6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jakub Kicinski <kuba@xxxxxxxxxx>
[ Upstream commit 244f8aa46fa9e2f4ea5fe0e04988b395d5e30fc7 ]
Commit ec6e57beaf8b ("ethtool: rss: don't report key if device
doesn't support it") intended to stop reporting key fields for
additional rss contexts if device has a global hashing key.
Later we added dump support and the filtering wasn't properly
added there. So we end up reporting the key fields in dumps
but not in dos:
# ./pyynl/cli.py --spec netlink/specs/ethtool.yaml --do rss-get \
--json '{"header": {"dev-index":2}, "context": 1 }'
{
"header": { ... },
"context": 1,
"indir": [0, 1, 2, 3, ...]]
}
# ./pyynl/cli.py --spec netlink/specs/ethtool.yaml --dump rss-get
[
... snip context 0 ...
{ "header": { ... },
"context": 1,
"indir": [0, 1, 2, 3, ...],
-> "input_xfrm": 255,
-> "hfunc": 1,
-> "hkey": "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
}
]
Hide these fields correctly.
The drivers/net/hw/rss_ctx.py selftest catches this when run on
a device with single key, already:
# Check| At /root/./ksft-net-drv/drivers/net/hw/rss_ctx.py, line 381, in test_rss_context_dump:
# Check| ksft_ne(set(data.get('hkey', [1])), {0}, "key is all zero")
# Check failed {0} == {0} key is all zero
not ok 8 rss_ctx.test_rss_context_dump
Fixes: f6122900f4e2 ("ethtool: rss: support dumping RSS contexts")
Reviewed-by: Gal Pressman <gal@xxxxxxxxxx>
Reviewed-by: Joe Damato <jdamato@xxxxxxxxxx>
Link: https://patch.msgid.link/20250201013040.725123-2-kuba@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/ethtool/rss.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ethtool/rss.c b/net/ethtool/rss.c
index e07386275e142..8aa45f3fdfdf0 100644
--- a/net/ethtool/rss.c
+++ b/net/ethtool/rss.c
@@ -107,6 +107,8 @@ rss_prepare_ctx(const struct rss_req_info *request, struct net_device *dev,
u32 total_size, indir_bytes;
u8 *rss_config;
+ data->no_key_fields = !dev->ethtool_ops->rxfh_per_ctx_key;
+
ctx = xa_load(&dev->ethtool->rss_ctx, request->rss_context);
if (!ctx)
return -ENOENT;
@@ -153,7 +155,6 @@ rss_prepare_data(const struct ethnl_req_info *req_base,
if (!ops->cap_rss_ctx_supported && !ops->create_rxfh_context)
return -EOPNOTSUPP;
- data->no_key_fields = !ops->rxfh_per_ctx_key;
return rss_prepare_ctx(request, dev, data, info);
}
--
2.39.5
