1/* $FreeBSD: head/sys/netipsec/xform_ipcomp.c 282046 2015-04-27 00:55:56Z ae $ */
2/* $OpenBSD: ip_ipcomp.c,v 1.1 2001/07/05 12:08:52 jjbg Exp $ */
3
4/*-
5 * Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:

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487 int error, skip;
488
489 tc = (struct tdb_crypto *) crp->crp_opaque;
490 IPSEC_ASSERT(tc != NULL, ("null opaque data area!"));
491 m = (struct mbuf *) crp->crp_buf;
492 skip = tc->tc_skip;
493
494 isr = tc->tc_isr;
495 IPSEC_ASSERT(isr->sp != NULL, ("NULL isr->sp"));
496 IPSECREQUEST_LOCK(isr);
497 sav = tc->tc_sav;
498 /* With the isr lock released SA pointer can be updated. */
499 if (sav != isr->sav) {
500 IPCOMPSTAT_INC(ipcomps_notdb);
501 DPRINTF(("%s: SA expired while in crypto\n", __func__));
502 error = ENOBUFS; /*XXX*/
503 goto bad;

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602 /* Release the crypto descriptor */
603 free(tc, M_XDATA);
604 crypto_freereq(crp);
605
606 /* NB: m is reclaimed by ipsec_process_done. */
607 error = ipsec_process_done(m, isr);
608 KEY_FREESAV(&sav);
609 IPSECREQUEST_UNLOCK(isr);
610 KEY_FREESP(&isr->sp);
611 return (error);
612bad:
613 if (sav)
614 KEY_FREESAV(&sav);
615 IPSECREQUEST_UNLOCK(isr);
616 KEY_FREESP(&isr->sp);
617 if (m)
618 m_freem(m);
619 free(tc, M_XDATA);
620 crypto_freereq(crp);
621 return (error);
622}
623
624static struct xformsw ipcomp_xformsw = {
625 XF_IPCOMP, XFT_COMP, "IPcomp",
626 ipcomp_init, ipcomp_zeroize, ipcomp_input,
627 ipcomp_output
628};
629
630static void
631ipcomp_attach(void)
632{
633
634 xform_register(&ipcomp_xformsw);
635}
636
637SYSINIT(ipcomp_xform_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_MIDDLE, ipcomp_attach, NULL);