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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, | |
0fbc81b3 HS |
87 | .nrxq = MAX_ULD_QSETS, |
88 | .rxq_size = 1024, | |
89 | .lro = false, | |
7b36b6e0 | 90 | .add = t4_uld_add, |
91 | .rx_handler = t4_uld_rx_handler, | |
92 | .state_change = t4_uld_state_change, | |
93 | }; | |
94 | ||
95 | static struct scsi_host_template cxgb4i_host_template = { | |
96 | .module = THIS_MODULE, | |
97 | .name = DRV_MODULE_NAME, | |
98 | .proc_name = DRV_MODULE_NAME, | |
99 | .can_queue = CXGB4I_SCSI_HOST_QDEPTH, | |
100 | .queuecommand = iscsi_queuecommand, | |
db5ed4df | 101 | .change_queue_depth = scsi_change_queue_depth, |
7b36b6e0 | 102 | .sg_tablesize = SG_ALL, |
103 | .max_sectors = 0xFFFF, | |
104 | .cmd_per_lun = ISCSI_DEF_CMD_PER_LUN, | |
105 | .eh_abort_handler = iscsi_eh_abort, | |
106 | .eh_device_reset_handler = iscsi_eh_device_reset, | |
107 | .eh_target_reset_handler = iscsi_eh_recover_target, | |
108 | .target_alloc = iscsi_target_alloc, | |
109 | .use_clustering = DISABLE_CLUSTERING, | |
110 | .this_id = -1, | |
c40ecc12 | 111 | .track_queue_depth = 1, |
7b36b6e0 | 112 | }; |
113 | ||
114 | static struct iscsi_transport cxgb4i_iscsi_transport = { | |
115 | .owner = THIS_MODULE, | |
116 | .name = DRV_MODULE_NAME, | |
117 | .caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST | | |
118 | CAP_DATADGST | CAP_DIGEST_OFFLOAD | | |
fdafd4df | 119 | CAP_PADDING_OFFLOAD | CAP_TEXT_NEGO, |
3128c6c7 | 120 | .attr_is_visible = cxgbi_attr_is_visible, |
7b36b6e0 | 121 | .get_host_param = cxgbi_get_host_param, |
122 | .set_host_param = cxgbi_set_host_param, | |
123 | /* session management */ | |
124 | .create_session = cxgbi_create_session, | |
125 | .destroy_session = cxgbi_destroy_session, | |
126 | .get_session_param = iscsi_session_get_param, | |
127 | /* connection management */ | |
128 | .create_conn = cxgbi_create_conn, | |
129 | .bind_conn = cxgbi_bind_conn, | |
130 | .destroy_conn = iscsi_tcp_conn_teardown, | |
131 | .start_conn = iscsi_conn_start, | |
132 | .stop_conn = iscsi_conn_stop, | |
c71b9b66 | 133 | .get_conn_param = iscsi_conn_get_param, |
7b36b6e0 | 134 | .set_param = cxgbi_set_conn_param, |
135 | .get_stats = cxgbi_get_conn_stats, | |
136 | /* pdu xmit req from user space */ | |
137 | .send_pdu = iscsi_conn_send_pdu, | |
138 | /* task */ | |
139 | .init_task = iscsi_tcp_task_init, | |
140 | .xmit_task = iscsi_tcp_task_xmit, | |
141 | .cleanup_task = cxgbi_cleanup_task, | |
142 | /* pdu */ | |
143 | .alloc_pdu = cxgbi_conn_alloc_pdu, | |
144 | .init_pdu = cxgbi_conn_init_pdu, | |
145 | .xmit_pdu = cxgbi_conn_xmit_pdu, | |
146 | .parse_pdu_itt = cxgbi_parse_pdu_itt, | |
147 | /* TCP connect/disconnect */ | |
c71b9b66 | 148 | .get_ep_param = cxgbi_get_ep_param, |
7b36b6e0 | 149 | .ep_connect = cxgbi_ep_connect, |
150 | .ep_poll = cxgbi_ep_poll, | |
151 | .ep_disconnect = cxgbi_ep_disconnect, | |
152 | /* Error recovery timeout call */ | |
153 | .session_recovery_timedout = iscsi_session_recovery_timedout, | |
154 | }; | |
155 | ||
156 | static struct scsi_transport_template *cxgb4i_stt; | |
157 | ||
158 | /* | |
159 | * CPL (Chelsio Protocol Language) defines a message passing interface between | |
160 | * the host driver and Chelsio asic. | |
161 | * The section below implments CPLs that related to iscsi tcp connection | |
162 | * open/close/abort and data send/receive. | |
163 | */ | |
759a0cc5 | 164 | |
7b36b6e0 | 165 | #define RCV_BUFSIZ_MASK 0x3FFU |
d3074cce | 166 | #define MAX_IMM_TX_PKT_LEN 256 |
7b36b6e0 | 167 | |
7b36b6e0 | 168 | static int push_tx_frames(struct cxgbi_sock *, int); |
169 | ||
170 | /* | |
171 | * is_ofld_imm - check whether a packet can be sent as immediate data | |
172 | * @skb: the packet | |
173 | * | |
174 | * Returns true if a packet can be sent as an offload WR with immediate | |
175 | * data. We currently use the same limit as for Ethernet packets. | |
176 | */ | |
84944d8c | 177 | static inline bool is_ofld_imm(const struct sk_buff *skb) |
7b36b6e0 | 178 | { |
84944d8c KX |
179 | int len = skb->len; |
180 | ||
181 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) | |
182 | len += sizeof(struct fw_ofld_tx_data_wr); | |
183 | ||
184 | return len <= MAX_IMM_TX_PKT_LEN; | |
7b36b6e0 | 185 | } |
186 | ||
187 | static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb, | |
188 | struct l2t_entry *e) | |
189 | { | |
3bd3e8bf | 190 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
759a0cc5 | 191 | int t4 = is_t4(lldi->adapter_type); |
7b36b6e0 | 192 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); |
193 | unsigned long long opt0; | |
