Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 1 | /* |
| 2 | ************************************************************************** |
Stephen Wang | 3e2dbd1 | 2018-03-14 17:28:17 -0700 | [diff] [blame] | 3 | * Copyright (c) 2013-2018, The Linux Foundation. All rights reserved. |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 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 copies. |
| 7 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 8 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 10 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 11 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 12 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 13 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 14 | ************************************************************************** |
| 15 | */ |
| 16 | |
| 17 | /* |
Murat Sezgin | 5c8c736 | 2014-09-02 17:58:21 -0700 | [diff] [blame] | 18 | * nss_ipv4.c |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 19 | * NSS IPv4 APIs |
| 20 | */ |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 21 | #include <linux/sysctl.h> |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 22 | #include "nss_tx_rx_common.h" |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 23 | #include "nss_dscp_map.h" |
Yu Huang | 8c10708 | 2017-07-24 14:58:26 -0700 | [diff] [blame] | 24 | #include "nss_ipv4_stats.h" |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 25 | |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 26 | #define NSS_IPV4_TX_MSG_TIMEOUT 1000 /* 1 sec timeout for IPv4 messages */ |
| 27 | |
| 28 | /* |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 29 | * Private data structure for ipv4 configuration |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 30 | */ |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 31 | struct nss_ipv4_pvt { |
| 32 | struct semaphore sem; /* Semaphore structure */ |
| 33 | struct completion complete; /* completion structure */ |
| 34 | int response; /* Response from FW */ |
| 35 | void *cb; /* Original cb for sync msgs */ |
| 36 | void *app_data; /* Original app_data for sync msgs */ |
| 37 | } nss_ipv4_pvt; |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 38 | |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 39 | /* |
| 40 | * Private data structure for ipv4 connection information. |
| 41 | */ |
| 42 | struct nss_ipv4_conn_table_info { |
| 43 | uint32_t ce_table_size; /* Size of connection table entry in NSS FW */ |
| 44 | uint32_t cme_table_size; /* Size of connection match table entry in NSS FW */ |
| 45 | unsigned long ce_mem; /* Start address for connection entry table */ |
| 46 | unsigned long cme_mem; /* Start address for connection match entry table */ |
| 47 | } nss_ipv4_ct_info; |
| 48 | |
Vijay Dewangan | 4861f4e | 2014-10-14 16:56:35 -0700 | [diff] [blame] | 49 | int nss_ipv4_conn_cfg __read_mostly = NSS_DEFAULT_NUM_CONN; |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 50 | int nss_ipv4_accel_mode_cfg __read_mostly = 1; |
| 51 | |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 52 | static struct nss_dscp_map_entry mapping[NSS_DSCP_MAP_ARRAY_SIZE]; |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 53 | |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 54 | /* |
Suruchi Agarwal | 611ecd0 | 2016-08-04 15:54:35 -0700 | [diff] [blame] | 55 | * Callback for conn_sync_many request message. |
| 56 | */ |
| 57 | nss_ipv4_msg_callback_t nss_ipv4_conn_sync_many_msg_cb = NULL; |
| 58 | |
| 59 | /* |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 60 | * nss_ipv4_dscp_map_usage() |
| 61 | * Help function shows the usage of the command. |
Gareth Williams | 958aa82 | 2015-02-04 19:36:39 +0000 | [diff] [blame] | 62 | */ |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 63 | static inline void nss_ipv4_dscp_map_usage(void) |
Gareth Williams | 958aa82 | 2015-02-04 19:36:39 +0000 | [diff] [blame] | 64 | { |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 65 | nss_info_always("\nUsage:\n"); |
| 66 | nss_info_always("echo <dscp> <action> <prio> > /proc/sys/dev/nss/ipv4cfg/ipv4_dscp_map\n\n"); |
| 67 | nss_info_always("dscp[0-63] action[0-%u] prio[0-%u]:\n\n", |
| 68 | NSS_IPV4_DSCP_MAP_ACTION_MAX - 1, |
| 69 | NSS_DSCP_MAP_PRIORITY_MAX - 1); |
Gareth Williams | 958aa82 | 2015-02-04 19:36:39 +0000 | [diff] [blame] | 70 | } |
Guojun Jin | 9a1cb28 | 2017-07-13 17:32:07 -0700 | [diff] [blame] | 71 | |
| 72 | /* |
Sol Kavy | 2783c07 | 2014-04-05 12:53:13 -0700 | [diff] [blame] | 73 | * nss_ipv4_rx_msg_handler() |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 74 | * Handle NSS -> HLOS messages for IPv4 bridge/route |
| 75 | */ |
