1 /*******************************************************************************
3 * Intel Ethernet Controller XL710 Family Linux Driver
4 * Copyright(c) 2013 - 2014 Intel Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 ******************************************************************************/
27 #ifdef CONFIG_I40E_DCB
29 #include <net/dcbnl.h>
32 * i40e_get_pfc_delay - retrieve PFC Link Delay
33 * @hw: pointer to hardware struct
34 * @delay: holds the PFC Link delay value
36 * Returns PFC Link Delay from the PRTDCB_GENC.PFCLDA
38 static void i40e_get_pfc_delay(struct i40e_hw
*hw
, u16
*delay
)
42 val
= rd32(hw
, I40E_PRTDCB_GENC
);
43 *delay
= (u16
)((val
& I40E_PRTDCB_GENC_PFCLDA_MASK
) >>
44 I40E_PRTDCB_GENC_PFCLDA_SHIFT
);
48 * i40e_dcbnl_ieee_getets - retrieve local IEEE ETS configuration
49 * @netdev: the corresponding netdev
50 * @ets: structure to hold the ETS information
52 * Returns local IEEE ETS configuration
54 static int i40e_dcbnl_ieee_getets(struct net_device
*dev
,
57 struct i40e_pf
*pf
= i40e_netdev_to_pf(dev
);
58 struct i40e_dcbx_config
*dcbxcfg
;
59 struct i40e_hw
*hw
= &pf
->hw
;
61 if (!(pf
->dcbx_cap
& DCB_CAP_DCBX_VER_IEEE
))
64 dcbxcfg
= &hw
->local_dcbx_config
;
65 ets
->willing
= dcbxcfg
->etscfg
.willing
;
66 ets
->ets_cap
= dcbxcfg
->etscfg
.maxtcs
;
67 ets
->cbs
= dcbxcfg
->etscfg
.cbs
;
68 memcpy(ets
->tc_tx_bw
, dcbxcfg
->etscfg
.tcbwtable
,
69 sizeof(ets
->tc_tx_bw
));
70 memcpy(ets
->tc_rx_bw
, dcbxcfg
->etscfg
.tcbwtable
,
71 sizeof(ets
->tc_rx_bw
));
72 memcpy(ets
->tc_tsa
, dcbxcfg
->etscfg
.tsatable
,
74 memcpy(ets
->prio_tc
, dcbxcfg
->etscfg
.prioritytable
,
75 sizeof(ets
->prio_tc
));
76 memcpy(ets
->tc_reco_bw
, dcbxcfg
->etsrec
.tcbwtable
,
77 sizeof(ets
->tc_reco_bw
));
78 memcpy(ets
->tc_reco_tsa
, dcbxcfg
->etsrec
.tsatable
,
79 sizeof(ets
->tc_reco_tsa
));
80 memcpy(ets
->reco_prio_tc
, dcbxcfg
->etscfg
.prioritytable
,
81 sizeof(ets
->reco_prio_tc
));
87 * i40e_dcbnl_ieee_getpfc - retrieve local IEEE PFC configuration
88 * @netdev: the corresponding netdev
89 * @ets: structure to hold the PFC information
91 * Returns local IEEE PFC configuration
93 static int i40e_dcbnl_ieee_getpfc(struct net_device
*dev
,
96 struct i40e_pf
*pf
= i40e_netdev_to_pf(dev
);
97 struct i40e_dcbx_config
*dcbxcfg
;
98 struct i40e_hw
*hw
= &pf
->hw
;
101 if (!(pf
->dcbx_cap
& DCB_CAP_DCBX_VER_IEEE
))
104 dcbxcfg
= &hw
->local_dcbx_config
;
105 pfc
->pfc_cap
= dcbxcfg
->pfc
.pfccap
;
106 pfc
->pfc_en
= dcbxcfg
->pfc
.pfcenable
;
107 pfc
->mbc
= dcbxcfg
->pfc
.mbc
;
108 i40e_get_pfc_delay(hw
, &pfc
->delay
);
110 /* Get Requests/Indicatiosn */
