From owner-svn-src-head@FreeBSD.ORG Sun Jul 6 17:37:50 2014 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id D09D2566; Sun, 6 Jul 2014 17:37:50 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BCBCC24B5; Sun, 6 Jul 2014 17:37:50 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s66HboNb018385; Sun, 6 Jul 2014 17:37:50 GMT (envelope-from mav@svn.freebsd.org) Received: (from mav@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s66HbnLi018378; Sun, 6 Jul 2014 17:37:49 GMT (envelope-from mav@svn.freebsd.org) Message-Id: <201407061737.s66HbnLi018378@svn.freebsd.org> From: Alexander Motin Date: Sun, 6 Jul 2014 17:37:49 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r268326 - in head: sys/dev/iscsi usr.sbin/iscsid X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jul 2014 17:37:50 -0000 Author: mav Date: Sun Jul 6 17:37:49 2014 New Revision: 268326 URL: http://svnweb.freebsd.org/changeset/base/268326 Log: Make iSCSI initiator keep Initiator Session ID (ISID) across reconnects. Previously ISID was changed every time, that made impossible correct persistent reservation, because reconnected session was identified as completely new one. Reviewed by: trasz MFC after: 1 week Modified: head/sys/dev/iscsi/iscsi.c head/sys/dev/iscsi/iscsi.h head/sys/dev/iscsi/iscsi_ioctl.h head/usr.sbin/iscsid/iscsid.c head/usr.sbin/iscsid/iscsid.h head/usr.sbin/iscsid/login.c Modified: head/sys/dev/iscsi/iscsi.c ============================================================================== --- head/sys/dev/iscsi/iscsi.c Sun Jul 6 17:29:19 2014 (r268325) +++ head/sys/dev/iscsi/iscsi.c Sun Jul 6 17:37:49 2014 (r268326) @@ -1221,6 +1221,9 @@ iscsi_ioctl_daemon_wait(struct iscsi_sof ISCSI_SESSION_UNLOCK(is); request->idr_session_id = is->is_id; + memcpy(&request->idr_isid, &is->is_isid, + sizeof(request->idr_isid)); + request->idr_tsih = 0; /* New or reinstated session. */ memcpy(&request->idr_conf, &is->is_conf, sizeof(request->idr_conf)); @@ -1270,7 +1273,7 @@ iscsi_ioctl_daemon_handoff(struct iscsi_ strlcpy(is->is_target_alias, handoff->idh_target_alias, sizeof(is->is_target_alias)); - memcpy(is->is_isid, handoff->idh_isid, sizeof(is->is_isid)); + is->is_tsih = handoff->idh_tsih; is->is_statsn = handoff->idh_statsn; is->is_initial_r2t = handoff->idh_initial_r2t; is->is_immediate_data = handoff->idh_immediate_data; @@ -1663,6 +1666,9 @@ iscsi_ioctl_session_add(struct iscsi_sof is->is_softc = sc; sc->sc_last_session_id++; is->is_id = sc->sc_last_session_id; + is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ + arc4rand(&is->is_isid[1], 5, 0); + is->is_tsih = 0; callout_init(&is->is_callout, 1); callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); Modified: head/sys/dev/iscsi/iscsi.h ============================================================================== --- head/sys/dev/iscsi/iscsi.h Sun Jul 6 17:29:19 2014 (r268325) +++ head/sys/dev/iscsi/iscsi.h Sun Jul 6 17:37:49 2014 (r268326) @@ -64,6 +64,7 @@ struct iscsi_session { size_t is_max_burst_length; size_t is_first_burst_length; uint8_t is_isid[6]; + uint16_t is_tsih; bool is_immediate_data; size_t is_max_data_segment_length; char is_target_alias[ISCSI_ALIAS_LEN]; Modified: head/sys/dev/iscsi/iscsi_ioctl.h ============================================================================== --- head/sys/dev/iscsi/iscsi_ioctl.h Sun Jul 6 17:29:19 2014 (r268325) +++ head/sys/dev/iscsi/iscsi_ioctl.h Sun Jul 6 17:37:49 2014 (r268326) @@ -91,8 +91,8 @@ struct iscsi_session_state { struct iscsi_daemon_request { unsigned int idr_session_id; struct iscsi_session_conf idr_conf; - uint8_t idr_spare_isid[6]; - uint16_t idr_spare_tsih; + uint8_t idr_isid[6]; + uint16_t idr_tsih; uint16_t idr_spare_cid; int idr_spare[4]; }; @@ -101,9 +101,9 @@ struct iscsi_daemon_handoff { unsigned int idh_session_id; int idh_socket; char idh_target_alias[ISCSI_ALIAS_LEN]; - uint8_t