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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2019 Intel Corporation. */
3
4#include "fm10k.h"
5
6/**
7 * fm10k_dcbnl_ieee_getets - get the ETS configuration for the device
8 * @dev: netdev interface for the device
9 * @ets: ETS structure to push configuration to
10 **/
11static int fm10k_dcbnl_ieee_getets(struct net_device *dev, struct ieee_ets *ets)
12{
13 int i;
14
15 /* we support 8 TCs in all modes */
16 ets->ets_cap = IEEE_8021QAZ_MAX_TCS;
17 ets->cbs = 0;
18
19 /* we only support strict priority and cannot do traffic shaping */
20 memset(ets->tc_tx_bw, 0, sizeof(ets->tc_tx_bw));
21 memset(ets->tc_rx_bw, 0, sizeof(ets->tc_rx_bw));
22 memset(ets->tc_tsa, IEEE_8021QAZ_TSA_STRICT, sizeof(ets->tc_tsa));
23
24 /* populate the prio map based on the netdev */
25 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
26 ets->prio_tc[i] = netdev_get_prio_tc_map(dev, i);
27
28 return 0;
29}
30
31/**
32 * fm10k_dcbnl_ieee_setets - set the ETS configuration for the device
33 * @dev: netdev interface for the device
34 * @ets: ETS structure to pull configuration from
35 **/
36static int fm10k_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)
37{
38 u8 num_tc = 0;
39 int i;
40
41 /* verify type and determine num_tcs needed */
42 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
43 if (ets->tc_tx_bw[i] || ets->tc_rx_bw[i])
44 return -EINVAL;
45 if (ets->tc_tsa[i] != IEEE_8021QAZ_TSA_STRICT)
46 return -EINVAL;
47 if (ets->prio_tc[i] > num_tc)
48 num_tc = ets->prio_tc[i];
49 }
50
51 /* if requested TC is greater than 0 then num_tcs is max + 1 */
52 if (num_tc)
53 num_tc++;
54
55 if (num_tc > IEEE_8021QAZ_MAX_TCS)
56 return -EINVAL;
57
58 /* update TC hardware mapping if necessary */
59 if (num_tc != netdev_get_num_tc(dev)) {
60 int err = fm10k_setup_tc(dev, num_tc);
61 if (err)
62 return err;
63 }
64
65 /* update priority mapping */
66 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
67 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
68
69 return 0;
70}
71
72/**
73 * fm10k_dcbnl_ieee_getpfc - get the PFC configuration for the device
74 * @dev: netdev interface for the device
75 * @pfc: PFC structure to push configuration to
76 **/
77static int fm10k_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
78{
79 struct fm10k_intfc *interface = netdev_priv(dev);
80
81 /* record flow control max count and state of TCs */
82 pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;
83 pfc->pfc_en = interface->pfc_en;
84
85 return 0;
86}
87
88/**
89 * fm10k_dcbnl_ieee_setpfc - set the PFC configuration for the device
90 * @dev: netdev interface for the device
91 * @pfc: PFC structure to pull configuration from
92 **/
93static int fm10k_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc)
94{
95 struct fm10k_intfc *interface = netdev_priv(dev);
96
97 /* record PFC configuration to interface */
98 interface->pfc_en = pfc->pfc_en;
99
100 /* if we are running update the drop_en state for all queues */
101 if (netif_running(dev))
102 fm10k_update_rx_drop_en(interface);
103
104 return 0;
105}
106
107/**
108 * fm10k_dcbnl_getdcbx - get the DCBX configuration for the device
109 * @dev: netdev interface for the device
110 *
111 * Returns that we support only IEEE DCB for this interface
112 **/
113static u8 fm10k_dcbnl_getdcbx(struct net_device __always_unused *dev)
114{
115 return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
116}
117
118/**
119 * fm10k_dcbnl_setdcbx - get the DCBX configuration for the device
120 * @dev: netdev interface for the device
121 * @mode: new mode for this device
122 *
123 * Returns error on attempt to enable anything but IEEE DCB for this interface
124 **/
125static u8 fm10k_dcbnl_setdcbx(struct net_device __always_unused *dev, u8 mode)
126{
127 return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0;
128}
129
130static const struct dcbnl_rtnl_ops fm10k_dcbnl_ops = {
131 .ieee_getets = fm10k_dcbnl_ieee_getets,
132 .ieee_setets = fm10k_dcbnl_ieee_setets,
133 .ieee_getpfc = fm10k_dcbnl_ieee_getpfc,
134 .ieee_setpfc = fm10k_dcbnl_ieee_setpfc,
135
136 .getdcbx = fm10k_dcbnl_getdcbx,
137 .setdcbx = fm10k_dcbnl_setdcbx,
138};
139
140/**
141 * fm10k_dcbnl_set_ops - Configures dcbnl ops pointer for netdev
142 * @dev: netdev interface for the device
143 *
144 * Enables PF for DCB by assigning DCBNL ops pointer.
145 **/
146void fm10k_dcbnl_set_ops(struct net_device *dev)
147{
148 struct fm10k_intfc *interface = netdev_priv(dev);
149 struct fm10k_hw *hw = &interface->hw;
150
151 if (hw->mac.type == fm10k_mac_pf)
152 dev->dcbnl_ops = &fm10k_dcbnl_ops;
153}
1/* Intel Ethernet Switch Host Interface Driver
2 * Copyright(c) 2013 - 2015 Intel Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * The full GNU General Public License is included in this distribution in
14 * the file called "COPYING".
