[NET]: note that NETIF_F_LLTX is deprecated

Am Freitag, 21. September 2007 schrieb Herbert Xu:
> Please don't use LLTX in new drivers.  We're trying to get rid
> of it since it's
>
> 1) unnecessary;
> 2) causes problems with AF_PACKET seeing things twice.

I suggest to document that LLTX is deprecated.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Documentation/networking/netdevices.txt

@@ -73,7 +73,8 @@ dev->hard_start_xmit:
 	has to lock by itself when needed. It is recommended to use a try lock
 	for this and return NETDEV_TX_LOCKED when the spin lock fails.
 	The locking there should also properly protect against 
-	set_multicast_list.
+	set_multicast_list. Note that the use of NETIF_F_LLTX is deprecated.
+	Dont use it for new drivers.
 
 	Context: Process with BHs disabled or BH (timer),
 	         will be called with interrupts disabled by netconsole.

include/linux/netdevice.h

@@ -449,7 +449,8 @@ struct net_device
 #define NETIF_F_HW_VLAN_FILTER	512	/* Receive filtering on VLAN */
 #define NETIF_F_VLAN_CHALLENGED	1024	/* Device cannot handle VLAN packets */
 #define NETIF_F_GSO		2048	/* Enable software GSO. */
-#define NETIF_F_LLTX		4096	/* LockLess TX */
+#define NETIF_F_LLTX		4096	/* LockLess TX - deprecated. Please */
+					/* do not use LLTX in new drivers */
 #define NETIF_F_NETNS_LOCAL	8192	/* Does not change network namespaces */
 #define NETIF_F_MULTI_QUEUE	16384	/* Has multiple TX/RX queues */
 #define NETIF_F_LRO		32768	/* large receive offload */