Sol Kavy | 2783c07 | 2014-04-05 12:53:13 -0700 | [diff] [blame] | 76 | static void nss_ipv4_rx_msg_handler(struct nss_ctx_instance *nss_ctx, struct nss_cmn_msg *ncm, __attribute__((unused))void *app_data) |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 77 | { |
| 78 | struct nss_ipv4_msg *nim = (struct nss_ipv4_msg *)ncm; |
Sol Kavy | 57d24b4 | 2014-04-05 13:45:36 -0700 | [diff] [blame] | 79 | nss_ipv4_msg_callback_t cb; |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 80 | |
| 81 | BUG_ON(ncm->interface != NSS_IPV4_RX_INTERFACE); |
| 82 | |
| 83 | /* |
| 84 | * Sanity check the message type |
| 85 | */ |
Murat Sezgin | 5c8c736 | 2014-09-02 17:58:21 -0700 | [diff] [blame] | 86 | if (ncm->type >= NSS_IPV4_MAX_MSG_TYPES) { |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 87 | nss_warning("%p: message type out of range: %d", nss_ctx, ncm->type); |
| 88 | return; |
| 89 | } |
| 90 | |
Suruchi Agarwal | ef8a870 | 2016-01-08 12:40:08 -0800 | [diff] [blame] | 91 | if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_ipv4_msg)) { |
| 92 | nss_warning("%p: message length is invalid: %d", nss_ctx, nss_cmn_get_msg_len(ncm)); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 93 | return; |
| 94 | } |
| 95 | |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 96 | /* |
Suruchi Agarwal | e3940e7 | 2016-07-06 15:56:51 -0700 | [diff] [blame] | 97 | * Trace messages. |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 98 | */ |
Suruchi Agarwal | e3940e7 | 2016-07-06 15:56:51 -0700 | [diff] [blame] | 99 | nss_ipv4_log_rx_msg(nim); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 100 | |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 101 | switch (nim->cm.type) { |
Murat Sezgin | 0c0561d | 2014-04-09 18:55:58 -0700 | [diff] [blame] | 102 | case NSS_IPV4_RX_NODE_STATS_SYNC_MSG: |
| 103 | /* |
| 104 | * Update driver statistics on node sync. |
| 105 | */ |
Yu Huang | 8c10708 | 2017-07-24 14:58:26 -0700 | [diff] [blame] | 106 | nss_ipv4_stats_node_sync(nss_ctx, &nim->msg.node_stats); |
Murat Sezgin | 0c0561d | 2014-04-09 18:55:58 -0700 | [diff] [blame] | 107 | break; |
| 108 | |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 109 | case NSS_IPV4_RX_CONN_STATS_SYNC_MSG: |
Sol Kavy | 57d24b4 | 2014-04-05 13:45:36 -0700 | [diff] [blame] | 110 | /* |
| 111 | * Update driver statistics on connection sync. |
| 112 | */ |
Yu Huang | 8c10708 | 2017-07-24 14:58:26 -0700 | [diff] [blame] | 113 | nss_ipv4_stats_conn_sync(nss_ctx, &nim->msg.conn_stats); |
Sakthi Vignesh Radhakrishnan | 515f8c2 | 2014-06-21 15:04:19 -0700 | [diff] [blame] | 114 | break; |
Stephen Wang | 709f9b5 | 2015-07-07 14:48:35 -0700 | [diff] [blame] | 115 | |
| 116 | case NSS_IPV4_TX_CONN_STATS_SYNC_MANY_MSG: |
| 117 | /* |
| 118 | * Update driver statistics on connection sync many. |
| 119 | */ |
Yu Huang | 8c10708 | 2017-07-24 14:58:26 -0700 | [diff] [blame] | 120 | nss_ipv4_stats_conn_sync_many(nss_ctx, &nim->msg.conn_stats_many); |
Stephen Wang | aed4633 | 2016-12-12 17:29:03 -0800 | [diff] [blame] | 121 | ncm->cb = (nss_ptr_t)nss_ipv4_conn_sync_many_msg_cb; |
Stephen Wang | 709f9b5 | 2015-07-07 14:48:35 -0700 | [diff] [blame] | 122 | break; |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | /* |
Sol Kavy | 57d24b4 | 2014-04-05 13:45:36 -0700 | [diff] [blame] | 126 | * Update the callback and app_data for NOTIFY messages, IPv4 sends all notify messages |
| 127 | * to the same callback/app_data. |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 128 | */ |
Sol Kavy | 57d24b4 | 2014-04-05 13:45:36 -0700 | [diff] [blame] | 129 | if (nim->cm.response == NSS_CMM_RESPONSE_NOTIFY) { |
Stephen Wang | aed4633 | 2016-12-12 17:29:03 -0800 | [diff] [blame] | 130 | ncm->cb = (nss_ptr_t)nss_ctx->nss_top->ipv4_callback; |
| 131 | ncm->app_data = (nss_ptr_t)nss_ctx->nss_top->ipv4_ctx; |
Sol Kavy | 57d24b4 | 2014-04-05 13:45:36 -0700 | [diff] [blame] | 132 | } |
Sol Kavy | 2783c07 | 2014-04-05 12:53:13 -0700 | [diff] [blame] | 133 | |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 134 | /* |
| 135 | * Do we have a callback? |
| 136 | */ |
| 137 | if (!ncm->cb) { |
| 138 | return; |
| 139 | } |
| 140 | |
| 141 | /* |
| 142 | * Callback |
| 143 | */ |
Sol Kavy | 57d24b4 | 2014-04-05 13:45:36 -0700 | [diff] [blame] | 144 | cb = (nss_ipv4_msg_callback_t)ncm->cb; |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 145 | cb((void *)ncm->app_data, nim); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | /* |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 149 | * nss_ipv4_tx_sync_callback() |
| 150 | * Callback to handle the completion of synchronous tx messages. |
| 151 | */ |
| 152 | static void nss_ipv4_tx_sync_callback(void *app_data, struct nss_ipv4_msg *nim) |
| 153 | { |
