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7b36b6e0 | 1 | /* |
2 | * cxgb4i.c: Chelsio T4 iSCSI driver. | |
3 | * | |
1149a5ed | 4 | * Copyright (c) 2010-2015 Chelsio Communications, Inc. |
7b36b6e0 | 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 | ||
28466e0f | 16 | #include <linux/kernel.h> |
7b36b6e0 | 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> | |
759a0cc5 | 23 | #include <net/addrconf.h> |
7b36b6e0 | 24 | |
3bd3e8bf | 25 | #include "t4_regs.h" |
7b36b6e0 | 26 | #include "t4_msg.h" |
27 | #include "cxgb4.h" | |
28 | #include "cxgb4_uld.h" | |
29 | #include "t4fw_api.h" | |
30 | #include "l2t.h" | |
31 | #include "cxgb4i.h" | |
211a84e3 | 32 | #include "clip_tbl.h" |
7b36b6e0 | 33 | |
34 | static unsigned int dbg_level; | |
35 | ||
36 | #include "../libcxgbi.h" | |
37 | ||
38 | #define DRV_MODULE_NAME "cxgb4i" | |
3bd3e8bf | 39 | #define DRV_MODULE_DESC "Chelsio T4/T5 iSCSI Driver" |
0ea5bf3d KX |
40 | #define DRV_MODULE_VERSION "0.9.5-ko" |
41 | #define DRV_MODULE_RELDATE "Apr. 2015" | |
7b36b6e0 | 42 | |
43 | static char version[] = | |
44 | DRV_MODULE_DESC " " DRV_MODULE_NAME | |
0ea5bf3d | 45 | " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; |
7b36b6e0 | 46 | |
47 | MODULE_AUTHOR("Chelsio Communications, Inc."); | |
48 | MODULE_DESCRIPTION(DRV_MODULE_DESC); | |
49 | MODULE_VERSION(DRV_MODULE_VERSION); | |
50 | MODULE_LICENSE("GPL"); | |
51 | ||
52 | module_param(dbg_level, uint, 0644); | |
53 | MODULE_PARM_DESC(dbg_level, "Debug flag (default=0)"); | |
54 | ||
81daf10c KX |
55 | #define CXGB4I_DEFAULT_10G_RCV_WIN (256 * 1024) |
56 | static int cxgb4i_rcv_win = -1; | |
7b36b6e0 | 57 | module_param(cxgb4i_rcv_win, int, 0644); |
58 | MODULE_PARM_DESC(cxgb4i_rcv_win, "TCP reveive window in bytes"); | |
59 | ||
81daf10c KX |
60 | #define CXGB4I_DEFAULT_10G_SND_WIN (128 * 1024) |
61 | static int cxgb4i_snd_win = -1; | |
7b36b6e0 | 62 | module_param(cxgb4i_snd_win, int, 0644); |
63 | MODULE_PARM_DESC(cxgb4i_snd_win, "TCP send window in bytes"); | |
64 | ||
65 | static int cxgb4i_rx_credit_thres = 10 * 1024; | |
66 | module_param(cxgb4i_rx_credit_thres, int, 0644); | |
67 | MODULE_PARM_DESC(cxgb4i_rx_credit_thres, | |
68 | "RX credits return threshold in bytes (default=10KB)"); | |
69 | ||
70 | static unsigned int cxgb4i_max_connect = (8 * 1024); | |
71 | module_param(cxgb4i_max_connect, uint, 0644); | |
72 | MODULE_PARM_DESC(cxgb4i_max_connect, "Maximum number of connections"); | |
73 | ||
74 | static unsigned short cxgb4i_sport_base = 20000; | |
75 | module_param(cxgb4i_sport_base, ushort, 0644); | |
76 | MODULE_PARM_DESC(cxgb4i_sport_base, "Starting port number (default 20000)"); | |
77 | ||
78 | typedef void (*cxgb4i_cplhandler_func)(struct cxgbi_device *, struct sk_buff *); | |
79 | ||
80 | static void *t4_uld_add(const struct cxgb4_lld_info *); | |
81 | static int t4_uld_rx_handler(void *, const __be64 *, const struct pkt_gl *); | |
82 | static int t4_uld_state_change(void *, enum cxgb4_state state); | |
64bfead8 | 83 | static inline int send_tx_flowc_wr(struct cxgbi_sock *); |
7b36b6e0 | 84 | |
85 | static const struct cxgb4_uld_info cxgb4i_uld_info = { | |
86 | .name = DRV_MODULE_NAME, | |
87 | .add = t4_uld_add, | |
88 | .rx_handler = t4_uld_rx_handler, | |
89 | .state_change = t4_uld_state_change, | |
90 | }; | |
91 | ||
92 | static struct scsi_host_template cxgb4i_host_template = { | |
93 | .module = THIS_MODULE, | |
94 | .name = DRV_MODULE_NAME, | |
95 | .proc_name = DRV_MODULE_NAME, | |
96 | .can_queue = CXGB4I_SCSI_HOST_QDEPTH, | |
97 | .queuecommand = iscsi_queuecommand, | |
db5ed4df | 98 | .change_queue_depth = scsi_change_queue_depth, |
7b36b6e0 | 99 | .sg_tablesize = SG_ALL, |
100 | .max_sectors = 0xFFFF, | |
101 | .cmd_per_lun = ISCSI_DEF_CMD_PER_LUN, | |
102 | .eh_abort_handler = iscsi_eh_abort, | |
103 | .eh_device_reset_handler = iscsi_eh_device_reset, | |
104 | .eh_target_reset_handler = iscsi_eh_recover_target, | |
105 | .target_alloc = iscsi_target_alloc, | |
106 | .use_clustering = DISABLE_CLUSTERING, | |
107 | .this_id = -1, | |
c40ecc12 | 108 | .track_queue_depth = 1, |
7b36b6e0 | 109 | }; |
110 | ||
111 | static struct iscsi_transport cxgb4i_iscsi_transport = { | |
112 | .owner = THIS_MODULE, | |
113 | .name = DRV_MODULE_NAME, | |
114 | .caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST | | |
115 | CAP_DATADGST | CAP_DIGEST_OFFLOAD | | |
fdafd4df | 116 | CAP_PADDING_OFFLOAD | CAP_TEXT_NEGO, |
3128c6c7 | 117 | .attr_is_visible = cxgbi_attr_is_visible, |
7b36b6e0 | 118 | .get_host_param = cxgbi_get_host_param, |
119 | .set_host_param = cxgbi_set_host_param, | |
120 | /* session management */ | |
121 | .create_session = cxgbi_create_session, | |
122 | .destroy_session = cxgbi_destroy_session, | |
123 | .get_session_param = iscsi_session_get_param, | |
124 | /* connection management */ | |
125 | .create_conn = cxgbi_create_conn, | |
126 | .bind_conn = cxgbi_bind_conn, | |
127 | .destroy_conn = iscsi_tcp_conn_teardown, | |
128 | .start_conn = iscsi_conn_start, | |
129 | .stop_conn = iscsi_conn_stop, | |
c71b9b66 | 130 | .get_conn_param = iscsi_conn_get_param, |
7b36b6e0 | 131 | .set_param = cxgbi_set_conn_param, |
132 | .get_stats = cxgbi_get_conn_stats, | |
133 | /* pdu xmit req from user space */ | |
134 | .send_pdu = iscsi_conn_send_pdu, | |
135 | /* task */ | |
136 | .init_task = iscsi_tcp_task_init, | |
137 | .xmit_task = iscsi_tcp_task_xmit, | |
138 | .cleanup_task = cxgbi_cleanup_task, | |
139 | /* pdu */ | |
140 | .alloc_pdu = cxgbi_conn_alloc_pdu, | |
141 | .init_pdu = cxgbi_conn_init_pdu, | |
142 | .xmit_pdu = cxgbi_conn_xmit_pdu, | |
143 | .parse_pdu_itt = cxgbi_parse_pdu_itt, | |
144 | /* TCP connect/disconnect */ | |
c71b9b66 | 145 | .get_ep_param = cxgbi_get_ep_param, |
7b36b6e0 | 146 | .ep_connect = cxgbi_ep_connect, |
147 | .ep_poll = cxgbi_ep_poll, | |
148 | .ep_disconnect = cxgbi_ep_disconnect, | |
149 | /* Error recovery timeout call */ | |
150 | .session_recovery_timedout = iscsi_session_recovery_timedout, | |
151 | }; | |
152 | ||
153 | static struct scsi_transport_template *cxgb4i_stt; | |
154 | ||
155 | /* | |
156 | * CPL (Chelsio Protocol Language) defines a message passing interface between | |
157 | * the host driver and Chelsio asic. | |
158 | * The section below implments CPLs that related to iscsi tcp connection | |
159 | * open/close/abort and data send/receive. | |
160 | */ | |
759a0cc5 | 161 | |
7b36b6e0 | 162 | #define RCV_BUFSIZ_MASK 0x3FFU |
d3074cce | 163 | #define MAX_IMM_TX_PKT_LEN 256 |
7b36b6e0 | 164 | |
7b36b6e0 | 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 | */ | |
84944d8c | 174 | static inline bool is_ofld_imm(const struct sk_buff *skb) |
7b36b6e0 | 175 | { |
84944d8c KX |
176 | int len = skb->len; |
177 | ||
178 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) | |
179 | len += sizeof(struct fw_ofld_tx_data_wr); | |
180 | ||
181 | return len <= MAX_IMM_TX_PKT_LEN; | |
7b36b6e0 | 182 | } |
183 | ||
184 | static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb, | |
185 | struct l2t_entry *e) | |
186 | { | |
3bd3e8bf | 187 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
759a0cc5 | 188 | int t4 = is_t4(lldi->adapter_type); |
7b36b6e0 | 189 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); |
190 | unsigned long long opt0; | |
191 | unsigned int opt2; | |
192 | unsigned int qid_atid = ((unsigned int)csk->atid) | | |
193 | (((unsigned int)csk->rss_qid) << 14); | |
194 | ||
d7990b0c AB |
195 | opt0 = KEEP_ALIVE_F | |
196 | WND_SCALE_V(wscale) | | |
197 | MSS_IDX_V(csk->mss_idx) | | |
198 | L2T_IDX_V(((struct l2t_entry *)csk->l2t)->idx) | | |
199 | TX_CHAN_V(csk->tx_chan) | | |
200 | SMAC_SEL_V(csk->smac_idx) | | |
201 | ULP_MODE_V(ULP_MODE_ISCSI) | | |
81daf10c | 202 | RCV_BUFSIZ_V(csk->rcv_win >> 10); |
1eb88a5d | 203 | |
d7990b0c AB |
204 | opt2 = RX_CHANNEL_V(0) | |
205 | RSS_QUEUE_VALID_F | | |
d7990b0c | 206 | RSS_QUEUE_V(csk->rss_qid); |
7b36b6e0 | 207 | |
3bd3e8bf KX |
208 | if (is_t4(lldi->adapter_type)) { |
209 | struct cpl_act_open_req *req = | |
210 | (struct cpl_act_open_req *)skb->head; | |
211 | ||
3bd3e8bf KX |
212 | INIT_TP_WR(req, 0); |
213 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
7b36b6e0 | 214 | qid_atid)); |
3bd3e8bf KX |
215 | req->local_port = csk->saddr.sin_port; |
216 | req->peer_port = csk->daddr.sin_port; | |
217 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
218 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
219 | req->opt0 = cpu_to_be64(opt0); | |
ac0245ff KX |
220 | req->params = cpu_to_be32(cxgb4_select_ntuple( |
221 | csk->cdev->ports[csk->port_id], | |
222 | csk->l2t)); | |
d7990b0c | 223 | opt2 |= RX_FC_VALID_F; |
3bd3e8bf | 224 | req->opt2 = cpu_to_be32(opt2); |
7b36b6e0 | 225 | |
3bd3e8bf KX |
226 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
227 | "csk t4 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
228 | csk, &req->local_ip, ntohs(req->local_port), | |
229 | &req->peer_ip, ntohs(req->peer_port), | |
230 | csk->atid, csk->rss_qid); | |
231 | } else { | |
232 | struct cpl_t5_act_open_req *req = | |
233 | (struct cpl_t5_act_open_req *)skb->head; | |
1eb88a5d | 234 | u32 isn = (prandom_u32() & ~7UL) - 1; |
3bd3e8bf | 235 | |
3bd3e8bf KX |
236 | INIT_TP_WR(req, 0); |
237 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
