2018-07-27 22:58:32

by Ivan Khoronzhuk

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Subject: [PATCH v3 net-next] net: ethernet: ti: cpsw: replace unnecessarily macroses on functions

Replace ugly macroses on functions.

Reviewed-by: Grygorii Strashko <[email protected]>
Signed-off-by: Ivan Khoronzhuk <[email protected]>
---

Based on net-next/master

v2..v1:
- removed inline for cpsw_src_port_detect()

drivers/net/ethernet/ti/cpsw.c | 63 +++++++++++++++++-----------------
1 file changed, 32 insertions(+), 31 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 1b54c26c2bec..9cacfe4ad065 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -565,40 +565,40 @@ static const struct cpsw_stats cpsw_gstrings_ch_stats[] = {
(func)(slave++, ##arg); \
} while (0)

-#define cpsw_dual_emac_src_port_detect(cpsw, status, ndev, skb) \
- do { \
- if (!cpsw->data.dual_emac) \
- break; \
- if (CPDMA_RX_SOURCE_PORT(status) == 1) { \
- ndev = cpsw->slaves[0].ndev; \
- skb->dev = ndev; \
- } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \
- ndev = cpsw->slaves[1].ndev; \
- skb->dev = ndev; \
- } \
- } while (0)
-#define cpsw_add_mcast(cpsw, priv, addr) \
- do { \
- if (cpsw->data.dual_emac) { \
- struct cpsw_slave *slave = cpsw->slaves + \
- priv->emac_port; \
- int slave_port = cpsw_get_slave_port( \
- slave->slave_num); \
- cpsw_ale_add_mcast(cpsw->ale, addr, \
- 1 << slave_port | ALE_PORT_HOST, \
- ALE_VLAN, slave->port_vlan, 0); \
- } else { \
- cpsw_ale_add_mcast(cpsw->ale, addr, \
- ALE_ALL_PORTS, \
- 0, 0, 0); \
- } \
- } while (0)
-
static inline int cpsw_get_slave_port(u32 slave_num)
{
return slave_num + 1;
}

+static void cpsw_src_port_detect(struct cpsw_common *cpsw, int status,
+ struct sk_buff *skb)
+{
+ if (!cpsw->data.dual_emac)
+ return;
+
+ if (CPDMA_RX_SOURCE_PORT(status) == 1)
+ skb->dev = cpsw->slaves[0].ndev;
+ else if (CPDMA_RX_SOURCE_PORT(status) == 2)
+ skb->dev = cpsw->slaves[1].ndev;
+}
+
+static void cpsw_add_mcast(struct cpsw_priv *priv, u8 *addr)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+
+ if (cpsw->data.dual_emac) {
+ struct cpsw_slave *slave = cpsw->slaves + priv->emac_port;
+ int slave_port = cpsw_get_slave_port(slave->slave_num);
+
+ cpsw_ale_add_mcast(cpsw->ale, addr,
+ 1 << slave_port | ALE_PORT_HOST,
+ ALE_VLAN, slave->port_vlan, 0);
+ return;
+ }
+
+ cpsw_ale_add_mcast(cpsw->ale, addr, ALE_ALL_PORTS, 0, 0, 0);
+}
+
static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
{
struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
@@ -706,7 +706,7 @@ static void cpsw_ndo_set_rx_mode(struct net_device *ndev)

/* program multicast address list into ALE register */
netdev_for_each_mc_addr(ha, ndev) {
- cpsw_add_mcast(cpsw, priv, (u8 *)ha->addr);
+ cpsw_add_mcast(priv, (u8 *)ha->addr);
}
}
}
@@ -801,7 +801,8 @@ static void cpsw_rx_handler(void *token, int len, int status)
int ret = 0;
struct cpsw_common *cpsw = ndev_to_cpsw(ndev);

- cpsw_dual_emac_src_port_detect(cpsw, status, ndev, skb);
+ cpsw_src_port_detect(cpsw, status, skb);
+ ndev = skb->dev;

if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
/* In dual emac mode check for all interfaces */
--
2.17.1



2018-07-27 23:32:49

by Joe Perches

[permalink] [raw]
Subject: Re: [PATCH v3 net-next] net: ethernet: ti: cpsw: replace unnecessarily macroses on functions

On Sat, 2018-07-28 at 01:57 +0300, Ivan Khoronzhuk wrote:
> Replace ugly macroses on functions.

trivia:

As cpsw_src_port_detect is only used once, and is a
very small function, it might make the code more
intelligible to just directly code it where it's used.

> diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
[]
> @@ -565,40 +565,40 @@ static const struct cpsw_stats cpsw_gstrings_ch_stats[] = {
[]
> +static void cpsw_src_port_detect(struct cpsw_common *cpsw, int status,
> + struct sk_buff *skb)
> +{
> + if (!cpsw->data.dual_emac)
> + return;
> +
> + if (CPDMA_RX_SOURCE_PORT(status) == 1)
> + skb->dev = cpsw->slaves[0].ndev;
> + else if (CPDMA_RX_SOURCE_PORT(status) == 2)
> + skb->dev = cpsw->slaves[1].ndev;
> +}
[]
> @@ -801,7 +801,8 @@ static void cpsw_rx_handler(void *token, int len, int status)
> int ret = 0;
> struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
>
> - cpsw_dual_emac_src_port_detect(cpsw, status, ndev, skb);
> + cpsw_src_port_detect(cpsw, status, skb);

here

> + ndev = skb->dev;

2018-07-28 14:42:32

by Ivan Khoronzhuk

[permalink] [raw]
Subject: Re: [PATCH v3 net-next] net: ethernet: ti: cpsw: replace unnecessarily macroses on functions

On Fri, Jul 27, 2018 at 04:30:54PM -0700, Joe Perches wrote:
>On Sat, 2018-07-28 at 01:57 +0300, Ivan Khoronzhuk wrote:
>> Replace ugly macroses on functions.
>
>trivia:
>
>As cpsw_src_port_detect is only used once, and is a
>very small function, it might make the code more
>intelligible to just directly code it where it's used.
>
>> diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
>[]
>> @@ -565,40 +565,40 @@ static const struct cpsw_stats cpsw_gstrings_ch_stats[] = {
>[]
>> +static void cpsw_src_port_detect(struct cpsw_common *cpsw, int status,
>> + struct sk_buff *skb)
>> +{
>> + if (!cpsw->data.dual_emac)
>> + return;
>> +
>> + if (CPDMA_RX_SOURCE_PORT(status) == 1)
>> + skb->dev = cpsw->slaves[0].ndev;
>> + else if (CPDMA_RX_SOURCE_PORT(status) == 2)
>> + skb->dev = cpsw->slaves[1].ndev;
>> +}
>[]
>> @@ -801,7 +801,8 @@ static void cpsw_rx_handler(void *token, int len, int status)
>> int ret = 0;
>> struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
>>
>> - cpsw_dual_emac_src_port_detect(cpsw, status, ndev, skb);
>> + cpsw_src_port_detect(cpsw, status, skb);
>
>here
Can put here, instead of function, the following:
if (cpsw->data.dual_emac) {
port = CPDMA_RX_SOURCE_PORT(status);
if (port) {
ndev = cpsw->slaves[--port].ndev;
skb->dev = ndev;
}
}

if no objection ofc.

>
>> + ndev = skb->dev;

--
Regards,
Ivan Khoronzhuk