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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (C) 2018-2020, Intel Corporation. */
3
4#include "ice.h"
5#include "ice_fltr.h"
6
7/**
8 * ice_fltr_free_list - free filter lists helper
9 * @dev: pointer to the device struct
10 * @h: pointer to the list head to be freed
11 *
12 * Helper function to free filter lists previously created using
13 * ice_fltr_add_mac_to_list
14 */
15void ice_fltr_free_list(struct device *dev, struct list_head *h)
16{
17 struct ice_fltr_list_entry *e, *tmp;
18
19 list_for_each_entry_safe(e, tmp, h, list_entry) {
20 list_del(&e->list_entry);
21 devm_kfree(dev, e);
22 }
23}
24
25/**
26 * ice_fltr_add_entry_to_list - allocate and add filter entry to list
27 * @dev: pointer to device needed by alloc function
28 * @info: filter info struct that gets added to the passed in list
29 * @list: pointer to the list which contains MAC filters entry
30 */
31static int
32ice_fltr_add_entry_to_list(struct device *dev, struct ice_fltr_info *info,
33 struct list_head *list)
34{
35 struct ice_fltr_list_entry *entry;
36
37 entry = devm_kzalloc(dev, sizeof(*entry), GFP_ATOMIC);
38 if (!entry)
39 return -ENOMEM;
40
41 entry->fltr_info = *info;
42
43 INIT_LIST_HEAD(&entry->list_entry);
44 list_add(&entry->list_entry, list);
45
46 return 0;
47}
48
49/**
50 * ice_fltr_add_mac_list - add list of MAC filters
51 * @vsi: pointer to VSI struct
52 * @list: list of filters
53 */
54enum ice_status
55ice_fltr_add_mac_list(struct ice_vsi *vsi, struct list_head *list)
56{
57 return ice_add_mac(&vsi->back->hw, list);
58}
59
60/**
61 * ice_fltr_remove_mac_list - remove list of MAC filters
62 * @vsi: pointer to VSI struct
63 * @list: list of filters
64 */
65enum ice_status
66ice_fltr_remove_mac_list(struct ice_vsi *vsi, struct list_head *list)
67{
68 return ice_remove_mac(&vsi->back->hw, list);
69}
70
71/**
72 * ice_fltr_add_vlan_list - add list of VLAN filters
73 * @vsi: pointer to VSI struct
74 * @list: list of filters
75 */
76static enum ice_status
77ice_fltr_add_vlan_list(struct ice_vsi *vsi, struct list_head *list)
78{
79 return ice_add_vlan(&vsi->back->hw, list);
80}
81
82/**
83 * ice_fltr_remove_vlan_list - remove list of VLAN filters
84 * @vsi: pointer to VSI struct
85 * @list: list of filters
86 */
87static enum ice_status
88ice_fltr_remove_vlan_list(struct ice_vsi *vsi, struct list_head *list)
89{
90 return ice_remove_vlan(&vsi->back->hw, list);
91}
92
93/**
94 * ice_fltr_add_eth_list - add list of ethertype filters
95 * @vsi: pointer to VSI struct
96 * @list: list of filters
97 */
98static enum ice_status
99ice_fltr_add_eth_list(struct ice_vsi *vsi, struct list_head *list)
100{
101 return ice_add_eth_mac(&vsi->back->hw, list);
102}
103
104/**
105 * ice_fltr_remove_eth_list - remove list of ethertype filters
106 * @vsi: pointer to VSI struct
107 * @list: list of filters
108 */
109static enum ice_status
110ice_fltr_remove_eth_list(struct ice_vsi *vsi, struct list_head *list)
111{
112 return ice_remove_eth_mac(&vsi->back->hw, list);
113}
114
115/**
116 * ice_fltr_remove_all - remove all filters associated with VSI
117 * @vsi: pointer to VSI struct
118 */
119void ice_fltr_remove_all(struct ice_vsi *vsi)
120{
121 ice_remove_vsi_fltr(&vsi->back->hw, vsi->idx);
122}
123
124/**
125 * ice_fltr_add_mac_to_list - add MAC filter info to exsisting list
126 * @vsi: pointer to VSI struct
127 * @list: list to add filter info to
128 * @mac: MAC address to add
129 * @action: filter action
130 */
131int
132ice_fltr_add_mac_to_list(struct ice_vsi *vsi, struct list_head *list,
133 const u8 *mac, enum ice_sw_fwd_act_type action)
134{
135 struct ice_fltr_info info = { 0 };
136
137 info.flag = ICE_FLTR_TX;
138 info.src_id = ICE_SRC_ID_VSI;
139 info.lkup_type = ICE_SW_LKUP_MAC;
140 info.fltr_act = action;
141 info.vsi_handle = vsi->idx;
142
143 ether_addr_copy(info.l_data.mac.mac_addr, mac);
144
