Julian Wiedmann 9297e0c189 net/af_iucv: don't use paged skbs for TX on HiperSockets ... commit dc5367bcc5 upstream. With commit e53743994e ("af_iucv: use paged SKBs for big outbound messages"), we transmit paged skbs for both of AF_IUCV's transport modes (IUCV or HiperSockets). The qeth driver for Layer 3 HiperSockets currently doesn't support NETIF_F_SG, so these skbs would just be linearized again by the stack. Avoid that overhead by using paged skbs only for IUCV transport. cc stable, since this also circumvents a significant skb leak when sending large messages (where the skb then needs to be linearized). Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Fixes: e53743994e ("af_iucv: use paged SKBs for big outbound messages") Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-01-19 20:18:04 +01:00
..
Kconfig	iucv: kernel option for z/VM IUCV and HiperSockets	2011-08-13 01:10:16 -07:00
Makefile	[S390]: Add AF_IUCV socket support	2007-02-08 13:51:54 -08:00
af_iucv.c	net/af_iucv: don't use paged skbs for TX on HiperSockets	2017-01-19 20:18:04 +01:00
iucv.c	s390/iucv: use basic blocks for iucv inline assemblies	2016-06-28 09:32:31 +02:00