcomps_hist[sav->alg_comp]);
|
|
|
|
if (crp->crp_ilen - skip > crp->crp_olen) {
|
|
struct mbuf *mo;
|
|
struct ipcomp *ipcomp;
|
|
int roff;
|
|
uint8_t prot;
|
|
|
|
/* Compression helped, inject IPCOMP header. */
|
|
mo = m_makespace(m, skip, IPCOMP_HLENGTH, &roff);
|
|
if (mo == NULL) {
|
|
IPCOMPSTAT_INC(ipcomps_wrap);
|
|
DPRINTF(("%s: IPCOMP header inject failed for IPCA %s/%08lx\n",
|
|
__func__, ipsec_address(&sav->sah->saidx.dst, buf,
|
|
sizeof(buf)), (u_long) ntohl(sav->spi)));
|
|
error = ENOBUFS;
|
|
goto bad;
|
|
}
|
|
ipcomp = (struct ipcomp *)(mtod(mo, caddr_t) + roff);
|
|
|
|
/* Initialize the IPCOMP header */
|
|
/* XXX alignment always correct? */
|
|
switch (sav->sah->saidx.dst.sa.sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
ipcomp->comp_nxt = mtod(m, struct ip *)->ip_p;
|
|
break;
|
|
#endif /* INET */
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
ipcomp->comp_nxt = mtod(m, struct ip6_hdr *)->ip6_nxt;
|
|
break;
|
|
#endif
|
|
}
|
|
ipcomp->comp_flags = 0;
|
|
ipcomp->comp_cpi = htons((u_int16_t) ntohl(sav->spi));
|
|
|
|
/* Fix Next Protocol in IPv4/IPv6 header */
|
|
prot = IPPROTO_IPCOMP;
|
|
m_copyback(m, tc->tc_protoff, sizeof(u_int8_t),
|
|
(u_char *)&prot);
|
|
|
|
/* Adjust the length in the IP header */
|
|
switch (sav->sah->saidx.dst.sa.sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
mtod(m, struct ip *)->ip_len = htons(m->m_pkthdr.len);
|
|
break;
|
|
#endif /* INET */
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
mtod(m, struct ip6_hdr *)->ip6_plen =
|
|
htons(m->m_pkthdr.len) - sizeof(struct ip6_hdr);
|
|
break;
|
|
#endif /* INET6 */
|
|
default:
|
|
IPCOMPSTAT_INC(ipcomps_nopf);
|
|
DPRINTF(("%s: unknown/unsupported protocol "
|
|
"family %d, IPCA %s/%08lx\n", __func__,
|
|
sav->sah->saidx.dst.sa.sa_family,
|
|
ipsec_address(&sav->sah->saidx.dst, buf,
|
|
sizeof(buf)), (u_long) ntohl(sav->spi)));
|
|
error = EPFNOSUPPORT;
|
|
goto bad;
|
|
}
|
|
} else {
|
|
/* Compression was useless, we have lost time. */
|
|
IPCOMPSTAT_INC(ipcomps_uncompr);
|
|
DPRINTF(("%s: compressions was useless %d - %d <= %d\n",
|
|
__func__, crp->crp_ilen, skip, crp->crp_olen));
|
|
/* XXX remember state to not compress the next couple
|
|
* of packets, RFC 3173, 2.2. Non-Expansion Policy */
|
|
}
|
|
|
|
/* Release the crypto descriptor */
|
|
free(tc, M_XDATA);
|
|
crypto_freereq(crp);
|
|
|
|
/* NB: m is reclaimed by ipsec_process_done. */
|
|
error = ipsec_process_done(m, isr);
|
|
KEY_FREESAV(&sav);
|
|
IPSECREQUEST_UNLOCK(isr);
|
|
return error;
|
|
bad:
|
|
if (sav)
|
|
KEY_FREESAV(&sav);
|
|
IPSECREQUEST_UNLOCK(isr);
|
|
if (m)
|
|
m_freem(m);
|
|
free(tc, M_XDATA);
|
|
crypto_freereq(crp);
|
|
return error;
|
|
}
|
|
|
|
static struct xformsw ipcomp_xformsw = {
|
|
XF_IPCOMP, XFT_COMP, "IPcomp",
|
|
ipcomp_init, ipcomp_zeroize, ipcomp_input,
|
|
ipcomp_output
|
|
};
|
|
|
|
static void
|
|
ipcomp_attach(void)
|
|
{
|
|
|
|
xform_register(&ipcomp_xformsw);
|
|
}
|
|
|
|
SYSINIT(ipcomp_xform_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_MIDDLE, ipcomp_attach, NULL);
|