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[net-next,12/12] nfp: bpf: disable all ctrl vNIC capabilities

Message ID 20180118025106.30427-13-jakub.kicinski@netronome.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series [net-next,01/12] nfp: core: make scalar CPP helpers fail on short accesses | expand

Commit Message

Jakub Kicinski Jan. 18, 2018, 2:51 a.m. UTC 
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>
---
 drivers/net/ethernet/netronome/nfp/bpf/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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,