From: Vincent Mailhol Date: Wed, 3 Nov 2021 16:44:27 +0000 (+0900) Subject: iplink_can: print brp and dbrp bittiming variables X-Git-Tag: v5.16.0~17^2~1 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f7bb8d842b158169e0950b9a6ac642877e044bd;p=thirdparty%2Fiproute2.git iplink_can: print brp and dbrp bittiming variables Report the value of the bit-rate prescaler (brp) for both the nominal and the data bittiming. Currently, only the constant brp values (brp_{min,max,inc}) are being reported. Also, brp is the only member of struct can_bittiming not being reported. Noticeably, brp could be calculated by hand from the other bittiming parameters with below formula: brp = clock * tq / 1000000000 with clock in hertz and tq in nano second (thus the need of a 1 billion factor to convert it back to second). But because above formula is not so trivial to remember and is subjected to rounding errors, it makes sense to directly output {d,}bpr. Signed-off-by: Vincent Mailhol Signed-off-by: David Ahern --- diff --git a/ip/iplink_can.c b/ip/iplink_can.c index c01652379..cf6b06b89 100644 --- a/ip/iplink_can.c +++ b/ip/iplink_can.c @@ -344,6 +344,7 @@ static void can_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) print_uint(PRINT_ANY, "phase_seg2", " phase-seg2 %u", bt->phase_seg2); print_uint(PRINT_ANY, "sjw", " sjw %u", bt->sjw); + print_uint(PRINT_ANY, "brp", " brp %u", bt->brp); close_json_object(); } @@ -419,6 +420,7 @@ static void can_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) print_uint(PRINT_ANY, "phase_seg2", " dphase-seg2 %u", dbt->phase_seg2); print_uint(PRINT_ANY, "sjw", " dsjw %u", dbt->sjw); + print_uint(PRINT_ANY, "brp", " dbrp %u", dbt->brp); close_json_object(); }