238 | qid_atid)); | |
239 | req->local_port = csk->saddr.sin_port; | |
240 | req->peer_port = csk->daddr.sin_port; | |
241 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
242 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
243 | req->opt0 = cpu_to_be64(opt0); | |
d7990b0c | 244 | req->params = cpu_to_be64(FILTER_TUPLE_V( |
ac0245ff KX |
245 | cxgb4_select_ntuple( |
246 | csk->cdev->ports[csk->port_id], | |
247 | csk->l2t))); | |
1eb88a5d KX |
248 | req->rsvd = cpu_to_be32(isn); |
249 | opt2 |= T5_ISS_VALID; | |
250 | opt2 |= T5_OPT_2_VALID_F; | |
251 | ||
3bd3e8bf KX |
252 | req->opt2 = cpu_to_be32(opt2); |
253 | ||
254 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
255 | "csk t5 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
256 | csk, &req->local_ip, ntohs(req->local_port), | |
257 | &req->peer_ip, ntohs(req->peer_port), | |
258 | csk->atid, csk->rss_qid); | |
259 | } | |
260 | ||
261 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); | |
759a0cc5 AB |
262 | |
263 | pr_info_ipaddr("t%d csk 0x%p,%u,0x%lx,%u, rss_qid %u.\n", | |
264 | (&csk->saddr), (&csk->daddr), t4 ? 4 : 5, csk, | |
265 | csk->state, csk->flags, csk->atid, csk->rss_qid); | |
266 | ||
267 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
268 | } | |
269 | ||
f42bb57c | 270 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
271 | static void send_act_open_req6(struct cxgbi_sock *csk, struct sk_buff *skb, |
272 | struct l2t_entry *e) | |
273 | { | |
274 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); | |
275 | int t4 = is_t4(lldi->adapter_type); | |
276 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); | |
277 | unsigned long long opt0; | |
278 | unsigned int opt2; | |
279 | unsigned int qid_atid = ((unsigned int)csk->atid) | | |
280 | (((unsigned int)csk->rss_qid) << 14); | |
281 | ||
d7990b0c AB |
282 | opt0 = KEEP_ALIVE_F | |
283 | WND_SCALE_V(wscale) | | |
284 | MSS_IDX_V(csk->mss_idx) | | |
285 | L2T_IDX_V(((struct l2t_entry *)csk->l2t)->idx) | | |
286 | TX_CHAN_V(csk->tx_chan) | | |
287 | SMAC_SEL_V(csk->smac_idx) | | |
288 | ULP_MODE_V(ULP_MODE_ISCSI) | | |
81daf10c | 289 | RCV_BUFSIZ_V(csk->rcv_win >> 10); |
759a0cc5 | 290 | |
d7990b0c AB |
291 | opt2 = RX_CHANNEL_V(0) | |
292 | RSS_QUEUE_VALID_F | | |
293 | RX_FC_DISABLE_F | | |
294 | RSS_QUEUE_V(csk->rss_qid); | |
759a0cc5 AB |
295 | |
296 | if (t4) { | |
297 | struct cpl_act_open_req6 *req = | |
298 | (struct cpl_act_open_req6 *)skb->head; | |
299 | ||
300 | INIT_TP_WR(req, 0); | |
301 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
302 | qid_atid)); | |
303 | req->local_port = csk->saddr6.sin6_port; | |
304 | req->peer_port = csk->daddr6.sin6_port; | |
305 | ||
306 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
307 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
308 | 8); | |
309 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
310 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
311 | 8); | |
312 | ||
313 | req->opt0 = cpu_to_be64(opt0); | |
314 | ||
d7990b0c | 315 | opt2 |= RX_FC_VALID_F; |
759a0cc5 AB |
316 | req->opt2 = cpu_to_be32(opt2); |
317 | ||
318 | req->params = cpu_to_be32(cxgb4_select_ntuple( | |
319 | csk->cdev->ports[csk->port_id], | |
320 | csk->l2t)); | |
321 | } else { | |
322 | struct cpl_t5_act_open_req6 *req = | |
323 | (struct cpl_t5_act_open_req6 *)skb->head; | |
324 | ||
325 | INIT_TP_WR(req, 0); | |
326 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
327 | qid_atid)); | |
328 | req->local_port = csk->saddr6.sin6_port; | |
329 | req->peer_port = csk->daddr6.sin6_port; | |
330 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
331 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
332 | 8); | |
333 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
334 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
335 | 8); | |
336 | req->opt0 = cpu_to_be64(opt0); | |
337 | ||
d7990b0c | 338 | opt2 |= T5_OPT_2_VALID_F; |
759a0cc5 AB |
339 | req->opt2 = cpu_to_be32(opt2); |
340 | ||
d7990b0c | 341 | req->params = cpu_to_be64(FILTER_TUPLE_V(cxgb4_select_ntuple( |
759a0cc5 AB |
342 | csk->cdev->ports[csk->port_id], |
343 | csk->l2t))); | |
344 | } | |
345 | ||
346 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); | |
347 | ||
348 | pr_info("t%d csk 0x%p,%u,0x%lx,%u, [%pI6]:%u-[%pI6]:%u, rss_qid %u.\n", | |
349 | t4 ? 4 : 5, csk, csk->state, csk->flags, csk->atid, | |
350 | &csk->saddr6.sin6_addr, ntohs(csk->saddr.sin_port), | |
351 | &csk->daddr6.sin6_addr, ntohs(csk->daddr.sin_port), | |
352 | csk->rss_qid); | |
353 | ||
7b36b6e0 | 354 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); |
355 | } | |
f42bb57c | 356 | #endif |
7b36b6e0 | 357 | |
358 | static void send_close_req(struct cxgbi_sock *csk) | |
359 | { | |
360 | struct sk_buff *skb = csk->cpl_close; | |
361 | struct cpl_close_con_req *req = (struct cpl_close_con_req *)skb->head; | |
362 | unsigned int tid = csk->tid; | |
363 | ||
364 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
365 | "csk 0x%p,%u,0x%lx, tid %u.\n", | |
366 | csk, csk->state, csk->flags, csk->tid); | |
367 | csk->cpl_close = NULL; | |
368 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); | |
369 | INIT_TP_WR(req, tid); | |
370 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid)); | |
371 | req->rsvd = 0; | |
372 | ||
373 | cxgbi_sock_skb_entail(csk, skb); | |
374 | if (csk->state >= CTP_ESTABLISHED) | |
375 | push_tx_frames(csk, 1); | |
376 | } | |
377 | ||
378 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
379 | { | |
380 | struct cxgbi_sock *csk = (struct cxgbi_sock *)handle; | |
381 | struct cpl_abort_req *req; | |
382 | ||
383 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
384 | "csk 0x%p,%u,0x%lx, tid %u, abort.\n", | |
385 | csk, csk->state, csk->flags, csk->tid); | |
386 | req = (struct cpl_abort_req *)skb->data; | |
387 | req->cmd = CPL_ABORT_NO_RST; | |
388 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
389 | } | |
390 | ||
391 | static void send_abort_req(struct cxgbi_sock *csk) | |
392 | { | |
393 | struct cpl_abort_req *req; | |
394 | struct sk_buff *skb = csk->cpl_abort_req; | |
395 | ||
396 | if (unlikely(csk->state == CTP_ABORTING) || !skb || !csk->cdev) | |
397 | return; | |
64bfead8 KX |
398 | |
399 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
400 | send_tx_flowc_wr(csk); | |
401 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
402 | } | |
403 | ||
7b36b6e0 | 404 | cxgbi_sock_set_state(csk, CTP_ABORTING); |
405 | cxgbi_sock_set_flag(csk, CTPF_ABORT_RPL_PENDING); | |
406 | cxgbi_sock_purge_write_queue(csk); | |
407 | ||
408 | csk->cpl_abort_req = NULL; | |
409 | req = (struct cpl_abort_req *)skb->head; | |
2126bc5e | 410 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 411 | req->cmd = CPL_ABORT_SEND_RST; |
412 | t4_set_arp_err_handler(skb, csk, abort_arp_failure); | |
413 | INIT_TP_WR(req, csk->tid); | |
414 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, csk->tid)); | |
415 | req->rsvd0 = htonl(csk->snd_nxt); | |
416 | req->rsvd1 = !cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT); | |
417 | ||
418 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
419 | "csk 0x%p,%u,0x%lx,%u, snd_nxt %u, 0x%x.\n", | |
420 | csk, csk->state, csk->flags, csk->tid, csk->snd_nxt, | |
421 | req->rsvd1); | |
422 | ||
423 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
424 | } | |
425 | ||
426 | static void send_abort_rpl(struct cxgbi_sock *csk, int rst_status) | |
427 | { | |
428 | struct sk_buff *skb = csk->cpl_abort_rpl; | |
429 | struct cpl_abort_rpl *rpl = (struct cpl_abort_rpl *)skb->head; | |
430 | ||
431 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
432 | "csk 0x%p,%u,0x%lx,%u, status %d.\n", | |
433 | csk, csk->state, csk->flags, csk->tid, rst_status); | |
434 | ||
435 | csk->cpl_abort_rpl = NULL; | |
2126bc5e | 436 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 437 | INIT_TP_WR(rpl, csk->tid); |
438 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, csk->tid)); | |
439 | rpl->cmd = rst_status; | |
440 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
441 | } | |
442 | ||
443 | /* | |
444 | * CPL connection rx data ack: host -> | |
445 | * Send RX credits through an RX_DATA_ACK CPL message. Returns the number of | |
446 | * credits sent. | |
447 | */ | |
448 | static u32 send_rx_credits(struct cxgbi_sock *csk, u32 credits) | |
449 | { | |
450 | struct sk_buff *skb; | |
451 | struct cpl_rx_data_ack *req; | |
452 | ||
453 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
454 | "csk 0x%p,%u,0x%lx,%u, credit %u.\n", | |
455 | csk, csk->state, csk->flags, csk->tid, credits); | |
456 | ||
24d3f95a | 457 | skb = alloc_wr(sizeof(*req), 0, GFP_ATOMIC); |
7b36b6e0 | 458 | if (!skb) { |
459 | pr_info("csk 0x%p, credit %u, OOM.\n", csk, credits); | |
460 | return 0; | |
461 | } | |
462 | req = (struct cpl_rx_data_ack *)skb->head; | |
463 | ||
464 | set_wr_txq(skb, CPL_PRIORITY_ACK, csk->port_id); | |
465 | INIT_TP_WR(req, csk->tid); | |
466 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
467 | csk->tid)); | |
d7990b0c AB |
468 | req->credit_dack = cpu_to_be32(RX_CREDITS_V(credits) |
469 | | RX_FORCE_ACK_F); | |
7b36b6e0 | 470 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
471 | return credits; | |
472 | } | |
473 | ||
474 | /* | |
