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7b36b6e0 | 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 | ||
7b36b6e0 | 16 | #include <linux/module.h> |
17 | #include <linux/moduleparam.h> | |
18 | #include <scsi/scsi_host.h> | |
19 | #include <net/tcp.h> | |
20 | #include <net/dst.h> | |
21 | #include <linux/netdevice.h> | |
759a0cc5 | 22 | #include <net/addrconf.h> |
7b36b6e0 | 23 | |
3bd3e8bf | 24 | #include "t4_regs.h" |
7b36b6e0 | 25 | #include "t4_msg.h" |
26 | #include "cxgb4.h" | |
27 | #include "cxgb4_uld.h" | |
28 | #include "t4fw_api.h" | |
29 | #include "l2t.h" | |
30 | #include "cxgb4i.h" | |
31 | ||
32 | static unsigned int dbg_level; | |
33 | ||
34 | #include "../libcxgbi.h" | |
35 | ||
36 | #define DRV_MODULE_NAME "cxgb4i" | |
3bd3e8bf KX |
37 | #define DRV_MODULE_DESC "Chelsio T4/T5 iSCSI Driver" |
38 | #define DRV_MODULE_VERSION "0.9.4" | |
7b36b6e0 | 39 | |
40 | static char version[] = | |
41 | DRV_MODULE_DESC " " DRV_MODULE_NAME | |
3bd3e8bf | 42 | " v" DRV_MODULE_VERSION "\n"; |
7b36b6e0 | 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 | | |
fdafd4df | 109 | CAP_PADDING_OFFLOAD | CAP_TEXT_NEGO, |
3128c6c7 | 110 | .attr_is_visible = cxgbi_attr_is_visible, |
7b36b6e0 | 111 | .get_host_param = cxgbi_get_host_param, |
112 | .set_host_param = cxgbi_set_host_param, | |
113 | /* session management */ | |
114 | .create_session = cxgbi_create_session, | |
115 | .destroy_session = cxgbi_destroy_session, | |
116 | .get_session_param = iscsi_session_get_param, | |
117 | /* connection management */ | |
118 | .create_conn = cxgbi_create_conn, | |
119 | .bind_conn = cxgbi_bind_conn, | |
120 | .destroy_conn = iscsi_tcp_conn_teardown, | |
121 | .start_conn = iscsi_conn_start, | |
122 | .stop_conn = iscsi_conn_stop, | |
c71b9b66 | 123 | .get_conn_param = iscsi_conn_get_param, |
7b36b6e0 | 124 | .set_param = cxgbi_set_conn_param, |
125 | .get_stats = cxgbi_get_conn_stats, | |
126 | /* pdu xmit req from user space */ | |
127 | .send_pdu = iscsi_conn_send_pdu, | |
128 | /* task */ | |
129 | .init_task = iscsi_tcp_task_init, | |
130 | .xmit_task = iscsi_tcp_task_xmit, | |
131 | .cleanup_task = cxgbi_cleanup_task, | |
132 | /* pdu */ | |
133 | .alloc_pdu = cxgbi_conn_alloc_pdu, | |
134 | .init_pdu = cxgbi_conn_init_pdu, | |
135 | .xmit_pdu = cxgbi_conn_xmit_pdu, | |
136 | .parse_pdu_itt = cxgbi_parse_pdu_itt, | |
137 | /* TCP connect/disconnect */ | |
c71b9b66 | 138 | .get_ep_param = cxgbi_get_ep_param, |
7b36b6e0 | 139 | .ep_connect = cxgbi_ep_connect, |
140 | .ep_poll = cxgbi_ep_poll, | |
141 | .ep_disconnect = cxgbi_ep_disconnect, | |
142 | /* Error recovery timeout call */ | |
143 | .session_recovery_timedout = iscsi_session_recovery_timedout, | |
144 | }; | |
145 | ||
146 | static struct scsi_transport_template *cxgb4i_stt; | |
147 | ||
148 | /* | |
149 | * CPL (Chelsio Protocol Language) defines a message passing interface between | |
150 | * the host driver and Chelsio asic. | |
151 | * The section below implments CPLs that related to iscsi tcp connection | |
152 | * open/close/abort and data send/receive. | |
153 | */ | |
759a0cc5 | 154 | |
7b36b6e0 | 155 | #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) |
156 | #define RCV_BUFSIZ_MASK 0x3FFU | |
157 | #define MAX_IMM_TX_PKT_LEN 128 | |
158 | ||
159 | static inline void set_queue(struct sk_buff *skb, unsigned int queue, | |
160 | const struct cxgbi_sock *csk) | |
161 | { | |
162 | skb->queue_mapping = queue; | |
163 | } | |
164 | ||
165 | static int push_tx_frames(struct cxgbi_sock *, int); | |
166 | ||
167 | /* | |
168 | * is_ofld_imm - check whether a packet can be sent as immediate data | |
169 | * @skb: the packet | |
170 | * | |
171 | * Returns true if a packet can be sent as an offload WR with immediate | |
172 | * data. We currently use the same limit as for Ethernet packets. | |
173 | */ | |
174 | static inline int is_ofld_imm(const struct sk_buff *skb) | |
175 | { | |
176 | return skb->len <= (MAX_IMM_TX_PKT_LEN - | |
177 | sizeof(struct fw_ofld_tx_data_wr)); | |
178 | } | |
179 | ||
180 | static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb, | |
181 | struct l2t_entry *e) | |
182 | { | |
3bd3e8bf | 183 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
759a0cc5 | 184 | int t4 = is_t4(lldi->adapter_type); |
7b36b6e0 | 185 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); |
186 | unsigned long long opt0; | |
187 | unsigned int opt2; | |
188 | unsigned int qid_atid = ((unsigned int)csk->atid) | | |
189 | (((unsigned int)csk->rss_qid) << 14); | |
190 | ||
191 | opt0 = KEEP_ALIVE(1) | | |
192 | WND_SCALE(wscale) | | |
193 | MSS_IDX(csk->mss_idx) | | |
194 | L2T_IDX(((struct l2t_entry *)csk->l2t)->idx) | | |
195 | TX_CHAN(csk->tx_chan) | | |
196 | SMAC_SEL(csk->smac_idx) | | |
197 | ULP_MODE(ULP_MODE_ISCSI) | | |
198 | RCV_BUFSIZ(cxgb4i_rcv_win >> 10); | |
199 | opt2 = RX_CHANNEL(0) | | |
200 | RSS_QUEUE_VALID | | |
3bd3e8bf | 201 | (1 << 20) | |
7b36b6e0 | 202 | RSS_QUEUE(csk->rss_qid); |
203 | ||
3bd3e8bf KX |
204 | if (is_t4(lldi->adapter_type)) { |
205 | struct cpl_act_open_req *req = | |
206 | (struct cpl_act_open_req *)skb->head; | |
207 | ||
3bd3e8bf KX |
208 | INIT_TP_WR(req, 0); |
209 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
7b36b6e0 | 210 | qid_atid)); |
3bd3e8bf KX |
211 | req->local_port = csk->saddr.sin_port; |
212 | req->peer_port = csk->daddr.sin_port; | |
213 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
214 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
215 | req->opt0 = cpu_to_be64(opt0); | |
ac0245ff KX |
216 | req->params = cpu_to_be32(cxgb4_select_ntuple( |
217 | csk->cdev->ports[csk->port_id], | |
218 | csk->l2t)); | |
3bd3e8bf KX |
219 | opt2 |= 1 << 22; |
220 | req->opt2 = cpu_to_be32(opt2); | |
7b36b6e0 | 221 | |
3bd3e8bf KX |
222 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
223 | "csk t4 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
224 | csk, &req->local_ip, ntohs(req->local_port), | |
225 | &req->peer_ip, ntohs(req->peer_port), | |
226 | csk->atid, csk->rss_qid); | |
227 | } else { | |
228 | struct cpl_t5_act_open_req *req = | |
229 | (struct cpl_t5_act_open_req *)skb->head; | |
230 | ||
3bd3e8bf KX |
231 | INIT_TP_WR(req, 0); |
232 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
233 | qid_atid)); | |
234 | req->local_port = csk->saddr.sin_port; | |
235 | req->peer_port = csk->daddr.sin_port; | |
236 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
237 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
238 | req->opt0 = cpu_to_be64(opt0); | |
ac0245ff KX |
239 | req->params = cpu_to_be64(V_FILTER_TUPLE( |
240 | cxgb4_select_ntuple( | |
241 | csk->cdev->ports[csk->port_id], | |
242 | csk->l2t))); | |
3bd3e8bf KX |
243 | opt2 |= 1 << 31; |
244 | req->opt2 = cpu_to_be32(opt2); | |
245 | ||
246 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
247 | "csk t5 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
248 | csk, &req->local_ip, ntohs(req->local_port), | |
249 | &req->peer_ip, ntohs(req->peer_port), | |
250 | csk->atid, csk->rss_qid); | |
251 | } | |
252 | ||
253 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); | |
759a0cc5 AB |
254 | |
255 | pr_info_ipaddr("t%d csk 0x%p,%u,0x%lx,%u, rss_qid %u.\n", | |
256 | (&csk->saddr), (&csk->daddr), t4 ? 4 : 5, csk, | |
257 | csk->state, csk->flags, csk->atid, csk->rss_qid); | |
258 | ||
259 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
260 | } | |
261 | ||
262 | static void send_act_open_req6(struct cxgbi_sock *csk, struct sk_buff *skb, | |
263 | struct l2t_entry *e) | |
264 | { | |
265 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); | |
266 | int t4 = is_t4(lldi->adapter_type); | |
267 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); | |
268 | unsigned long long opt0; | |
269 | unsigned int opt2; | |
270 | unsigned int qid_atid = ((unsigned int)csk->atid) | | |
271 | (((unsigned int)csk->rss_qid) << 14); | |
272 | ||
273 | opt0 = KEEP_ALIVE(1) | | |
274 | WND_SCALE(wscale) | | |
275 | MSS_IDX(csk->mss_idx) | | |
276 | L2T_IDX(((struct l2t_entry *)csk->l2t)->idx) | | |
277 | TX_CHAN(csk->tx_chan) | | |
278 | SMAC_SEL(csk->smac_idx) | | |
279 | ULP_MODE(ULP_MODE_ISCSI) | | |
280 | RCV_BUFSIZ(cxgb4i_rcv_win >> 10); | |