111 for (i
= 0; i
< I40E_MAX_TRAFFIC_CLASS
; i
++) {
112 pfc
->requests
[i
] = pf
->stats
.priority_xoff_tx
[i
];
113 pfc
->indications
[i
] = pf
->stats
.priority_xoff_rx
[i
];
120 * i40e_dcbnl_getdcbx - retrieve current DCBx capability
121 * @netdev: the corresponding netdev
123 * Returns DCBx capability features
125 static u8
i40e_dcbnl_getdcbx(struct net_device
*dev
)
127 struct i40e_pf
*pf
= i40e_netdev_to_pf(dev
);
133 * i40e_dcbnl_get_perm_hw_addr - MAC address used by DCBx
134 * @netdev: the corresponding netdev
136 * Returns the SAN MAC address used for LLDP exchange
138 static void i40e_dcbnl_get_perm_hw_addr(struct net_device
*dev
,
141 struct i40e_pf
*pf
= i40e_netdev_to_pf(dev
);
144 memset(perm_addr
, 0xff, MAX_ADDR_LEN
);
146 for (i
= 0; i
< dev
->addr_len
; i
++)
147 perm_addr
[i
] = pf
->hw
.mac
.perm_addr
[i
];
149 for (j
= 0; j
< dev
->addr_len
; j
++, i
++)
150 perm_addr
[i
] = pf
->hw
.mac
.san_addr
[j
];
153 static const struct dcbnl_rtnl_ops dcbnl_ops
= {
154 .ieee_getets
= i40e_dcbnl_ieee_getets
,
155 .ieee_getpfc
= i40e_dcbnl_ieee_getpfc
,
156 .getdcbx
= i40e_dcbnl_getdcbx
,
157 .getpermhwaddr
= i40e_dcbnl_get_perm_hw_addr
,
161 * i40e_dcbnl_set_all - set all the apps and ieee data from DCBx config
162 * @vsi: the corresponding vsi
164 * Set up all the IEEE APPs in the DCBNL App Table and generate event for
167 void i40e_dcbnl_set_all(struct i40e_vsi
*vsi
)
169 struct net_device
*dev
= vsi
->netdev
;
170 struct i40e_pf
*pf
= i40e_netdev_to_pf(dev
);
171 struct i40e_dcbx_config
*dcbxcfg
;
172 struct i40e_hw
*hw
= &pf
->hw
;
177 /* DCB not enabled */
178 if (!(pf
->flags
& I40E_FLAG_DCB_ENABLED
))
181 /* MFP mode but not an iSCSI PF so return */
182 if ((pf
->flags
& I40E_FLAG_MFP_ENABLED
) && !(pf
->hw
.func_caps
.iscsi
))
185 dcbxcfg
= &hw
->local_dcbx_config
;
187 /* Set up all the App TLVs if DCBx is negotiated */
188 for (i
= 0; i
< dcbxcfg
->numapps
; i
++) {
189 prio
= dcbxcfg
->app
[i
].priority
;
190 tc_map
= BIT(dcbxcfg
->etscfg
.prioritytable
[prio
]);
192 /* Add APP only if the TC is enabled for this VSI */
193 if (tc_map
& vsi
->tc_config
.enabled_tc
) {
194 sapp
.selector
= dcbxcfg
->app
[i
].selector
;
195 sapp
.protocol
= dcbxcfg
->app
[i
].protocolid
;
196 sapp
.priority
= prio
;
197 dcb_ieee_setapp(dev
, &sapp
);
201 /* Notify user-space of the changes */
202 dcbnl_ieee_notify(dev
, RTM_SETDCB
, DCB_CMD_IEEE_SET
, 0, 0);
206 * i40e_dcbnl_vsi_del_app - Delete APP for given VSI
207 * @vsi: the corresponding vsi
208 * @app: APP to delete
210 * Delete given APP from the DCBNL APP table for given
