上次通过更换内核实现成功编译驱动无线网卡，但是启动到系统原内核下依然没有bcm43142的驱动，遂准备在原内核下编译驱动，记录一下
ps：更推荐这种方法，避免因更换内核出现其他兼容性问题
1.准备驱动包
hybrid-v35_64-nodebug-pcoem-6_30_223_271.tar.gz
点我下载 密cmet
下载拷贝进u盘，将源码包拷贝至/usr
2.安装工具
安装gccyum install -y gcc，如已安装可跳过
安装内核对应版本的kernel-headers，kerner-devel，本次使用当前系统镜像作为yum源，所以版本也是一致的
[root@king ~]# yum list|grep kernel
kernel.x86_64 3.10.0-327.el7 @anaconda/7.2
kernel-devel.x86_64 3.10.0-327.el7 @rhel7.2_iso
kernel-headers.x86_64 3.10.0-327.el7 @rhel7.2_iso
3.编译源码与安装驱动
复制源码包并解压
[root@king ~]# mkdir -p /usr/local/other/wireless7_2
[root@king ~]# cp /usr/hybrid-v35_64-nodebug-pcoem-6_30_223_271.tar.gz /usr/local/other/wireless7_2
[root@king ~]# cd /usr/local/other/wireless7_2
[root@king wireless7_2]# tar zxf hybrid-v35_64-nodebug-pcoem-6_30_223_271.tar.gz
[root@king wireless7_2]# ls
hybrid-v35_64-nodebug-pcoem-6_30_223_271.tar.gz lib Makefile src
编译
[root@king wireless7_2]# make
KBUILD_NOPEDANTIC=1 make -C /lib/modules/`uname -r`/build M=`pwd`
make: *** /lib/modules/3.10.0-327.el7.x86_64/build: No such file or directory. Stop.
make: *** [all] Error 2
报错，分析错误原因，发现/lib/modules/3.10.0-327.el7.x86_64/build软链接失效，重做之
ln -s /usr/src/kernels/3.10.0-327.el7.x86_64/ /lib/modules/3.10.0-327.el7.x86_64/build #注意做软链接要写绝对路径
重新编译
[root@king wireless7_2]# make clean && make
KBUILD_NOPEDANTIC=1 make -C /lib/modules/`uname -r`/build M=`pwd` clean
make[1]: Entering directory `/usr/src/kernels/3.10.0-327.el7.x86_64'
CFG80211 API is prefered for this kernel version
/usr/local/other/wireless7_2/Makefile:85: Neither CFG80211 nor Wireless Extension is enabled in kernel
CLEAN /usr/local/other/wireless7_2/.tmp_versions
CLEAN /usr/local/other/wireless7_2/Module.symvers
make[1]: Leaving directory `/usr/src/kernels/3.10.0-327.el7.x86_64'
KBUILD_NOPEDANTIC=1 make -C /lib/modules/`uname -r`/build M=`pwd`
make[1]: Entering directory `/usr/src/kernels/3.10.0-327.el7.x86_64'
CFG80211 API is prefered for this kernel version
Using CFG80211 API
LD /usr/local/other/wireless7_2/built-in.o
CC [M] /usr/local/other/wireless7_2/src/shared/linux_osl.o
CC [M] /usr/local/other/wireless7_2/src/wl/sys/wl_linux.o
CC [M] /usr/local/other/wireless7_2/src/wl/sys/wl_iw.o
CC [M] /usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.o
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c: In function ‘wl_cfg80211_get_station’:
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:1460:20: error: ‘STATION_INFO_TX_BITRATE’ undeclared (first use in this function)
sinfo->filled |= STATION_INFO_TX_BITRATE;
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:1460:20: note: each undeclared identifier is reported only once for each function it appears in
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:1477:20: error: ‘STATION_INFO_SIGNAL’ undeclared (first use in this function)
sinfo->filled |= STATION_INFO_SIGNAL;
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c: At top level:
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:1799:2: warning: initialization from incompatible pointer type [enabled by default]
.get_station = wl_cfg80211_get_station,
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:1799:2: warning: (near initialization for ‘wl_cfg80211_ops.get_station’) [enabled by default]
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c: In function ‘wl_alloc_wdev’:
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:1894:22: error: incompatible types when assigning to type ‘const struct wiphy_wowlan_support *’ from type ‘struct wiphy_wowlan_support’
wdev->wiphy->wowlan = wl_wowlan_support;
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c: In function ‘wl_inform_single_bss’:
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:2037:3: error: incompatible type for argument 3 of ‘cfg80211_inform_bss’
(const u8 *)notify_ie, notify_ielen, signal, GFP_KERNEL);
^
In file included from /usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:33:0:
include/net/cfg80211.h:4029:1: note: expected ‘enum cfg80211_bss_frame_type’ but argument is of type ‘const u8 *’
cfg80211_inform_bss(struct wiphy *wiphy,
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:2037:3: warning: passing argument 7 of ‘cfg80211_inform_bss’ makes integer from pointer without a cast [enabled by default]
(const u8 *)notify_ie, notify_ielen, signal, GFP_KERNEL);
^
In file included from /usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:33:0:
include/net/cfg80211.h:4029:1: note: expected ‘u16’ but argument is of type ‘const u8 *’
cfg80211_inform_bss(struct wiphy *wiphy,
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:2037:3: warning: passing argument 8 of ‘cfg80211_inform_bss’ makes pointer from integer without a cast [enabled by default]
