1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2019-2021, Intel Corporation. */
3
4 #include "ice_vsi_vlan_ops.h"
5 #include "ice_vsi_vlan_lib.h"
6 #include "ice_vlan_mode.h"
7 #include "ice.h"
8 #include "ice_vf_vsi_vlan_ops.h"
9 #include "ice_sriov.h"
10
11 static int
noop_vlan_arg(struct ice_vsi __always_unused * vsi,struct ice_vlan __always_unused * vlan)12 noop_vlan_arg(struct ice_vsi __always_unused *vsi,
13 struct ice_vlan __always_unused *vlan)
14 {
15 return 0;
16 }
17
18 static int
noop_vlan(struct ice_vsi __always_unused * vsi)19 noop_vlan(struct ice_vsi __always_unused *vsi)
20 {
21 return 0;
22 }
23
ice_port_vlan_on(struct ice_vsi * vsi)24 static void ice_port_vlan_on(struct ice_vsi *vsi)
25 {
26 struct ice_vsi_vlan_ops *vlan_ops;
27 struct ice_pf *pf = vsi->back;
28
29 /* setup inner VLAN ops */
30 vlan_ops = &vsi->inner_vlan_ops;
31
32 if (ice_is_dvm_ena(&pf->hw)) {
33 vlan_ops->add_vlan = noop_vlan_arg;
34 vlan_ops->del_vlan = noop_vlan_arg;
35 vlan_ops->ena_stripping = ice_vsi_ena_inner_stripping;
36 vlan_ops->dis_stripping = ice_vsi_dis_inner_stripping;
37 vlan_ops->ena_insertion = ice_vsi_ena_inner_insertion;
38 vlan_ops->dis_insertion = ice_vsi_dis_inner_insertion;
39
40 /* setup outer VLAN ops */
41 vlan_ops = &vsi->outer_vlan_ops;
42 vlan_ops->set_port_vlan = ice_vsi_set_outer_port_vlan;
43 vlan_ops->clear_port_vlan = ice_vsi_clear_outer_port_vlan;
44 } else {
45 vlan_ops->set_port_vlan = ice_vsi_set_inner_port_vlan;
46 vlan_ops->clear_port_vlan = ice_vsi_clear_inner_port_vlan;
47 }
48
49 /* all Rx traffic should be in the domain of the assigned port VLAN,
50 * so prevent disabling Rx VLAN filtering
51 */
52 vlan_ops->dis_rx_filtering = noop_vlan;
53
54 vlan_ops->ena_rx_filtering = ice_vsi_ena_rx_vlan_filtering;
55 }
56
ice_port_vlan_off(struct ice_vsi * vsi)57 static void ice_port_vlan_off(struct ice_vsi *vsi)
58 {
59 struct ice_vsi_vlan_ops *vlan_ops;
60 struct ice_pf *pf = vsi->back;
61
62 /* setup inner VLAN ops */
63 vlan_ops = &vsi->inner_vlan_ops;
64
65 vlan_ops->ena_stripping = ice_vsi_ena_inner_stripping;
66 vlan_ops->dis_stripping = ice_vsi_dis_inner_stripping;
67 vlan_ops->ena_insertion = ice_vsi_ena_inner_insertion;
68 vlan_ops->dis_insertion = ice_vsi_dis_inner_insertion;
69
70 if (ice_is_dvm_ena(&pf->hw)) {
71 vlan_ops = &vsi->outer_vlan_ops;
72
73 vlan_ops->del_vlan = ice_vsi_del_vlan;
74 vlan_ops->ena_stripping = ice_vsi_ena_outer_stripping;
75 vlan_ops->dis_stripping = ice_vsi_dis_outer_stripping;
76 vlan_ops->ena_insertion = ice_vsi_ena_outer_insertion;
77 vlan_ops->dis_insertion = ice_vsi_dis_outer_insertion;
78 } else {
79 vlan_ops->del_vlan = ice_vsi_del_vlan;
80 }
81
82 vlan_ops->dis_rx_filtering = ice_vsi_dis_rx_vlan_filtering;
83
84 if (!test_bit(ICE_FLAG_VF_VLAN_PRUNING, pf->flags))
85 vlan_ops->ena_rx_filtering = noop_vlan;
86 else
87 vlan_ops->ena_rx_filtering =
88 ice_vsi_ena_rx_vlan_filtering;
89 }
90
91 /**
92 * ice_vf_vsi_enable_port_vlan - Set VSI VLAN ops to support port VLAN
93 * @vsi: VF's VSI being configured
94 *
95 * The function won't create port VLAN, it only allows to create port VLAN
96 * using VLAN ops on the VF VSI.