194 | unsigned int opt2; | |
195 | unsigned int qid_atid = ((unsigned int)csk->atid) | | |
196 | (((unsigned int)csk->rss_qid) << 14); | |
197 | ||
d7990b0c AB |
198 | opt0 = KEEP_ALIVE_F | |
199 | WND_SCALE_V(wscale) | | |
200 | MSS_IDX_V(csk->mss_idx) | | |
201 | L2T_IDX_V(((struct l2t_entry *)csk->l2t)->idx) | | |
202 | TX_CHAN_V(csk->tx_chan) | | |
203 | SMAC_SEL_V(csk->smac_idx) | | |
204 | ULP_MODE_V(ULP_MODE_ISCSI) | | |
81daf10c | 205 | RCV_BUFSIZ_V(csk->rcv_win >> 10); |
1eb88a5d | 206 | |
d7990b0c AB |
207 | opt2 = RX_CHANNEL_V(0) | |
208 | RSS_QUEUE_VALID_F | | |
d7990b0c | 209 | RSS_QUEUE_V(csk->rss_qid); |
7b36b6e0 | 210 | |
3bd3e8bf KX |
211 | if (is_t4(lldi->adapter_type)) { |
212 | struct cpl_act_open_req *req = | |
213 | (struct cpl_act_open_req *)skb->head; | |
214 | ||
3bd3e8bf KX |
215 | INIT_TP_WR(req, 0); |
216 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
7b36b6e0 | 217 | qid_atid)); |
3bd3e8bf KX |
218 | req->local_port = csk->saddr.sin_port; |
219 | req->peer_port = csk->daddr.sin_port; | |
220 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
221 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
222 | req->opt0 = cpu_to_be64(opt0); | |
ac0245ff KX |
223 | req->params = cpu_to_be32(cxgb4_select_ntuple( |
224 | csk->cdev->ports[csk->port_id], | |
225 | csk->l2t)); | |
d7990b0c | 226 | opt2 |= RX_FC_VALID_F; |
3bd3e8bf | 227 | req->opt2 = cpu_to_be32(opt2); |
7b36b6e0 | 228 | |
3bd3e8bf KX |
229 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
230 | "csk t4 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
231 | csk, &req->local_ip, ntohs(req->local_port), | |
232 | &req->peer_ip, ntohs(req->peer_port), | |
233 | csk->atid, csk->rss_qid); | |
234 | } else { | |
235 | struct cpl_t5_act_open_req *req = | |
236 | (struct cpl_t5_act_open_req *)skb->head; | |
1eb88a5d | 237 | u32 isn = (prandom_u32() & ~7UL) - 1; |
3bd3e8bf | 238 | |
3bd3e8bf KX |
239 | INIT_TP_WR(req, 0); |
240 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
241 | qid_atid)); | |
242 | req->local_port = csk->saddr.sin_port; | |
243 | req->peer_port = csk->daddr.sin_port; | |
244 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
245 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
246 | req->opt0 = cpu_to_be64(opt0); | |
d7990b0c | 247 | req->params = cpu_to_be64(FILTER_TUPLE_V( |
ac0245ff KX |
248 | cxgb4_select_ntuple( |
249 | csk->cdev->ports[csk->port_id], | |
250 | csk->l2t))); | |
1eb88a5d KX |
251 | req->rsvd = cpu_to_be32(isn); |
252 | opt2 |= T5_ISS_VALID; | |
253 | opt2 |= T5_OPT_2_VALID_F; | |
254 | ||
3bd3e8bf KX |
255 | req->opt2 = cpu_to_be32(opt2); |
256 | ||
257 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
258 | "csk t5 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
259 | csk, &req->local_ip, ntohs(req->local_port), | |
260 | &req->peer_ip, ntohs(req->peer_port), | |
261 | csk->atid, csk->rss_qid); | |
262 | } | |
263 | ||
264 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); | |
759a0cc5 AB |
265 | |
266 | pr_info_ipaddr("t%d csk 0x%p,%u,0x%lx,%u, rss_qid %u.\n", | |
267 | (&csk->saddr), (&csk->daddr), t4 ? 4 : 5, csk, | |
268 | csk->state, csk->flags, csk->atid, csk->rss_qid); | |
269 | ||
270 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
271 | } | |
272 | ||
f42bb57c | 273 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
274 | static void send_act_open_req6(struct cxgbi_sock *csk, struct sk_buff *skb, |
275 | struct l2t_entry *e) | |
276 | { | |
277 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); | |
278 | int t4 = is_t4(lldi->adapter_type); | |
279 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); | |
280 | unsigned long long opt0; | |
281 | unsigned int opt2; | |
282 | unsigned int qid_atid = ((unsigned int)csk->atid) | | |
283 | (((unsigned int)csk->rss_qid) << 14); | |
284 | ||
d7990b0c AB |
285 | opt0 = KEEP_ALIVE_F | |
286 | WND_SCALE_V(wscale) | | |
287 | MSS_IDX_V(csk->mss_idx) | | |
288 | L2T_IDX_V(((struct l2t_entry *)csk->l2t)->idx) | | |
289 | TX_CHAN_V(csk->tx_chan) | | |
290 | SMAC_SEL_V(csk->smac_idx) | | |
291 | ULP_MODE_V(ULP_MODE_ISCSI) | | |
81daf10c | 292 | RCV_BUFSIZ_V(csk->rcv_win >> 10); |
759a0cc5 | 293 | |
d7990b0c AB |
294 | opt2 = RX_CHANNEL_V(0) | |
295 | RSS_QUEUE_VALID_F | | |
296 | RX_FC_DISABLE_F | | |
297 | RSS_QUEUE_V(csk->rss_qid); | |
759a0cc5 AB |
298 | |
299 | if (t4) { | |
300 | struct cpl_act_open_req6 *req = | |
301 | (struct cpl_act_open_req6 *)skb->head; | |
302 | ||
303 | INIT_TP_WR(req, 0); | |
304 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
305 | qid_atid)); | |
306 | req->local_port = csk->saddr6.sin6_port; | |
