From owner-svn-src-all@FreeBSD.ORG Wed Sep 17 08:47:59 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 42B2C9B5; Wed, 17 Sep 2014 08:47:59 +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 14785DA8; Wed, 17 Sep 2014 08:47:59 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id s8H8lwJL015782; Wed, 17 Sep 2014 08:47:58 GMT (envelope-from trasz@FreeBSD.org) Received: (from trasz@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id s8H8lwR7015781; Wed, 17 Sep 2014 08:47:58 GMT (envelope-from trasz@FreeBSD.org) Message-Id: <201409170847.s8H8lwR7015781@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: trasz set sender to trasz@FreeBSD.org using -f From: Edward Tomasz Napierala Date: Wed, 17 Sep 2014 08:47:58 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r271706 - stable/10/usr.sbin/iscsid X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Sep 2014 08:47:59 -0000 Author: trasz Date: Wed Sep 17 08:47:58 2014 New Revision: 271706 URL: http://svnweb.freebsd.org/changeset/base/271706 Log: MFC r271437: Don't blindly assume the target agreed to transition to Full Feature Phase; if we got a Login Response PDU without the "T" bit set, try again with an empty request. This fixes interoperability with COMSTAR. Reviewed by: mav Tested by: mav Approved by: re (kib) Sponsored by: The FreeBSD Foundation Modified: stable/10/usr.sbin/iscsid/login.c Directory Properties: stable/10/ (props changed) Modified: stable/10/usr.sbin/iscsid/login.c ============================================================================== --- stable/10/usr.sbin/iscsid/login.c Wed Sep 17 08:28:50 2014 (r271705) +++ stable/10/usr.sbin/iscsid/login.c Wed Sep 17 08:47:58 2014 (r271706) @@ -574,7 +574,7 @@ login_negotiate(struct connection *conn) struct pdu *request, *response; struct keys *request_keys, *response_keys; struct iscsi_bhs_login_response *bhslr; - int i; + int i, nrequests = 0; log_debugx("beginning operational parameter negotiation"); request = login_new_request(conn, BHSLR_STAGE_OPERATIONAL_NEGOTIATION); @@ -628,19 +628,41 @@ login_negotiate(struct connection *conn) response_keys->keys_names[i], response_keys->keys_values[i]); } - bhslr = (struct iscsi_bhs_login_response *)response->pdu_bhs; - if ((bhslr->bhslr_flags & BHSLR_FLAGS_TRANSIT) == 0) - log_warnx("received final login response " - "without the \"T\" flag"); - else if (login_nsg(response) != BHSLR_STAGE_FULL_FEATURE_PHASE) + keys_delete(response_keys); + response_keys = NULL; + + for (;;) { + bhslr = (struct iscsi_bhs_login_response *)response->pdu_bhs; + if ((bhslr->bhslr_flags & BHSLR_FLAGS_TRANSIT) != 0) + break; + + nrequests++; + if (nrequests > 5) { + log_warnx("received login response " + "without the \"T\" flag too many times; giving up"); + break; + } + + log_debugx("received login response " + "without the \"T\" flag; sending another request"); + + pdu_delete(response); + + request = login_new_request(conn, + BHSLR_STAGE_OPERATIONAL_NEGOTIATION); + pdu_send(request); + pdu_delete(request); + + response = login_receive(conn); + } + + if (login_nsg(response) != BHSLR_STAGE_FULL_FEATURE_PHASE) log_warnx("received final login response with wrong NSG 0x%x", login_nsg(response)); + pdu_delete(response); log_debugx("operational parameter negotiation done; " "transitioning to Full Feature phase"); - - keys_delete(response_keys); - pdu_delete(response); } static void