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net: usb: Merge cpu_to_le32s + memcpy to put_unaligned_le32

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Merge the combo uses of cpu_to_le32s and memcpy.
Use put_unaligned_le32 instead.
This simplifies the code.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Chuhong Yuan 2019-07-22 15:41:34 +08:00 committed by David S. Miller
parent fcd4e60885
commit 7e24b4ed5a
5 changed files with 20 additions and 31 deletions
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9
drivers/net/usb/asix_common.c
View File

@ -221,6 +221,7 @@ struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
int tailroom = skb_tailroom(skb);
u32 packet_len;
u32 padbytes = 0xffff0000;
void *ptr;
padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
@ -256,13 +257,11 @@ struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
}
packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
skb_push(skb, 4);
cpu_to_le32s(&packet_len);
skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
ptr = skb_push(skb, 4);
put_unaligned_le32(packet_len, ptr);
if (padlen) {
cpu_to_le32s(&padbytes);
memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
put_unaligned_le32(padbytes, skb_tail_pointer(skb));
skb_put(skb, sizeof(padbytes));
}

11
drivers/net/usb/ax88179_178a.c
View File

@ -1421,6 +1421,7 @@ ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
int frame_size = dev->maxpacket;
int mss = skb_shinfo(skb)->gso_size;
int headroom;
void *ptr;
tx_hdr1 = skb->len;
tx_hdr2 = mss;
@ -1435,13 +1436,9 @@ ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
return NULL;
}
skb_push(skb, 4);
cpu_to_le32s(&tx_hdr2);
skb_copy_to_linear_data(skb, &tx_hdr2, 4);
skb_push(skb, 4);
cpu_to_le32s(&tx_hdr1);
skb_copy_to_linear_data(skb, &tx_hdr1, 4);
ptr = skb_push(skb, 8);
put_unaligned_le32(tx_hdr1, ptr);
put_unaligned_le32(tx_hdr2, ptr + 4);
return skb;
}

11
drivers/net/usb/lan78xx.c
View File

@ -2729,6 +2729,7 @@ static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
struct sk_buff *skb, gfp_t flags)
{
u32 tx_cmd_a, tx_cmd_b;
void *ptr;
if (skb_cow_head(skb, TX_OVERHEAD)) {
dev_kfree_skb_any(skb);
@ -2757,13 +2758,9 @@ static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_;
}
skb_push(skb, 4);
cpu_to_le32s(&tx_cmd_b);
memcpy(skb->data, &tx_cmd_b, 4);
skb_push(skb, 4);
cpu_to_le32s(&tx_cmd_a);
memcpy(skb->data, &tx_cmd_a, 4);
ptr = skb_push(skb, 8);
put_unaligned_le32(tx_cmd_a, ptr);
put_unaligned_le32(tx_cmd_b, ptr + 4);
return skb;
}

11
drivers/net/usb/smsc75xx.c
View File

@ -2255,6 +2255,7 @@ static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
struct sk_buff *skb, gfp_t flags)
{
u32 tx_cmd_a, tx_cmd_b;
void *ptr;
if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
dev_kfree_skb_any(skb);
@ -2275,13 +2276,9 @@ static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
tx_cmd_b = 0;
}
skb_push(skb, 4);
cpu_to_le32s(&tx_cmd_b);
memcpy(skb->data, &tx_cmd_b, 4);
skb_push(skb, 4);
cpu_to_le32s(&tx_cmd_a);
memcpy(skb->data, &tx_cmd_a, 4);
ptr = skb_push(skb, 8);
put_unaligned_le32(tx_cmd_a, ptr);
put_unaligned_le32(tx_cmd_b, ptr + 4);
return skb;
}

9
drivers/net/usb/sr9800.c
View File

@ -115,6 +115,7 @@ static struct sk_buff *sr_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
u32 padbytes = 0xffff0000;
u32 packet_len;
int padlen;
void *ptr;
padlen = ((skb->len + 4) % (dev->maxpacket - 1)) ? 0 : 4;
@ -133,14 +134,12 @@ static struct sk_buff *sr_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
return NULL;
}
skb_push(skb, 4);
ptr = skb_push(skb, 4);
packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
cpu_to_le32s(&packet_len);
skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
put_unaligned_le32(packet_len, ptr);
if (padlen) {
cpu_to_le32s(&padbytes);
memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
put_unaligned_le32(padbytes, skb_tail_pointer(skb));
skb_put(skb, sizeof(padbytes));
}