kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * cxgb4i.c: Chelsio T4 iSCSI driver. |
| 3 | * |
| 4 | * Copyright (c) 2010 Chelsio Communications, Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation. |
| 9 | * |
| 10 | * Written by: Karen Xie (kxie@chelsio.com) |
| 11 | * Rakesh Ranjan (rranjan@chelsio.com) |
| 12 | */ |
| 13 | |
| 14 | #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ |
| 15 | |
| 16 | #include <linux/version.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/moduleparam.h> |
| 19 | #include <scsi/scsi_host.h> |
| 20 | #include <net/tcp.h> |
| 21 | #include <net/dst.h> |
| 22 | #include <linux/netdevice.h> |
| 23 | |
| 24 | #include "t4_msg.h" |
| 25 | #include "cxgb4.h" |
| 26 | #include "cxgb4_uld.h" |
| 27 | #include "t4fw_api.h" |
| 28 | #include "l2t.h" |
| 29 | #include "cxgb4i.h" |
| 30 | |
| 31 | static unsigned int dbg_level; |
| 32 | |
| 33 | #include "../libcxgbi.h" |
| 34 | |
| 35 | #define DRV_MODULE_NAME "cxgb4i" |
| 36 | #define DRV_MODULE_DESC "Chelsio T4 iSCSI Driver" |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 37 | #define DRV_MODULE_VERSION "0.9.1" |
| 38 | #define DRV_MODULE_RELDATE "Aug. 2010" |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 39 | |
| 40 | static char version[] = |
| 41 | DRV_MODULE_DESC " " DRV_MODULE_NAME |
| 42 | " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; |
| 43 | |
| 44 | MODULE_AUTHOR("Chelsio Communications, Inc."); |
| 45 | MODULE_DESCRIPTION(DRV_MODULE_DESC); |
| 46 | MODULE_VERSION(DRV_MODULE_VERSION); |
| 47 | MODULE_LICENSE("GPL"); |
| 48 | |
| 49 | module_param(dbg_level, uint, 0644); |
| 50 | MODULE_PARM_DESC(dbg_level, "Debug flag (default=0)"); |
| 51 | |
| 52 | static int cxgb4i_rcv_win = 256 * 1024; |
| 53 | module_param(cxgb4i_rcv_win, int, 0644); |
| 54 | MODULE_PARM_DESC(cxgb4i_rcv_win, "TCP reveive window in bytes"); |
| 55 | |
| 56 | static int cxgb4i_snd_win = 128 * 1024; |
| 57 | module_param(cxgb4i_snd_win, int, 0644); |
| 58 | MODULE_PARM_DESC(cxgb4i_snd_win, "TCP send window in bytes"); |
| 59 | |
| 60 | static int cxgb4i_rx_credit_thres = 10 * 1024; |
| 61 | module_param(cxgb4i_rx_credit_thres, int, 0644); |
| 62 | MODULE_PARM_DESC(cxgb4i_rx_credit_thres, |
| 63 | "RX credits return threshold in bytes (default=10KB)"); |
| 64 | |
| 65 | static unsigned int cxgb4i_max_connect = (8 * 1024); |
| 66 | module_param(cxgb4i_max_connect, uint, 0644); |
| 67 | MODULE_PARM_DESC(cxgb4i_max_connect, "Maximum number of connections"); |
| 68 | |
| 69 | static unsigned short cxgb4i_sport_base = 20000; |
| 70 | module_param(cxgb4i_sport_base, ushort, 0644); |
| 71 | MODULE_PARM_DESC(cxgb4i_sport_base, "Starting port number (default 20000)"); |
| 72 | |
| 73 | typedef void (*cxgb4i_cplhandler_func)(struct cxgbi_device *, struct sk_buff *); |
| 74 | |
| 75 | static void *t4_uld_add(const struct cxgb4_lld_info *); |
| 76 | static int t4_uld_rx_handler(void *, const __be64 *, const struct pkt_gl *); |
| 77 | static int t4_uld_state_change(void *, enum cxgb4_state state); |
| 78 | |
| 79 | static const struct cxgb4_uld_info cxgb4i_uld_info = { |
| 80 | .name = DRV_MODULE_NAME, |
| 81 | .add = t4_uld_add, |
| 82 | .rx_handler = t4_uld_rx_handler, |
| 83 | .state_change = t4_uld_state_change, |
| 84 | }; |
| 85 | |
| 86 | static struct scsi_host_template cxgb4i_host_template = { |
| 87 | .module = THIS_MODULE, |
| 88 | .name = DRV_MODULE_NAME, |
| 89 | .proc_name = DRV_MODULE_NAME, |
| 90 | .can_queue = CXGB4I_SCSI_HOST_QDEPTH, |
| 91 | .queuecommand = iscsi_queuecommand, |
| 92 | .change_queue_depth = iscsi_change_queue_depth, |
| 93 | .sg_tablesize = SG_ALL, |
| 94 | .max_sectors = 0xFFFF, |
| 95 | .cmd_per_lun = ISCSI_DEF_CMD_PER_LUN, |
| 96 | .eh_abort_handler = iscsi_eh_abort, |
| 97 | .eh_device_reset_handler = iscsi_eh_device_reset, |
| 98 | .eh_target_reset_handler = iscsi_eh_recover_target, |
| 99 | .target_alloc = iscsi_target_alloc, |
| 100 | .use_clustering = DISABLE_CLUSTERING, |
| 101 | .this_id = -1, |
| 102 | }; |
| 103 | |
| 104 | static struct iscsi_transport cxgb4i_iscsi_transport = { |
| 105 | .owner = THIS_MODULE, |
| 106 | .name = DRV_MODULE_NAME, |
| 107 | .caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST | |
| 108 | CAP_DATADGST | CAP_DIGEST_OFFLOAD | |
Mike Christie | fdafd4d | 2011-02-16 15:04:32 -0600 | [diff] [blame] | 109 | CAP_PADDING_OFFLOAD | CAP_TEXT_NEGO, |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 110 | .param_mask = ISCSI_MAX_RECV_DLENGTH | ISCSI_MAX_XMIT_DLENGTH | |
| 111 | ISCSI_HDRDGST_EN | ISCSI_DATADGST_EN | |
| 112 | ISCSI_INITIAL_R2T_EN | ISCSI_MAX_R2T | |
| 113 | ISCSI_IMM_DATA_EN | ISCSI_FIRST_BURST | |
| 114 | ISCSI_MAX_BURST | ISCSI_PDU_INORDER_EN | |
| 115 | ISCSI_DATASEQ_INORDER_EN | ISCSI_ERL | |
| 116 | ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | |
| 117 | ISCSI_EXP_STATSN | ISCSI_PERSISTENT_PORT | |
| 118 | ISCSI_PERSISTENT_ADDRESS | |
| 119 | ISCSI_TARGET_NAME | ISCSI_TPGT | |
| 120 | ISCSI_USERNAME | ISCSI_PASSWORD | |
| 121 | ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN | |
| 122 | ISCSI_FAST_ABORT | ISCSI_ABORT_TMO | |
| 123 | ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO | |
| 124 | ISCSI_PING_TMO | ISCSI_RECV_TMO | |
| 125 | ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME, |
| 126 | .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS | |
| 127 | ISCSI_HOST_INITIATOR_NAME | |
| 128 | ISCSI_HOST_NETDEV_NAME, |
| 129 | .get_host_param = cxgbi_get_host_param, |
| 130 | .set_host_param = cxgbi_set_host_param, |
| 131 | /* session management */ |
| 132 | .create_session = cxgbi_create_session, |
| 133 | .destroy_session = cxgbi_destroy_session, |
| 134 | .get_session_param = iscsi_session_get_param, |
| 135 | /* connection management */ |
| 136 | .create_conn = cxgbi_create_conn, |
| 137 | .bind_conn = cxgbi_bind_conn, |
| 138 | .destroy_conn = iscsi_tcp_conn_teardown, |
| 139 | .start_conn = iscsi_conn_start, |
| 140 | .stop_conn = iscsi_conn_stop, |
Mike Christie | c71b9b6 | 2011-02-16 15:04:38 -0600 | [diff] [blame] | 141 | .get_conn_param = iscsi_conn_get_param, |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 142 | .set_param = cxgbi_set_conn_param, |
| 143 | .get_stats = cxgbi_get_conn_stats, |
| 144 | /* pdu xmit req from user space */ |
| 145 | .send_pdu = iscsi_conn_send_pdu, |
| 146 | /* task */ |
| 147 | .init_task = iscsi_tcp_task_init, |
| 148 | .xmit_task = iscsi_tcp_task_xmit, |
| 149 | .cleanup_task = cxgbi_cleanup_task, |
| 150 | /* pdu */ |
| 151 | .alloc_pdu = cxgbi_conn_alloc_pdu, |
| 152 | .init_pdu = cxgbi_conn_init_pdu, |
| 153 | .xmit_pdu = cxgbi_conn_xmit_pdu, |
| 154 | .parse_pdu_itt = cxgbi_parse_pdu_itt, |
| 155 | /* TCP connect/disconnect */ |
Mike Christie | c71b9b6 | 2011-02-16 15:04:38 -0600 | [diff] [blame] | 156 | .get_ep_param = cxgbi_get_ep_param, |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 157 | .ep_connect = cxgbi_ep_connect, |
| 158 | .ep_poll = cxgbi_ep_poll, |
| 159 | .ep_disconnect = cxgbi_ep_disconnect, |
| 160 | /* Error recovery timeout call */ |
| 161 | .session_recovery_timedout = iscsi_session_recovery_timedout, |
| 162 | }; |
| 163 | |
| 164 | static struct scsi_transport_template *cxgb4i_stt; |
| 165 | |
| 166 | /* |
| 167 | * CPL (Chelsio Protocol Language) defines a message passing interface between |
| 168 | * the host driver and Chelsio asic. |
| 169 | * The section below implments CPLs that related to iscsi tcp connection |
| 170 | * open/close/abort and data send/receive. |
| 171 | */ |
| 172 | #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) |
| 173 | #define RCV_BUFSIZ_MASK 0x3FFU |
| 174 | #define MAX_IMM_TX_PKT_LEN 128 |
| 175 | |
| 176 | static inline void set_queue(struct sk_buff *skb, unsigned int queue, |
| 177 | const struct cxgbi_sock *csk) |
| 178 | { |
| 179 | skb->queue_mapping = queue; |
| 180 | } |
| 181 | |
| 182 | static int push_tx_frames(struct cxgbi_sock *, int); |
| 183 | |
| 184 | /* |
| 185 | * is_ofld_imm - check whether a packet can be sent as immediate data |
| 186 | * @skb: the packet |
| 187 | * |
| 188 | * Returns true if a packet can be sent as an offload WR with immediate |
| 189 | * data. We currently use the same limit as for Ethernet packets. |
| 190 | */ |