idh_isid[6]; - uint16_t idr_spare_tsih; - uint16_t idr_spare_cid; + uint8_t idh_spare_isid[6]; + uint16_t idh_tsih; + uint16_t idh_spare_cid; uint32_t idh_statsn; int idh_header_digest; int idh_data_digest; Modified: head/usr.sbin/iscsid/iscsid.c ============================================================================== --- head/usr.sbin/iscsid/iscsid.c Sun Jul 6 17:29:19 2014 (r268325) +++ head/usr.sbin/iscsid/iscsid.c Sun Jul 6 17:37:49 2014 (r268326) @@ -149,8 +149,8 @@ resolve_addr(const struct connection *co } static struct connection * -connection_new(unsigned int session_id, const struct iscsi_session_conf *conf, - int iscsi_fd) +connection_new(unsigned int session_id, const uint8_t isid[8], uint16_t tsih, + const struct iscsi_session_conf *conf, int iscsi_fd) { struct connection *conn; struct addrinfo *from_ai, *to_ai; @@ -176,6 +176,8 @@ connection_new(unsigned int session_id, conn->conn_first_burst_length = 65536; conn->conn_session_id = session_id; + memcpy(&conn->conn_isid, isid, sizeof(conn->conn_isid)); + conn->conn_tsih = tsih; conn->conn_iscsi_fd = iscsi_fd; /* @@ -264,7 +266,7 @@ handoff(struct connection *conn) idh.idh_socket = conn->conn_socket; strlcpy(idh.idh_target_alias, conn->conn_target_alias, sizeof(idh.idh_target_alias)); - memcpy(idh.idh_isid, conn->conn_isid, sizeof(idh.idh_isid)); + idh.idh_tsih = conn->conn_tsih; idh.idh_statsn = conn->conn_statsn; idh.idh_header_digest = conn->conn_header_digest; idh.idh_data_digest = conn->conn_data_digest; @@ -430,7 +432,8 @@ handle_request(int iscsi_fd, const struc setproctitle("%s", request->idr_conf.isc_target_addr); } - conn = connection_new(request->idr_session_id, &request->idr_conf, iscsi_fd); + conn = connection_new(request->idr_session_id, request->idr_isid, + request->idr_tsih, &request->idr_conf, iscsi_fd); set_timeout(timeout); capsicate(conn); login(conn); Modified: head/usr.sbin/iscsid/iscsid.h ============================================================================== --- head/usr.sbin/iscsid/iscsid.h Sun Jul 6 17:29:19 2014 (r268325) +++ head/usr.sbin/iscsid/iscsid.h Sun Jul 6 17:37:49 2014 (r268326) @@ -51,6 +51,7 @@ struct connection { struct iscsi_session_conf conn_conf; char conn_target_alias[ISCSI_ADDR_LEN]; uint8_t conn_isid[6]; + uint16_t conn_tsih; uint32_t conn_statsn; int conn_header_digest; int conn_data_digest; Modified: head/usr.sbin/iscsid/login.c ============================================================================== --- head/usr.sbin/iscsid/login.c Sun Jul 6 17:29:19 2014 (r268325) +++ head/usr.sbin/iscsid/login.c Sun Jul 6 17:37:49 2014 (r268326) @@ -260,6 +260,7 @@ login_receive(struct connection *conn) "is %d, should be %d", ntohl(bhslr->bhslr_statsn), conn->conn_statsn + 1); } + conn->conn_tsih = ntohs(bhslr->bhslr_tsih); conn->conn_statsn = ntohl(bhslr->bhslr_statsn); initial = false; @@ -295,6 +296,7 @@ login_new_request(struct connection *con login_set_nsg(request, nsg); memcpy(bhslr->bhslr_isid, &conn->conn_isid, sizeof(bhslr->bhslr_isid)); + bhslr->bhslr_tsih = htons(conn->conn_tsih); bhslr->bhslr_initiator_task_tag = 0; bhslr->bhslr_cmdsn = 0; bhslr->bhslr_expstatsn = htonl(conn->conn_statsn + 1); @@ -824,24 +826,6 @@ login_chap(struct connection *conn) log_debugx("CHAP authentication done"); } -static void -login_create_isid(struct connection *conn) -{ - int rv; - - /* - * RFC 3720, 10.12.5: 10b, "Random" ISID. - * - */ - conn->conn_isid[0] = 0x80; - - rv = RAND_bytes(&conn->conn_isid[1], 3); - if (rv != 1) { - log_errx(1, "RAND_bytes failed: %s", - ERR_error_string(ERR_get_error(), NULL)); - } -} - void login(struct connection *conn) { @@ -851,8 +835,6 @@ login(struct connection *conn) const char *auth_method; int i; - login_create_isid(conn); - log_debugx("beginning Login phase; sending Login PDU"); request = login_new_request(conn, BHSLR_STAGE_SECURITY_NEGOTIATION); request_keys = keys_new();