From owner-svn-src-all@freebsd.org Thu Oct 24 03:20:28 2019 Return-Path: Delivered-To: svn-src-all@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 5A3F91536D5; Thu, 24 Oct 2019 03:20:28 +0000 (UTC) (envelope-from kevans@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) server-signature RSA-PSS (4096 bits) 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 46zCDX1kGHz4HRH; Thu, 24 Oct 2019 03:20:28 +0000 (UTC) (envelope-from kevans@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 1E6147CED; Thu, 24 Oct 2019 03:20:28 +0000 (UTC) (envelope-from kevans@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x9O3KSOU013490; Thu, 24 Oct 2019 03:20:28 GMT (envelope-from kevans@FreeBSD.org) Received: (from kevans@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x9O3KSNK013489; Thu, 24 Oct 2019 03:20:28 GMT (envelope-from kevans@FreeBSD.org) Message-Id: <201910240320.x9O3KSNK013489@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kevans set sender to kevans@FreeBSD.org using -f From: Kyle Evans Date: Thu, 24 Oct 2019 03:20:27 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r353990 - stable/12/stand/efi/libefi X-SVN-Group: stable-12 X-SVN-Commit-Author: kevans X-SVN-Commit-Paths: stable/12/stand/efi/libefi X-SVN-Commit-Revision: 353990 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Oct 2019 03:20:28 -0000 Author: kevans Date: Thu Oct 24 03:20:27 2019 New Revision: 353990 URL: https://svnweb.freebsd.org/changeset/base/353990 Log: MFC r349201: efinet: Defer exclusively opening the network handles Don't commit to exclusive access to the network device handle by efinet until the loader has decided to load something through the network. This allows for the possibility of other users of the network device. Modified: stable/12/stand/efi/libefi/efinet.c Directory Properties: stable/12/ (props changed) Modified: stable/12/stand/efi/libefi/efinet.c ============================================================================== --- stable/12/stand/efi/libefi/efinet.c Thu Oct 24 03:19:45 2019 (r353989) +++ stable/12/stand/efi/libefi/efinet.c Thu Oct 24 03:20:27 2019 (r353990) @@ -108,7 +108,25 @@ efinet_match(struct netif *nif, void *machdep_hint) static int efinet_probe(struct netif *nif, void *machdep_hint) { + EFI_SIMPLE_NETWORK *net; + EFI_HANDLE h; + EFI_STATUS status; + h = nif->nif_driver->netif_ifs[nif->nif_unit].dif_private; + /* + * Open the network device in exclusive mode. Without this + * we will be racing with the UEFI network stack. It will + * pull packets off the network leading to lost packets. + */ + status = BS->OpenProtocol(h, &sn_guid, (void **)&net, + IH, NULL, EFI_OPEN_PROTOCOL_EXCLUSIVE); + if (status != EFI_SUCCESS) { + printf("Unable to open network interface %d for " + "exclusive access: %lu\n", nif->nif_unit, + EFI_ERROR_CODE(status)); + return (efi_status_to_errno(status)); + } + return (0); } @@ -269,7 +287,6 @@ efinet_dev_init() struct netif_dif *dif; struct netif_stats *stats; EFI_DEVICE_PATH *devpath, *node; - EFI_SIMPLE_NETWORK *net; EFI_HANDLE *handles, *handles2; EFI_STATUS status; UINTN sz; @@ -304,19 +321,6 @@ efinet_dev_init() if (DevicePathType(node) != MESSAGING_DEVICE_PATH || DevicePathSubType(node) != MSG_MAC_ADDR_DP) continue; - - /* - * Open the network device in exclusive mode. Without this - * we will be racing with the UEFI network stack. It will - * pull packets off the network leading to lost packets. - */ - status = BS->OpenProtocol(handles[i], &sn_guid, (void **)&net, - IH, NULL, EFI_OPEN_PROTOCOL_EXCLUSIVE); - if (status != EFI_SUCCESS) { - printf("Unable to open network interface %d for " - "exclusive access: %lu\n", i, - EFI_ERROR_CODE(status)); - } handles2[nifs] = handles[i]; nifs++;