* [PATCH net-next 0/4] net: macb: few code cleanups
@ 2020-07-01 13:08 Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 1/4] net: macb: do not set again bit 0 of queue_mask Claudiu Beznea
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: Claudiu Beznea @ 2020-07-01 13:08 UTC (permalink / raw)
To: nicolas.ferre, davem, kuba; +Cc: netdev, linux-kernel, Claudiu Beznea
Hi,
Patches in this series cleanup a bit macb code.
Thank you,
Claudiu Beznea
Claudiu Beznea (4):
net: macb: do not set again bit 0 of queue_mask
net: macb: use hweight_long() to count set bits in queue_mask
net: macb: do not initialize queue variable
net: macb: remove is_udp variable
drivers/net/ethernet/cadence/macb_main.c | 19 +++++--------------
1 file changed, 5 insertions(+), 14 deletions(-)
--
2.7.4
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH net-next 1/4] net: macb: do not set again bit 0 of queue_mask
2020-07-01 13:08 [PATCH net-next 0/4] net: macb: few code cleanups Claudiu Beznea
@ 2020-07-01 13:08 ` Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 2/4] net: macb: use hweight_long() to count set bits in queue_mask Claudiu Beznea
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Claudiu Beznea @ 2020-07-01 13:08 UTC (permalink / raw)
To: nicolas.ferre, davem, kuba; +Cc: netdev, linux-kernel, Claudiu Beznea
Bit 0 of queue_mask is set at the beginning of
macb_probe_queues() function. Do not set it again after reading
DGFG6 but instead use "|=" operator.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/net/ethernet/cadence/macb_main.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 52582e8ed90e..1bc2810f3dc4 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -3497,9 +3497,7 @@ static void macb_probe_queues(void __iomem *mem,
return;
/* bit 0 is never set but queue 0 always exists */
- *queue_mask = readl_relaxed(mem + GEM_DCFG6) & 0xff;
-
- *queue_mask |= 0x1;
+ *queue_mask |= readl_relaxed(mem + GEM_DCFG6) & 0xff;
for (hw_q = 1; hw_q < MACB_MAX_QUEUES; ++hw_q)
if (*queue_mask & (1 << hw_q))
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH net-next 2/4] net: macb: use hweight_long() to count set bits in queue_mask
2020-07-01 13:08 [PATCH net-next 0/4] net: macb: few code cleanups Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 1/4] net: macb: do not set again bit 0 of queue_mask Claudiu Beznea
@ 2020-07-01 13:08 ` Claudiu Beznea
2020-07-01 19:22 ` David Miller
2020-07-01 13:08 ` [PATCH net-next 3/4] net: macb: do not initialize queue variable Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 4/4] net: macb: remove is_udp variable Claudiu Beznea
3 siblings, 1 reply; 6+ messages in thread
From: Claudiu Beznea @ 2020-07-01 13:08 UTC (permalink / raw)
To: nicolas.ferre, davem, kuba; +Cc: netdev, linux-kernel, Claudiu Beznea
Use hweight_long() to count set bits in queue_mask.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/net/ethernet/cadence/macb_main.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 1bc2810f3dc4..a84fb0ec53f0 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -3482,8 +3482,6 @@ static void macb_probe_queues(void __iomem *mem,
unsigned int *queue_mask,
unsigned int *num_queues)
{
- unsigned int hw_q;
-
*queue_mask = 0x1;
*num_queues = 1;
@@ -3498,10 +3496,7 @@ static void macb_probe_queues(void __iomem *mem,
/* bit 0 is never set but queue 0 always exists */
*queue_mask |= readl_relaxed(mem + GEM_DCFG6) & 0xff;
-
- for (hw_q = 1; hw_q < MACB_MAX_QUEUES; ++hw_q)
- if (*queue_mask & (1 << hw_q))
- (*num_queues)++;
+ *num_queues = hweight_long(*queue_mask);
}
static int macb_clk_init(struct platform_device *pdev, struct clk **pclk,
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH net-next 3/4] net: macb: do not initialize queue variable
2020-07-01 13:08 [PATCH net-next 0/4] net: macb: few code cleanups Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 1/4] net: macb: do not set again bit 0 of queue_mask Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 2/4] net: macb: use hweight_long() to count set bits in queue_mask Claudiu Beznea
@ 2020-07-01 13:08 ` Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 4/4] net: macb: remove is_udp variable Claudiu Beznea
3 siblings, 0 replies; 6+ messages in thread
From: Claudiu Beznea @ 2020-07-01 13:08 UTC (permalink / raw)
To: nicolas.ferre, davem, kuba; +Cc: netdev, linux-kernel, Claudiu Beznea
Do not initialize queue variable. It is already initialized in for loops.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/net/ethernet/cadence/macb_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index a84fb0ec53f0..3603ab707e0f 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -1467,7 +1467,7 @@ static void macb_hresp_error_task(unsigned long data)
{
struct macb *bp = (struct macb *)data;
struct net_device *dev = bp->dev;
- struct macb_queue *queue = bp->queues;
+ struct macb_queue *queue;
unsigned int q;
u32 ctrl;
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH net-next 4/4] net: macb: remove is_udp variable
2020-07-01 13:08 [PATCH net-next 0/4] net: macb: few code cleanups Claudiu Beznea
` (2 preceding siblings ...)