281 | ||
282 | opt2 = RX_CHANNEL(0) | | |
283 | RSS_QUEUE_VALID | | |
284 | RX_FC_DISABLE | | |
285 | RSS_QUEUE(csk->rss_qid); | |
286 | ||
287 | if (t4) { | |
288 | struct cpl_act_open_req6 *req = | |
289 | (struct cpl_act_open_req6 *)skb->head; | |
290 | ||
291 | INIT_TP_WR(req, 0); | |
292 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
293 | qid_atid)); | |
294 | req->local_port = csk->saddr6.sin6_port; | |
295 | req->peer_port = csk->daddr6.sin6_port; | |
296 | ||
297 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
298 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
299 | 8); | |
300 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
301 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
302 | 8); | |
303 | ||
304 | req->opt0 = cpu_to_be64(opt0); | |
305 | ||
306 | opt2 |= RX_FC_VALID; | |
307 | req->opt2 = cpu_to_be32(opt2); | |
308 | ||
309 | req->params = cpu_to_be32(cxgb4_select_ntuple( | |
310 | csk->cdev->ports[csk->port_id], | |
311 | csk->l2t)); | |
312 | } else { | |
313 | struct cpl_t5_act_open_req6 *req = | |
314 | (struct cpl_t5_act_open_req6 *)skb->head; | |
315 | ||
316 | INIT_TP_WR(req, 0); | |
317 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
318 | qid_atid)); | |
319 | req->local_port = csk->saddr6.sin6_port; | |
320 | req->peer_port = csk->daddr6.sin6_port; | |
321 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
322 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
323 | 8); | |
324 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
325 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
326 | 8); | |
327 | req->opt0 = cpu_to_be64(opt0); | |
328 | ||
329 | opt2 |= T5_OPT_2_VALID; | |
330 | req->opt2 = cpu_to_be32(opt2); | |
331 | ||
332 | req->params = cpu_to_be64(V_FILTER_TUPLE(cxgb4_select_ntuple( | |
333 | csk->cdev->ports[csk->port_id], | |
334 | csk->l2t))); | |
335 | } | |
336 | ||
337 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); | |
338 | ||
339 | pr_info("t%d csk 0x%p,%u,0x%lx,%u, [%pI6]:%u-[%pI6]:%u, rss_qid %u.\n", | |
340 | t4 ? 4 : 5, csk, csk->state, csk->flags, csk->atid, | |
341 | &csk->saddr6.sin6_addr, ntohs(csk->saddr.sin_port), | |
342 | &csk->daddr6.sin6_addr, ntohs(csk->daddr.sin_port), | |
343 | csk->rss_qid); | |
344 | ||
7b36b6e0 | 345 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); |
346 | } | |
347 | ||
348 | static void send_close_req(struct cxgbi_sock *csk) | |
349 | { | |
350 | struct sk_buff *skb = csk->cpl_close; | |
351 | struct cpl_close_con_req *req = (struct cpl_close_con_req *)skb->head; | |
352 | unsigned int tid = csk->tid; | |
353 | ||
354 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
355 | "csk 0x%p,%u,0x%lx, tid %u.\n", | |
356 | csk, csk->state, csk->flags, csk->tid); | |
357 | csk->cpl_close = NULL; | |
358 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); | |
359 | INIT_TP_WR(req, tid); | |
360 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid)); | |
361 | req->rsvd = 0; | |
362 | ||
363 | cxgbi_sock_skb_entail(csk, skb); | |
364 | if (csk->state >= CTP_ESTABLISHED) | |
365 | push_tx_frames(csk, 1); | |
366 | } | |
367 | ||
368 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
369 | { | |
370 | struct cxgbi_sock *csk = (struct cxgbi_sock *)handle; | |
371 | struct cpl_abort_req *req; | |
372 | ||
373 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
374 | "csk 0x%p,%u,0x%lx, tid %u, abort.\n", | |
375 | csk, csk->state, csk->flags, csk->tid); | |
376 | req = (struct cpl_abort_req *)skb->data; | |
377 | req->cmd = CPL_ABORT_NO_RST; | |
378 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
379 | } | |
380 | ||
381 | static void send_abort_req(struct cxgbi_sock *csk) | |
382 | { | |
383 | struct cpl_abort_req *req; | |
384 | struct sk_buff *skb = csk->cpl_abort_req; | |
385 | ||
386 | if (unlikely(csk->state == CTP_ABORTING) || !skb || !csk->cdev) | |
387 | return; | |
388 | cxgbi_sock_set_state(csk, CTP_ABORTING); | |
389 | cxgbi_sock_set_flag(csk, CTPF_ABORT_RPL_PENDING); | |
390 | cxgbi_sock_purge_write_queue(csk); | |
391 | ||
392 | csk->cpl_abort_req = NULL; | |
393 | req = (struct cpl_abort_req *)skb->head; | |
394 | set_queue(skb, CPL_PRIORITY_DATA, csk); | |
395 | req->cmd = CPL_ABORT_SEND_RST; | |
396 | t4_set_arp_err_handler(skb, csk, abort_arp_failure); | |
397 | INIT_TP_WR(req, csk->tid); | |
398 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, csk->tid)); | |
399 | req->rsvd0 = htonl(csk->snd_nxt); | |
400 | req->rsvd1 = !cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT); | |
401 | ||
402 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
403 | "csk 0x%p,%u,0x%lx,%u, snd_nxt %u, 0x%x.\n", | |
404 | csk, csk->state, csk->flags, csk->tid, csk->snd_nxt, | |
405 | req->rsvd1); | |
406 | ||
407 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
408 | } | |
409 | ||
410 | static void send_abort_rpl(struct cxgbi_sock *csk, int rst_status) | |
411 | { | |
412 | struct sk_buff *skb = csk->cpl_abort_rpl; | |
413 | struct cpl_abort_rpl *rpl = (struct cpl_abort_rpl *)skb->head; | |
414 | ||
415 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
416 | "csk 0x%p,%u,0x%lx,%u, status %d.\n", | |
417 | csk, csk->state, csk->flags, csk->tid, rst_status); | |
418 | ||
419 | csk->cpl_abort_rpl = NULL; | |
420 | set_queue(skb, CPL_PRIORITY_DATA, csk); | |
421 | INIT_TP_WR(rpl, csk->tid); | |
422 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, csk->tid)); | |
423 | rpl->cmd = rst_status; | |
424 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
425 | } | |
426 | ||
427 | /* | |
428 | * CPL connection rx data ack: host -> | |
429 | * Send RX credits through an RX_DATA_ACK CPL message. Returns the number of | |
430 | * credits sent. | |
431 | */ | |
432 | static u32 send_rx_credits(struct cxgbi_sock *csk, u32 credits) | |
433 | { | |
434 | struct sk_buff *skb; | |
435 | struct cpl_rx_data_ack *req; | |
436 | ||
437 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
438 | "csk 0x%p,%u,0x%lx,%u, credit %u.\n", | |
439 | csk, csk->state, csk->flags, csk->tid, credits); | |
440 | ||
24d3f95a | 441 | skb = alloc_wr(sizeof(*req), 0, GFP_ATOMIC); |
7b36b6e0 | 442 | if (!skb) { |
443 | pr_info("csk 0x%p, credit %u, OOM.\n", csk, credits); | |
444 | return 0; | |
445 | } | |
446 | req = (struct cpl_rx_data_ack *)skb->head; | |
447 | ||
448 | set_wr_txq(skb, CPL_PRIORITY_ACK, csk->port_id); | |
449 | INIT_TP_WR(req, csk->tid); | |
450 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
451 | csk->tid)); | |
452 | req->credit_dack = cpu_to_be32(RX_CREDITS(credits) | RX_FORCE_ACK(1)); | |
453 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
454 | return credits; | |
455 | } | |
456 | ||
457 | /* | |
458 | * sgl_len - calculates the size of an SGL of the given capacity | |
459 | * @n: the number of SGL entries | |
460 | * Calculates the number of flits needed for a scatter/gather list that | |
461 | * can hold the given number of entries. | |
462 | */ | |
463 | static inline unsigned int sgl_len(unsigned int n) | |
464 | { | |
465 | n--; | |
466 | return (3 * n) / 2 + (n & 1) + 2; | |
467 | } | |
468 | ||
469 | /* | |
470 | * calc_tx_flits_ofld - calculate # of flits for an offload packet | |
471 | * @skb: the packet | |
472 | * | |
473 | * Returns the number of flits needed for the given offload packet. | |
474 | * These packets are already fully constructed and no additional headers | |
475 | * will be added. | |
476 | */ | |
477 | static inline unsigned int calc_tx_flits_ofld(const struct sk_buff *skb) | |
478 | { | |
479 | unsigned int flits, cnt; | |
480 | ||
481 | if (is_ofld_imm(skb)) | |
482 | return DIV_ROUND_UP(skb->len, 8); | |
483 | flits = skb_transport_offset(skb) / 8; | |
484 | cnt = skb_shinfo(skb)->nr_frags; | |
499e2e6f | 485 | if (skb_tail_pointer(skb) != skb_transport_header(skb)) |
7b36b6e0 | 486 | cnt++; |
487 | return flits + sgl_len(cnt); | |
488 | } | |
489 | ||
490 | static inline void send_tx_flowc_wr(struct cxgbi_sock *csk) | |
491 | { | |
492 | struct sk_buff *skb; | |
493 | struct fw_flowc_wr *flowc; | |
494 | int flowclen, i; | |
495 | ||
496 | flowclen = 80; | |
24d3f95a | 497 | skb = alloc_wr(flowclen, 0, GFP_ATOMIC); |
7b36b6e0 | 498 | flowc = (struct fw_flowc_wr *)skb->head; |
