5113f6f70
 김현기
kernel add
|
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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* Intel Ethernet Switch Host Interface Driver
* Copyright(c) 2013 - 2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*/
#include "fm10k.h"
#ifdef CONFIG_DCB
/**
* fm10k_dcbnl_ieee_getets - get the ETS configuration for the device
* @dev: netdev interface for the device
* @ets: ETS structure to push configuration to
**/
static int fm10k_dcbnl_ieee_getets(struct net_device *dev, struct ieee_ets *ets)
{
int i;
/* we support 8 TCs in all modes */
ets->ets_cap = IEEE_8021QAZ_MAX_TCS;
ets->cbs = 0;
/* we only support strict priority and cannot do traffic shaping */
memset(ets->tc_tx_bw, 0, sizeof(ets->tc_tx_bw));
memset(ets->tc_rx_bw, 0, sizeof(ets->tc_rx_bw));
memset(ets->tc_tsa, IEEE_8021QAZ_TSA_STRICT, sizeof(ets->tc_tsa));
/* populate the prio map based on the netdev */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
ets->prio_tc[i] = netdev_get_prio_tc_map(dev, i);
return 0;
}
/**
* fm10k_dcbnl_ieee_setets - set the ETS configuration for the device
* @dev: netdev interface for the device
* @ets: ETS structure to pull configuration from
**/
static int fm10k_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)
{
u8 num_tc = 0;
int i, err;
/* verify type and determine num_tcs needed */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
if (ets->tc_tx_bw[i] || ets->tc_rx_bw[i])
return -EINVAL;
if (ets->tc_tsa[i] != IEEE_8021QAZ_TSA_STRICT)
return -EINVAL;
if (ets->prio_tc[i] > num_tc)
num_tc = ets->prio_tc[i];
}
/* if requested TC is greater than 0 then num_tcs is max + 1 */
if (num_tc)
num_tc++;
if (num_tc > IEEE_8021QAZ_MAX_TCS)
return -EINVAL;
/* update TC hardware mapping if necessary */
if (num_tc != netdev_get_num_tc(dev)) {
err = fm10k_setup_tc(dev, num_tc);
if (err)
return err;
}
/* update priority mapping */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
return 0;
}
/**
* fm10k_dcbnl_ieee_getpfc - get the PFC configuration for the device
* @dev: netdev interface for the device
* @pfc: PFC structure to push configuration to
**/
static int fm10k_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
{
struct fm10k_intfc *interface = netdev_priv(dev);
/* record flow control max count and state of TCs */
pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;
pfc->pfc_en = interface->pfc_en;
return 0;
}
/**
* fm10k_dcbnl_ieee_setpfc - set the PFC configuration for the device
* @dev: netdev interface for the device
* @pfc: PFC structure to pull configuration from
**/
static int fm10k_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc)
{
struct fm10k_intfc *interface = netdev_priv(dev);
/* record PFC configuration to interface */
interface->pfc_en = pfc->pfc_en;
/* if we are running update the drop_en state for all queues */
if (netif_running(dev))
fm10k_update_rx_drop_en(interface);
return 0;
}
/**
* fm10k_dcbnl_ieee_getdcbx - get the DCBX configuration for the device
* @dev: netdev interface for the device
*
* Returns that we support only IEEE DCB for this interface
**/
static u8 fm10k_dcbnl_getdcbx(struct net_device __always_unused *dev)
{
return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
}
/**
* fm10k_dcbnl_ieee_setdcbx - get the DCBX configuration for the device
* @dev: netdev interface for the device
* @mode: new mode for this device
*
* Returns error on attempt to enable anything but IEEE DCB for this interface
**/
static u8 fm10k_dcbnl_setdcbx(struct net_device __always_unused *dev, u8 mode)
{
return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0;
}
static const struct dcbnl_rtnl_ops fm10k_dcbnl_ops = {
.ieee_getets = fm10k_dcbnl_ieee_getets,
.ieee_setets = fm10k_dcbnl_ieee_setets,
.ieee_getpfc = fm10k_dcbnl_ieee_getpfc,
.ieee_setpfc = fm10k_dcbnl_ieee_setpfc,
.getdcbx = fm10k_dcbnl_getdcbx,
.setdcbx = fm10k_dcbnl_setdcbx,
};
#endif /* CONFIG_DCB */
/**
* fm10k_dcbnl_set_ops - Configures dcbnl ops pointer for netdev
* @dev: netdev interface for the device
*
* Enables PF for DCB by assigning DCBNL ops pointer.
**/
void fm10k_dcbnl_set_ops(struct net_device *dev)
{
#ifdef CONFIG_DCB
struct fm10k_intfc *interface = netdev_priv(dev);
struct fm10k_hw *hw = &interface->hw;
if (hw->mac.type == fm10k_mac_pf)
dev->dcbnl_ops = &fm10k_dcbnl_ops;
#endif /* CONFIG_DCB */
}
|