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[net-next,v2,3/4] net: dsa: hellcreek: Move common code to helper

Message ID 20210313093939.15179-4-kurt@kmk-computers.de (mailing list archive)
State Accepted
Commit eb5f3d3141805fd22b2fb49a23536cc3f30dd752
Delegated to: Netdev Maintainers
Headers show
Series net: dsa: hellcreek: Add support for dumping tables | expand

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Commit Message

Kurt Kanzenbach March 13, 2021, 9:39 a.m. UTC 
There are two functions which need to populate fdb entries. Move that to a
helper function.

Signed-off-by: Kurt Kanzenbach <kurt@kmk-computers.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/dsa/hirschmann/hellcreek.c | 85 +++++++++++++-------------
 1 file changed, 43 insertions(+), 42 deletions(-)

Comments

Vladimir Oltean March 13, 2021, 11:44 a.m. UTC | #1 
On Sat, Mar 13, 2021 at 10:39:38AM +0100, Kurt Kanzenbach wrote:
> There are two functions which need to populate fdb entries. Move that to a
> helper function.
> 
> Signed-off-by: Kurt Kanzenbach <kurt@kmk-computers.de>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>
> ---
>  drivers/net/dsa/hirschmann/hellcreek.c | 85 +++++++++++++-------------
>  1 file changed, 43 insertions(+), 42 deletions(-)
> 
> diff --git a/drivers/net/dsa/hirschmann/hellcreek.c b/drivers/net/dsa/hirschmann/hellcreek.c
> index edac39462a07..38ff0f12e8a4 100644
> --- a/drivers/net/dsa/hirschmann/hellcreek.c
> +++ b/drivers/net/dsa/hirschmann/hellcreek.c
> @@ -670,6 +670,40 @@ static int __hellcreek_fdb_del(struct hellcreek *hellcreek,
>  	return hellcreek_wait_fdb_ready(hellcreek);
>  }
>  
> +static void hellcreek_populate_fdb_entry(struct hellcreek *hellcreek,
> +					 struct hellcreek_fdb_entry *entry,
> +					 size_t idx)
> +{
> +	unsigned char addr[ETH_ALEN];

You could have assigned:

	unsigned char *addr = entry->mac;

and avoided the memcpy, but it doesn't really matter much.

> +	u16 meta, mac;
> +
> +	/* Read values */
> +	meta	= hellcreek_read(hellcreek, HR_FDBMDRD);
> +	mac	= hellcreek_read(hellcreek, HR_FDBRDL);
> +	addr[5] = mac & 0xff;
> +	addr[4] = (mac & 0xff00) >> 8;
> +	mac	= hellcreek_read(hellcreek, HR_FDBRDM);
> +	addr[3] = mac & 0xff;
> +	addr[2] = (mac & 0xff00) >> 8;
> +	mac	= hellcreek_read(hellcreek, HR_FDBRDH);
> +	addr[1] = mac & 0xff;
> +	addr[0] = (mac & 0xff00) >> 8;
> +
> +	/* Populate @entry */
> +	memcpy(entry->mac, addr, sizeof(addr));
> +	entry->idx	    = idx;
> +	entry->portmask	    = (meta & HR_FDBMDRD_PORTMASK_MASK) >>
> +		HR_FDBMDRD_PORTMASK_SHIFT;
> +	entry->age	    = (meta & HR_FDBMDRD_AGE_MASK) >>
> +		HR_FDBMDRD_AGE_SHIFT;
> +	entry->is_obt	    = !!(meta & HR_FDBMDRD_OBT);
> +	entry->pass_blocked = !!(meta & HR_FDBMDRD_PASS_BLOCKED);
> +	entry->is_static    = !!(meta & HR_FDBMDRD_STATIC);
> +	entry->reprio_tc    = (meta & HR_FDBMDRD_REPRIO_TC_MASK) >>
> +		HR_FDBMDRD_REPRIO_TC_SHIFT;
> +	entry->reprio_en    = !!(meta & HR_FDBMDRD_REPRIO_EN);
> +}
> +

Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Florian Fainelli March 14, 2021, 1:41 a.m. UTC | #2 
On 3/13/2021 1:39 AM, Kurt Kanzenbach wrote:
> There are two functions which need to populate fdb entries. Move that to a
> helper function.
> 
> Signed-off-by: Kurt Kanzenbach <kurt@kmk-computers.de>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
diff mbox series

Patch

diff --git a/drivers/net/dsa/hirschmann/hellcreek.c b/drivers/net/dsa/hirschmann/hellcreek.c
index edac39462a07..38ff0f12e8a4 100644
--- a/drivers/net/dsa/hirschmann/hellcreek.c
+++ b/drivers/net/dsa/hirschmann/hellcreek.c
@@ -670,6 +670,40 @@  static int __hellcreek_fdb_del(struct hellcreek *hellcreek,
 	return hellcreek_wait_fdb_ready(hellcreek);
 }
 
