From owner-svn-src-head@freebsd.org Thu Jun 14 11:15:40 2018 Return-Path: Delivered-To: svn-src-head@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 DFAEA101DE66; Thu, 14 Jun 2018 11:15:40 +0000 (UTC) (envelope-from ae@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 90DA8849E4; Thu, 14 Jun 2018 11:15:40 +0000 (UTC) (envelope-from ae@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 6EB8727A94; Thu, 14 Jun 2018 11:15:40 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w5EBFe1Q007471; Thu, 14 Jun 2018 11:15:40 GMT (envelope-from ae@FreeBSD.org) Received: (from ae@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w5EBFeTu007470; Thu, 14 Jun 2018 11:15:40 GMT (envelope-from ae@FreeBSD.org) Message-Id: <201806141115.w5EBFeTu007470@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ae set sender to ae@FreeBSD.org using -f From: "Andrey V. Elsukov" Date: Thu, 14 Jun 2018 11:15:40 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r335133 - head/sys/netinet/libalias X-SVN-Group: head X-SVN-Commit-Author: ae X-SVN-Commit-Paths: head/sys/netinet/libalias X-SVN-Commit-Revision: 335133 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: 2.1.26 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: Thu, 14 Jun 2018 11:15:41 -0000 Author: ae Date: Thu Jun 14 11:15:39 2018 New Revision: 335133 URL: https://svnweb.freebsd.org/changeset/base/335133 Log: In m_megapullup() use m_getjcl() to allocate 9k or 16k mbuf when requested. It is better to try allocate a big mbuf, than just silently drop a big packet. A better solution could be reworking of libalias modules to be able use m_copydata()/m_copyback() instead of requiring the single contiguous buffer. PR: 229006 MFC after: 1 week Modified: head/sys/netinet/libalias/alias.c Modified: head/sys/netinet/libalias/alias.c ============================================================================== --- head/sys/netinet/libalias/alias.c Thu Jun 14 11:09:51 2018 (r335132) +++ head/sys/netinet/libalias/alias.c Thu Jun 14 11:15:39 2018 (r335133) @@ -1751,7 +1751,8 @@ LibAliasUnLoadAllModule(void) * the input packet, on failure NULL. The input packet is always consumed. */ struct mbuf * -m_megapullup(struct mbuf *m, int len) { +m_megapullup(struct mbuf *m, int len) +{ struct mbuf *mcl; if (len > m->m_pkthdr.len) @@ -1760,7 +1761,14 @@ m_megapullup(struct mbuf *m, int len) { if (m->m_next == NULL && M_WRITABLE(m)) return (m); - mcl = m_get2(len, M_NOWAIT, MT_DATA, M_PKTHDR); + if (len <= MJUMPAGESIZE) + mcl = m_get2(len, M_NOWAIT, MT_DATA, M_PKTHDR); + else if (len <= MJUM9BYTES) + mcl = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUM9BYTES); + else if (len <= MJUM16BYTES) + mcl = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUM16BYTES); + else + goto bad; if (mcl == NULL) goto bad; m_align(mcl, len);