From: Julian Wiedmann <jwi@linux.ibm.com>
Subject: s390/qeth: advertise IFF_UNICAST_FLT
Patch-mainline: v4.17-rc1
Git-commit: d3aacac4e47477ce26fe474c216f90baadcb2604
References: FATE#326350, LTC#169511, bsc#1113509
Summary: qeth: performance improvements
Description: This adds recent functional and performance improvements for the
qeth network driver.
Primarily this brings Scatter-Gather support for HiperSockets,
reduced CPU consumption in the L3 IPv4 transmit path for OSA,
improved Promiscuous Mode performance due to IFF_UNICAST_FLT,
support for Scatter-Gather on z/VM virtual NICs, and
support for delayed GRO flushing.
For sanity & stability reasons, this effectively constitutes a
backport of the qeth device driver from 4.19 mainline.
Upstream-Description:
s390/qeth: advertise IFF_UNICAST_FLT
qeth implements HW-based Unicast Filtering (via SETVMAC) on L2 devices.
Tell the stack, so it knows that receiving traffic for secondary
addresses doesn't require full-blown promiscuous mode.
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/s390/net/qeth_l2_main.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -987,6 +987,7 @@ static int qeth_l2_setup_netdev(struct q
return -ENODEV;
card->dev->ml_priv = card;
+ card->dev->priv_flags |= IFF_UNICAST_FLT;
card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
card->dev->mtu = card->info.initial_mtu;
card->dev->min_mtu = 64;