97 */
ice_vf_vsi_enable_port_vlan(struct ice_vsi * vsi)98 void ice_vf_vsi_enable_port_vlan(struct ice_vsi *vsi)
99 {
100 if (WARN_ON_ONCE(!vsi->vf))
101 return;
102
103 ice_port_vlan_on(vsi);
104 }
105
106 /**
107 * ice_vf_vsi_disable_port_vlan - Clear VSI support for creating port VLAN
108 * @vsi: VF's VSI being configured
109 *
110 * The function should be called after removing port VLAN on VSI
111 * (using VLAN ops)
112 */
ice_vf_vsi_disable_port_vlan(struct ice_vsi * vsi)113 void ice_vf_vsi_disable_port_vlan(struct ice_vsi *vsi)
114 {
115 if (WARN_ON_ONCE(!vsi->vf))
116 return;
117
118 ice_port_vlan_off(vsi);
119 }
120
121 /**
122 * ice_vf_vsi_init_vlan_ops - Initialize default VSI VLAN ops for VF VSI
123 * @vsi: VF's VSI being configured
124 *
125 * If Double VLAN Mode (DVM) is enabled, assume that the VF supports the new
126 * VIRTCHNL_VF_VLAN_OFFLOAD_V2 capability and set up the VLAN ops accordingly.
127 * If SVM is enabled maintain the same level of VLAN support previous to
128 * VIRTCHNL_VF_VLAN_OFFLOAD_V2.
129 */
ice_vf_vsi_init_vlan_ops(struct ice_vsi * vsi)130 void ice_vf_vsi_init_vlan_ops(struct ice_vsi *vsi)
131 {
132 struct ice_vsi_vlan_ops *vlan_ops;
133 struct ice_pf *pf = vsi->back;
134 struct ice_vf *vf = vsi->vf;
135
136 if (WARN_ON(!vf))
137 return;
138
139 if (ice_vf_is_port_vlan_ena(vf))
140 ice_port_vlan_on(vsi);
141 else
142 ice_port_vlan_off(vsi);
143
144 vlan_ops = ice_is_dvm_ena(&pf->hw) ?
145 &vsi->outer_vlan_ops : &vsi->inner_vlan_ops;
146
147 vlan_ops->add_vlan = ice_vsi_add_vlan;
148 vlan_ops->ena_tx_filtering = ice_vsi_ena_tx_vlan_filtering;
149 vlan_ops->dis_tx_filtering = ice_vsi_dis_tx_vlan_filtering;
150 }
151
152 /**
153 * ice_vf_vsi_cfg_dvm_legacy_vlan_mode - Config VLAN mode for old VFs in DVM
154 * @vsi: VF's VSI being configured
155 *
156 * This should only be called when Double VLAN Mode (DVM) is enabled, there
157 * is not a port VLAN enabled on this VF, and the VF negotiates
158 * VIRTCHNL_VF_OFFLOAD_VLAN.
159 *
160 * This function sets up the VF VSI's inner and outer ice_vsi_vlan_ops and also
161 * initializes software only VLAN mode (i.e. allow all VLANs). Also, use no-op
162 * implementations for any functions that may be called during the lifetime of
163 * the VF so these methods do nothing and succeed.