499 | flowc->op_to_nparams = | |
500 | htonl(FW_WR_OP(FW_FLOWC_WR) | FW_FLOWC_WR_NPARAMS(8)); | |
501 | flowc->flowid_len16 = | |
502 | htonl(FW_WR_LEN16(DIV_ROUND_UP(72, 16)) | | |
503 | FW_WR_FLOWID(csk->tid)); | |
504 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; | |
e27d6169 | 505 | flowc->mnemval[0].val = htonl(csk->cdev->pfvf); |
7b36b6e0 | 506 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
507 | flowc->mnemval[1].val = htonl(csk->tx_chan); | |
508 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
509 | flowc->mnemval[2].val = htonl(csk->tx_chan); | |
510 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
511 | flowc->mnemval[3].val = htonl(csk->rss_qid); | |
512 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
513 | flowc->mnemval[4].val = htonl(csk->snd_nxt); | |
514 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
515 | flowc->mnemval[5].val = htonl(csk->rcv_nxt); | |
516 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
517 | flowc->mnemval[6].val = htonl(cxgb4i_snd_win); | |
518 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; | |
519 | flowc->mnemval[7].val = htonl(csk->advmss); | |
520 | flowc->mnemval[8].mnemonic = 0; | |
521 | flowc->mnemval[8].val = 0; | |
522 | for (i = 0; i < 9; i++) { | |
523 | flowc->mnemval[i].r4[0] = 0; | |
524 | flowc->mnemval[i].r4[1] = 0; | |
525 | flowc->mnemval[i].r4[2] = 0; | |
526 | } | |
527 | set_queue(skb, CPL_PRIORITY_DATA, csk); | |
528 | ||
529 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
530 | "csk 0x%p, tid 0x%x, %u,%u,%u,%u,%u,%u,%u.\n", | |
531 | csk, csk->tid, 0, csk->tx_chan, csk->rss_qid, | |
532 | csk->snd_nxt, csk->rcv_nxt, cxgb4i_snd_win, | |
533 | csk->advmss); | |
534 | ||
535 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
536 | } | |
537 | ||
538 | static inline void make_tx_data_wr(struct cxgbi_sock *csk, struct sk_buff *skb, | |
539 | int dlen, int len, u32 credits, int compl) | |
540 | { | |
541 | struct fw_ofld_tx_data_wr *req; | |
542 | unsigned int submode = cxgbi_skcb_ulp_mode(skb) & 3; | |
543 | unsigned int wr_ulp_mode = 0; | |
544 | ||
545 | req = (struct fw_ofld_tx_data_wr *)__skb_push(skb, sizeof(*req)); | |
546 | ||
547 | if (is_ofld_imm(skb)) { | |
548 | req->op_to_immdlen = htonl(FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
549 | FW_WR_COMPL(1) | | |
550 | FW_WR_IMMDLEN(dlen)); | |
551 | req->flowid_len16 = htonl(FW_WR_FLOWID(csk->tid) | | |
552 | FW_WR_LEN16(credits)); | |
553 | } else { | |
554 | req->op_to_immdlen = | |
555 | cpu_to_be32(FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
556 | FW_WR_COMPL(1) | | |
557 | FW_WR_IMMDLEN(0)); | |
558 | req->flowid_len16 = | |
559 | cpu_to_be32(FW_WR_FLOWID(csk->tid) | | |
560 | FW_WR_LEN16(credits)); | |
561 | } | |
562 | if (submode) | |
563 | wr_ulp_mode = FW_OFLD_TX_DATA_WR_ULPMODE(ULP2_MODE_ISCSI) | | |
564 | FW_OFLD_TX_DATA_WR_ULPSUBMODE(submode); | |
6aca4112 KX |
565 | req->tunnel_to_proxy = htonl(wr_ulp_mode | |
566 | FW_OFLD_TX_DATA_WR_SHOVE(skb_peek(&csk->write_queue) ? 0 : 1)); | |
7b36b6e0 | 567 | req->plen = htonl(len); |
568 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) | |
569 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
570 | } | |
571 | ||
572 | static void arp_failure_skb_discard(void *handle, struct sk_buff *skb) | |
573 | { | |
574 | kfree_skb(skb); | |
575 | } | |
576 | ||
577 | static int push_tx_frames(struct cxgbi_sock *csk, int req_completion) | |
578 | { | |
579 | int total_size = 0; | |
580 | struct sk_buff *skb; | |
581 | ||
582 | if (unlikely(csk->state < CTP_ESTABLISHED || | |
583 | csk->state == CTP_CLOSE_WAIT_1 || csk->state >= CTP_ABORTING)) { | |
584 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK | | |
585 | 1 << CXGBI_DBG_PDU_TX, | |
586 | "csk 0x%p,%u,0x%lx,%u, in closing state.\n", | |
587 | csk, csk->state, csk->flags, csk->tid); | |
588 | return 0; | |
589 | } | |
590 | ||
591 | while (csk->wr_cred && (skb = skb_peek(&csk->write_queue)) != NULL) { | |
592 | int dlen = skb->len; | |
593 | int len = skb->len; | |
594 | unsigned int credits_needed; | |
595 | ||
596 | skb_reset_transport_header(skb); | |
597 | if (is_ofld_imm(skb)) | |
598 | credits_needed = DIV_ROUND_UP(dlen + | |
599 | sizeof(struct fw_ofld_tx_data_wr), 16); | |
600 | else | |
601 | credits_needed = DIV_ROUND_UP(8*calc_tx_flits_ofld(skb) | |
602 | + sizeof(struct fw_ofld_tx_data_wr), | |
603 | 16); | |
604 | ||
605 | if (csk->wr_cred < credits_needed) { | |
606 | log_debug(1 << CXGBI_DBG_PDU_TX, | |
607 | "csk 0x%p, skb %u/%u, wr %d < %u.\n", | |
608 | csk, skb->len, skb->data_len, | |
609 | credits_needed, csk->wr_cred); | |
610 | break; | |
611 | } | |
612 | __skb_unlink(skb, &csk->write_queue); | |
613 | set_queue(skb, CPL_PRIORITY_DATA, csk); | |
614 | skb->csum = credits_needed; | |
615 | csk->wr_cred -= credits_needed; | |
616 | csk->wr_una_cred += credits_needed; | |
617 | cxgbi_sock_enqueue_wr(csk, skb); | |
618 | ||
619 | log_debug(1 << CXGBI_DBG_PDU_TX, | |
620 | "csk 0x%p, skb %u/%u, wr %d, left %u, unack %u.\n", | |
621 | csk, skb->len, skb->data_len, credits_needed, | |
622 | csk->wr_cred, csk->wr_una_cred); | |
623 | ||
624 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) { | |
625 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
626 | send_tx_flowc_wr(csk); | |
627 | skb->csum += 5; | |
628 | csk->wr_cred -= 5; | |
629 | csk->wr_una_cred += 5; | |
630 | } | |
631 | len += cxgbi_ulp_extra_len(cxgbi_skcb_ulp_mode(skb)); | |
632 | make_tx_data_wr(csk, skb, dlen, len, credits_needed, | |
633 | req_completion); | |
634 | csk->snd_nxt += len; | |
635 | cxgbi_skcb_clear_flag(skb, SKCBF_TX_NEED_HDR); | |
636 | } | |
637 | total_size += skb->truesize; | |
638 | t4_set_arp_err_handler(skb, csk, arp_failure_skb_discard); | |
639 | ||
640 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_TX, | |
641 | "csk 0x%p,%u,0x%lx,%u, skb 0x%p, %u.\n", | |
642 | csk, csk->state, csk->flags, csk->tid, skb, len); | |
643 | ||
644 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
645 | } | |
646 | return total_size; | |
647 | } | |
648 | ||
649 | static inline void free_atid(struct cxgbi_sock *csk) | |
650 | { | |
651 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); | |
652 | ||
653 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) { | |
654 | cxgb4_free_atid(lldi->tids, csk->atid); | |
655 | cxgbi_sock_clear_flag(csk, CTPF_HAS_ATID); | |
656 | cxgbi_sock_put(csk); | |
657 | } | |
658 | } | |
659 | ||
660 | static void do_act_establish(struct cxgbi_device *cdev, struct sk_buff *skb) | |
661 | { | |
662 | struct cxgbi_sock *csk; | |
663 | struct cpl_act_establish *req = (struct cpl_act_establish *)skb->data; | |
664 | unsigned short tcp_opt = ntohs(req->tcp_opt); | |
665 | unsigned int tid = GET_TID(req); | |
666 | unsigned int atid = GET_TID_TID(ntohl(req->tos_atid)); | |
667 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
668 | struct tid_info *t = lldi->tids; | |
669 | u32 rcv_isn = be32_to_cpu(req->rcv_isn); | |
670 | ||
671 | csk = lookup_atid(t, atid); | |
672 | if (unlikely(!csk)) { | |
673 | pr_err("NO conn. for atid %u, cdev 0x%p.\n", atid, cdev); | |
674 | goto rel_skb; | |
675 | } | |
676 | ||
e27d6169 | 677 | if (csk->atid != atid) { |
678 | pr_err("bad conn atid %u, csk 0x%p,%u,0x%lx,tid %u, atid %u.\n", | |
679 | atid, csk, csk->state, csk->flags, csk->tid, csk->atid); | |
680 | goto rel_skb; | |
681 | } | |
682 | ||
759a0cc5 AB |
683 | pr_info_ipaddr("atid 0x%x, tid 0x%x, csk 0x%p,%u,0x%lx, isn %u.\n", |
684 | (&csk->saddr), (&csk->daddr), | |
685 | atid, tid, csk, csk->state, csk->flags, rcv_isn); | |
686 | ||
687 | module_put(THIS_MODULE); | |
7b36b6e0 | 688 | |
689 | cxgbi_sock_get(csk); | |
690 | csk->tid = tid; | |
691 | cxgb4_insert_tid(lldi->tids, csk, tid); | |
692 | cxgbi_sock_set_flag(csk, CTPF_HAS_TID); | |
693 | ||
694 | free_atid(csk); | |
695 | ||
696 | spin_lock_bh(&csk->lock); | |
697 | if (unlikely(csk->state != CTP_ACTIVE_OPEN)) | |
698 | pr_info("csk 0x%p,%u,0x%lx,%u, got EST.\n", | |
699 | csk, csk->state, csk->flags, csk->tid); | |
700 | ||
701 | if (csk->retry_timer.function) { | |
702 | del_timer(&csk->retry_timer); | |
703 | csk->retry_timer.function = NULL; | |
704 | } | |
705 | ||
