From 1b827040f8b3e1e4fec19de76526fe0620654502 Mon Sep 17 00:00:00 2001

From: Harald Hoyer <harald@redhat.com>

Date: Mon, 7 Oct 2013 14:24:36 +0200

Subject: [PATCH] fcoe: add FCoE UEFI boot device support

---

 modules.d/95fcoe/module-setup.sh   |   1 +

 modules.d/95fcoe/parse-uefifcoe.sh |  35 +++++++++

 modules.d/99base/module-setup.sh   |   1 +

 modules.d/99base/uefi-lib.sh       | 155 +++++++++++++++++++++++++++++++++++++

 4 files changed, 192 insertions(+)

 create mode 100755 modules.d/95fcoe/parse-uefifcoe.sh

 create mode 100755 modules.d/99base/uefi-lib.sh

diff --git a/modules.d/95fcoe/module-setup.sh b/modules.d/95fcoe/module-setup.sh

index d3c58cc..08ba4ea 100755

--- a/modules.d/95fcoe/module-setup.sh

+++ b/modules.d/95fcoe/module-setup.sh

@@ -32,6 +32,7 @@ install() {

     inst "$moddir/fcoe-up.sh" "/sbin/fcoe-up"

     inst "$moddir/fcoe-edd.sh" "/sbin/fcoe-edd"

     inst "$moddir/fcoe-genrules.sh" "/sbin/fcoe-genrules.sh"

+    inst_hook cmdline 20 "$moddir/parse-uefifcoe.sh"

     inst_hook cmdline 99 "$moddir/parse-fcoe.sh"

     dracut_need_initqueue

 }

diff --git a/modules.d/95fcoe/parse-uefifcoe.sh b/modules.d/95fcoe/parse-uefifcoe.sh

new file mode 100755

index 0000000..e03bcb3

--- /dev/null

+++ b/modules.d/95fcoe/parse-uefifcoe.sh

@@ -0,0 +1,35 @@

+#!/bin/bash

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+

+command -v getarg >/dev/null          || . /lib/dracut-lib.sh

+command -v get_fcoe_boot_mac >/dev/null || . /lib/uefi-lib.sh

+command -v set_ifname >/dev/null || . /lib/net-lib.sh

+

+print_fcoe_uefi_conf()

+{

+    local mac dev vlan

+    mac=$(get_fcoe_boot_mac)

+    [ -z "$mac" ] && continue

+    dev=$(set_ifname fcoe $mac)

+    vlan=$(get_fcoe_boot_vlan)

+    if [ "$vlan" -ne "0" ]; then

+        case "$vlan" in

+            [0-9]*)

+                printf "%s\n" "vlan=$dev.$vlan:$dev"

+                dev="$dev.$vlan"

+                ;;

+            *)

+                printf "%s\n" "vlan=$vlan:$dev"

+                dev="$vlan"

+                ;;

+        esac

+    fi

+    # fcoe=eth0:nodcb

+    printf "%s\n" "$dev:nodcb"

+}

+

+

+if [ -e /sys/firmware/efi/vars/FcoeBootDevice-a0ebca23-5f9c-447a-a268-22b6c158c2ac/data ]; then

+    print_fcoe_uefi_conf > /etc/cmdline.d/40-fcoe-uefi.conf

+fi

diff --git a/modules.d/99base/module-setup.sh b/modules.d/99base/module-setup.sh

index 52ce400..d33a0fb 100755

--- a/modules.d/99base/module-setup.sh

+++ b/modules.d/99base/module-setup.sh

@@ -42,6 +42,7 @@ install() {

     mkdir -p ${initdir}/tmp

     inst_simple "$moddir/dracut-lib.sh" "/lib/dracut-lib.sh"

+    inst_simple "$moddir/uefi-lib.sh" "/lib/uefi-lib.sh"

     if ! dracut_module_included "systemd"; then

         inst_multiple switch_root || dfatal "Failed to install switch_root"

diff --git a/modules.d/99base/uefi-lib.sh b/modules.d/99base/uefi-lib.sh

new file mode 100755

index 0000000..faedbac

--- /dev/null

+++ b/modules.d/99base/uefi-lib.sh

@@ -0,0 +1,155 @@

+#!/bin/bash

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+#

+# Copyright 2013 Red Hat, Inc.  All rights reserved.

+# Copyright 2013 Harald Hoyer <harald@redhat.com>

+#

+# This program is free software; you can redistribute it and/or modify

+# it under the terms of the GNU General Public License as published by

+# the Free Software Foundation; either version 2 of the License, or

+# (at your option) any later version.

+#

+# This program is distributed in the hope that it will be useful,

+# but WITHOUT ANY WARRANTY; without even the implied warranty of

+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+# GNU General Public License for more details.

