[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: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/networking/netdevices.txt b/Documentation/networking/netdevices.txt
index 9f7be9b..d0f71fc 100644 (file)
--- a/Documentation/networking/netdevices.txt
+++ b/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.

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index baa915f..2088097 100644 (file)
--- a/include/linux/netdevice.h
+++ b/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 */