706 | csk->copied_seq = csk->rcv_wup = csk->rcv_nxt = rcv_isn; | |
707 | /* | |
708 | * Causes the first RX_DATA_ACK to supply any Rx credits we couldn't | |
709 | * pass through opt0. | |
710 | */ | |
711 | if (cxgb4i_rcv_win > (RCV_BUFSIZ_MASK << 10)) | |
712 | csk->rcv_wup -= cxgb4i_rcv_win - (RCV_BUFSIZ_MASK << 10); | |
713 | ||
714 | csk->advmss = lldi->mtus[GET_TCPOPT_MSS(tcp_opt)] - 40; | |
715 | if (GET_TCPOPT_TSTAMP(tcp_opt)) | |
716 | csk->advmss -= 12; | |
717 | if (csk->advmss < 128) | |
718 | csk->advmss = 128; | |
719 | ||
720 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
721 | "csk 0x%p, mss_idx %u, advmss %u.\n", | |
722 | csk, GET_TCPOPT_MSS(tcp_opt), csk->advmss); | |
723 | ||
724 | cxgbi_sock_established(csk, ntohl(req->snd_isn), ntohs(req->tcp_opt)); | |
725 | ||
726 | if (unlikely(cxgbi_sock_flag(csk, CTPF_ACTIVE_CLOSE_NEEDED))) | |
727 | send_abort_req(csk); | |
728 | else { | |
729 | if (skb_queue_len(&csk->write_queue)) | |
730 | push_tx_frames(csk, 0); | |
731 | cxgbi_conn_tx_open(csk); | |
732 | } | |
733 | spin_unlock_bh(&csk->lock); | |
734 | ||
735 | rel_skb: | |
736 | __kfree_skb(skb); | |
737 | } | |
738 | ||
739 | static int act_open_rpl_status_to_errno(int status) | |
740 | { | |
741 | switch (status) { | |
742 | case CPL_ERR_CONN_RESET: | |
743 | return -ECONNREFUSED; | |
744 | case CPL_ERR_ARP_MISS: | |
745 | return -EHOSTUNREACH; | |
746 | case CPL_ERR_CONN_TIMEDOUT: | |
747 | return -ETIMEDOUT; | |
748 | case CPL_ERR_TCAM_FULL: | |
749 | return -ENOMEM; | |
750 | case CPL_ERR_CONN_EXIST: | |
751 | return -EADDRINUSE; | |
752 | default: | |
753 | return -EIO; | |
754 | } | |
755 | } | |
756 | ||
757 | static void csk_act_open_retry_timer(unsigned long data) | |
758 | { | |
759 | struct sk_buff *skb; | |
760 | struct cxgbi_sock *csk = (struct cxgbi_sock *)data; | |
3bd3e8bf | 761 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
759a0cc5 AB |
762 | void (*send_act_open_func)(struct cxgbi_sock *, struct sk_buff *, |
763 | struct l2t_entry *); | |
764 | int t4 = is_t4(lldi->adapter_type), size, size6; | |
7b36b6e0 | 765 | |
766 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
767 | "csk 0x%p,%u,0x%lx,%u.\n", | |
768 | csk, csk->state, csk->flags, csk->tid); | |
769 | ||
770 | cxgbi_sock_get(csk); | |
771 | spin_lock_bh(&csk->lock); | |
759a0cc5 AB |
772 | |
773 | if (t4) { | |
774 | size = sizeof(struct cpl_act_open_req); | |
775 | size6 = sizeof(struct cpl_act_open_req6); | |
776 | } else { | |
777 | size = sizeof(struct cpl_t5_act_open_req); | |
778 | size6 = sizeof(struct cpl_t5_act_open_req6); | |
779 | } | |
780 | ||
781 | if (csk->csk_family == AF_INET) { | |
782 | send_act_open_func = send_act_open_req; | |
783 | skb = alloc_wr(size, 0, GFP_ATOMIC); | |
784 | } else { | |
785 | send_act_open_func = send_act_open_req6; | |
786 | skb = alloc_wr(size6, 0, GFP_ATOMIC); | |
787 | } | |
788 | ||
7b36b6e0 | 789 | if (!skb) |
790 | cxgbi_sock_fail_act_open(csk, -ENOMEM); | |
791 | else { | |
792 | skb->sk = (struct sock *)csk; | |
793 | t4_set_arp_err_handler(skb, csk, | |
759a0cc5 AB |
794 | cxgbi_sock_act_open_req_arp_failure); |
795 | send_act_open_func(csk, skb, csk->l2t); | |
7b36b6e0 | 796 | } |
759a0cc5 | 797 | |
7b36b6e0 | 798 | spin_unlock_bh(&csk->lock); |
799 | cxgbi_sock_put(csk); | |
759a0cc5 | 800 | |
7b36b6e0 | 801 | } |
802 | ||
803 | static void do_act_open_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
804 | { | |
805 | struct cxgbi_sock *csk; | |
806 | struct cpl_act_open_rpl *rpl = (struct cpl_act_open_rpl *)skb->data; | |
807 | unsigned int tid = GET_TID(rpl); | |
808 | unsigned int atid = | |
809 | GET_TID_TID(GET_AOPEN_ATID(be32_to_cpu(rpl->atid_status))); | |
810 | unsigned int status = GET_AOPEN_STATUS(be32_to_cpu(rpl->atid_status)); | |
811 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
812 | struct tid_info *t = lldi->tids; | |
813 | ||
814 | csk = lookup_atid(t, atid); | |
815 | if (unlikely(!csk)) { | |
816 | pr_err("NO matching conn. atid %u, tid %u.\n", atid, tid); | |
817 | goto rel_skb; | |
818 | } | |
819 | ||
759a0cc5 AB |
820 | pr_info_ipaddr("tid %u/%u, status %u.\n" |
821 | "csk 0x%p,%u,0x%lx. ", (&csk->saddr), (&csk->daddr), | |
822 | atid, tid, status, csk, csk->state, csk->flags); | |
7b36b6e0 | 823 | |
150cca7c KX |
824 | if (status == CPL_ERR_RTX_NEG_ADVICE) |
825 | goto rel_skb; | |
826 | ||
7b36b6e0 | 827 | if (status && status != CPL_ERR_TCAM_FULL && |
828 | status != CPL_ERR_CONN_EXIST && | |
829 | status != CPL_ERR_ARP_MISS) | |
830 | cxgb4_remove_tid(lldi->tids, csk->port_id, GET_TID(rpl)); | |
831 | ||
832 | cxgbi_sock_get(csk); | |
833 | spin_lock_bh(&csk->lock); | |
834 | ||
835 | if (status == CPL_ERR_CONN_EXIST && | |
836 | csk->retry_timer.function != csk_act_open_retry_timer) { | |
837 | csk->retry_timer.function = csk_act_open_retry_timer; | |
838 | mod_timer(&csk->retry_timer, jiffies + HZ / 2); | |
839 | } else | |
840 | cxgbi_sock_fail_act_open(csk, | |
841 | act_open_rpl_status_to_errno(status)); | |
842 | ||
843 | spin_unlock_bh(&csk->lock); | |
844 | cxgbi_sock_put(csk); | |
845 | rel_skb: | |
846 | __kfree_skb(skb); | |
847 | } | |
848 | ||
849 | static void do_peer_close(struct cxgbi_device *cdev, struct sk_buff *skb) | |
850 | { | |
851 | struct cxgbi_sock *csk; | |
852 | struct cpl_peer_close *req = (struct cpl_peer_close *)skb->data; | |
853 | unsigned int tid = GET_TID(req); | |
854 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
855 | struct tid_info *t = lldi->tids; | |
856 | ||
857 | csk = lookup_tid(t, tid); | |
858 | if (unlikely(!csk)) { | |
859 | pr_err("can't find connection for tid %u.\n", tid); | |
860 | goto rel_skb; | |
861 | } | |
759a0cc5 AB |
862 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", |
863 | (&csk->saddr), (&csk->daddr), | |
864 | csk, csk->state, csk->flags, csk->tid); | |
7b36b6e0 | 865 | cxgbi_sock_rcv_peer_close(csk); |
866 | rel_skb: | |
867 | __kfree_skb(skb); | |
868 | } | |
869 | ||
870 | static void do_close_con_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
871 | { | |
872 | struct cxgbi_sock *csk; | |
873 | struct cpl_close_con_rpl *rpl = (struct cpl_close_con_rpl *)skb->data; | |
874 | unsigned int tid = GET_TID(rpl); | |
875 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
876 | struct tid_info *t = lldi->tids; | |
877 | ||
878 | csk = lookup_tid(t, tid); | |
879 | if (unlikely(!csk)) { | |
880 | pr_err("can't find connection for tid %u.\n", tid); | |
881 | goto rel_skb; | |
882 | } | |
759a0cc5 AB |
883 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", |
884 | (&csk->saddr), (&csk->daddr), | |
885 | csk, csk->state, csk->flags, csk->tid); | |
7b36b6e0 | 886 | cxgbi_sock_rcv_close_conn_rpl(csk, ntohl(rpl->snd_nxt)); |
887 | rel_skb: | |
888 | __kfree_skb(skb); | |
889 | } | |
890 | ||
891 | static int abort_status_to_errno(struct cxgbi_sock *csk, int abort_reason, | |
892 | int *need_rst) | |
893 | { | |
894 | switch (abort_reason) { | |
895 | case CPL_ERR_BAD_SYN: /* fall through */ | |
896 | case CPL_ERR_CONN_RESET: | |
897 | return csk->state > CTP_ESTABLISHED ? | |
898 | -EPIPE : -ECONNRESET; | |
899 | case CPL_ERR_XMIT_TIMEDOUT: | |
900 | case CPL_ERR_PERSIST_TIMEDOUT: | |
901 | case CPL_ERR_FINWAIT2_TIMEDOUT: | |
902 | case CPL_ERR_KEEPALIVE_TIMEDOUT: | |
903 | return -ETIMEDOUT; | |
904 | default: | |
905 | return -EIO; | |
906 | } | |
907 | } | |
908 | ||
909 | static void do_abort_req_rss(struct cxgbi_device *cdev, struct sk_buff *skb) | |
910 | { | |
911 | struct cxgbi_sock *csk; | |
912 | struct cpl_abort_req_rss *req = (struct cpl_abort_req_rss *)skb->data; | |
913 | unsigned int tid = GET_TID(req); | |
914 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
915 | struct tid_info *t = lldi->tids; | |
916 | int rst_status = CPL_ABORT_NO_RST; | |
917 | ||
918 | csk = lookup_tid(t, tid); | |
919 | if (unlikely(!csk)) { | |
920 | pr_err("can't find connection for tid %u.\n", tid); | |
921 | goto rel_skb; | |
922 | } | |
923 | ||
759a0cc5 AB |
924 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", |
925 | (&csk->saddr), (&csk->daddr), | |
926 | csk, csk->state, csk->flags, csk->tid, req->status); | |
7b36b6e0 | 927 | |
928 | if (req->status == CPL_ERR_RTX_NEG_ADVICE || | |
