From: Parav Pandit <parav@mellanox.com>
Date: Tue, 14 Nov 2017 12:52:05 +0000 (+0200)
Subject: IB/core: Refactor to avoid unnecessary check on GID lookup miss
X-Git-Tag: for-linus-20180210~45^2~204
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=151ed9d7009769207cd71065f64f58e7d73add65;p=linux-block.git

IB/core: Refactor to avoid unnecessary check on GID lookup miss

Currently on every gid entry comparison miss found variable is checked;
which is not needed as those two comparison fail already indicate that
GID is not found yet.
So refactor to avoid such check and copy the GID index when found.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---

diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index 77515638c55c..43300b8e6341 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -573,27 +573,24 @@ static int ib_cache_gid_find_by_filter(struct ib_device *ib_dev,
 		struct ib_gid_attr attr;
 
 		if (table->data_vec[i].props & GID_TABLE_ENTRY_INVALID)
-			goto next;
+			continue;
 
 		if (memcmp(gid, &table->data_vec[i].gid, sizeof(*gid)))
-			goto next;
+			continue;
 
 		memcpy(&attr, &table->data_vec[i].attr, sizeof(attr));
 
-		if (filter(gid, &attr, context))
+		if (filter(gid, &attr, context)) {
 			found = true;
-
-next:
-		if (found)
+			if (index)
+				*index = i;
 			break;
+		}
 	}
 	read_unlock_irqrestore(&table->rwlock, flags);
 
 	if (!found)
 		return -ENOENT;
-
-	if (index)
-		*index = i;
 	return 0;
 }