Author: jhb Date: Tue Mar 20 17:05:23 2018 New Revision: 331248 URL: https://svnweb.freebsd.org/changeset/base/331248
Log: Set the proper vnet in IPsec callback functions. When using hardware crypto engines, the callback functions used to handle an IPsec packet after it has been encrypted or decrypted can be invoked asynchronously from a worker thread that is not associated with a vnet. Extend 'struct xform_data' to include a vnet pointer and save the current vnet in this new member when queueing crypto requests in IPsec. In the IPsec callback routines, use the new member to set the current vnet while processing the modified packet. This fixes a panic when using hardware offload such as ccr(4) with IPsec after VIMAGE was enabled in GENERIC. Reported by: Sony Arpita Das and Harsh Jain @ Chelsio Reviewed by: bz MFC after: 1 week Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D14763 Modified: head/sys/netipsec/xform.h head/sys/netipsec/xform_ah.c head/sys/netipsec/xform_esp.c head/sys/netipsec/xform_ipcomp.c Modified: head/sys/netipsec/xform.h ============================================================================== --- head/sys/netipsec/xform.h Tue Mar 20 16:17:55 2018 (r331247) +++ head/sys/netipsec/xform.h Tue Mar 20 17:05:23 2018 (r331248) @@ -76,6 +76,7 @@ struct xform_data { int protoff; /* current protocol offset */ int skip; /* data offset */ uint8_t nxt; /* next protocol, e.g. IPV4 */ + struct vnet *vnet; }; #define XF_IP4 1 /* unused */ Modified: head/sys/netipsec/xform_ah.c ============================================================================== --- head/sys/netipsec/xform_ah.c Tue Mar 20 16:17:55 2018 (r331247) +++ head/sys/netipsec/xform_ah.c Tue Mar 20 17:05:23 2018 (r331248) @@ -667,6 +667,7 @@ ah_input(struct mbuf *m, struct secasvar *sav, int ski xd->protoff = protoff; xd->skip = skip; xd->cryptoid = cryptoid; + xd->vnet = curvnet; return (crypto_dispatch(crp)); bad: m_freem(m); @@ -693,6 +694,7 @@ ah_input_cb(struct cryptop *crp) m = (struct mbuf *) crp->crp_buf; xd = (struct xform_data *) crp->crp_opaque; + CURVNET_SET(xd->vnet); sav = xd->sav; skip = xd->skip; nxt = xd->nxt; @@ -710,6 +712,7 @@ ah_input_cb(struct cryptop *crp) if (ipsec_updateid(sav, &crp->crp_sid, &cryptoid) != 0) crypto_freesession(cryptoid); xd->cryptoid = crp->crp_sid; + CURVNET_RESTORE(); return (crypto_dispatch(crp)); } AHSTAT_INC(ahs_noxform); @@ -805,8 +808,10 @@ ah_input_cb(struct cryptop *crp) panic("%s: Unexpected address family: %d saidx=%p", __func__, saidx->dst.sa.sa_family, saidx); } + CURVNET_RESTORE(); return error; bad: + CURVNET_RESTORE(); if (sav) key_freesav(&sav); if (m != NULL) @@ -1040,6 +1045,7 @@ ah_output(struct mbuf *m, struct secpolicy *sp, struct xd->skip = skip; xd->idx = idx; xd->cryptoid = cryptoid; + xd->vnet = curvnet; return crypto_dispatch(crp); bad: @@ -1067,6 +1073,7 @@ ah_output_cb(struct cryptop *crp) m = (struct mbuf *) crp->crp_buf; xd = (struct xform_data *) crp->crp_opaque; + CURVNET_SET(xd->vnet); sp = xd->sp; sav = xd->sav; skip = xd->skip; @@ -1081,6 +1088,7 @@ ah_output_cb(struct cryptop *crp) if (ipsec_updateid(sav, &crp->crp_sid, &cryptoid) != 0) crypto_freesession(cryptoid); xd->cryptoid = crp->crp_sid; + CURVNET_RESTORE(); return (crypto_dispatch(crp)); } AHSTAT_INC(ahs_noxform); @@ -1122,8 +1130,10 @@ ah_output_cb(struct cryptop *crp) /* NB: m is reclaimed by ipsec_process_done. */ error = ipsec_process_done(m, sp, sav, idx); + CURVNET_RESTORE(); return (error); bad: + CURVNET_RESTORE(); free(xd, M_XDATA); crypto_freereq(crp); key_freesav(&sav); Modified: head/sys/netipsec/xform_esp.c ============================================================================== --- head/sys/netipsec/xform_esp.c Tue Mar 20 16:17:55 2018 (r331247) +++ head/sys/netipsec/xform_esp.c Tue Mar 20 17:05:23 2018 (r331248) @@ -397,6 +397,7 @@ esp_input(struct mbuf *m, struct secasvar *sav, int sk xd->protoff = protoff; xd->skip = skip; xd->cryptoid = cryptoid; + xd->vnet = curvnet; /* Decryption descriptor */ IPSEC_ASSERT(crde != NULL, ("null esp crypto descriptor")); @@ -455,6 +456,7 @@ esp_input_cb(struct cryptop *crp) m = (struct mbuf *) crp->crp_buf; xd = (struct xform_data *) crp->crp_opaque; + CURVNET_SET(xd->vnet); sav = xd->sav; skip = xd->skip; protoff = xd->protoff; @@ -469,6 +471,7 @@ esp_input_cb(struct cryptop *crp) if (ipsec_updateid(sav, &crp->crp_sid, &cryptoid) != 0) crypto_freesession(cryptoid); xd->cryptoid = crp->crp_sid; + CURVNET_RESTORE(); return (crypto_dispatch(crp)); } ESPSTAT_INC(esps_noxform); @@ -603,8 +606,10 @@ esp_input_cb(struct cryptop *crp) panic("%s: Unexpected address family: %d saidx=%p", __func__, saidx->dst.sa.sa_family, saidx); } + CURVNET_RESTORE(); return error; bad: + CURVNET_RESTORE(); if (sav != NULL) key_freesav(&sav); if (m != NULL) @@ -837,6 +842,7 @@ esp_output(struct mbuf *m, struct secpolicy *sp, struc xd->sav = sav; xd->idx = idx; xd->cryptoid = cryptoid; + xd->vnet = curvnet; /* Crypto operation descriptor. */ crp->crp_ilen = m->m_pkthdr.len; /* Total input length. */ @@ -882,6 +888,7 @@ esp_output_cb(struct cryptop *crp) int error; xd = (struct xform_data *) crp->crp_opaque; + CURVNET_SET(xd->vnet); m = (struct mbuf *) crp->crp_buf; sp = xd->sp; sav = xd->sav; @@ -895,6 +902,7 @@ esp_output_cb(struct cryptop *crp) if (ipsec_updateid(sav, &crp->crp_sid, &cryptoid) != 0) crypto_freesession(cryptoid); xd->cryptoid = crp->crp_sid; + CURVNET_RESTORE(); return (crypto_dispatch(crp)); } ESPSTAT_INC(esps_noxform); @@ -940,8 +948,10 @@ esp_output_cb(struct cryptop *crp) /* NB: m is reclaimed by ipsec_process_done. */ error = ipsec_process_done(m, sp, sav, idx); + CURVNET_RESTORE(); return (error); bad: + CURVNET_RESTORE(); free(xd, M_XDATA); crypto_freereq(crp); key_freesav(&sav); Modified: head/sys/netipsec/xform_ipcomp.c ============================================================================== --- head/sys/netipsec/xform_ipcomp.c Tue Mar 20 16:17:55 2018 (r331247) +++ head/sys/netipsec/xform_ipcomp.c Tue Mar 20 17:05:23 2018 (r331248) @@ -255,6 +255,7 @@ ipcomp_input(struct mbuf *m, struct secasvar *sav, int xd->sav = sav; xd->protoff = protoff; xd->skip = skip; + xd->vnet = curvnet; SECASVAR_LOCK(sav); crp->crp_sid = xd->cryptoid = sav->tdb_cryptoid; @@ -286,6 +287,7 @@ ipcomp_input_cb(struct cryptop *crp) m = (struct mbuf *) crp->crp_buf; xd = (struct xform_data *) crp->crp_opaque; + CURVNET_SET(xd->vnet); sav = xd->sav; skip = xd->skip; protoff = xd->protoff; @@ -302,6 +304,7 @@ ipcomp_input_cb(struct cryptop *crp) if (ipsec_updateid(sav, &crp->crp_sid, &cryptoid) != 0) crypto_freesession(cryptoid); xd->cryptoid = crp->crp_sid; + CURVNET_RESTORE(); return (crypto_dispatch(crp)); } IPCOMPSTAT_INC(ipcomps_noxform); @@ -366,8 +369,10 @@ ipcomp_input_cb(struct cryptop *crp) panic("%s: Unexpected address family: %d saidx=%p", __func__, saidx->dst.sa.sa_family, saidx); } + CURVNET_RESTORE(); return error; bad: + CURVNET_RESTORE(); if (sav != NULL) key_freesav(&sav); if (m != NULL) @@ -493,6 +498,7 @@ ipcomp_output(struct mbuf *m, struct secpolicy *sp, st xd->idx = idx; xd->skip = skip; xd->protoff = protoff; + xd->vnet = curvnet; /* Crypto operation descriptor */ crp->crp_ilen = m->m_pkthdr.len; /* Total input length */ @@ -531,6 +537,7 @@ ipcomp_output_cb(struct cryptop *crp) m = (struct mbuf *) crp->crp_buf; xd = (struct xform_data *) crp->crp_opaque; + CURVNET_SET(xd->vnet); idx = xd->idx; sp = xd->sp; sav = xd->sav; @@ -545,6 +552,7 @@ ipcomp_output_cb(struct cryptop *crp) if (ipsec_updateid(sav, &crp->crp_sid, &cryptoid) != 0) crypto_freesession(cryptoid); xd->cryptoid = crp->crp_sid; + CURVNET_RESTORE(); return (crypto_dispatch(crp)); } IPCOMPSTAT_INC(ipcomps_noxform); @@ -640,10 +648,12 @@ ipcomp_output_cb(struct cryptop *crp) /* NB: m is reclaimed by ipsec_process_done. */ error = ipsec_process_done(m, sp, sav, idx); + CURVNET_RESTORE(); return (error); bad: if (m) m_freem(m); + CURVNET_RESTORE(); free(xd, M_XDATA); crypto_freereq(crp); key_freesav(&sav); _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