475 | * sgl_len - calculates the size of an SGL of the given capacity | |
476 | * @n: the number of SGL entries | |
477 | * Calculates the number of flits needed for a scatter/gather list that | |
478 | * can hold the given number of entries. | |
479 | */ | |
480 | static inline unsigned int sgl_len(unsigned int n) | |
481 | { | |
482 | n--; | |
483 | return (3 * n) / 2 + (n & 1) + 2; | |
484 | } | |
485 | ||
486 | /* | |
487 | * calc_tx_flits_ofld - calculate # of flits for an offload packet | |
488 | * @skb: the packet | |
489 | * | |
490 | * Returns the number of flits needed for the given offload packet. | |
491 | * These packets are already fully constructed and no additional headers | |
492 | * will be added. | |
493 | */ | |
494 | static inline unsigned int calc_tx_flits_ofld(const struct sk_buff *skb) | |
495 | { | |
496 | unsigned int flits, cnt; | |
497 | ||
498 | if (is_ofld_imm(skb)) | |
499 | return DIV_ROUND_UP(skb->len, 8); | |
500 | flits = skb_transport_offset(skb) / 8; | |
501 | cnt = skb_shinfo(skb)->nr_frags; | |
499e2e6f | 502 | if (skb_tail_pointer(skb) != skb_transport_header(skb)) |
7b36b6e0 | 503 | cnt++; |
504 | return flits + sgl_len(cnt); | |
505 | } | |
506 | ||
64bfead8 KX |
507 | #define FLOWC_WR_NPARAMS_MIN 9 |
508 | static inline int tx_flowc_wr_credits(int *nparamsp, int *flowclenp) | |
509 | { | |
510 | int nparams, flowclen16, flowclen; | |
511 | ||
512 | nparams = FLOWC_WR_NPARAMS_MIN; | |
513 | flowclen = offsetof(struct fw_flowc_wr, mnemval[nparams]); | |
514 | flowclen16 = DIV_ROUND_UP(flowclen, 16); | |
515 | flowclen = flowclen16 * 16; | |
516 | /* | |
517 | * Return the number of 16-byte credits used by the FlowC request. | |
518 | * Pass back the nparams and actual FlowC length if requested. | |
519 | */ | |
520 | if (nparamsp) | |
521 | *nparamsp = nparams; | |
522 | if (flowclenp) | |
523 | *flowclenp = flowclen; | |
524 | ||
525 | return flowclen16; | |
526 | } | |
527 | ||
528 | static inline int send_tx_flowc_wr(struct cxgbi_sock *csk) | |
7b36b6e0 | 529 | { |
530 | struct sk_buff *skb; | |
531 | struct fw_flowc_wr *flowc; | |
64bfead8 | 532 | int nparams, flowclen16, flowclen; |
7b36b6e0 | 533 | |
64bfead8 | 534 | flowclen16 = tx_flowc_wr_credits(&nparams, &flowclen); |
24d3f95a | 535 | skb = alloc_wr(flowclen, 0, GFP_ATOMIC); |
7b36b6e0 | 536 | flowc = (struct fw_flowc_wr *)skb->head; |
537 | flowc->op_to_nparams = | |
64bfead8 | 538 | htonl(FW_WR_OP_V(FW_FLOWC_WR) | FW_FLOWC_WR_NPARAMS_V(nparams)); |
7b36b6e0 | 539 | flowc->flowid_len16 = |
64bfead8 | 540 | htonl(FW_WR_LEN16_V(flowclen16) | FW_WR_FLOWID_V(csk->tid)); |
7b36b6e0 | 541 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; |
e27d6169 | 542 | flowc->mnemval[0].val = htonl(csk->cdev->pfvf); |
7b36b6e0 | 543 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
544 | flowc->mnemval[1].val = htonl(csk->tx_chan); | |
545 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
546 | flowc->mnemval[2].val = htonl(csk->tx_chan); | |
547 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
548 | flowc->mnemval[3].val = htonl(csk->rss_qid); | |
549 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
550 | flowc->mnemval[4].val = htonl(csk->snd_nxt); | |
551 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
552 | flowc->mnemval[5].val = htonl(csk->rcv_nxt); | |
553 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
81daf10c | 554 | flowc->mnemval[6].val = htonl(csk->snd_win); |
7b36b6e0 | 555 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; |
556 | flowc->mnemval[7].val = htonl(csk->advmss); | |
557 | flowc->mnemval[8].mnemonic = 0; | |
558 | flowc->mnemval[8].val = 0; | |
64bfead8 KX |
559 | flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_TXDATAPLEN_MAX; |
560 | flowc->mnemval[8].val = 16384; | |
561 | ||
2126bc5e | 562 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 563 | |
564 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
565 | "csk 0x%p, tid 0x%x, %u,%u,%u,%u,%u,%u,%u.\n", | |
566 | csk, csk->tid, 0, csk->tx_chan, csk->rss_qid, | |
81daf10c | 567 | csk->snd_nxt, csk->rcv_nxt, csk->snd_win, |
7b36b6e0 | 568 | csk->advmss); |
569 | ||
570 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
64bfead8 KX |
571 | |
572 | return flowclen16; | |
7b36b6e0 | 573 | } |
574 | ||
575 | static inline void make_tx_data_wr(struct cxgbi_sock *csk, struct sk_buff *skb, | |
576 | int dlen, int len, u32 credits, int compl) | |
577 | { | |
578 | struct fw_ofld_tx_data_wr *req; | |
579 | unsigned int submode = cxgbi_skcb_ulp_mode(skb) & 3; | |
e2ac9628 | 580 | unsigned int wr_ulp_mode = 0, val; |
7857c62a | 581 | bool imm = is_ofld_imm(skb); |
7b36b6e0 | 582 | |
583 | req = (struct fw_ofld_tx_data_wr *)__skb_push(skb, sizeof(*req)); | |
584 | ||
7857c62a | 585 | if (imm) { |
e2ac9628 HS |
586 | req->op_to_immdlen = htonl(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
587 | FW_WR_COMPL_F | | |
588 | FW_WR_IMMDLEN_V(dlen)); | |
589 | req->flowid_len16 = htonl(FW_WR_FLOWID_V(csk->tid) | | |
590 | FW_WR_LEN16_V(credits)); | |
7b36b6e0 | 591 | } else { |
592 | req->op_to_immdlen = | |
e2ac9628 HS |
593 | cpu_to_be32(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
594 | FW_WR_COMPL_F | | |
595 | FW_WR_IMMDLEN_V(0)); | |
7b36b6e0 | 596 | req->flowid_len16 = |
e2ac9628 HS |
597 | cpu_to_be32(FW_WR_FLOWID_V(csk->tid) | |
598 | FW_WR_LEN16_V(credits)); | |
7b36b6e0 | 599 | } |
600 | if (submode) | |
e2ac9628 HS |
601 | wr_ulp_mode = FW_OFLD_TX_DATA_WR_ULPMODE_V(ULP2_MODE_ISCSI) | |
602 | FW_OFLD_TX_DATA_WR_ULPSUBMODE_V(submode); | |
603 | val = skb_peek(&csk->write_queue) ? 0 : 1; | |
6aca4112 | 604 | req->tunnel_to_proxy = htonl(wr_ulp_mode | |
e2ac9628 | 605 | FW_OFLD_TX_DATA_WR_SHOVE_V(val)); |
7b36b6e0 | 606 | req->plen = htonl(len); |
607 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) | |
608 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
609 | } | |
610 | ||
611 | static void arp_failure_skb_discard(void *handle, struct sk_buff *skb) | |
612 | { | |
613 | kfree_skb(skb); | |
614 | } | |
615 | ||
616 | static int push_tx_frames(struct cxgbi_sock *csk, int req_completion) | |
617 | { | |
618 | int total_size = 0; | |
619 | struct sk_buff *skb; | |
620 | ||
621 | if (unlikely(csk->state < CTP_ESTABLISHED || | |
622 | csk->state == CTP_CLOSE_WAIT_1 || csk->state >= CTP_ABORTING)) { | |
623 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK | | |
624 | 1 << CXGBI_DBG_PDU_TX, | |
625 | "csk 0x%p,%u,0x%lx,%u, in closing state.\n", | |
626 | csk, csk->state, csk->flags, csk->tid); | |
627 | return 0; | |
628 | } | |
629 | ||
630 | while (csk->wr_cred && (skb = skb_peek(&csk->write_queue)) != NULL) { | |
631 | int dlen = skb->len; | |
632 | int len = skb->len; | |
633 | unsigned int credits_needed; | |
64bfead8 | 634 | int flowclen16 = 0; |
7b36b6e0 | 635 | |
636 | skb_reset_transport_header(skb); | |
637 | if (is_ofld_imm(skb)) | |
84944d8c | 638 | credits_needed = DIV_ROUND_UP(dlen, 16); |
7b36b6e0 | 639 | else |
84944d8c KX |
640 | credits_needed = DIV_ROUND_UP( |
641 | 8 * calc_tx_flits_ofld(skb), | |
642 | 16); | |
643 | ||
644 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) | |
645 | credits_needed += DIV_ROUND_UP( | |
646 | sizeof(struct fw_ofld_tx_data_wr), | |
7b36b6e0 | 647 | 16); |
648 | ||
64bfead8 KX |
649 | /* |
650 | * Assumes the initial credits is large enough to support | |
651 | * fw_flowc_wr plus largest possible first payload | |
652 | */ | |
653 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
654 | flowclen16 = send_tx_flowc_wr(csk); | |
655 | csk->wr_cred -= flowclen16; | |
656 | csk->wr_una_cred += flowclen16; | |
657 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
658 | } | |
659 | ||
7b36b6e0 | 660 | if (csk->wr_cred < credits_needed) { |
661 | log_debug(1 << CXGBI_DBG_PDU_TX, | |
662 | "csk 0x%p, skb %u/%u, wr %d < %u.\n", | |
663 | csk, skb->len, skb->data_len, | |
664 | credits_needed, csk->wr_cred); | |
665 | break; | |
666 | } | |
667 | __skb_unlink(skb, &csk->write_queue); | |
2126bc5e | 668 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
64bfead8 | 669 | skb->csum = credits_needed + flowclen16; |
7b36b6e0 | 670 | csk->wr_cred -= credits_needed; |
671 | csk->wr_una_cred += credits_needed; | |
672 | cxgbi_sock_enqueue_wr(csk, skb); | |
673 | ||
674 | log_debug(1 << CXGBI_DBG_PDU_TX, | |
675 | "csk 0x%p, skb %u/%u, wr %d, left %u, unack %u.\n", | |
676 | csk, skb->len, skb->data_len, credits_needed, | |
677 | csk->wr_cred, csk->wr_una_cred); | |
678 | ||
679 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) { | |
7b36b6e0 | 680 | len += cxgbi_ulp_extra_len(cxgbi_skcb_ulp_mode(skb)); |
681 | make_tx_data_wr(csk, skb, dlen, len, credits_needed, | |
682 | req_completion); | |
683 | csk->snd_nxt += len; | |
684 | cxgbi_skcb_clear_flag(skb, SKCBF_TX_NEED_HDR); | |
685 | } | |
686 | total_size += skb->truesize; | |
687 | t4_set_arp_err_handler(skb, csk, arp_failure_skb_discard); | |
688 | ||
689 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_TX, | |
690 | "csk 0x%p,%u,0x%lx,%u, skb 0x%p, %u.\n", | |
691 | csk, csk->state, csk->flags, csk->tid, skb, len); | |
692 | ||
693 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
694 | } | |
695 | return total_size; | |
696 | } | |
697 | ||
