Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved. |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/debugfs.h> |
| 14 | #include <linux/export.h> |
| 15 | #include <linux/fs.h> |
| 16 | #include <linux/if_ether.h> |
| 17 | #include <linux/ioctl.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/msm_ipa.h> |
| 21 | #include <linux/mutex.h> |
| 22 | #include <linux/skbuff.h> |
| 23 | #include <linux/types.h> |
| 24 | #include <linux/ipv6.h> |
| 25 | #include <net/addrconf.h> |
| 26 | #include <linux/ipa.h> |
| 27 | #include <linux/cdev.h> |
| 28 | #include <linux/ipa_odu_bridge.h> |
| 29 | #include "../ipa_common_i.h" |
Mohammed Javid | 4c4037e | 2017-11-27 16:23:35 +0530 | [diff] [blame] | 30 | #ifdef CONFIG_IPA3 |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 31 | #include "../ipa_v3/ipa_pm.h" |
Mohammed Javid | 4c4037e | 2017-11-27 16:23:35 +0530 | [diff] [blame] | 32 | #endif |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 33 | |
| 34 | #define ODU_BRIDGE_DRV_NAME "odu_ipa_bridge" |
| 35 | |
| 36 | #define ODU_BRIDGE_DBG(fmt, args...) \ |
| 37 | do { \ |
| 38 | pr_debug(ODU_BRIDGE_DRV_NAME " %s:%d " fmt, \ |
| 39 | __func__, __LINE__, ## args); \ |
| 40 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf(), \ |
| 41 | ODU_BRIDGE_DRV_NAME " %s:%d " fmt, ## args); \ |
| 42 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 43 | ODU_BRIDGE_DRV_NAME " %s:%d " fmt, ## args); \ |
| 44 | } while (0) |
| 45 | #define ODU_BRIDGE_DBG_LOW(fmt, args...) \ |
| 46 | do { \ |
| 47 | pr_debug(ODU_BRIDGE_DRV_NAME " %s:%d " fmt, \ |
| 48 | __func__, __LINE__, ## args); \ |
| 49 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 50 | ODU_BRIDGE_DRV_NAME " %s:%d " fmt, ## args); \ |
| 51 | } while (0) |
| 52 | #define ODU_BRIDGE_ERR(fmt, args...) \ |
| 53 | do { \ |
| 54 | pr_err(ODU_BRIDGE_DRV_NAME " %s:%d " fmt, \ |
| 55 | __func__, __LINE__, ## args); \ |
| 56 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf(), \ |
| 57 | ODU_BRIDGE_DRV_NAME " %s:%d " fmt, ## args); \ |
| 58 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 59 | ODU_BRIDGE_DRV_NAME " %s:%d " fmt, ## args); \ |
| 60 | } while (0) |
| 61 | |
| 62 | #define ODU_BRIDGE_FUNC_ENTRY() \ |
| 63 | ODU_BRIDGE_DBG_LOW("ENTRY\n") |
| 64 | #define ODU_BRIDGE_FUNC_EXIT() \ |
| 65 | ODU_BRIDGE_DBG_LOW("EXIT\n") |
| 66 | |
| 67 | |
| 68 | #define ODU_BRIDGE_IS_QMI_ADDR(daddr) \ |
| 69 | (memcmp(&(daddr), &odu_bridge_ctx->llv6_addr, sizeof((daddr))) \ |
| 70 | == 0) |
| 71 | |
| 72 | #define ODU_BRIDGE_IPV4_HDR_NAME "odu_br_ipv4" |
| 73 | #define ODU_BRIDGE_IPV6_HDR_NAME "odu_br_ipv6" |
| 74 | |
| 75 | #define IPA_ODU_SYS_DESC_FIFO_SZ 0x800 |
| 76 | |
| 77 | #ifdef CONFIG_COMPAT |
| 78 | #define ODU_BRIDGE_IOC_SET_LLV6_ADDR32 _IOW(ODU_BRIDGE_IOC_MAGIC, \ |
| 79 | ODU_BRIDGE_IOCTL_SET_LLV6_ADDR, \ |
| 80 | compat_uptr_t) |
| 81 | #endif |
| 82 | |
| 83 | #define IPA_ODU_VER_CHECK() \ |
| 84 | do { \ |
| 85 | ret = 0;\ |
| 86 | if (ipa_get_hw_type() == IPA_HW_None) { \ |
| 87 | pr_err("IPA HW is unknown\n"); \ |
| 88 | ret = -EFAULT; \ |
| 89 | } \ |
| 90 | else if (ipa_get_hw_type() < IPA_HW_v3_0) \ |
| 91 | ret = 1; \ |
| 92 | } while (0) |
| 93 | |
| 94 | /** |
| 95 | * struct stats - driver statistics, viewable using debugfs |
| 96 | * @num_ul_packets: number of packets bridged in uplink direction |
| 97 | * @num_dl_packets: number of packets bridged in downink direction |
| 98 | * bridge |
| 99 | * @num_lan_packets: number of packets bridged to APPS on bridge mode |
| 100 | */ |
| 101 | struct stats { |
| 102 | u64 num_ul_packets; |
| 103 | u64 num_dl_packets; |
| 104 | u64 num_lan_packets; |
| 105 | }; |
| 106 | |
| 107 | /** |
| 108 | * struct odu_bridge_ctx - ODU bridge driver context information |
| 109 | * @class: kernel class pointer |
| 110 | * @dev_num: kernel device number |
| 111 | * @dev: kernel device struct pointer |
| 112 | * @cdev: kernel character device struct |
| 113 | * @netdev_name: network interface name |
| 114 | * @device_ethaddr: network interface ethernet address |
| 115 | * @priv: client's private data. to be used in client's callbacks |
| 116 | * @tx_dp_notify: client callback for handling IPA ODU_PROD callback |
| 117 | * @send_dl_skb: client callback for sending skb in downlink direction |
| 118 | * @stats: statistics, how many packets were transmitted using the SW bridge |
| 119 | * @is_conencted: is bridge connected ? |
Skylar Chang | 9fbce06 | 2017-07-25 16:20:42 -0700 | [diff] [blame] | 120 | * @is_suspended: is bridge suspended ? |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 121 | * @mode: ODU mode (router/bridge) |
| 122 | * @lock: for the initialization, connect and disconnect synchronization |
| 123 | * @llv6_addr: link local IPv6 address of ODU network interface |
| 124 | * @odu_br_ipv4_hdr_hdl: handle for partial ipv4 ethernet header |
| 125 | * @odu_br_ipv6_hdr_hdl: handle for partial ipv6 ethernet header |
| 126 | * @odu_prod_hdl: handle for IPA_CLIENT_ODU_PROD pipe |
| 127 | * @odu_emb_cons_hdl: handle for IPA_CLIENT_ODU_EMB_CONS pipe |
| 128 | * @odu_teth_cons_hdl: handle for IPA_CLIENT_ODU_TETH_CONS pipe |
Skylar Chang | 9fbce06 | 2017-07-25 16:20:42 -0700 | [diff] [blame] | 129 | * @rm_comp: completion object for IP RM |
| 130 | * @wakeup_request: client callback to wakeup |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 131 | */ |
| 132 | struct odu_bridge_ctx { |
| 133 | struct class *class; |
| 134 | dev_t dev_num; |
| 135 | struct device *dev; |
| 136 | struct cdev cdev; |
| 137 | char netdev_name[IPA_RESOURCE_NAME_MAX]; |
| 138 | u8 device_ethaddr[ETH_ALEN]; |
| 139 | void *priv; |
| 140 | ipa_notify_cb tx_dp_notify; |
| 141 | int (*send_dl_skb)(void *priv, struct sk_buff *skb); |
| 142 | struct stats stats; |
