From: Jakub Kicinski <jakub.kicinski@netronome.com>
Date: Thu, 18 Jan 2018 02:51:06 +0000 (-0800)
Subject: nfp: bpf: disable all ctrl vNIC capabilities
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=81bd5ded60c8a369fee6c4d94a0bcb84ad9ce56a;p=openwrt%2Fstaging%2Fblogic.git

nfp: bpf: disable all ctrl vNIC capabilities

BPF firmware currently exposes IRQ moderation capability.
The driver will make use of it by default, inserting 50 usec
delay to every control message exchange.  This cuts the number
of messages per second we can exchange by almost half.

None of the other capabilities make much sense for BPF control
vNIC, either.  Disable them all.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.c b/drivers/net/ethernet/netronome/nfp/bpf/main.c
index 5f021d0c88a4..4ee11bf2aed7 100644
--- a/drivers/net/ethernet/netronome/nfp/bpf/main.c
+++ b/drivers/net/ethernet/netronome/nfp/bpf/main.c
@@ -389,7 +389,7 @@ const struct nfp_app_type app_bpf = {
 	.id		= NFP_APP_BPF_NIC,
 	.name		= "ebpf",
 
-	.ctrl_cap_mask	= ~0U,
+	.ctrl_cap_mask	= 0,
 
 	.init		= nfp_bpf_init,
 	.clean		= nfp_bpf_clean,