From f0cdf76c103ffa34ca5ac87dcdef7edffc722cbf Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Sun, 24 Apr 2016 21:38:14 +0200 Subject: 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 Signed-off-by: David S. Miller --- Documentation/networking/netdev-features.txt | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'Documentation/networking/netdev-features.txt') 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 -- cgit v1.2.3