| 191 | static inline int is_ofld_imm(const struct sk_buff *skb) |
| 192 | { |
| 193 | return skb->len <= (MAX_IMM_TX_PKT_LEN - |
| 194 | sizeof(struct fw_ofld_tx_data_wr)); |
| 195 | } |
| 196 | |
| 197 | static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb, |
| 198 | struct l2t_entry *e) |
| 199 | { |
| 200 | struct cpl_act_open_req *req; |
| 201 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); |
| 202 | unsigned long long opt0; |
| 203 | unsigned int opt2; |
| 204 | unsigned int qid_atid = ((unsigned int)csk->atid) | |
| 205 | (((unsigned int)csk->rss_qid) << 14); |
| 206 | |
| 207 | opt0 = KEEP_ALIVE(1) | |
| 208 | WND_SCALE(wscale) | |
| 209 | MSS_IDX(csk->mss_idx) | |
| 210 | L2T_IDX(((struct l2t_entry *)csk->l2t)->idx) | |
| 211 | TX_CHAN(csk->tx_chan) | |
| 212 | SMAC_SEL(csk->smac_idx) | |
| 213 | ULP_MODE(ULP_MODE_ISCSI) | |
| 214 | RCV_BUFSIZ(cxgb4i_rcv_win >> 10); |
| 215 | opt2 = RX_CHANNEL(0) | |
| 216 | RSS_QUEUE_VALID | |
| 217 | (1 << 20) | (1 << 22) | |
| 218 | RSS_QUEUE(csk->rss_qid); |
| 219 | |
| 220 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); |
| 221 | req = (struct cpl_act_open_req *)skb->head; |
| 222 | |
| 223 | INIT_TP_WR(req, 0); |
| 224 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, |
| 225 | qid_atid)); |
| 226 | req->local_port = csk->saddr.sin_port; |
| 227 | req->peer_port = csk->daddr.sin_port; |
| 228 | req->local_ip = csk->saddr.sin_addr.s_addr; |
| 229 | req->peer_ip = csk->daddr.sin_addr.s_addr; |
| 230 | req->opt0 = cpu_to_be64(opt0); |
| 231 | req->params = 0; |
| 232 | req->opt2 = cpu_to_be32(opt2); |
| 233 | |
| 234 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 235 | "csk 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", |
| 236 | csk, &req->local_ip, ntohs(req->local_port), |
| 237 | &req->peer_ip, ntohs(req->peer_port), |
| 238 | csk->atid, csk->rss_qid); |
| 239 | |
| 240 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); |
| 241 | } |
| 242 | |
| 243 | static void send_close_req(struct cxgbi_sock *csk) |
| 244 | { |
| 245 | struct sk_buff *skb = csk->cpl_close; |
| 246 | struct cpl_close_con_req *req = (struct cpl_close_con_req *)skb->head; |
| 247 | unsigned int tid = csk->tid; |
| 248 | |
| 249 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 250 | "csk 0x%p,%u,0x%lx, tid %u.\n", |
| 251 | csk, csk->state, csk->flags, csk->tid); |
| 252 | csk->cpl_close = NULL; |
| 253 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
| 254 | INIT_TP_WR(req, tid); |
| 255 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid)); |
| 256 | req->rsvd = 0; |
| 257 | |
| 258 | cxgbi_sock_skb_entail(csk, skb); |
| 259 | if (csk->state >= CTP_ESTABLISHED) |
| 260 | push_tx_frames(csk, 1); |
| 261 | } |
| 262 | |
| 263 | static void abort_arp_failure(void *handle, struct sk_buff *skb) |
| 264 | { |
| 265 | struct cxgbi_sock *csk = (struct cxgbi_sock *)handle; |
| 266 | struct cpl_abort_req *req; |
| 267 | |
| 268 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 269 | "csk 0x%p,%u,0x%lx, tid %u, abort.\n", |
| 270 | csk, csk->state, csk->flags, csk->tid); |
| 271 | req = (struct cpl_abort_req *)skb->data; |
| 272 | req->cmd = CPL_ABORT_NO_RST; |
| 273 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
| 274 | } |
| 275 | |
| 276 | static void send_abort_req(struct cxgbi_sock *csk) |
| 277 | { |
| 278 | struct cpl_abort_req *req; |
| 279 | struct sk_buff *skb = csk->cpl_abort_req; |
| 280 | |
| 281 | if (unlikely(csk->state == CTP_ABORTING) || !skb || !csk->cdev) |
| 282 | return; |
| 283 | cxgbi_sock_set_state(csk, CTP_ABORTING); |
| 284 | cxgbi_sock_set_flag(csk, CTPF_ABORT_RPL_PENDING); |
| 285 | cxgbi_sock_purge_write_queue(csk); |
| 286 | |
| 287 | csk->cpl_abort_req = NULL; |
| 288 | req = (struct cpl_abort_req *)skb->head; |
| 289 | set_queue(skb, CPL_PRIORITY_DATA, csk); |
| 290 | req->cmd = CPL_ABORT_SEND_RST; |
| 291 | t4_set_arp_err_handler(skb, csk, abort_arp_failure); |
| 292 | INIT_TP_WR(req, csk->tid); |
| 293 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, csk->tid)); |
| 294 | req->rsvd0 = htonl(csk->snd_nxt); |
| 295 | req->rsvd1 = !cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT); |
| 296 | |
| 297 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 298 | "csk 0x%p,%u,0x%lx,%u, snd_nxt %u, 0x%x.\n", |
| 299 | csk, csk->state, csk->flags, csk->tid, csk->snd_nxt, |
| 300 | req->rsvd1); |
| 301 | |
| 302 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); |
| 303 | } |
| 304 | |
| 305 | static void send_abort_rpl(struct cxgbi_sock *csk, int rst_status) |
| 306 | { |
| 307 | struct sk_buff *skb = csk->cpl_abort_rpl; |
| 308 | struct cpl_abort_rpl *rpl = (struct cpl_abort_rpl *)skb->head; |
| 309 | |
| 310 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 311 | "csk 0x%p,%u,0x%lx,%u, status %d.\n", |
| 312 | csk, csk->state, csk->flags, csk->tid, rst_status); |
| 313 | |
| 314 | csk->cpl_abort_rpl = NULL; |
| 315 | set_queue(skb, CPL_PRIORITY_DATA, csk); |
| 316 | INIT_TP_WR(rpl, csk->tid); |
| 317 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, csk->tid)); |
| 318 | rpl->cmd = rst_status; |
| 319 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
| 320 | } |
| 321 | |
| 322 | /* |
| 323 | * CPL connection rx data ack: host -> |
| 324 | * Send RX credits through an RX_DATA_ACK CPL message. Returns the number of |
| 325 | * credits sent. |
| 326 | */ |
| 327 | static u32 send_rx_credits(struct cxgbi_sock *csk, u32 credits) |
| 328 | { |
| 329 | struct sk_buff *skb; |
| 330 | struct cpl_rx_data_ack *req; |
| 331 | |
| 332 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
| 333 | "csk 0x%p,%u,0x%lx,%u, credit %u.\n", |
| 334 | csk, csk->state, csk->flags, csk->tid, credits); |
| 335 | |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 336 | skb = alloc_wr(sizeof(*req), 0, GFP_ATOMIC); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 337 | if (!skb) { |
| 338 | pr_info("csk 0x%p, credit %u, OOM.\n", csk, credits); |
| 339 | return 0; |
| 340 | } |
| 341 | req = (struct cpl_rx_data_ack *)skb->head; |
| 342 | |
| 343 | set_wr_txq(skb, CPL_PRIORITY_ACK, csk->port_id); |
| 344 | INIT_TP_WR(req, csk->tid); |
| 345 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, |
| 346 | csk->tid)); |
| 347 | req->credit_dack = cpu_to_be32(RX_CREDITS(credits) | RX_FORCE_ACK(1)); |
| 348 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
| 349 | return credits; |
| 350 | } |
| 351 | |
| 352 | /* |
| 353 | * sgl_len - calculates the size of an SGL of the given capacity |
| 354 | * @n: the number of SGL entries |
| 355 | * Calculates the number of flits needed for a scatter/gather list that |
| 356 | * can hold the given number of entries. |
| 357 | */ |
| 358 | static inline unsigned int sgl_len(unsigned int n) |
| 359 | { |
| 360 | n--; |
| 361 | return (3 * n) / 2 + (n & 1) + 2; |
| 362 | } |
| 363 | |
| 364 | /* |
| 365 | * calc_tx_flits_ofld - calculate # of flits for an offload packet |
| 366 | * @skb: the packet |
| 367 | * |
| 368 | * Returns the number of flits needed for the given offload packet. |
| 369 | * These packets are already fully constructed and no additional headers |
| 370 | * will be added. |
| 371 | */ |
| 372 | static inline unsigned int calc_tx_flits_ofld(const struct sk_buff *skb) |
| 373 | { |
| 374 | unsigned int flits, cnt; |
| 375 | |
| 376 | if (is_ofld_imm(skb)) |
| 377 | return DIV_ROUND_UP(skb->len, 8); |
| 378 | flits = skb_transport_offset(skb) / 8; |
| 379 | cnt = skb_shinfo(skb)->nr_frags; |
| 380 | if (skb->tail != skb->transport_header) |
| 381 | cnt++; |
| 382 | return flits + sgl_len(cnt); |
| 383 | } |
| 384 | |
| 385 | static inline void send_tx_flowc_wr(struct cxgbi_sock *csk) |
| 386 | { |
| 387 | struct sk_buff *skb; |
| 388 | struct fw_flowc_wr *flowc; |
| 389 | int flowclen, i; |
| 390 | |
| 391 | flowclen = 80; |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 392 | skb = alloc_wr(flowclen, 0, GFP_ATOMIC); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 393 | flowc = (struct fw_flowc_wr *)skb->head; |
| 394 | flowc->op_to_nparams = |
| 395 | htonl(FW_WR_OP(FW_FLOWC_WR) | FW_FLOWC_WR_NPARAMS(8)); |
| 396 | flowc->flowid_len16 = |
| 397 | htonl(FW_WR_LEN16(DIV_ROUND_UP(72, 16)) | |
| 398 | FW_WR_FLOWID(csk->tid)); |