307 | req->peer_port = csk->daddr6.sin6_port; | |
308 | ||
309 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
310 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
311 | 8); | |
312 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
313 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
314 | 8); | |
315 | ||
316 | req->opt0 = cpu_to_be64(opt0); | |
317 | ||
d7990b0c | 318 | opt2 |= RX_FC_VALID_F; |
759a0cc5 AB |
319 | req->opt2 = cpu_to_be32(opt2); |
320 | ||
321 | req->params = cpu_to_be32(cxgb4_select_ntuple( | |
322 | csk->cdev->ports[csk->port_id], | |
323 | csk->l2t)); | |
324 | } else { | |
325 | struct cpl_t5_act_open_req6 *req = | |
326 | (struct cpl_t5_act_open_req6 *)skb->head; | |
327 | ||
328 | INIT_TP_WR(req, 0); | |
329 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
330 | qid_atid)); | |
331 | req->local_port = csk->saddr6.sin6_port; | |
332 | req->peer_port = csk->daddr6.sin6_port; | |
333 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
334 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
335 | 8); | |
336 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
337 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
338 | 8); | |
339 | req->opt0 = cpu_to_be64(opt0); | |
340 | ||
d7990b0c | 341 | opt2 |= T5_OPT_2_VALID_F; |
759a0cc5 AB |
342 | req->opt2 = cpu_to_be32(opt2); |
343 | ||
d7990b0c | 344 | req->params = cpu_to_be64(FILTER_TUPLE_V(cxgb4_select_ntuple( |
759a0cc5 AB |
345 | csk->cdev->ports[csk->port_id], |
346 | csk->l2t))); | |
347 | } | |
348 | ||
349 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); | |
350 | ||
351 | pr_info("t%d csk 0x%p,%u,0x%lx,%u, [%pI6]:%u-[%pI6]:%u, rss_qid %u.\n", | |
352 | t4 ? 4 : 5, csk, csk->state, csk->flags, csk->atid, | |
353 | &csk->saddr6.sin6_addr, ntohs(csk->saddr.sin_port), | |
354 | &csk->daddr6.sin6_addr, ntohs(csk->daddr.sin_port), | |
355 | csk->rss_qid); | |
356 | ||
7b36b6e0 | 357 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); |
358 | } | |
f42bb57c | 359 | #endif |
7b36b6e0 | 360 | |
361 | static void send_close_req(struct cxgbi_sock *csk) | |
362 | { | |
363 | struct sk_buff *skb = csk->cpl_close; | |
364 | struct cpl_close_con_req *req = (struct cpl_close_con_req *)skb->head; | |
365 | unsigned int tid = csk->tid; | |
366 | ||
367 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
368 | "csk 0x%p,%u,0x%lx, tid %u.\n", | |
369 | csk, csk->state, csk->flags, csk->tid); | |
370 | csk->cpl_close = NULL; | |
371 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); | |
372 | INIT_TP_WR(req, tid); | |
373 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid)); | |
374 | req->rsvd = 0; | |
375 | ||
376 | cxgbi_sock_skb_entail(csk, skb); | |
377 | if (csk->state >= CTP_ESTABLISHED) | |
378 | push_tx_frames(csk, 1); | |
379 | } | |
380 | ||
381 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
382 | { | |
383 | struct cxgbi_sock *csk = (struct cxgbi_sock *)handle; | |
384 | struct cpl_abort_req *req; | |
385 | ||
386 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
387 | "csk 0x%p,%u,0x%lx, tid %u, abort.\n", | |
388 | csk, csk->state, csk->flags, csk->tid); | |
389 | req = (struct cpl_abort_req *)skb->data; | |
390 | req->cmd = CPL_ABORT_NO_RST; | |
391 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
392 | } | |
393 | ||
394 | static void send_abort_req(struct cxgbi_sock *csk) | |
395 | { | |
396 | struct cpl_abort_req *req; | |
397 | struct sk_buff *skb = csk->cpl_abort_req; | |
398 | ||
399 | if (unlikely(csk->state == CTP_ABORTING) || !skb || !csk->cdev) | |
400 | return; | |
64bfead8 KX |
401 | |
402 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
403 | send_tx_flowc_wr(csk); | |
404 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
405 | } | |
406 | ||
7b36b6e0 | 407 | cxgbi_sock_set_state(csk, CTP_ABORTING); |
408 | cxgbi_sock_set_flag(csk, CTPF_ABORT_RPL_PENDING); | |
409 | cxgbi_sock_purge_write_queue(csk); | |
410 | ||
411 | csk->cpl_abort_req = NULL; | |
412 | req = (struct cpl_abort_req *)skb->head; | |
2126bc5e | 413 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 414 | req->cmd = CPL_ABORT_SEND_RST; |
415 | t4_set_arp_err_handler(skb, csk, abort_arp_failure); | |
416 | INIT_TP_WR(req, csk->tid); | |
417 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, csk->tid)); | |
418 | req->rsvd0 = htonl(csk->snd_nxt); | |
419 | req->rsvd1 = !cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT); | |
420 | ||
421 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
422 | "csk 0x%p,%u,0x%lx,%u, snd_nxt %u, 0x%x.\n", | |
423 | csk, csk->state, csk->flags, csk->tid, csk->snd_nxt, | |