| 154 | nss_ipv4_msg_callback_t callback = (nss_ipv4_msg_callback_t)nss_ipv4_pvt.cb; |
| 155 | void *data = nss_ipv4_pvt.app_data; |
| 156 | |
| 157 | nss_ipv4_pvt.cb = NULL; |
| 158 | nss_ipv4_pvt.app_data = NULL; |
| 159 | |
| 160 | if (nim->cm.response != NSS_CMN_RESPONSE_ACK) { |
| 161 | nss_warning("ipv4 error response %d\n", nim->cm.response); |
| 162 | nss_ipv4_pvt.response = NSS_TX_FAILURE; |
| 163 | } else { |
| 164 | nss_ipv4_pvt.response = NSS_TX_SUCCESS; |
| 165 | } |
| 166 | |
| 167 | if (callback) { |
| 168 | callback(data, nim); |
| 169 | } |
| 170 | |
| 171 | complete(&nss_ipv4_pvt.complete); |
| 172 | } |
| 173 | |
| 174 | /* |
| 175 | * nss_ipv4_dscp_action_get() |
| 176 | * Gets the action mapped to dscp. |
| 177 | */ |
| 178 | enum nss_ipv4_dscp_map_actions nss_ipv4_dscp_action_get(uint8_t dscp) |
| 179 | { |
Sakthi Vignesh Radhakrishnan | 1f7a66b | 2017-10-18 09:33:22 -0700 | [diff] [blame] | 180 | if (dscp >= NSS_DSCP_MAP_ARRAY_SIZE) { |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 181 | nss_warning("dscp:%u invalid\n", dscp); |
| 182 | return NSS_IPV4_DSCP_MAP_ACTION_MAX; |
| 183 | } |
| 184 | |
| 185 | return mapping[dscp].action; |
| 186 | } |
| 187 | EXPORT_SYMBOL(nss_ipv4_dscp_action_get); |
| 188 | |
| 189 | /* |
| 190 | * nss_ipv4_max_conn_count() |
| 191 | * Return the maximum number of IPv4 connections that the NSS acceleration engine supports. |
| 192 | */ |
| 193 | int nss_ipv4_max_conn_count(void) |
| 194 | { |
| 195 | return nss_ipv4_conn_cfg; |
| 196 | } |
| 197 | EXPORT_SYMBOL(nss_ipv4_max_conn_count); |
| 198 | |
| 199 | /* |
| 200 | * nss_ipv4_conn_inquiry() |
| 201 | * Inquiry if a connection has been established in NSS FW |
| 202 | */ |
| 203 | nss_tx_status_t nss_ipv4_conn_inquiry(struct nss_ipv4_5tuple *ipv4_5t_p, |
| 204 | nss_ipv4_msg_callback_t cb) |
| 205 | { |
| 206 | nss_tx_status_t nss_tx_status; |
| 207 | struct nss_ipv4_msg nim; |
| 208 | struct nss_ctx_instance *nss_ctx = &nss_top_main.nss[0]; |
| 209 | |
| 210 | /* |
| 211 | * Initialize inquiry message structure. |
| 212 | * This is async message and the result will be returned |
| 213 | * to the caller by the msg_callback passed in. |
| 214 | */ |
| 215 | memset(&nim, 0, sizeof(nim)); |
| 216 | nss_ipv4_msg_init(&nim, NSS_IPV4_RX_INTERFACE, |
| 217 | NSS_IPV4_TX_CONN_CFG_INQUIRY_MSG, |
| 218 | sizeof(struct nss_ipv4_inquiry_msg), |
| 219 | cb, NULL); |
| 220 | nim.msg.inquiry.rr.tuple = *ipv4_5t_p; |
| 221 | nss_tx_status = nss_ipv4_tx(nss_ctx, &nim); |
| 222 | if (nss_tx_status != NSS_TX_SUCCESS) { |
| 223 | nss_warning("%p: Send inquiry message failed\n", ipv4_5t_p); |
| 224 | } |
| 225 | |
| 226 | return nss_tx_status; |
| 227 | } |
| 228 | EXPORT_SYMBOL(nss_ipv4_conn_inquiry); |
| 229 | |
| 230 | /* |
Stephen Wang | 709f9b5 | 2015-07-07 14:48:35 -0700 | [diff] [blame] | 231 | * nss_ipv4_tx_with_size() |
| 232 | * Transmit an ipv4 message to the FW with a specified size. |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 233 | */ |
Stephen Wang | 709f9b5 | 2015-07-07 14:48:35 -0700 | [diff] [blame] | 234 | nss_tx_status_t nss_ipv4_tx_with_size(struct nss_ctx_instance *nss_ctx, struct nss_ipv4_msg *nim, uint32_t size) |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 235 | { |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 236 | struct nss_cmn_msg *ncm = &nim->cm; |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 237 | |
| 238 | /* |
| 239 | * Sanity check the message |
| 240 | */ |
| 241 | if (ncm->interface != NSS_IPV4_RX_INTERFACE) { |
| 242 | nss_warning("%p: tx request for another interface: %d", nss_ctx, ncm->interface); |
| 243 | return NSS_TX_FAILURE; |
| 244 | } |
| 245 | |
Murat Sezgin | 5c8c736 | 2014-09-02 17:58:21 -0700 | [diff] [blame] | 246 | if (ncm->type >= NSS_IPV4_MAX_MSG_TYPES) { |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 247 | nss_warning("%p: message type out of range: %d", nss_ctx, ncm->type); |
| 248 | return NSS_TX_FAILURE; |
| 249 | } |
| 250 | |
Suruchi Agarwal | e3940e7 | 2016-07-06 15:56:51 -0700 | [diff] [blame] | 251 | /* |
| 252 | * Trace messages. |
| 253 | */ |
| 254 | nss_ipv4_log_tx_msg(nim); |
| 255 | |
Stephen Wang | 3e2dbd1 | 2018-03-14 17:28:17 -0700 | [diff] [blame] | 256 | return nss_core_send_cmd(nss_ctx, nim, sizeof(*nim), size); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 257 | } |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 258 | EXPORT_SYMBOL(nss_ipv4_tx_with_size); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 259 | |
| 260 | /* |
Stephen Wang | 709f9b5 | 2015-07-07 14:48:35 -0700 | [diff] [blame] | 261 | * nss_ipv4_tx() |
| 262 | * Transmit an ipv4 message to the FW. |
| 263 | */ |
| 264 | nss_tx_status_t nss_ipv4_tx(struct nss_ctx_instance *nss_ctx, struct nss_ipv4_msg *nim) |
