[PATCH net] devlink: Remove redundant free on error path

[PATCH net] devlink: Remove redundant free on error path

[Arkadi Sharshevsky]

The current code performs unneeded free. Remove the redundant skb freeing
during the error path.

Fixes: 1555d204e743 ("devlink: Support for pipeline debug (dpipe)")
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
---
 net/core/devlink.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index f23e5ed..7917838 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1798,7 +1798,7 @@ static int devlink_dpipe_tables_fill(struct genl_info *info,
 	if (!nlh) {
 		err = devlink_dpipe_send_and_alloc_skb(&skb, info);
 		if (err)
-			goto err_skb_send_alloc;
+			return err;
 		goto send_done;
 	}
 
@@ -1807,7 +1807,6 @@ static int devlink_dpipe_tables_fill(struct genl_info *info,
 nla_put_failure:
 	err = -EMSGSIZE;
 err_table_put:
-err_skb_send_alloc:
 	genlmsg_cancel(skb, hdr);
 	nlmsg_free(skb);
 	return err;
@@ -2073,7 +2072,7 @@ static int devlink_dpipe_entries_fill(struct genl_info *info,
 					     table->counters_enabled,
 					     &dump_ctx);
 	if (err)
-		goto err_entries_dump;
+		return err;
 
 send_done:
 	nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
@@ -2081,16 +2080,10 @@ static int devlink_dpipe_entries_fill(struct genl_info *info,
 	if (!nlh) {
 		err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
 		if (err)
-			goto err_skb_send_alloc;
+			return err;
 		goto send_done;
 	}
 	return genlmsg_reply(dump_ctx.skb, info);
-
-err_entries_dump:
-err_skb_send_alloc:
-	genlmsg_cancel(dump_ctx.skb, dump_ctx.hdr);
-	nlmsg_free(dump_ctx.skb);
-	return err;
 }
 
 static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
@@ -2229,7 +2222,7 @@ static int devlink_dpipe_headers_fill(struct genl_info *info,
 	if (!nlh) {
 		err = devlink_dpipe_send_and_alloc_skb(&skb, info);
 		if (err)
-			goto err_skb_send_alloc;
+			return err;
 		goto send_done;
 	}
 	return genlmsg_reply(skb, info);
@@ -2237,7 +2230,6 @@ static int devlink_dpipe_headers_fill(struct genl_info *info,
 nla_put_failure:
 	err = -EMSGSIZE;
 err_table_put:
-err_skb_send_alloc:
 	genlmsg_cancel(skb, hdr);
 	nlmsg_free(skb);
 	return err;
-- 
2.4.11

Re: [PATCH net] devlink: Remove redundant free on error path

[Jiri Pirko]

Sun, Mar 18, 2018 at 04:37:22PM CET, arkadis@mellanox.com wrote:
>The current code performs unneeded free. Remove the redundant skb freeing
>during the error path.
>
>Fixes: 1555d204e743 ("devlink: Support for pipeline debug (dpipe)")
>Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>

Acked-by: Jiri Pirko <jiri@mellanox.com>

Re: [PATCH net] devlink: Remove redundant free on error path

[David Miller]

From: Arkadi Sharshevsky <arkadis@mellanox.com>
Date: Sun, 18 Mar 2018 17:37:22 +0200

> The current code performs unneeded free. Remove the redundant skb freeing
> during the error path.
> 
> Fixes: 1555d204e743 ("devlink: Support for pipeline debug (dpipe)")
> Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>

Applied and queued up for -stable, thank you.