forked from openwrt/openwrt
/
792-v5.13-r8152-add-help-function-to-change-mtu.patch
157 lines (133 loc) · 5.18 KB
/
792-v5.13-r8152-add-help-function-to-change-mtu.patch
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
From f010a7d51cbb42bdb956f0a28b8868b15d7a3816 Mon Sep 17 00:00:00 2001
From: Hayes Wang <hayeswang@realtek.com>
Date: Fri, 16 Apr 2021 16:04:34 +0800
Subject: [PATCH] r8152: add help function to change mtu
commit 67ce1a806f164e59a074fea8809725d3411eaa20 upstream.
The different chips may have different requests when changing mtu.
Therefore, add a new help function of rtl_ops to change mtu. Besides,
reset the tx/rx after changing mtu.
Additionally, add mtu_to_size() and size_to_mtu() macros to simplify
the code.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/r8152.c | 53 ++++++++++++++++++++++++-----------------
1 file changed, 31 insertions(+), 22 deletions(-)
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -658,15 +658,13 @@ enum rtl_register_content {
#define INTR_LINK 0x0004
-#define RTL8153_MAX_PACKET 9216 /* 9K */
-#define RTL8153_MAX_MTU (RTL8153_MAX_PACKET - VLAN_ETH_HLEN - \
- ETH_FCS_LEN)
#define RTL8152_RMS (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
#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 + ETH_FCS_LEN + \
- sizeof(struct rx_desc) + RX_ALIGN)
+#define mtu_to_size(m) ((m) + VLAN_ETH_HLEN + ETH_FCS_LEN)
+#define size_to_mtu(s) ((s) - VLAN_ETH_HLEN - ETH_FCS_LEN)
+#define rx_reserved_size(x) (mtu_to_size(x) + sizeof(struct rx_desc) + RX_ALIGN)
/* rtl8152 flags */
enum rtl8152_flags {
@@ -796,6 +794,7 @@ struct r8152 {
bool (*in_nway)(struct r8152 *tp);
void (*hw_phy_cfg)(struct r8152 *tp);
void (*autosuspend_en)(struct r8152 *tp, bool enable);
+ void (*change_mtu)(struct r8152 *tp);
} rtl_ops;
struct ups_info {
@@ -1022,8 +1021,7 @@ enum tx_csum_stat {
static const int multicast_filter_limit = 32;
static unsigned int agg_buf_sz = 16384;
-#define RTL_LIMITED_TSO_SIZE (agg_buf_sz - sizeof(struct tx_desc) - \
- VLAN_ETH_HLEN - ETH_FCS_LEN)
+#define RTL_LIMITED_TSO_SIZE (size_to_mtu(agg_buf_sz) - sizeof(struct tx_desc))
static
int get_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data)
@@ -2633,10 +2631,7 @@ static void rtl8152_nic_reset(struct r81
static void set_tx_qlen(struct r8152 *tp)
{
- struct net_device *netdev = tp->netdev;
-
- tp->tx_qlen = agg_buf_sz / (netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN +
- sizeof(struct tx_desc));
+ tp->tx_qlen = agg_buf_sz / (mtu_to_size(tp->netdev->mtu) + sizeof(struct tx_desc));
}
static inline u8 rtl8152_get_speed(struct r8152 *tp)
@@ -4725,6 +4720,12 @@ static void r8153b_hw_phy_cfg(struct r81
set_bit(PHY_RESET, &tp->flags);
}
+static void rtl8153_change_mtu(struct r8152 *tp)
+{
+ ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, mtu_to_size(tp->netdev->mtu));
+ ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
+}
+
static void r8153_first_init(struct r8152 *tp)
{
u32 ocp_data;
@@ -4757,9 +4758,7 @@ static void r8153_first_init(struct r815
rtl_rx_vlan_en(tp, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);
- ocp_data = tp->netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
- ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, ocp_data);
- ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
+ rtl8153_change_mtu(tp);
ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0);
ocp_data |= TCR0_AUTO_FIFO;
@@ -4794,8 +4793,7 @@ static void r8153_enter_oob(struct r8152
wait_oob_link_list_ready(tp);
- ocp_data = tp->netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
- ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, ocp_data);
+ ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, mtu_to_size(tp->netdev->mtu));
switch (tp->version) {
case RTL_VER_03:
@@ -6518,12 +6516,21 @@ static int rtl8152_change_mtu(struct net
dev->mtu = new_mtu;
if (netif_running(dev)) {
- u32 rms = new_mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
-
- ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, rms);
+ if (tp->rtl_ops.change_mtu)
+ tp->rtl_ops.change_mtu(tp);
- if (netif_carrier_ok(dev))
- r8153_set_rx_early_size(tp);
+ if (netif_carrier_ok(dev)) {
+ netif_stop_queue(dev);
+ napi_disable(&tp->napi);
+ tasklet_disable(&tp->tx_tl);
+ tp->rtl_ops.disable(tp);
+ tp->rtl_ops.enable(tp);
+ rtl_start_rx(tp);
+ tasklet_enable(&tp->tx_tl);
+ napi_enable(&tp->napi);
+ rtl8152_set_rx_mode(dev);
+ netif_wake_queue(dev);
+ }
}
mutex_unlock(&tp->control);
@@ -6612,6 +6619,7 @@ static int rtl_ops_init(struct r8152 *tp
ops->in_nway = rtl8153_in_nway;
ops->hw_phy_cfg = r8153_hw_phy_cfg;
ops->autosuspend_en = rtl8153_runtime_enable;
+ ops->change_mtu = rtl8153_change_mtu;
if (tp->udev->speed < USB_SPEED_SUPER)
tp->rx_buf_sz = 16 * 1024;
else
@@ -6633,6 +6641,7 @@ static int rtl_ops_init(struct r8152 *tp
ops->in_nway = rtl8153_in_nway;
ops->hw_phy_cfg = r8153b_hw_phy_cfg;
ops->autosuspend_en = rtl8153b_runtime_enable;
+ ops->change_mtu = rtl8153_change_mtu;
tp->rx_buf_sz = 32 * 1024;
tp->eee_en = true;
tp->eee_adv = MDIO_EEE_1000T | MDIO_EEE_100TX;
@@ -6853,7 +6862,7 @@ static int rtl8152_probe(struct usb_inte
netdev->max_mtu = ETH_DATA_LEN;
break;
default:
- netdev->max_mtu = RTL8153_MAX_MTU;
+ netdev->max_mtu = size_to_mtu(9 * 1024);
break;
}