Merge branch 'mlxsw-Offload-FIFO'

Ido Schimmel says:

====================
mlxsw: Offload FIFO

Petr says:

If an ETS or PRIO band contains an offloaded qdisc, it is possible to
obtain offloaded counters for that band. However, some of the bands will
likely simply contain the default invisible FIFO qdisc, which does not
present the counters.

To remedy this situation, make FIFO offloadable, and offload it by mlxsw
when below PRIO and ETS for the sole purpose of providing counters for the
bands that do not include other qdiscs.

- In patch #1, FIFO is extended to support offloading.
- Patches #2 and #3 restructure bits of mlxsw to facilitate
  the offload logic.
- Patch #4 then implements the offload itself.
- Patch #5 changes the ETS selftest to use the new counters.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b6fedd54cd8e..654808bfad83 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -853,6 +853,7 @@ enum tc_setup_type {
 	TC_SETUP_FT,
 	TC_SETUP_QDISC_ETS,
 	TC_SETUP_QDISC_TBF,
+	TC_SETUP_QDISC_FIFO,
 };
 
 /* These structures hold the attributes of bpf state that are being passed
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 53946b509b51..341a66af8d59 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -881,4 +881,19 @@ struct tc_tbf_qopt_offload {
 	};
 };
 
+enum tc_fifo_command {
+	TC_FIFO_REPLACE,
+	TC_FIFO_DESTROY,
+	TC_FIFO_STATS,
+};
+
+struct tc_fifo_qopt_offload {
+	enum tc_fifo_command command;
+	u32 handle;
+	u32 parent;
+	union {
+		struct tc_qopt_offload_stats stats;
+	};
+};
+
 #endif