| 399 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 400 | flowc->mnemval[0].val = htonl(csk->cdev->pfvf); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 401 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
| 402 | flowc->mnemval[1].val = htonl(csk->tx_chan); |
| 403 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; |
| 404 | flowc->mnemval[2].val = htonl(csk->tx_chan); |
| 405 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; |
| 406 | flowc->mnemval[3].val = htonl(csk->rss_qid); |
| 407 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; |
| 408 | flowc->mnemval[4].val = htonl(csk->snd_nxt); |
| 409 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; |
| 410 | flowc->mnemval[5].val = htonl(csk->rcv_nxt); |
| 411 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; |
| 412 | flowc->mnemval[6].val = htonl(cxgb4i_snd_win); |
| 413 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; |
| 414 | flowc->mnemval[7].val = htonl(csk->advmss); |
| 415 | flowc->mnemval[8].mnemonic = 0; |
| 416 | flowc->mnemval[8].val = 0; |
| 417 | for (i = 0; i < 9; i++) { |
| 418 | flowc->mnemval[i].r4[0] = 0; |
| 419 | flowc->mnemval[i].r4[1] = 0; |
| 420 | flowc->mnemval[i].r4[2] = 0; |
| 421 | } |
| 422 | set_queue(skb, CPL_PRIORITY_DATA, csk); |
| 423 | |
| 424 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 425 | "csk 0x%p, tid 0x%x, %u,%u,%u,%u,%u,%u,%u.\n", |
| 426 | csk, csk->tid, 0, csk->tx_chan, csk->rss_qid, |
| 427 | csk->snd_nxt, csk->rcv_nxt, cxgb4i_snd_win, |
| 428 | csk->advmss); |
| 429 | |
| 430 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
| 431 | } |
| 432 | |
| 433 | static inline void make_tx_data_wr(struct cxgbi_sock *csk, struct sk_buff *skb, |
| 434 | int dlen, int len, u32 credits, int compl) |
| 435 | { |
| 436 | struct fw_ofld_tx_data_wr *req; |
| 437 | unsigned int submode = cxgbi_skcb_ulp_mode(skb) & 3; |
| 438 | unsigned int wr_ulp_mode = 0; |
| 439 | |
| 440 | req = (struct fw_ofld_tx_data_wr *)__skb_push(skb, sizeof(*req)); |
| 441 | |
| 442 | if (is_ofld_imm(skb)) { |
| 443 | req->op_to_immdlen = htonl(FW_WR_OP(FW_OFLD_TX_DATA_WR) | |
| 444 | FW_WR_COMPL(1) | |
| 445 | FW_WR_IMMDLEN(dlen)); |
| 446 | req->flowid_len16 = htonl(FW_WR_FLOWID(csk->tid) | |
| 447 | FW_WR_LEN16(credits)); |
| 448 | } else { |
| 449 | req->op_to_immdlen = |
| 450 | cpu_to_be32(FW_WR_OP(FW_OFLD_TX_DATA_WR) | |
| 451 | FW_WR_COMPL(1) | |
| 452 | FW_WR_IMMDLEN(0)); |
| 453 | req->flowid_len16 = |
| 454 | cpu_to_be32(FW_WR_FLOWID(csk->tid) | |
| 455 | FW_WR_LEN16(credits)); |
| 456 | } |
| 457 | if (submode) |
| 458 | wr_ulp_mode = FW_OFLD_TX_DATA_WR_ULPMODE(ULP2_MODE_ISCSI) | |
| 459 | FW_OFLD_TX_DATA_WR_ULPSUBMODE(submode); |
| 460 | req->tunnel_to_proxy = htonl(wr_ulp_mode) | |
| 461 | FW_OFLD_TX_DATA_WR_SHOVE(skb_peek(&csk->write_queue) ? 0 : 1); |
| 462 | req->plen = htonl(len); |
| 463 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) |
| 464 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); |
| 465 | } |
| 466 | |
| 467 | static void arp_failure_skb_discard(void *handle, struct sk_buff *skb) |
| 468 | { |
| 469 | kfree_skb(skb); |
| 470 | } |
| 471 | |
| 472 | static int push_tx_frames(struct cxgbi_sock *csk, int req_completion) |
| 473 | { |
| 474 | int total_size = 0; |
| 475 | struct sk_buff *skb; |
| 476 | |
| 477 | if (unlikely(csk->state < CTP_ESTABLISHED || |
| 478 | csk->state == CTP_CLOSE_WAIT_1 || csk->state >= CTP_ABORTING)) { |
| 479 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK | |
| 480 | 1 << CXGBI_DBG_PDU_TX, |
| 481 | "csk 0x%p,%u,0x%lx,%u, in closing state.\n", |
| 482 | csk, csk->state, csk->flags, csk->tid); |
| 483 | return 0; |
| 484 | } |
| 485 | |
| 486 | while (csk->wr_cred && (skb = skb_peek(&csk->write_queue)) != NULL) { |
| 487 | int dlen = skb->len; |
| 488 | int len = skb->len; |
| 489 | unsigned int credits_needed; |
| 490 | |
| 491 | skb_reset_transport_header(skb); |
| 492 | if (is_ofld_imm(skb)) |
| 493 | credits_needed = DIV_ROUND_UP(dlen + |
| 494 | sizeof(struct fw_ofld_tx_data_wr), 16); |
| 495 | else |
| 496 | credits_needed = DIV_ROUND_UP(8*calc_tx_flits_ofld(skb) |
| 497 | + sizeof(struct fw_ofld_tx_data_wr), |
| 498 | 16); |
| 499 | |
| 500 | if (csk->wr_cred < credits_needed) { |
| 501 | log_debug(1 << CXGBI_DBG_PDU_TX, |
| 502 | "csk 0x%p, skb %u/%u, wr %d < %u.\n", |
| 503 | csk, skb->len, skb->data_len, |
| 504 | credits_needed, csk->wr_cred); |
| 505 | break; |
| 506 | } |
| 507 | __skb_unlink(skb, &csk->write_queue); |
| 508 | set_queue(skb, CPL_PRIORITY_DATA, csk); |
| 509 | skb->csum = credits_needed; |
| 510 | csk->wr_cred -= credits_needed; |
| 511 | csk->wr_una_cred += credits_needed; |
| 512 | cxgbi_sock_enqueue_wr(csk, skb); |
| 513 | |
| 514 | log_debug(1 << CXGBI_DBG_PDU_TX, |
| 515 | "csk 0x%p, skb %u/%u, wr %d, left %u, unack %u.\n", |
| 516 | csk, skb->len, skb->data_len, credits_needed, |
| 517 | csk->wr_cred, csk->wr_una_cred); |
| 518 | |
| 519 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) { |
| 520 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { |
| 521 | send_tx_flowc_wr(csk); |
| 522 | skb->csum += 5; |
| 523 | csk->wr_cred -= 5; |
| 524 | csk->wr_una_cred += 5; |
| 525 | } |
| 526 | len += cxgbi_ulp_extra_len(cxgbi_skcb_ulp_mode(skb)); |
| 527 | make_tx_data_wr(csk, skb, dlen, len, credits_needed, |
| 528 | req_completion); |
| 529 | csk->snd_nxt += len; |
| 530 | cxgbi_skcb_clear_flag(skb, SKCBF_TX_NEED_HDR); |
| 531 | } |
| 532 | total_size += skb->truesize; |
| 533 | t4_set_arp_err_handler(skb, csk, arp_failure_skb_discard); |
| 534 | |
| 535 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_TX, |
| 536 | "csk 0x%p,%u,0x%lx,%u, skb 0x%p, %u.\n", |
| 537 | csk, csk->state, csk->flags, csk->tid, skb, len); |
| 538 | |
| 539 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); |
| 540 | } |
| 541 | return total_size; |
| 542 | } |
| 543 | |
| 544 | static inline void free_atid(struct cxgbi_sock *csk) |
| 545 | { |
| 546 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
| 547 | |
| 548 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) { |
| 549 | cxgb4_free_atid(lldi->tids, csk->atid); |
| 550 | cxgbi_sock_clear_flag(csk, CTPF_HAS_ATID); |
| 551 | cxgbi_sock_put(csk); |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | static void do_act_establish(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 556 | { |
| 557 | struct cxgbi_sock *csk; |
| 558 | struct cpl_act_establish *req = (struct cpl_act_establish *)skb->data; |
| 559 | unsigned short tcp_opt = ntohs(req->tcp_opt); |
| 560 | unsigned int tid = GET_TID(req); |
| 561 | unsigned int atid = GET_TID_TID(ntohl(req->tos_atid)); |
| 562 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 563 | struct tid_info *t = lldi->tids; |
| 564 | u32 rcv_isn = be32_to_cpu(req->rcv_isn); |
| 565 | |
| 566 | csk = lookup_atid(t, atid); |
| 567 | if (unlikely(!csk)) { |
| 568 | pr_err("NO conn. for atid %u, cdev 0x%p.\n", atid, cdev); |
| 569 | goto rel_skb; |
| 570 | } |
| 571 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 572 | if (csk->atid != atid) { |
| 573 | pr_err("bad conn atid %u, csk 0x%p,%u,0x%lx,tid %u, atid %u.\n", |
| 574 | atid, csk, csk->state, csk->flags, csk->tid, csk->atid); |
| 575 | goto rel_skb; |
| 576 | } |
| 577 | |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 578 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 579 | "csk 0x%p,%u,0x%lx, tid %u, atid %u, rseq %u.\n", |
| 580 | csk, csk->state, csk->flags, tid, atid, rcv_isn); |
| 581 | |
| 582 | cxgbi_sock_get(csk); |
| 583 | csk->tid = tid; |
| 584 | cxgb4_insert_tid(lldi->tids, csk, tid); |
| 585 | cxgbi_sock_set_flag(csk, CTPF_HAS_TID); |
| 586 | |
| 587 | free_atid(csk); |
| 588 | |
| 589 | spin_lock_bh(&csk->lock); |
| 590 | if (unlikely(csk->state != CTP_ACTIVE_OPEN)) |
| 591 | pr_info("csk 0x%p,%u,0x%lx,%u, got EST.\n", |
| 592 | csk, csk->state, csk->flags, csk->tid); |
| 593 | |
| 594 | if (csk->retry_timer.function) { |
| 595 | del_timer(&csk->retry_timer); |
| 596 | csk->retry_timer.function = NULL; |
| 597 | } |
| 598 | |
| 599 | csk->copied_seq = csk->rcv_wup = csk->rcv_nxt = rcv_isn; |
| 600 | /* |
| 601 | * Causes the first RX_DATA_ACK to supply any Rx credits we couldn't |
| 602 | * pass through opt0. |