| 143 | bool is_connected; |
Skylar Chang | 9fbce06 | 2017-07-25 16:20:42 -0700 | [diff] [blame] | 144 | bool is_suspended; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 145 | enum odu_bridge_mode mode; |
| 146 | struct mutex lock; |
| 147 | struct in6_addr llv6_addr; |
| 148 | uint32_t odu_br_ipv4_hdr_hdl; |
| 149 | uint32_t odu_br_ipv6_hdr_hdl; |
| 150 | u32 odu_prod_hdl; |
| 151 | u32 odu_emb_cons_hdl; |
| 152 | u32 odu_teth_cons_hdl; |
| 153 | u32 ipa_sys_desc_size; |
| 154 | void *logbuf; |
| 155 | void *logbuf_low; |
Skylar Chang | 9fbce06 | 2017-07-25 16:20:42 -0700 | [diff] [blame] | 156 | struct completion rm_comp; |
| 157 | void (*wakeup_request)(void *); |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 158 | u32 pm_hdl; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 159 | }; |
| 160 | static struct odu_bridge_ctx *odu_bridge_ctx; |
| 161 | |
| 162 | #ifdef CONFIG_DEBUG_FS |
| 163 | #define ODU_MAX_MSG_LEN 512 |
| 164 | static char dbg_buff[ODU_MAX_MSG_LEN]; |
| 165 | #endif |
| 166 | |
| 167 | static void odu_bridge_emb_cons_cb(void *priv, enum ipa_dp_evt_type evt, |
| 168 | unsigned long data) |
| 169 | { |
| 170 | ODU_BRIDGE_FUNC_ENTRY(); |
| 171 | if (evt != IPA_RECEIVE) { |
| 172 | ODU_BRIDGE_ERR("unexpected event\n"); |
| 173 | WARN_ON(1); |
| 174 | return; |
| 175 | } |
| 176 | odu_bridge_ctx->send_dl_skb(priv, (struct sk_buff *)data); |
| 177 | odu_bridge_ctx->stats.num_dl_packets++; |
| 178 | ODU_BRIDGE_FUNC_EXIT(); |
| 179 | } |
| 180 | |
| 181 | static void odu_bridge_teth_cons_cb(void *priv, enum ipa_dp_evt_type evt, |
| 182 | unsigned long data) |
| 183 | { |
| 184 | struct ipv6hdr *ipv6hdr; |
| 185 | struct sk_buff *skb = (struct sk_buff *)data; |
| 186 | struct sk_buff *skb_copied; |
| 187 | |
| 188 | ODU_BRIDGE_FUNC_ENTRY(); |
| 189 | if (evt != IPA_RECEIVE) { |
| 190 | ODU_BRIDGE_ERR("unexpected event\n"); |
| 191 | WARN_ON(1); |
| 192 | return; |
| 193 | } |
| 194 | |
| 195 | ipv6hdr = (struct ipv6hdr *)(skb->data + ETH_HLEN); |
| 196 | if (ipv6hdr->version == 6 && |
| 197 | ipv6_addr_is_multicast(&ipv6hdr->daddr)) { |
| 198 | ODU_BRIDGE_DBG_LOW("Multicast pkt, send to APPS and adapter\n"); |
| 199 | skb_copied = skb_clone(skb, GFP_KERNEL); |
| 200 | if (skb_copied) { |
| 201 | odu_bridge_ctx->tx_dp_notify(odu_bridge_ctx->priv, |
| 202 | IPA_RECEIVE, |
| 203 | (unsigned long) skb_copied); |
| 204 | odu_bridge_ctx->stats.num_lan_packets++; |
| 205 | } else { |
| 206 | ODU_BRIDGE_ERR("No memory\n"); |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | odu_bridge_ctx->send_dl_skb(priv, skb); |
| 211 | odu_bridge_ctx->stats.num_dl_packets++; |
| 212 | ODU_BRIDGE_FUNC_EXIT(); |
| 213 | } |
| 214 | |
| 215 | static int odu_bridge_connect_router(void) |
| 216 | { |
| 217 | struct ipa_sys_connect_params odu_prod_params; |
| 218 | struct ipa_sys_connect_params odu_emb_cons_params; |
| 219 | int res; |
| 220 | |
| 221 | ODU_BRIDGE_FUNC_ENTRY(); |
| 222 | |
| 223 | memset(&odu_prod_params, 0, sizeof(odu_prod_params)); |
| 224 | memset(&odu_emb_cons_params, 0, sizeof(odu_emb_cons_params)); |
| 225 | |
| 226 | /* configure RX (ODU->IPA) EP */ |
| 227 | odu_prod_params.client = IPA_CLIENT_ODU_PROD; |
| 228 | odu_prod_params.ipa_ep_cfg.hdr.hdr_len = ETH_HLEN; |
| 229 | odu_prod_params.ipa_ep_cfg.nat.nat_en = IPA_SRC_NAT; |
| 230 | odu_prod_params.desc_fifo_sz = odu_bridge_ctx->ipa_sys_desc_size; |
| 231 | odu_prod_params.priv = odu_bridge_ctx->priv; |
| 232 | odu_prod_params.notify = odu_bridge_ctx->tx_dp_notify; |
| 233 | res = ipa_setup_sys_pipe(&odu_prod_params, |
| 234 | &odu_bridge_ctx->odu_prod_hdl); |
| 235 | if (res) { |
| 236 | ODU_BRIDGE_ERR("fail to setup sys pipe ODU_PROD %d\n", res); |
| 237 | goto fail_odu_prod; |
| 238 | } |
| 239 | |
| 240 | /* configure TX (IPA->ODU) EP */ |
| 241 | odu_emb_cons_params.client = IPA_CLIENT_ODU_EMB_CONS; |
| 242 | odu_emb_cons_params.ipa_ep_cfg.hdr.hdr_len = ETH_HLEN; |
| 243 | odu_emb_cons_params.ipa_ep_cfg.nat.nat_en = IPA_BYPASS_NAT; |
| 244 | odu_emb_cons_params.desc_fifo_sz = odu_bridge_ctx->ipa_sys_desc_size; |
| 245 | odu_emb_cons_params.priv = odu_bridge_ctx->priv; |
| 246 | odu_emb_cons_params.notify = odu_bridge_emb_cons_cb; |
| 247 | res = ipa_setup_sys_pipe(&odu_emb_cons_params, |
| 248 | &odu_bridge_ctx->odu_emb_cons_hdl); |
| 249 | if (res) { |
| 250 | ODU_BRIDGE_ERR("fail to setup sys pipe ODU_EMB_CONS %d\n", res); |
| 251 | goto fail_odu_emb_cons; |
| 252 | } |
| 253 | |
| 254 | ODU_BRIDGE_DBG("odu_prod_hdl = %d, odu_emb_cons_hdl = %d\n", |
| 255 | odu_bridge_ctx->odu_prod_hdl, odu_bridge_ctx->odu_emb_cons_hdl); |
| 256 | |
| 257 | ODU_BRIDGE_FUNC_EXIT(); |
| 258 | |
| 259 | return 0; |
| 260 | |
| 261 | fail_odu_emb_cons: |
| 262 | ipa_teardown_sys_pipe(odu_bridge_ctx->odu_prod_hdl); |
| 263 | odu_bridge_ctx->odu_prod_hdl = 0; |
| 264 | fail_odu_prod: |
| 265 | return res; |
| 266 | } |
| 267 | |
| 268 | static int odu_bridge_connect_bridge(void) |
| 269 | { |
| 270 | struct ipa_sys_connect_params odu_prod_params; |
| 271 | struct ipa_sys_connect_params odu_emb_cons_params; |
| 272 | struct ipa_sys_connect_params odu_teth_cons_params; |
| 273 | int res; |
| 274 | |
| 275 | ODU_BRIDGE_FUNC_ENTRY(); |
| 276 | |
| 277 | memset(&odu_prod_params, 0, sizeof(odu_prod_params)); |
| 278 | memset(&odu_emb_cons_params, 0, sizeof(odu_emb_cons_params)); |
| 279 | |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 280 | if (!ipa_pm_is_used()) { |
| 281 | /* Build IPA Resource manager dependency graph */ |
| 282 | ODU_BRIDGE_DBG_LOW("build dependency graph\n"); |
| 283 | res = ipa_rm_add_dependency(IPA_RM_RESOURCE_ODU_ADAPT_PROD, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 284 | IPA_RM_RESOURCE_Q6_CONS); |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 285 | if (res && res != -EINPROGRESS) { |
