Mukul Sharma | d75a667 | 2017-06-22 15:40:53 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017 The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for |
| 5 | * any purpose with or without fee is hereby granted, provided that the |
| 6 | * above copyright notice and this permission notice appear in all |
| 7 | * copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 10 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 11 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 12 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 13 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 14 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 15 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 16 | * PERFORMANCE OF THIS SOFTWARE. |
| 17 | */ |
| 18 | /** |
| 19 | * DOC: Implements public API for PMO GTK offload feature to interact |
| 20 | * with target/wmi. |
| 21 | */ |
| 22 | |
| 23 | #include "wlan_pmo_tgt_api.h" |
| 24 | #include "wlan_pmo_gtk_public_struct.h" |
| 25 | #include "wlan_pmo_obj_mgmt_public_struct.h" |
| 26 | #include "wlan_pmo_main.h" |
| 27 | |
| 28 | QDF_STATUS pmo_tgt_send_gtk_offload_req(struct wlan_objmgr_vdev *vdev, |
| 29 | struct pmo_gtk_req *gtk_req) |
| 30 | { |
| 31 | struct pmo_gtk_req *op_gtk_req = NULL; |
| 32 | QDF_STATUS status; |
| 33 | struct wlan_objmgr_psoc *psoc; |
| 34 | struct pmo_vdev_priv_obj *vdev_ctx; |
| 35 | struct wlan_pmo_tx_ops pmo_tx_ops; |
| 36 | |
| 37 | PMO_ENTER(); |
| 38 | psoc = wlan_vdev_get_psoc(vdev); |
| 39 | if (!psoc) { |
| 40 | pmo_err("Failed to find psoc from from vdev:%p", |
| 41 | vdev); |
| 42 | status = QDF_STATUS_E_INVAL; |
| 43 | goto out; |
| 44 | } |
| 45 | |
| 46 | vdev_ctx = pmo_vdev_get_priv(vdev); |
| 47 | |
| 48 | pmo_tx_ops = GET_PMO_TX_OPS_FROM_PSOC(psoc); |
| 49 | if (!pmo_tx_ops.send_gtk_offload_req) { |
| 50 | pmo_err("send_gtk_offload_req is null"); |
| 51 | status = QDF_STATUS_E_NULL_VALUE; |
| 52 | goto out; |
| 53 | } |
| 54 | |
| 55 | op_gtk_req = qdf_mem_malloc(sizeof(*op_gtk_req)); |
| 56 | if (!op_gtk_req) { |
| 57 | pmo_err("cannot allocate op_gtk_req "); |
| 58 | status = QDF_STATUS_E_NOMEM; |
| 59 | goto out; |
| 60 | } |
| 61 | |
| 62 | if (gtk_req->flags == PMO_GTK_OFFLOAD_ENABLE) { |
| 63 | qdf_atomic_set(&vdev_ctx->gtk_err_enable, true); |
| 64 | qdf_mem_copy(op_gtk_req->kck, gtk_req->kck, |
| 65 | PMO_KCK_LEN); |
| 66 | qdf_mem_copy(op_gtk_req->kek, gtk_req->kek, |
| 67 | PMO_KEK_LEN); |
| 68 | qdf_mem_copy(&op_gtk_req->replay_counter, |
| 69 | >k_req->replay_counter, PMO_REPLAY_COUNTER_LEN); |
| 70 | } else { |
| 71 | qdf_atomic_set(&vdev_ctx->gtk_err_enable, false); |
| 72 | } |
| 73 | |
| 74 | pmo_info("replay counter %llu", op_gtk_req->replay_counter); |
| 75 | op_gtk_req->flags = gtk_req->flags; |
| 76 | status = pmo_tx_ops.send_gtk_offload_req(vdev, op_gtk_req); |
| 77 | if (status != QDF_STATUS_SUCCESS) |
| 78 | pmo_err("Failed to send gtk offload req event"); |
| 79 | out: |
| 80 | if (op_gtk_req) |
| 81 | qdf_mem_free(op_gtk_req); |