2020-07-01 13:08 ` [PATCH net-next 3/4] net: macb: do not initialize queue variable Claudiu Beznea
@ 2020-07-01 13:08 ` Claudiu Beznea
3 siblings, 0 replies; 6+ messages in thread
From: Claudiu Beznea @ 2020-07-01 13:08 UTC (permalink / raw)
To: nicolas.ferre, davem, kuba; +Cc: netdev, linux-kernel, Claudiu Beznea
Remove is_udp variable that is used in only one place and use
ip_hdr(skb)->protocol == IPPROTO_UDP check instead.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/net/ethernet/cadence/macb_main.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 3603ab707e0f..4e7317747f54 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -1933,7 +1933,7 @@ static netdev_tx_t macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
unsigned long flags;
unsigned int desc_cnt, nr_frags, frag_size, f;
unsigned int hdrlen;
- bool is_lso, is_udp = 0;
+ bool is_lso;
netdev_tx_t ret = NETDEV_TX_OK;
if (macb_clear_csum(skb)) {
@@ -1949,10 +1949,8 @@ static netdev_tx_t macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
is_lso = (skb_shinfo(skb)->gso_size != 0);
if (is_lso) {
- is_udp = !!(ip_hdr(skb)->protocol == IPPROTO_UDP);
-
/* length of headers */
- if (is_udp)
+ if (ip_hdr(skb)->protocol == IPPROTO_UDP)
/* only queue eth + ip headers separately for UDP */
hdrlen = skb_transport_offset(skb);
else
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH net-next 2/4] net: macb: use hweight_long() to count set bits in queue_mask
2020-07-01 13:08 ` [PATCH net-next 2/4] net: macb: use hweight_long() to count set bits in queue_mask Claudiu Beznea
@ 2020-07-01 19:22 ` David Miller
0 siblings, 0 replies; 6+ messages in thread
From: David Miller @ 2020-07-01 19:22 UTC (permalink / raw)
To: claudiu.beznea; +Cc: nicolas.ferre, kuba, netdev, linux-kernel
From: Claudiu Beznea <claudiu.beznea@microchip.com>
Date: Wed, 1 Jul 2020 16:08:49 +0300
> @@ -3482,8 +3482,6 @@ static void macb_probe_queues(void __iomem *mem,
> unsigned int *queue_mask,
...
> + *num_queues = hweight_long(*queue_mask);
queue_mask is not a long, it is an unsinged int, therefore hweight32() is
probably more appropriate.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-07-01 19:22 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2020-07-01 13:08 [PATCH net-next 0/4] net: macb: few code cleanups Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 1/4] net: macb: do not set again bit 0 of queue_mask Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 2/4] net: macb: use hweight_long() to count set bits in queue_mask Claudiu Beznea
2020-07-01 19:22 ` David Miller
2020-07-01 13:08 ` [PATCH net-next 3/4] net: macb: do not initialize queue variable Claudiu Beznea
2020-07-01 13:08 ` [PATCH net-next 4/4] net: macb: remove is_udp variable Claudiu Beznea
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