From: Perry Hung <perry@leaflabs.com>
Date: Fri, 24 Jul 2015 23:02:34 +0000 (-0400)
Subject: greybus: svc: add flags and traffic class parameter to connection create op
X-Git-Tag: v4.9-rc1~119^2~378^2~21^2~1319
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e50b7be565a888ff0b1ac38247cc3c34e1f9c2f7;p=karo-tx-linux.git

greybus: svc: add flags and traffic class parameter to connection create op

The AP needs to be able to specify L4 CPort flags and traffic class
parameters on a connection-by-connection basis. Extend the connection
create operation to accept these. Since there's no policy to decide
these, fix them at TC0 with end-to-end-flow control, controlled segment
dropping, and CPort safety valve enabled.

Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
---

diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h
index 5b97073f4100..e2d38dfe06b6 100644
--- a/drivers/staging/greybus/greybus_protocols.h
+++ b/drivers/staging/greybus/greybus_protocols.h
@@ -606,6 +606,8 @@ struct gb_svc_conn_create_request {
 	__u16	cport1_id;
 	__u8	intf2_id;
 	__u16	cport2_id;
+	__u8	tc;
+	__u8	flags;
 };
 /* connection create response has no payload */
 
diff --git a/drivers/staging/greybus/svc.c b/drivers/staging/greybus/svc.c
index b718a881a7e3..b94a84aca0d8 100644
--- a/drivers/staging/greybus/svc.c
+++ b/drivers/staging/greybus/svc.c
@@ -9,6 +9,10 @@
 
 #include "greybus.h"
 
+#define CPORT_FLAGS_E2EFC       (1)
+#define CPORT_FLAGS_CSD_N       (2)
+#define CPORT_FLAGS_CSV_N       (4)
+
 struct gb_svc {
 	struct gb_connection	*connection;
 	u8			version_major;
@@ -98,6 +102,12 @@ static int connection_create_operation(struct gb_svc *svc,
 	request.cport1_id = cport1_id;
 	request.intf2_id = intf2_id;
 	request.cport2_id = cport2_id;
+	/*
+	 * XXX: fix connections paramaters to TC0 and all CPort flags
+	 * for now.
+	 */
+	request.tc = 0;
+	request.flags = CPORT_FLAGS_CSV_N | CPORT_FLAGS_E2EFC;
 
 	return gb_operation_sync(svc->connection, GB_SVC_TYPE_CONN_CREATE,
 				 &request, sizeof(request), NULL, 0);