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Message-Id: <20231214135029.383595-1-tobias@waldekranz.com>
Date: Thu, 14 Dec 2023 14:50:21 +0100
From: Tobias Waldekranz <tobias@...dekranz.com>
To: davem@...emloft.net,
kuba@...nel.org
Cc: andrew@...n.ch,
f.fainelli@...il.com,
olteanv@...il.com,
netdev@...r.kernel.org
Subject: [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support
The majority of the changes (2/8) are about refactoring the existing
ethtool statistics support to make it possible to read individual
counters, rather than the whole set.
4/8 tries to collect all information about a stat in a single place
using a mapper macro, which is then used to generate the original list
of stats, along with a matching enum. checkpatch is less than amused
with this construct, but prior art exists (__BPF_FUNC_MAPPER in
include/uapi/linux/bpf.h, for example).
To support the histogram counters from the "rmon" group, we have to
change mv88e6xxx's configuration of them. Instead of counting rx and
tx, we restrict them to rx-only. 6/8 has the details.
With that in place, adding the actual counter groups is pretty
straight forward (5,7/8).
Tie it all together with a selftest (8/8).
v3 -> v4:
- Return size_t from mv88e6xxx_stats_get_stats
- Spelling errors in commit message of 6/8
- Improve selftest:
- Report progress per-bucket
- Test both ports in the pair
- Increase MTU, if required
v2 -> v3:
- Added 6/8
- Added 8/8
v1 -> v2:
- Added 1/6
- Added 3/6
- Changed prototype of stats operation to reflect the fact that the
number of read stats are returned, no errors
- Moved comma into MV88E6XXX_HW_STAT_MAPPER definition
- Avoid the construction of mapping table iteration which relied on
struct layouts outside of mv88e6xxx's control
Tobias Waldekranz (8):
net: dsa: mv88e6xxx: Push locking into stats snapshotting
net: dsa: mv88e6xxx: Create API to read a single stat counter
net: dsa: mv88e6xxx: Fix mv88e6352_serdes_get_stats error path
net: dsa: mv88e6xxx: Give each hw stat an ID
net: dsa: mv88e6xxx: Add "eth-mac" counter group support
net: dsa: mv88e6xxx: Limit histogram counters to ingress traffic
net: dsa: mv88e6xxx: Add "rmon" counter group support
selftests: forwarding: ethtool_rmon: Add histogram counter test
drivers/net/dsa/mv88e6xxx/chip.c | 392 ++++++++++++------
drivers/net/dsa/mv88e6xxx/chip.h | 31 +-
drivers/net/dsa/mv88e6xxx/global1.c | 7 +-
drivers/net/dsa/mv88e6xxx/serdes.c | 10 +-
drivers/net/dsa/mv88e6xxx/serdes.h | 8 +-
.../testing/selftests/net/forwarding/Makefile | 1 +
.../selftests/net/forwarding/ethtool_rmon.sh | 143 +++++++
tools/testing/selftests/net/forwarding/lib.sh | 9 +
8 files changed, 435 insertions(+), 166 deletions(-)
create mode 100755 tools/testing/selftests/net/forwarding/ethtool_rmon.sh
--
2.34.1
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