145 return ice_fltr_add_entry_to_list(ice_pf_to_dev(vsi->back), &info,
146 list);
147}
148
149/**
150 * ice_fltr_add_vlan_to_list - add VLAN filter info to exsisting list
151 * @vsi: pointer to VSI struct
152 * @list: list to add filter info to
153 * @vlan_id: VLAN ID to add
154 * @action: filter action
155 */
156static int
157ice_fltr_add_vlan_to_list(struct ice_vsi *vsi, struct list_head *list,
158 u16 vlan_id, enum ice_sw_fwd_act_type action)
159{
160 struct ice_fltr_info info = { 0 };
161
162 info.flag = ICE_FLTR_TX;
163 info.src_id = ICE_SRC_ID_VSI;
164 info.lkup_type = ICE_SW_LKUP_VLAN;
165 info.fltr_act = action;
166 info.vsi_handle = vsi->idx;
167 info.l_data.vlan.vlan_id = vlan_id;
168
169 return ice_fltr_add_entry_to_list(ice_pf_to_dev(vsi->back), &info,
170 list);
171}
172
173/**
174 * ice_fltr_add_eth_to_list - add ethertype filter info to exsisting list
175 * @vsi: pointer to VSI struct
176 * @list: list to add filter info to
177 * @ethertype: ethertype of packet that matches filter
178 * @flag: filter direction, Tx or Rx
179 * @action: filter action
180 */
181static int
182ice_fltr_add_eth_to_list(struct ice_vsi *vsi, struct list_head *list,
183 u16 ethertype, u16 flag,
184 enum ice_sw_fwd_act_type action)
185{
186 struct ice_fltr_info info = { 0 };
187
188 info.flag = flag;
189 info.lkup_type = ICE_SW_LKUP_ETHERTYPE;
190 info.fltr_act = action;
191 info.vsi_handle = vsi->idx;
192 info.l_data.ethertype_mac.ethertype = ethertype;
193
194 if (flag == ICE_FLTR_TX)
195 info.src_id = ICE_SRC_ID_VSI;
196 else
197 info.src_id = ICE_SRC_ID_LPORT;
198
199 return ice_fltr_add_entry_to_list(ice_pf_to_dev(vsi->back), &info,
200 list);
201}
202
203/**
204 * ice_fltr_prepare_mac - add or remove MAC rule
205 * @vsi: pointer to VSI struct
206 * @mac: MAC address to add
207 * @action: action to be performed on filter match
208 * @mac_action: pointer to add or remove MAC function
209 */
210static enum ice_status
211ice_fltr_prepare_mac(struct ice_vsi *vsi, const u8 *mac,
212 enum ice_sw_fwd_act_type action,
213 enum ice_status (*mac_action)(struct ice_vsi *,
214 struct list_head *))
215{
216 enum ice_status result;
217 LIST_HEAD(tmp_list);
218
219 if (ice_fltr_add_mac_to_list(vsi, &tmp_list, mac, action)) {
220 ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
221 return ICE_ERR_NO_MEMORY;
222 }
223
224 result = mac_action(vsi, &tmp_list);
225 ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
226 return result;
227}
228
229/**
230 * ice_fltr_prepare_mac_and_broadcast - add or remove MAC and broadcast filter
231 * @vsi: pointer to VSI struct
232 * @mac: MAC address to add
233 * @action: action to be performed on filter match
234 * @mac_action: pointer to add or remove MAC function
235 */
236static enum ice_status
237ice_fltr_prepare_mac_and_broadcast(struct ice_vsi *vsi, const u8 *mac,
238 enum ice_sw_fwd_act_type action,
239 enum ice_status(*mac_action)
240 (struct ice_vsi *, struct list_head *))
241{
242 u8 broadcast[ETH_ALEN];
243 enum ice_status result;
244 LIST_HEAD(tmp_list);
245
246 eth_broadcast_addr(broadcast);
247 if (ice_fltr_add_mac_to_list(vsi, &tmp_list, mac, action) ||
248 ice_fltr_add_mac_to_list(vsi, &tmp_list, broadcast, action)) {
249 ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
250 return ICE_ERR_NO_MEMORY;
251 }
252
253 result = mac_action(vsi, &tmp_list);
254 ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
255 return result;
256}
257
258/**
259 * ice_fltr_prepare_vlan - add or remove VLAN filter
260 * @vsi: pointer to VSI struct
261 * @vlan_id: VLAN ID to add
262 * @action: action to be performed on filter match
263 * @vlan_action: pointer to add or remove VLAN function
264 */
265static enum ice_status
266ice_fltr_prepare_vlan(struct ice_vsi *vsi, u16 vlan_id,
267 enum ice_sw_fwd_act_type action,
268 enum ice_status (*vlan_action)(struct ice_vsi *,
269 struct list_head *))
270{
271 enum ice_status result;
