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Message-Id: <20230123212501.1471308-1-sudheer.mogilappagari@intel.com>
Date: Mon, 23 Jan 2023 13:24:59 -0800
From: Sudheer Mogilappagari <sudheer.mogilappagari@...el.com>
To: netdev@...r.kernel.org
Cc: kuba@...nel.org, mkubecek@...e.cz, sridhar.samudrala@...el.com,
anthony.l.nguyen@...el.com
Subject: [RESEND PATCH ethtool-next v6 0/2] add netlink support for rss get
These patches add netlink based handler to fetch RSS information
using "ethtool -x <eth> [context %d]" command.
Output without --json option
$ethtool -x eno2
RX flow hash indirection table for eno2 with 8 RX ring(s):
0: 0 0 0 0 0 0 0 0
8: 1 1 1 1 1 1 1 1
...skip similar lines...
120: 7 7 7 7 7 7 7 7
RSS hash key:
be:c3:13:a6:59:9a:c3:c5:d8:60:75:2b:4c:b2:12:cc:5c:4e:34:
8a:f9:ab:16:c7:19:5d:ab:1d:b5:c1:c7:57:c7:a2:e1:2b:e3:ea:
02:60:88:8e:96:ef:2d:64:d2:de:2c:16:72:b6
RSS hash function:
toeplitz: on
xor: off
crc32: off
Sample output with json option:
$ethtool --json -x eno2
[ {
"ifname": "eno2",
"rss-indirection-table": [ 0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,
...skip similar lines...
7,7,7,7,7,7,7,7 ],
"rss-hash-key": [ 190,195,19,166,..],
"rss-hash-function": "toeplitz"
} ]
Signed-off-by: Sudheer Mogilappagari <sudheer.mogilappagari@...el.com>
---
v6:
- Added break after printing hash function in json output
- Coding style fixes
- Add v6 changelog in cover-letter and resend
v5:
- Fixed use of same socket for fetching rings info and RSS info
- Added checks to test if a field exists before accessing reply message
- Refactor print functions and avoid use of ethtool_rxfh structure
v4:
-Fixed hash function values in example output of commit message.
v3:
-Made hash key as an array of ints.
-Skip json field when not supported.
-Made hash function values as true/false instead of on/off
-Formatted key strings as per review comments.
v2:
-Added json support
---
Sudheer Mogilappagari (2):
Move code that print rss info into common file
netlink: add netlink handler for get rss (-x)
Makefile.am | 2 +-
common.c | 36 +++++++
common.h | 6 +-
ethtool.c | 44 ++------
netlink/desc-ethtool.c | 11 ++
netlink/extapi.h | 2 +
netlink/rss.c | 231 +++++++++++++++++++++++++++++++++++++++++
7 files changed, 295 insertions(+), 37 deletions(-)
create mode 100644 netlink/rss.c
--
2.31.1
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