| 286 | ODU_BRIDGE_ERR("ipa_rm_add_dependency() failed\n"); |
| 287 | goto fail_add_dependency_1; |
| 288 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 289 | |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 290 | res = ipa_rm_add_dependency(IPA_RM_RESOURCE_Q6_PROD, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 291 | IPA_RM_RESOURCE_ODU_ADAPT_CONS); |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 292 | if (res && res != -EINPROGRESS) { |
| 293 | ODU_BRIDGE_ERR("ipa_rm_add_dependency() failed\n"); |
| 294 | goto fail_add_dependency_2; |
| 295 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | /* configure RX (ODU->IPA) EP */ |
| 299 | odu_prod_params.client = IPA_CLIENT_ODU_PROD; |
| 300 | odu_prod_params.desc_fifo_sz = IPA_ODU_SYS_DESC_FIFO_SZ; |
| 301 | odu_prod_params.priv = odu_bridge_ctx->priv; |
| 302 | odu_prod_params.notify = odu_bridge_ctx->tx_dp_notify; |
| 303 | odu_prod_params.skip_ep_cfg = true; |
| 304 | res = ipa_setup_sys_pipe(&odu_prod_params, |
| 305 | &odu_bridge_ctx->odu_prod_hdl); |
| 306 | if (res) { |
| 307 | ODU_BRIDGE_ERR("fail to setup sys pipe ODU_PROD %d\n", res); |
| 308 | goto fail_odu_prod; |
| 309 | } |
| 310 | |
| 311 | /* configure TX tethered (IPA->ODU) EP */ |
| 312 | odu_teth_cons_params.client = IPA_CLIENT_ODU_TETH_CONS; |
| 313 | odu_teth_cons_params.desc_fifo_sz = IPA_ODU_SYS_DESC_FIFO_SZ; |
| 314 | odu_teth_cons_params.priv = odu_bridge_ctx->priv; |
| 315 | odu_teth_cons_params.notify = odu_bridge_teth_cons_cb; |
| 316 | odu_teth_cons_params.skip_ep_cfg = true; |
| 317 | res = ipa_setup_sys_pipe(&odu_teth_cons_params, |
| 318 | &odu_bridge_ctx->odu_teth_cons_hdl); |
| 319 | if (res) { |
| 320 | ODU_BRIDGE_ERR("fail to setup sys pipe ODU_TETH_CONS %d\n", |
| 321 | res); |
| 322 | goto fail_odu_teth_cons; |
| 323 | } |
| 324 | |
| 325 | /* configure TX embedded(IPA->ODU) EP */ |
| 326 | odu_emb_cons_params.client = IPA_CLIENT_ODU_EMB_CONS; |
| 327 | odu_emb_cons_params.ipa_ep_cfg.hdr.hdr_len = ETH_HLEN; |
| 328 | odu_emb_cons_params.ipa_ep_cfg.nat.nat_en = IPA_BYPASS_NAT; |
| 329 | odu_emb_cons_params.desc_fifo_sz = IPA_ODU_SYS_DESC_FIFO_SZ; |
| 330 | odu_emb_cons_params.priv = odu_bridge_ctx->priv; |
| 331 | odu_emb_cons_params.notify = odu_bridge_emb_cons_cb; |
| 332 | res = ipa_setup_sys_pipe(&odu_emb_cons_params, |
| 333 | &odu_bridge_ctx->odu_emb_cons_hdl); |
| 334 | if (res) { |
| 335 | ODU_BRIDGE_ERR("fail to setup sys pipe ODU_EMB_CONS %d\n", res); |
| 336 | goto fail_odu_emb_cons; |
| 337 | } |
| 338 | |
| 339 | ODU_BRIDGE_DBG_LOW("odu_prod_hdl = %d, odu_emb_cons_hdl = %d\n", |
| 340 | odu_bridge_ctx->odu_prod_hdl, odu_bridge_ctx->odu_emb_cons_hdl); |
| 341 | ODU_BRIDGE_DBG_LOW("odu_teth_cons_hdl = %d\n", |
| 342 | odu_bridge_ctx->odu_teth_cons_hdl); |
| 343 | |
| 344 | ODU_BRIDGE_FUNC_EXIT(); |
| 345 | |
| 346 | return 0; |
| 347 | |
| 348 | fail_odu_emb_cons: |
| 349 | ipa_teardown_sys_pipe(odu_bridge_ctx->odu_teth_cons_hdl); |
| 350 | odu_bridge_ctx->odu_teth_cons_hdl = 0; |
| 351 | fail_odu_teth_cons: |
| 352 | ipa_teardown_sys_pipe(odu_bridge_ctx->odu_prod_hdl); |
| 353 | odu_bridge_ctx->odu_prod_hdl = 0; |
| 354 | fail_odu_prod: |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 355 | if (!ipa_pm_is_used()) |
| 356 | ipa_rm_delete_dependency(IPA_RM_RESOURCE_Q6_PROD, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 357 | IPA_RM_RESOURCE_ODU_ADAPT_CONS); |
| 358 | fail_add_dependency_2: |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 359 | if (!ipa_pm_is_used()) |
| 360 | ipa_rm_delete_dependency(IPA_RM_RESOURCE_ODU_ADAPT_PROD, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 361 | IPA_RM_RESOURCE_Q6_CONS); |
| 362 | fail_add_dependency_1: |
| 363 | return res; |
| 364 | } |
| 365 | |
| 366 | static int odu_bridge_disconnect_router(void) |
| 367 | { |
| 368 | int res; |
| 369 | |
| 370 | ODU_BRIDGE_FUNC_ENTRY(); |
| 371 | |
| 372 | res = ipa_teardown_sys_pipe(odu_bridge_ctx->odu_prod_hdl); |
| 373 | if (res) |
| 374 | ODU_BRIDGE_ERR("teardown ODU PROD failed\n"); |
| 375 | odu_bridge_ctx->odu_prod_hdl = 0; |
| 376 | |
| 377 | res = ipa_teardown_sys_pipe(odu_bridge_ctx->odu_emb_cons_hdl); |
| 378 | if (res) |
| 379 | ODU_BRIDGE_ERR("teardown ODU EMB CONS failed\n"); |
| 380 | odu_bridge_ctx->odu_emb_cons_hdl = 0; |
| 381 | |
| 382 | ODU_BRIDGE_FUNC_EXIT(); |
| 383 | |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | static int odu_bridge_disconnect_bridge(void) |
| 388 | { |
| 389 | int res; |
| 390 | |
| 391 | ODU_BRIDGE_FUNC_ENTRY(); |
| 392 | |
| 393 | res = ipa_teardown_sys_pipe(odu_bridge_ctx->odu_prod_hdl); |
| 394 | if (res) |
| 395 | ODU_BRIDGE_ERR("teardown ODU PROD failed\n"); |
| 396 | odu_bridge_ctx->odu_prod_hdl = 0; |
| 397 | |
| 398 | res = ipa_teardown_sys_pipe(odu_bridge_ctx->odu_teth_cons_hdl); |
| 399 | if (res) |
| 400 | ODU_BRIDGE_ERR("teardown ODU TETH CONS failed\n"); |
| 401 | odu_bridge_ctx->odu_teth_cons_hdl = 0; |
| 402 | |
| 403 | res = ipa_teardown_sys_pipe(odu_bridge_ctx->odu_emb_cons_hdl); |
| 404 | if (res) |
| 405 | ODU_BRIDGE_ERR("teardown ODU EMB CONS failed\n"); |
| 406 | odu_bridge_ctx->odu_emb_cons_hdl = 0; |
| 407 | |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 408 | if (!ipa_pm_is_used()) { |
| 409 | /* Delete IPA Resource manager dependency graph */ |
| 410 | ODU_BRIDGE_DBG("deleting dependency graph\n"); |
| 411 | res = ipa_rm_delete_dependency(IPA_RM_RESOURCE_ODU_ADAPT_PROD, |
| 412 | IPA_RM_RESOURCE_Q6_CONS); |
| 413 | if (res && res != -EINPROGRESS) |
| 414 | ODU_BRIDGE_ERR("ipa_rm_delete_dependency() failed\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 415 | |
Michael Adisumarta | 3e35081 | 2017-09-18 14:54:36 -0700 | [diff] [blame] | 416 | res = ipa_rm_delete_dependency(IPA_RM_RESOURCE_Q6_PROD, |