| 265 | { |
| 266 | return nss_ipv4_tx_with_size(nss_ctx, nim, NSS_NBUF_PAYLOAD_SIZE); |
| 267 | } |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 268 | EXPORT_SYMBOL(nss_ipv4_tx); |
Stephen Wang | 709f9b5 | 2015-07-07 14:48:35 -0700 | [diff] [blame] | 269 | |
| 270 | /* |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 271 | * nss_ipv4_tx_sync() |
| 272 | * Transmit a synchronous ipv4 message to the FW. |
| 273 | */ |
| 274 | nss_tx_status_t nss_ipv4_tx_sync(struct nss_ctx_instance *nss_ctx, struct nss_ipv4_msg *nim) |
| 275 | { |
| 276 | nss_tx_status_t status; |
| 277 | int ret = 0; |
| 278 | |
| 279 | down(&nss_ipv4_pvt.sem); |
| 280 | nss_ipv4_pvt.cb = (void *)nim->cm.cb; |
| 281 | nss_ipv4_pvt.app_data = (void *)nim->cm.app_data; |
| 282 | |
| 283 | nim->cm.cb = (nss_ptr_t)nss_ipv4_tx_sync_callback; |
| 284 | nim->cm.app_data = (nss_ptr_t)NULL; |
| 285 | |
| 286 | status = nss_ipv4_tx(nss_ctx, nim); |
| 287 | if (status != NSS_TX_SUCCESS) { |
| 288 | nss_warning("%p: nss ipv4 msg tx failed\n", nss_ctx); |
| 289 | up(&nss_ipv4_pvt.sem); |
| 290 | return status; |
| 291 | } |
| 292 | |
| 293 | ret = wait_for_completion_timeout(&nss_ipv4_pvt.complete, msecs_to_jiffies(NSS_IPV4_TX_MSG_TIMEOUT)); |
| 294 | if (!ret) { |
| 295 | nss_warning("%p: IPv4 tx sync failed due to timeout\n", nss_ctx); |
| 296 | nss_ipv4_pvt.response = NSS_TX_FAILURE; |
| 297 | } |
| 298 | |
| 299 | status = nss_ipv4_pvt.response; |
| 300 | up(&nss_ipv4_pvt.sem); |
| 301 | return status; |
| 302 | } |
| 303 | EXPORT_SYMBOL(nss_ipv4_tx_sync); |
| 304 | |
| 305 | /* |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 306 | ********************************** |
| 307 | Register/Unregister/Miscellaneous APIs |
| 308 | ********************************** |
| 309 | */ |
| 310 | |
| 311 | /* |
| 312 | * nss_ipv4_notify_register() |
| 313 | * Register to received IPv4 events. |
| 314 | * |
| 315 | * NOTE: Do we want to pass an nss_ctx here so that we can register for ipv4 on any core? |
| 316 | */ |
| 317 | struct nss_ctx_instance *nss_ipv4_notify_register(nss_ipv4_msg_callback_t cb, void *app_data) |
| 318 | { |
| 319 | /* |
| 320 | * TODO: We need to have a new array in support of the new API |
| 321 | * TODO: If we use a per-context array, we would move the array into nss_ctx based. |
| 322 | */ |
| 323 | nss_top_main.ipv4_callback = cb; |
Abhishek Rastogi | e11f47b | 2014-04-04 18:43:32 +0530 | [diff] [blame] | 324 | nss_top_main.ipv4_ctx = app_data; |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 325 | return &nss_top_main.nss[nss_top_main.ipv4_handler_id]; |
| 326 | } |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 327 | EXPORT_SYMBOL(nss_ipv4_notify_register); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 328 | |
| 329 | /* |
| 330 | * nss_ipv4_notify_unregister() |
| 331 | * Unregister to received IPv4 events. |
| 332 | * |
| 333 | * NOTE: Do we want to pass an nss_ctx here so that we can register for ipv4 on any core? |
| 334 | */ |
| 335 | void nss_ipv4_notify_unregister(void) |
| 336 | { |
| 337 | nss_top_main.ipv4_callback = NULL; |
| 338 | } |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 339 | EXPORT_SYMBOL(nss_ipv4_notify_unregister); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 340 | |
| 341 | /* |
Suruchi Agarwal | 611ecd0 | 2016-08-04 15:54:35 -0700 | [diff] [blame] | 342 | * nss_ipv4_conn_sync_many_notify_register() |
| 343 | * Register to receive IPv4 conn_sync_many message response. |
| 344 | */ |
| 345 | void nss_ipv4_conn_sync_many_notify_register(nss_ipv4_msg_callback_t cb) |
| 346 | { |
| 347 | nss_ipv4_conn_sync_many_msg_cb = cb; |
| 348 | } |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 349 | EXPORT_SYMBOL(nss_ipv4_conn_sync_many_notify_register); |
Suruchi Agarwal | 611ecd0 | 2016-08-04 15:54:35 -0700 | [diff] [blame] | 350 | |
| 351 | /* |
| 352 | * nss_ipv4_conn_sync_many_notify_unregister() |
| 353 | * Unregister to receive IPv4 conn_sync_many message response. |
| 354 | */ |
| 355 | void nss_ipv4_conn_sync_many_notify_unregister(void) |
| 356 | { |
| 357 | nss_ipv4_conn_sync_many_msg_cb = NULL; |
| 358 | } |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 359 | EXPORT_SYMBOL(nss_ipv4_conn_sync_many_notify_unregister); |
Suruchi Agarwal | 611ecd0 | 2016-08-04 15:54:35 -0700 | [diff] [blame] | 360 | |
| 361 | /* |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 362 | * nss_ipv4_get_mgr() |
| 363 | * |
| 364 | * TODO: This only suppports a single ipv4, do we ever want to support more? |
| 365 | */ |
| 366 | struct nss_ctx_instance *nss_ipv4_get_mgr(void) |
| 367 | { |
| 368 | return (void *)&nss_top_main.nss[nss_top_main.ipv4_handler_id]; |
