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authorEric W. Biederman <ebiederm@xmission.com>2014-03-14 20:51:52 -0700
committerDavid S. Miller <davem@davemloft.net>2014-03-17 15:48:12 -0400
commit9c62a68d13119a1ca9718381d97b0cb415ff4e9d (patch)
treeaae7c0ffaa451dc44afbbba9c37780e9c12bd1fc /drivers
parente1bd4d3d7dd2a4a0e731ffe07c439927c23f16ea (diff)
downloadlinux-9c62a68d13119a1ca9718381d97b0cb415ff4e9d.tar.bz2
netpoll: Remove dead packet receive code (CONFIG_NETPOLL_TRAP)
The netpoll packet receive code only becomes active if the netpoll rx_skb_hook is implemented, and there is not a single implementation of the netpoll rx_skb_hook in the kernel. All of the out of tree implementations I have found all call netpoll_poll which was removed from the kernel in 2011, so this change should not add any additional breakage. There are problems with the netpoll packet receive code. __netpoll_rx does not call dev_kfree_skb_irq or dev_kfree_skb_any in hard irq context. netpoll_neigh_reply leaks every skb it receives. Reception of packets does not work successfully on stacked devices (aka bonding, team, bridge, and vlans). Given that the netpoll packet receive code is buggy, there are no out of tree users that will be merged soon, and the code has not been used for in tree for a decade let's just remove it. Reverting this commit can server as a starting point for anyone who wants to resurrect netpoll packet reception support. Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/Kconfig5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 494b888a6568..89402c3b64f8 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -177,11 +177,6 @@ config NETCONSOLE_DYNAMIC
config NETPOLL
def_bool NETCONSOLE
-config NETPOLL_TRAP
- bool "Netpoll traffic trapping"
- default n
- depends on NETPOLL
-
config NET_POLL_CONTROLLER
def_bool NETPOLL