From: Vadim Fedorenko <vadim.fedorenko@linux.dev>
To: Tao Cui <cuitao@kylinos.cn>,
andrew@lunn.ch, kuba@kernel.org, davem@davemloft.net,
edumazet@google.com, pabeni@redhat.com
Cc: horms@kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH] net: ethtool: fix missing closing paren in rings_reply_size()
Date: Fri, 8 May 2026 10:30:46 +0100 [thread overview]
Message-ID: <539af15d-3d38-49d9-9023-6b074220149a@linux.dev> (raw)
In-Reply-To: <20260508071402.183909-1-cuitao@kylinos.cn>
On 08/05/2026 08:14, Tao Cui wrote:
> sizeof(u32) on the _RINGS_CQE_SIZE line is missing its closing
> parenthesis, causing nla_total_size() to absorb the subsequent
> _TX_PUSH and _RX_PUSH entries. The resulting size estimate
> happens to be numerically identical due to NLA alignment, but
> the nesting is wrong and misleading.
>
> Signed-off-by: Tao Cui <cuitao@kylinos.cn>
> ---
> net/ethtool/rings.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/net/ethtool/rings.c b/net/ethtool/rings.c
> index 0fd5dcc3729f..9054c89c5d7b 100644
> --- a/net/ethtool/rings.c
> +++ b/net/ethtool/rings.c
> @@ -63,9 +63,9 @@ static int rings_reply_size(const struct ethnl_req_info *req_base,
> nla_total_size(sizeof(u32)) + /* _RINGS_TX */
> nla_total_size(sizeof(u32)) + /* _RINGS_RX_BUF_LEN */
> nla_total_size(sizeof(u8)) + /* _RINGS_TCP_DATA_SPLIT */
> - nla_total_size(sizeof(u32) + /* _RINGS_CQE_SIZE */
> + nla_total_size(sizeof(u32)) + /* _RINGS_CQE_SIZE */
> nla_total_size(sizeof(u8)) + /* _RINGS_TX_PUSH */
> - nla_total_size(sizeof(u8))) + /* _RINGS_RX_PUSH */
> + nla_total_size(sizeof(u8)) + /* _RINGS_RX_PUSH */
> nla_total_size(sizeof(u32)) + /* _RINGS_TX_PUSH_BUF_LEN */
> nla_total_size(sizeof(u32)) + /* _RINGS_TX_PUSH_BUF_LEN_MAX */
> nla_total_size(sizeof(u32)) + /* _RINGS_HDS_THRESH */
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
next prev parent reply other threads:[~2026-05-08 9:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-08 7:14 [PATCH] net: ethtool: fix missing closing paren in rings_reply_size() Tao Cui
2026-05-08 9:30 ` Vadim Fedorenko [this message]
2026-05-08 9:33 ` Breno Leitao
2026-05-08 10:04 ` [PATCH net v2] " Tao Cui
2026-05-08 12:07 ` Andrew Lunn
2026-05-08 20:41 ` [PATCH] " Jakub Kicinski
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