From 0db73d6ac2f75857504ac2ba5a71c0f9b395cfd0 Mon Sep 17 00:00:00 2001
From: Carlos Garces <carlos.garces@gmail.com>
Date: Wed, 23 Oct 2019 20:00:07 +0200
Subject: [PATCH] Fix compilation issue with kernel < 4.9

---
 .travis.yml                   | 52 +++++++++--------------------------
 os_dep/linux/ioctl_cfg80211.c |  2 ++
 os_dep/linux/os_intfs.c       |  3 +-
 os_dep/osdep_service.c        |  6 ++--
 4 files changed, 21 insertions(+), 42 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index a8cc75d..b09e171 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
 language: c
 compiler: gcc
 sudo: required
-dist: xenial
+dist: bionic
 
-before_install:
+install:
   - export ALL_DEB=$(wget --quiet -O - ${KERNEL_URL}v${KVER}/ | grep -o 'href=".*"' | grep -m1 all | cut -d '"' -f 2)
   - export KVER_BUILD=$(echo $ALL_DEB | cut -d '_' -f 1 | cut -c15-)
   - wget ${KERNEL_URL}v${KVER}/$(wget --quiet -O - ${KERNEL_URL}v${KVER}/ | grep -o 'href=".*"' | grep headers | grep generic | grep -m1 amd64 | cut -d '"' -f 2)
@@ -22,65 +22,39 @@ matrix:
       addons:
         apt:
           sources:
-            - sourceline: 'ppa:ondrej/nginx-mainline'
+            - ubuntu-toolchain-r-test
           packages:
-            - libssl1.1
-      env: COMPILER=gcc-5 KVER=5.3
+            - gcc-5
+      env: COMPILER=gcc-5 KVER=5.3.7
     - compiler: gcc
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:ondrej/nginx-mainline'
           packages:
             - gcc-6
-            - libssl1.1
-      env: COMPILER=gcc-6 KVER=5.3
+      env: COMPILER=gcc-6 KVER=5.3.7
+    - compiler: gcc
+      env: COMPILER=gcc-7 KVER=5.3.7
     - compiler: gcc
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:ondrej/nginx-mainline'
           packages:
-            - gcc-7
-            - libssl1.1
-      env: COMPILER=gcc-7 KVER=5.3
-    - compiler: gcc
-      addons:
-        apt:
-          sources:
-            - sourceline: 'ppa:ondrej/nginx-mainline'
-          packages:
-            - libssl1.1
-      env: COMPILER=gcc-5 KVER=4.19.45
+            - gcc-5
+      env: COMPILER=gcc-5 KVER=4.19.67
     - compiler: gcc
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:ondrej/nginx-mainline'
           packages:
             - gcc-6
-            - libssl1.1
-      env: COMPILER=gcc-6 KVER=4.19.45
+      env: COMPILER=gcc-6 KVER=4.19.67
     - compiler: gcc
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:ondrej/nginx-mainline'
-          packages:
-            - gcc-7
-            - libssl1.1
       env: COMPILER=gcc-7 KVER=4.19.67
     - compiler: gcc
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:ondrej/nginx-mainline'
-          packages:
-            - gcc-7
-            - libssl1.1
       env: COMPILER=gcc-7 KVER=4.15.18
+    - compiler: gcc
+      env: COMPILER=gcc-7 KVER=4.9.197
diff --git a/os_dep/linux/ioctl_cfg80211.c b/os_dep/linux/ioctl_cfg80211.c
index 4e108fe..3c18696 100644
--- a/os_dep/linux/ioctl_cfg80211.c
+++ b/os_dep/linux/ioctl_cfg80211.c
@@ -4165,9 +4165,11 @@ static int rtw_cfg80211_add_monitor_if(_adapter *padapter, char *name, struct ne
 		ret = -ENOMEM;
 		goto out;
 	}
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0))
 	mon_ndev->min_mtu = WLAN_MIN_ETHFRM_LEN;
 	mon_ndev->mtu = WLAN_DATA_MAXLEN;
 	mon_ndev->max_mtu = WLAN_DATA_MAXLEN;
+#endif
 
 	mon_ndev->type = ARPHRD_IEEE80211_RADIOTAP;
 	strncpy(mon_ndev->name, name, IFNAMSIZ);
diff --git a/os_dep/linux/os_intfs.c b/os_dep/linux/os_intfs.c
index f0fe633..9c9229e 100644
--- a/os_dep/linux/os_intfs.c
+++ b/os_dep/linux/os_intfs.c
@@ -1477,10 +1477,11 @@ struct net_device *rtw_init_netdev(_adapter *old_padapter)
 	if (!pnetdev)
 		return NULL;
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0))
 	pnetdev->min_mtu = WLAN_MIN_ETHFRM_LEN;
 	pnetdev->mtu = WLAN_DATA_MAXLEN;
 	pnetdev->max_mtu = WLAN_DATA_MAXLEN;
-
+#endif
 	padapter = rtw_netdev_priv(pnetdev);
 	padapter->pnetdev = pnetdev;
 
diff --git a/os_dep/osdep_service.c b/os_dep/osdep_service.c
index d333b1f..c295eee 100644
--- a/os_dep/osdep_service.c
+++ b/os_dep/osdep_service.c
@@ -2059,10 +2059,11 @@ struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv, void *old_p
 	if (!pnetdev)
 		goto RETURN;
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0))
 	pnetdev->min_mtu = WLAN_MIN_ETHFRM_LEN;
 	pnetdev->mtu = WLAN_MAX_ETHFRM_LEN;
 	pnetdev->max_mtu = WLAN_DATA_MAXLEN;
-
+#endif
 	pnpi = netdev_priv(pnetdev);
 	pnpi->priv = old_priv;
 	pnpi->sizeof_priv = sizeof_priv;
@@ -2084,10 +2085,11 @@ struct net_device *rtw_alloc_etherdev(int sizeof_priv)
 	if (!pnetdev)
 		goto RETURN;
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0))
 	pnetdev->min_mtu = WLAN_MIN_ETHFRM_LEN;
 	pnetdev->mtu = WLAN_MAX_ETHFRM_LEN;
 	pnetdev->max_mtu = WLAN_DATA_MAXLEN;
-
+#endif
 	pnpi = netdev_priv(pnetdev);
 
 	pnpi->priv = rtw_zvmalloc(sizeof_priv);