linux-kernel - [PATCH v2 1/1] netlabel: cleanup struct netlbl_lsm

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Message-Id: <20240204023531.2225264-1-dongtai.guo@linux.dev>
Date: Sun,  4 Feb 2024 10:35:31 +0800
From: George Guo <dongtai.guo@...ux.dev>
To: Jakub Kicinski <kuba@...nel.org>,
	Paul Moore <paul@...l-moore.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Paolo Abeni <pabeni@...hat.com>
Cc: George Guo <guodongtai@...inos.cn>,
	netdev@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/1] netlabel: cleanup struct netlbl_lsm_catmap

From: George Guo <guodongtai@...inos.cn>

Simplify the code from macro NETLBL_CATMAP_MAPTYPE to u64, and fix
warning "Macros with complex values should be enclosed in parentheses"
on "#define NETLBL_CATMAP_BIT (NETLBL_CATMAP_MAPTYPE)0x01", which is
modified to "#define NETLBL_CATMAP_BIT ((u64)0x01)".

Signed-off-by: George Guo <guodongtai@...inos.cn>
---
V2:
Yes, I understand what you are saying.
Actually, there is a compile warnings on "#define NETLBL_CATMAP_BIT (NETLBL_CATMAP_MAPTYPE)0x01"
which is missing parentheses.
---
 include/net/netlabel.h       | 7 +++----
 net/netlabel/netlabel_kapi.c | 8 ++++----
 2 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/include/net/netlabel.h b/include/net/netlabel.h
index d74f21f528de..0d04a8ae3811 100644
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -145,15 +145,14 @@ struct netlbl_lsm_cache {
  * processing.
  *
  */
-#define NETLBL_CATMAP_MAPTYPE           u64
 #define NETLBL_CATMAP_MAPCNT            4
-#define NETLBL_CATMAP_MAPSIZE           (sizeof(NETLBL_CATMAP_MAPTYPE) * 8)
+#define NETLBL_CATMAP_MAPSIZE           (sizeof(u64) * 8)
 #define NETLBL_CATMAP_SIZE              (NETLBL_CATMAP_MAPSIZE * \
 					 NETLBL_CATMAP_MAPCNT)
-#define NETLBL_CATMAP_BIT               (NETLBL_CATMAP_MAPTYPE)0x01
+#define NETLBL_CATMAP_BIT               ((u64)0x01)
 struct netlbl_lsm_catmap {
 	u32 startbit;
-	NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT];
+	u64 bitmap[NETLBL_CATMAP_MAPCNT];
 	struct netlbl_lsm_catmap *next;
 };
 
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c
index 27511c90a26f..7b844581ebee 100644
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -610,7 +610,7 @@ int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset)
 	struct netlbl_lsm_catmap *iter;
 	u32 idx;
 	u32 bit;
-	NETLBL_CATMAP_MAPTYPE bitmap;
+	u64 bitmap;
 
 	iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0);
 	if (iter == NULL)
@@ -666,8 +666,8 @@ int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset)
 	struct netlbl_lsm_catmap *prev = NULL;
 	u32 idx;
 	u32 bit;
-	NETLBL_CATMAP_MAPTYPE bitmask;
-	NETLBL_CATMAP_MAPTYPE bitmap;
+	u64 bitmask;
+	u64 bitmap;
 
 	iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0);
 	if (iter == NULL)
@@ -857,7 +857,7 @@ int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
 
 	offset -= iter->startbit;
 	idx = offset / NETLBL_CATMAP_MAPSIZE;
-	iter->bitmap[idx] |= (NETLBL_CATMAP_MAPTYPE)bitmap
+	iter->bitmap[idx] |= (u64)bitmap
 			     << (offset % NETLBL_CATMAP_MAPSIZE);
 
 	return 0;
-- 
2.34.1