698 | static inline void free_atid(struct cxgbi_sock *csk) | |
699 | { | |
700 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); | |
701 | ||
702 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) { | |
703 | cxgb4_free_atid(lldi->tids, csk->atid); | |
704 | cxgbi_sock_clear_flag(csk, CTPF_HAS_ATID); | |
705 | cxgbi_sock_put(csk); | |
706 | } | |
707 | } | |
708 | ||
709 | static void do_act_establish(struct cxgbi_device *cdev, struct sk_buff *skb) | |
710 | { | |
711 | struct cxgbi_sock *csk; | |
712 | struct cpl_act_establish *req = (struct cpl_act_establish *)skb->data; | |
713 | unsigned short tcp_opt = ntohs(req->tcp_opt); | |
714 | unsigned int tid = GET_TID(req); | |
6c53e938 | 715 | unsigned int atid = TID_TID_G(ntohl(req->tos_atid)); |
7b36b6e0 | 716 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
717 | struct tid_info *t = lldi->tids; | |
718 | u32 rcv_isn = be32_to_cpu(req->rcv_isn); | |
719 | ||
720 | csk = lookup_atid(t, atid); | |
721 | if (unlikely(!csk)) { | |
722 | pr_err("NO conn. for atid %u, cdev 0x%p.\n", atid, cdev); | |
723 | goto rel_skb; | |
724 | } | |
725 | ||
e27d6169 | 726 | if (csk->atid != atid) { |
727 | pr_err("bad conn atid %u, csk 0x%p,%u,0x%lx,tid %u, atid %u.\n", | |
728 | atid, csk, csk->state, csk->flags, csk->tid, csk->atid); | |
729 | goto rel_skb; | |
730 | } | |
731 | ||
759a0cc5 AB |
732 | pr_info_ipaddr("atid 0x%x, tid 0x%x, csk 0x%p,%u,0x%lx, isn %u.\n", |
733 | (&csk->saddr), (&csk->daddr), | |
734 | atid, tid, csk, csk->state, csk->flags, rcv_isn); | |
735 | ||
736 | module_put(THIS_MODULE); | |
7b36b6e0 | 737 | |
738 | cxgbi_sock_get(csk); | |
739 | csk->tid = tid; | |
740 | cxgb4_insert_tid(lldi->tids, csk, tid); | |
741 | cxgbi_sock_set_flag(csk, CTPF_HAS_TID); | |
742 | ||
743 | free_atid(csk); | |
744 | ||
745 | spin_lock_bh(&csk->lock); | |
746 | if (unlikely(csk->state != CTP_ACTIVE_OPEN)) | |
747 | pr_info("csk 0x%p,%u,0x%lx,%u, got EST.\n", | |
748 | csk, csk->state, csk->flags, csk->tid); | |
749 | ||
750 | if (csk->retry_timer.function) { | |
751 | del_timer(&csk->retry_timer); | |
752 | csk->retry_timer.function = NULL; | |
753 | } | |
754 | ||
755 | csk->copied_seq = csk->rcv_wup = csk->rcv_nxt = rcv_isn; | |
756 | /* | |
757 | * Causes the first RX_DATA_ACK to supply any Rx credits we couldn't | |
758 | * pass through opt0. | |
759 | */ | |
81daf10c KX |
760 | if (csk->rcv_win > (RCV_BUFSIZ_MASK << 10)) |
761 | csk->rcv_wup -= csk->rcv_win - (RCV_BUFSIZ_MASK << 10); | |
7b36b6e0 | 762 | |
6c53e938 HS |
763 | csk->advmss = lldi->mtus[TCPOPT_MSS_G(tcp_opt)] - 40; |
764 | if (TCPOPT_TSTAMP_G(tcp_opt)) | |
7b36b6e0 | 765 | csk->advmss -= 12; |
766 | if (csk->advmss < 128) | |
767 | csk->advmss = 128; | |
768 | ||
769 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
770 | "csk 0x%p, mss_idx %u, advmss %u.\n", | |
6c53e938 | 771 | csk, TCPOPT_MSS_G(tcp_opt), csk->advmss); |
7b36b6e0 | 772 | |
773 | cxgbi_sock_established(csk, ntohl(req->snd_isn), ntohs(req->tcp_opt)); | |
774 | ||
775 | if (unlikely(cxgbi_sock_flag(csk, CTPF_ACTIVE_CLOSE_NEEDED))) | |
776 | send_abort_req(csk); | |
777 | else { | |
778 | if (skb_queue_len(&csk->write_queue)) | |
779 | push_tx_frames(csk, 0); | |
780 | cxgbi_conn_tx_open(csk); | |
781 | } | |
782 | spin_unlock_bh(&csk->lock); | |
783 | ||
784 | rel_skb: | |
785 | __kfree_skb(skb); | |
786 | } | |
787 | ||
788 | static int act_open_rpl_status_to_errno(int status) | |
789 | { | |
790 | switch (status) { | |
791 | case CPL_ERR_CONN_RESET: | |
792 | return -ECONNREFUSED; | |
793 | case CPL_ERR_ARP_MISS: | |
794 | return -EHOSTUNREACH; | |
795 | case CPL_ERR_CONN_TIMEDOUT: | |
796 | return -ETIMEDOUT; | |
797 | case CPL_ERR_TCAM_FULL: | |
798 | return -ENOMEM; | |
799 | case CPL_ERR_CONN_EXIST: | |
800 | return -EADDRINUSE; | |
801 | default: | |
802 | return -EIO; | |
803 | } | |
804 | } | |
805 | ||
806 | static void csk_act_open_retry_timer(unsigned long data) | |
807 | { | |
001586a7 | 808 | struct sk_buff *skb = NULL; |
7b36b6e0 | 809 | struct cxgbi_sock *csk = (struct cxgbi_sock *)data; |
3bd3e8bf | 810 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
759a0cc5 AB |
811 | void (*send_act_open_func)(struct cxgbi_sock *, struct sk_buff *, |
812 | struct l2t_entry *); | |
813 | int t4 = is_t4(lldi->adapter_type), size, size6; | |
7b36b6e0 | 814 | |
815 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
816 | "csk 0x%p,%u,0x%lx,%u.\n", | |
817 | csk, csk->state, csk->flags, csk->tid); | |
818 | ||
819 | cxgbi_sock_get(csk); | |
820 | spin_lock_bh(&csk->lock); | |
759a0cc5 AB |
821 | |
822 | if (t4) { | |
823 | size = sizeof(struct cpl_act_open_req); | |
824 | size6 = sizeof(struct cpl_act_open_req6); | |
825 | } else { | |
826 | size = sizeof(struct cpl_t5_act_open_req); | |
827 | size6 = sizeof(struct cpl_t5_act_open_req6); | |
828 | } | |
829 | ||
830 | if (csk->csk_family == AF_INET) { | |
831 | send_act_open_func = send_act_open_req; | |
832 | skb = alloc_wr(size, 0, GFP_ATOMIC); | |
f42bb57c | 833 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
834 | } else { |
835 | send_act_open_func = send_act_open_req6; | |
836 | skb = alloc_wr(size6, 0, GFP_ATOMIC); | |
f42bb57c | 837 | #endif |
759a0cc5 AB |
838 | } |
839 | ||
7b36b6e0 | 840 | if (!skb) |
841 | cxgbi_sock_fail_act_open(csk, -ENOMEM); | |
842 | else { | |
843 | skb->sk = (struct sock *)csk; | |
844 | t4_set_arp_err_handler(skb, csk, | |
759a0cc5 AB |
845 | cxgbi_sock_act_open_req_arp_failure); |
846 | send_act_open_func(csk, skb, csk->l2t); | |
7b36b6e0 | 847 | } |
759a0cc5 | 848 | |
7b36b6e0 | 849 | spin_unlock_bh(&csk->lock); |
850 | cxgbi_sock_put(csk); | |
759a0cc5 | 851 | |
7b36b6e0 | 852 | } |
853 | ||
928567ad KX |
854 | static inline bool is_neg_adv(unsigned int status) |
855 | { | |
856 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
857 | status == CPL_ERR_KEEPALV_NEG_ADVICE || | |
858 | status == CPL_ERR_PERSIST_NEG_ADVICE; | |
859 | } | |
860 | ||
7b36b6e0 | 861 | static void do_act_open_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) |
862 | { | |
863 | struct cxgbi_sock *csk; | |
864 | struct cpl_act_open_rpl *rpl = (struct cpl_act_open_rpl *)skb->data; | |
865 | unsigned int tid = GET_TID(rpl); | |
866 | unsigned int atid = | |
6c53e938 HS |
867 | TID_TID_G(AOPEN_ATID_G(be32_to_cpu(rpl->atid_status))); |
868 | unsigned int status = AOPEN_STATUS_G(be32_to_cpu(rpl->atid_status)); | |
7b36b6e0 | 869 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
870 | struct tid_info *t = lldi->tids; | |
871 | ||
872 | csk = lookup_atid(t, atid); | |
873 | if (unlikely(!csk)) { | |
874 | pr_err("NO matching conn. atid %u, tid %u.\n", atid, tid); | |
875 | goto rel_skb; | |
876 | } | |
877 | ||
759a0cc5 AB |
878 | pr_info_ipaddr("tid %u/%u, status %u.\n" |
879 | "csk 0x%p,%u,0x%lx. ", (&csk->saddr), (&csk->daddr), | |
880 | atid, tid, status, csk, csk->state, csk->flags); | |
7b36b6e0 | 881 | |
928567ad | 882 | if (is_neg_adv(status)) |
150cca7c KX |
883 | goto rel_skb; |
884 | ||
ee7255ad AB |
885 | module_put(THIS_MODULE); |
886 | ||
7b36b6e0 | 887 | if (status && status != CPL_ERR_TCAM_FULL && |
888 | status != CPL_ERR_CONN_EXIST && | |
889 | status != CPL_ERR_ARP_MISS) | |
890 | cxgb4_remove_tid(lldi->tids, csk->port_id, GET_TID(rpl)); | |
891 | ||
892 | cxgbi_sock_get(csk); | |
893 | spin_lock_bh(&csk->lock); | |
894 | ||
895 | if (status == CPL_ERR_CONN_EXIST && | |
896 | csk->retry_timer.function != csk_act_open_retry_timer) { | |
897 | csk->retry_timer.function = csk_act_open_retry_timer; | |
898 | mod_timer(&csk->retry_timer, jiffies + HZ / 2); | |
899 | } else | |
900 | cxgbi_sock_fail_act_open(csk, | |
901 | act_open_rpl_status_to_errno(status)); | |
902 | ||
903 | spin_unlock_bh(&csk->lock); | |
904 | cxgbi_sock_put(csk); | |
905 | rel_skb: | |
906 | __kfree_skb(skb); | |
907 | } | |
908 | ||
909 | static void do_peer_close(struct cxgbi_device *cdev, struct sk_buff *skb) | |
910 | { | |
911 | struct cxgbi_sock *csk; | |
912 | struct cpl_peer_close *req = (struct cpl_peer_close *)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 | ||
917 | csk = lookup_tid(t, tid); | |
918 | if (unlikely(!csk)) { | |
919 | pr_err("can't find connection for tid %u.\n", tid); | |
920 | goto rel_skb; | |
921 | } | |
759a0cc5 AB |
922 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", |
923 | (&csk->saddr), (&csk->daddr), | |
924 | csk, csk->state, csk->flags, csk->tid); | |
7b36b6e0 | 925 | cxgbi_sock_rcv_peer_close(csk); |
926 | rel_skb: | |
927 | __kfree_skb(skb); | |
928 | } | |
929 | ||
930 | static void do_close_con_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
931 | { | |
932 | struct cxgbi_sock *csk; | |
933 | struct cpl_close_con_rpl *rpl = (struct cpl_close_con_rpl *)skb->data; | |
934 | unsigned int tid = GET_TID(rpl); | |
935 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
936 | struct tid_info *t = lldi->tids; | |
937 | ||
938 | csk = lookup_tid(t, tid); | |
939 | if (unlikely(!csk)) { | |
940 | pr_err("can't find connection for tid %u.\n", tid); | |
941 | goto rel_skb; | |
942 | } | |
759a0cc5 AB |
943 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", |
944 | (&csk->saddr), (&csk->daddr), | |
945 | csk, csk->state, csk->flags, csk->tid); | |
7b36b6e0 | 946 | cxgbi_sock_rcv_close_conn_rpl(csk, ntohl(rpl->snd_nxt)); |
