From nobody Fri Nov 19 01:53:27 2021 X-Original-To: dev-commits-src-branches@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 521581852CF0; Fri, 19 Nov 2021 01:53:28 +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 4HwKSm1Knfz4hVD; Fri, 19 Nov 2021 01:53:28 +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 05DD01FA59; Fri, 19 Nov 2021 01:53:28 +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 1AJ1rRUl018886; Fri, 19 Nov 2021 01:53:27 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1AJ1rRhF018885; Fri, 19 Nov 2021 01:53:27 GMT (envelope-from git) Date: Fri, 19 Nov 2021 01:53:27 GMT Message-Id: <202111190153.1AJ1rRhF018885@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Ed Maste Subject: git: e20aa51503b5 - stable/12 - net: Allow binding of unspecified address without address existance List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-branches@freebsd.org X-BeenThere: dev-commits-src-branches@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: emaste X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: e20aa51503b5960c9514492d0746ce05e8eca8a6 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/12 has been updated by emaste: URL: https://cgit.FreeBSD.org/src/commit/?id=e20aa51503b5960c9514492d0746ce05e8eca8a6 commit e20aa51503b5960c9514492d0746ce05e8eca8a6 Author: Roy Marples AuthorDate: 2021-10-20 15:47:29 +0000 Commit: Ed Maste CommitDate: 2021-11-19 00:29:31 +0000 net: Allow binding of unspecified address without address existance Previously in_pcbbind_setup returned EADDRNOTAVAIL for empty V_in_ifaddrhead (i.e., no IPv4 addresses configured) and in6_pcbbind did the same for empty V_in6_ifaddrhead (no IPv6 addresses). An equivalent test has existed since 4.4-Lite. It was presumably done to avoid extra work (assuming the address isn't going to be found later). In normal system operation *_ifaddrhead will not be empty: they will at least have the loopback address(es). In practice no work will be avoided. Further, this case caused net/dhcpd to fail when run early in boot before assignment of any addresses. It should be possible to bind the unspecified address even if no addresses have been configured yet, so just remove the tests. The now-removed "XXX broken" comments were added in 59562606b9d3, which converted the ifaddr lists to TAILQs. As far as I (emaste) can tell the brokenness is the issue described above, not some aspect of the TAILQ conversion. PR: 253166 Reviewed by: ae, bz, donner, emaste, glebius MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D32563 (cherry picked from commit 5c5340108e9c2e384ca646720e17d037c69acc4c) --- sys/netinet/in_pcb.c | 2 -- sys/netinet6/in6_pcb.c | 2 -- 2 files changed, 4 deletions(-) diff --git a/sys/netinet/in_pcb.c b/sys/netinet/in_pcb.c index b8f06a96fe27..5a8076f1171a 100644 --- a/sys/netinet/in_pcb.c +++ b/sys/netinet/in_pcb.c @@ -845,8 +845,6 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp, INP_LOCK_ASSERT(inp); INP_HASH_LOCK_ASSERT(pcbinfo); - if (CK_STAILQ_EMPTY(&V_in_ifaddrhead)) /* XXX broken! */ - return (EADDRNOTAVAIL); laddr.s_addr = *laddrp; if (nam != NULL && laddr.s_addr != INADDR_ANY) return (EINVAL); diff --git a/sys/netinet6/in6_pcb.c b/sys/netinet6/in6_pcb.c index ee38e52c57f2..855d469da8ac 100644 --- a/sys/netinet6/in6_pcb.c +++ b/sys/netinet6/in6_pcb.c @@ -131,8 +131,6 @@ in6_pcbbind(struct inpcb *inp, struct sockaddr *nam, INP_WLOCK_ASSERT(inp); INP_HASH_WLOCK_ASSERT(pcbinfo); - if (CK_STAILQ_EMPTY(&V_in6_ifaddrhead)) /* XXX broken! */ - return (EADDRNOTAVAIL); if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) return (EINVAL); if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)