929 | req->status == CPL_ERR_PERSIST_NEG_ADVICE) | |
930 | goto rel_skb; | |
931 | ||
932 | cxgbi_sock_get(csk); | |
933 | spin_lock_bh(&csk->lock); | |
934 | ||
935 | if (!cxgbi_sock_flag(csk, CTPF_ABORT_REQ_RCVD)) { | |
936 | cxgbi_sock_set_flag(csk, CTPF_ABORT_REQ_RCVD); | |
937 | cxgbi_sock_set_state(csk, CTP_ABORTING); | |
938 | goto done; | |
939 | } | |
940 | ||
941 | cxgbi_sock_clear_flag(csk, CTPF_ABORT_REQ_RCVD); | |
942 | send_abort_rpl(csk, rst_status); | |
943 | ||
944 | if (!cxgbi_sock_flag(csk, CTPF_ABORT_RPL_PENDING)) { | |
945 | csk->err = abort_status_to_errno(csk, req->status, &rst_status); | |
946 | cxgbi_sock_closed(csk); | |
947 | } | |
948 | done: | |
949 | spin_unlock_bh(&csk->lock); | |
950 | cxgbi_sock_put(csk); | |
951 | rel_skb: | |
952 | __kfree_skb(skb); | |
953 | } | |
954 | ||
955 | static void do_abort_rpl_rss(struct cxgbi_device *cdev, struct sk_buff *skb) | |
956 | { | |
957 | struct cxgbi_sock *csk; | |
958 | struct cpl_abort_rpl_rss *rpl = (struct cpl_abort_rpl_rss *)skb->data; | |
959 | unsigned int tid = GET_TID(rpl); | |
960 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
961 | struct tid_info *t = lldi->tids; | |
962 | ||
963 | csk = lookup_tid(t, tid); | |
964 | if (!csk) | |
965 | goto rel_skb; | |
966 | ||
759a0cc5 AB |
967 | if (csk) |
968 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", | |
969 | (&csk->saddr), (&csk->daddr), csk, | |
970 | csk->state, csk->flags, csk->tid, rpl->status); | |
7b36b6e0 | 971 | |
972 | if (rpl->status == CPL_ERR_ABORT_FAILED) | |
973 | goto rel_skb; | |
974 | ||
975 | cxgbi_sock_rcv_abort_rpl(csk); | |
976 | rel_skb: | |
977 | __kfree_skb(skb); | |
978 | } | |
979 | ||
980 | static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb) | |
981 | { | |
982 | struct cxgbi_sock *csk; | |
983 | struct cpl_iscsi_hdr *cpl = (struct cpl_iscsi_hdr *)skb->data; | |
984 | unsigned short pdu_len_ddp = be16_to_cpu(cpl->pdu_len_ddp); | |
985 | unsigned int tid = GET_TID(cpl); | |
986 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
987 | struct tid_info *t = lldi->tids; | |
7b36b6e0 | 988 | |
989 | csk = lookup_tid(t, tid); | |
990 | if (unlikely(!csk)) { | |
991 | pr_err("can't find conn. for tid %u.\n", tid); | |
992 | goto rel_skb; | |
993 | } | |
994 | ||
995 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
996 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p,%u, 0x%x.\n", | |
997 | csk, csk->state, csk->flags, csk->tid, skb, skb->len, | |
998 | pdu_len_ddp); | |
999 | ||
1000 | spin_lock_bh(&csk->lock); | |
1001 | ||
1002 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1003 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1004 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1005 | csk, csk->state, csk->flags, csk->tid); | |
1006 | if (csk->state != CTP_ABORTING) | |
1007 | goto abort_conn; | |
1008 | else | |
1009 | goto discard; | |
1010 | } | |
1011 | ||
1012 | cxgbi_skcb_tcp_seq(skb) = ntohl(cpl->seq); | |
e27d6169 | 1013 | cxgbi_skcb_flags(skb) = 0; |
1014 | ||
7b36b6e0 | 1015 | skb_reset_transport_header(skb); |
1016 | __skb_pull(skb, sizeof(*cpl)); | |
1017 | __pskb_trim(skb, ntohs(cpl->len)); | |
1018 | ||
1019 | if (!csk->skb_ulp_lhdr) { | |
1020 | unsigned char *bhs; | |
3bd3e8bf | 1021 | unsigned int hlen, dlen, plen; |
7b36b6e0 | 1022 | |
1023 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1024 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p header.\n", | |
1025 | csk, csk->state, csk->flags, csk->tid, skb); | |
1026 | csk->skb_ulp_lhdr = skb; | |
e27d6169 | 1027 | cxgbi_skcb_set_flag(skb, SKCBF_RX_HDR); |
7b36b6e0 | 1028 | |
e27d6169 | 1029 | if (cxgbi_skcb_tcp_seq(skb) != csk->rcv_nxt) { |
7b36b6e0 | 1030 | pr_info("tid %u, CPL_ISCSI_HDR, bad seq, 0x%x/0x%x.\n", |
e27d6169 | 1031 | csk->tid, cxgbi_skcb_tcp_seq(skb), |
7b36b6e0 | 1032 | csk->rcv_nxt); |
1033 | goto abort_conn; | |
1034 | } | |
1035 | ||
e27d6169 | 1036 | bhs = skb->data; |
7b36b6e0 | 1037 | hlen = ntohs(cpl->len); |
1038 | dlen = ntohl(*(unsigned int *)(bhs + 4)) & 0xFFFFFF; | |
1039 | ||
3bd3e8bf KX |
1040 | plen = ISCSI_PDU_LEN(pdu_len_ddp); |
1041 | if (is_t4(lldi->adapter_type)) | |
1042 | plen -= 40; | |
1043 | ||
1044 | if ((hlen + dlen) != plen) { | |
7b36b6e0 | 1045 | pr_info("tid 0x%x, CPL_ISCSI_HDR, pdu len " |
1046 | "mismatch %u != %u + %u, seq 0x%x.\n", | |
3bd3e8bf KX |
1047 | csk->tid, plen, hlen, dlen, |
1048 | cxgbi_skcb_tcp_seq(skb)); | |
7b36b6e0 | 1049 | goto abort_conn; |
1050 | } | |
1051 | ||
1052 | cxgbi_skcb_rx_pdulen(skb) = (hlen + dlen + 3) & (~0x3); | |
1053 | if (dlen) | |
1054 | cxgbi_skcb_rx_pdulen(skb) += csk->dcrc_len; | |
1055 | csk->rcv_nxt += cxgbi_skcb_rx_pdulen(skb); | |
1056 | ||
1057 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1058 | "csk 0x%p, skb 0x%p, 0x%x,%u+%u,0x%x,0x%x.\n", | |
1059 | csk, skb, *bhs, hlen, dlen, | |
1060 | ntohl(*((unsigned int *)(bhs + 16))), | |
1061 | ntohl(*((unsigned int *)(bhs + 24)))); | |
1062 | ||
1063 | } else { | |
e27d6169 | 1064 | struct sk_buff *lskb = csk->skb_ulp_lhdr; |
7b36b6e0 | 1065 | |
e27d6169 | 1066 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA); |
7b36b6e0 | 1067 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
1068 | "csk 0x%p,%u,0x%lx, skb 0x%p data, 0x%p.\n", | |
1069 | csk, csk->state, csk->flags, skb, lskb); | |
1070 | } | |
1071 | ||
1072 | __skb_queue_tail(&csk->receive_queue, skb); | |
1073 | spin_unlock_bh(&csk->lock); | |
1074 | return; | |
1075 | ||
1076 | abort_conn: | |
1077 | send_abort_req(csk); | |
1078 | discard: | |
1079 | spin_unlock_bh(&csk->lock); | |
1080 | rel_skb: | |
1081 | __kfree_skb(skb); | |
1082 | } | |
1083 | ||
1084 | static void do_rx_data_ddp(struct cxgbi_device *cdev, | |
1085 | struct sk_buff *skb) | |
1086 | { | |
1087 | struct cxgbi_sock *csk; | |
1088 | struct sk_buff *lskb; | |
1089 | struct cpl_rx_data_ddp *rpl = (struct cpl_rx_data_ddp *)skb->data; | |
1090 | unsigned int tid = GET_TID(rpl); | |
1091 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1092 | struct tid_info *t = lldi->tids; | |
1093 | unsigned int status = ntohl(rpl->ddpvld); | |
1094 | ||
1095 | csk = lookup_tid(t, tid); | |
1096 | if (unlikely(!csk)) { | |
1097 | pr_err("can't find connection for tid %u.\n", tid); | |
1098 | goto rel_skb; | |
1099 | } | |
1100 | ||
1101 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1102 | "csk 0x%p,%u,0x%lx, skb 0x%p,0x%x, lhdr 0x%p.\n", | |
1103 | csk, csk->state, csk->flags, skb, status, csk->skb_ulp_lhdr); | |
1104 | ||
1105 | spin_lock_bh(&csk->lock); | |
1106 | ||
1107 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1108 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1109 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1110 | csk, csk->state, csk->flags, csk->tid); | |
1111 | if (csk->state != CTP_ABORTING) | |
1112 | goto abort_conn; | |
1113 | else | |
1114 | goto discard; | |
1115 | } | |
1116 | ||
1117 | if (!csk->skb_ulp_lhdr) { | |
1118 | pr_err("tid 0x%x, rcv RX_DATA_DDP w/o pdu bhs.\n", csk->tid); | |
1119 | goto abort_conn; | |
1120 | } | |
1121 | ||
1122 | lskb = csk->skb_ulp_lhdr; | |
1123 | csk->skb_ulp_lhdr = NULL; | |
1124 | ||
7b36b6e0 | 1125 | cxgbi_skcb_rx_ddigest(lskb) = ntohl(rpl->ulp_crc); |
1126 | ||
1127 | if (ntohs(rpl->len) != cxgbi_skcb_rx_pdulen(lskb)) | |
1128 | pr_info("tid 0x%x, RX_DATA_DDP pdulen %u != %u.\n", | |
1129 | csk->tid, ntohs(rpl->len), cxgbi_skcb_rx_pdulen(lskb)); | |
1130 | ||
1131 | if (status & (1 << CPL_RX_DDP_STATUS_HCRC_SHIFT)) { | |
e27d6169 | 1132 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, hcrc bad 0x%lx.\n", |
1133 | csk, lskb, status, cxgbi_skcb_flags(lskb)); | |
7b36b6e0 | 1134 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_HCRC_ERR); |
1135 | } | |
1136 | if (status & (1 << CPL_RX_DDP_STATUS_DCRC_SHIFT)) { | |
e27d6169 | 1137 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, dcrc bad 0x%lx.\n", |
1138 | csk, lskb, status, cxgbi_skcb_flags(lskb)); | |
7b36b6e0 | 1139 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DCRC_ERR); |
1140 | } | |
1141 | if (status & (1 << CPL_RX_DDP_STATUS_PAD_SHIFT)) { | |
1142 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1143 | "csk 0x%p, lhdr 0x%p, status 0x%x, pad bad.\n", | |
1144 | csk, lskb, status); | |
