1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2021, Intel Corporation. */
4 #include "ice_virtchnl_allowlist.h"
6 /* Purpose of this file is to share functionality to allowlist or denylist
7 * opcodes used in PF <-> VF communication. Group of opcodes:
8 * - default -> should be always allowed after creating VF,
9 * default_allowlist_opcodes
10 * - opcodes needed by VF to work correctly, but not associated with caps ->
11 * should be allowed after successful VF resources allocation,
12 * working_allowlist_opcodes
13 * - opcodes needed by VF when caps are activated
15 * Caps that don't use new opcodes (no opcodes should be allowed):
16 * - VIRTCHNL_VF_OFFLOAD_RSS_AQ
17 * - VIRTCHNL_VF_OFFLOAD_RSS_REG
18 * - VIRTCHNL_VF_OFFLOAD_WB_ON_ITR
19 * - VIRTCHNL_VF_OFFLOAD_CRC
20 * - VIRTCHNL_VF_OFFLOAD_RX_POLLING
21 * - VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2
22 * - VIRTCHNL_VF_OFFLOAD_ENCAP
23 * - VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM
24 * - VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM
25 * - VIRTCHNL_VF_OFFLOAD_USO
28 /* default opcodes to communicate with VF */
29 static const u32 default_allowlist_opcodes[] = {
30 VIRTCHNL_OP_GET_VF_RESOURCES, VIRTCHNL_OP_VERSION, VIRTCHNL_OP_RESET_VF,
33 /* opcodes supported after successful VIRTCHNL_OP_GET_VF_RESOURCES */
34 static const u32 working_allowlist_opcodes[] = {
35 VIRTCHNL_OP_CONFIG_TX_QUEUE, VIRTCHNL_OP_CONFIG_RX_QUEUE,
36 VIRTCHNL_OP_CONFIG_VSI_QUEUES, VIRTCHNL_OP_CONFIG_IRQ_MAP,
37 VIRTCHNL_OP_ENABLE_QUEUES, VIRTCHNL_OP_DISABLE_QUEUES,
38 VIRTCHNL_OP_GET_STATS, VIRTCHNL_OP_EVENT,
41 /* VIRTCHNL_VF_OFFLOAD_L2 */
42 static const u32 l2_allowlist_opcodes[] = {
43 VIRTCHNL_OP_ADD_ETH_ADDR, VIRTCHNL_OP_DEL_ETH_ADDR,
44 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
47 /* VIRTCHNL_VF_OFFLOAD_REQ_QUEUES */
48 static const u32 req_queues_allowlist_opcodes[] = {
49 VIRTCHNL_OP_REQUEST_QUEUES,
52 /* VIRTCHNL_VF_OFFLOAD_VLAN */
53 static const u32 vlan_allowlist_opcodes[] = {
54 VIRTCHNL_OP_ADD_VLAN, VIRTCHNL_OP_DEL_VLAN,
55 VIRTCHNL_OP_ENABLE_VLAN_STRIPPING, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
58 /* VIRTCHNL_VF_OFFLOAD_RSS_PF */
59 static const u32 rss_pf_allowlist_opcodes[] = {
60 VIRTCHNL_OP_CONFIG_RSS_KEY, VIRTCHNL_OP_CONFIG_RSS_LUT,
61 VIRTCHNL_OP_GET_RSS_HENA_CAPS, VIRTCHNL_OP_SET_RSS_HENA,
64 /* VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF */
65 static const u32 adv_rss_pf_allowlist_opcodes[] = {
66 VIRTCHNL_OP_ADD_RSS_CFG, VIRTCHNL_OP_DEL_RSS_CFG,
69 /* VIRTCHNL_VF_OFFLOAD_FDIR_PF */
70 static const u32 fdir_pf_allowlist_opcodes[] = {
71 VIRTCHNL_OP_ADD_FDIR_FILTER, VIRTCHNL_OP_DEL_FDIR_FILTER,
74 struct allowlist_opcode_info {
79 #define BIT_INDEX(caps) (HWEIGHT((caps) - 1))
80 #define ALLOW_ITEM(caps, list) \
81 [BIT_INDEX(caps)] = { \
83 .size = ARRAY_SIZE(list) \
85 static const struct allowlist_opcode_info allowlist_opcodes[] = {
86 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_L2, l2_allowlist_opcodes),
87 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_REQ_QUEUES, req_queues_allowlist_opcodes),
88 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN, vlan_allowlist_opcodes),
89 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RSS_PF, rss_pf_allowlist_opcodes),
90 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF, adv_rss_pf_allowlist_opcodes),
91 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_FDIR_PF, fdir_pf_allowlist_opcodes),
95 * ice_vc_is_opcode_allowed - check if this opcode is allowed on this VF
96 * @vf: pointer to VF structure
97 * @opcode: virtchnl opcode
99 * Return true if message is allowed on this VF
101 bool ice_vc_is_opcode_allowed(struct ice_vf *vf, u32 opcode)
103 if (opcode >= VIRTCHNL_OP_MAX)
106 return test_bit(opcode, vf->opcodes_allowlist);
110 * ice_vc_allowlist_opcodes - allowlist selected opcodes
111 * @vf: pointer to VF structure
112 * @opcodes: array of opocodes to allowlist
113 * @size: size of opcodes array
115 * Function should be called to allowlist opcodes on VF.
118 ice_vc_allowlist_opcodes(struct ice_vf *vf, const u32 *opcodes, size_t size)
122 for (i = 0; i < size; i++)
123 set_bit(opcodes[i], vf->opcodes_allowlist);
127 * ice_vc_clear_allowlist - clear all allowlist opcodes
128 * @vf: pointer to VF structure
130 static void ice_vc_clear_allowlist(struct ice_vf *vf)
132 bitmap_zero(vf->opcodes_allowlist, VIRTCHNL_OP_MAX);
136 * ice_vc_set_default_allowlist - allowlist default opcodes for VF
137 * @vf: pointer to VF structure
139 void ice_vc_set_default_allowlist(struct ice_vf *vf)
141 ice_vc_clear_allowlist(vf);
142 ice_vc_allowlist_opcodes(vf, default_allowlist_opcodes,
143 ARRAY_SIZE(default_allowlist_opcodes));
147 * ice_vc_set_working_allowlist - allowlist opcodes needed to by VF to work
148 * @vf: pointer to VF structure
150 * allowlist opcodes that aren't associated with specific caps, but
151 * are needed by VF to work.
153 void ice_vc_set_working_allowlist(struct ice_vf *vf)
155 ice_vc_allowlist_opcodes(vf, working_allowlist_opcodes,
156 ARRAY_SIZE(working_allowlist_opcodes));
160 * ice_vc_set_caps_allowlist - allowlist VF opcodes according caps
161 * @vf: pointer to VF structure
163 void ice_vc_set_caps_allowlist(struct ice_vf *vf)
165 unsigned long caps = vf->driver_caps;
168 for_each_set_bit(i, &caps, ARRAY_SIZE(allowlist_opcodes))
169 ice_vc_allowlist_opcodes(vf, allowlist_opcodes[i].opcodes,
170 allowlist_opcodes[i].size);