| 417 | IPA_RM_RESOURCE_ODU_ADAPT_CONS); |
| 418 | if (res && res != -EINPROGRESS) |
| 419 | ODU_BRIDGE_ERR("ipa_rm_delete_dependency() failed\n"); |
| 420 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 421 | |
| 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | /** |
| 426 | * odu_bridge_disconnect() - Disconnect odu bridge |
| 427 | * |
| 428 | * Disconnect all pipes and deletes IPA RM dependencies on bridge mode |
| 429 | * |
| 430 | * Return codes: 0- success, error otherwise |
| 431 | */ |
| 432 | int odu_bridge_disconnect(void) |
| 433 | { |
| 434 | int res; |
| 435 | |
| 436 | ODU_BRIDGE_FUNC_ENTRY(); |
| 437 | |
| 438 | if (!odu_bridge_ctx) { |
| 439 | ODU_BRIDGE_ERR("Not initialized\n"); |
| 440 | return -EFAULT; |
| 441 | } |
| 442 | |
| 443 | if (!odu_bridge_ctx->is_connected) { |
| 444 | ODU_BRIDGE_ERR("Not connected\n"); |
| 445 | return -EFAULT; |
| 446 | } |
| 447 | |
| 448 | mutex_lock(&odu_bridge_ctx->lock); |
| 449 | if (odu_bridge_ctx->mode == ODU_BRIDGE_MODE_ROUTER) { |
| 450 | res = odu_bridge_disconnect_router(); |
| 451 | if (res) { |
| 452 | ODU_BRIDGE_ERR("disconnect_router failed %d\n", res); |
| 453 | goto out; |
| 454 | } |
| 455 | } else { |
| 456 | res = odu_bridge_disconnect_bridge(); |
| 457 | if (res) { |
| 458 | ODU_BRIDGE_ERR("disconnect_bridge failed %d\n", res); |
| 459 | goto out; |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | odu_bridge_ctx->is_connected = false; |
| 464 | res = 0; |
| 465 | out: |
| 466 | mutex_unlock(&odu_bridge_ctx->lock); |
| 467 | ODU_BRIDGE_FUNC_EXIT(); |
| 468 | return res; |
| 469 | } |
| 470 | EXPORT_SYMBOL(odu_bridge_disconnect); |
| 471 | |
| 472 | /** |
| 473 | * odu_bridge_connect() - Connect odu bridge. |
| 474 | * |
| 475 | * Call to the mode-specific connect function for connection IPA pipes |
| 476 | * and adding IPA RM dependencies |
| 477 | |
| 478 | * Return codes: 0: success |
| 479 | * -EINVAL: invalid parameters |
| 480 | * -EPERM: Operation not permitted as the bridge is already |
| 481 | * connected |
| 482 | */ |
| 483 | int odu_bridge_connect(void) |
| 484 | { |
| 485 | int res; |
| 486 | |
| 487 | ODU_BRIDGE_FUNC_ENTRY(); |
| 488 | |
| 489 | if (!odu_bridge_ctx) { |
| 490 | ODU_BRIDGE_ERR("Not initialized\n"); |
| 491 | return -EFAULT; |
| 492 | } |
| 493 | |
| 494 | if (odu_bridge_ctx->is_connected) { |
| 495 | ODU_BRIDGE_ERR("already connected\n"); |
| 496 | return -EFAULT; |
| 497 | } |
| 498 | |
| 499 | mutex_lock(&odu_bridge_ctx->lock); |
| 500 | if (odu_bridge_ctx->mode == ODU_BRIDGE_MODE_ROUTER) { |
| 501 | res = odu_bridge_connect_router(); |
| 502 | if (res) { |
| 503 | ODU_BRIDGE_ERR("connect_router failed\n"); |
| 504 | goto bail; |
| 505 | } |
| 506 | } else { |
| 507 | res = odu_bridge_connect_bridge(); |
| 508 | if (res) { |
| 509 | ODU_BRIDGE_ERR("connect_bridge failed\n"); |
| 510 | goto bail; |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | odu_bridge_ctx->is_connected = true; |
| 515 | res = 0; |
| 516 | bail: |
| 517 | mutex_unlock(&odu_bridge_ctx->lock); |
| 518 | ODU_BRIDGE_FUNC_EXIT(); |
| 519 | return res; |
| 520 | } |
| 521 | EXPORT_SYMBOL(odu_bridge_connect); |
| 522 | |
| 523 | /** |
| 524 | * odu_bridge_set_mode() - Set bridge mode to Router/Bridge |
| 525 | * @mode: mode to be set |
| 526 | */ |
| 527 | static int odu_bridge_set_mode(enum odu_bridge_mode mode) |
| 528 | { |
| 529 | int res; |
| 530 | |
| 531 | ODU_BRIDGE_FUNC_ENTRY(); |
| 532 | |
| 533 | if (mode < 0 || mode >= ODU_BRIDGE_MODE_MAX) { |
| 534 | ODU_BRIDGE_ERR("Unsupported mode: %d\n", mode); |
| 535 | return -EFAULT; |
| 536 | } |
| 537 | |
| 538 | ODU_BRIDGE_DBG_LOW("setting mode: %d\n", mode); |
| 539 | mutex_lock(&odu_bridge_ctx->lock); |
| 540 | |
| 541 | if (odu_bridge_ctx->mode == mode) { |
| 542 | ODU_BRIDGE_DBG_LOW("same mode\n"); |
| 543 | res = 0; |
| 544 | goto bail; |
| 545 | } |
| 546 | |
| 547 | if (odu_bridge_ctx->is_connected) { |
| 548 | /* first disconnect the old configuration */ |
| 549 | if (odu_bridge_ctx->mode == ODU_BRIDGE_MODE_ROUTER) { |
| 550 | res = odu_bridge_disconnect_router(); |
| 551 | if (res) { |
| 552 | ODU_BRIDGE_ERR("disconnect_router failed\n"); |
| 553 | goto bail; |
| 554 | } |
| 555 | } else { |
| 556 | res = odu_bridge_disconnect_bridge(); |
| 557 | if (res) { |
| 558 | ODU_BRIDGE_ERR("disconnect_bridge failed\n"); |
| 559 | goto bail; |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | /* connect the new configuration */ |
| 564 | if (mode == ODU_BRIDGE_MODE_ROUTER) { |
| 565 | res = odu_bridge_connect_router(); |
| 566 | if (res) { |
| 567 | ODU_BRIDGE_ERR("connect_router failed\n"); |
| 568 | goto bail; |
| 569 | } |
| 570 | } else { |
| 571 | res = odu_bridge_connect_bridge(); |
| 572 | if (res) { |
| 573 | ODU_BRIDGE_ERR("connect_bridge failed\n"); |
| 574 | goto bail; |
| 575 | } |
| 576 | } |
| 577 | } |
| 578 | odu_bridge_ctx->mode = mode; |
| 579 | res = 0; |
| 580 | bail: |
| 581 | mutex_unlock(&odu_bridge_ctx->lock); |
| 582 | ODU_BRIDGE_FUNC_EXIT(); |
| 583 | return res; |
| 584 | }; |
| 585 | |
| 586 | /** |
| 587 | * odu_bridge_set_llv6_addr() - Set link local ipv6 address |
| 588 | * @llv6_addr: odu network interface link local address |
| 589 | * |
| 590 | * This function sets the link local ipv6 address provided by IOCTL |
| 591 | */ |
| 592 | static int odu_bridge_set_llv6_addr(struct in6_addr *llv6_addr) |
| 593 | { |
| 594 | struct in6_addr llv6_addr_host; |
| 595 | |
| 596 | ODU_BRIDGE_FUNC_ENTRY(); |
| 597 | |
| 598 | llv6_addr_host.s6_addr32[0] = ntohl(llv6_addr->s6_addr32[0]); |
| 599 | llv6_addr_host.s6_addr32[1] = ntohl(llv6_addr->s6_addr32[1]); |
| 600 | llv6_addr_host.s6_addr32[2] = ntohl(llv6_addr->s6_addr32[2]); |
| 601 | llv6_addr_host.s6_addr32[3] = ntohl(llv6_addr->s6_addr32[3]); |