1145 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_PAD_ERR); | |
1146 | } | |
1147 | if ((status & (1 << CPL_RX_DDP_STATUS_DDP_SHIFT)) && | |
1148 | !cxgbi_skcb_test_flag(lskb, SKCBF_RX_DATA)) { | |
1149 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1150 | "csk 0x%p, lhdr 0x%p, 0x%x, data ddp'ed.\n", | |
1151 | csk, lskb, status); | |
1152 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA_DDPD); | |
1153 | } | |
1154 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1155 | "csk 0x%p, lskb 0x%p, f 0x%lx.\n", | |
1156 | csk, lskb, cxgbi_skcb_flags(lskb)); | |
1157 | ||
e27d6169 | 1158 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_STATUS); |
7b36b6e0 | 1159 | cxgbi_conn_pdu_ready(csk); |
1160 | spin_unlock_bh(&csk->lock); | |
1161 | goto rel_skb; | |
1162 | ||
1163 | abort_conn: | |
1164 | send_abort_req(csk); | |
1165 | discard: | |
1166 | spin_unlock_bh(&csk->lock); | |
1167 | rel_skb: | |
1168 | __kfree_skb(skb); | |
1169 | } | |
1170 | ||
1171 | static void do_fw4_ack(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1172 | { | |
1173 | struct cxgbi_sock *csk; | |
1174 | struct cpl_fw4_ack *rpl = (struct cpl_fw4_ack *)skb->data; | |
1175 | unsigned int tid = GET_TID(rpl); | |
1176 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1177 | struct tid_info *t = lldi->tids; | |
1178 | ||
1179 | csk = lookup_tid(t, tid); | |
1180 | if (unlikely(!csk)) | |
1181 | pr_err("can't find connection for tid %u.\n", tid); | |
1182 | else { | |
1183 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1184 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1185 | csk, csk->state, csk->flags, csk->tid); | |
1186 | cxgbi_sock_rcv_wr_ack(csk, rpl->credits, ntohl(rpl->snd_una), | |
1187 | rpl->seq_vld); | |
1188 | } | |
1189 | __kfree_skb(skb); | |
1190 | } | |
1191 | ||
1192 | static void do_set_tcb_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1193 | { | |
1194 | struct cpl_set_tcb_rpl *rpl = (struct cpl_set_tcb_rpl *)skb->data; | |
1195 | unsigned int tid = GET_TID(rpl); | |
1196 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1197 | struct tid_info *t = lldi->tids; | |
1198 | struct cxgbi_sock *csk; | |
1199 | ||
1200 | csk = lookup_tid(t, tid); | |
1201 | if (!csk) | |
1202 | pr_err("can't find conn. for tid %u.\n", tid); | |
1203 | ||
1204 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1205 | "csk 0x%p,%u,%lx,%u, status 0x%x.\n", | |
1206 | csk, csk->state, csk->flags, csk->tid, rpl->status); | |
1207 | ||
1208 | if (rpl->status != CPL_ERR_NONE) | |
1209 | pr_err("csk 0x%p,%u, SET_TCB_RPL status %u.\n", | |
1210 | csk, tid, rpl->status); | |
1211 | ||
1212 | __kfree_skb(skb); | |
1213 | } | |
1214 | ||
1215 | static int alloc_cpls(struct cxgbi_sock *csk) | |
1216 | { | |
24d3f95a | 1217 | csk->cpl_close = alloc_wr(sizeof(struct cpl_close_con_req), |
1218 | 0, GFP_KERNEL); | |
7b36b6e0 | 1219 | if (!csk->cpl_close) |
1220 | return -ENOMEM; | |
1221 | ||
24d3f95a | 1222 | csk->cpl_abort_req = alloc_wr(sizeof(struct cpl_abort_req), |
1223 | 0, GFP_KERNEL); | |
7b36b6e0 | 1224 | if (!csk->cpl_abort_req) |
1225 | goto free_cpls; | |
1226 | ||
24d3f95a | 1227 | csk->cpl_abort_rpl = alloc_wr(sizeof(struct cpl_abort_rpl), |
1228 | 0, GFP_KERNEL); | |
7b36b6e0 | 1229 | if (!csk->cpl_abort_rpl) |
1230 | goto free_cpls; | |
1231 | return 0; | |
1232 | ||
1233 | free_cpls: | |
1234 | cxgbi_sock_free_cpl_skbs(csk); | |
1235 | return -ENOMEM; | |
1236 | } | |
1237 | ||
1238 | static inline void l2t_put(struct cxgbi_sock *csk) | |
1239 | { | |
1240 | if (csk->l2t) { | |
1241 | cxgb4_l2t_release(csk->l2t); | |
1242 | csk->l2t = NULL; | |
1243 | cxgbi_sock_put(csk); | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | static void release_offload_resources(struct cxgbi_sock *csk) | |
1248 | { | |
1249 | struct cxgb4_lld_info *lldi; | |
1250 | ||
1251 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1252 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1253 | csk, csk->state, csk->flags, csk->tid); | |
1254 | ||
1255 | cxgbi_sock_free_cpl_skbs(csk); | |
1256 | if (csk->wr_cred != csk->wr_max_cred) { | |
1257 | cxgbi_sock_purge_wr_queue(csk); | |
1258 | cxgbi_sock_reset_wr_list(csk); | |
1259 | } | |
1260 | ||
1261 | l2t_put(csk); | |
1262 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) | |
1263 | free_atid(csk); | |
1264 | else if (cxgbi_sock_flag(csk, CTPF_HAS_TID)) { | |
1265 | lldi = cxgbi_cdev_priv(csk->cdev); | |
1266 | cxgb4_remove_tid(lldi->tids, 0, csk->tid); | |
1267 | cxgbi_sock_clear_flag(csk, CTPF_HAS_TID); | |
1268 | cxgbi_sock_put(csk); | |
1269 | } | |
1270 | csk->dst = NULL; | |
1271 | csk->cdev = NULL; | |
1272 | } | |
1273 | ||
1274 | static int init_act_open(struct cxgbi_sock *csk) | |
1275 | { | |
1276 | struct cxgbi_device *cdev = csk->cdev; | |
1277 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1278 | struct net_device *ndev = cdev->ports[csk->port_id]; | |
7b36b6e0 | 1279 | struct sk_buff *skb = NULL; |
759a0cc5 AB |
1280 | struct neighbour *n = NULL; |
1281 | void *daddr; | |
7b36b6e0 | 1282 | unsigned int step; |
759a0cc5 AB |
1283 | unsigned int size, size6; |
1284 | int t4 = is_t4(lldi->adapter_type); | |
7b36b6e0 | 1285 | |
1286 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1287 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1288 | csk, csk->state, csk->flags, csk->tid); | |
1289 | ||
759a0cc5 AB |
1290 | if (csk->csk_family == AF_INET) |
1291 | daddr = &csk->daddr.sin_addr.s_addr; | |
e81fbf6c AB |
1292 | #if IS_ENABLED(CONFIG_IPV6) |
1293 | else if (csk->csk_family == AF_INET6) | |
759a0cc5 | 1294 | daddr = &csk->daddr6.sin6_addr; |
e81fbf6c AB |
1295 | #endif |
1296 | else { | |
1297 | pr_err("address family 0x%x not supported\n", csk->csk_family); | |
1298 | goto rel_resource; | |
1299 | } | |
759a0cc5 AB |
1300 | |
1301 | n = dst_neigh_lookup(csk->dst, daddr); | |
1302 | ||
1303 | if (!n) { | |
1304 | pr_err("%s, can't get neighbour of csk->dst.\n", ndev->name); | |
1305 | goto rel_resource; | |
1306 | } | |
1307 | ||
7b36b6e0 | 1308 | csk->atid = cxgb4_alloc_atid(lldi->tids, csk); |
1309 | if (csk->atid < 0) { | |
1310 | pr_err("%s, NO atid available.\n", ndev->name); | |
1311 | return -EINVAL; | |
1312 | } | |
1313 | cxgbi_sock_set_flag(csk, CTPF_HAS_ATID); | |
1314 | cxgbi_sock_get(csk); | |
1315 | ||
c4737377 | 1316 | n = dst_neigh_lookup(csk->dst, &csk->daddr.sin_addr.s_addr); |
51e059bd DM |
1317 | if (!n) { |
1318 | pr_err("%s, can't get neighbour of csk->dst.\n", ndev->name); | |
1319 | goto rel_resource; | |
1320 | } | |
1321 | csk->l2t = cxgb4_l2t_get(lldi->l2t, n, ndev, 0); | |
7b36b6e0 | 1322 | if (!csk->l2t) { |
1323 | pr_err("%s, cannot alloc l2t.\n", ndev->name); | |
1324 | goto rel_resource; | |
1325 | } | |
1326 | cxgbi_sock_get(csk); | |
1327 | ||
759a0cc5 AB |
1328 | if (t4) { |
1329 | size = sizeof(struct cpl_act_open_req); | |
1330 | size6 = sizeof(struct cpl_act_open_req6); | |
1331 | } else { | |
1332 | size = sizeof(struct cpl_t5_act_open_req); | |
1333 | size6 = sizeof(struct cpl_t5_act_open_req6); | |
1334 | } | |
1335 | ||
1336 | if (csk->csk_family == AF_INET) | |
1337 | skb = alloc_wr(size, 0, GFP_NOIO); | |
1338 | else | |
1339 | skb = alloc_wr(size6, 0, GFP_NOIO); | |
1340 | ||
7b36b6e0 | 1341 | if (!skb) |
1342 | goto rel_resource; | |
1343 | skb->sk = (struct sock *)csk; | |
1344 | t4_set_arp_err_handler(skb, csk, cxgbi_sock_act_open_req_arp_failure); | |
1345 | ||
1346 | if (!csk->mtu) | |
1347 | csk->mtu = dst_mtu(csk->dst); | |
1348 | cxgb4_best_mtu(lldi->mtus, csk->mtu, &csk->mss_idx); | |
1349 | csk->tx_chan = cxgb4_port_chan(ndev); | |
1350 | /* SMT two entries per row */ | |
1351 | csk->smac_idx = ((cxgb4_port_viid(ndev) & 0x7F)) << 1; | |
1352 | step = lldi->ntxq / lldi->nchan; | |
1353 | csk->txq_idx = cxgb4_port_idx(ndev) * step; | |
1354 | step = lldi->nrxq / lldi->nchan; | |
1355 | csk->rss_qid = lldi->rxq_ids[cxgb4_port_idx(ndev) * step]; | |
759a0cc5 AB |
1356 | csk->wr_cred = lldi->wr_cred - |
1357 | DIV_ROUND_UP(sizeof(struct cpl_abort_req), 16); | |
1358 | csk->wr_max_cred = csk->wr_cred; | |
7b36b6e0 | 1359 | csk->wr_una_cred = 0; |
1360 | cxgbi_sock_reset_wr_list(csk); | |
1361 | csk->err = 0; | |
7b36b6e0 | 1362 | |
759a0cc5 AB |