| 82 | PMO_EXIT(); |
| 83 | |
| 84 | return status; |
| 85 | } |
| 86 | |
| 87 | QDF_STATUS pmo_tgt_get_gtk_rsp(struct wlan_objmgr_vdev *vdev) |
| 88 | { |
| 89 | |
| 90 | struct wlan_objmgr_psoc *psoc; |
| 91 | QDF_STATUS status; |
| 92 | struct wlan_pmo_tx_ops pmo_tx_ops; |
| 93 | |
| 94 | PMO_ENTER(); |
| 95 | psoc = wlan_vdev_get_psoc(vdev); |
| 96 | if (!psoc) { |
| 97 | pmo_err("Failed to find psoc from from vdev:%p", |
| 98 | vdev); |
| 99 | status = QDF_STATUS_E_NULL_VALUE; |
| 100 | goto out; |
| 101 | } |
| 102 | |
| 103 | pmo_tx_ops = GET_PMO_TX_OPS_FROM_PSOC(psoc); |
| 104 | if (!pmo_tx_ops.send_get_gtk_rsp_cmd) { |
| 105 | pmo_err("send_get_gtk_rsp_cmd is null"); |
| 106 | status = QDF_STATUS_E_NULL_VALUE; |
| 107 | goto out; |
| 108 | } |
| 109 | status = pmo_tx_ops.send_get_gtk_rsp_cmd(vdev); |
| 110 | if (status != QDF_STATUS_SUCCESS) |
| 111 | pmo_err("Failed to send_get_gtk_rsp_cmd event"); |
| 112 | out: |
| 113 | PMO_EXIT(); |
| 114 | |
| 115 | return status; |
| 116 | } |
| 117 | |
| 118 | QDF_STATUS pmo_tgt_gtk_rsp_evt(struct wlan_objmgr_psoc *psoc, |
| 119 | struct pmo_gtk_rsp_params *rsp_param) |
| 120 | { |
| 121 | QDF_STATUS status; |
| 122 | struct wlan_objmgr_vdev *vdev; |
| 123 | struct pmo_vdev_priv_obj *vdev_ctx; |
| 124 | |
| 125 | PMO_ENTER(); |
| 126 | if (!rsp_param) { |
| 127 | pmo_err("gtk rsp param is null"); |
| 128 | status = QDF_STATUS_E_NULL_VALUE; |
| 129 | goto out; |
| 130 | } |
| 131 | |
| 132 | vdev = pmo_psoc_get_vdev(psoc, rsp_param->vdev_id); |
| 133 | if (!vdev) { |
| 134 | pmo_err("vdev is null vdev_id:%d psoc:%p", |
| 135 | rsp_param->vdev_id, psoc); |
| 136 | status = QDF_STATUS_E_NULL_VALUE; |
| 137 | goto out; |
| 138 | } |
| 139 | |
| 140 | status = pmo_vdev_get_ref(vdev); |
| 141 | if (QDF_IS_STATUS_ERROR(status)) |
| 142 | goto out; |
| 143 | |
| 144 | vdev_ctx = pmo_vdev_get_priv(vdev); |
| 145 | |
| 146 | status = pmo_get_vdev_bss_peer_mac_addr(vdev, &rsp_param->bssid); |
| 147 | if (status != QDF_STATUS_SUCCESS) { |
| 148 | pmo_err("cannot find peer mac address"); |
| 149 | goto dec_ref; |
| 150 | } |
| 151 | |
| 152 | /* update cached replay counter */ |
| 153 | qdf_spin_lock_bh(&vdev_ctx->pmo_vdev_lock); |
| 154 | vdev_ctx->vdev_gtk_req.replay_counter = rsp_param->replay_counter; |
| 155 | qdf_spin_unlock_bh(&vdev_ctx->pmo_vdev_lock); |
| 156 | |
| 157 | if (vdev_ctx->vdev_gtk_rsp_req.callback) { |
| 158 | pmo_info("callback:%p context:%p psoc:%p vdev_id:%d", |
| 159 | vdev_ctx->vdev_gtk_rsp_req.callback, |
| 160 | vdev_ctx->vdev_gtk_rsp_req.callback_context, |
| 161 | psoc, rsp_param->vdev_id); |
| 162 | vdev_ctx->vdev_gtk_rsp_req.callback( |
| 163 | vdev_ctx->vdev_gtk_rsp_req.callback_context, |
| 164 | rsp_param); |
| 165 | } else { |
| 166 | pmo_err("gtk rsp callback is null for vdev_id:%d psoc %p", |
| 167 | rsp_param->vdev_id, |
| 168 | psoc); |
| 169 | } |
| 170 | |
| 171 | dec_ref: |
| 172 | pmo_vdev_put_ref(vdev); |
| 173 | out: |
| 174 | PMO_EXIT(); |
| 175 | |
| 176 | return status; |
| 177 | } |
| 178 | |