| 369 | } |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 370 | EXPORT_SYMBOL(nss_ipv4_get_mgr); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 371 | |
| 372 | /* |
| 373 | * nss_ipv4_register_handler() |
| 374 | * Register our handler to receive messages for this interface |
| 375 | */ |
Sol Kavy | 2783c07 | 2014-04-05 12:53:13 -0700 | [diff] [blame] | 376 | void nss_ipv4_register_handler(void) |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 377 | { |
Thomas Wu | 91f4bdf | 2017-06-09 12:03:02 -0700 | [diff] [blame] | 378 | struct nss_ctx_instance *nss_ctx = nss_ipv4_get_mgr(); |
| 379 | |
| 380 | if (nss_core_register_handler(nss_ctx, NSS_IPV4_RX_INTERFACE, nss_ipv4_rx_msg_handler, NULL) != NSS_CORE_STATUS_SUCCESS) { |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 381 | nss_warning("IPv4 handler failed to register"); |
| 382 | } |
Yu Huang | 8c10708 | 2017-07-24 14:58:26 -0700 | [diff] [blame] | 383 | |
| 384 | nss_ipv4_stats_dentry_create(); |
Thomas Wu | 6825035 | 2014-04-02 18:59:40 -0700 | [diff] [blame] | 385 | } |
| 386 | |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 387 | /* |
| 388 | * nss_ipv4_conn_cfg_process_callback() |
| 389 | * Call back function for the ipv4 connection configure process |
| 390 | */ |
| 391 | static void nss_ipv4_conn_cfg_process_callback(void *app_data, struct nss_ipv4_msg *nim) |
| 392 | { |
| 393 | struct nss_ipv4_rule_conn_cfg_msg *nirccm = &nim->msg.rule_conn_cfg; |
| 394 | struct nss_ctx_instance *nss_ctx __maybe_unused = nss_ipv4_get_mgr(); |
| 395 | |
| 396 | if (nim->cm.response != NSS_CMN_RESPONSE_ACK) { |
| 397 | nss_warning("%p: IPv4 connection configuration failed with error: %d\n", nss_ctx, nim->cm.error); |
Stephen Wang | 0143369 | 2017-10-30 14:45:11 -0700 | [diff] [blame] | 398 | nss_core_update_max_ipv4_conn(NSS_FW_DEFAULT_NUM_CONN); |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 399 | nss_ipv4_free_conn_tables(); |
| 400 | return; |
| 401 | } |
| 402 | |
| 403 | nss_ipv4_conn_cfg = ntohl(nirccm->num_conn); |
| 404 | nss_warning("%p: IPv4 connection configuration success: %d\n", nss_ctx, nim->cm.error); |
| 405 | } |
| 406 | |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 407 | /* |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 408 | * nss_ipv4_conn_cfg_process() |
| 409 | * Process request to configure number of ipv4 connections |
| 410 | */ |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 411 | static int nss_ipv4_conn_cfg_process(struct nss_ctx_instance *nss_ctx, int conn) |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 412 | { |
| 413 | struct nss_ipv4_msg nim; |
| 414 | struct nss_ipv4_rule_conn_cfg_msg *nirccm; |
| 415 | nss_tx_status_t nss_tx_status; |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 416 | |
| 417 | if ((!nss_ipv4_ct_info.ce_table_size) || (!nss_ipv4_ct_info.cme_table_size)) { |
| 418 | nss_warning("%p: connection entry or connection match entry table size not available\n", |
| 419 | nss_ctx); |
| 420 | return -EINVAL; |
| 421 | } |
| 422 | |
| 423 | nss_info("%p: IPv4 supported connections: %d\n", nss_ctx, conn); |
| 424 | |
| 425 | nss_ipv4_ct_info.ce_mem = __get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO, |
| 426 | get_order(nss_ipv4_ct_info.ce_table_size)); |
| 427 | if (!nss_ipv4_ct_info.ce_mem) { |
| 428 | nss_warning("%p: Memory allocation failed for IPv4 Connections: %d\n", |
| 429 | nss_ctx, |
| 430 | conn); |
| 431 | goto fail; |
| 432 | } |
| 433 | |
| 434 | nss_ipv4_ct_info.cme_mem = __get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO, |
| 435 | get_order(nss_ipv4_ct_info.cme_table_size)); |
| 436 | if (!nss_ipv4_ct_info.ce_mem) { |
| 437 | nss_warning("%p: Memory allocation failed for IPv4 Connections: %d\n", |
| 438 | nss_ctx, |
| 439 | conn); |
| 440 | goto fail; |
| 441 | } |
| 442 | |
| 443 | memset(&nim, 0, sizeof(struct nss_ipv4_msg)); |
| 444 | nss_ipv4_msg_init(&nim, NSS_IPV4_RX_INTERFACE, NSS_IPV4_TX_CONN_CFG_RULE_MSG, |
| 445 | sizeof(struct nss_ipv4_rule_conn_cfg_msg), nss_ipv4_conn_cfg_process_callback, NULL); |
| 446 | |
| 447 | nirccm = &nim.msg.rule_conn_cfg; |
| 448 | nirccm->num_conn = htonl(conn); |
Suruchi Agarwal | 8c9e716 | 2017-08-17 15:58:40 -0700 | [diff] [blame] | 449 | nirccm->ce_mem = dma_map_single(nss_ctx->dev, (void *)nss_ipv4_ct_info.ce_mem, nss_ipv4_ct_info.ce_table_size, DMA_TO_DEVICE); |
| 450 | if (unlikely(dma_mapping_error(nss_ctx->dev, nirccm->ce_mem))) { |
| 451 | nss_warning("%p: DMA mapping failed for virtual address = %p", nss_ctx, (void *)nss_ipv4_ct_info.ce_mem); |
| 452 | goto fail; |
| 453 | } |
| 454 | |
| 455 | nirccm->cme_mem = dma_map_single(nss_ctx->dev, (void *)nss_ipv4_ct_info.cme_mem, nss_ipv4_ct_info.cme_table_size, DMA_TO_DEVICE); |
