diff mbox series

bpf, devmap: Remove unnecessary if check in for loop

Message ID 20240529101900.103913-2-thorsten.blum@toblux.com (mailing list archive)
State Accepted
Commit 2317dc2c22cc353b699c7d1db47b2fe91f54055c
Delegated to: BPF
Headers show
Series bpf, devmap: Remove unnecessary if check in for loop | expand

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Commit Message

Thorsten Blum May 29, 2024, 10:19 a.m. UTC 
The iterator variable dst cannot be NULL and the if check can be
removed.

Remove it and fix the following Coccinelle/coccicheck warning reported
by itnull.cocci:

	ERROR: iterator variable bound on line 762 cannot be NULL

Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
---
 kernel/bpf/devmap.c | 3 ---
 1 file changed, 3 deletions(-)

Comments

Jiri Olsa May 29, 2024, 11:39 a.m. UTC | #1 
On Wed, May 29, 2024 at 12:19:01PM +0200, Thorsten Blum wrote:
> The iterator variable dst cannot be NULL and the if check can be
> removed.
> 
> Remove it and fix the following Coccinelle/coccicheck warning reported
> by itnull.cocci:
> 
> 	ERROR: iterator variable bound on line 762 cannot be NULL
> 
> Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>

Acked-by: Jiri Olsa <jolsa@kernel.org>

jirka

> ---
>  kernel/bpf/devmap.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
> index 4e2cdbb5629f..7f3b34452243 100644
> --- a/kernel/bpf/devmap.c
> +++ b/kernel/bpf/devmap.c
> @@ -760,9 +760,6 @@ int dev_map_redirect_multi(struct net_device *dev, struct sk_buff *skb,
>  		for (i = 0; i < dtab->n_buckets; i++) {
>  			head = dev_map_index_hash(dtab, i);
>  			hlist_for_each_entry_safe(dst, next, head, index_hlist) {
> -				if (!dst)
> -					continue;
> -
>  				if (is_ifindex_excluded(excluded_devices, num_excluded,
>  							dst->dev->ifindex))
>  					continue;
> -- 
> 2.45.1
>
Toke Høiland-Jørgensen May 29, 2024, 2:24 p.m. UTC | #2 
Thorsten Blum <thorsten.blum@toblux.com> writes:

> The iterator variable dst cannot be NULL and the if check can be
> removed.
>
> Remove it and fix the following Coccinelle/coccicheck warning reported
> by itnull.cocci:
>
> 	ERROR: iterator variable bound on line 762 cannot be NULL
>
> Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>

Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
patchwork-bot+netdevbpf@kernel.org June 3, 2024, 3:10 p.m. UTC | #3 
Hello:

This patch was applied to bpf/bpf.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Wed, 29 May 2024 12:19:01 +0200 you wrote:
> The iterator variable dst cannot be NULL and the if check can be
> removed.
> 
> Remove it and fix the following Coccinelle/coccicheck warning reported
> by itnull.cocci:
> 
> 	ERROR: iterator variable bound on line 762 cannot be NULL
> 
> [...]

Here is the summary with links:
  - bpf, devmap: Remove unnecessary if check in for loop
    https://git.kernel.org/bpf/bpf/c/2317dc2c22cc

You are awesome, thank you!
diff mbox series

Patch

diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 4e2cdbb5629f..7f3b34452243 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -760,9 +760,6 @@  int dev_map_redirect_multi(struct net_device *dev, struct sk_buff *skb,
 		for (i = 0; i < dtab->n_buckets; i++) {
 			head = dev_map_index_hash(dtab, i);
 			hlist_for_each_entry_safe(dst, next, head, index_hlist) {
-				if (!dst)
-					continue;
-
 				if (is_ifindex_excluded(excluded_devices, num_excluded,
 							dst->dev->ifindex))
 					continue;