424 | req->rsvd1); | |
425 | ||
426 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
427 | } | |
428 | ||
429 | static void send_abort_rpl(struct cxgbi_sock *csk, int rst_status) | |
430 | { | |
431 | struct sk_buff *skb = csk->cpl_abort_rpl; | |
432 | struct cpl_abort_rpl *rpl = (struct cpl_abort_rpl *)skb->head; | |
433 | ||
434 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
435 | "csk 0x%p,%u,0x%lx,%u, status %d.\n", | |
436 | csk, csk->state, csk->flags, csk->tid, rst_status); | |
437 | ||
438 | csk->cpl_abort_rpl = NULL; | |
2126bc5e | 439 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 440 | INIT_TP_WR(rpl, csk->tid); |
441 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, csk->tid)); | |
442 | rpl->cmd = rst_status; | |
443 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
444 | } | |
445 | ||
446 | /* | |
447 | * CPL connection rx data ack: host -> | |
448 | * Send RX credits through an RX_DATA_ACK CPL message. Returns the number of | |
449 | * credits sent. | |
450 | */ | |
451 | static u32 send_rx_credits(struct cxgbi_sock *csk, u32 credits) | |
452 | { | |
453 | struct sk_buff *skb; | |
454 | struct cpl_rx_data_ack *req; | |
455 | ||
456 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
457 | "csk 0x%p,%u,0x%lx,%u, credit %u.\n", | |
458 | csk, csk->state, csk->flags, csk->tid, credits); | |
459 | ||
24d3f95a | 460 | skb = alloc_wr(sizeof(*req), 0, GFP_ATOMIC); |
7b36b6e0 | 461 | if (!skb) { |
462 | pr_info("csk 0x%p, credit %u, OOM.\n", csk, credits); | |
463 | return 0; | |
464 | } | |
465 | req = (struct cpl_rx_data_ack *)skb->head; | |
466 | ||
467 | set_wr_txq(skb, CPL_PRIORITY_ACK, csk->port_id); | |
468 | INIT_TP_WR(req, csk->tid); | |
469 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
470 | csk->tid)); | |
d7990b0c AB |
471 | req->credit_dack = cpu_to_be32(RX_CREDITS_V(credits) |
472 | | RX_FORCE_ACK_F); | |
7b36b6e0 | 473 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
474 | return credits; | |
475 | } | |
476 | ||
477 | /* | |
478 | * sgl_len - calculates the size of an SGL of the given capacity | |
479 | * @n: the number of SGL entries | |
480 | * Calculates the number of flits needed for a scatter/gather list that | |
481 | * can hold the given number of entries. | |
482 | */ | |
483 | static inline unsigned int sgl_len(unsigned int n) | |
484 | { | |
485 | n--; | |
486 | return (3 * n) / 2 + (n & 1) + 2; | |
487 | } | |
488 | ||
489 | /* | |
490 | * calc_tx_flits_ofld - calculate # of flits for an offload packet | |
491 | * @skb: the packet | |
492 | * | |
493 | * Returns the number of flits needed for the given offload packet. | |
494 | * These packets are already fully constructed and no additional headers | |
495 | * will be added. | |
496 | */ | |
497 | static inline unsigned int calc_tx_flits_ofld(const struct sk_buff *skb) | |
498 | { | |
499 | unsigned int flits, cnt; | |
500 | ||
501 | if (is_ofld_imm(skb)) | |
502 | return DIV_ROUND_UP(skb->len, 8); | |
503 | flits = skb_transport_offset(skb) / 8; | |
504 | cnt = skb_shinfo(skb)->nr_frags; | |
499e2e6f | 505 | if (skb_tail_pointer(skb) != skb_transport_header(skb)) |
7b36b6e0 | 506 | cnt++; |
507 | return flits + sgl_len(cnt); | |
508 | } | |
509 | ||
64bfead8 KX |
510 | #define FLOWC_WR_NPARAMS_MIN 9 |
511 | static inline int tx_flowc_wr_credits(int *nparamsp, int *flowclenp) | |
512 | { | |
513 | int nparams, flowclen16, flowclen; | |
514 | ||
515 | nparams = FLOWC_WR_NPARAMS_MIN; | |
516 | flowclen = offsetof(struct fw_flowc_wr, mnemval[nparams]); | |
517 | flowclen16 = DIV_ROUND_UP(flowclen, 16); | |
518 | flowclen = flowclen16 * 16; | |
519 | /* | |
520 | * Return the number of 16-byte credits used by the FlowC request. | |
521 | * Pass back the nparams and actual FlowC length if requested. | |
522 | */ | |
523 | if (nparamsp) | |
524 | *nparamsp = nparams; | |
525 | if (flowclenp) | |
526 | *flowclenp = flowclen; | |
527 | ||
528 | return flowclen16; | |
529 | } | |
530 | ||
531 | static inline int send_tx_flowc_wr(struct cxgbi_sock *csk) | |
7b36b6e0 | 532 | { |
533 | struct sk_buff *skb; | |
534 | struct fw_flowc_wr *flowc; | |
64bfead8 | 535 | int nparams, flowclen16, flowclen; |
7b36b6e0 | 536 | |
64bfead8 | 537 | flowclen16 = tx_flowc_wr_credits(&nparams, &flowclen); |
24d3f95a | 538 | skb = alloc_wr(flowclen, 0, GFP_ATOMIC); |
7b36b6e0 | 539 | flowc = (struct fw_flowc_wr *)skb->head; |
540 | flowc->op_to_nparams = | |
64bfead8 | 541 | htonl(FW_WR_OP_V(FW_FLOWC_WR) | FW_FLOWC_WR_NPARAMS_V(nparams)); |
7b36b6e0 | 542 | flowc->flowid_len16 = |
64bfead8 | 543 | htonl(FW_WR_LEN16_V(flowclen16) | FW_WR_FLOWID_V(csk->tid)); |
