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Commit 0b226497 authored by Perry Hung's avatar Perry Hung Committed by Greg Kroah-Hartman
Browse files

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: default avatarViresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarPerry Hung <perry@leaflabs.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 75a60ed2

drivers/staging/greybus/greybus_protocols.h

+2 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/staging/greybus/svc.c

+10 −0
Original line number Diff line number Diff line
@@ -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);