213 static int i40e_dcbnl_vsi_del_app(struct i40e_vsi
*vsi
,
214 struct i40e_dcb_app_priority_table
*app
)
216 struct net_device
*dev
= vsi
->netdev
;
222 sapp
.selector
= app
->selector
;
223 sapp
.protocol
= app
->protocolid
;
224 sapp
.priority
= app
->priority
;
225 return dcb_ieee_delapp(dev
, &sapp
);
229 * i40e_dcbnl_del_app - Delete APP on all VSIs
230 * @pf: the corresponding PF
231 * @app: APP to delete
233 * Delete given APP from all the VSIs for given PF
235 static void i40e_dcbnl_del_app(struct i40e_pf
*pf
,
236 struct i40e_dcb_app_priority_table
*app
)
240 for (v
= 0; v
< pf
->num_alloc_vsi
; v
++) {
241 if (pf
->vsi
[v
] && pf
->vsi
[v
]->netdev
) {
242 err
= i40e_dcbnl_vsi_del_app(pf
->vsi
[v
], app
);
243 dev_dbg(&pf
->pdev
->dev
, "Deleting app for VSI seid=%d err=%d sel=%d proto=0x%x prio=%d\n",
244 pf
->vsi
[v
]->seid
, err
, app
->selector
,
245 app
->protocolid
, app
->priority
);
251 * i40e_dcbnl_find_app - Search APP in given DCB config
252 * @cfg: DCBX configuration data
253 * @app: APP to search for
255 * Find given APP in the DCB configuration
257 static bool i40e_dcbnl_find_app(struct i40e_dcbx_config
*cfg
,
258 struct i40e_dcb_app_priority_table
*app
)
262 for (i
= 0; i
< cfg
->numapps
; i
++) {
263 if (app
->selector
== cfg
->app
[i
].selector
&&
264 app
->protocolid
== cfg
->app
[i
].protocolid
&&
265 app
->priority
== cfg
->app
[i
].priority
)
273 * i40e_dcbnl_flush_apps - Delete all removed APPs
274 * @pf: the corresponding PF
275 * @old_cfg: old DCBX configuration data
276 * @new_cfg: new DCBX configuration data
278 * Find and delete all APPs that are not present in the passed
281 void i40e_dcbnl_flush_apps(struct i40e_pf
*pf
,
282 struct i40e_dcbx_config
*old_cfg
,
283 struct i40e_dcbx_config
*new_cfg
)
285 struct i40e_dcb_app_priority_table app
;
288 /* MFP mode but not an iSCSI PF so return */
289 if ((pf
->flags
& I40E_FLAG_MFP_ENABLED
) && !(pf
->hw
.func_caps
.iscsi
))
292 for (i
= 0; i
< old_cfg
->numapps
; i
++) {
293 app
= old_cfg
->app
[i
];
294 /* The APP is not available anymore delete it */
295 if (!i40e_dcbnl_find_app(new_cfg
, &app
))
296 i40e_dcbnl_del_app(pf
, &app
);
301 * i40e_dcbnl_setup - DCBNL setup
302 * @vsi: the corresponding vsi
304 * Set up DCBNL ops and initial APP TLVs
306 void i40e_dcbnl_setup(struct i40e_vsi
*vsi
)
308 struct net_device
*dev
= vsi
->netdev
;
309 struct i40e_pf
*pf
= i40e_netdev_to_pf(dev
);
311 /* Not DCB capable */
312 if (!(pf
->flags
& I40E_FLAG_DCB_CAPABLE
))
315 dev
->dcbnl_ops
= &dcbnl_ops
;
317 /* Set initial IEEE DCB settings */
318 i40e_dcbnl_set_all(vsi
);
320 #endif /* CONFIG_I40E_DCB */