Add documentation for the latest options, offload and txtime-delay, to the
taprio manpage.
This also adds an example to run tc in txtime offload mode.
Signed-off-by: Vedang Patel <vedang.pa...@intel.com>
---
man/man8/tc-taprio.8 | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/man/man8/tc-taprio.8 b/man/man8/tc-taprio.8
index 850be9b0..5209c6ad 100644
--- a/man/man8/tc-taprio.8
+++ b/man/man8/tc-taprio.8
@@ -112,6 +112,23 @@ means that traffic class 0 is "active" for that schedule
entry.
long that state defined by <command> and <gate mask> should be held
before moving to the next entry.
+.TP
+offload
+.br
+Specifies the offload mode for taprio. If set to 1, it will try to offload the
+schedule to be run on the network controller. Hardware and driver support
+needed. If set to 2, txtime offload mode is enabled which will
+utilize the ETF qdisc to set the transmit of the packets.
+
+.TP
+txtime-delay
+.br
+This parameter is specific to the txtime offload mode. It specifies the maximum
+time a packet might take to reach the network card from the taprio qdisc. The
+value should always be greater than the delta specified in the
+.BR etf(8)
+qdisc.
+
.SH EXAMPLES
The following example shows how an traffic schedule with three traffic
@@ -137,6 +154,26 @@ reference CLOCK_TAI. The schedule is composed of three
entries each of
clockid CLOCK_TAI
.EE
+Following is an example to enable the txtime offload mode in taprio. See
+.BR etf(8)
+for more information about configuring the ETF qdisc.
+
+.EX
+# tc qdisc replace dev eth0 parent root handle 100 taprio \\
+ num_tc 3 \\
+ map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 \\
+ queues 1@0 1@0 1@0 \\
+ base-time 1528743495910289987 \\
+ sched-entry S 01 300000 \\
+ sched-entry S 02 300000 \\
+ sched-entry S 04 400000 \\
+ offload 2 \\
+ txtime-delay 200000 \\
+ clockid CLOCK_TAI
+
+# tc qdisc replace dev $IFACE parent 100:1 etf skip_skb_check \\
+ offload delta 200000 clockid CLOCK_TAI
+.EE
.SH AUTHORS
Vinicius Costa Gomes <vinicius.go...@intel.com>
--
2.17.0