| 456 | if (unlikely(dma_mapping_error(nss_ctx->dev, nirccm->cme_mem))) { |
| 457 | nss_warning("%p: DMA mapping failed for virtual address = %p", nss_ctx, (void *)nss_ipv4_ct_info.cme_mem); |
| 458 | goto fail; |
| 459 | } |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 460 | |
| 461 | nss_tx_status = nss_ipv4_tx(nss_ctx, &nim); |
| 462 | if (nss_tx_status != NSS_TX_SUCCESS) { |
| 463 | nss_warning("%p: nss_tx error setting IPv4 Connections: %d\n", |
| 464 | nss_ctx, |
| 465 | conn); |
| 466 | goto fail; |
| 467 | } |
| 468 | |
| 469 | return 0; |
| 470 | |
| 471 | fail: |
| 472 | nss_ipv4_free_conn_tables(); |
| 473 | return -EINVAL;; |
| 474 | } |
| 475 | |
| 476 | /* |
| 477 | * nss_ipv4_update_conn_count_callback() |
| 478 | * Callback function for the ipv4 get connection info message. |
| 479 | */ |
| 480 | static void nss_ipv4_update_conn_count_callback(void *app_data, struct nss_ipv4_msg *nim) |
| 481 | { |
| 482 | struct nss_ipv4_rule_conn_get_table_size_msg *nircgts = &nim->msg.size; |
| 483 | struct nss_ctx_instance *nss_ctx = nss_ipv4_get_mgr(); |
| 484 | |
| 485 | if (nim->cm.response != NSS_CMN_RESPONSE_ACK) { |
| 486 | nss_warning("%p: IPv4 fetch connection info failed with error: %d\n", nss_ctx, nim->cm.error); |
Stephen Wang | 0143369 | 2017-10-30 14:45:11 -0700 | [diff] [blame] | 487 | nss_core_update_max_ipv4_conn(NSS_FW_DEFAULT_NUM_CONN); |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 488 | return; |
| 489 | } |
| 490 | |
| 491 | nss_info("IPv4 get connection info success\n"); |
| 492 | |
| 493 | nss_ipv4_ct_info.ce_table_size = ntohl(nircgts->ce_table_size); |
| 494 | nss_ipv4_ct_info.cme_table_size = ntohl(nircgts->cme_table_size); |
| 495 | |
| 496 | if (nss_ipv4_conn_cfg_process(nss_ctx, ntohl(nircgts->num_conn)) != 0) { |
| 497 | nss_warning("%p: IPv4 connection entry or connection match entry table size\ |
| 498 | not available\n", nss_ctx); |
| 499 | } |
| 500 | |
| 501 | return; |
| 502 | } |
| 503 | |
| 504 | /* |
| 505 | * nss_ipv4_update_conn_count() |
| 506 | * Sets the maximum number of IPv4 connections. |
| 507 | * |
| 508 | * It first gets the connection tables size information from NSS FW |
| 509 | * and then configures the connections in NSS FW. |
| 510 | */ |
| 511 | int nss_ipv4_update_conn_count(int ipv4_num_conn) |
| 512 | { |
| 513 | struct nss_ctx_instance *nss_ctx = nss_ipv4_get_mgr(); |
| 514 | struct nss_ipv4_msg nim; |
| 515 | struct nss_ipv4_rule_conn_get_table_size_msg *nircgts; |
| 516 | nss_tx_status_t nss_tx_status; |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 517 | uint32_t sum_of_conn; |
| 518 | |
| 519 | /* |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 520 | * By default, NSS FW is configured with default number of connections. |
| 521 | */ |
Stephen Wang | 0143369 | 2017-10-30 14:45:11 -0700 | [diff] [blame] | 522 | if (ipv4_num_conn == NSS_FW_DEFAULT_NUM_CONN) { |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 523 | nss_info("%p: Default number of connections (%d) already configured\n", nss_ctx, ipv4_num_conn); |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | /* |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 528 | * The input should be multiple of 1024. |
| 529 | * Input for ipv4 and ipv6 sum together should not exceed 8k |
| 530 | * Min. value should be at least 256 connections. This is the |
| 531 | * minimum connections we will support for each of them. |
| 532 | */ |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 533 | sum_of_conn = ipv4_num_conn + nss_ipv6_conn_cfg; |
| 534 | if ((ipv4_num_conn & NSS_NUM_CONN_QUANTA_MASK) || |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 535 | (sum_of_conn > NSS_MAX_TOTAL_NUM_CONN_IPV4_IPV6) || |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 536 | (ipv4_num_conn < NSS_MIN_NUM_CONN)) { |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 537 | nss_warning("%p: input supported connections (%d) does not adhere\ |
| 538 | specifications\n1) not multiple of 1024,\n2) is less than \ |
| 539 | min val: %d, OR\n IPv4/6 total exceeds %d\n", |
| 540 | nss_ctx, |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 541 | ipv4_num_conn, |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 542 | NSS_MIN_NUM_CONN, |
| 543 | NSS_MAX_TOTAL_NUM_CONN_IPV4_IPV6); |
| 544 | return -EINVAL; |
| 545 | } |
| 546 | |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 547 | memset(&nim, 0, sizeof(struct nss_ipv4_msg)); |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 548 | nss_ipv4_msg_init(&nim, NSS_IPV4_RX_INTERFACE, NSS_IPV4_TX_CONN_TABLE_SIZE_MSG, |
| 549 | sizeof(struct nss_ipv4_rule_conn_get_table_size_msg), nss_ipv4_update_conn_count_callback, NULL); |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 550 | |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 551 | nircgts = &nim.msg.size; |