+static void hellcreek_populate_fdb_entry(struct hellcreek *hellcreek,
+					 struct hellcreek_fdb_entry *entry,
+					 size_t idx)
+{
+	unsigned char addr[ETH_ALEN];
+	u16 meta, mac;
+
+	/* Read values */
+	meta	= hellcreek_read(hellcreek, HR_FDBMDRD);
+	mac	= hellcreek_read(hellcreek, HR_FDBRDL);
+	addr[5] = mac & 0xff;
+	addr[4] = (mac & 0xff00) >> 8;
+	mac	= hellcreek_read(hellcreek, HR_FDBRDM);
+	addr[3] = mac & 0xff;
+	addr[2] = (mac & 0xff00) >> 8;
+	mac	= hellcreek_read(hellcreek, HR_FDBRDH);
+	addr[1] = mac & 0xff;
+	addr[0] = (mac & 0xff00) >> 8;
+
+	/* Populate @entry */
+	memcpy(entry->mac, addr, sizeof(addr));
+	entry->idx	    = idx;
+	entry->portmask	    = (meta & HR_FDBMDRD_PORTMASK_MASK) >>
+		HR_FDBMDRD_PORTMASK_SHIFT;
+	entry->age	    = (meta & HR_FDBMDRD_AGE_MASK) >>
+		HR_FDBMDRD_AGE_SHIFT;
+	entry->is_obt	    = !!(meta & HR_FDBMDRD_OBT);
+	entry->pass_blocked = !!(meta & HR_FDBMDRD_PASS_BLOCKED);
+	entry->is_static    = !!(meta & HR_FDBMDRD_STATIC);
+	entry->reprio_tc    = (meta & HR_FDBMDRD_REPRIO_TC_MASK) >>
+		HR_FDBMDRD_REPRIO_TC_SHIFT;
+	entry->reprio_en    = !!(meta & HR_FDBMDRD_REPRIO_EN);
+}
+
 /* Retrieve the index of a FDB entry by mac address. Currently we search through
  * the complete table in hardware. If that's too slow, we might have to cache
  * the complete FDB table in software.
@@ -691,39 +725,19 @@  static int hellcreek_fdb_get(struct hellcreek *hellcreek,
 	 * enter new entries anywhere.
 	 */
 	for (i = 0; i < hellcreek->fdb_entries; ++i) {
-		unsigned char addr[ETH_ALEN];
-		u16 meta, mac;
-
-		meta	= hellcreek_read(hellcreek, HR_FDBMDRD);
-		mac	= hellcreek_read(hellcreek, HR_FDBRDL);
-		addr[5] = mac & 0xff;
-		addr[4] = (mac & 0xff00) >> 8;
-		mac	= hellcreek_read(hellcreek, HR_FDBRDM);
-		addr[3] = mac & 0xff;
-		addr[2] = (mac & 0xff00) >> 8;
-		mac	= hellcreek_read(hellcreek, HR_FDBRDH);
-		addr[1] = mac & 0xff;
-		addr[0] = (mac & 0xff00) >> 8;
+		struct hellcreek_fdb_entry tmp = { 0 };
+
+		/* Read entry */
+		hellcreek_populate_fdb_entry(hellcreek, &tmp, i);
 
 		/* Force next entry */
 		hellcreek_write(hellcreek, 0x00, HR_FDBRDH);
 
-		if (memcmp(addr, dest, ETH_ALEN))
+		if (memcmp(tmp.mac, dest, ETH_ALEN))
 			continue;
 
 		/* Match found */
-		entry->idx	    = i;
-		entry->portmask	    = (meta & HR_FDBMDRD_PORTMASK_MASK) >>
-			HR_FDBMDRD_PORTMASK_SHIFT;
-		entry->age	    = (meta & HR_FDBMDRD_AGE_MASK) >>
-			HR_FDBMDRD_AGE_SHIFT;
-		entry->is_obt	    = !!(meta & HR_FDBMDRD_OBT);
-		entry->pass_blocked = !!(meta & HR_FDBMDRD_PASS_BLOCKED);
-		entry->is_static    = !!(meta & HR_FDBMDRD_STATIC);
-		entry->reprio_tc    = (meta & HR_FDBMDRD_REPRIO_TC_MASK) >>
-			HR_FDBMDRD_REPRIO_TC_SHIFT;
-		entry->reprio_en    = !!(meta & HR_FDBMDRD_REPRIO_EN);
-		memcpy(entry->mac, addr, sizeof(addr));
+		memcpy(entry, &tmp, sizeof(*entry));
 
 		return 0;
 	}
@@ -838,18 +852,9 @@  static int hellcreek_fdb_dump(struct dsa_switch *ds, int port,
 	for (i = 0; i < hellcreek->fdb_entries; ++i) {
 		unsigned char null_addr[ETH_ALEN] = { 0 };
 		struct hellcreek_fdb_entry entry = { 0 };
-		u16 meta, mac;
-
-		meta	= hellcreek_read(hellcreek, HR_FDBMDRD);
-		mac	= hellcreek_read(hellcreek, HR_FDBRDL);
-		entry.mac[5] = mac & 0xff;
-		entry.mac[4] = (mac & 0xff00) >> 8;
-		mac	= hellcreek_read(hellcreek, HR_FDBRDM);
-		entry.mac[3] = mac & 0xff;
-		entry.mac[2] = (mac & 0xff00) >> 8;
-		mac	= hellcreek_read(hellcreek, HR_FDBRDH);
-		entry.mac[1] = mac & 0xff;
-		entry.mac[0] = (mac & 0xff00) >> 8;
+
+		/* Read entry */
+		hellcreek_populate_fdb_entry(hellcreek, &entry, i);
 
 		/* Force next entry */
 		hellcreek_write(hellcreek, 0x00, HR_FDBRDH);
@@ -858,10 +863,6 @@  static int hellcreek_fdb_dump(struct dsa_switch *ds, int port,
 		if (!memcmp(entry.mac, null_addr, ETH_ALEN))
 			continue;
 
-		entry.portmask	= (meta & HR_FDBMDRD_PORTMASK_MASK) >>
-			HR_FDBMDRD_PORTMASK_SHIFT;
-		entry.is_static	= !!(meta & HR_FDBMDRD_STATIC);
-
 		/* Check port mask */
 		if (!(entry.portmask & BIT(port)))
 			continue;