272 LIST_HEAD(tmp_list);
273
274 if (ice_fltr_add_vlan_to_list(vsi, &tmp_list, vlan_id, action))
275 return ICE_ERR_NO_MEMORY;
276
277 result = vlan_action(vsi, &tmp_list);
278 ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
279 return result;
280}
281
282/**
283 * ice_fltr_prepare_eth - add or remove ethertype filter
284 * @vsi: pointer to VSI struct
285 * @ethertype: ethertype of packet to be filtered
286 * @flag: direction of packet, Tx or Rx
287 * @action: action to be performed on filter match
288 * @eth_action: pointer to add or remove ethertype function
289 */
290static enum ice_status
291ice_fltr_prepare_eth(struct ice_vsi *vsi, u16 ethertype, u16 flag,
292 enum ice_sw_fwd_act_type action,
293 enum ice_status (*eth_action)(struct ice_vsi *,
294 struct list_head *))
295{
296 enum ice_status result;
297 LIST_HEAD(tmp_list);
298
299 if (ice_fltr_add_eth_to_list(vsi, &tmp_list, ethertype, flag, action))
300 return ICE_ERR_NO_MEMORY;
301
302 result = eth_action(vsi, &tmp_list);
303 ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
304 return result;
305}
306
307/**
308 * ice_fltr_add_mac - add single MAC filter
309 * @vsi: pointer to VSI struct
310 * @mac: MAC to add
311 * @action: action to be performed on filter match
312 */
313enum ice_status ice_fltr_add_mac(struct ice_vsi *vsi, const u8 *mac,
314 enum ice_sw_fwd_act_type action)
315{
316 return ice_fltr_prepare_mac(vsi, mac, action, ice_fltr_add_mac_list);
317}
318
319/**
320 * ice_fltr_add_mac_and_broadcast - add single MAC and broadcast
321 * @vsi: pointer to VSI struct
322 * @mac: MAC to add
323 * @action: action to be performed on filter match
324 */
325enum ice_status
326ice_fltr_add_mac_and_broadcast(struct ice_vsi *vsi, const u8 *mac,
327 enum ice_sw_fwd_act_type action)
328{
329 return ice_fltr_prepare_mac_and_broadcast(vsi, mac, action,
330 ice_fltr_add_mac_list);
331}
332
333/**
334 * ice_fltr_remove_mac - remove MAC filter
335 * @vsi: pointer to VSI struct
336 * @mac: filter MAC to remove
337 * @action: action to remove
338 */
339enum ice_status ice_fltr_remove_mac(struct ice_vsi *vsi, const u8 *mac,
340 enum ice_sw_fwd_act_type action)
341{
342 return ice_fltr_prepare_mac(vsi, mac, action, ice_fltr_remove_mac_list);
343}
344
345/**
346 * ice_fltr_add_vlan - add single VLAN filter
347 * @vsi: pointer to VSI struct
348 * @vlan_id: VLAN ID to add
349 * @action: action to be performed on filter match
350 */
351enum ice_status ice_fltr_add_vlan(struct ice_vsi *vsi, u16 vlan_id,
352 enum ice_sw_fwd_act_type action)
353{
354 return ice_fltr_prepare_vlan(vsi, vlan_id, action,
355 ice_fltr_add_vlan_list);
356}
357
358/**
359 * ice_fltr_remove_vlan - remove VLAN filter
360 * @vsi: pointer to VSI struct
361 * @vlan_id: filter VLAN to remove
362 * @action: action to remove
363 */
364enum ice_status ice_fltr_remove_vlan(struct ice_vsi *vsi, u16 vlan_id,
365 enum ice_sw_fwd_act_type action)
366{
367 return ice_fltr_prepare_vlan(vsi, vlan_id, action,
368 ice_fltr_remove_vlan_list);
369}
370
371/**
372 * ice_fltr_add_eth - add specyfic ethertype filter
373 * @vsi: pointer to VSI struct
374 * @ethertype: ethertype of filter
375 * @flag: direction of packet to be filtered, Tx or Rx
376 * @action: action to be performed on filter match
377 */
378enum ice_status ice_fltr_add_eth(struct ice_vsi *vsi, u16 ethertype, u16 flag,
379 enum ice_sw_fwd_act_type action)
380{
381 return ice_fltr_prepare_eth(vsi, ethertype, flag, action,
382 ice_fltr_add_eth_list);
383}
384
385/**
386 * ice_fltr_remove_eth - remove ethertype filter
387 * @vsi: pointer to VSI struct
388 * @ethertype: ethertype of filter
389 * @flag: direction of filter
390 * @action: action to remove
391 */
392enum ice_status ice_fltr_remove_eth(struct ice_vsi *vsi, u16 ethertype,
393 u16 flag, enum ice_sw_fwd_act_type action)
394{
395 return ice_fltr_prepare_eth(vsi, ethertype, flag, action,
396 ice_fltr_remove_eth_list);
397}