| 602 | |
| 603 | memcpy(&odu_bridge_ctx->llv6_addr, &llv6_addr_host, |
| 604 | sizeof(odu_bridge_ctx->llv6_addr)); |
| 605 | ODU_BRIDGE_DBG_LOW("LLV6 addr: %pI6c\n", &odu_bridge_ctx->llv6_addr); |
| 606 | |
| 607 | ODU_BRIDGE_FUNC_EXIT(); |
| 608 | |
| 609 | return 0; |
| 610 | }; |
| 611 | |
| 612 | static long odu_bridge_ioctl(struct file *filp, |
| 613 | unsigned int cmd, |
| 614 | unsigned long arg) |
| 615 | { |
| 616 | int res = 0; |
| 617 | struct in6_addr llv6_addr; |
| 618 | |
| 619 | ODU_BRIDGE_DBG("cmd=%x nr=%d\n", cmd, _IOC_NR(cmd)); |
| 620 | |
| 621 | if ((_IOC_TYPE(cmd) != ODU_BRIDGE_IOC_MAGIC) || |
| 622 | (_IOC_NR(cmd) >= ODU_BRIDGE_IOCTL_MAX)) { |
| 623 | ODU_BRIDGE_ERR("Invalid ioctl\n"); |
| 624 | return -ENOIOCTLCMD; |
| 625 | } |
| 626 | |
| 627 | switch (cmd) { |
| 628 | case ODU_BRIDGE_IOC_SET_MODE: |
| 629 | ODU_BRIDGE_DBG("ODU_BRIDGE_IOC_SET_MODE ioctl called\n"); |
| 630 | res = odu_bridge_set_mode(arg); |
| 631 | if (res) { |
| 632 | ODU_BRIDGE_ERR("Error, res = %d\n", res); |
| 633 | break; |
| 634 | } |
| 635 | break; |
| 636 | |
| 637 | case ODU_BRIDGE_IOC_SET_LLV6_ADDR: |
| 638 | ODU_BRIDGE_DBG("ODU_BRIDGE_IOC_SET_LLV6_ADDR ioctl called\n"); |
| 639 | res = copy_from_user(&llv6_addr, |
| 640 | (struct in6_addr *)arg, |
| 641 | sizeof(llv6_addr)); |
| 642 | if (res) { |
| 643 | ODU_BRIDGE_ERR("Error, res = %d\n", res); |
| 644 | res = -EFAULT; |
| 645 | break; |
| 646 | } |
| 647 | |
| 648 | res = odu_bridge_set_llv6_addr(&llv6_addr); |
| 649 | if (res) { |
| 650 | ODU_BRIDGE_ERR("Error, res = %d\n", res); |
| 651 | break; |
| 652 | } |
| 653 | break; |
| 654 | |
| 655 | default: |
| 656 | ODU_BRIDGE_ERR("Unknown ioctl: %d\n", cmd); |
| 657 | WARN_ON(1); |
| 658 | } |
| 659 | |
| 660 | return res; |
| 661 | } |
| 662 | |
| 663 | #ifdef CONFIG_COMPAT |
| 664 | static long compat_odu_bridge_ioctl(struct file *file, |
| 665 | unsigned int cmd, unsigned long arg) |
| 666 | { |
| 667 | switch (cmd) { |
| 668 | case ODU_BRIDGE_IOC_SET_LLV6_ADDR32: |
| 669 | cmd = ODU_BRIDGE_IOC_SET_LLV6_ADDR; |
| 670 | break; |
| 671 | case ODU_BRIDGE_IOC_SET_MODE: |
| 672 | break; |
| 673 | default: |
| 674 | return -ENOIOCTLCMD; |
| 675 | } |
| 676 | return odu_bridge_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); |
| 677 | } |
| 678 | #endif |
| 679 | |
| 680 | #ifdef CONFIG_DEBUG_FS |
| 681 | static struct dentry *dent; |
| 682 | static struct dentry *dfile_stats; |
| 683 | static struct dentry *dfile_mode; |
| 684 | |
| 685 | static ssize_t odu_debugfs_stats(struct file *file, |
| 686 | char __user *ubuf, |
| 687 | size_t count, |
| 688 | loff_t *ppos) |
| 689 | { |
| 690 | int nbytes = 0; |
| 691 | |
| 692 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 693 | ODU_MAX_MSG_LEN - nbytes, |
| 694 | "UL packets: %lld\n", |
| 695 | odu_bridge_ctx->stats.num_ul_packets); |
| 696 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 697 | ODU_MAX_MSG_LEN - nbytes, |
| 698 | "DL packets: %lld\n", |
| 699 | odu_bridge_ctx->stats.num_dl_packets); |
| 700 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 701 | ODU_MAX_MSG_LEN - nbytes, |
| 702 | "LAN packets: %lld\n", |
| 703 | odu_bridge_ctx->stats.num_lan_packets); |
| 704 | return simple_read_from_buffer(ubuf, count, ppos, dbg_buff, nbytes); |
| 705 | } |
| 706 | |
| 707 | static ssize_t odu_debugfs_hw_bridge_mode_write(struct file *file, |
| 708 | const char __user *ubuf, |
| 709 | size_t count, |
| 710 | loff_t *ppos) |
| 711 | { |
| 712 | unsigned long missing; |
| 713 | enum odu_bridge_mode mode; |
| 714 | |
| 715 | if (sizeof(dbg_buff) < count + 1) |
| 716 | return -EFAULT; |
| 717 | |
| 718 | missing = copy_from_user(dbg_buff, ubuf, count); |
| 719 | if (missing) |
| 720 | return -EFAULT; |
| 721 | |
| 722 | if (count > 0) |
| 723 | dbg_buff[count-1] = '\0'; |
| 724 | |
| 725 | if (strcmp(dbg_buff, "router") == 0) { |
| 726 | mode = ODU_BRIDGE_MODE_ROUTER; |
| 727 | } else if (strcmp(dbg_buff, "bridge") == 0) { |
| 728 | mode = ODU_BRIDGE_MODE_BRIDGE; |
| 729 | } else { |
| 730 | ODU_BRIDGE_ERR("Bad mode, got %s,\n" |
| 731 | "Use <router> or <bridge>.\n", dbg_buff); |
| 732 | return count; |
| 733 | } |
| 734 | |
| 735 | odu_bridge_set_mode(mode); |
| 736 | return count; |
| 737 | } |
| 738 | |
| 739 | static ssize_t odu_debugfs_hw_bridge_mode_read(struct file *file, |
| 740 | char __user *ubuf, |
| 741 | size_t count, |
| 742 | loff_t *ppos) |
| 743 | { |
| 744 | int nbytes = 0; |
| 745 | |
| 746 | switch (odu_bridge_ctx->mode) { |
| 747 | case ODU_BRIDGE_MODE_ROUTER: |
| 748 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 749 | ODU_MAX_MSG_LEN - nbytes, |
| 750 | "router\n"); |
| 751 | break; |
| 752 | case ODU_BRIDGE_MODE_BRIDGE: |
| 753 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 754 | ODU_MAX_MSG_LEN - nbytes, |
| 755 | "bridge\n"); |
| 756 | break; |
| 757 | default: |
| 758 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 759 | ODU_MAX_MSG_LEN - nbytes, |
| 760 | "mode error\n"); |
| 761 | break; |
| 762 | |
| 763 | } |
| 764 | |
| 765 | return simple_read_from_buffer(ubuf, count, ppos, dbg_buff, nbytes); |
| 766 | } |
| 767 | |
| 768 | const struct file_operations odu_stats_ops = { |
| 769 | .read = odu_debugfs_stats, |
| 770 | }; |
| 771 | |
| 772 | const struct file_operations odu_hw_bridge_mode_ops = { |
| 773 | .read = odu_debugfs_hw_bridge_mode_read, |
| 774 | .write = odu_debugfs_hw_bridge_mode_write, |
| 775 | }; |
| 776 | |
| 777 | static void odu_debugfs_init(void) |
| 778 | { |
| 779 | const mode_t read_only_mode = S_IRUSR | S_IRGRP | S_IROTH; |
| 780 | const mode_t read_write_mode = S_IRUSR | S_IRGRP | S_IROTH | |
| 781 | S_IWUSR | S_IWGRP | S_IWOTH; |
| 782 | |
| 783 | dent = debugfs_create_dir("odu_ipa_bridge", 0); |