7b36b6e0 | 544 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; |
e27d6169 | 545 | flowc->mnemval[0].val = htonl(csk->cdev->pfvf); |
7b36b6e0 | 546 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
547 | flowc->mnemval[1].val = htonl(csk->tx_chan); | |
548 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
549 | flowc->mnemval[2].val = htonl(csk->tx_chan); | |
550 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
551 | flowc->mnemval[3].val = htonl(csk->rss_qid); | |
552 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
553 | flowc->mnemval[4].val = htonl(csk->snd_nxt); | |
554 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
555 | flowc->mnemval[5].val = htonl(csk->rcv_nxt); | |
556 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
81daf10c | 557 | flowc->mnemval[6].val = htonl(csk->snd_win); |
7b36b6e0 | 558 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; |
559 | flowc->mnemval[7].val = htonl(csk->advmss); | |
560 | flowc->mnemval[8].mnemonic = 0; | |
561 | flowc->mnemval[8].val = 0; | |
64bfead8 KX |
562 | flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_TXDATAPLEN_MAX; |
563 | flowc->mnemval[8].val = 16384; | |
564 | ||
2126bc5e | 565 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 566 | |
567 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
568 | "csk 0x%p, tid 0x%x, %u,%u,%u,%u,%u,%u,%u.\n", | |
569 | csk, csk->tid, 0, csk->tx_chan, csk->rss_qid, | |
81daf10c | 570 | csk->snd_nxt, csk->rcv_nxt, csk->snd_win, |
7b36b6e0 | 571 | csk->advmss); |
572 | ||
573 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
64bfead8 KX |
574 | |
575 | return flowclen16; | |
7b36b6e0 | 576 | } |
577 | ||
578 | static inline void make_tx_data_wr(struct cxgbi_sock *csk, struct sk_buff *skb, | |
579 | int dlen, int len, u32 credits, int compl) | |
580 | { | |
581 | struct fw_ofld_tx_data_wr *req; | |
582 | unsigned int submode = cxgbi_skcb_ulp_mode(skb) & 3; | |
e2ac9628 | 583 | unsigned int wr_ulp_mode = 0, val; |
7857c62a | 584 | bool imm = is_ofld_imm(skb); |
7b36b6e0 | 585 | |
586 | req = (struct fw_ofld_tx_data_wr *)__skb_push(skb, sizeof(*req)); | |
587 | ||
7857c62a | 588 | if (imm) { |
e2ac9628 HS |
589 | req->op_to_immdlen = htonl(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
590 | FW_WR_COMPL_F | | |
591 | FW_WR_IMMDLEN_V(dlen)); | |
592 | req->flowid_len16 = htonl(FW_WR_FLOWID_V(csk->tid) | | |
593 | FW_WR_LEN16_V(credits)); | |
7b36b6e0 | 594 | } else { |
595 | req->op_to_immdlen = | |
e2ac9628 HS |
596 | cpu_to_be32(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
597 | FW_WR_COMPL_F | | |
598 | FW_WR_IMMDLEN_V(0)); | |
7b36b6e0 | 599 | req->flowid_len16 = |
e2ac9628 HS |
600 | cpu_to_be32(FW_WR_FLOWID_V(csk->tid) | |
601 | FW_WR_LEN16_V(credits)); | |
7b36b6e0 | 602 | } |
603 | if (submode) | |
e2ac9628 HS |
604 | wr_ulp_mode = FW_OFLD_TX_DATA_WR_ULPMODE_V(ULP2_MODE_ISCSI) | |
605 | FW_OFLD_TX_DATA_WR_ULPSUBMODE_V(submode); | |
606 | val = skb_peek(&csk->write_queue) ? 0 : 1; | |
6aca4112 | 607 | req->tunnel_to_proxy = htonl(wr_ulp_mode | |
e2ac9628 | 608 | FW_OFLD_TX_DATA_WR_SHOVE_V(val)); |
7b36b6e0 | 609 | req->plen = htonl(len); |
610 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) | |
611 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
612 | } | |
613 | ||
614 | static void arp_failure_skb_discard(void *handle, struct sk_buff *skb) | |
615 | { | |
616 | kfree_skb(skb); | |
617 | } | |
618 | ||
619 | static int push_tx_frames(struct cxgbi_sock *csk, int req_completion) | |
620 | { | |
621 | int total_size = 0; | |
622 | struct sk_buff *skb; | |
623 | ||
624 | if (unlikely(csk->state < CTP_ESTABLISHED || | |
625 | csk->state == CTP_CLOSE_WAIT_1 || csk->state >= CTP_ABORTING)) { | |
626 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK | | |
627 | 1 << CXGBI_DBG_PDU_TX, | |
628 | "csk 0x%p,%u,0x%lx,%u, in closing state.\n", | |
629 | csk, csk->state, csk->flags, csk->tid); | |
630 | return 0; | |
631 | } | |
632 | ||
633 | while (csk->wr_cred && (skb = skb_peek(&csk->write_queue)) != NULL) { | |
634 | int dlen = skb->len; | |
635 | int len = skb->len; | |
636 | unsigned int credits_needed; | |
64bfead8 | 637 | int flowclen16 = 0; |
7b36b6e0 | 638 | |
639 | skb_reset_transport_header(skb); | |
640 | if (is_ofld_imm(skb)) | |
84944d8c | 641 | credits_needed = DIV_ROUND_UP(dlen, 16); |
7b36b6e0 | 642 | else |
84944d8c KX |
643 | credits_needed = DIV_ROUND_UP( |
644 | 8 * calc_tx_flits_ofld(skb), | |
645 | 16); | |
646 | ||
647 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) | |
648 | credits_needed += DIV_ROUND_UP( | |
649 | sizeof(struct fw_ofld_tx_data_wr), | |