1363 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u,%u,%u, mtu %u,%u, smac %u.\n", |
1364 | (&csk->saddr), (&csk->daddr), csk, csk->state, | |
1365 | csk->flags, csk->tx_chan, csk->txq_idx, csk->rss_qid, | |
1366 | csk->mtu, csk->mss_idx, csk->smac_idx); | |
1367 | ||
1368 | /* must wait for either a act_open_rpl or act_open_establish */ | |
1369 | try_module_get(THIS_MODULE); | |
7b36b6e0 | 1370 | cxgbi_sock_set_state(csk, CTP_ACTIVE_OPEN); |
759a0cc5 AB |
1371 | if (csk->csk_family == AF_INET) |
1372 | send_act_open_req(csk, skb, csk->l2t); | |
1373 | else | |
1374 | send_act_open_req6(csk, skb, csk->l2t); | |
c4737377 | 1375 | neigh_release(n); |
759a0cc5 | 1376 | |
7b36b6e0 | 1377 | return 0; |
1378 | ||
1379 | rel_resource: | |
c4737377 DM |
1380 | if (n) |
1381 | neigh_release(n); | |
7b36b6e0 | 1382 | if (skb) |
1383 | __kfree_skb(skb); | |
1384 | return -EINVAL; | |
1385 | } | |
1386 | ||
1387 | cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = { | |
1388 | [CPL_ACT_ESTABLISH] = do_act_establish, | |
1389 | [CPL_ACT_OPEN_RPL] = do_act_open_rpl, | |
1390 | [CPL_PEER_CLOSE] = do_peer_close, | |
1391 | [CPL_ABORT_REQ_RSS] = do_abort_req_rss, | |
1392 | [CPL_ABORT_RPL_RSS] = do_abort_rpl_rss, | |
1393 | [CPL_CLOSE_CON_RPL] = do_close_con_rpl, | |
1394 | [CPL_FW4_ACK] = do_fw4_ack, | |
1395 | [CPL_ISCSI_HDR] = do_rx_iscsi_hdr, | |
3bd3e8bf | 1396 | [CPL_ISCSI_DATA] = do_rx_iscsi_hdr, |
7b36b6e0 | 1397 | [CPL_SET_TCB_RPL] = do_set_tcb_rpl, |
1398 | [CPL_RX_DATA_DDP] = do_rx_data_ddp, | |
3bd3e8bf | 1399 | [CPL_RX_ISCSI_DDP] = do_rx_data_ddp, |
7b36b6e0 | 1400 | }; |
1401 | ||
1402 | int cxgb4i_ofld_init(struct cxgbi_device *cdev) | |
1403 | { | |
1404 | int rc; | |
1405 | ||
1406 | if (cxgb4i_max_connect > CXGB4I_MAX_CONN) | |
1407 | cxgb4i_max_connect = CXGB4I_MAX_CONN; | |
1408 | ||
1409 | rc = cxgbi_device_portmap_create(cdev, cxgb4i_sport_base, | |
1410 | cxgb4i_max_connect); | |
1411 | if (rc < 0) | |
1412 | return rc; | |
1413 | ||
1414 | cdev->csk_release_offload_resources = release_offload_resources; | |
1415 | cdev->csk_push_tx_frames = push_tx_frames; | |
1416 | cdev->csk_send_abort_req = send_abort_req; | |
1417 | cdev->csk_send_close_req = send_close_req; | |
1418 | cdev->csk_send_rx_credits = send_rx_credits; | |
1419 | cdev->csk_alloc_cpls = alloc_cpls; | |
1420 | cdev->csk_init_act_open = init_act_open; | |
1421 | ||
1422 | pr_info("cdev 0x%p, offload up, added.\n", cdev); | |
1423 | return 0; | |
1424 | } | |
1425 | ||
1426 | /* | |
1427 | * functions to program the pagepod in h/w | |
1428 | */ | |
e27d6169 | 1429 | #define ULPMEM_IDATA_MAX_NPPODS 4 /* 256/PPOD_SIZE */ |
3bd3e8bf KX |
1430 | static inline void ulp_mem_io_set_hdr(struct cxgb4_lld_info *lldi, |
1431 | struct ulp_mem_io *req, | |
e27d6169 | 1432 | unsigned int wr_len, unsigned int dlen, |
1433 | unsigned int pm_addr) | |
7b36b6e0 | 1434 | { |
e27d6169 | 1435 | struct ulptx_idata *idata = (struct ulptx_idata *)(req + 1); |
7b36b6e0 | 1436 | |
1437 | INIT_ULPTX_WR(req, wr_len, 0, 0); | |
3bd3e8bf KX |
1438 | if (is_t4(lldi->adapter_type)) |
1439 | req->cmd = htonl(ULPTX_CMD(ULP_TX_MEM_WRITE) | | |
1440 | (ULP_MEMIO_ORDER(1))); | |
1441 | else | |
1442 | req->cmd = htonl(ULPTX_CMD(ULP_TX_MEM_WRITE) | | |
1443 | (V_T5_ULP_MEMIO_IMM(1))); | |
7b36b6e0 | 1444 | req->dlen = htonl(ULP_MEMIO_DATA_LEN(dlen >> 5)); |
1445 | req->lock_addr = htonl(ULP_MEMIO_ADDR(pm_addr >> 5)); | |
1446 | req->len16 = htonl(DIV_ROUND_UP(wr_len - sizeof(req->wr), 16)); | |
e27d6169 | 1447 | |
1448 | idata->cmd_more = htonl(ULPTX_CMD(ULP_TX_SC_IMM)); | |
1449 | idata->len = htonl(dlen); | |
7b36b6e0 | 1450 | } |
1451 | ||
e27d6169 | 1452 | static int ddp_ppod_write_idata(struct cxgbi_device *cdev, unsigned int port_id, |
7b36b6e0 | 1453 | struct cxgbi_pagepod_hdr *hdr, unsigned int idx, |
1454 | unsigned int npods, | |
1455 | struct cxgbi_gather_list *gl, | |
1456 | unsigned int gl_pidx) | |
1457 | { | |
1458 | struct cxgbi_ddp_info *ddp = cdev->ddp; | |
3bd3e8bf | 1459 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
7b36b6e0 | 1460 | struct sk_buff *skb; |
1461 | struct ulp_mem_io *req; | |
e27d6169 | 1462 | struct ulptx_idata *idata; |
7b36b6e0 | 1463 | struct cxgbi_pagepod *ppod; |
e27d6169 | 1464 | unsigned int pm_addr = idx * PPOD_SIZE + ddp->llimit; |
1465 | unsigned int dlen = PPOD_SIZE * npods; | |
1466 | unsigned int wr_len = roundup(sizeof(struct ulp_mem_io) + | |
1467 | sizeof(struct ulptx_idata) + dlen, 16); | |
7b36b6e0 | 1468 | unsigned int i; |
1469 | ||
e27d6169 | 1470 | skb = alloc_wr(wr_len, 0, GFP_ATOMIC); |
7b36b6e0 | 1471 | if (!skb) { |
1472 | pr_err("cdev 0x%p, idx %u, npods %u, OOM.\n", | |
1473 | cdev, idx, npods); | |
1474 | return -ENOMEM; | |
1475 | } | |
1476 | req = (struct ulp_mem_io *)skb->head; | |
1477 | set_queue(skb, CPL_PRIORITY_CONTROL, NULL); | |
1478 | ||
3bd3e8bf | 1479 | ulp_mem_io_set_hdr(lldi, req, wr_len, dlen, pm_addr); |
e27d6169 | 1480 | idata = (struct ulptx_idata *)(req + 1); |
1481 | ppod = (struct cxgbi_pagepod *)(idata + 1); | |
7b36b6e0 | 1482 | |
1483 | for (i = 0; i < npods; i++, ppod++, gl_pidx += PPOD_PAGES_MAX) { | |
1484 | if (!hdr && !gl) | |
1485 | cxgbi_ddp_ppod_clear(ppod); | |
1486 | else | |
1487 | cxgbi_ddp_ppod_set(ppod, hdr, gl, gl_pidx); | |
1488 | } | |
1489 | ||
1490 | cxgb4_ofld_send(cdev->ports[port_id], skb); | |
1491 | return 0; | |
1492 | } | |
1493 | ||
1494 | static int ddp_set_map(struct cxgbi_sock *csk, struct cxgbi_pagepod_hdr *hdr, | |
1495 | unsigned int idx, unsigned int npods, | |
1496 | struct cxgbi_gather_list *gl) | |
1497 | { | |
1498 | unsigned int i, cnt; | |
1499 | int err = 0; | |
1500 | ||
1501 | for (i = 0; i < npods; i += cnt, idx += cnt) { | |
1502 | cnt = npods - i; | |
e27d6169 | 1503 | if (cnt > ULPMEM_IDATA_MAX_NPPODS) |
1504 | cnt = ULPMEM_IDATA_MAX_NPPODS; | |
1505 | err = ddp_ppod_write_idata(csk->cdev, csk->port_id, hdr, | |
7b36b6e0 | 1506 | idx, cnt, gl, 4 * i); |
1507 | if (err < 0) | |
1508 | break; | |
1509 | } | |
1510 | return err; | |
1511 | } | |
1512 | ||
1513 | static void ddp_clear_map(struct cxgbi_hba *chba, unsigned int tag, | |
1514 | unsigned int idx, unsigned int npods) | |
1515 | { | |
1516 | unsigned int i, cnt; | |
1517 | int err; | |
1518 | ||
1519 | for (i = 0; i < npods; i += cnt, idx += cnt) { | |
1520 | cnt = npods - i; | |
e27d6169 | 1521 | if (cnt > ULPMEM_IDATA_MAX_NPPODS) |
1522 | cnt = ULPMEM_IDATA_MAX_NPPODS; | |
1523 | err = ddp_ppod_write_idata(chba->cdev, chba->port_id, NULL, | |
7b36b6e0 | 1524 | idx, cnt, NULL, 0); |
1525 | if (err < 0) | |
1526 | break; | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, | |
1531 | int pg_idx, bool reply) | |
1532 | { | |
1533 | struct sk_buff *skb; | |
1534 | struct cpl_set_tcb_field *req; | |
7b36b6e0 | 1535 | |
e27d6169 | 1536 | if (!pg_idx || pg_idx >= DDP_PGIDX_MAX) |
7b36b6e0 | 1537 | return 0; |
1538 | ||
24d3f95a | 1539 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
7b36b6e0 | 1540 | if (!skb) |
1541 | return -ENOMEM; | |
1542 | ||
e27d6169 | 1543 | /* set up ulp page size */ |
7b36b6e0 | 1544 | req = (struct cpl_set_tcb_field *)skb->head; |
1545 | INIT_TP_WR(req, csk->tid); | |
1546 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); | |
1547 | req->reply_ctrl = htons(NO_REPLY(reply) | QUEUENO(csk->rss_qid)); | |
e27d6169 | 1548 | req->word_cookie = htons(0); |
1549 | req->mask = cpu_to_be64(0x3 << 8); | |
1550 | req->val = cpu_to_be64(pg_idx << 8); | |
7b36b6e0 | 1551 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
1552 | ||
1553 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1554 | "csk 0x%p, tid 0x%x, pg_idx %u.\n", csk, csk->tid, pg_idx); | |
1555 | ||
1556 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, | |
1561 | int hcrc, int dcrc, int reply) | |
1562 | { | |
1563 | struct sk_buff *skb; | |
1564 | struct cpl_set_tcb_field *req; | |
7b36b6e0 | 1565 | |
e27d6169 | 1566 | if (!hcrc && !dcrc) |
1567 | return 0; | |
7b36b6e0 | 1568 | |
24d3f95a | 1569 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
7b36b6e0 | 1570 | if (!skb) |
1571 | return -ENOMEM; | |
1572 | ||
1573 | csk->hcrc_len = (hcrc ? 4 : 0); | |
1574 | csk->dcrc_len = (dcrc ? 4 : 0); | |
e27d6169 | 1575 | /* set up ulp submode */ |
