[iproute2 2/2] iplink: Support for CAN presume-ack feature

[Nikita Edward Baruzdin <nebaruzdin@gmail.com>]

This patch makes the newly introduced CAN_CTRLMODE_PRESUME_ACK netlink
feature configurable. When enabled, the feature sets CAN controller in
mode in which acknowledgement absence is ignored.

Signed-off-by: Nikita Edward Baruzdin <nebaruzdin@gmail.com>
---
 ip/iplink_can.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ip/iplink_can.c b/ip/iplink_can.c
index 5674358..01d8131 100644
--- a/ip/iplink_can.c
+++ b/ip/iplink_can.c
@@ -32,6 +32,7 @@ static void usage(void)
 	        "\t[ triple-sampling { on | off } ]\n"
 	        "\t[ one-shot { on | off } ]\n"
 	        "\t[ berr-reporting { on | off } ]\n"
+	        "\t[ presume-ack { on | off } ]\n"
 		"\n"
 	        "\t[ restart-ms TIME-MS ]\n"
 	        "\t[ restart ]\n"
@@ -88,6 +89,7 @@ static void print_ctrlmode(FILE *f, __u32 cm)
 	_PF(CAN_CTRLMODE_3_SAMPLES, "TRIPLE-SAMPLING");
 	_PF(CAN_CTRLMODE_ONE_SHOT, "ONE-SHOT");
 	_PF(CAN_CTRLMODE_BERR_REPORTING, "BERR-REPORTING");
+	_PF(CAN_CTRLMODE_PRESUME_ACK, "PRESUME-ACK");
 #undef _PF
 	if (cm)
 		fprintf(f, "%x", cm);
@@ -154,6 +156,10 @@ static int can_parse_opt(struct link_util *lu, int argc, char **argv,
 			NEXT_ARG();
 			set_ctrlmode("berr-reporting", *argv, &cm,
 				     CAN_CTRLMODE_BERR_REPORTING);
+		} else if (matches(*argv, "presume-ack") == 0) {
+			NEXT_ARG();
+			set_ctrlmode("presume-ack", *argv, &cm,
+				     CAN_CTRLMODE_PRESUME_ACK);
 		} else if (matches(*argv, "restart") == 0) {
 			__u32 val = 1;
 
-- 
2.0.2