From owner-svn-src-stable@freebsd.org Sat Apr 7 14:35:47 2018 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 95858F8CFCF; Sat, 7 Apr 2018 14:35:47 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4B33383B42; Sat, 7 Apr 2018 14:35:47 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 461F922143; Sat, 7 Apr 2018 14:35:47 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w37EZlWs005937; Sat, 7 Apr 2018 14:35:47 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w37EZlfp005936; Sat, 7 Apr 2018 14:35:47 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201804071435.w37EZlfp005936@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Sat, 7 Apr 2018 14:35:47 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r332167 - stable/11/sys/netinet X-SVN-Group: stable-11 X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: stable/11/sys/netinet X-SVN-Commit-Revision: 332167 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Apr 2018 14:35:47 -0000 Author: tuexen Date: Sat Apr 7 14:35:46 2018 New Revision: 332167 URL: https://svnweb.freebsd.org/changeset/base/332167 Log: MFC r320650: Don't hold a refcount on an stcb when it is not needed. This improves the consistency with other parts of the code. Modified: stable/11/sys/netinet/sctp_input.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/netinet/sctp_input.c ============================================================================== --- stable/11/sys/netinet/sctp_input.c Sat Apr 7 14:17:17 2018 (r332166) +++ stable/11/sys/netinet/sctp_input.c Sat Apr 7 14:35:46 2018 (r332167) @@ -2152,23 +2152,23 @@ sctp_process_cookie_new(struct mbuf *m, int iphlen, in * cookie was in flight. Only recourse is to abort the * association. */ - atomic_add_int(&stcb->asoc.refcnt, 1); op_err = sctp_generate_cause(SCTP_CAUSE_OUT_OF_RESC, ""); sctp_abort_association(inp, (struct sctp_tcb *)NULL, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); + atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_18); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif - atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } /* process the INIT-ACK info (my info) */ @@ -2189,36 +2189,36 @@ sctp_process_cookie_new(struct mbuf *m, int iphlen, in else retval = 0; if (retval < 0) { - atomic_add_int(&stcb->asoc.refcnt, 1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); + atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_19); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif - atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } /* load all addresses */ if (sctp_load_addresses_from_init(stcb, m, init_offset + sizeof(struct sctp_init_chunk), initack_offset, src, dst, init_src, port)) { - atomic_add_int(&stcb->asoc.refcnt, 1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); + atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_20); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif - atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } /* @@ -2237,18 +2237,18 @@ sctp_process_cookie_new(struct mbuf *m, int iphlen, in /* auth HMAC failed, dump the assoc and packet */ SCTPDBG(SCTP_DEBUG_AUTH1, "COOKIE-ECHO: AUTH failed\n"); - atomic_add_int(&stcb->asoc.refcnt, 1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); + atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_21); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif - atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } else { /* remaining chunks checked... good to go */ @@ -2298,18 +2298,18 @@ sctp_process_cookie_new(struct mbuf *m, int iphlen, in break; #endif default: - atomic_add_int(&stcb->asoc.refcnt, 1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); + atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_22); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif - atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); }