947 | rel_skb: | |
948 | __kfree_skb(skb); | |
949 | } | |
950 | ||
951 | static int abort_status_to_errno(struct cxgbi_sock *csk, int abort_reason, | |
952 | int *need_rst) | |
953 | { | |
954 | switch (abort_reason) { | |
955 | case CPL_ERR_BAD_SYN: /* fall through */ | |
956 | case CPL_ERR_CONN_RESET: | |
957 | return csk->state > CTP_ESTABLISHED ? | |
958 | -EPIPE : -ECONNRESET; | |
959 | case CPL_ERR_XMIT_TIMEDOUT: | |
960 | case CPL_ERR_PERSIST_TIMEDOUT: | |
961 | case CPL_ERR_FINWAIT2_TIMEDOUT: | |
962 | case CPL_ERR_KEEPALIVE_TIMEDOUT: | |
963 | return -ETIMEDOUT; | |
964 | default: | |
965 | return -EIO; | |
966 | } | |
967 | } | |
968 | ||
969 | static void do_abort_req_rss(struct cxgbi_device *cdev, struct sk_buff *skb) | |
970 | { | |
971 | struct cxgbi_sock *csk; | |
972 | struct cpl_abort_req_rss *req = (struct cpl_abort_req_rss *)skb->data; | |
973 | unsigned int tid = GET_TID(req); | |
974 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
975 | struct tid_info *t = lldi->tids; | |
976 | int rst_status = CPL_ABORT_NO_RST; | |
977 | ||
978 | csk = lookup_tid(t, tid); | |
979 | if (unlikely(!csk)) { | |
980 | pr_err("can't find connection for tid %u.\n", tid); | |
981 | goto rel_skb; | |
982 | } | |
983 | ||
759a0cc5 AB |
984 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", |
985 | (&csk->saddr), (&csk->daddr), | |
986 | csk, csk->state, csk->flags, csk->tid, req->status); | |
7b36b6e0 | 987 | |
928567ad | 988 | if (is_neg_adv(req->status)) |
7b36b6e0 | 989 | goto rel_skb; |
990 | ||
991 | cxgbi_sock_get(csk); | |
992 | spin_lock_bh(&csk->lock); | |
993 | ||
7b07bf24 AB |
994 | cxgbi_sock_clear_flag(csk, CTPF_ABORT_REQ_RCVD); |
995 | ||
996 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
997 | send_tx_flowc_wr(csk); | |
998 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
7b36b6e0 | 999 | } |
1000 | ||
7b07bf24 AB |
1001 | cxgbi_sock_set_flag(csk, CTPF_ABORT_REQ_RCVD); |
1002 | cxgbi_sock_set_state(csk, CTP_ABORTING); | |
1003 | ||
7b36b6e0 | 1004 | send_abort_rpl(csk, rst_status); |
1005 | ||
1006 | if (!cxgbi_sock_flag(csk, CTPF_ABORT_RPL_PENDING)) { | |
1007 | csk->err = abort_status_to_errno(csk, req->status, &rst_status); | |
1008 | cxgbi_sock_closed(csk); | |
1009 | } | |
7b07bf24 | 1010 | |
7b36b6e0 | 1011 | spin_unlock_bh(&csk->lock); |
1012 | cxgbi_sock_put(csk); | |
1013 | rel_skb: | |
1014 | __kfree_skb(skb); | |
1015 | } | |
1016 | ||
1017 | static void do_abort_rpl_rss(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1018 | { | |
1019 | struct cxgbi_sock *csk; | |
1020 | struct cpl_abort_rpl_rss *rpl = (struct cpl_abort_rpl_rss *)skb->data; | |
1021 | unsigned int tid = GET_TID(rpl); | |
1022 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1023 | struct tid_info *t = lldi->tids; | |
1024 | ||
1025 | csk = lookup_tid(t, tid); | |
1026 | if (!csk) | |
1027 | goto rel_skb; | |
1028 | ||
759a0cc5 AB |
1029 | if (csk) |
1030 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", | |
1031 | (&csk->saddr), (&csk->daddr), csk, | |
1032 | csk->state, csk->flags, csk->tid, rpl->status); | |
7b36b6e0 | 1033 | |
1034 | if (rpl->status == CPL_ERR_ABORT_FAILED) | |
1035 | goto rel_skb; | |
1036 | ||
1037 | cxgbi_sock_rcv_abort_rpl(csk); | |
1038 | rel_skb: | |
1039 | __kfree_skb(skb); | |
1040 | } | |
1041 | ||
f7bcd2e1 KX |
1042 | static void do_rx_data(struct cxgbi_device *cdev, struct sk_buff *skb) |
1043 | { | |
1044 | struct cxgbi_sock *csk; | |
1045 | struct cpl_rx_data *cpl = (struct cpl_rx_data *)skb->data; | |
1046 | unsigned int tid = GET_TID(cpl); | |
1047 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1048 | struct tid_info *t = lldi->tids; | |
1049 | ||
1050 | csk = lookup_tid(t, tid); | |
1051 | if (!csk) { | |
1052 | pr_err("can't find connection for tid %u.\n", tid); | |
1053 | } else { | |
1054 | /* not expecting this, reset the connection. */ | |
1055 | pr_err("csk 0x%p, tid %u, rcv cpl_rx_data.\n", csk, tid); | |
1056 | spin_lock_bh(&csk->lock); | |
1057 | send_abort_req(csk); | |
1058 | spin_unlock_bh(&csk->lock); | |
1059 | } | |
1060 | __kfree_skb(skb); | |
1061 | } | |
1062 | ||
7b36b6e0 | 1063 | static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb) |
1064 | { | |
1065 | struct cxgbi_sock *csk; | |
1066 | struct cpl_iscsi_hdr *cpl = (struct cpl_iscsi_hdr *)skb->data; | |
1067 | unsigned short pdu_len_ddp = be16_to_cpu(cpl->pdu_len_ddp); | |
1068 | unsigned int tid = GET_TID(cpl); | |
1069 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1070 | struct tid_info *t = lldi->tids; | |
7b36b6e0 | 1071 | |
1072 | csk = lookup_tid(t, tid); | |
1073 | if (unlikely(!csk)) { | |
1074 | pr_err("can't find conn. for tid %u.\n", tid); | |
1075 | goto rel_skb; | |
1076 | } | |
1077 | ||
1078 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1079 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p,%u, 0x%x.\n", | |
1080 | csk, csk->state, csk->flags, csk->tid, skb, skb->len, | |
1081 | pdu_len_ddp); | |
1082 | ||
1083 | spin_lock_bh(&csk->lock); | |
1084 | ||
1085 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1086 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1087 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1088 | csk, csk->state, csk->flags, csk->tid); | |
1089 | if (csk->state != CTP_ABORTING) | |
1090 | goto abort_conn; | |
1091 | else | |
1092 | goto discard; | |
1093 | } | |
1094 | ||
1095 | cxgbi_skcb_tcp_seq(skb) = ntohl(cpl->seq); | |
e27d6169 | 1096 | cxgbi_skcb_flags(skb) = 0; |
1097 | ||
7b36b6e0 | 1098 | skb_reset_transport_header(skb); |
1099 | __skb_pull(skb, sizeof(*cpl)); | |
1100 | __pskb_trim(skb, ntohs(cpl->len)); | |
1101 | ||
1102 | if (!csk->skb_ulp_lhdr) { | |
1103 | unsigned char *bhs; | |
3bd3e8bf | 1104 | unsigned int hlen, dlen, plen; |
7b36b6e0 | 1105 | |
1106 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1107 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p header.\n", | |
1108 | csk, csk->state, csk->flags, csk->tid, skb); | |
1109 | csk->skb_ulp_lhdr = skb; | |
e27d6169 | 1110 | cxgbi_skcb_set_flag(skb, SKCBF_RX_HDR); |
7b36b6e0 | 1111 | |
e27d6169 | 1112 | if (cxgbi_skcb_tcp_seq(skb) != csk->rcv_nxt) { |
7b36b6e0 | 1113 | pr_info("tid %u, CPL_ISCSI_HDR, bad seq, 0x%x/0x%x.\n", |
e27d6169 | 1114 | csk->tid, cxgbi_skcb_tcp_seq(skb), |
7b36b6e0 | 1115 | csk->rcv_nxt); |
1116 | goto abort_conn; | |
1117 | } | |
1118 | ||
e27d6169 | 1119 | bhs = skb->data; |
7b36b6e0 | 1120 | hlen = ntohs(cpl->len); |
1121 | dlen = ntohl(*(unsigned int *)(bhs + 4)) & 0xFFFFFF; | |
1122 | ||
bdc590b9 | 1123 | plen = ISCSI_PDU_LEN_G(pdu_len_ddp); |
3bd3e8bf KX |
1124 | if (is_t4(lldi->adapter_type)) |
1125 | plen -= 40; | |
1126 | ||
1127 | if ((hlen + dlen) != plen) { | |
7b36b6e0 | 1128 | pr_info("tid 0x%x, CPL_ISCSI_HDR, pdu len " |
1129 | "mismatch %u != %u + %u, seq 0x%x.\n", | |
3bd3e8bf KX |
1130 | csk->tid, plen, hlen, dlen, |
1131 | cxgbi_skcb_tcp_seq(skb)); | |
7b36b6e0 | 1132 | goto abort_conn; |
1133 | } | |
1134 | ||
1135 | cxgbi_skcb_rx_pdulen(skb) = (hlen + dlen + 3) & (~0x3); | |
1136 | if (dlen) | |
1137 | cxgbi_skcb_rx_pdulen(skb) += csk->dcrc_len; | |
1138 | csk->rcv_nxt += cxgbi_skcb_rx_pdulen(skb); | |
1139 | ||
1140 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1141 | "csk 0x%p, skb 0x%p, 0x%x,%u+%u,0x%x,0x%x.\n", | |
1142 | csk, skb, *bhs, hlen, dlen, | |
1143 | ntohl(*((unsigned int *)(bhs + 16))), | |
1144 | ntohl(*((unsigned int *)(bhs + 24)))); | |
1145 | ||
1146 | } else { | |
e27d6169 | 1147 | struct sk_buff *lskb = csk->skb_ulp_lhdr; |
7b36b6e0 | 1148 | |
e27d6169 | 1149 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA); |
7b36b6e0 | 1150 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
1151 | "csk 0x%p,%u,0x%lx, skb 0x%p data, 0x%p.\n", | |
1152 | csk, csk->state, csk->flags, skb, lskb); | |
1153 | } | |
1154 | ||
1155 | __skb_queue_tail(&csk->receive_queue, skb); | |
1156 | spin_unlock_bh(&csk->lock); | |
1157 | return; | |
1158 | ||
1159 | abort_conn: | |
1160 | send_abort_req(csk); | |
1161 | discard: | |
1162 | spin_unlock_bh(&csk->lock); | |
1163 | rel_skb: | |
1164 | __kfree_skb(skb); | |
1165 | } | |
1166 | ||
1167 | static void do_rx_data_ddp(struct cxgbi_device *cdev, | |
1168 | struct sk_buff *skb) | |
1169 | { | |
1170 | struct cxgbi_sock *csk; | |
1171 | struct sk_buff *lskb; | |
1172 | struct cpl_rx_data_ddp *rpl = (struct cpl_rx_data_ddp *)skb->data; | |
1173 | unsigned int tid = GET_TID(rpl); | |
1174 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1175 | struct tid_info *t = lldi->tids; | |
1176 | unsigned int status = ntohl(rpl->ddpvld); | |
1177 | ||
1178 | csk = lookup_tid(t, tid); | |
1179 | if (unlikely(!csk)) { | |
1180 | pr_err("can't find connection for tid %u.\n", tid); | |
1181 | goto rel_skb; | |
1182 | } | |
1183 | ||
1184 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1185 | "csk 0x%p,%u,0x%lx, skb 0x%p,0x%x, lhdr 0x%p.\n", | |
1186 | csk, csk->state, csk->flags, skb, status, csk->skb_ulp_lhdr); | |
1187 | ||
1188 | spin_lock_bh(&csk->lock); | |
1189 | ||
1190 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1191 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1192 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1193 | csk, csk->state, csk->flags, csk->tid); | |
1194 | if (csk->state != CTP_ABORTING) | |