| 603 | */ |
| 604 | if (cxgb4i_rcv_win > (RCV_BUFSIZ_MASK << 10)) |
| 605 | csk->rcv_wup -= cxgb4i_rcv_win - (RCV_BUFSIZ_MASK << 10); |
| 606 | |
| 607 | csk->advmss = lldi->mtus[GET_TCPOPT_MSS(tcp_opt)] - 40; |
| 608 | if (GET_TCPOPT_TSTAMP(tcp_opt)) |
| 609 | csk->advmss -= 12; |
| 610 | if (csk->advmss < 128) |
| 611 | csk->advmss = 128; |
| 612 | |
| 613 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 614 | "csk 0x%p, mss_idx %u, advmss %u.\n", |
| 615 | csk, GET_TCPOPT_MSS(tcp_opt), csk->advmss); |
| 616 | |
| 617 | cxgbi_sock_established(csk, ntohl(req->snd_isn), ntohs(req->tcp_opt)); |
| 618 | |
| 619 | if (unlikely(cxgbi_sock_flag(csk, CTPF_ACTIVE_CLOSE_NEEDED))) |
| 620 | send_abort_req(csk); |
| 621 | else { |
| 622 | if (skb_queue_len(&csk->write_queue)) |
| 623 | push_tx_frames(csk, 0); |
| 624 | cxgbi_conn_tx_open(csk); |
| 625 | } |
| 626 | spin_unlock_bh(&csk->lock); |
| 627 | |
| 628 | rel_skb: |
| 629 | __kfree_skb(skb); |
| 630 | } |
| 631 | |
| 632 | static int act_open_rpl_status_to_errno(int status) |
| 633 | { |
| 634 | switch (status) { |
| 635 | case CPL_ERR_CONN_RESET: |
| 636 | return -ECONNREFUSED; |
| 637 | case CPL_ERR_ARP_MISS: |
| 638 | return -EHOSTUNREACH; |
| 639 | case CPL_ERR_CONN_TIMEDOUT: |
| 640 | return -ETIMEDOUT; |
| 641 | case CPL_ERR_TCAM_FULL: |
| 642 | return -ENOMEM; |
| 643 | case CPL_ERR_CONN_EXIST: |
| 644 | return -EADDRINUSE; |
| 645 | default: |
| 646 | return -EIO; |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | static void csk_act_open_retry_timer(unsigned long data) |
| 651 | { |
| 652 | struct sk_buff *skb; |
| 653 | struct cxgbi_sock *csk = (struct cxgbi_sock *)data; |
| 654 | |
| 655 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 656 | "csk 0x%p,%u,0x%lx,%u.\n", |
| 657 | csk, csk->state, csk->flags, csk->tid); |
| 658 | |
| 659 | cxgbi_sock_get(csk); |
| 660 | spin_lock_bh(&csk->lock); |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 661 | skb = alloc_wr(sizeof(struct cpl_act_open_req), 0, GFP_ATOMIC); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 662 | if (!skb) |
| 663 | cxgbi_sock_fail_act_open(csk, -ENOMEM); |
| 664 | else { |
| 665 | skb->sk = (struct sock *)csk; |
| 666 | t4_set_arp_err_handler(skb, csk, |
| 667 | cxgbi_sock_act_open_req_arp_failure); |
| 668 | send_act_open_req(csk, skb, csk->l2t); |
| 669 | } |
| 670 | spin_unlock_bh(&csk->lock); |
| 671 | cxgbi_sock_put(csk); |
| 672 | } |
| 673 | |
| 674 | static void do_act_open_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 675 | { |
| 676 | struct cxgbi_sock *csk; |
| 677 | struct cpl_act_open_rpl *rpl = (struct cpl_act_open_rpl *)skb->data; |
| 678 | unsigned int tid = GET_TID(rpl); |
| 679 | unsigned int atid = |
| 680 | GET_TID_TID(GET_AOPEN_ATID(be32_to_cpu(rpl->atid_status))); |
| 681 | unsigned int status = GET_AOPEN_STATUS(be32_to_cpu(rpl->atid_status)); |
| 682 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 683 | struct tid_info *t = lldi->tids; |
| 684 | |
| 685 | csk = lookup_atid(t, atid); |
| 686 | if (unlikely(!csk)) { |
| 687 | pr_err("NO matching conn. atid %u, tid %u.\n", atid, tid); |
| 688 | goto rel_skb; |
| 689 | } |
| 690 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 691 | pr_info("%pI4:%u-%pI4:%u, atid %u,%u, status %u, csk 0x%p,%u,0x%lx.\n", |
| 692 | &csk->saddr.sin_addr.s_addr, ntohs(csk->saddr.sin_port), |
| 693 | &csk->daddr.sin_addr.s_addr, ntohs(csk->daddr.sin_port), |
| 694 | atid, tid, status, csk, csk->state, csk->flags); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 695 | |
Karen Xie | 150cca7 | 2010-10-16 22:09:05 -0700 | [diff] [blame] | 696 | if (status == CPL_ERR_RTX_NEG_ADVICE) |
| 697 | goto rel_skb; |
| 698 | |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 699 | if (status && status != CPL_ERR_TCAM_FULL && |
| 700 | status != CPL_ERR_CONN_EXIST && |
| 701 | status != CPL_ERR_ARP_MISS) |
| 702 | cxgb4_remove_tid(lldi->tids, csk->port_id, GET_TID(rpl)); |
| 703 | |
| 704 | cxgbi_sock_get(csk); |
| 705 | spin_lock_bh(&csk->lock); |
| 706 | |
| 707 | if (status == CPL_ERR_CONN_EXIST && |
| 708 | csk->retry_timer.function != csk_act_open_retry_timer) { |
| 709 | csk->retry_timer.function = csk_act_open_retry_timer; |
| 710 | mod_timer(&csk->retry_timer, jiffies + HZ / 2); |
| 711 | } else |
| 712 | cxgbi_sock_fail_act_open(csk, |
| 713 | act_open_rpl_status_to_errno(status)); |
| 714 | |
| 715 | spin_unlock_bh(&csk->lock); |
| 716 | cxgbi_sock_put(csk); |
| 717 | rel_skb: |
| 718 | __kfree_skb(skb); |
| 719 | } |
| 720 | |
| 721 | static void do_peer_close(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 722 | { |
| 723 | struct cxgbi_sock *csk; |
| 724 | struct cpl_peer_close *req = (struct cpl_peer_close *)skb->data; |
| 725 | unsigned int tid = GET_TID(req); |
| 726 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 727 | struct tid_info *t = lldi->tids; |
| 728 | |
| 729 | csk = lookup_tid(t, tid); |
| 730 | if (unlikely(!csk)) { |
| 731 | pr_err("can't find connection for tid %u.\n", tid); |
| 732 | goto rel_skb; |
| 733 | } |
| 734 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 735 | "csk 0x%p,%u,0x%lx,%u.\n", |
| 736 | csk, csk->state, csk->flags, csk->tid); |
| 737 | cxgbi_sock_rcv_peer_close(csk); |
| 738 | rel_skb: |
| 739 | __kfree_skb(skb); |
| 740 | } |
| 741 | |
| 742 | static void do_close_con_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 743 | { |
| 744 | struct cxgbi_sock *csk; |
| 745 | struct cpl_close_con_rpl *rpl = (struct cpl_close_con_rpl *)skb->data; |
| 746 | unsigned int tid = GET_TID(rpl); |
| 747 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 748 | struct tid_info *t = lldi->tids; |
| 749 | |
| 750 | csk = lookup_tid(t, tid); |
| 751 | if (unlikely(!csk)) { |
| 752 | pr_err("can't find connection for tid %u.\n", tid); |
| 753 | goto rel_skb; |
| 754 | } |
| 755 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 756 | "csk 0x%p,%u,0x%lx,%u.\n", |
| 757 | csk, csk->state, csk->flags, csk->tid); |
| 758 | cxgbi_sock_rcv_close_conn_rpl(csk, ntohl(rpl->snd_nxt)); |
| 759 | rel_skb: |
| 760 | __kfree_skb(skb); |
| 761 | } |
| 762 | |
| 763 | static int abort_status_to_errno(struct cxgbi_sock *csk, int abort_reason, |
| 764 | int *need_rst) |
| 765 | { |
| 766 | switch (abort_reason) { |
| 767 | case CPL_ERR_BAD_SYN: /* fall through */ |
| 768 | case CPL_ERR_CONN_RESET: |
| 769 | return csk->state > CTP_ESTABLISHED ? |
| 770 | -EPIPE : -ECONNRESET; |
| 771 | case CPL_ERR_XMIT_TIMEDOUT: |
| 772 | case CPL_ERR_PERSIST_TIMEDOUT: |
| 773 | case CPL_ERR_FINWAIT2_TIMEDOUT: |
| 774 | case CPL_ERR_KEEPALIVE_TIMEDOUT: |
| 775 | return -ETIMEDOUT; |
| 776 | default: |
| 777 | return -EIO; |
| 778 | } |
| 779 | } |
| 780 | |
| 781 | static void do_abort_req_rss(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 782 | { |
| 783 | struct cxgbi_sock *csk; |
| 784 | struct cpl_abort_req_rss *req = (struct cpl_abort_req_rss *)skb->data; |
| 785 | unsigned int tid = GET_TID(req); |
| 786 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 787 | struct tid_info *t = lldi->tids; |
| 788 | int rst_status = CPL_ABORT_NO_RST; |
| 789 | |
| 790 | csk = lookup_tid(t, tid); |
| 791 | if (unlikely(!csk)) { |
| 792 | pr_err("can't find connection for tid %u.\n", tid); |
| 793 | goto rel_skb; |
| 794 | } |
| 795 | |
| 796 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 797 | "csk 0x%p,%u,0x%lx, tid %u, status 0x%x.\n", |
| 798 | csk, csk->state, csk->flags, csk->tid, req->status); |
| 799 | |
| 800 | if (req->status == CPL_ERR_RTX_NEG_ADVICE || |
| 801 | req->status == CPL_ERR_PERSIST_NEG_ADVICE) |
| 802 | goto rel_skb; |
| 803 | |
| 804 | cxgbi_sock_get(csk); |
| 805 | spin_lock_bh(&csk->lock); |
| 806 | |
| 807 | if (!cxgbi_sock_flag(csk, CTPF_ABORT_REQ_RCVD)) { |
| 808 | cxgbi_sock_set_flag(csk, CTPF_ABORT_REQ_RCVD); |
| 809 | cxgbi_sock_set_state(csk, CTP_ABORTING); |
| 810 | goto done; |
| 811 | } |
| 812 | |
| 813 | cxgbi_sock_clear_flag(csk, CTPF_ABORT_REQ_RCVD); |
| 814 | send_abort_rpl(csk, rst_status); |
| 815 | |
| 816 | if (!cxgbi_sock_flag(csk, CTPF_ABORT_RPL_PENDING)) { |
| 817 | csk->err = abort_status_to_errno(csk, req->status, &rst_status); |
| 818 | cxgbi_sock_closed(csk); |
| 819 | } |
| 820 | done: |
| 821 | spin_unlock_bh(&csk->lock); |