| 784 | if (IS_ERR(dent)) { |
| 785 | ODU_BRIDGE_ERR("fail to create folder odu_ipa_bridge\n"); |
| 786 | return; |
| 787 | } |
| 788 | |
| 789 | dfile_stats = |
| 790 | debugfs_create_file("stats", read_only_mode, dent, |
| 791 | 0, &odu_stats_ops); |
| 792 | if (!dfile_stats || IS_ERR(dfile_stats)) { |
| 793 | ODU_BRIDGE_ERR("fail to create file stats\n"); |
| 794 | goto fail; |
| 795 | } |
| 796 | |
| 797 | dfile_mode = |
| 798 | debugfs_create_file("mode", read_write_mode, |
| 799 | dent, 0, &odu_hw_bridge_mode_ops); |
| 800 | if (!dfile_mode || |
| 801 | IS_ERR(dfile_mode)) { |
| 802 | ODU_BRIDGE_ERR("fail to create file dfile_mode\n"); |
| 803 | goto fail; |
| 804 | } |
| 805 | |
| 806 | return; |
| 807 | fail: |
| 808 | debugfs_remove_recursive(dent); |
| 809 | } |
| 810 | |
| 811 | static void odu_debugfs_destroy(void) |
| 812 | { |
| 813 | debugfs_remove_recursive(dent); |
| 814 | } |
| 815 | |
| 816 | #else |
| 817 | static void odu_debugfs_init(void) {} |
| 818 | static void odu_debugfs_destroy(void) {} |
| 819 | #endif /* CONFIG_DEBUG_FS */ |
| 820 | |
| 821 | |
| 822 | static const struct file_operations odu_bridge_drv_fops = { |
| 823 | .owner = THIS_MODULE, |
| 824 | .unlocked_ioctl = odu_bridge_ioctl, |
| 825 | #ifdef CONFIG_COMPAT |
| 826 | .compat_ioctl = compat_odu_bridge_ioctl, |
| 827 | #endif |
| 828 | }; |
| 829 | |
| 830 | /** |
| 831 | * odu_bridge_tx_dp() - Send skb to ODU bridge |
| 832 | * @skb: skb to send |
| 833 | * @metadata: metadata on packet |
| 834 | * |
| 835 | * This function handles uplink packet. |
| 836 | * In Router Mode: |
| 837 | * packet is sent directly to IPA. |
| 838 | * In Router Mode: |
| 839 | * packet is classified if it should arrive to network stack. |
| 840 | * QMI IP packet should arrive to APPS network stack |
| 841 | * IPv6 Multicast packet should arrive to APPS network stack and Q6 |
| 842 | * |
| 843 | * Return codes: 0- success, error otherwise |
| 844 | */ |
| 845 | int odu_bridge_tx_dp(struct sk_buff *skb, struct ipa_tx_meta *metadata) |
| 846 | { |
| 847 | struct sk_buff *skb_copied = NULL; |
| 848 | struct ipv6hdr *ipv6hdr; |
| 849 | int res; |
| 850 | |
| 851 | ODU_BRIDGE_FUNC_ENTRY(); |
| 852 | |
| 853 | switch (odu_bridge_ctx->mode) { |
| 854 | case ODU_BRIDGE_MODE_ROUTER: |
| 855 | /* Router mode - pass skb to IPA */ |
| 856 | res = ipa_tx_dp(IPA_CLIENT_ODU_PROD, skb, metadata); |
| 857 | if (res) { |
| 858 | ODU_BRIDGE_DBG("tx dp failed %d\n", res); |
| 859 | goto out; |
| 860 | } |
| 861 | odu_bridge_ctx->stats.num_ul_packets++; |
| 862 | goto out; |
| 863 | |
| 864 | case ODU_BRIDGE_MODE_BRIDGE: |
| 865 | ipv6hdr = (struct ipv6hdr *)(skb->data + ETH_HLEN); |
| 866 | if (ipv6hdr->version == 6 && |
| 867 | ODU_BRIDGE_IS_QMI_ADDR(ipv6hdr->daddr)) { |
| 868 | ODU_BRIDGE_DBG_LOW("QMI packet\n"); |
| 869 | skb_copied = skb_clone(skb, GFP_KERNEL); |
| 870 | if (!skb_copied) { |
| 871 | ODU_BRIDGE_ERR("No memory\n"); |
| 872 | return -ENOMEM; |
| 873 | } |
| 874 | odu_bridge_ctx->tx_dp_notify(odu_bridge_ctx->priv, |
| 875 | IPA_RECEIVE, |
| 876 | (unsigned long)skb_copied); |
| 877 | odu_bridge_ctx->tx_dp_notify(odu_bridge_ctx->priv, |
| 878 | IPA_WRITE_DONE, |
| 879 | (unsigned long)skb); |
| 880 | odu_bridge_ctx->stats.num_ul_packets++; |
| 881 | odu_bridge_ctx->stats.num_lan_packets++; |
| 882 | res = 0; |
| 883 | goto out; |
| 884 | } |
| 885 | |
| 886 | if (ipv6hdr->version == 6 && |
| 887 | ipv6_addr_is_multicast(&ipv6hdr->daddr)) { |
| 888 | ODU_BRIDGE_DBG_LOW( |
| 889 | "Multicast pkt, send to APPS and IPA\n"); |
| 890 | skb_copied = skb_clone(skb, GFP_KERNEL); |
| 891 | if (!skb_copied) { |
| 892 | ODU_BRIDGE_ERR("No memory\n"); |
| 893 | return -ENOMEM; |
| 894 | } |
| 895 | |
| 896 | res = ipa_tx_dp(IPA_CLIENT_ODU_PROD, skb, metadata); |
| 897 | if (res) { |
| 898 | ODU_BRIDGE_DBG("tx dp failed %d\n", res); |
| 899 | dev_kfree_skb(skb_copied); |
| 900 | goto out; |
| 901 | } |
| 902 | |
| 903 | odu_bridge_ctx->tx_dp_notify(odu_bridge_ctx->priv, |
| 904 | IPA_RECEIVE, |
| 905 | (unsigned long)skb_copied); |
| 906 | odu_bridge_ctx->stats.num_ul_packets++; |
| 907 | odu_bridge_ctx->stats.num_lan_packets++; |
| 908 | goto out; |
| 909 | } |
| 910 | |
| 911 | res = ipa_tx_dp(IPA_CLIENT_ODU_PROD, skb, metadata); |
| 912 | if (res) { |
| 913 | ODU_BRIDGE_DBG("tx dp failed %d\n", res); |
| 914 | goto out; |
| 915 | } |
| 916 | odu_bridge_ctx->stats.num_ul_packets++; |
| 917 | goto out; |
| 918 | |
| 919 | default: |
| 920 | ODU_BRIDGE_ERR("Unsupported mode: %d\n", odu_bridge_ctx->mode); |
| 921 | WARN_ON(1); |
| 922 | res = -EFAULT; |
| 923 | |
| 924 | } |
| 925 | out: |
| 926 | ODU_BRIDGE_FUNC_EXIT(); |
| 927 | return res; |
| 928 | } |
| 929 | EXPORT_SYMBOL(odu_bridge_tx_dp); |
| 930 | |
| 931 | static int odu_bridge_add_hdrs(void) |
| 932 | { |
| 933 | struct ipa_ioc_add_hdr *hdrs; |
| 934 | struct ipa_hdr_add *ipv4_hdr; |
| 935 | struct ipa_hdr_add *ipv6_hdr; |
| 936 | struct ethhdr *eth_ipv4; |
| 937 | struct ethhdr *eth_ipv6; |
| 938 | int res; |
| 939 | |
| 940 | ODU_BRIDGE_FUNC_ENTRY(); |
| 941 | hdrs = kzalloc(sizeof(*hdrs) + sizeof(*ipv4_hdr) + sizeof(*ipv6_hdr), |
| 942 | GFP_KERNEL); |
| 943 | if (!hdrs) { |
| 944 | ODU_BRIDGE_ERR("no mem\n"); |
| 945 | res = -ENOMEM; |
| 946 | goto out; |
| 947 | } |
| 948 | ipv4_hdr = &hdrs->hdr[0]; |
| 949 | eth_ipv4 = (struct ethhdr *)(ipv4_hdr->hdr); |
| 950 | ipv6_hdr = &hdrs->hdr[1]; |
| 951 | eth_ipv6 = (struct ethhdr *)(ipv6_hdr->hdr); |
| 952 | strlcpy(ipv4_hdr->name, ODU_BRIDGE_IPV4_HDR_NAME, |
| 953 | IPA_RESOURCE_NAME_MAX); |
| 954 | memcpy(eth_ipv4->h_source, odu_bridge_ctx->device_ethaddr, ETH_ALEN); |
| 955 | eth_ipv4->h_proto = htons(ETH_P_IP); |
| 956 | ipv4_hdr->hdr_len = ETH_HLEN; |
| 957 | ipv4_hdr->is_partial = 1; |
| 958 | ipv4_hdr->is_eth2_ofst_valid = 1; |
