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r8152: fix the rx early size of RTL8153

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revert commit a59e6d8152 ("r8152: correct the rx early size") and
fix the rx early size as

	(rx buffer size - rx packet size - rx desc size - alignment) / 4

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
hayeswang 2017-03-20 16:13:45 +08:00 committed by David S. Miller
parent 210c4f70b4
commit b20cb60e2b
1 changed files with 4 additions and 3 deletions
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7
drivers/net/usb/r8152.c
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@ -32,7 +32,7 @@
#define NETNEXT_VERSION "08"
/* Information for net */
#define NET_VERSION "8"
#define NET_VERSION "9"
#define DRIVER_VERSION "v1." NETNEXT_VERSION "." NET_VERSION
#define DRIVER_AUTHOR "Realtek linux nic maintainers <nic_swsd@realtek.com>"
@ -501,6 +501,8 @@ enum rtl_register_content {
#define RTL8153_RMS RTL8153_MAX_PACKET
#define RTL8152_TX_TIMEOUT (5 * HZ)
#define RTL8152_NAPI_WEIGHT 64
#define rx_reserved_size(x) ((x) + VLAN_ETH_HLEN + CRC_SIZE + \
sizeof(struct rx_desc) + RX_ALIGN)
/* rtl8152 flags */
enum rtl8152_flags {
@ -2253,8 +2255,7 @@ static void r8153_set_rx_early_timeout(struct r8152 *tp)
static void r8153_set_rx_early_size(struct r8152 *tp)
{
u32 mtu = tp->netdev->mtu;
u32 ocp_data = (agg_buf_sz - mtu - VLAN_ETH_HLEN - VLAN_HLEN) / 8;
u32 ocp_data = (agg_buf_sz - rx_reserved_size(tp->netdev->mtu)) / 4;
ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_SIZE, ocp_data);
}