| 822 | cxgbi_sock_put(csk); |
| 823 | rel_skb: |
| 824 | __kfree_skb(skb); |
| 825 | } |
| 826 | |
| 827 | static void do_abort_rpl_rss(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 828 | { |
| 829 | struct cxgbi_sock *csk; |
| 830 | struct cpl_abort_rpl_rss *rpl = (struct cpl_abort_rpl_rss *)skb->data; |
| 831 | unsigned int tid = GET_TID(rpl); |
| 832 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 833 | struct tid_info *t = lldi->tids; |
| 834 | |
| 835 | csk = lookup_tid(t, tid); |
| 836 | if (!csk) |
| 837 | goto rel_skb; |
| 838 | |
| 839 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 840 | "status 0x%x, csk 0x%p, s %u, 0x%lx.\n", |
| 841 | rpl->status, csk, csk ? csk->state : 0, |
| 842 | csk ? csk->flags : 0UL); |
| 843 | |
| 844 | if (rpl->status == CPL_ERR_ABORT_FAILED) |
| 845 | goto rel_skb; |
| 846 | |
| 847 | cxgbi_sock_rcv_abort_rpl(csk); |
| 848 | rel_skb: |
| 849 | __kfree_skb(skb); |
| 850 | } |
| 851 | |
| 852 | static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 853 | { |
| 854 | struct cxgbi_sock *csk; |
| 855 | struct cpl_iscsi_hdr *cpl = (struct cpl_iscsi_hdr *)skb->data; |
| 856 | unsigned short pdu_len_ddp = be16_to_cpu(cpl->pdu_len_ddp); |
| 857 | unsigned int tid = GET_TID(cpl); |
| 858 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 859 | struct tid_info *t = lldi->tids; |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 860 | |
| 861 | csk = lookup_tid(t, tid); |
| 862 | if (unlikely(!csk)) { |
| 863 | pr_err("can't find conn. for tid %u.\n", tid); |
| 864 | goto rel_skb; |
| 865 | } |
| 866 | |
| 867 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
| 868 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p,%u, 0x%x.\n", |
| 869 | csk, csk->state, csk->flags, csk->tid, skb, skb->len, |
| 870 | pdu_len_ddp); |
| 871 | |
| 872 | spin_lock_bh(&csk->lock); |
| 873 | |
| 874 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { |
| 875 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 876 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", |
| 877 | csk, csk->state, csk->flags, csk->tid); |
| 878 | if (csk->state != CTP_ABORTING) |
| 879 | goto abort_conn; |
| 880 | else |
| 881 | goto discard; |
| 882 | } |
| 883 | |
| 884 | cxgbi_skcb_tcp_seq(skb) = ntohl(cpl->seq); |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 885 | cxgbi_skcb_flags(skb) = 0; |
| 886 | |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 887 | skb_reset_transport_header(skb); |
| 888 | __skb_pull(skb, sizeof(*cpl)); |
| 889 | __pskb_trim(skb, ntohs(cpl->len)); |
| 890 | |
| 891 | if (!csk->skb_ulp_lhdr) { |
| 892 | unsigned char *bhs; |
| 893 | unsigned int hlen, dlen; |
| 894 | |
| 895 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
| 896 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p header.\n", |
| 897 | csk, csk->state, csk->flags, csk->tid, skb); |
| 898 | csk->skb_ulp_lhdr = skb; |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 899 | cxgbi_skcb_set_flag(skb, SKCBF_RX_HDR); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 900 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 901 | if (cxgbi_skcb_tcp_seq(skb) != csk->rcv_nxt) { |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 902 | pr_info("tid %u, CPL_ISCSI_HDR, bad seq, 0x%x/0x%x.\n", |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 903 | csk->tid, cxgbi_skcb_tcp_seq(skb), |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 904 | csk->rcv_nxt); |
| 905 | goto abort_conn; |
| 906 | } |
| 907 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 908 | bhs = skb->data; |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 909 | hlen = ntohs(cpl->len); |
| 910 | dlen = ntohl(*(unsigned int *)(bhs + 4)) & 0xFFFFFF; |
| 911 | |
| 912 | if ((hlen + dlen) != ISCSI_PDU_LEN(pdu_len_ddp) - 40) { |
| 913 | pr_info("tid 0x%x, CPL_ISCSI_HDR, pdu len " |
| 914 | "mismatch %u != %u + %u, seq 0x%x.\n", |
| 915 | csk->tid, ISCSI_PDU_LEN(pdu_len_ddp) - 40, |
| 916 | hlen, dlen, cxgbi_skcb_tcp_seq(skb)); |
| 917 | goto abort_conn; |
| 918 | } |
| 919 | |
| 920 | cxgbi_skcb_rx_pdulen(skb) = (hlen + dlen + 3) & (~0x3); |
| 921 | if (dlen) |
| 922 | cxgbi_skcb_rx_pdulen(skb) += csk->dcrc_len; |
| 923 | csk->rcv_nxt += cxgbi_skcb_rx_pdulen(skb); |
| 924 | |
| 925 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
| 926 | "csk 0x%p, skb 0x%p, 0x%x,%u+%u,0x%x,0x%x.\n", |
| 927 | csk, skb, *bhs, hlen, dlen, |
| 928 | ntohl(*((unsigned int *)(bhs + 16))), |
| 929 | ntohl(*((unsigned int *)(bhs + 24)))); |
| 930 | |
| 931 | } else { |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 932 | struct sk_buff *lskb = csk->skb_ulp_lhdr; |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 933 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 934 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 935 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
| 936 | "csk 0x%p,%u,0x%lx, skb 0x%p data, 0x%p.\n", |
| 937 | csk, csk->state, csk->flags, skb, lskb); |
| 938 | } |
| 939 | |
| 940 | __skb_queue_tail(&csk->receive_queue, skb); |
| 941 | spin_unlock_bh(&csk->lock); |
| 942 | return; |
| 943 | |
| 944 | abort_conn: |
| 945 | send_abort_req(csk); |
| 946 | discard: |
| 947 | spin_unlock_bh(&csk->lock); |
| 948 | rel_skb: |
| 949 | __kfree_skb(skb); |
| 950 | } |
| 951 | |
| 952 | static void do_rx_data_ddp(struct cxgbi_device *cdev, |
| 953 | struct sk_buff *skb) |
| 954 | { |
| 955 | struct cxgbi_sock *csk; |
| 956 | struct sk_buff *lskb; |
| 957 | struct cpl_rx_data_ddp *rpl = (struct cpl_rx_data_ddp *)skb->data; |
| 958 | unsigned int tid = GET_TID(rpl); |
| 959 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 960 | struct tid_info *t = lldi->tids; |
| 961 | unsigned int status = ntohl(rpl->ddpvld); |
| 962 | |
| 963 | csk = lookup_tid(t, tid); |
| 964 | if (unlikely(!csk)) { |
| 965 | pr_err("can't find connection for tid %u.\n", tid); |
| 966 | goto rel_skb; |
| 967 | } |
| 968 | |
| 969 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
| 970 | "csk 0x%p,%u,0x%lx, skb 0x%p,0x%x, lhdr 0x%p.\n", |
| 971 | csk, csk->state, csk->flags, skb, status, csk->skb_ulp_lhdr); |
| 972 | |
| 973 | spin_lock_bh(&csk->lock); |
| 974 | |
| 975 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { |
| 976 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 977 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", |
| 978 | csk, csk->state, csk->flags, csk->tid); |
| 979 | if (csk->state != CTP_ABORTING) |
| 980 | goto abort_conn; |
| 981 | else |
| 982 | goto discard; |
| 983 | } |
| 984 | |
| 985 | if (!csk->skb_ulp_lhdr) { |
| 986 | pr_err("tid 0x%x, rcv RX_DATA_DDP w/o pdu bhs.\n", csk->tid); |
| 987 | goto abort_conn; |
| 988 | } |
| 989 | |
| 990 | lskb = csk->skb_ulp_lhdr; |
| 991 | csk->skb_ulp_lhdr = NULL; |
| 992 | |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 993 | cxgbi_skcb_rx_ddigest(lskb) = ntohl(rpl->ulp_crc); |
| 994 | |
| 995 | if (ntohs(rpl->len) != cxgbi_skcb_rx_pdulen(lskb)) |
| 996 | pr_info("tid 0x%x, RX_DATA_DDP pdulen %u != %u.\n", |
| 997 | csk->tid, ntohs(rpl->len), cxgbi_skcb_rx_pdulen(lskb)); |
| 998 | |
| 999 | if (status & (1 << CPL_RX_DDP_STATUS_HCRC_SHIFT)) { |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1000 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, hcrc bad 0x%lx.\n", |
| 1001 | csk, lskb, status, cxgbi_skcb_flags(lskb)); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1002 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_HCRC_ERR); |
| 1003 | } |
| 1004 | if (status & (1 << CPL_RX_DDP_STATUS_DCRC_SHIFT)) { |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1005 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, dcrc bad 0x%lx.\n", |
| 1006 | csk, lskb, status, cxgbi_skcb_flags(lskb)); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1007 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DCRC_ERR); |
| 1008 | } |
| 1009 | if (status & (1 << CPL_RX_DDP_STATUS_PAD_SHIFT)) { |
| 1010 | log_debug(1 << CXGBI_DBG_PDU_RX, |
| 1011 | "csk 0x%p, lhdr 0x%p, status 0x%x, pad bad.\n", |
| 1012 | csk, lskb, status); |
| 1013 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_PAD_ERR); |
| 1014 | } |
| 1015 | if ((status & (1 << CPL_RX_DDP_STATUS_DDP_SHIFT)) && |
