From b4331f2c353e1bdb91787470319bfe6e4774c484 Mon Sep 17 00:00:00 2001
From: root <root@r-dcs5-04.mtr.labs.mlnx>
Date: Tue, 17 Dec 2019 13:54:16 +0000
Subject: [PATCH] Adding support for IPoIb interfaces

The patch allow to ifup/ifdown IpoIB interfaces from network-scripts
The required config is the following
DEVICE=ib0.8005 # ib0 the it IB interface
TYPE=Infiniband # the type is Infiniband
PKEY=yes        # indicator that it's IPoIB interface
PKEY_ID=5       # the pkey number
---
 network-scripts/ifdown    |  6 +++++-
 network-scripts/ifdown-ib | 14 ++++++++++++++
 network-scripts/ifup      | 23 +++++++++++++++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100755 network-scripts/ifdown-ib

diff --git a/network-scripts/ifdown b/network-scripts/ifdown
index ec05891db..9d9f20df8 100755
--- a/network-scripts/ifdown
+++ b/network-scripts/ifdown
@@ -71,7 +71,11 @@ if [ ! -x ${OTHERSCRIPT} ]; then
 fi
 
 if [ ! -x ${OTHERSCRIPT} ]; then
-    OTHERSCRIPT="/etc/sysconfig/network-scripts/ifdown-eth"
+    if is_true "${PKEY}" && [ "${TYPE}" = "Infiniband" ] ; then
+        OTHERSCRIPT="/etc/sysconfig/network-scripts/ifdown-ib"
+    else
+        OTHERSCRIPT="/etc/sysconfig/network-scripts/ifdown-eth"
+    fi
 fi
 
 exec ${OTHERSCRIPT} ${CONFIG} $2
diff --git a/network-scripts/ifdown-ib b/network-scripts/ifdown-ib
new file mode 100755
index 000000000..dec996ac8
--- /dev/null
+++ b/network-scripts/ifdown-ib
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+cd /etc/sysconfig/network-scripts
+. ./network-functions
+CONFIG=${1}
+source_config
+
+if is_true "${PKEY}" && [ "${TYPE}" = "Infiniband" ] ; then
+    # IPoIB support
+    if [ -d /sys/devices/virtual/net/${DEVICE} ]; then
+        ip link del "${DEVICE}"
+    fi
+fi
+exit 0
diff --git a/network-scripts/ifup b/network-scripts/ifup
index 9c1380bb9..db86f2881 100755
--- a/network-scripts/ifup
+++ b/network-scripts/ifup
@@ -149,6 +149,29 @@ if is_true "${VLAN}" && is_false "$ISALIAS" && [ -n "$DEVICE" ]; then
         --prefix "/proc/sys/net/ipv6/conf/${DEVICE}"
 fi
 
+# IPoIB support
+if is_true "${PKEY}" && [ "${TYPE}" = "Infiniband" ] ; then
+    MATCH='^.+\.[0-9]{1,4}$'
+    if [[ "${DEVICE}" =~ $MATCH ]]; then
+        PHYSDEV=${DEVICE%.*}
+    fi
+    if ! modprobe ib_ipoib >/dev/null 2>&1 ; then
+        net_log $"No IPoIB support available in kernel for device ${DEVICE}"
+        exit 1
+    fi
+    if [ -d /sys/devices/virtual/net/${DEVICE} ]; then
+        check_device_down ${DEVICE} && { ip -o link set dev ${DEVICE} up; }
+    else
+        ip link add dev ${DEVICE} link ${PHYSDEV} type ipoib pkey ${PKEY_ID} || {
+            (/usr/bin/logger -p daemon.info -t ifup \$"ERROR: could not add
+            pkey ${PKEY_ID} as ${DEVICE} on dev ${PHYSDEV}" &) &
+            net_log $"ERROR: could not add pkey ${PKEY_ID} as ${DEVICE} on dev ${PHYSDEV}"
+        exit 1
+        }
+    fi
+    exit 0
+fi
+
 if [ "${BOOTPROTO}" = "bootp" -o "${BOOTPROTO}" = "dhcp" ]; then
     DYNCONFIG=true
 fi