+#

+# You should have received a copy of the GNU General Public License

+# along with this program.  If not, see <http://www.gnu.org/licenses/>.

+#

+

+getbyte () {

+    local IFS= LC_CTYPE=C res c

+    read -r -n 1 -d '' c

+    res=$?

+    # the single quote in the argument of the printf

+    # yields the numeric value of $c (ASCII since LC_CTYPE=C)

+    [[ -n $c ]] && c=$(printf '%u' "'$c") || c=0

+    printf "$c"

+    return $res

+}

+

+getword () {

+    local b1 b2 val

+    b1=$(getbyte) || return 1

+    b2=$(getbyte) || return 1

+    (( val = b2 * 256 + b1 ))

+    echo $val

+    return 0

+}

+

+# Acpi(PNP0A08,0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)/MAC(90E2BA265ED4,0x0)/Vlan(172)/Fibre(0x4EA06104A0CC0050,0x0)

+uefi_device_path()

+{

+    local IFS= LC_CTYPE=C res tt len type hextype first

+    first=1

+

+    while :; do

+        type=$(getbyte) || return 1

+        subtype=$(getbyte) || return 1

+        len=$(getword) || return 1

+        hextype=$(printf "%02x%02x" "$type" "$subtype")

+        if [[ $first == 1 ]]; then

+            first=0

+        elif [[ $hextype != "7fff" ]]; then

+            printf "/"

+        fi

+        case $hextype in

+            0101)

+                # PCI

+                tt=$(getword)

+                printf "PCI(0x%x,0x%x)" $(($tt / 256)) $(($tt & 255))

+                ;;

+            0201)

+                # ACPI

+                printf "Acpi(0x%x,0x%x)" $(($(getword) + $(getword) * 65536)) $(($(getword) + $(getword) * 65536))

+                ;;

+            0303)

+                # FIBRE

+                getword &>/dev/null

+                getword &>/dev/null

+                printf "Fibre(0x%x%x%x%x%x%x%x%x,0x%x)" \

+                    $(getbyte) $(getbyte) $(getbyte) $(getbyte) \

+                    $(getbyte) $(getbyte) $(getbyte) $(getbyte) \

+                    $(( $(getword) + $(getword) * 65536 + 4294967296 * ( $(getword) + $(getword) * 65536 ) ))

+                ;;

+            030b)

+                # MAC

+                printf "MAC(%02x%02x%02x%02x%02x%02x," $(getbyte) $(getbyte) $(getbyte) $(getbyte) $(getbyte) $(getbyte)

+                read -r -N 26  tt || return 1

+                printf "0x%x)"  $(getbyte)

+                ;;

+            0314)

+                # VLAN

+                printf "VLAN(%d)" $(getword)

+                ;;

+            7fff)

+                # END

+                printf "\n"

+                return 0

+                ;;

+            *)

+                printf "Unknown(Type:%d SubType:%d len=%d)" "$type" "$subtype" "$len"

+                read -r -N $(($len-4))  tt || return 1

+                ;;

+        esac

+    done

+}

+

+get_fcoe_boot_mac()

+{

+    data=${1:-/sys/firmware/efi/vars/FcoeBootDevice-a0ebca23-5f9c-447a-a268-22b6c158c2ac/data}

+    [ -f $data ] || return 1

+    local IFS= LC_CTYPE=C tt len type hextype

+    first=1

+

+    while :; do

+        type=$(getbyte) || return 1

+        subtype=$(getbyte) || return 1

+        len=$(getword) || return 1

+        hextype=$(printf "%02x%02x" "$type" "$subtype")

+        case $hextype in

+            030b)

+                # MAC

+                printf "%02x:%02x:%02x:%02x:%02x:%02x" $(getbyte) $(getbyte) $(getbyte) $(getbyte) $(getbyte) $(getbyte)

+                read -r -N 27  tt || return 1

+                ;;

+            7fff)

+                # END

+                return 0

+                ;;

+            *)

+                read -r -N $(($len-4))  tt || return 1

+                ;;

+        esac

+    done < $data

+}

+

+get_fcoe_boot_vlan()

+{

+    data=${1:-/sys/firmware/efi/vars/FcoeBootDevice-a0ebca23-5f9c-447a-a268-22b6c158c2ac/data}

+    [ -f $data ] || return 1

+    local IFS= LC_CTYPE=C tt len type hextype

+    first=1

+

+    while :; do

+        type=$(getbyte) || return 1

+        subtype=$(getbyte) || return 1

+        len=$(getword) || return 1

+        hextype=$(printf "%02x%02x" "$type" "$subtype")

+        case $hextype in

+            0314)

+                # VLAN

+                printf "%d" $(getword)

+                ;;

+            7fff)

+                # END

+                return 0

+                ;;

+            *)

+                read -r -N $(($len-4))  tt || return 1

+                ;;

+        esac

+    done < $data

+}