| 959 | ipv4_hdr->eth2_ofst = 0; |
| 960 | strlcpy(ipv6_hdr->name, ODU_BRIDGE_IPV6_HDR_NAME, |
| 961 | IPA_RESOURCE_NAME_MAX); |
| 962 | memcpy(eth_ipv6->h_source, odu_bridge_ctx->device_ethaddr, ETH_ALEN); |
| 963 | eth_ipv6->h_proto = htons(ETH_P_IPV6); |
| 964 | ipv6_hdr->hdr_len = ETH_HLEN; |
| 965 | ipv6_hdr->is_partial = 1; |
| 966 | ipv6_hdr->is_eth2_ofst_valid = 1; |
| 967 | ipv6_hdr->eth2_ofst = 0; |
| 968 | hdrs->commit = 1; |
| 969 | hdrs->num_hdrs = 2; |
| 970 | res = ipa_add_hdr(hdrs); |
| 971 | if (res) { |
| 972 | ODU_BRIDGE_ERR("Fail on Header-Insertion(%d)\n", res); |
| 973 | goto out_free_mem; |
| 974 | } |
| 975 | if (ipv4_hdr->status) { |
| 976 | ODU_BRIDGE_ERR("Fail on Header-Insertion ipv4(%d)\n", |
| 977 | ipv4_hdr->status); |
| 978 | res = ipv4_hdr->status; |
| 979 | goto out_free_mem; |
| 980 | } |
| 981 | if (ipv6_hdr->status) { |
| 982 | ODU_BRIDGE_ERR("Fail on Header-Insertion ipv6(%d)\n", |
| 983 | ipv6_hdr->status); |
| 984 | res = ipv6_hdr->status; |
| 985 | goto out_free_mem; |
| 986 | } |
| 987 | odu_bridge_ctx->odu_br_ipv4_hdr_hdl = ipv4_hdr->hdr_hdl; |
| 988 | odu_bridge_ctx->odu_br_ipv6_hdr_hdl = ipv6_hdr->hdr_hdl; |
| 989 | |
| 990 | res = 0; |
| 991 | out_free_mem: |
| 992 | kfree(hdrs); |
| 993 | out: |
| 994 | ODU_BRIDGE_FUNC_EXIT(); |
| 995 | return res; |
| 996 | } |
| 997 | |
| 998 | static void odu_bridge_del_hdrs(void) |
| 999 | { |
| 1000 | struct ipa_ioc_del_hdr *del_hdr; |
| 1001 | struct ipa_hdr_del *ipv4; |
| 1002 | struct ipa_hdr_del *ipv6; |
| 1003 | int result; |
| 1004 | |
| 1005 | del_hdr = kzalloc(sizeof(*del_hdr) + sizeof(*ipv4) + |
| 1006 | sizeof(*ipv6), GFP_KERNEL); |
| 1007 | if (!del_hdr) |
| 1008 | return; |
| 1009 | del_hdr->commit = 1; |
| 1010 | del_hdr->num_hdls = 2; |
| 1011 | ipv4 = &del_hdr->hdl[0]; |
| 1012 | ipv4->hdl = odu_bridge_ctx->odu_br_ipv4_hdr_hdl; |
| 1013 | ipv6 = &del_hdr->hdl[1]; |
| 1014 | ipv6->hdl = odu_bridge_ctx->odu_br_ipv6_hdr_hdl; |
| 1015 | result = ipa_del_hdr(del_hdr); |
| 1016 | if (result || ipv4->status || ipv6->status) |
| 1017 | ODU_BRIDGE_ERR("ipa_del_hdr failed"); |
| 1018 | kfree(del_hdr); |
| 1019 | } |
| 1020 | |
| 1021 | /** |
| 1022 | * odu_bridge_register_properties() - set Tx/Rx properties for ipacm |
| 1023 | * |
| 1024 | * Register the network interface interface with Tx and Rx properties |
| 1025 | * Tx properties are for data flowing from IPA to adapter, they |
| 1026 | * have Header-Insertion properties both for Ipv4 and Ipv6 Ethernet framing. |
| 1027 | * Rx properties are for data flowing from adapter to IPA, they have |
| 1028 | * simple rule which always "hit". |
| 1029 | * |
| 1030 | */ |
| 1031 | static int odu_bridge_register_properties(void) |
| 1032 | { |
| 1033 | struct ipa_tx_intf tx_properties = {0}; |
| 1034 | struct ipa_ioc_tx_intf_prop properties[2] = { {0}, {0} }; |
| 1035 | struct ipa_ioc_tx_intf_prop *ipv4_property; |
| 1036 | struct ipa_ioc_tx_intf_prop *ipv6_property; |
| 1037 | struct ipa_ioc_rx_intf_prop rx_ioc_properties[2] = { {0}, {0} }; |
| 1038 | struct ipa_rx_intf rx_properties = {0}; |
| 1039 | struct ipa_ioc_rx_intf_prop *rx_ipv4_property; |
| 1040 | struct ipa_ioc_rx_intf_prop *rx_ipv6_property; |
| 1041 | int res = 0; |
| 1042 | |
| 1043 | ODU_BRIDGE_FUNC_ENTRY(); |
| 1044 | |
| 1045 | tx_properties.prop = properties; |
| 1046 | ipv4_property = &tx_properties.prop[0]; |
| 1047 | ipv4_property->ip = IPA_IP_v4; |
| 1048 | ipv4_property->dst_pipe = IPA_CLIENT_ODU_EMB_CONS; |
| 1049 | ipv4_property->hdr_l2_type = IPA_HDR_L2_ETHERNET_II; |
| 1050 | strlcpy(ipv4_property->hdr_name, ODU_BRIDGE_IPV4_HDR_NAME, |
| 1051 | IPA_RESOURCE_NAME_MAX); |
| 1052 | ipv6_property = &tx_properties.prop[1]; |
| 1053 | ipv6_property->ip = IPA_IP_v6; |
| 1054 | ipv6_property->dst_pipe = IPA_CLIENT_ODU_EMB_CONS; |
| 1055 | ipv6_property->hdr_l2_type = IPA_HDR_L2_ETHERNET_II; |
| 1056 | strlcpy(ipv6_property->hdr_name, ODU_BRIDGE_IPV6_HDR_NAME, |
| 1057 | IPA_RESOURCE_NAME_MAX); |
| 1058 | tx_properties.num_props = 2; |
| 1059 | |
| 1060 | rx_properties.prop = rx_ioc_properties; |
| 1061 | rx_ipv4_property = &rx_properties.prop[0]; |
| 1062 | rx_ipv4_property->ip = IPA_IP_v4; |
| 1063 | rx_ipv4_property->attrib.attrib_mask = 0; |
| 1064 | rx_ipv4_property->src_pipe = IPA_CLIENT_ODU_PROD; |
| 1065 | rx_ipv4_property->hdr_l2_type = IPA_HDR_L2_ETHERNET_II; |
| 1066 | rx_ipv6_property = &rx_properties.prop[1]; |
| 1067 | rx_ipv6_property->ip = IPA_IP_v6; |
| 1068 | rx_ipv6_property->attrib.attrib_mask = 0; |
| 1069 | rx_ipv6_property->src_pipe = IPA_CLIENT_ODU_PROD; |
| 1070 | rx_ipv6_property->hdr_l2_type = IPA_HDR_L2_ETHERNET_II; |
| 1071 | rx_properties.num_props = 2; |
| 1072 | |
| 1073 | res = ipa_register_intf(odu_bridge_ctx->netdev_name, &tx_properties, |
| 1074 | &rx_properties); |
| 1075 | if (res) { |
| 1076 | ODU_BRIDGE_ERR("fail on Tx/Rx properties registration %d\n", |
| 1077 | res); |
| 1078 | } |
| 1079 | |
| 1080 | ODU_BRIDGE_FUNC_EXIT(); |
| 1081 | |
| 1082 | return res; |
| 1083 | } |
| 1084 | |
| 1085 | static void odu_bridge_deregister_properties(void) |
| 1086 | { |
| 1087 | int res; |
| 1088 | |
| 1089 | ODU_BRIDGE_FUNC_ENTRY(); |
| 1090 | res = ipa_deregister_intf(odu_bridge_ctx->netdev_name); |
| 1091 | if (res) |
| 1092 | ODU_BRIDGE_ERR("Fail on Tx prop deregister %d\n", res); |
| 1093 | ODU_BRIDGE_FUNC_EXIT(); |
| 1094 | } |
| 1095 | |
| 1096 | /** |
| 1097 | * odu_bridge_init() - Initialize the ODU bridge driver |
| 1098 | * @params: initialization parameters |
| 1099 | * |
| 1100 | * This function initialize all bridge internal data and register odu bridge to |
| 1101 | * kernel for IOCTL and debugfs. |
| 1102 | * Header addition and properties are registered to IPA driver. |
| 1103 | * |
| 1104 | * Return codes: 0: success, |