| 1016 | !cxgbi_skcb_test_flag(lskb, SKCBF_RX_DATA)) { |
| 1017 | log_debug(1 << CXGBI_DBG_PDU_RX, |
| 1018 | "csk 0x%p, lhdr 0x%p, 0x%x, data ddp'ed.\n", |
| 1019 | csk, lskb, status); |
| 1020 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA_DDPD); |
| 1021 | } |
| 1022 | log_debug(1 << CXGBI_DBG_PDU_RX, |
| 1023 | "csk 0x%p, lskb 0x%p, f 0x%lx.\n", |
| 1024 | csk, lskb, cxgbi_skcb_flags(lskb)); |
| 1025 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1026 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_STATUS); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1027 | cxgbi_conn_pdu_ready(csk); |
| 1028 | spin_unlock_bh(&csk->lock); |
| 1029 | goto rel_skb; |
| 1030 | |
| 1031 | abort_conn: |
| 1032 | send_abort_req(csk); |
| 1033 | discard: |
| 1034 | spin_unlock_bh(&csk->lock); |
| 1035 | rel_skb: |
| 1036 | __kfree_skb(skb); |
| 1037 | } |
| 1038 | |
| 1039 | static void do_fw4_ack(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 1040 | { |
| 1041 | struct cxgbi_sock *csk; |
| 1042 | struct cpl_fw4_ack *rpl = (struct cpl_fw4_ack *)skb->data; |
| 1043 | unsigned int tid = GET_TID(rpl); |
| 1044 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 1045 | struct tid_info *t = lldi->tids; |
| 1046 | |
| 1047 | csk = lookup_tid(t, tid); |
| 1048 | if (unlikely(!csk)) |
| 1049 | pr_err("can't find connection for tid %u.\n", tid); |
| 1050 | else { |
| 1051 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 1052 | "csk 0x%p,%u,0x%lx,%u.\n", |
| 1053 | csk, csk->state, csk->flags, csk->tid); |
| 1054 | cxgbi_sock_rcv_wr_ack(csk, rpl->credits, ntohl(rpl->snd_una), |
| 1055 | rpl->seq_vld); |
| 1056 | } |
| 1057 | __kfree_skb(skb); |
| 1058 | } |
| 1059 | |
| 1060 | static void do_set_tcb_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) |
| 1061 | { |
| 1062 | struct cpl_set_tcb_rpl *rpl = (struct cpl_set_tcb_rpl *)skb->data; |
| 1063 | unsigned int tid = GET_TID(rpl); |
| 1064 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 1065 | struct tid_info *t = lldi->tids; |
| 1066 | struct cxgbi_sock *csk; |
| 1067 | |
| 1068 | csk = lookup_tid(t, tid); |
| 1069 | if (!csk) |
| 1070 | pr_err("can't find conn. for tid %u.\n", tid); |
| 1071 | |
| 1072 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 1073 | "csk 0x%p,%u,%lx,%u, status 0x%x.\n", |
| 1074 | csk, csk->state, csk->flags, csk->tid, rpl->status); |
| 1075 | |
| 1076 | if (rpl->status != CPL_ERR_NONE) |
| 1077 | pr_err("csk 0x%p,%u, SET_TCB_RPL status %u.\n", |
| 1078 | csk, tid, rpl->status); |
| 1079 | |
| 1080 | __kfree_skb(skb); |
| 1081 | } |
| 1082 | |
| 1083 | static int alloc_cpls(struct cxgbi_sock *csk) |
| 1084 | { |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1085 | csk->cpl_close = alloc_wr(sizeof(struct cpl_close_con_req), |
| 1086 | 0, GFP_KERNEL); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1087 | if (!csk->cpl_close) |
| 1088 | return -ENOMEM; |
| 1089 | |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1090 | csk->cpl_abort_req = alloc_wr(sizeof(struct cpl_abort_req), |
| 1091 | 0, GFP_KERNEL); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1092 | if (!csk->cpl_abort_req) |
| 1093 | goto free_cpls; |
| 1094 | |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1095 | csk->cpl_abort_rpl = alloc_wr(sizeof(struct cpl_abort_rpl), |
| 1096 | 0, GFP_KERNEL); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1097 | if (!csk->cpl_abort_rpl) |
| 1098 | goto free_cpls; |
| 1099 | return 0; |
| 1100 | |
| 1101 | free_cpls: |
| 1102 | cxgbi_sock_free_cpl_skbs(csk); |
| 1103 | return -ENOMEM; |
| 1104 | } |
| 1105 | |
| 1106 | static inline void l2t_put(struct cxgbi_sock *csk) |
| 1107 | { |
| 1108 | if (csk->l2t) { |
| 1109 | cxgb4_l2t_release(csk->l2t); |
| 1110 | csk->l2t = NULL; |
| 1111 | cxgbi_sock_put(csk); |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | static void release_offload_resources(struct cxgbi_sock *csk) |
| 1116 | { |
| 1117 | struct cxgb4_lld_info *lldi; |
| 1118 | |
| 1119 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 1120 | "csk 0x%p,%u,0x%lx,%u.\n", |
| 1121 | csk, csk->state, csk->flags, csk->tid); |
| 1122 | |
| 1123 | cxgbi_sock_free_cpl_skbs(csk); |
| 1124 | if (csk->wr_cred != csk->wr_max_cred) { |
| 1125 | cxgbi_sock_purge_wr_queue(csk); |
| 1126 | cxgbi_sock_reset_wr_list(csk); |
| 1127 | } |
| 1128 | |
| 1129 | l2t_put(csk); |
| 1130 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) |
| 1131 | free_atid(csk); |
| 1132 | else if (cxgbi_sock_flag(csk, CTPF_HAS_TID)) { |
| 1133 | lldi = cxgbi_cdev_priv(csk->cdev); |
| 1134 | cxgb4_remove_tid(lldi->tids, 0, csk->tid); |
| 1135 | cxgbi_sock_clear_flag(csk, CTPF_HAS_TID); |
| 1136 | cxgbi_sock_put(csk); |
| 1137 | } |
| 1138 | csk->dst = NULL; |
| 1139 | csk->cdev = NULL; |
| 1140 | } |
| 1141 | |
| 1142 | static int init_act_open(struct cxgbi_sock *csk) |
| 1143 | { |
| 1144 | struct cxgbi_device *cdev = csk->cdev; |
| 1145 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 1146 | struct net_device *ndev = cdev->ports[csk->port_id]; |
| 1147 | struct port_info *pi = netdev_priv(ndev); |
| 1148 | struct sk_buff *skb = NULL; |
| 1149 | unsigned int step; |
| 1150 | |
| 1151 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 1152 | "csk 0x%p,%u,0x%lx,%u.\n", |
| 1153 | csk, csk->state, csk->flags, csk->tid); |
| 1154 | |
| 1155 | csk->atid = cxgb4_alloc_atid(lldi->tids, csk); |
| 1156 | if (csk->atid < 0) { |
| 1157 | pr_err("%s, NO atid available.\n", ndev->name); |
| 1158 | return -EINVAL; |
| 1159 | } |
| 1160 | cxgbi_sock_set_flag(csk, CTPF_HAS_ATID); |
| 1161 | cxgbi_sock_get(csk); |
| 1162 | |
David S. Miller | 69cce1d | 2011-07-17 23:09:49 -0700 | [diff] [blame^] | 1163 | csk->l2t = cxgb4_l2t_get(lldi->l2t, dst_get_neighbour(csk->dst), ndev, 0); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1164 | if (!csk->l2t) { |
| 1165 | pr_err("%s, cannot alloc l2t.\n", ndev->name); |
| 1166 | goto rel_resource; |
| 1167 | } |
| 1168 | cxgbi_sock_get(csk); |
| 1169 | |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1170 | skb = alloc_wr(sizeof(struct cpl_act_open_req), 0, GFP_KERNEL); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1171 | if (!skb) |
| 1172 | goto rel_resource; |
| 1173 | skb->sk = (struct sock *)csk; |
| 1174 | t4_set_arp_err_handler(skb, csk, cxgbi_sock_act_open_req_arp_failure); |
| 1175 | |
| 1176 | if (!csk->mtu) |
| 1177 | csk->mtu = dst_mtu(csk->dst); |
| 1178 | cxgb4_best_mtu(lldi->mtus, csk->mtu, &csk->mss_idx); |
| 1179 | csk->tx_chan = cxgb4_port_chan(ndev); |
| 1180 | /* SMT two entries per row */ |
| 1181 | csk->smac_idx = ((cxgb4_port_viid(ndev) & 0x7F)) << 1; |
| 1182 | step = lldi->ntxq / lldi->nchan; |
| 1183 | csk->txq_idx = cxgb4_port_idx(ndev) * step; |
| 1184 | step = lldi->nrxq / lldi->nchan; |
| 1185 | csk->rss_qid = lldi->rxq_ids[cxgb4_port_idx(ndev) * step]; |
| 1186 | csk->wr_max_cred = csk->wr_cred = lldi->wr_cred; |
| 1187 | csk->wr_una_cred = 0; |
| 1188 | cxgbi_sock_reset_wr_list(csk); |
| 1189 | csk->err = 0; |
| 1190 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 1191 | "csk 0x%p,p%d,%s, %u,%u,%u, mss %u,%u, smac %u.\n", |
| 1192 | csk, pi->port_id, ndev->name, csk->tx_chan, |
| 1193 | csk->txq_idx, csk->rss_qid, csk->mtu, csk->mss_idx, |
| 1194 | csk->smac_idx); |
| 1195 | |
| 1196 | cxgbi_sock_set_state(csk, CTP_ACTIVE_OPEN); |
| 1197 | send_act_open_req(csk, skb, csk->l2t); |
| 1198 | return 0; |
| 1199 | |
| 1200 | rel_resource: |
| 1201 | if (skb) |
| 1202 | __kfree_skb(skb); |
| 1203 | return -EINVAL; |
| 1204 | } |
| 1205 | |
| 1206 | cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = { |
| 1207 | [CPL_ACT_ESTABLISH] = do_act_establish, |
| 1208 | [CPL_ACT_OPEN_RPL] = do_act_open_rpl, |
| 1209 | [CPL_PEER_CLOSE] = do_peer_close, |
| 1210 | [CPL_ABORT_REQ_RSS] = do_abort_req_rss, |
| 1211 | [CPL_ABORT_RPL_RSS] = do_abort_rpl_rss, |
| 1212 | [CPL_CLOSE_CON_RPL] = do_close_con_rpl, |
| 1213 | [CPL_FW4_ACK] = do_fw4_ack, |
| 1214 | [CPL_ISCSI_HDR] = do_rx_iscsi_hdr, |
| 1215 | [CPL_SET_TCB_RPL] = do_set_tcb_rpl, |
| 1216 | [CPL_RX_DATA_DDP] = do_rx_data_ddp, |
| 1217 | }; |
| 1218 | |
| 1219 | int cxgb4i_ofld_init(struct cxgbi_device *cdev) |
| 1220 | { |
| 1221 | int rc; |
| 1222 | |
| 1223 | if (cxgb4i_max_connect > CXGB4I_MAX_CONN) |