7b36b6e0 | 650 | 16); |
651 | ||
64bfead8 KX |
652 | /* |
653 | * Assumes the initial credits is large enough to support | |
654 | * fw_flowc_wr plus largest possible first payload | |
655 | */ | |
656 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
657 | flowclen16 = send_tx_flowc_wr(csk); | |
658 | csk->wr_cred -= flowclen16; | |
659 | csk->wr_una_cred += flowclen16; | |
660 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
661 | } | |
662 | ||
7b36b6e0 | 663 | if (csk->wr_cred < credits_needed) { |
664 | log_debug(1 << CXGBI_DBG_PDU_TX, | |
665 | "csk 0x%p, skb %u/%u, wr %d < %u.\n", | |
666 | csk, skb->len, skb->data_len, | |
667 | credits_needed, csk->wr_cred); | |
668 | break; | |
669 | } | |
670 | __skb_unlink(skb, &csk->write_queue); | |
2126bc5e | 671 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
64bfead8 | 672 | skb->csum = credits_needed + flowclen16; |
7b36b6e0 | 673 | csk->wr_cred -= credits_needed; |
674 | csk->wr_una_cred += credits_needed; | |
675 | cxgbi_sock_enqueue_wr(csk, skb); | |
676 | ||
677 | log_debug(1 << CXGBI_DBG_PDU_TX, | |
678 | "csk 0x%p, skb %u/%u, wr %d, left %u, unack %u.\n", | |
679 | csk, skb->len, skb->data_len, credits_needed, | |
680 | csk->wr_cred, csk->wr_una_cred); | |
681 | ||
682 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) { | |
7b36b6e0 | 683 | len += cxgbi_ulp_extra_len(cxgbi_skcb_ulp_mode(skb)); |
684 | make_tx_data_wr(csk, skb, dlen, len, credits_needed, | |
685 | req_completion); | |
686 | csk->snd_nxt += len; | |
687 | cxgbi_skcb_clear_flag(skb, SKCBF_TX_NEED_HDR); | |
688 | } | |
689 | total_size += skb->truesize; | |
690 | t4_set_arp_err_handler(skb, csk, arp_failure_skb_discard); | |
691 | ||
692 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_TX, | |
693 | "csk 0x%p,%u,0x%lx,%u, skb 0x%p, %u.\n", | |
694 | csk, csk->state, csk->flags, csk->tid, skb, len); | |
695 | ||
696 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
697 | } | |
698 | return total_size; | |
699 | } | |
700 | ||
701 | static inline void free_atid(struct cxgbi_sock *csk) | |
702 | { | |
703 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); | |
704 | ||
705 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) { | |
706 | cxgb4_free_atid(lldi->tids, csk->atid); | |
707 | cxgbi_sock_clear_flag(csk, CTPF_HAS_ATID); | |
708 | cxgbi_sock_put(csk); | |
709 | } | |
710 | } | |
711 | ||
712 | static void do_act_establish(struct cxgbi_device *cdev, struct sk_buff *skb) | |
713 | { | |
714 | struct cxgbi_sock *csk; | |
715 | struct cpl_act_establish *req = (struct cpl_act_establish *)skb->data; | |
716 | unsigned short tcp_opt = ntohs(req->tcp_opt); | |
717 | unsigned int tid = GET_TID(req); | |
6c53e938 | 718 | unsigned int atid = TID_TID_G(ntohl(req->tos_atid)); |
7b36b6e0 | 719 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
720 | struct tid_info *t = lldi->tids; | |
721 | u32 rcv_isn = be32_to_cpu(req->rcv_isn); | |
722 | ||
723 | csk = lookup_atid(t, atid); | |
724 | if (unlikely(!csk)) { | |
725 | pr_err("NO conn. for atid %u, cdev 0x%p.\n", atid, cdev); | |
726 | goto rel_skb; | |
727 | } | |
728 | ||
e27d6169 | 729 | if (csk->atid != atid) { |
730 | pr_err("bad conn atid %u, csk 0x%p,%u,0x%lx,tid %u, atid %u.\n", | |
731 | atid, csk, csk->state, csk->flags, csk->tid, csk->atid); | |
732 | goto rel_skb; | |
733 | } | |
734 | ||
759a0cc5 AB |
735 | pr_info_ipaddr("atid 0x%x, tid 0x%x, csk 0x%p,%u,0x%lx, isn %u.\n", |
736 | (&csk->saddr), (&csk->daddr), | |
737 | atid, tid, csk, csk->state, csk->flags, rcv_isn); | |
738 | ||
739 | module_put(THIS_MODULE); | |
7b36b6e0 | 740 | |
741 | cxgbi_sock_get(csk); | |
742 | csk->tid = tid; | |
743 | cxgb4_insert_tid(lldi->tids, csk, tid); | |
744 | cxgbi_sock_set_flag(csk, CTPF_HAS_TID); | |
745 | ||
746 | free_atid(csk); | |
747 | ||
748 | spin_lock_bh(&csk->lock); | |
749 | if (unlikely(csk->state != CTP_ACTIVE_OPEN)) | |
750 | pr_info("csk 0x%p,%u,0x%lx,%u, got EST.\n", | |
751 | csk, csk->state, csk->flags, csk->tid); | |
752 | ||
753 | if (csk->retry_timer.function) { | |
754 | del_timer(&csk->retry_timer); | |
755 | csk->retry_timer.function = NULL; | |
756 | } | |
757 | ||
758 | csk->copied_seq = csk->rcv_wup = csk->rcv_nxt = rcv_isn; | |
759 | /* | |
760 | * Causes the first RX_DATA_ACK to supply any Rx credits we couldn't | |
761 | * pass through opt0. | |
762 | */ | |
81daf10c KX |
763 | if (csk->rcv_win > (RCV_BUFSIZ_MASK << 10)) |
764 | csk->rcv_wup -= csk->rcv_win - (RCV_BUFSIZ_MASK << 10); | |
7b36b6e0 | 765 | |
6c53e938 HS |
766 | csk->advmss = lldi->mtus[TCPOPT_MSS_G(tcp_opt)] - 40; |
767 | if (TCPOPT_TSTAMP_G(tcp_opt)) | |