7b36b6e0 | 1576 | req = (struct cpl_set_tcb_field *)skb->head; |
1577 | INIT_TP_WR(req, tid); | |
1578 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); | |
1579 | req->reply_ctrl = htons(NO_REPLY(reply) | QUEUENO(csk->rss_qid)); | |
e27d6169 | 1580 | req->word_cookie = htons(0); |
1581 | req->mask = cpu_to_be64(0x3 << 4); | |
1582 | req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) | | |
1583 | (dcrc ? ULP_CRC_DATA : 0)) << 4); | |
7b36b6e0 | 1584 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
1585 | ||
1586 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1587 | "csk 0x%p, tid 0x%x, crc %d,%d.\n", csk, csk->tid, hcrc, dcrc); | |
1588 | ||
1589 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | static int cxgb4i_ddp_init(struct cxgbi_device *cdev) | |
1594 | { | |
1595 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1596 | struct cxgbi_ddp_info *ddp = cdev->ddp; | |
1597 | unsigned int tagmask, pgsz_factor[4]; | |
1598 | int err; | |
1599 | ||
1600 | if (ddp) { | |
1601 | kref_get(&ddp->refcnt); | |
1602 | pr_warn("cdev 0x%p, ddp 0x%p already set up.\n", | |
1603 | cdev, cdev->ddp); | |
1604 | return -EALREADY; | |
1605 | } | |
1606 | ||
1607 | err = cxgbi_ddp_init(cdev, lldi->vr->iscsi.start, | |
1608 | lldi->vr->iscsi.start + lldi->vr->iscsi.size - 1, | |
1609 | lldi->iscsi_iolen, lldi->iscsi_iolen); | |
1610 | if (err < 0) | |
1611 | return err; | |
1612 | ||
1613 | ddp = cdev->ddp; | |
1614 | ||
1615 | tagmask = ddp->idx_mask << PPOD_IDX_SHIFT; | |
1616 | cxgbi_ddp_page_size_factor(pgsz_factor); | |
1617 | cxgb4_iscsi_init(lldi->ports[0], tagmask, pgsz_factor); | |
1618 | ||
7b36b6e0 | 1619 | cdev->csk_ddp_setup_digest = ddp_setup_conn_digest; |
1620 | cdev->csk_ddp_setup_pgidx = ddp_setup_conn_pgidx; | |
1621 | cdev->csk_ddp_set = ddp_set_map; | |
1622 | cdev->csk_ddp_clear = ddp_clear_map; | |
1623 | ||
1624 | pr_info("cxgb4i 0x%p tag: sw %u, rsvd %u,%u, mask 0x%x.\n", | |
1625 | cdev, cdev->tag_format.sw_bits, cdev->tag_format.rsvd_bits, | |
1626 | cdev->tag_format.rsvd_shift, cdev->tag_format.rsvd_mask); | |
1627 | pr_info("cxgb4i 0x%p, nppods %u, bits %u, mask 0x%x,0x%x pkt %u/%u, " | |
1628 | " %u/%u.\n", | |
1629 | cdev, ddp->nppods, ddp->idx_bits, ddp->idx_mask, | |
1630 | ddp->rsvd_tag_mask, ddp->max_txsz, lldi->iscsi_iolen, | |
1631 | ddp->max_rxsz, lldi->iscsi_iolen); | |
1632 | pr_info("cxgb4i 0x%p max payload size: %u/%u, %u/%u.\n", | |
1633 | cdev, cdev->tx_max_size, ddp->max_txsz, cdev->rx_max_size, | |
1634 | ddp->max_rxsz); | |
1635 | return 0; | |
1636 | } | |
1637 | ||
1638 | static void *t4_uld_add(const struct cxgb4_lld_info *lldi) | |
1639 | { | |
1640 | struct cxgbi_device *cdev; | |
1641 | struct port_info *pi; | |
1642 | int i, rc; | |
1643 | ||
1644 | cdev = cxgbi_device_register(sizeof(*lldi), lldi->nports); | |
1645 | if (!cdev) { | |
1646 | pr_info("t4 device 0x%p, register failed.\n", lldi); | |
1647 | return NULL; | |
1648 | } | |
1649 | pr_info("0x%p,0x%x, ports %u,%s, chan %u, q %u,%u, wr %u.\n", | |
1650 | cdev, lldi->adapter_type, lldi->nports, | |
1651 | lldi->ports[0]->name, lldi->nchan, lldi->ntxq, | |
1652 | lldi->nrxq, lldi->wr_cred); | |
1653 | for (i = 0; i < lldi->nrxq; i++) | |
1654 | log_debug(1 << CXGBI_DBG_DEV, | |
1655 | "t4 0x%p, rxq id #%d: %u.\n", | |
1656 | cdev, i, lldi->rxq_ids[i]); | |
1657 | ||
1658 | memcpy(cxgbi_cdev_priv(cdev), lldi, sizeof(*lldi)); | |
1659 | cdev->flags = CXGBI_FLAG_DEV_T4; | |
1660 | cdev->pdev = lldi->pdev; | |
1661 | cdev->ports = lldi->ports; | |
1662 | cdev->nports = lldi->nports; | |
1663 | cdev->mtus = lldi->mtus; | |
1664 | cdev->nmtus = NMTUS; | |
1665 | cdev->snd_win = cxgb4i_snd_win; | |
1666 | cdev->rcv_win = cxgb4i_rcv_win; | |
1667 | cdev->rx_credit_thres = cxgb4i_rx_credit_thres; | |
1668 | cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN; | |
1669 | cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr); | |
1670 | cdev->itp = &cxgb4i_iscsi_transport; | |
1671 | ||
e27d6169 | 1672 | cdev->pfvf = FW_VIID_PFN_GET(cxgb4_port_viid(lldi->ports[0])) << 8; |
1673 | pr_info("cdev 0x%p,%s, pfvf %u.\n", | |
1674 | cdev, lldi->ports[0]->name, cdev->pfvf); | |
1675 | ||
7b36b6e0 | 1676 | rc = cxgb4i_ddp_init(cdev); |
1677 | if (rc) { | |
1678 | pr_info("t4 0x%p ddp init failed.\n", cdev); | |
1679 | goto err_out; | |
1680 | } | |
1681 | rc = cxgb4i_ofld_init(cdev); | |
1682 | if (rc) { | |
1683 | pr_info("t4 0x%p ofld init failed.\n", cdev); | |
1684 | goto err_out; | |
1685 | } | |
1686 | ||
1687 | rc = cxgbi_hbas_add(cdev, CXGB4I_MAX_LUN, CXGBI_MAX_CONN, | |
1688 | &cxgb4i_host_template, cxgb4i_stt); | |
1689 | if (rc) | |
1690 | goto err_out; | |
1691 | ||
1692 | for (i = 0; i < cdev->nports; i++) { | |
1693 | pi = netdev_priv(lldi->ports[i]); | |
1694 | cdev->hbas[i]->port_id = pi->port_id; | |
1695 | } | |
1696 | return cdev; | |
1697 | ||
1698 | err_out: | |
1699 | cxgbi_device_unregister(cdev); | |
1700 | return ERR_PTR(-ENOMEM); | |
1701 | } | |
1702 | ||
1703 | #define RX_PULL_LEN 128 | |
1704 | static int t4_uld_rx_handler(void *handle, const __be64 *rsp, | |
1705 | const struct pkt_gl *pgl) | |
1706 | { | |
1707 | const struct cpl_act_establish *rpl; | |
1708 | struct sk_buff *skb; | |
1709 | unsigned int opc; | |
1710 | struct cxgbi_device *cdev = handle; | |
1711 | ||
1712 | if (pgl == NULL) { | |
1713 | unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; | |
1714 | ||
24d3f95a | 1715 | skb = alloc_wr(len, 0, GFP_ATOMIC); |
7b36b6e0 | 1716 | if (!skb) |
1717 | goto nomem; | |
1718 | skb_copy_to_linear_data(skb, &rsp[1], len); | |
1719 | } else { | |
1720 | if (unlikely(*(u8 *)rsp != *(u8 *)pgl->va)) { | |
1721 | pr_info("? FL 0x%p,RSS%#llx,FL %#llx,len %u.\n", | |
1722 | pgl->va, be64_to_cpu(*rsp), | |
1723 | be64_to_cpu(*(u64 *)pgl->va), | |
1724 | pgl->tot_len); | |
1725 | return 0; | |
1726 | } | |
1727 | skb = cxgb4_pktgl_to_skb(pgl, RX_PULL_LEN, RX_PULL_LEN); | |
1728 | if (unlikely(!skb)) | |
1729 | goto nomem; | |
1730 | } | |
1731 | ||
1732 | rpl = (struct cpl_act_establish *)skb->data; | |
1733 | opc = rpl->ot.opcode; | |
1734 | log_debug(1 << CXGBI_DBG_TOE, | |
1735 | "cdev %p, opcode 0x%x(0x%x,0x%x), skb %p.\n", | |
1736 | cdev, opc, rpl->ot.opcode_tid, ntohl(rpl->ot.opcode_tid), skb); | |
1737 | if (cxgb4i_cplhandlers[opc]) | |
1738 | cxgb4i_cplhandlers[opc](cdev, skb); | |
1739 | else { | |
1740 | pr_err("No handler for opcode 0x%x.\n", opc); | |
1741 | __kfree_skb(skb); | |
1742 | } | |
1743 | return 0; | |
1744 | nomem: | |
1745 | log_debug(1 << CXGBI_DBG_TOE, "OOM bailing out.\n"); | |
1746 | return 1; | |
1747 | } | |
1748 | ||
1749 | static int t4_uld_state_change(void *handle, enum cxgb4_state state) | |
1750 | { | |
1751 | struct cxgbi_device *cdev = handle; | |
1752 | ||
1753 | switch (state) { | |
1754 | case CXGB4_STATE_UP: | |
1755 | pr_info("cdev 0x%p, UP.\n", cdev); | |
7b36b6e0 | 1756 | break; |
1757 | case CXGB4_STATE_START_RECOVERY: | |
1758 | pr_info("cdev 0x%p, RECOVERY.\n", cdev); | |
1759 | /* close all connections */ | |
1760 | break; | |
1761 | case CXGB4_STATE_DOWN: | |
1762 | pr_info("cdev 0x%p, DOWN.\n", cdev); | |
1763 | break; | |
1764 | case CXGB4_STATE_DETACH: | |
1765 | pr_info("cdev 0x%p, DETACH.\n", cdev); | |
c3b331a3 | 1766 | cxgbi_device_unregister(cdev); |
7b36b6e0 | 1767 | break; |
1768 | default: | |
1769 | pr_info("cdev 0x%p, unknown state %d.\n", cdev, state); | |
1770 | break; | |
1771 | } | |
1772 | return 0; | |
1773 | } | |
1774 | ||
1775 | static int __init cxgb4i_init_module(void) | |
1776 | { | |
1777 | int rc; | |
1778 | ||
1779 | printk(KERN_INFO "%s", version); | |
1780 | ||
1781 | rc = cxgbi_iscsi_init(&cxgb4i_iscsi_transport, &cxgb4i_stt); | |
1782 | if (rc < 0) | |
1783 | return rc; | |
1784 | cxgb4_register_uld(CXGB4_ULD_ISCSI, &cxgb4i_uld_info); | |
759a0cc5 | 1785 | |
7b36b6e0 | 1786 | return 0; |
1787 | } | |
1788 | ||
1789 | static void __exit cxgb4i_exit_module(void) | |
1790 | { | |
1791 | cxgb4_unregister_uld(CXGB4_ULD_ISCSI); | |
1792 | cxgbi_device_unregister_all(CXGBI_FLAG_DEV_T4); | |
1793 | cxgbi_iscsi_cleanup(&cxgb4i_iscsi_transport, &cxgb4i_stt); | |
1794 | } | |
1795 | ||
1796 | module_init(cxgb4i_init_module); | |
1797 | module_exit(cxgb4i_exit_module); |