I switched from OpenSuse to CentOs 6, But it give a very hard time
after installation it does not installed the wifi driver BCM43225 for my acer aspire 5741, then i tried different solution on google but with no luck,
with this solution http://wiki.centos.org/HowTos/Laptop...om?action=show

i have an error at Step 3 i.e $ make -C /lib/modules/`uname -r`/build/ M=`pwd`


make: Entering directory `/usr/src/kernels/2.6.32-279.1.1.el6.x86_64'
CFG80211 API is prefered for this kernel version
Using CFG80211 API
CC [M] /usr/local/src/hybrid-wl/src/shared/linux_osl.o
CC [M] /usr/local/src/hybrid-wl/src/wl/sys/wl_linux.o
CC [M] /usr/local/src/hybrid-wl/src/wl/sys/wl_iw.o
CC [M] /usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.o
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:64: warning: ‘enum tx_power_setting’ declared inside parameter list
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:64: warning: its scope is only this definition or declaration, which is probably not what you want
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1110: warning: ‘enum tx_power_setting’ declared inside parameter list
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1110: error: parameter 2 (‘type’) has incomplete type
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c: In function ‘wl_cfg80211_set_tx_power’:
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1123: error: ‘TX_POWER_AUTOMATIC’ undeclared (first use in this function)
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1123: error: (Each undeclared identifier is reported only once
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1123: error: for each function it appears in.)
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1125: error: ‘TX_POWER_LIMITED’ undeclared (first use in this function)
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1131: error: ‘TX_POWER_FIXED’ undeclared (first use in this function)
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c: At top level:
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1649: warning: initialization from incompatible pointer type
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1651: warning: initialization from incompatible pointer type
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1652: warning: initialization from incompatible pointer type
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1653: warning: initialization from incompatible pointer type
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1654: warning: initialization from incompatible pointer type
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1658: warning: initialization from incompatible pointer type
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c: In function ‘wl_inform_single_bss’:
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:1817: error: too few arguments to function ‘ieee80211_channel_to_frequency’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c: In function ‘wl_bss_roaming_done’:
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2117: warning: passing argument 2 of ‘cfg80211_roamed’ from incompatible pointer type
include/net/cfg80211.h:3035: note: expected ‘struct ieee80211_channel *’ but argument is of type ‘u8 *’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2117: warning: passing argument 4 of ‘cfg80211_roamed’ makes pointer from integer without a cast
include/net/cfg80211.h:3035: note: expected ‘const u8 *’ but argument is of type ‘s32’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2117: warning: passing argument 5 of ‘cfg80211_roamed’ makes integer from pointer without a cast
include/net/cfg80211.h:3035: note: expected ‘size_t’ but argument is of type ‘u8 *’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2117: warning: passing argument 6 of ‘cfg80211_roamed’ makes pointer from integer without a cast
include/net/cfg80211.h:3035: note: expected ‘const u8 *’ but argument is of type ‘s32’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2117: error: too few arguments to function ‘cfg80211_roamed’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c: In function ‘wl_bss_connect_done’:
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2149: warning: passing argument 2 of ‘cfg80211_roamed’ from incompatible pointer type
include/net/cfg80211.h:3035: note: expected ‘struct ieee80211_channel *’ but argument is of type ‘u8 *’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2149: warning: passing argument 4 of ‘cfg80211_roamed’ makes pointer from integer without a cast
include/net/cfg80211.h:3035: note: expected ‘const u8 *’ but argument is of type ‘s32’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2149: warning: passing argument 5 of ‘cfg80211_roamed’ makes integer from pointer without a cast
include/net/cfg80211.h:3035: note: expected ‘size_t’ but argument is of type ‘u8 *’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2149: warning: passing argument 6 of ‘cfg80211_roamed’ makes pointer from integer without a cast
include/net/cfg80211.h:3035: note: expected ‘const u8 *’ but argument is of type ‘s32’
/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.c:2149: error: too few arguments to function ‘cfg80211_roamed’
make[1]: *** [/usr/local/src/hybrid-wl/src/wl/sys/wl_cfg80211.o] Error 1
make: *** [_module_/usr/local/src/hybrid-wl] Error 2
make: Leaving directory `/usr/src/kernels/2.6.32-279.1.1.el6.x86_64'


please help me as i want to switch to CentOs....

Instead of attempting to compile the drivers yourself, maybe you could try the pre-compiled Broadcom wireless RPMs from http://atrpms.net.

Follow the instructions there to install atrpms and atrpm-repo RPMs, then simply use yum to install the Broadcom kernel modules:

yum install broadcom-wl-kmdl

This method has the big advantage of allowing new broadcom modules to be installed whenever a kernel update is released. The broadcom rpms from atrpms will be available within a few days of each kernel update, so you will want to wait until the new broadcom modules are ready before updating your kernel, but it sure beats having to re-compile and re-install every time a new kernel is released.

ITS GIVING ME ERROR AS "error: too few arguments to function ‘strnlen’"
SUGGEST ME A SOLUTION FOR THIS PROBLEM.

int apnlength;
u_char apn_name[]="LTE";
struct sockaddr_in ggsn,sgsn;
apnlength = strnlen(apn_name);