| 552 | nircgts->num_conn = htonl(ipv4_num_conn); |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 553 | nss_tx_status = nss_ipv4_tx(nss_ctx, &nim); |
| 554 | |
| 555 | if (nss_tx_status != NSS_TX_SUCCESS) { |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 556 | nss_warning("%p: Send fetch connection info message failed\n", nss_ctx); |
| 557 | return -EINVAL; |
Tushar Mathur | a3c1893 | 2015-08-24 20:27:21 +0530 | [diff] [blame] | 558 | } |
| 559 | |
| 560 | return 0; |
| 561 | } |
| 562 | |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 563 | /* |
Suruchi Agarwal | cdcb5b4 | 2017-07-06 11:08:22 -0700 | [diff] [blame] | 564 | * nss_ipv4_free_conn_tables() |
| 565 | * Frees memory allocated for connection tables |
| 566 | */ |
| 567 | void nss_ipv4_free_conn_tables(void) |
| 568 | { |
| 569 | if (nss_ipv4_ct_info.ce_mem) { |
| 570 | free_pages(nss_ipv4_ct_info.ce_mem, get_order(nss_ipv4_ct_info.ce_table_size)); |
| 571 | } |
| 572 | |
| 573 | if (nss_ipv4_ct_info.cme_mem) { |
| 574 | free_pages(nss_ipv4_ct_info.cme_mem, get_order(nss_ipv4_ct_info.cme_table_size)); |
| 575 | } |
| 576 | |
| 577 | memset(&nss_ipv4_ct_info, 0, sizeof(struct nss_ipv4_conn_table_info)); |
| 578 | return; |
| 579 | } |
| 580 | |
| 581 | /* |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 582 | * nss_ipv4_accel_mode_cfg_handler() |
| 583 | * Configure acceleration mode for IPv4 |
| 584 | */ |
| 585 | static int nss_ipv4_accel_mode_cfg_handler(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) |
| 586 | { |
| 587 | struct nss_top_instance *nss_top = &nss_top_main; |
| 588 | struct nss_ctx_instance *nss_ctx = &nss_top->nss[0]; |
| 589 | struct nss_ipv4_msg nim; |
| 590 | struct nss_ipv4_accel_mode_cfg_msg *nipcm; |
| 591 | nss_tx_status_t nss_tx_status; |
| 592 | int ret = NSS_FAILURE; |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 593 | int current_value; |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 594 | |
| 595 | /* |
| 596 | * Take snap shot of current value |
| 597 | */ |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 598 | current_value = nss_ipv4_accel_mode_cfg; |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 599 | |
| 600 | /* |
| 601 | * Write the variable with user input |
| 602 | */ |
| 603 | ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
| 604 | if (ret || (!write)) { |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 605 | return ret; |
| 606 | } |
| 607 | |
| 608 | memset(&nim, 0, sizeof(struct nss_ipv4_msg)); |
| 609 | nss_ipv4_msg_init(&nim, NSS_IPV4_RX_INTERFACE, NSS_IPV4_TX_ACCEL_MODE_CFG_MSG, |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 610 | sizeof(struct nss_ipv4_accel_mode_cfg_msg), NULL, NULL); |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 611 | |
| 612 | nipcm = &nim.msg.accel_mode_cfg; |
| 613 | nipcm->mode = htonl(nss_ipv4_accel_mode_cfg); |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 614 | |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 615 | nss_tx_status = nss_ipv4_tx_sync(nss_ctx, &nim); |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 616 | if (nss_tx_status != NSS_TX_SUCCESS) { |
| 617 | nss_warning("%p: Send acceleration mode message failed\n", nss_ctx); |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 618 | nss_ipv4_accel_mode_cfg = current_value; |
| 619 | return -EIO; |
| 620 | } |
| 621 | |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | /* |
| 626 | * nss_ipv4_dscp_map_cfg_handler() |
| 627 | * Sysctl handler for dscp/pri mappings. |
| 628 | */ |
| 629 | static int nss_ipv4_dscp_map_cfg_handler(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) |
| 630 | { |
| 631 | struct nss_top_instance *nss_top = &nss_top_main; |
| 632 | struct nss_ctx_instance *nss_ctx = &nss_top->nss[0]; |
| 633 | struct nss_dscp_map_parse out; |
| 634 | struct nss_ipv4_msg nim; |
| 635 | struct nss_ipv4_dscp2pri_cfg_msg *nipd2p; |
| 636 | nss_tx_status_t status; |
| 637 | int ret; |
| 638 | |
| 639 | if (!write) { |
| 640 | return nss_dscp_map_print(ctl, buffer, lenp, ppos, mapping); |
| 641 | } |
| 642 | |
| 643 | ret = nss_dscp_map_parse(ctl, buffer, lenp, ppos, &out); |
| 644 | if (ret) { |
| 645 | nss_warning("failed to parse dscp mapping:%d\n", ret); |
| 646 | nss_ipv4_dscp_map_usage(); |
| 647 | return ret; |
| 648 | } |
| 649 | |
| 650 | if (out.action >= NSS_IPV4_DSCP_MAP_ACTION_MAX) { |
| 651 | nss_warning("invalid action value: %d\n", out.action); |
| 652 | nss_ipv4_dscp_map_usage(); |
| 653 | return -EINVAL; |
| 654 | } |
| 655 | |
| 656 | memset(&nim, 0, sizeof(struct nss_ipv4_msg)); |
| 657 | nss_ipv4_msg_init(&nim, NSS_IPV4_RX_INTERFACE, NSS_IPV4_TX_DSCP2PRI_CFG_MSG, |
