diff mbox series

[net-next,v5,09/12] net: dsa: lantiq_gswip: Consistently use macros for the mac bridge table

Message ID 20240611135434.3180973-10-ms@dev.tdt.de (mailing list archive)
State Accepted
Commit e6c34597f89ac98c06176eed57f125252015a330
Delegated to: Netdev Maintainers
Headers show
Series net: dsa: lantiq_gswip: code improvements | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 850 this patch: 850
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 854 this patch: 854
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 854 this patch: 854
netdev/checkpatch warning WARNING: line length of 90 exceeds 80 columns WARNING: line length of 93 exceeds 80 columns
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-06-13--18-00 (tests: 647)

Commit Message

Martin Schiller June 11, 2024, 1:54 p.m. UTC 
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

Only bits [5:0] in mac_bridge.key[3] are reserved for the FID.
Also, for dynamic (learned) entries, bits [7:4] in mac_bridge.val[0]
represents the port.

Introduce new macros GSWIP_TABLE_MAC_BRIDGE_KEY3_FID and
GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT macro and use it throughout the driver.
Also rename and update GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC to use the
BIT() macro. This makes the driver code easier to understand.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 drivers/net/dsa/lantiq_gswip.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

Comments

Vladimir Oltean June 13, 2024, noon UTC | #1 
On Tue, Jun 11, 2024 at 03:54:31PM +0200, Martin Schiller wrote:
> From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> 
> Only bits [5:0] in mac_bridge.key[3] are reserved for the FID.
> Also, for dynamic (learned) entries, bits [7:4] in mac_bridge.val[0]
> represents the port.
> 
> Introduce new macros GSWIP_TABLE_MAC_BRIDGE_KEY3_FID and
> GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT macro and use it throughout the driver.
> Also rename and update GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC to use the
> BIT() macro. This makes the driver code easier to understand.
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> Signed-off-by: Martin Schiller <ms@dev.tdt.de>
> Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
> ---

Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
diff mbox series

Patch

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 525a62a21601..cd88b00cfdc1 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -236,7 +236,9 @@ 
 #define GSWIP_TABLE_ACTIVE_VLAN		0x01
 #define GSWIP_TABLE_VLAN_MAPPING	0x02
 #define GSWIP_TABLE_MAC_BRIDGE		0x0b
-#define  GSWIP_TABLE_MAC_BRIDGE_STATIC	0x01	/* Static not, aging entry */
+#define  GSWIP_TABLE_MAC_BRIDGE_KEY3_FID	GENMASK(5, 0)	/* Filtering identifier */
+#define  GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT	GENMASK(7, 4)	/* Port on learned entries */
+#define  GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC	BIT(0)		/* Static, non-aging entry */
 
 #define XRX200_GPHY_FW_ALIGN	(16 * 1024)
 
@@ -1304,10 +1306,11 @@  static void gswip_port_fast_age(struct dsa_switch *ds, int port)
 		if (!mac_bridge.valid)
 			continue;
 
-		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC)
+		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC)
 			continue;
 
-		if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) != port)
+		if (port != FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT,
+				      mac_bridge.val[0]))
 			continue;
 
 		mac_bridge.valid = false;
@@ -1382,9 +1385,9 @@  static int gswip_port_fdb(struct dsa_switch *ds, int port,
 	mac_bridge.key[0] = addr[5] | (addr[4] << 8);
 	mac_bridge.key[1] = addr[3] | (addr[2] << 8);
 	mac_bridge.key[2] = addr[1] | (addr[0] << 8);
-	mac_bridge.key[3] = fid;
+	mac_bridge.key[3] = FIELD_PREP(GSWIP_TABLE_MAC_BRIDGE_KEY3_FID, fid);
 	mac_bridge.val[0] = add ? BIT(port) : 0; /* port map */
-	mac_bridge.val[1] = GSWIP_TABLE_MAC_BRIDGE_STATIC;
+	mac_bridge.val[1] = GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC;
 	mac_bridge.valid = add;
 
 	err = gswip_pce_table_entry_write(priv, &mac_bridge);
@@ -1438,14 +1441,15 @@  static int gswip_port_fdb_dump(struct dsa_switch *ds, int port,
 		addr[2] = (mac_bridge.key[1] >> 8) & 0xff;
 		addr[1] = mac_bridge.key[2] & 0xff;
 		addr[0] = (mac_bridge.key[2] >> 8) & 0xff;
-		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC) {
+		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC) {
 			if (mac_bridge.val[0] & BIT(port)) {
 				err = cb(addr, 0, true, data);
 				if (err)
 					return err;
 			}
 		} else {
-			if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) == port) {
+			if (port == FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT,
+					      mac_bridge.val[0])) {
 				err = cb(addr, 0, false, data);
 				if (err)
 					return err;