164 */
ice_vf_vsi_cfg_dvm_legacy_vlan_mode(struct ice_vsi * vsi)165 void ice_vf_vsi_cfg_dvm_legacy_vlan_mode(struct ice_vsi *vsi)
166 {
167 struct ice_vsi_vlan_ops *vlan_ops;
168 struct ice_vf *vf = vsi->vf;
169 struct device *dev;
170
171 if (WARN_ON(!vf))
172 return;
173
174 dev = ice_pf_to_dev(vf->pf);
175
176 if (!ice_is_dvm_ena(&vsi->back->hw) || ice_vf_is_port_vlan_ena(vf))
177 return;
178
179 vlan_ops = &vsi->outer_vlan_ops;
180
181 /* Rx VLAN filtering always disabled to allow software offloaded VLANs
182 * for VFs that only support VIRTCHNL_VF_OFFLOAD_VLAN and don't have a
183 * port VLAN configured
184 */
185 vlan_ops->dis_rx_filtering = ice_vsi_dis_rx_vlan_filtering;
186 /* Don't fail when attempting to enable Rx VLAN filtering */
187 vlan_ops->ena_rx_filtering = noop_vlan;
188
189 /* Tx VLAN filtering always disabled to allow software offloaded VLANs
190 * for VFs that only support VIRTCHNL_VF_OFFLOAD_VLAN and don't have a
191 * port VLAN configured
192 */
193 vlan_ops->dis_tx_filtering = ice_vsi_dis_tx_vlan_filtering;
194 /* Don't fail when attempting to enable Tx VLAN filtering */
195 vlan_ops->ena_tx_filtering = noop_vlan;
196
197 if (vlan_ops->dis_rx_filtering(vsi))
198 dev_dbg(dev, "Failed to disable Rx VLAN filtering for old VF without VIRTCHNL_VF_OFFLOAD_VLAN_V2 support\n");
199 if (vlan_ops->dis_tx_filtering(vsi))
200 dev_dbg(dev, "Failed to disable Tx VLAN filtering for old VF without VIRTHCNL_VF_OFFLOAD_VLAN_V2 support\n");
201
202 /* All outer VLAN offloads must be disabled */
203 vlan_ops->dis_stripping = ice_vsi_dis_outer_stripping;
204 vlan_ops->dis_insertion = ice_vsi_dis_outer_insertion;
205
206 if (vlan_ops->dis_stripping(vsi))
207 dev_dbg(dev, "Failed to disable outer VLAN stripping for old VF without VIRTCHNL_VF_OFFLOAD_VLAN_V2 support\n");
208
209 if (vlan_ops->dis_insertion(vsi))
210 dev_dbg(dev, "Failed to disable outer VLAN insertion for old VF without VIRTCHNL_VF_OFFLOAD_VLAN_V2 support\n");
211
212 /* All inner VLAN offloads must be disabled */
213 vlan_ops = &vsi->inner_vlan_ops;
214
215 vlan_ops->dis_stripping = ice_vsi_dis_outer_stripping;
216 vlan_ops->dis_insertion = ice_vsi_dis_outer_insertion;
217
218 if (vlan_ops->dis_stripping(vsi))
219 dev_dbg(dev, "Failed to disable inner VLAN stripping for old VF without VIRTCHNL_VF_OFFLOAD_VLAN_V2 support\n");
220
221 if (vlan_ops->dis_insertion(vsi))
222 dev_dbg(dev, "Failed to disable inner VLAN insertion for old VF without VIRTCHNL_VF_OFFLOAD_VLAN_V2 support\n");
223 }
224
225 /**
226 * ice_vf_vsi_cfg_svm_legacy_vlan_mode - Config VLAN mode for old VFs in SVM
227 * @vsi: VF's VSI being configured
228 *
229 * This should only be called when Single VLAN Mode (SVM) is enabled, there is
230 * not a port VLAN enabled on this VF, and the VF negotiates
231 * VIRTCHNL_VF_OFFLOAD_VLAN.
232 *
233 * All of the normal SVM VLAN ops are identical for this case. However, by
234 * default Rx VLAN filtering should be turned off by default in this case.
235 */
ice_vf_vsi_cfg_svm_legacy_vlan_mode(struct ice_vsi * vsi)236 void ice_vf_vsi_cfg_svm_legacy_vlan_mode(struct ice_vsi *vsi)
237 {
238 struct ice_vf *vf = vsi->vf;
239
240 if (WARN_ON(!vf))
241 return;
242
243 if (ice_is_dvm_ena(&vsi->back->hw) || ice_vf_is_port_vlan_ena(vf))
244 return;
245
246 if (vsi->inner_vlan_ops.dis_rx_filtering(vsi))
247 dev_dbg(ice_pf_to_dev(vf->pf), "Failed to disable Rx VLAN filtering for old VF with VIRTCHNL_VF_OFFLOAD_VLAN support\n");
248 }
249