| 658 | sizeof(struct nss_ipv4_dscp2pri_cfg_msg), NULL, NULL); |
| 659 | |
| 660 | nipd2p = &nim.msg.dscp2pri_cfg; |
| 661 | nipd2p->dscp = out.dscp; |
| 662 | nipd2p->priority = out.priority; |
| 663 | |
| 664 | status = nss_ipv4_tx_sync(nss_ctx, &nim); |
| 665 | if (status != NSS_TX_SUCCESS) { |
| 666 | nss_warning("%p: ipv4 dscp2pri config message failed\n", nss_ctx); |
| 667 | return -EFAULT; |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | /* |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 671 | * NSS firmware acknowleged the configuration, so update the mapping |
| 672 | * table on HOST side as well. |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 673 | */ |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 674 | mapping[out.dscp].action = out.action; |
| 675 | mapping[out.dscp].priority = out.priority; |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 676 | |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 677 | return 0; |
Stephen Wang | 0a2756a | 2016-08-04 15:52:47 -0700 | [diff] [blame] | 678 | } |
| 679 | |
Stephen Wang | 52e6d34 | 2016-03-29 15:02:33 -0700 | [diff] [blame] | 680 | static struct ctl_table nss_ipv4_table[] = { |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 681 | { |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 682 | .procname = "ipv4_accel_mode", |
| 683 | .data = &nss_ipv4_accel_mode_cfg, |
| 684 | .maxlen = sizeof(int), |
| 685 | .mode = 0644, |
| 686 | .proc_handler = &nss_ipv4_accel_mode_cfg_handler, |
| 687 | }, |
| 688 | { |
| 689 | .procname = "ipv4_dscp_map", |
| 690 | .data = &mapping[NSS_DSCP_MAP_ARRAY_SIZE], |
| 691 | .maxlen = sizeof(struct nss_dscp_map_entry), |
| 692 | .mode = 0644, |
| 693 | .proc_handler = &nss_ipv4_dscp_map_cfg_handler, |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 694 | }, |
| 695 | { } |
| 696 | }; |
| 697 | |
Stephen Wang | 52e6d34 | 2016-03-29 15:02:33 -0700 | [diff] [blame] | 698 | static struct ctl_table nss_ipv4_dir[] = { |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 699 | { |
Vijay Dewangan | 4861f4e | 2014-10-14 16:56:35 -0700 | [diff] [blame] | 700 | .procname = "ipv4cfg", |
| 701 | .mode = 0555, |
| 702 | .child = nss_ipv4_table, |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 703 | }, |
| 704 | { } |
| 705 | }; |
| 706 | |
Stephen Wang | 52e6d34 | 2016-03-29 15:02:33 -0700 | [diff] [blame] | 707 | static struct ctl_table nss_ipv4_root_dir[] = { |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 708 | { |
| 709 | .procname = "nss", |
| 710 | .mode = 0555, |
| 711 | .child = nss_ipv4_dir, |
| 712 | }, |
| 713 | { } |
| 714 | }; |
| 715 | |
Stephen Wang | 52e6d34 | 2016-03-29 15:02:33 -0700 | [diff] [blame] | 716 | static struct ctl_table nss_ipv4_root[] = { |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 717 | { |
| 718 | .procname = "dev", |
| 719 | .mode = 0555, |
| 720 | .child = nss_ipv4_root_dir, |
| 721 | }, |
| 722 | { } |
| 723 | }; |
| 724 | |
| 725 | static struct ctl_table_header *nss_ipv4_header; |
| 726 | |
| 727 | /* |
| 728 | * nss_ipv4_register_sysctl() |
| 729 | * Register sysctl specific to ipv4 |
| 730 | */ |
| 731 | void nss_ipv4_register_sysctl(void) |
| 732 | { |
Sakthi Vignesh Radhakrishnan | 8d02a2d | 2017-09-06 14:38:59 -0700 | [diff] [blame] | 733 | sema_init(&nss_ipv4_pvt.sem, 1); |
| 734 | init_completion(&nss_ipv4_pvt.complete); |
Stephen Wang | 49b474b | 2016-03-25 10:40:30 -0700 | [diff] [blame] | 735 | |
Vijay Dewangan | 9db1875 | 2014-09-15 16:25:01 -0700 | [diff] [blame] | 736 | /* |
| 737 | * Register sysctl table. |
| 738 | */ |
| 739 | nss_ipv4_header = register_sysctl_table(nss_ipv4_root); |
| 740 | } |
| 741 | |
| 742 | /* |
| 743 | * nss_ipv4_unregister_sysctl() |
| 744 | * Unregister sysctl specific to ipv4 |
| 745 | */ |
| 746 | void nss_ipv4_unregister_sysctl(void) |
| 747 | { |
| 748 | /* |
| 749 | * Unregister sysctl table. |
| 750 | */ |
| 751 | if (nss_ipv4_header) { |
| 752 | unregister_sysctl_table(nss_ipv4_header); |
| 753 | } |
| 754 | } |
| 755 | |
Sundarajan Srinivasan | 02e6c2b | 2014-10-06 11:51:12 -0700 | [diff] [blame] | 756 | /* |
| 757 | * nss_ipv4_msg_init() |
| 758 | * Initialize IPv4 message. |
| 759 | */ |
| 760 | void nss_ipv4_msg_init(struct nss_ipv4_msg *nim, uint16_t if_num, uint32_t type, uint32_t len, |
Sundarajan Srinivasan | 30a53d4 | 2015-01-30 10:52:08 -0800 | [diff] [blame] | 761 | nss_ipv4_msg_callback_t cb, void *app_data) |
Sundarajan Srinivasan | 02e6c2b | 2014-10-06 11:51:12 -0700 | [diff] [blame] | 762 | { |
| 763 | nss_cmn_msg_init(&nim->cm, if_num, type, len, (void *)cb, app_data); |
| 764 | } |
Sundarajan Srinivasan | 02e6c2b | 2014-10-06 11:51:12 -0700 | [diff] [blame] | 765 | EXPORT_SYMBOL(nss_ipv4_msg_init); |