Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
rtw88(4)	       FreeBSD Kernel Interfaces Manual		      rtw88(4)

NAME
     rtw88 -- Realtek IEEE 802.11n/ac wireless network driver

SYNOPSIS
     The driver	will auto-load without any user	interaction using devmatch(8)
     if	enabled	in rc.conf(5).

     Only if auto-loading is explicitly	disabled, place	the following lines in
     rc.conf(5)	to manually load the driver as a module	at boot	time:

	   kld_list="${kld_list} if_rtw88"

     The driver	should automatically load any rtw88fw(4) firmware needed for
     the particular chipset.

     It	is discouraged to load the driver from loader(8).

DESCRIPTION
     The rtw88 driver is derived from Realtek's	Linux rtw88 driver and pro-
     vides support for the following chipsets:

	   Realtek 802.11n wireless 8723de (RTL8723DE)
	   Realtek 802.11ac wireless 8821ce (RTL8821CE)
	   Realtek 802.11ac wireless 8822be (RTL8822BE)
	   Realtek 802.11ac wireless 8822ce (RTL8822CE)

     The driver	uses the linuxkpi_wlan and linuxkpi compat framework to	bridge
     between the Linux and native FreeBSD driver code as well as to the	native
     net80211(4) wireless stack.

     While rtw88 supports all 802.11 a/b/g/n and ac the	compatibility code
     currently only supports 802.11 a/b/g modes.  Support for 802.11 n/ac is
     to	come.

LOADER TUNABLES
     compat.linuxkpi.skb.mem_limit
	     If	you are	running	a 64bit	system with more than 4GB of main mem-
	     ory you need to set this tunable to 1 in loader.conf(5) and re-
	     boot once to make it effective.  This tunable will	work around a
	     problem with DMA and limit	allocations for	network	buffer memory
	     to	the lower 32bit	of physical memory and make the	driver work.

BUGS
     Certainly.

     Does not seem to work (reliably) on machines with more than 4GB of	main
     memory.  See in the LOADER	TUNABLES section above.

SEE ALSO
     rtw88fw(4), wlan(4), ifconfig(8), wpa_supplicant(8)

HISTORY
     The rtw88 driver first appeared in	FreeBSD	14.0.

FreeBSD	13.0			August 7, 2022			  FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | LOADER TUNABLES | BUGS | SEE ALSO | HISTORY

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=rtw88&sektion=4&manpath=FreeBSD+13.2-RELEASE+and+Ports>

home | help