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[v2,-next] neigh: Adjustment calculation method of neighbour path symbols

Message ID 20201026022126.117741-1-zhangqilong3@huawei.com
State Rejected
Delegated to: David Miller
Headers show
Series [v2,-next] neigh: Adjustment calculation method of neighbour path symbols | expand

Checks

Context Check Description
jkicinski/cover_letter success Link
jkicinski/fixes_present success Link
jkicinski/patch_count success Link
jkicinski/tree_selection success Guessed tree name to be net-next
jkicinski/subject_prefix warning Target tree name not specified in the subject
jkicinski/source_inline success Was 0 now: 0
jkicinski/verify_signedoff success Link
jkicinski/module_param success Was 0 now: 0
jkicinski/build_32bit fail Errors and warnings before: 7 this patch: 7
jkicinski/kdoc success Errors and warnings before: 0 this patch: 0
jkicinski/verify_fixes success Link
jkicinski/checkpatch fail Link
jkicinski/build_allmodconfig_warn success Errors and warnings before: 3 this patch: 3
jkicinski/header_inline success Link
jkicinski/stable success Stable not CCed

Commit Message

Zhang Qilong Oct. 26, 2020, 2:21 a.m. UTC
Using size of "net//neigh/" is not clear, the use
of stitching("net/" + /neigh") should be clearer.

Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
---
 net/core/neighbour.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

Comments

Jakub Kicinski Oct. 26, 2020, 8:24 p.m. UTC | #1
On Mon, 26 Oct 2020 10:21:26 +0800 Zhang Qilong wrote:
> Using size of "net//neigh/" is not clear, the use
> of stitching("net/" + /neigh") should be clearer.
> 
> Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
> ---
>  net/core/neighbour.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/net/core/neighbour.c b/net/core/neighbour.c
> index 8e39e28b0a8d..0474e73c4f9f 100644
> --- a/net/core/neighbour.c
> +++ b/net/core/neighbour.c
> @@ -3623,7 +3623,14 @@ int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
>  	int i;
>  	struct neigh_sysctl_table *t;
>  	const char *dev_name_source;
> -	char neigh_path[ sizeof("net//neigh/") + IFNAMSIZ + IFNAMSIZ ];
> +
> +	/*
> +	 * The path pattern is as follows
> +	 * "net/%s/neigh/%s", minusing one
> +	 * is for unnecessary terminators.
> +	 */
> +	char neigh_path[sizeof("net/") - 1 + IFNAMSIZ +
> +			sizeof("/neigh/") + IFNAMSIZ];

Let's leave this. The code is fine, the re-factoring is not worth the 
back an forth.

>  	char *p_name;
>  
>  	t = kmemdup(&neigh_sysctl_template, sizeof(*t), GFP_KERNEL);
diff mbox series

Patch

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 8e39e28b0a8d..0474e73c4f9f 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -3623,7 +3623,14 @@  int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
 	int i;
 	struct neigh_sysctl_table *t;
 	const char *dev_name_source;
-	char neigh_path[ sizeof("net//neigh/") + IFNAMSIZ + IFNAMSIZ ];
+
+	/*
+	 * The path pattern is as follows
+	 * "net/%s/neigh/%s", minusing one
+	 * is for unnecessary terminators.
+	 */
+	char neigh_path[sizeof("net/") - 1 + IFNAMSIZ +
+			sizeof("/neigh/") + IFNAMSIZ];
 	char *p_name;
 
 	t = kmemdup(&neigh_sysctl_template, sizeof(*t), GFP_KERNEL);