1195 | goto abort_conn; | |
1196 | else | |
1197 | goto discard; | |
1198 | } | |
1199 | ||
1200 | if (!csk->skb_ulp_lhdr) { | |
1201 | pr_err("tid 0x%x, rcv RX_DATA_DDP w/o pdu bhs.\n", csk->tid); | |
1202 | goto abort_conn; | |
1203 | } | |
1204 | ||
1205 | lskb = csk->skb_ulp_lhdr; | |
1206 | csk->skb_ulp_lhdr = NULL; | |
1207 | ||
7b36b6e0 | 1208 | cxgbi_skcb_rx_ddigest(lskb) = ntohl(rpl->ulp_crc); |
1209 | ||
1210 | if (ntohs(rpl->len) != cxgbi_skcb_rx_pdulen(lskb)) | |
1211 | pr_info("tid 0x%x, RX_DATA_DDP pdulen %u != %u.\n", | |
1212 | csk->tid, ntohs(rpl->len), cxgbi_skcb_rx_pdulen(lskb)); | |
1213 | ||
1214 | if (status & (1 << CPL_RX_DDP_STATUS_HCRC_SHIFT)) { | |
e27d6169 | 1215 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, hcrc bad 0x%lx.\n", |
1216 | csk, lskb, status, cxgbi_skcb_flags(lskb)); | |
7b36b6e0 | 1217 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_HCRC_ERR); |
1218 | } | |
1219 | if (status & (1 << CPL_RX_DDP_STATUS_DCRC_SHIFT)) { | |
e27d6169 | 1220 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, dcrc bad 0x%lx.\n", |
1221 | csk, lskb, status, cxgbi_skcb_flags(lskb)); | |
7b36b6e0 | 1222 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DCRC_ERR); |
1223 | } | |
1224 | if (status & (1 << CPL_RX_DDP_STATUS_PAD_SHIFT)) { | |
1225 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1226 | "csk 0x%p, lhdr 0x%p, status 0x%x, pad bad.\n", | |
1227 | csk, lskb, status); | |
1228 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_PAD_ERR); | |
1229 | } | |
1230 | if ((status & (1 << CPL_RX_DDP_STATUS_DDP_SHIFT)) && | |
1231 | !cxgbi_skcb_test_flag(lskb, SKCBF_RX_DATA)) { | |
1232 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1233 | "csk 0x%p, lhdr 0x%p, 0x%x, data ddp'ed.\n", | |
1234 | csk, lskb, status); | |
1235 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA_DDPD); | |
1236 | } | |
1237 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1238 | "csk 0x%p, lskb 0x%p, f 0x%lx.\n", | |
1239 | csk, lskb, cxgbi_skcb_flags(lskb)); | |
1240 | ||
e27d6169 | 1241 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_STATUS); |
7b36b6e0 | 1242 | cxgbi_conn_pdu_ready(csk); |
1243 | spin_unlock_bh(&csk->lock); | |
1244 | goto rel_skb; | |
1245 | ||
1246 | abort_conn: | |
1247 | send_abort_req(csk); | |
1248 | discard: | |
1249 | spin_unlock_bh(&csk->lock); | |
1250 | rel_skb: | |
1251 | __kfree_skb(skb); | |
1252 | } | |
1253 | ||
1254 | static void do_fw4_ack(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1255 | { | |
1256 | struct cxgbi_sock *csk; | |
1257 | struct cpl_fw4_ack *rpl = (struct cpl_fw4_ack *)skb->data; | |
1258 | unsigned int tid = GET_TID(rpl); | |
1259 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1260 | struct tid_info *t = lldi->tids; | |
1261 | ||
1262 | csk = lookup_tid(t, tid); | |
1263 | if (unlikely(!csk)) | |
1264 | pr_err("can't find connection for tid %u.\n", tid); | |
1265 | else { | |
1266 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1267 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1268 | csk, csk->state, csk->flags, csk->tid); | |
1269 | cxgbi_sock_rcv_wr_ack(csk, rpl->credits, ntohl(rpl->snd_una), | |
1270 | rpl->seq_vld); | |
1271 | } | |
1272 | __kfree_skb(skb); | |
1273 | } | |
1274 | ||
1275 | static void do_set_tcb_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1276 | { | |
1277 | struct cpl_set_tcb_rpl *rpl = (struct cpl_set_tcb_rpl *)skb->data; | |
1278 | unsigned int tid = GET_TID(rpl); | |
1279 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1280 | struct tid_info *t = lldi->tids; | |
1281 | struct cxgbi_sock *csk; | |
1282 | ||
1283 | csk = lookup_tid(t, tid); | |
1284 | if (!csk) | |
1285 | pr_err("can't find conn. for tid %u.\n", tid); | |
1286 | ||
1287 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1288 | "csk 0x%p,%u,%lx,%u, status 0x%x.\n", | |
1289 | csk, csk->state, csk->flags, csk->tid, rpl->status); | |
1290 | ||
1291 | if (rpl->status != CPL_ERR_NONE) | |
1292 | pr_err("csk 0x%p,%u, SET_TCB_RPL status %u.\n", | |
1293 | csk, tid, rpl->status); | |
1294 | ||
1295 | __kfree_skb(skb); | |
1296 | } | |
1297 | ||
1298 | static int alloc_cpls(struct cxgbi_sock *csk) | |
1299 | { | |
24d3f95a | 1300 | csk->cpl_close = alloc_wr(sizeof(struct cpl_close_con_req), |
1301 | 0, GFP_KERNEL); | |
7b36b6e0 | 1302 | if (!csk->cpl_close) |
1303 | return -ENOMEM; | |
1304 | ||
24d3f95a | 1305 | csk->cpl_abort_req = alloc_wr(sizeof(struct cpl_abort_req), |
1306 | 0, GFP_KERNEL); | |
7b36b6e0 | 1307 | if (!csk->cpl_abort_req) |
1308 | goto free_cpls; | |
1309 | ||
24d3f95a | 1310 | csk->cpl_abort_rpl = alloc_wr(sizeof(struct cpl_abort_rpl), |
1311 | 0, GFP_KERNEL); | |
7b36b6e0 | 1312 | if (!csk->cpl_abort_rpl) |
1313 | goto free_cpls; | |
1314 | return 0; | |
1315 | ||
1316 | free_cpls: | |
1317 | cxgbi_sock_free_cpl_skbs(csk); | |
1318 | return -ENOMEM; | |
1319 | } | |
1320 | ||
1321 | static inline void l2t_put(struct cxgbi_sock *csk) | |
1322 | { | |
1323 | if (csk->l2t) { | |
1324 | cxgb4_l2t_release(csk->l2t); | |
1325 | csk->l2t = NULL; | |
1326 | cxgbi_sock_put(csk); | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | static void release_offload_resources(struct cxgbi_sock *csk) | |
1331 | { | |
1332 | struct cxgb4_lld_info *lldi; | |
211a84e3 AB |
1333 | #if IS_ENABLED(CONFIG_IPV6) |
1334 | struct net_device *ndev = csk->cdev->ports[csk->port_id]; | |
1335 | #endif | |
7b36b6e0 | 1336 | |
1337 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1338 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1339 | csk, csk->state, csk->flags, csk->tid); | |
1340 | ||
1341 | cxgbi_sock_free_cpl_skbs(csk); | |
1342 | if (csk->wr_cred != csk->wr_max_cred) { | |
1343 | cxgbi_sock_purge_wr_queue(csk); | |
1344 | cxgbi_sock_reset_wr_list(csk); | |
1345 | } | |
1346 | ||
1347 | l2t_put(csk); | |
211a84e3 AB |
1348 | #if IS_ENABLED(CONFIG_IPV6) |
1349 | if (csk->csk_family == AF_INET6) | |
1350 | cxgb4_clip_release(ndev, | |
1351 | (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1352 | #endif | |
1353 | ||
7b36b6e0 | 1354 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) |
1355 | free_atid(csk); | |
1356 | else if (cxgbi_sock_flag(csk, CTPF_HAS_TID)) { | |
1357 | lldi = cxgbi_cdev_priv(csk->cdev); | |
1358 | cxgb4_remove_tid(lldi->tids, 0, csk->tid); | |
1359 | cxgbi_sock_clear_flag(csk, CTPF_HAS_TID); | |
1360 | cxgbi_sock_put(csk); | |
1361 | } | |
1362 | csk->dst = NULL; | |
1363 | csk->cdev = NULL; | |
1364 | } | |
1365 | ||
1366 | static int init_act_open(struct cxgbi_sock *csk) | |
1367 | { | |
1368 | struct cxgbi_device *cdev = csk->cdev; | |
1369 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1370 | struct net_device *ndev = cdev->ports[csk->port_id]; | |
7b36b6e0 | 1371 | struct sk_buff *skb = NULL; |
759a0cc5 AB |
1372 | struct neighbour *n = NULL; |
1373 | void *daddr; | |
7b36b6e0 | 1374 | unsigned int step; |
759a0cc5 AB |
1375 | unsigned int size, size6; |
1376 | int t4 = is_t4(lldi->adapter_type); | |
81daf10c KX |
1377 | unsigned int linkspeed; |
1378 | unsigned int rcv_winf, snd_winf; | |
7b36b6e0 | 1379 | |
1380 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1381 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1382 | csk, csk->state, csk->flags, csk->tid); | |
1383 | ||
759a0cc5 AB |
1384 | if (csk->csk_family == AF_INET) |
1385 | daddr = &csk->daddr.sin_addr.s_addr; | |
e81fbf6c AB |
1386 | #if IS_ENABLED(CONFIG_IPV6) |
1387 | else if (csk->csk_family == AF_INET6) | |
759a0cc5 | 1388 | daddr = &csk->daddr6.sin6_addr; |
e81fbf6c AB |
1389 | #endif |
1390 | else { | |
1391 | pr_err("address family 0x%x not supported\n", csk->csk_family); | |
1392 | goto rel_resource; | |
1393 | } | |
759a0cc5 AB |
1394 | |
1395 | n = dst_neigh_lookup(csk->dst, daddr); | |
1396 | ||
1397 | if (!n) { | |
1398 | pr_err("%s, can't get neighbour of csk->dst.\n", ndev->name); | |
1399 | goto rel_resource; | |
1400 | } | |
1401 | ||
7b36b6e0 | 1402 | csk->atid = cxgb4_alloc_atid(lldi->tids, csk); |
1403 | if (csk->atid < 0) { | |
1404 | pr_err("%s, NO atid available.\n", ndev->name); | |
1405 | return -EINVAL; | |
1406 | } | |
1407 | cxgbi_sock_set_flag(csk, CTPF_HAS_ATID); | |
1408 | cxgbi_sock_get(csk); | |
1409 | ||
51e059bd | 1410 | csk->l2t = cxgb4_l2t_get(lldi->l2t, n, ndev, 0); |
7b36b6e0 | 1411 | if (!csk->l2t) { |
1412 | pr_err("%s, cannot alloc l2t.\n", ndev->name); | |
211a84e3 | 1413 | goto rel_resource_without_clip; |
7b36b6e0 | 1414 | } |
1415 | cxgbi_sock_get(csk); | |
1416 | ||
211a84e3 AB |
1417 | #if IS_ENABLED(CONFIG_IPV6) |
1418 | if (csk->csk_family == AF_INET6) | |
1419 | cxgb4_clip_get(ndev, (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1420 | #endif | |
1421 | ||
759a0cc5 AB |
1422 | if (t4) { |
1423 | size = sizeof(struct cpl_act_open_req); | |
1424 | size6 = sizeof(struct cpl_act_open_req6); | |
1425 | } else { | |
1426 | size = sizeof(struct cpl_t5_act_open_req); | |
1427 | size6 = sizeof(struct cpl_t5_act_open_req6); | |
1428 | } | |
1429 | ||
1430 | if (csk->csk_family == AF_INET) | |
1431 | skb = alloc_wr(size, 0, GFP_NOIO); | |
f42bb57c | 1432 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
1433 | else |
1434 | skb = alloc_wr(size6, 0, GFP_NOIO); | |
f42bb57c | 1435 | #endif |
759a0cc5 | 1436 | |
7b36b6e0 | 1437 | if (!skb) |
