From nobody Sun Nov 14 20:13:35 2021 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id A61701849E93; Sun, 14 Nov 2021 20:13:35 +0000 (UTC) (envelope-from git@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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Hsk6R4Dchz3QmL; Sun, 14 Nov 2021 20:13:35 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 70E4949B9; Sun, 14 Nov 2021 20:13:35 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1AEKDZgV081820; Sun, 14 Nov 2021 20:13:35 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1AEKDZvB081819; Sun, 14 Nov 2021 20:13:35 GMT (envelope-from git) Date: Sun, 14 Nov 2021 20:13:35 GMT Message-Id: <202111142013.1AEKDZvB081819@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Mike Karels Subject: git: 2f35e7d9fa03 - main - kernel: partially revert e9efb1125a15, default inet mask List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: karels X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 2f35e7d9fa03f27543f347cd6277af5bfc6a7e95 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by karels: URL: https://cgit.FreeBSD.org/src/commit/?id=2f35e7d9fa03f27543f347cd6277af5bfc6a7e95 commit 2f35e7d9fa03f27543f347cd6277af5bfc6a7e95 Author: Mike Karels AuthorDate: 2021-11-10 21:35:33 +0000 Commit: Mike Karels CommitDate: 2021-11-14 20:12:25 +0000 kernel: partially revert e9efb1125a15, default inet mask When no mask is supplied to the ioctl adding an Internet interface address, revert to using the historical class mask rather than a single default. Similarly for the NFS bootp code. MFC after: 3 weeks Reviewed by: melifaro glebius Differential Revision: https://reviews.freebsd.org/D32951 --- sys/netinet/in.c | 17 +++++++++++++---- sys/nfs/bootp_subr.c | 13 ++++++++++--- 2 files changed, 23 insertions(+), 7 deletions(-) diff --git a/sys/netinet/in.c b/sys/netinet/in.c index fccad3d9ede2..70fbe32c05ac 100644 --- a/sys/netinet/in.c +++ b/sys/netinet/in.c @@ -35,6 +35,8 @@ #include __FBSDID("$FreeBSD$"); +#define IN_HISTORICAL_NETS /* include class masks */ + #include #include #include @@ -467,17 +469,24 @@ in_aifaddr_ioctl(u_long cmd, caddr_t data, struct ifnet *ifp, struct thread *td) ia->ia_sockmask = *mask; ia->ia_subnetmask = ntohl(ia->ia_sockmask.sin_addr.s_addr); } else { + in_addr_t i = ntohl(addr->sin_addr.s_addr); + /* - * If netmask isn't supplied, use default for now. + * If netmask isn't supplied, use historical default. * This is deprecated for interfaces other than loopback * or point-to-point; warn in other cases. In the future * we should return an error rather than warning. */ if ((ifp->if_flags & (IFF_POINTOPOINT | IFF_LOOPBACK)) == 0) - printf("%s: set address: WARNING: network mask" - " should be specified; using default mask\n", + printf("%s: set address: WARNING: network mask " + "should be specified; using historical default\n", ifp->if_xname); - ia->ia_subnetmask = IN_NETMASK_DEFAULT; + if (IN_CLASSA(i)) + ia->ia_subnetmask = IN_CLASSA_NET; + else if (IN_CLASSB(i)) + ia->ia_subnetmask = IN_CLASSB_NET; + else + ia->ia_subnetmask = IN_CLASSC_NET; ia->ia_sockmask.sin_addr.s_addr = htonl(ia->ia_subnetmask); } ia->ia_subnet = ntohl(addr->sin_addr.s_addr) & ia->ia_subnetmask; diff --git a/sys/nfs/bootp_subr.c b/sys/nfs/bootp_subr.c index a6dfbe0334f8..eedda7baa377 100644 --- a/sys/nfs/bootp_subr.c +++ b/sys/nfs/bootp_subr.c @@ -42,6 +42,8 @@ * $NetBSD: krpc_subr.c,v 1.10 1995/08/08 20:43:43 gwr Exp $ */ +#define IN_HISTORICAL_NETS /* include class masks */ + #include __FBSDID("$FreeBSD$"); @@ -1486,11 +1488,16 @@ bootpc_decode_reply(struct nfsv3_diskless *nd, struct bootpc_ifcontext *ifctx, if (ifctx->gotnetmask == 0) { /* - * If there is no netmask, use a default, but we really - * need the right mask from the server. + * If there is no netmask, use historical default, + * but we really need the right mask from the server. */ printf("%s: no netmask received!\n", ifctx->ireq.ifr_name); - ifctx->netmask.sin_addr.s_addr = htonl(IN_NETMASK_DEFAULT); + if (IN_CLASSA(ntohl(ifctx->myaddr.sin_addr.s_addr))) + ifctx->netmask.sin_addr.s_addr = htonl(IN_CLASSA_NET); + else if (IN_CLASSB(ntohl(ifctx->myaddr.sin_addr.s_addr))) + ifctx->netmask.sin_addr.s_addr = htonl(IN_CLASSB_NET); + else + ifctx->netmask.sin_addr.s_addr = htonl(IN_CLASSC_NET); } }