7b36b6e0 | 768 | csk->advmss -= 12; |
769 | if (csk->advmss < 128) | |
770 | csk->advmss = 128; | |
771 | ||
772 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
773 | "csk 0x%p, mss_idx %u, advmss %u.\n", | |
6c53e938 | 774 | csk, TCPOPT_MSS_G(tcp_opt), csk->advmss); |
7b36b6e0 | 775 | |
776 | cxgbi_sock_established(csk, ntohl(req->snd_isn), ntohs(req->tcp_opt)); | |
777 | ||
778 | if (unlikely(cxgbi_sock_flag(csk, CTPF_ACTIVE_CLOSE_NEEDED))) | |
779 | send_abort_req(csk); | |
780 | else { | |
781 | if (skb_queue_len(&csk->write_queue)) | |
782 | push_tx_frames(csk, 0); | |
783 | cxgbi_conn_tx_open(csk); | |
784 | } | |
785 | spin_unlock_bh(&csk->lock); | |
786 | ||
787 | rel_skb: | |
788 | __kfree_skb(skb); | |
789 | } | |
790 | ||
791 | static int act_open_rpl_status_to_errno(int status) | |
792 | { | |
793 | switch (status) { | |
794 | case CPL_ERR_CONN_RESET: | |
795 | return -ECONNREFUSED; | |
796 | case CPL_ERR_ARP_MISS: | |
797 | return -EHOSTUNREACH; | |
798 | case CPL_ERR_CONN_TIMEDOUT: | |
799 | return -ETIMEDOUT; | |
800 | case CPL_ERR_TCAM_FULL: | |
801 | return -ENOMEM; | |
802 | case CPL_ERR_CONN_EXIST: | |
803 | return -EADDRINUSE; | |
804 | default: | |
805 | return -EIO; | |
806 | } | |
807 | } | |
808 | ||
809 | static void csk_act_open_retry_timer(unsigned long data) | |
810 | { | |
001586a7 | 811 | struct sk_buff *skb = NULL; |
7b36b6e0 | 812 | struct cxgbi_sock *csk = (struct cxgbi_sock *)data; |
3bd3e8bf | 813 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
759a0cc5 AB |
814 | void (*send_act_open_func)(struct cxgbi_sock *, struct sk_buff *, |
815 | struct l2t_entry *); | |
816 | int t4 = is_t4(lldi->adapter_type), size, size6; | |
7b36b6e0 | 817 | |
818 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
819 | "csk 0x%p,%u,0x%lx,%u.\n", | |
820 | csk, csk->state, csk->flags, csk->tid); | |
821 | ||
822 | cxgbi_sock_get(csk); | |
823 | spin_lock_bh(&csk->lock); | |
759a0cc5 AB |
824 | |
825 | if (t4) { | |
826 | size = sizeof(struct cpl_act_open_req); | |
827 | size6 = sizeof(struct cpl_act_open_req6); | |
828 | } else { | |
829 | size = sizeof(struct cpl_t5_act_open_req); | |
830 | size6 = sizeof(struct cpl_t5_act_open_req6); | |
831 | } | |
832 | ||
833 | if (csk->csk_family == AF_INET) { | |
834 | send_act_open_func = send_act_open_req; | |
835 | skb = alloc_wr(size, 0, GFP_ATOMIC); | |
f42bb57c | 836 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
837 | } else { |
838 | send_act_open_func = send_act_open_req6; | |
839 | skb = alloc_wr(size6, 0, GFP_ATOMIC); | |
f42bb57c | 840 | #endif |
759a0cc5 AB |
841 | } |
842 | ||
7b36b6e0 | 843 | if (!skb) |
844 | cxgbi_sock_fail_act_open(csk, -ENOMEM); | |
845 | else { | |
846 | skb->sk = (struct sock *)csk; | |
847 | t4_set_arp_err_handler(skb, csk, | |
759a0cc5 AB |
848 | cxgbi_sock_act_open_req_arp_failure); |
849 | send_act_open_func(csk, skb, csk->l2t); | |
7b36b6e0 | 850 | } |
759a0cc5 | 851 | |
7b36b6e0 | 852 | spin_unlock_bh(&csk->lock); |
853 | cxgbi_sock_put(csk); | |
759a0cc5 | 854 | |
7b36b6e0 | 855 | } |
856 | ||
928567ad KX |
857 | static inline bool is_neg_adv(unsigned int status) |
858 | { | |
859 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
860 | status == CPL_ERR_KEEPALV_NEG_ADVICE || | |
861 | status == CPL_ERR_PERSIST_NEG_ADVICE; | |
862 | } | |
863 | ||
7b36b6e0 | 864 | static void do_act_open_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) |
865 | { | |
866 | struct cxgbi_sock *csk; | |
867 | struct cpl_act_open_rpl *rpl = (struct cpl_act_open_rpl *)skb->data; | |
868 | unsigned int tid = GET_TID(rpl); | |
869 | unsigned int atid = | |
6c53e938 HS |
870 | TID_TID_G(AOPEN_ATID_G(be32_to_cpu(rpl->atid_status))); |
871 | unsigned int status = AOPEN_STATUS_G(be32_to_cpu(rpl->atid_status)); | |
7b36b6e0 | 872 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
873 | struct tid_info *t = lldi->tids; | |
874 | ||
875 | csk = lookup_atid(t, atid); | |
876 | if (unlikely(!csk)) { | |
877 | pr_err("NO matching conn. atid %u, tid %u.\n", atid, tid); | |
878 | goto rel_skb; | |
879 | } | |
880 | ||
759a0cc5 AB |
881 | pr_info_ipaddr("tid %u/%u, status %u.\n" |
882 | "csk 0x%p,%u,0x%lx. ", (&csk->saddr), (&csk->daddr), | |
883 | atid, tid, status, csk, csk->state, csk->flags); | |
7b36b6e0 | 884 | |
928567ad | 885 | if (is_neg_adv(status)) |
150cca7c KX |
886 | goto rel_skb; |
887 | ||
ee7255ad AB |
888 | module_put(THIS_MODULE); |
889 | ||
7b36b6e0 | 890 | if (status && status != CPL_ERR_TCAM_FULL && |
891 | status != CPL_ERR_CONN_EXIST && | |
892 | status != CPL_ERR_ARP_MISS) | |
893 | cxgb4_remove_tid(lldi->tids, csk->port_id, GET_TID(rpl)); | |