1438 | goto rel_resource; | |
1439 | skb->sk = (struct sock *)csk; | |
1440 | t4_set_arp_err_handler(skb, csk, cxgbi_sock_act_open_req_arp_failure); | |
1441 | ||
1442 | if (!csk->mtu) | |
1443 | csk->mtu = dst_mtu(csk->dst); | |
1444 | cxgb4_best_mtu(lldi->mtus, csk->mtu, &csk->mss_idx); | |
1445 | csk->tx_chan = cxgb4_port_chan(ndev); | |
1446 | /* SMT two entries per row */ | |
1447 | csk->smac_idx = ((cxgb4_port_viid(ndev) & 0x7F)) << 1; | |
1448 | step = lldi->ntxq / lldi->nchan; | |
1449 | csk->txq_idx = cxgb4_port_idx(ndev) * step; | |
1450 | step = lldi->nrxq / lldi->nchan; | |
1451 | csk->rss_qid = lldi->rxq_ids[cxgb4_port_idx(ndev) * step]; | |
81daf10c KX |
1452 | linkspeed = ((struct port_info *)netdev_priv(ndev))->link_cfg.speed; |
1453 | csk->snd_win = cxgb4i_snd_win; | |
1454 | csk->rcv_win = cxgb4i_rcv_win; | |
1455 | if (cxgb4i_rcv_win <= 0) { | |
1456 | csk->rcv_win = CXGB4I_DEFAULT_10G_RCV_WIN; | |
1457 | rcv_winf = linkspeed / SPEED_10000; | |
1458 | if (rcv_winf) | |
1459 | csk->rcv_win *= rcv_winf; | |
1460 | } | |
1461 | if (cxgb4i_snd_win <= 0) { | |
1462 | csk->snd_win = CXGB4I_DEFAULT_10G_SND_WIN; | |
1463 | snd_winf = linkspeed / SPEED_10000; | |
1464 | if (snd_winf) | |
1465 | csk->snd_win *= snd_winf; | |
1466 | } | |
759a0cc5 AB |
1467 | csk->wr_cred = lldi->wr_cred - |
1468 | DIV_ROUND_UP(sizeof(struct cpl_abort_req), 16); | |
1469 | csk->wr_max_cred = csk->wr_cred; | |
7b36b6e0 | 1470 | csk->wr_una_cred = 0; |
1471 | cxgbi_sock_reset_wr_list(csk); | |
1472 | csk->err = 0; | |
7b36b6e0 | 1473 | |
759a0cc5 AB |
1474 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u,%u,%u, mtu %u,%u, smac %u.\n", |
1475 | (&csk->saddr), (&csk->daddr), csk, csk->state, | |
1476 | csk->flags, csk->tx_chan, csk->txq_idx, csk->rss_qid, | |
1477 | csk->mtu, csk->mss_idx, csk->smac_idx); | |
1478 | ||
1479 | /* must wait for either a act_open_rpl or act_open_establish */ | |
1480 | try_module_get(THIS_MODULE); | |
7b36b6e0 | 1481 | cxgbi_sock_set_state(csk, CTP_ACTIVE_OPEN); |
759a0cc5 AB |
1482 | if (csk->csk_family == AF_INET) |
1483 | send_act_open_req(csk, skb, csk->l2t); | |
f42bb57c | 1484 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
1485 | else |
1486 | send_act_open_req6(csk, skb, csk->l2t); | |
f42bb57c | 1487 | #endif |
c4737377 | 1488 | neigh_release(n); |
759a0cc5 | 1489 | |
7b36b6e0 | 1490 | return 0; |
1491 | ||
1492 | rel_resource: | |
211a84e3 AB |
1493 | #if IS_ENABLED(CONFIG_IPV6) |
1494 | if (csk->csk_family == AF_INET6) | |
1495 | cxgb4_clip_release(ndev, | |
1496 | (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1497 | #endif | |
1498 | rel_resource_without_clip: | |
c4737377 DM |
1499 | if (n) |
1500 | neigh_release(n); | |
7b36b6e0 | 1501 | if (skb) |
1502 | __kfree_skb(skb); | |
1503 | return -EINVAL; | |
1504 | } | |
1505 | ||
1506 | cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = { | |
1507 | [CPL_ACT_ESTABLISH] = do_act_establish, | |
1508 | [CPL_ACT_OPEN_RPL] = do_act_open_rpl, | |
1509 | [CPL_PEER_CLOSE] = do_peer_close, | |
1510 | [CPL_ABORT_REQ_RSS] = do_abort_req_rss, | |
1511 | [CPL_ABORT_RPL_RSS] = do_abort_rpl_rss, | |
1512 | [CPL_CLOSE_CON_RPL] = do_close_con_rpl, | |
1513 | [CPL_FW4_ACK] = do_fw4_ack, | |
1514 | [CPL_ISCSI_HDR] = do_rx_iscsi_hdr, | |
3bd3e8bf | 1515 | [CPL_ISCSI_DATA] = do_rx_iscsi_hdr, |
7b36b6e0 | 1516 | [CPL_SET_TCB_RPL] = do_set_tcb_rpl, |
1517 | [CPL_RX_DATA_DDP] = do_rx_data_ddp, | |
3bd3e8bf | 1518 | [CPL_RX_ISCSI_DDP] = do_rx_data_ddp, |
f7bcd2e1 | 1519 | [CPL_RX_DATA] = do_rx_data, |
7b36b6e0 | 1520 | }; |
1521 | ||
1522 | int cxgb4i_ofld_init(struct cxgbi_device *cdev) | |
1523 | { | |
1524 | int rc; | |
1525 | ||
1526 | if (cxgb4i_max_connect > CXGB4I_MAX_CONN) | |
1527 | cxgb4i_max_connect = CXGB4I_MAX_CONN; | |
1528 | ||
1529 | rc = cxgbi_device_portmap_create(cdev, cxgb4i_sport_base, | |
1530 | cxgb4i_max_connect); | |
1531 | if (rc < 0) | |
1532 | return rc; | |
1533 | ||
1534 | cdev->csk_release_offload_resources = release_offload_resources; | |
1535 | cdev->csk_push_tx_frames = push_tx_frames; | |
1536 | cdev->csk_send_abort_req = send_abort_req; | |
1537 | cdev->csk_send_close_req = send_close_req; | |
1538 | cdev->csk_send_rx_credits = send_rx_credits; | |
1539 | cdev->csk_alloc_cpls = alloc_cpls; | |
1540 | cdev->csk_init_act_open = init_act_open; | |
1541 | ||
1542 | pr_info("cdev 0x%p, offload up, added.\n", cdev); | |
1543 | return 0; | |
1544 | } | |
1545 | ||
1546 | /* | |
1547 | * functions to program the pagepod in h/w | |
1548 | */ | |
e27d6169 | 1549 | #define ULPMEM_IDATA_MAX_NPPODS 4 /* 256/PPOD_SIZE */ |
3bd3e8bf KX |
1550 | static inline void ulp_mem_io_set_hdr(struct cxgb4_lld_info *lldi, |
1551 | struct ulp_mem_io *req, | |
e27d6169 | 1552 | unsigned int wr_len, unsigned int dlen, |
1553 | unsigned int pm_addr) | |
7b36b6e0 | 1554 | { |
e27d6169 | 1555 | struct ulptx_idata *idata = (struct ulptx_idata *)(req + 1); |
7b36b6e0 | 1556 | |
1557 | INIT_ULPTX_WR(req, wr_len, 0, 0); | |
3bd3e8bf | 1558 | if (is_t4(lldi->adapter_type)) |
d7990b0c AB |
1559 | req->cmd = htonl(ULPTX_CMD_V(ULP_TX_MEM_WRITE) | |
1560 | (ULP_MEMIO_ORDER_F)); | |
3bd3e8bf | 1561 | else |
d7990b0c AB |
1562 | req->cmd = htonl(ULPTX_CMD_V(ULP_TX_MEM_WRITE) | |
1563 | (T5_ULP_MEMIO_IMM_F)); | |
1564 | req->dlen = htonl(ULP_MEMIO_DATA_LEN_V(dlen >> 5)); | |
1565 | req->lock_addr = htonl(ULP_MEMIO_ADDR_V(pm_addr >> 5)); | |
7b36b6e0 | 1566 | req->len16 = htonl(DIV_ROUND_UP(wr_len - sizeof(req->wr), 16)); |
e27d6169 | 1567 | |
d7990b0c | 1568 | idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM)); |
e27d6169 | 1569 | idata->len = htonl(dlen); |
7b36b6e0 | 1570 | } |
1571 | ||
e27d6169 | 1572 | static int ddp_ppod_write_idata(struct cxgbi_device *cdev, unsigned int port_id, |
7b36b6e0 | 1573 | struct cxgbi_pagepod_hdr *hdr, unsigned int idx, |
1574 | unsigned int npods, | |
1575 | struct cxgbi_gather_list *gl, | |
1576 | unsigned int gl_pidx) | |
1577 | { | |
1578 | struct cxgbi_ddp_info *ddp = cdev->ddp; | |
3bd3e8bf | 1579 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
7b36b6e0 | 1580 | struct sk_buff *skb; |
1581 | struct ulp_mem_io *req; | |
e27d6169 | 1582 | struct ulptx_idata *idata; |
7b36b6e0 | 1583 | struct cxgbi_pagepod *ppod; |
e27d6169 | 1584 | unsigned int pm_addr = idx * PPOD_SIZE + ddp->llimit; |
1585 | unsigned int dlen = PPOD_SIZE * npods; | |
1586 | unsigned int wr_len = roundup(sizeof(struct ulp_mem_io) + | |
1587 | sizeof(struct ulptx_idata) + dlen, 16); | |
7b36b6e0 | 1588 | unsigned int i; |
1589 | ||
e27d6169 | 1590 | skb = alloc_wr(wr_len, 0, GFP_ATOMIC); |
7b36b6e0 | 1591 | if (!skb) { |
1592 | pr_err("cdev 0x%p, idx %u, npods %u, OOM.\n", | |
1593 | cdev, idx, npods); | |
1594 | return -ENOMEM; | |
1595 | } | |
1596 | req = (struct ulp_mem_io *)skb->head; | |
2126bc5e | 1597 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0); |
7b36b6e0 | 1598 | |
3bd3e8bf | 1599 | ulp_mem_io_set_hdr(lldi, req, wr_len, dlen, pm_addr); |
e27d6169 | 1600 | idata = (struct ulptx_idata *)(req + 1); |
1601 | ppod = (struct cxgbi_pagepod *)(idata + 1); | |
7b36b6e0 | 1602 | |
1603 | for (i = 0; i < npods; i++, ppod++, gl_pidx += PPOD_PAGES_MAX) { | |
1604 | if (!hdr && !gl) | |
1605 | cxgbi_ddp_ppod_clear(ppod); | |
1606 | else | |
1607 | cxgbi_ddp_ppod_set(ppod, hdr, gl, gl_pidx); | |
1608 | } | |
1609 | ||
1610 | cxgb4_ofld_send(cdev->ports[port_id], skb); | |
1611 | return 0; | |
1612 | } | |
1613 | ||
1614 | static int ddp_set_map(struct cxgbi_sock *csk, struct cxgbi_pagepod_hdr *hdr, | |
1615 | unsigned int idx, unsigned int npods, | |
1616 | struct cxgbi_gather_list *gl) | |
1617 | { | |
1618 | unsigned int i, cnt; | |
1619 | int err = 0; | |
1620 | ||
1621 | for (i = 0; i < npods; i += cnt, idx += cnt) { | |
1622 | cnt = npods - i; | |
e27d6169 | 1623 | if (cnt > ULPMEM_IDATA_MAX_NPPODS) |
1624 | cnt = ULPMEM_IDATA_MAX_NPPODS; | |
1625 | err = ddp_ppod_write_idata(csk->cdev, csk->port_id, hdr, | |
7b36b6e0 | 1626 | idx, cnt, gl, 4 * i); |
1627 | if (err < 0) | |
1628 | break; | |
1629 | } | |
1630 | return err; | |
1631 | } | |
1632 | ||
1633 | static void ddp_clear_map(struct cxgbi_hba *chba, unsigned int tag, | |
1634 | unsigned int idx, unsigned int npods) | |
1635 | { | |
1636 | unsigned int i, cnt; | |
1637 | int err; | |
1638 | ||
1639 | for (i = 0; i < npods; i += cnt, idx += cnt) { | |
1640 | cnt = npods - i; | |
e27d6169 | 1641 | if (cnt > ULPMEM_IDATA_MAX_NPPODS) |
1642 | cnt = ULPMEM_IDATA_MAX_NPPODS; | |
1643 | err = ddp_ppod_write_idata(chba->cdev, chba->port_id, NULL, | |
7b36b6e0 | 1644 | idx, cnt, NULL, 0); |
1645 | if (err < 0) | |
1646 | break; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, | |
1651 | int pg_idx, bool reply) | |
1652 | { | |
1653 | struct sk_buff *skb; | |
1654 | struct cpl_set_tcb_field *req; | |
7b36b6e0 | 1655 | |
e27d6169 | 1656 | if (!pg_idx || pg_idx >= DDP_PGIDX_MAX) |
7b36b6e0 | 1657 | return 0; |
1658 | ||
24d3f95a | 1659 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
7b36b6e0 | 1660 | if (!skb) |
1661 | return -ENOMEM; | |
1662 | ||
e27d6169 | 1663 | /* set up ulp page size */ |
7b36b6e0 | 1664 | req = (struct cpl_set_tcb_field *)skb->head; |
1665 | INIT_TP_WR(req, csk->tid); | |
1666 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); | |
