diff options
| author | Florian Westphal <fw@strlen.de> | 2016-04-24 21:38:14 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-04-26 21:53:05 +0200 |
| commit | f0cdf76c103ffa34ca5ac87dcdef7edffc722cbf (patch) | |
| tree | 893afe6a3b448bfeb0dd36cae35a6ce844230852 /Documentation/networking/netdev-features.txt | |
| parent | drivers: net: remove NETDEV_TX_LOCKED (diff) | |
| download | linux-f0cdf76c103ffa34ca5ac87dcdef7edffc722cbf.tar.xz linux-f0cdf76c103ffa34ca5ac87dcdef7edffc722cbf.zip | |
net: remove NETDEV_TX_LOCKED support
No more users in the tree, remove NETDEV_TX_LOCKED support.
Adds another hole in softnet_stats struct, but better than keeping
the unused collision counter around.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/netdev-features.txt')
| -rw-r--r-- | Documentation/networking/netdev-features.txt | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/Documentation/networking/netdev-features.txt b/Documentation/networking/netdev-features.txt index f310edec8a77..7413eb05223b 100644 --- a/Documentation/networking/netdev-features.txt +++ b/Documentation/networking/netdev-features.txt @@ -131,13 +131,11 @@ stack. Driver should not change behaviour based on them. * LLTX driver (deprecated for hardware drivers) -NETIF_F_LLTX should be set in drivers that implement their own locking in -transmit path or don't need locking at all (e.g. software tunnels). -In ndo_start_xmit, it is recommended to use a try_lock and return -NETDEV_TX_LOCKED when the spin lock fails. The locking should also properly -protect against other callbacks (the rules you need to find out). +NETIF_F_LLTX is meant to be used by drivers that don't need locking at all, +e.g. software tunnels. -Don't use it for new drivers. +This is also used in a few legacy drivers that implement their +own locking, don't use it for new (hardware) drivers. * netns-local device |