| 1224 | cxgb4i_max_connect = CXGB4I_MAX_CONN; |
| 1225 | |
| 1226 | rc = cxgbi_device_portmap_create(cdev, cxgb4i_sport_base, |
| 1227 | cxgb4i_max_connect); |
| 1228 | if (rc < 0) |
| 1229 | return rc; |
| 1230 | |
| 1231 | cdev->csk_release_offload_resources = release_offload_resources; |
| 1232 | cdev->csk_push_tx_frames = push_tx_frames; |
| 1233 | cdev->csk_send_abort_req = send_abort_req; |
| 1234 | cdev->csk_send_close_req = send_close_req; |
| 1235 | cdev->csk_send_rx_credits = send_rx_credits; |
| 1236 | cdev->csk_alloc_cpls = alloc_cpls; |
| 1237 | cdev->csk_init_act_open = init_act_open; |
| 1238 | |
| 1239 | pr_info("cdev 0x%p, offload up, added.\n", cdev); |
| 1240 | return 0; |
| 1241 | } |
| 1242 | |
| 1243 | /* |
| 1244 | * functions to program the pagepod in h/w |
| 1245 | */ |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1246 | #define ULPMEM_IDATA_MAX_NPPODS 4 /* 256/PPOD_SIZE */ |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1247 | static inline void ulp_mem_io_set_hdr(struct ulp_mem_io *req, |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1248 | unsigned int wr_len, unsigned int dlen, |
| 1249 | unsigned int pm_addr) |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1250 | { |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1251 | struct ulptx_idata *idata = (struct ulptx_idata *)(req + 1); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1252 | |
| 1253 | INIT_ULPTX_WR(req, wr_len, 0, 0); |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1254 | req->cmd = htonl(ULPTX_CMD(ULP_TX_MEM_WRITE) | (1 << 23)); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1255 | req->dlen = htonl(ULP_MEMIO_DATA_LEN(dlen >> 5)); |
| 1256 | req->lock_addr = htonl(ULP_MEMIO_ADDR(pm_addr >> 5)); |
| 1257 | req->len16 = htonl(DIV_ROUND_UP(wr_len - sizeof(req->wr), 16)); |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1258 | |
| 1259 | idata->cmd_more = htonl(ULPTX_CMD(ULP_TX_SC_IMM)); |
| 1260 | idata->len = htonl(dlen); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1261 | } |
| 1262 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1263 | static int ddp_ppod_write_idata(struct cxgbi_device *cdev, unsigned int port_id, |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1264 | struct cxgbi_pagepod_hdr *hdr, unsigned int idx, |
| 1265 | unsigned int npods, |
| 1266 | struct cxgbi_gather_list *gl, |
| 1267 | unsigned int gl_pidx) |
| 1268 | { |
| 1269 | struct cxgbi_ddp_info *ddp = cdev->ddp; |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1270 | struct sk_buff *skb; |
| 1271 | struct ulp_mem_io *req; |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1272 | struct ulptx_idata *idata; |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1273 | struct cxgbi_pagepod *ppod; |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1274 | unsigned int pm_addr = idx * PPOD_SIZE + ddp->llimit; |
| 1275 | unsigned int dlen = PPOD_SIZE * npods; |
| 1276 | unsigned int wr_len = roundup(sizeof(struct ulp_mem_io) + |
| 1277 | sizeof(struct ulptx_idata) + dlen, 16); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1278 | unsigned int i; |
| 1279 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1280 | skb = alloc_wr(wr_len, 0, GFP_ATOMIC); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1281 | if (!skb) { |
| 1282 | pr_err("cdev 0x%p, idx %u, npods %u, OOM.\n", |
| 1283 | cdev, idx, npods); |
| 1284 | return -ENOMEM; |
| 1285 | } |
| 1286 | req = (struct ulp_mem_io *)skb->head; |
| 1287 | set_queue(skb, CPL_PRIORITY_CONTROL, NULL); |
| 1288 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1289 | ulp_mem_io_set_hdr(req, wr_len, dlen, pm_addr); |
| 1290 | idata = (struct ulptx_idata *)(req + 1); |
| 1291 | ppod = (struct cxgbi_pagepod *)(idata + 1); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1292 | |
| 1293 | for (i = 0; i < npods; i++, ppod++, gl_pidx += PPOD_PAGES_MAX) { |
| 1294 | if (!hdr && !gl) |
| 1295 | cxgbi_ddp_ppod_clear(ppod); |
| 1296 | else |
| 1297 | cxgbi_ddp_ppod_set(ppod, hdr, gl, gl_pidx); |
| 1298 | } |
| 1299 | |
| 1300 | cxgb4_ofld_send(cdev->ports[port_id], skb); |
| 1301 | return 0; |
| 1302 | } |
| 1303 | |
| 1304 | static int ddp_set_map(struct cxgbi_sock *csk, struct cxgbi_pagepod_hdr *hdr, |
| 1305 | unsigned int idx, unsigned int npods, |
| 1306 | struct cxgbi_gather_list *gl) |
| 1307 | { |
| 1308 | unsigned int i, cnt; |
| 1309 | int err = 0; |
| 1310 | |
| 1311 | for (i = 0; i < npods; i += cnt, idx += cnt) { |
| 1312 | cnt = npods - i; |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1313 | if (cnt > ULPMEM_IDATA_MAX_NPPODS) |
| 1314 | cnt = ULPMEM_IDATA_MAX_NPPODS; |
| 1315 | err = ddp_ppod_write_idata(csk->cdev, csk->port_id, hdr, |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1316 | idx, cnt, gl, 4 * i); |
| 1317 | if (err < 0) |
| 1318 | break; |
| 1319 | } |
| 1320 | return err; |
| 1321 | } |
| 1322 | |
| 1323 | static void ddp_clear_map(struct cxgbi_hba *chba, unsigned int tag, |
| 1324 | unsigned int idx, unsigned int npods) |
| 1325 | { |
| 1326 | unsigned int i, cnt; |
| 1327 | int err; |
| 1328 | |
| 1329 | for (i = 0; i < npods; i += cnt, idx += cnt) { |
| 1330 | cnt = npods - i; |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1331 | if (cnt > ULPMEM_IDATA_MAX_NPPODS) |
| 1332 | cnt = ULPMEM_IDATA_MAX_NPPODS; |
| 1333 | err = ddp_ppod_write_idata(chba->cdev, chba->port_id, NULL, |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1334 | idx, cnt, NULL, 0); |
| 1335 | if (err < 0) |
| 1336 | break; |
| 1337 | } |
| 1338 | } |
| 1339 | |
| 1340 | static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, |
| 1341 | int pg_idx, bool reply) |
| 1342 | { |
| 1343 | struct sk_buff *skb; |
| 1344 | struct cpl_set_tcb_field *req; |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1345 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1346 | if (!pg_idx || pg_idx >= DDP_PGIDX_MAX) |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1347 | return 0; |
| 1348 | |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1349 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1350 | if (!skb) |
| 1351 | return -ENOMEM; |
| 1352 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1353 | /* set up ulp page size */ |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1354 | req = (struct cpl_set_tcb_field *)skb->head; |
| 1355 | INIT_TP_WR(req, csk->tid); |
| 1356 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); |
| 1357 | req->reply_ctrl = htons(NO_REPLY(reply) | QUEUENO(csk->rss_qid)); |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1358 | req->word_cookie = htons(0); |
| 1359 | req->mask = cpu_to_be64(0x3 << 8); |
| 1360 | req->val = cpu_to_be64(pg_idx << 8); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1361 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
| 1362 | |
| 1363 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 1364 | "csk 0x%p, tid 0x%x, pg_idx %u.\n", csk, csk->tid, pg_idx); |
| 1365 | |
| 1366 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
| 1367 | return 0; |
| 1368 | } |
| 1369 | |
| 1370 | static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, |
| 1371 | int hcrc, int dcrc, int reply) |
| 1372 | { |
| 1373 | struct sk_buff *skb; |
| 1374 | struct cpl_set_tcb_field *req; |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1375 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1376 | if (!hcrc && !dcrc) |
| 1377 | return 0; |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1378 | |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1379 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1380 | if (!skb) |
| 1381 | return -ENOMEM; |
| 1382 | |
| 1383 | csk->hcrc_len = (hcrc ? 4 : 0); |
| 1384 | csk->dcrc_len = (dcrc ? 4 : 0); |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1385 | /* set up ulp submode */ |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1386 | req = (struct cpl_set_tcb_field *)skb->head; |
| 1387 | INIT_TP_WR(req, tid); |
| 1388 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); |
| 1389 | req->reply_ctrl = htons(NO_REPLY(reply) | QUEUENO(csk->rss_qid)); |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1390 | req->word_cookie = htons(0); |
| 1391 | req->mask = cpu_to_be64(0x3 << 4); |