bdc590b9 | 1667 | req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); |
e27d6169 | 1668 | req->word_cookie = htons(0); |
1669 | req->mask = cpu_to_be64(0x3 << 8); | |
1670 | req->val = cpu_to_be64(pg_idx << 8); | |
7b36b6e0 | 1671 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
1672 | ||
1673 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1674 | "csk 0x%p, tid 0x%x, pg_idx %u.\n", csk, csk->tid, pg_idx); | |
1675 | ||
1676 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
1677 | return 0; | |
1678 | } | |
1679 | ||
1680 | static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, | |
1681 | int hcrc, int dcrc, int reply) | |
1682 | { | |
1683 | struct sk_buff *skb; | |
1684 | struct cpl_set_tcb_field *req; | |
7b36b6e0 | 1685 | |
e27d6169 | 1686 | if (!hcrc && !dcrc) |
1687 | return 0; | |
7b36b6e0 | 1688 | |
24d3f95a | 1689 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
7b36b6e0 | 1690 | if (!skb) |
1691 | return -ENOMEM; | |
1692 | ||
1693 | csk->hcrc_len = (hcrc ? 4 : 0); | |
1694 | csk->dcrc_len = (dcrc ? 4 : 0); | |
e27d6169 | 1695 | /* set up ulp submode */ |
7b36b6e0 | 1696 | req = (struct cpl_set_tcb_field *)skb->head; |
1697 | INIT_TP_WR(req, tid); | |
1698 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); | |
bdc590b9 | 1699 | req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); |
e27d6169 | 1700 | req->word_cookie = htons(0); |
1701 | req->mask = cpu_to_be64(0x3 << 4); | |
1702 | req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) | | |
1703 | (dcrc ? ULP_CRC_DATA : 0)) << 4); | |
7b36b6e0 | 1704 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
1705 | ||
1706 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1707 | "csk 0x%p, tid 0x%x, crc %d,%d.\n", csk, csk->tid, hcrc, dcrc); | |
1708 | ||
1709 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | static int cxgb4i_ddp_init(struct cxgbi_device *cdev) | |
1714 | { | |
1715 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1716 | struct cxgbi_ddp_info *ddp = cdev->ddp; | |
1717 | unsigned int tagmask, pgsz_factor[4]; | |
1718 | int err; | |
1719 | ||
1720 | if (ddp) { | |
1721 | kref_get(&ddp->refcnt); | |
1722 | pr_warn("cdev 0x%p, ddp 0x%p already set up.\n", | |
1723 | cdev, cdev->ddp); | |
1724 | return -EALREADY; | |
1725 | } | |
1726 | ||
1727 | err = cxgbi_ddp_init(cdev, lldi->vr->iscsi.start, | |
1728 | lldi->vr->iscsi.start + lldi->vr->iscsi.size - 1, | |
1729 | lldi->iscsi_iolen, lldi->iscsi_iolen); | |
1730 | if (err < 0) | |
1731 | return err; | |
1732 | ||
1733 | ddp = cdev->ddp; | |
1734 | ||
1735 | tagmask = ddp->idx_mask << PPOD_IDX_SHIFT; | |
1736 | cxgbi_ddp_page_size_factor(pgsz_factor); | |
1737 | cxgb4_iscsi_init(lldi->ports[0], tagmask, pgsz_factor); | |
1738 | ||
7b36b6e0 | 1739 | cdev->csk_ddp_setup_digest = ddp_setup_conn_digest; |
1740 | cdev->csk_ddp_setup_pgidx = ddp_setup_conn_pgidx; | |
1741 | cdev->csk_ddp_set = ddp_set_map; | |
1742 | cdev->csk_ddp_clear = ddp_clear_map; | |
1743 | ||
1744 | pr_info("cxgb4i 0x%p tag: sw %u, rsvd %u,%u, mask 0x%x.\n", | |
1745 | cdev, cdev->tag_format.sw_bits, cdev->tag_format.rsvd_bits, | |
1746 | cdev->tag_format.rsvd_shift, cdev->tag_format.rsvd_mask); | |
1747 | pr_info("cxgb4i 0x%p, nppods %u, bits %u, mask 0x%x,0x%x pkt %u/%u, " | |
1748 | " %u/%u.\n", | |
1749 | cdev, ddp->nppods, ddp->idx_bits, ddp->idx_mask, | |
1750 | ddp->rsvd_tag_mask, ddp->max_txsz, lldi->iscsi_iolen, | |
1751 | ddp->max_rxsz, lldi->iscsi_iolen); | |
1752 | pr_info("cxgb4i 0x%p max payload size: %u/%u, %u/%u.\n", | |
1753 | cdev, cdev->tx_max_size, ddp->max_txsz, cdev->rx_max_size, | |
1754 | ddp->max_rxsz); | |
1755 | return 0; | |
1756 | } | |
1757 | ||
1758 | static void *t4_uld_add(const struct cxgb4_lld_info *lldi) | |
1759 | { | |
1760 | struct cxgbi_device *cdev; | |
1761 | struct port_info *pi; | |
1762 | int i, rc; | |
1763 | ||
1764 | cdev = cxgbi_device_register(sizeof(*lldi), lldi->nports); | |
1765 | if (!cdev) { | |
1766 | pr_info("t4 device 0x%p, register failed.\n", lldi); | |
1767 | return NULL; | |
1768 | } | |
1769 | pr_info("0x%p,0x%x, ports %u,%s, chan %u, q %u,%u, wr %u.\n", | |
1770 | cdev, lldi->adapter_type, lldi->nports, | |
1771 | lldi->ports[0]->name, lldi->nchan, lldi->ntxq, | |
1772 | lldi->nrxq, lldi->wr_cred); | |
1773 | for (i = 0; i < lldi->nrxq; i++) | |
1774 | log_debug(1 << CXGBI_DBG_DEV, | |
1775 | "t4 0x%p, rxq id #%d: %u.\n", | |
1776 | cdev, i, lldi->rxq_ids[i]); | |
1777 | ||
1778 | memcpy(cxgbi_cdev_priv(cdev), lldi, sizeof(*lldi)); | |
1779 | cdev->flags = CXGBI_FLAG_DEV_T4; | |
1780 | cdev->pdev = lldi->pdev; | |
1781 | cdev->ports = lldi->ports; | |
1782 | cdev->nports = lldi->nports; | |
1783 | cdev->mtus = lldi->mtus; | |
1784 | cdev->nmtus = NMTUS; | |
7b36b6e0 | 1785 | cdev->rx_credit_thres = cxgb4i_rx_credit_thres; |
1786 | cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN; | |
1787 | cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr); | |
1788 | cdev->itp = &cxgb4i_iscsi_transport; | |
1789 | ||
d7990b0c AB |
1790 | cdev->pfvf = FW_VIID_PFN_G(cxgb4_port_viid(lldi->ports[0])) |
1791 | << FW_VIID_PFN_S; | |
e27d6169 | 1792 | pr_info("cdev 0x%p,%s, pfvf %u.\n", |
1793 | cdev, lldi->ports[0]->name, cdev->pfvf); | |
1794 | ||
7b36b6e0 | 1795 | rc = cxgb4i_ddp_init(cdev); |
1796 | if (rc) { | |
1797 | pr_info("t4 0x%p ddp init failed.\n", cdev); | |
1798 | goto err_out; | |
1799 | } | |
1800 | rc = cxgb4i_ofld_init(cdev); | |
1801 | if (rc) { | |
1802 | pr_info("t4 0x%p ofld init failed.\n", cdev); | |
1803 | goto err_out; | |
1804 | } | |
1805 | ||
1806 | rc = cxgbi_hbas_add(cdev, CXGB4I_MAX_LUN, CXGBI_MAX_CONN, | |
1807 | &cxgb4i_host_template, cxgb4i_stt); | |
1808 | if (rc) | |
1809 | goto err_out; | |
1810 | ||
1811 | for (i = 0; i < cdev->nports; i++) { | |
1812 | pi = netdev_priv(lldi->ports[i]); | |
1813 | cdev->hbas[i]->port_id = pi->port_id; | |
1814 | } | |
1815 | return cdev; | |
1816 | ||
1817 | err_out: | |
1818 | cxgbi_device_unregister(cdev); | |
1819 | return ERR_PTR(-ENOMEM); | |
1820 | } | |
1821 | ||
1822 | #define RX_PULL_LEN 128 | |
1823 | static int t4_uld_rx_handler(void *handle, const __be64 *rsp, | |
1824 | const struct pkt_gl *pgl) | |
1825 | { | |
1826 | const struct cpl_act_establish *rpl; | |
1827 | struct sk_buff *skb; | |
1828 | unsigned int opc; | |
1829 | struct cxgbi_device *cdev = handle; | |
1830 | ||
1831 | if (pgl == NULL) { | |
1832 | unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; | |
1833 | ||
24d3f95a | 1834 | skb = alloc_wr(len, 0, GFP_ATOMIC); |
7b36b6e0 | 1835 | if (!skb) |
1836 | goto nomem; | |
1837 | skb_copy_to_linear_data(skb, &rsp[1], len); | |
1838 | } else { | |
1839 | if (unlikely(*(u8 *)rsp != *(u8 *)pgl->va)) { | |
1840 | pr_info("? FL 0x%p,RSS%#llx,FL %#llx,len %u.\n", | |
1841 | pgl->va, be64_to_cpu(*rsp), | |
1842 | be64_to_cpu(*(u64 *)pgl->va), | |
1843 | pgl->tot_len); | |
1844 | return 0; | |
1845 | } | |
1846 | skb = cxgb4_pktgl_to_skb(pgl, RX_PULL_LEN, RX_PULL_LEN); | |
1847 | if (unlikely(!skb)) | |
1848 | goto nomem; | |
1849 | } | |
1850 | ||
1851 | rpl = (struct cpl_act_establish *)skb->data; | |
1852 | opc = rpl->ot.opcode; | |
1853 | log_debug(1 << CXGBI_DBG_TOE, | |
1854 | "cdev %p, opcode 0x%x(0x%x,0x%x), skb %p.\n", | |
1855 | cdev, opc, rpl->ot.opcode_tid, ntohl(rpl->ot.opcode_tid), skb); | |
1856 | if (cxgb4i_cplhandlers[opc]) | |
1857 | cxgb4i_cplhandlers[opc](cdev, skb); | |
1858 | else { | |
1859 | pr_err("No handler for opcode 0x%x.\n", opc); | |
1860 | __kfree_skb(skb); | |
1861 | } | |
1862 | return 0; | |
1863 | nomem: | |
1864 | log_debug(1 << CXGBI_DBG_TOE, "OOM bailing out.\n"); | |
1865 | return 1; | |
1866 | } | |
1867 | ||
1868 | static int t4_uld_state_change(void *handle, enum cxgb4_state state) | |
1869 | { | |
1870 | struct cxgbi_device *cdev = handle; | |
1871 | ||
1872 | switch (state) { | |
1873 | case CXGB4_STATE_UP: | |
1874 | pr_info("cdev 0x%p, UP.\n", cdev); | |
7b36b6e0 | 1875 | break; |
1876 | case CXGB4_STATE_START_RECOVERY: | |
1877 | pr_info("cdev 0x%p, RECOVERY.\n", cdev); | |
1878 | /* close all connections */ | |
1879 | break; | |
1880 | case CXGB4_STATE_DOWN: | |
1881 | pr_info("cdev 0x%p, DOWN.\n", cdev); | |
1882 | break; | |
1883 | case CXGB4_STATE_DETACH: | |
1884 | pr_info("cdev 0x%p, DETACH.\n", cdev); | |
c3b331a3 | 1885 | cxgbi_device_unregister(cdev); |
7b36b6e0 | 1886 | break; |
1887 | default: | |
1888 | pr_info("cdev 0x%p, unknown state %d.\n", cdev, state); | |
1889 | break; | |
1890 | } | |
1891 | return 0; | |
1892 | } | |
1893 | ||
1894 | static int __init cxgb4i_init_module(void) | |
1895 | { | |
1896 | int rc; | |
1897 | ||
1898 | printk(KERN_INFO "%s", version); | |
1899 | ||
1900 | rc = cxgbi_iscsi_init(&cxgb4i_iscsi_transport, &cxgb4i_stt); | |
1901 | if (rc < 0) | |
1902 | return rc; | |
1903 | cxgb4_register_uld(CXGB4_ULD_ISCSI, &cxgb4i_uld_info); | |
759a0cc5 | 1904 | |
7b36b6e0 | 1905 | return 0; |
1906 | } | |
1907 | ||
1908 | static void __exit cxgb4i_exit_module(void) | |
1909 | { | |
1910 | cxgb4_unregister_uld(CXGB4_ULD_ISCSI); | |
1911 | cxgbi_device_unregister_all(CXGBI_FLAG_DEV_T4); | |
1912 | cxgbi_iscsi_cleanup(&cxgb4i_iscsi_transport, &cxgb4i_stt); | |
1913 | } | |
1914 | ||
1915 | module_init(cxgb4i_init_module); | |
1916 | module_exit(cxgb4i_exit_module); |