(const u8 *)notify_ie, notify_ielen, signal, GFP_KERNEL);
^
In file included from /usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:33:0:
include/net/cfg80211.h:4029:1: note: expected ‘const u8 *’ but argument is of type ‘size_t’
cfg80211_inform_bss(struct wiphy *wiphy,
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:2037:3: error: too few arguments to function ‘cfg80211_inform_bss’
(const u8 *)notify_ie, notify_ielen, signal, GFP_KERNEL);
^
In file included from /usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:33:0:
include/net/cfg80211.h:4029:1: note: declared here
cfg80211_inform_bss(struct wiphy *wiphy,
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c: In function ‘wl_notify_connect_status’:
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:2124:4: warning: passing argument 3 of ‘cfg80211_ibss_joined’ makes pointer from integer without a cast [enabled by default]
cfg80211_ibss_joined(ndev, (u8 *)&wl->bssid, GFP_KERNEL);
^
In file included from /usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:33:0:
include/net/cfg80211.h:4219:6: note: expected ‘struct ieee80211_channel *’ but argument is of type ‘unsigned int’
void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:2124:4: error: too few arguments to function ‘cfg80211_ibss_joined’
cfg80211_ibss_joined(ndev, (u8 *)&wl->bssid, GFP_KERNEL);
^
In file included from /usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:33:0:
include/net/cfg80211.h:4219:6: note: declared here
void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
^
make[2]: *** [/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.o] Error 1
make[1]: *** [_module_/usr/local/other/wireless7_2] Error 2
make[1]: Leaving directory `/usr/src/kernels/3.10.0-327.el7.x86_64'
make: *** [all] Error 2
发现报错，依次排错
由报错信息知wl_cfg80211_hybrid.c文件第1460，1477，1894，2037，2124行有错，做出如下更改
[root@king wireless7_2]# vim src/wl/sys/wl_cfg80211_hybrid.c
1460 // sinfo->filled |= STATION_INFO_TX_BITRATE;
1477 // sinfo->filled |= STATION_INFO_SIGNAL;
1894 wdev->wiphy->wowlan = &wl_wowlan_support;
2035 cbss = cfg80211_inform_bss(wiphy, channel, CFG80211_BSS_FTYPE_UNKNOWN, (const u8 *)(bi->BSSID.octet),
2036 0, beacon_proberesp->capab_info, beacon_proberesp->beacon_int,
2037 (const u8 *)notify_ie, notify_ielen, signal, GFP_KERNEL);
2124 cfg80211_ibss_joined(ndev, (u8 *)&wl->bssid, &wl->conf->channel, GFP_KERNEL);
tips：vim里按冒号输入set nu显示行号，冒号后接行号定位到该行
重新编译
[root@king wireless7_2]# make clean && make
KBUILD_NOPEDANTIC=1 make -C /lib/modules/`uname -r`/build M=`pwd` clean
make[1]: Entering directory `/usr/src/kernels/3.10.0-327.el7.x86_64'
CFG80211 API is prefered for this kernel version
/usr/local/other/wireless7_2/Makefile:85: Neither CFG80211 nor Wireless Extension is enabled in kernel
CLEAN /usr/local/other/wireless7_2/.tmp_versions
CLEAN /usr/local/other/wireless7_2/Module.symvers
make[1]: Leaving directory `/usr/src/kernels/3.10.0-327.el7.x86_64'
KBUILD_NOPEDANTIC=1 make -C /lib/modules/`uname -r`/build M=`pwd`
make[1]: Entering directory `/usr/src/kernels/3.10.0-327.el7.x86_64'
CFG80211 API is prefered for this kernel version
Using CFG80211 API
LD /usr/local/other/wireless7_2/built-in.o
CC [M] /usr/local/other/wireless7_2/src/shared/linux_osl.o
CC [M] /usr/local/other/wireless7_2/src/wl/sys/wl_linux.o
CC [M] /usr/local/other/wireless7_2/src/wl/sys/wl_iw.o
CC [M] /usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.o
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:1799:2: warning: initialization from incompatible pointer type [enabled by default]
.get_station = wl_cfg80211_get_station,
^
/usr/local/other/wireless7_2/src/wl/sys/wl_cfg80211_hybrid.c:1799:2: warning: (near initialization for ‘wl_cfg80211_ops.get_station’) [enabled by default]
LD [M] /usr/local/other/wireless7_2/wl.o
Building modules, stage 2.
CFG80211 API is prefered for this kernel version
Using CFG80211 API
MODPOST 1 modules
CC /usr/local/other/wireless7_2/wl.mod.o
LD [M] /usr/local/other/wireless7_2/wl.ko
make[1]: Leaving directory `/usr/src/kernels/3.10.0-327.el7.x86_64'
没有报错
[root@king wireless7_2]# ls
built-in.o modules.order wl.mod.c
hybrid-v35_64-nodebug-pcoem-6_30_223_271.tar.gz Module.symvers wl.mod.o
lib src wl.o
Makefile wl.ko
发现已生成驱动文件wl.ko
安装驱动文件
[root@king wireless7_2]# make install
install -D -m 755 wl.ko /lib/modules/`uname -r`/kernel/drivers/net/wireless
4.驱动文件加载和配置
加载驱动文件
[root@king wireless7_2]# insmod wl.ko
[root@king wireless7_2]# lsmod|grep wl
wl 6445574 0
cfg80211 572836 1 wl
发现右上角出现wifi选项，驱动加载成功，可以连接wifi啦，Enjoying it！
参考
1
2
http://blog.51cto.com/kking/2096757