netdev - Re: [PATCH net-next 7/8] net/mlx5e: Support offload cls

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Date:	Tue, 1 Mar 2016 18:50:57 +0200
From:	Amir Vadai <amir@...ai.me>
To:	Jiri Pirko <jiri@...nulli.us>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Or Gerlitz <ogerlitz@...lanox.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Saeed Mahameed <saeedm@...lanox.com>,
	Hadar Har-Zion <hadarh@...lanox.com>,
	Jiri Pirko <jiri@...lanox.com>
Subject: Re: [PATCH net-next 7/8] net/mlx5e: Support offload cls_flower with
 drop action

On Tue, Mar 01, 2016 at 03:55:48PM +0100, Jiri Pirko wrote:
> Tue, Mar 01, 2016 at 03:24:49PM CET, amir@...ai.me wrote:
> >Parse tc_cls_flower_offload into device specific commands and program
> >the hardware to classify and act accordingly.
> >
> >For example, to drop ICMP (ip_proto 1) packets from specific smac, dmac,
> >src_ip, src_ip, arriving to interface ens9:
> >
> > # tc qdisc add dev ens9 ingress
> >
> > # tc filter add dev ens9 protocol ip parent ffff: \
> >     flower ip_proto 1 \
> >     dst_mac 7c:fe:90:69:81:62 src_mac 7c:fe:90:69:81:56 \
> >     dst_ip 11.11.11.11 src_ip 11.11.11.12 indev ens9 \
> >     action drop
> >
> >Signed-off-by: Amir Vadai <amir@...ai.me>
> >Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
> >---
> > drivers/net/ethernet/mellanox/mlx5/core/en_main.c |   9 +
> > drivers/net/ethernet/mellanox/mlx5/core/en_tc.c   | 287 ++++++++++++++++++++++
> > drivers/net/ethernet/mellanox/mlx5/core/en_tc.h   |   5 +
> > 3 files changed, 301 insertions(+)
> >
> >diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> >index cb02b4c..1d1da94 100644
> >--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> >+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> >@@ -1889,6 +1889,15 @@ static int mlx5e_ndo_setup_tc(struct net_device *dev, u32 handle,
> > 		goto mqprio;
> > 
> > 	switch (tc->type) {
> >+	case TC_SETUP_CLSFLOWER:
> >+		switch (tc->cls_flower->command) {
> >+		case TC_CLSFLOWER_REPLACE:
> >+			return mlx5e_configure_flower(priv, proto, tc->cls_flower);
> >+		case TC_CLSFLOWER_DESTROY:
> >+			return mlx5e_delete_flower(priv, tc->cls_flower);
> >+		default:
> >+			return -EINVAL;
> 
> No need to default case here is you change "command" to enum as I
> suggested it the reply to patch 1.
ack