iproute2: Add support for CAN presume-ack feature

This patch makes 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>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>

diff --git a/ip/iplink_can.c b/ip/iplink_can.c
index 5b924265e45ea10ee4f8a082129838717bfebd2a..fb5033218cff456fa33f1f0a15dee109d61fc065 100644 (file)
--- a/ip/iplink_can.c
+++ b/ip/iplink_can.c
@@ -37,6 +37,7 @@ static void print_usage(FILE *f)
                "\t[ one-shot { on | off } ]\n"
                "\t[ berr-reporting { on | off } ]\n"
                "\t[ fd { on | off } ]\n"
+               "\t[ presume-ack { on | off } ]\n"
                "\n"
                "\t[ restart-ms TIME-MS ]\n"
                "\t[ restart ]\n"
@@ -99,6 +100,7 @@ static void print_ctrlmode(FILE *f, __u32 cm)
        _PF(CAN_CTRLMODE_ONE_SHOT, "ONE-SHOT");
        _PF(CAN_CTRLMODE_BERR_REPORTING, "BERR-REPORTING");
        _PF(CAN_CTRLMODE_FD, "FD");
+       _PF(CAN_CTRLMODE_PRESUME_ACK, "PRESUME-ACK");
 #undef _PF
        if (cm)
                fprintf(f, "%x", cm);
@@ -201,6 +203,10 @@ static int can_parse_opt(struct link_util *lu, int argc, char **argv,
                        NEXT_ARG();
                        set_ctrlmode("fd", *argv, &cm,
                                     CAN_CTRLMODE_FD);
+               } 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;