From owner-svn-src-head@freebsd.org Sun Jun 21 18:40:17 2020 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id ED20B357B75; Sun, 21 Jun 2020 18:40:17 +0000 (UTC) (envelope-from kaktus@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49qhDd61KKz4Q6K; Sun, 21 Jun 2020 18:40:17 +0000 (UTC) (envelope-from kaktus@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 C55112136E; Sun, 21 Jun 2020 18:40:17 +0000 (UTC) (envelope-from kaktus@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 05LIeHJk043864; Sun, 21 Jun 2020 18:40:17 GMT (envelope-from kaktus@FreeBSD.org) Received: (from kaktus@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 05LIeHX5043863; Sun, 21 Jun 2020 18:40:17 GMT (envelope-from kaktus@FreeBSD.org) Message-Id: <202006211840.05LIeHX5043863@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kaktus set sender to kaktus@FreeBSD.org using -f From: Pawel Biernacki Date: Sun, 21 Jun 2020 18:40:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362468 - head/sys/net X-SVN-Group: head X-SVN-Commit-Author: kaktus X-SVN-Commit-Paths: head/sys/net X-SVN-Commit-Revision: 362468 X-SVN-Commit-Repository: base 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: 2.1.33 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, 21 Jun 2020 18:40:18 -0000 Author: kaktus Date: Sun Jun 21 18:40:17 2020 New Revision: 362468 URL: https://svnweb.freebsd.org/changeset/base/362468 Log: net.link.generic.ifdata..linkspecific: rework handler This OID was added in r17352 but the write path of IFDATA_LINKSPECIFIC seems unused as there are no in-base writers, and as far as I can tell we had issues with this code before, see PR 219472. Drop the write path to make the handler read-only as described in comments and man-pages. It can be marked as MPSAFE now. Reviewed by: bdragon, kib, melifaro, wollman Approved by: kib (mentor) Sponsored by: Mysterious Code Ltd. Differential Revision: https://reviews.freebsd.org/D25348 Modified: head/sys/net/if_mib.c Modified: head/sys/net/if_mib.c ============================================================================== --- head/sys/net/if_mib.c Sun Jun 21 16:06:01 2020 (r362467) +++ head/sys/net/if_mib.c Sun Jun 21 18:40:17 2020 (r362468) @@ -122,10 +122,6 @@ sysctl_ifdata(SYSCTL_HANDLER_ARGS) /* XXX bad syntax! error = SYSCTL_OUT(req, ifp->if_linkmib, ifp->if_linkmiblen); if (error || !req->newptr) goto out; - - error = SYSCTL_IN(req, ifp->if_linkmib, ifp->if_linkmiblen); - if (error) - goto out; break; case IFDATA_DRIVERNAME: @@ -152,6 +148,6 @@ out: } static SYSCTL_NODE(_net_link_generic, IFMIB_IFDATA, ifdata, - CTLFLAG_RW | CTLFLAG_NEEDGIANT, sysctl_ifdata, + CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_ifdata, "Interface table");