15 *
16 * Contact Information:
17 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
18 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
19 */
20
21#include "fm10k.h"
22
23/**
24 * fm10k_dcbnl_ieee_getets - get the ETS configuration for the device
25 * @dev: netdev interface for the device
26 * @ets: ETS structure to push configuration to
27 **/
28static int fm10k_dcbnl_ieee_getets(struct net_device *dev, struct ieee_ets *ets)
29{
30 int i;
31
32 /* we support 8 TCs in all modes */
33 ets->ets_cap = IEEE_8021QAZ_MAX_TCS;
34 ets->cbs = 0;
35
36 /* we only support strict priority and cannot do traffic shaping */
37 memset(ets->tc_tx_bw, 0, sizeof(ets->tc_tx_bw));
38 memset(ets->tc_rx_bw, 0, sizeof(ets->tc_rx_bw));
39 memset(ets->tc_tsa, IEEE_8021QAZ_TSA_STRICT, sizeof(ets->tc_tsa));
40
41 /* populate the prio map based on the netdev */
42 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
43 ets->prio_tc[i] = netdev_get_prio_tc_map(dev, i);
44
45 return 0;
46}
47
48/**
49 * fm10k_dcbnl_ieee_setets - set the ETS configuration for the device
50 * @dev: netdev interface for the device
51 * @ets: ETS structure to pull configuration from
52 **/
53static int fm10k_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)
54{
55 u8 num_tc = 0;
56 int i, err;
57
58 /* verify type and determine num_tcs needed */
59 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
60 if (ets->tc_tx_bw[i] || ets->tc_rx_bw[i])
61 return -EINVAL;
62 if (ets->tc_tsa[i] != IEEE_8021QAZ_TSA_STRICT)
63 return -EINVAL;
64 if (ets->prio_tc[i] > num_tc)
65 num_tc = ets->prio_tc[i];
66 }
67
68 /* if requested TC is greater than 0 then num_tcs is max + 1 */
69 if (num_tc)
70 num_tc++;
71
72 if (num_tc > IEEE_8021QAZ_MAX_TCS)
73 return -EINVAL;
74
75 /* update TC hardware mapping if necessary */
76 if (num_tc != netdev_get_num_tc(dev)) {
77 err = fm10k_setup_tc(dev, num_tc);
78 if (err)
79 return err;
80 }
81
82 /* update priority mapping */
83 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
84 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
85
86 return 0;
87}
88
89/**
90 * fm10k_dcbnl_ieee_getpfc - get the PFC configuration for the device
91 * @dev: netdev interface for the device
92 * @pfc: PFC structure to push configuration to
93 **/
94static int fm10k_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
95{
96 struct fm10k_intfc *interface = netdev_priv(dev);
97
98 /* record flow control max count and state of TCs */
99 pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;
100 pfc->pfc_en = interface->pfc_en;
101
102 return 0;
103}
104
105/**
106 * fm10k_dcbnl_ieee_setpfc - set the PFC configuration for the device
107 * @dev: netdev interface for the device
108 * @pfc: PFC structure to pull configuration from
109 **/
110static int fm10k_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc)
111{
112 struct fm10k_intfc *interface = netdev_priv(dev);
113
114 /* record PFC configuration to interface */
115 interface->pfc_en = pfc->pfc_en;
116
117 /* if we are running update the drop_en state for all queues */
118 if (netif_running(dev))
119 fm10k_update_rx_drop_en(interface);
120
121 return 0;
122}
123
124/**
125 * fm10k_dcbnl_ieee_getdcbx - get the DCBX configuration for the device
126 * @dev: netdev interface for the device
127 *
128 * Returns that we support only IEEE DCB for this interface
129 **/
130static u8 fm10k_dcbnl_getdcbx(struct net_device __always_unused *dev)
131{
132 return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
133}
134
135/**
136 * fm10k_dcbnl_ieee_setdcbx - get the DCBX configuration for the device
137 * @dev: netdev interface for the device
138 * @mode: new mode for this device
139 *
140 * Returns error on attempt to enable anything but IEEE DCB for this interface
141 **/
142static u8 fm10k_dcbnl_setdcbx(struct net_device __always_unused *dev, u8 mode)
143{
144 return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0;
145}
146
147static const struct dcbnl_rtnl_ops fm10k_dcbnl_ops = {
148 .ieee_getets = fm10k_dcbnl_ieee_getets,
149 .ieee_setets = fm10k_dcbnl_ieee_setets,
150 .ieee_getpfc = fm10k_dcbnl_ieee_getpfc,
151 .ieee_setpfc = fm10k_dcbnl_ieee_setpfc,
152
153 .getdcbx = fm10k_dcbnl_getdcbx,
154 .setdcbx = fm10k_dcbnl_setdcbx,
155};
156
157/**
158 * fm10k_dcbnl_set_ops - Configures dcbnl ops pointer for netdev
159 * @dev: netdev interface for the device
160 *
161 * Enables PF for DCB by assigning DCBNL ops pointer.
162 **/
163void fm10k_dcbnl_set_ops(struct net_device *dev)
164{
165 struct fm10k_intfc *interface = netdev_priv(dev);
166 struct fm10k_hw *hw = &interface->hw;
167
168 if (hw->mac.type == fm10k_mac_pf)
169 dev->dcbnl_ops = &fm10k_dcbnl_ops;
170}