| 1392 | req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) | |
| 1393 | (dcrc ? ULP_CRC_DATA : 0)) << 4); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1394 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
| 1395 | |
| 1396 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
| 1397 | "csk 0x%p, tid 0x%x, crc %d,%d.\n", csk, csk->tid, hcrc, dcrc); |
| 1398 | |
| 1399 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
| 1400 | return 0; |
| 1401 | } |
| 1402 | |
| 1403 | static int cxgb4i_ddp_init(struct cxgbi_device *cdev) |
| 1404 | { |
| 1405 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
| 1406 | struct cxgbi_ddp_info *ddp = cdev->ddp; |
| 1407 | unsigned int tagmask, pgsz_factor[4]; |
| 1408 | int err; |
| 1409 | |
| 1410 | if (ddp) { |
| 1411 | kref_get(&ddp->refcnt); |
| 1412 | pr_warn("cdev 0x%p, ddp 0x%p already set up.\n", |
| 1413 | cdev, cdev->ddp); |
| 1414 | return -EALREADY; |
| 1415 | } |
| 1416 | |
| 1417 | err = cxgbi_ddp_init(cdev, lldi->vr->iscsi.start, |
| 1418 | lldi->vr->iscsi.start + lldi->vr->iscsi.size - 1, |
| 1419 | lldi->iscsi_iolen, lldi->iscsi_iolen); |
| 1420 | if (err < 0) |
| 1421 | return err; |
| 1422 | |
| 1423 | ddp = cdev->ddp; |
| 1424 | |
| 1425 | tagmask = ddp->idx_mask << PPOD_IDX_SHIFT; |
| 1426 | cxgbi_ddp_page_size_factor(pgsz_factor); |
| 1427 | cxgb4_iscsi_init(lldi->ports[0], tagmask, pgsz_factor); |
| 1428 | |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1429 | cdev->csk_ddp_setup_digest = ddp_setup_conn_digest; |
| 1430 | cdev->csk_ddp_setup_pgidx = ddp_setup_conn_pgidx; |
| 1431 | cdev->csk_ddp_set = ddp_set_map; |
| 1432 | cdev->csk_ddp_clear = ddp_clear_map; |
| 1433 | |
| 1434 | pr_info("cxgb4i 0x%p tag: sw %u, rsvd %u,%u, mask 0x%x.\n", |
| 1435 | cdev, cdev->tag_format.sw_bits, cdev->tag_format.rsvd_bits, |
| 1436 | cdev->tag_format.rsvd_shift, cdev->tag_format.rsvd_mask); |
| 1437 | pr_info("cxgb4i 0x%p, nppods %u, bits %u, mask 0x%x,0x%x pkt %u/%u, " |
| 1438 | " %u/%u.\n", |
| 1439 | cdev, ddp->nppods, ddp->idx_bits, ddp->idx_mask, |
| 1440 | ddp->rsvd_tag_mask, ddp->max_txsz, lldi->iscsi_iolen, |
| 1441 | ddp->max_rxsz, lldi->iscsi_iolen); |
| 1442 | pr_info("cxgb4i 0x%p max payload size: %u/%u, %u/%u.\n", |
| 1443 | cdev, cdev->tx_max_size, ddp->max_txsz, cdev->rx_max_size, |
| 1444 | ddp->max_rxsz); |
| 1445 | return 0; |
| 1446 | } |
| 1447 | |
| 1448 | static void *t4_uld_add(const struct cxgb4_lld_info *lldi) |
| 1449 | { |
| 1450 | struct cxgbi_device *cdev; |
| 1451 | struct port_info *pi; |
| 1452 | int i, rc; |
| 1453 | |
| 1454 | cdev = cxgbi_device_register(sizeof(*lldi), lldi->nports); |
| 1455 | if (!cdev) { |
| 1456 | pr_info("t4 device 0x%p, register failed.\n", lldi); |
| 1457 | return NULL; |
| 1458 | } |
| 1459 | pr_info("0x%p,0x%x, ports %u,%s, chan %u, q %u,%u, wr %u.\n", |
| 1460 | cdev, lldi->adapter_type, lldi->nports, |
| 1461 | lldi->ports[0]->name, lldi->nchan, lldi->ntxq, |
| 1462 | lldi->nrxq, lldi->wr_cred); |
| 1463 | for (i = 0; i < lldi->nrxq; i++) |
| 1464 | log_debug(1 << CXGBI_DBG_DEV, |
| 1465 | "t4 0x%p, rxq id #%d: %u.\n", |
| 1466 | cdev, i, lldi->rxq_ids[i]); |
| 1467 | |
| 1468 | memcpy(cxgbi_cdev_priv(cdev), lldi, sizeof(*lldi)); |
| 1469 | cdev->flags = CXGBI_FLAG_DEV_T4; |
| 1470 | cdev->pdev = lldi->pdev; |
| 1471 | cdev->ports = lldi->ports; |
| 1472 | cdev->nports = lldi->nports; |
| 1473 | cdev->mtus = lldi->mtus; |
| 1474 | cdev->nmtus = NMTUS; |
| 1475 | cdev->snd_win = cxgb4i_snd_win; |
| 1476 | cdev->rcv_win = cxgb4i_rcv_win; |
| 1477 | cdev->rx_credit_thres = cxgb4i_rx_credit_thres; |
| 1478 | cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN; |
| 1479 | cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr); |
| 1480 | cdev->itp = &cxgb4i_iscsi_transport; |
| 1481 | |
kxie@chelsio.com | e27d616 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1482 | cdev->pfvf = FW_VIID_PFN_GET(cxgb4_port_viid(lldi->ports[0])) << 8; |
| 1483 | pr_info("cdev 0x%p,%s, pfvf %u.\n", |
| 1484 | cdev, lldi->ports[0]->name, cdev->pfvf); |
| 1485 | |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1486 | rc = cxgb4i_ddp_init(cdev); |
| 1487 | if (rc) { |
| 1488 | pr_info("t4 0x%p ddp init failed.\n", cdev); |
| 1489 | goto err_out; |
| 1490 | } |
| 1491 | rc = cxgb4i_ofld_init(cdev); |
| 1492 | if (rc) { |
| 1493 | pr_info("t4 0x%p ofld init failed.\n", cdev); |
| 1494 | goto err_out; |
| 1495 | } |
| 1496 | |
| 1497 | rc = cxgbi_hbas_add(cdev, CXGB4I_MAX_LUN, CXGBI_MAX_CONN, |
| 1498 | &cxgb4i_host_template, cxgb4i_stt); |
| 1499 | if (rc) |
| 1500 | goto err_out; |
| 1501 | |
| 1502 | for (i = 0; i < cdev->nports; i++) { |
| 1503 | pi = netdev_priv(lldi->ports[i]); |
| 1504 | cdev->hbas[i]->port_id = pi->port_id; |
| 1505 | } |
| 1506 | return cdev; |
| 1507 | |
| 1508 | err_out: |
| 1509 | cxgbi_device_unregister(cdev); |
| 1510 | return ERR_PTR(-ENOMEM); |
| 1511 | } |
| 1512 | |
| 1513 | #define RX_PULL_LEN 128 |
| 1514 | static int t4_uld_rx_handler(void *handle, const __be64 *rsp, |
| 1515 | const struct pkt_gl *pgl) |
| 1516 | { |
| 1517 | const struct cpl_act_establish *rpl; |
| 1518 | struct sk_buff *skb; |
| 1519 | unsigned int opc; |
| 1520 | struct cxgbi_device *cdev = handle; |
| 1521 | |
| 1522 | if (pgl == NULL) { |
| 1523 | unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; |
| 1524 | |
kxie@chelsio.com | 24d3f95 | 2010-09-23 16:43:23 -0700 | [diff] [blame] | 1525 | skb = alloc_wr(len, 0, GFP_ATOMIC); |
kxie@chelsio.com | 7b36b6e | 2010-08-16 20:55:53 -0700 | [diff] [blame] | 1526 | if (!skb) |
| 1527 | goto nomem; |
| 1528 | skb_copy_to_linear_data(skb, &rsp[1], len); |
| 1529 | } else { |
| 1530 | if (unlikely(*(u8 *)rsp != *(u8 *)pgl->va)) { |
| 1531 | pr_info("? FL 0x%p,RSS%#llx,FL %#llx,len %u.\n", |
| 1532 | pgl->va, be64_to_cpu(*rsp), |
| 1533 | be64_to_cpu(*(u64 *)pgl->va), |
| 1534 | pgl->tot_len); |
| 1535 | return 0; |
| 1536 | } |
| 1537 | skb = cxgb4_pktgl_to_skb(pgl, RX_PULL_LEN, RX_PULL_LEN); |
| 1538 | if (unlikely(!skb)) |
| 1539 | goto nomem; |
| 1540 | } |
| 1541 | |
| 1542 | rpl = (struct cpl_act_establish *)skb->data; |
| 1543 | opc = rpl->ot.opcode; |
| 1544 | log_debug(1 << CXGBI_DBG_TOE, |
| 1545 | "cdev %p, opcode 0x%x(0x%x,0x%x), skb %p.\n", |
| 1546 | cdev, opc, rpl->ot.opcode_tid, ntohl(rpl->ot.opcode_tid), skb); |
| 1547 | if (cxgb4i_cplhandlers[opc]) |
| 1548 | cxgb4i_cplhandlers[opc](cdev, skb); |
| 1549 | else { |
| 1550 | pr_err("No handler for opcode 0x%x.\n", opc); |
| 1551 | __kfree_skb(skb); |
| 1552 | } |
| 1553 | return 0; |
| 1554 | nomem: |
| 1555 | log_debug(1 << CXGBI_DBG_TOE, "OOM bailing out.\n"); |
| 1556 | return 1; |
| 1557 | } |
| 1558 | |
| 1559 | static int t4_uld_state_change(void *handle, enum cxgb4_state state) |
| 1560 | { |
| 1561 | struct cxgbi_device *cdev = handle; |
| 1562 | |
| 1563 | switch (state) { |
| 1564 | case CXGB4_STATE_UP: |
| 1565 | pr_info("cdev 0x%p, UP.\n", cdev); |
| 1566 | /* re-initialize */ |
| 1567 | break; |
| 1568 | case CXGB4_STATE_START_RECOVERY: |
| 1569 | pr_info("cdev 0x%p, RECOVERY.\n", cdev); |
| 1570 | /* close all connections */ |
| 1571 | break; |
| 1572 | case CXGB4_STATE_DOWN: |
| 1573 | pr_info("cdev 0x%p, DOWN.\n", cdev); |
| 1574 | break; |
| 1575 | case CXGB4_STATE_DETACH: |
| 1576 | pr_info("cdev 0x%p, DETACH.\n", cdev); |
| 1577 | break; |
| 1578 | default: |
| 1579 | pr_info("cdev 0x%p, unknown state %d.\n", cdev, state); |
| 1580 | break; |
| 1581 | } |
| 1582 | return 0; |
| 1583 | } |
| 1584 | |
| 1585 | static int __init cxgb4i_init_module(void) |
| 1586 | { |
| 1587 | int rc; |
| 1588 | |
| 1589 | printk(KERN_INFO "%s", version); |
| 1590 | |
| 1591 | rc = cxgbi_iscsi_init(&cxgb4i_iscsi_transport, &cxgb4i_stt); |
| 1592 | if (rc < 0) |
| 1593 | return rc; |
| 1594 | cxgb4_register_uld(CXGB4_ULD_ISCSI, &cxgb4i_uld_info); |
| 1595 | return 0; |
| 1596 | } |
| 1597 | |
| 1598 | static void __exit cxgb4i_exit_module(void) |
| 1599 | { |
| 1600 | cxgb4_unregister_uld(CXGB4_ULD_ISCSI); |
| 1601 | cxgbi_device_unregister_all(CXGBI_FLAG_DEV_T4); |
| 1602 | cxgbi_iscsi_cleanup(&cxgb4i_iscsi_transport, &cxgb4i_stt); |
| 1603 | } |
| 1604 | |
| 1605 | module_init(cxgb4i_init_module); |
| 1606 | module_exit(cxgb4i_exit_module); |