#!/bin/bash

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# called by dracut

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check() {

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is_fcoe() {

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block_is_fcoe $1 || return 1

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}

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[[ $hostonly ]] || [[ $mount_needs ]] && {

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for_each_host_dev_and_slaves is_fcoe || return 255

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}

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require_binaries dcbtool fipvlan lldpad ip readlink fcoemon fcoeadm || return 1

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return 0

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}

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# called by dracut

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depends() {

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echo network rootfs-block

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return 0

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}

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# called by dracut

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installkernel() {

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instmods fcoe libfcoe 8021q edd bnx2fc

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}

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get_vlan_parent() {

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local link=$1

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[ -d $link ] || return

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read iflink < $link/iflink

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for if in /sys/class/net/* ; do

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read idx < $if/ifindex

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if [ $idx -eq $iflink ] ; then

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echo ${if##*/}

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fi

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done

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}

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# called by dracut

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cmdline() {

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{

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for c in /sys/bus/fcoe/devices/ctlr_* ; do

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[ -L $c ] || continue

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read enabled < $c/enabled

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read mode < $c/mode

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[ $enabled -eq 0 ] && continue

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if [ $mode = "VN2VN" ] ; then

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mode="vn2vn"

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else

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mode="fabric"

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fi

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d=$(cd -P $c; echo $PWD)

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i=${d%/*}

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ifname=${i##*/}

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read mac < ${i}/address

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s=$(dcbtool gc ${i##*/} dcb 2>/dev/null | sed -n 's/^DCB State:\t*\(.*\)/\1/p')

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if [ -z "$s" ] ; then

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p=$(get_vlan_parent ${i})

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if [ "$p" ] ; then

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s=$(dcbtool gc ${p} dcb 2>/dev/null | sed -n 's/^DCB State:\t*\(.*\)/\1/p')

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ifname=${p##*/}

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fi

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fi

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if [ "$s" = "on" ] ; then

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dcb="dcb"

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else

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dcb="nodcb"

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fi

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# Some Combined Network Adapters(CNAs) implement DCB in firmware.

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# Do not run software-based DCB or LLDP on CNAs that implement DCB.

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# If the network interface provides hardware DCB/DCBX capabilities,

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# DCB_REQUIRED in "/etc/fcoe/cfg-xxx" is expected to set to "no".

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#

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# Force "nodcb" if there's any DCB_REQUIRED="no"(child or vlan parent).

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grep -q "^[[:blank:]]*DCB_REQUIRED=\"no\"" /etc/fcoe/cfg-${i##*/} &>/dev/null

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[ $? -eq 0 ] && dcb="nodcb"

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if [ "$p" ] ; then

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grep -q "^[[:blank:]]*DCB_REQUIRED=\"no\"" /etc/fcoe/cfg-${p} &>/dev/null

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[ $? -eq 0 ] && dcb="nodcb"

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fi

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echo "ifname=${ifname}:${mac}"

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echo "fcoe=${ifname}:${dcb}:${mode}"

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done

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} | sort | uniq

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}

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# called by dracut

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install() {

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inst_multiple ip dcbtool fipvlan lldpad readlink lldptool fcoemon fcoeadm

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if [ -e "/etc/hba.conf" ]; then

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inst_libdir_file 'libhbalinux.so*'

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inst_simple "/etc/hba.conf"

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fi

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mkdir -m 0755 -p "$initdir/var/lib/lldpad"

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mkdir -m 0755 -p "$initdir/etc/fcoe"

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if [[ $hostonly_cmdline == "yes" ]] ; then

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local _fcoeconf=$(cmdline)

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[[ $_fcoeconf ]] && printf "%s\n" "$_fcoeconf" >> "${initdir}/etc/cmdline.d/95fcoe.conf"

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fi

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inst_multiple /etc/fcoe/cfg-*

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

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

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

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inst_hook pre-trigger 03 "$moddir/lldpad.sh"

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

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inst_hook cleanup 90 "$moddir/cleanup-fcoe.sh"

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inst_hook shutdown 40 "$moddir/stop-fcoe.sh"

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dracut_need_initqueue

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}

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