| 1105 | * -EINVAL - Bad parameter |
| 1106 | * Other negative value - Failure |
| 1107 | */ |
| 1108 | int odu_bridge_init(struct odu_bridge_params *params) |
| 1109 | { |
| 1110 | int res; |
| 1111 | |
| 1112 | ODU_BRIDGE_FUNC_ENTRY(); |
| 1113 | |
| 1114 | if (!params) { |
| 1115 | ODU_BRIDGE_ERR("null pointer params\n"); |
| 1116 | return -EINVAL; |
| 1117 | } |
| 1118 | if (!params->netdev_name) { |
| 1119 | ODU_BRIDGE_ERR("null pointer params->netdev_name\n"); |
| 1120 | return -EINVAL; |
| 1121 | } |
| 1122 | if (!params->tx_dp_notify) { |
| 1123 | ODU_BRIDGE_ERR("null pointer params->tx_dp_notify\n"); |
| 1124 | return -EINVAL; |
| 1125 | } |
| 1126 | if (!params->send_dl_skb) { |
| 1127 | ODU_BRIDGE_ERR("null pointer params->send_dl_skb\n"); |
| 1128 | return -EINVAL; |
| 1129 | } |
| 1130 | if (odu_bridge_ctx) { |
| 1131 | ODU_BRIDGE_ERR("Already initialized\n"); |
| 1132 | return -EFAULT; |
| 1133 | } |
| 1134 | if (!ipa_is_ready()) { |
| 1135 | ODU_BRIDGE_ERR("IPA is not ready\n"); |
| 1136 | return -EFAULT; |
| 1137 | } |
| 1138 | |
| 1139 | ODU_BRIDGE_DBG("device_ethaddr=%pM\n", params->device_ethaddr); |
| 1140 | |
| 1141 | odu_bridge_ctx = kzalloc(sizeof(*odu_bridge_ctx), GFP_KERNEL); |
| 1142 | if (!odu_bridge_ctx) { |
| 1143 | ODU_BRIDGE_ERR("kzalloc err.\n"); |
| 1144 | return -ENOMEM; |
| 1145 | } |
| 1146 | |
| 1147 | odu_bridge_ctx->class = class_create(THIS_MODULE, ODU_BRIDGE_DRV_NAME); |
| 1148 | if (!odu_bridge_ctx->class) { |
| 1149 | ODU_BRIDGE_ERR("Class_create err.\n"); |
| 1150 | res = -ENODEV; |
| 1151 | goto fail_class_create; |
| 1152 | } |
| 1153 | |
| 1154 | res = alloc_chrdev_region(&odu_bridge_ctx->dev_num, 0, 1, |
| 1155 | ODU_BRIDGE_DRV_NAME); |
| 1156 | if (res) { |
| 1157 | ODU_BRIDGE_ERR("alloc_chrdev_region err.\n"); |
| 1158 | res = -ENODEV; |
| 1159 | goto fail_alloc_chrdev_region; |
| 1160 | } |
| 1161 | |
| 1162 | odu_bridge_ctx->dev = device_create(odu_bridge_ctx->class, NULL, |
| 1163 | odu_bridge_ctx->dev_num, odu_bridge_ctx, ODU_BRIDGE_DRV_NAME); |
| 1164 | if (IS_ERR(odu_bridge_ctx->dev)) { |
| 1165 | ODU_BRIDGE_ERR(":device_create err.\n"); |
| 1166 | res = -ENODEV; |
| 1167 | goto fail_device_create; |
| 1168 | } |
| 1169 | |
| 1170 | cdev_init(&odu_bridge_ctx->cdev, &odu_bridge_drv_fops); |
| 1171 | odu_bridge_ctx->cdev.owner = THIS_MODULE; |
| 1172 | odu_bridge_ctx->cdev.ops = &odu_bridge_drv_fops; |
| 1173 | |
| 1174 | res = cdev_add(&odu_bridge_ctx->cdev, odu_bridge_ctx->dev_num, 1); |
| 1175 | if (res) { |
| 1176 | ODU_BRIDGE_ERR(":cdev_add err=%d\n", -res); |
| 1177 | res = -ENODEV; |
| 1178 | goto fail_cdev_add; |
| 1179 | } |
| 1180 | |
| 1181 | odu_debugfs_init(); |
| 1182 | |
| 1183 | strlcpy(odu_bridge_ctx->netdev_name, params->netdev_name, |
| 1184 | IPA_RESOURCE_NAME_MAX); |
| 1185 | odu_bridge_ctx->priv = params->priv; |
| 1186 | odu_bridge_ctx->tx_dp_notify = params->tx_dp_notify; |
| 1187 | odu_bridge_ctx->send_dl_skb = params->send_dl_skb; |
| 1188 | memcpy(odu_bridge_ctx->device_ethaddr, params->device_ethaddr, |
| 1189 | ETH_ALEN); |
| 1190 | odu_bridge_ctx->ipa_sys_desc_size = params->ipa_desc_size; |
| 1191 | odu_bridge_ctx->mode = ODU_BRIDGE_MODE_ROUTER; |
| 1192 | |
| 1193 | mutex_init(&odu_bridge_ctx->lock); |
| 1194 | |
| 1195 | res = odu_bridge_add_hdrs(); |
| 1196 | if (res) { |
| 1197 | ODU_BRIDGE_ERR("fail on odu_bridge_add_hdr %d\n", res); |
| 1198 | goto fail_add_hdrs; |
| 1199 | } |
| 1200 | |
| 1201 | res = odu_bridge_register_properties(); |
| 1202 | if (res) { |
| 1203 | ODU_BRIDGE_ERR("fail on register properties %d\n", res); |
| 1204 | goto fail_register_properties; |
| 1205 | } |
| 1206 | |
| 1207 | ODU_BRIDGE_FUNC_EXIT(); |
| 1208 | return 0; |
| 1209 | |
| 1210 | fail_register_properties: |
| 1211 | odu_bridge_del_hdrs(); |
| 1212 | fail_add_hdrs: |
| 1213 | odu_debugfs_destroy(); |
| 1214 | fail_cdev_add: |
| 1215 | device_destroy(odu_bridge_ctx->class, odu_bridge_ctx->dev_num); |
| 1216 | fail_device_create: |
| 1217 | unregister_chrdev_region(odu_bridge_ctx->dev_num, 1); |
| 1218 | fail_alloc_chrdev_region: |
| 1219 | class_destroy(odu_bridge_ctx->class); |
| 1220 | fail_class_create: |
| 1221 | kfree(odu_bridge_ctx); |
| 1222 | odu_bridge_ctx = NULL; |
| 1223 | return res; |
| 1224 | } |
| 1225 | EXPORT_SYMBOL(odu_bridge_init); |
| 1226 | |
| 1227 | /** |
| 1228 | * odu_bridge_cleanup() - De-Initialize the ODU bridge driver |
| 1229 | * |
| 1230 | * Return codes: 0: success, |
| 1231 | * -EINVAL - Bad parameter |
| 1232 | * Other negative value - Failure |
| 1233 | */ |
| 1234 | int odu_bridge_cleanup(void) |
| 1235 | { |
| 1236 | ODU_BRIDGE_FUNC_ENTRY(); |
| 1237 | |
| 1238 | if (!odu_bridge_ctx) { |
| 1239 | ODU_BRIDGE_ERR("Not initialized\n"); |
| 1240 | return -EFAULT; |
| 1241 | } |
| 1242 | |
| 1243 | if (odu_bridge_ctx->is_connected) { |
| 1244 | ODU_BRIDGE_ERR("cannot deinit while bridge is conncetd\n"); |
| 1245 | return -EFAULT; |
| 1246 | } |
| 1247 | |
| 1248 | odu_bridge_deregister_properties(); |
| 1249 | odu_bridge_del_hdrs(); |
| 1250 | odu_debugfs_destroy(); |
| 1251 | cdev_del(&odu_bridge_ctx->cdev); |
| 1252 | device_destroy(odu_bridge_ctx->class, odu_bridge_ctx->dev_num); |
| 1253 | unregister_chrdev_region(odu_bridge_ctx->dev_num, 1); |
| 1254 | class_destroy(odu_bridge_ctx->class); |
| 1255 | ipc_log_context_destroy(odu_bridge_ctx->logbuf); |
| 1256 | ipc_log_context_destroy(odu_bridge_ctx->logbuf_low); |
| 1257 | kfree(odu_bridge_ctx); |
| 1258 | odu_bridge_ctx = NULL; |
| 1259 | |
| 1260 | ODU_BRIDGE_FUNC_EXIT(); |
| 1261 | return 0; |
| 1262 | } |
| 1263 | EXPORT_SYMBOL(odu_bridge_cleanup); |
| 1264 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1265 | MODULE_LICENSE("GPL v2"); |
| 1266 | MODULE_DESCRIPTION("ODU bridge driver"); |