894 | ||
895 | cxgbi_sock_get(csk); | |
896 | spin_lock_bh(&csk->lock); | |
897 | ||
898 | if (status == CPL_ERR_CONN_EXIST && | |
899 | csk->retry_timer.function != csk_act_open_retry_timer) { | |
900 | csk->retry_timer.function = csk_act_open_retry_timer; | |
901 | mod_timer(&csk->retry_timer, jiffies + HZ / 2); | |
902 | } else | |
903 | cxgbi_sock_fail_act_open(csk, | |
904 | act_open_rpl_status_to_errno(status)); | |
905 | ||
906 | spin_unlock_bh(&csk->lock); | |
907 | cxgbi_sock_put(csk); | |
908 | rel_skb: | |
909 | __kfree_skb(skb); | |
910 | } | |
911 | ||
912 | static void do_peer_close(struct cxgbi_device *cdev, struct sk_buff *skb) | |
913 | { | |
914 | struct cxgbi_sock *csk; | |
915 | struct cpl_peer_close *req = (struct cpl_peer_close *)skb->data; | |
916 | unsigned int tid = GET_TID(req); | |
917 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
918 | struct tid_info *t = lldi->tids; | |
919 | ||
920 | csk = lookup_tid(t, tid); | |
921 | if (unlikely(!csk)) { | |
922 | pr_err("can't find connection for tid %u.\n", tid); | |
923 | goto rel_skb; | |
924 | } | |
759a0cc5 AB |
925 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", |
926 | (&csk->saddr), (&csk->daddr), | |
927 | csk, csk->state, csk->flags, csk->tid); | |
7b36b6e0 | 928 | cxgbi_sock_rcv_peer_close(csk); |
929 | rel_skb: | |
930 | __kfree_skb(skb); | |
931 | } | |
932 | ||
933 | static void do_close_con_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
934 | { | |
935 | struct cxgbi_sock *csk; | |
936 | struct cpl_close_con_rpl *rpl = (struct cpl_close_con_rpl *)skb->data; | |
937 | unsigned int tid = GET_TID(rpl); | |
938 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
939 | struct tid_info *t = lldi->tids; | |
940 | ||
941 | csk = lookup_tid(t, tid); | |
942 | if (unlikely(!csk)) { | |
943 | pr_err("can't find connection for tid %u.\n", tid); | |
944 | goto rel_skb; | |
945 | } | |
759a0cc5 AB |
946 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", |
947 | (&csk->saddr), (&csk->daddr), | |
948 | csk, csk->state, csk->flags, csk->tid); | |
7b36b6e0 | 949 | cxgbi_sock_rcv_close_conn_rpl(csk, ntohl(rpl->snd_nxt)); |
950 | rel_skb: | |
951 | __kfree_skb(skb); | |
952 | } | |
953 | ||
954 | static int abort_status_to_errno(struct cxgbi_sock *csk, int abort_reason, | |
955 | int *need_rst) | |
956 | { | |
957 | switch (abort_reason) { | |
958 | case CPL_ERR_BAD_SYN: /* fall through */ | |
959 | case CPL_ERR_CONN_RESET: | |
960 | return csk->state > CTP_ESTABLISHED ? | |
961 | -EPIPE : -ECONNRESET; | |
962 | case CPL_ERR_XMIT_TIMEDOUT: | |
963 | case CPL_ERR_PERSIST_TIMEDOUT: | |
964 | case CPL_ERR_FINWAIT2_TIMEDOUT: | |
965 | case CPL_ERR_KEEPALIVE_TIMEDOUT: | |
966 | return -ETIMEDOUT; | |
967 | default: | |
968 | return -EIO; | |
969 | } | |
970 | } | |
971 | ||
972 | static void do_abort_req_rss(struct cxgbi_device *cdev, struct sk_buff *skb) | |
973 | { | |
974 | struct cxgbi_sock *csk; | |
975 | struct cpl_abort_req_rss *req = (struct cpl_abort_req_rss *)skb->data; | |
976 | unsigned int tid = GET_TID(req); | |
977 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
978 | struct tid_info *t = lldi->tids; | |
979 | int rst_status = CPL_ABORT_NO_RST; | |
980 | ||
981 | csk = lookup_tid(t, tid); | |
982 | if (unlikely(!csk)) { | |
983 | pr_err("can't find connection for tid %u.\n", tid); | |
984 | goto rel_skb; | |
985 | } | |
986 | ||
759a0cc5 AB |
987 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", |
988 | (&csk->saddr), (&csk->daddr), | |
989 | csk, csk->state, csk->flags, csk->tid, req->status); | |
7b36b6e0 | 990 | |
928567ad | 991 | if (is_neg_adv(req->status)) |
7b36b6e0 | 992 | goto rel_skb; |
993 | ||
994 | cxgbi_sock_get(csk); | |
995 | spin_lock_bh(&csk->lock); | |
996 | ||
7b07bf24 AB |
997 | cxgbi_sock_clear_flag(csk, CTPF_ABORT_REQ_RCVD); |
998 | ||
999 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
1000 | send_tx_flowc_wr(csk); | |
1001 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
7b36b6e0 | 1002 | } |
1003 | ||
7b07bf24 AB |
1004 | cxgbi_sock_set_flag(csk, CTPF_ABORT_REQ_RCVD); |
1005 | cxgbi_sock_set_state(csk, CTP_ABORTING); | |
1006 | ||
7b36b6e0 | 1007 | send_abort_rpl(csk, rst_status); |
1008 | ||
1009 | if (!cxgbi_sock_flag(csk, CTPF_ABORT_RPL_PENDING)) { | |
1010 | csk->err = abort_status_to_errno(csk, req->status, &rst_status); | |
1011 | cxgbi_sock_closed(csk); | |
1012 | } | |
7b07bf24 | 1013 | |
7b36b6e0 | 1014 | spin_unlock_bh(&csk->lock); |
1015 | cxgbi_sock_put(csk); | |
1016 | rel_skb: | |
1017 | __kfree_skb(skb); | |
1018 | } | |
1019 | ||
1020 | static void do_abort_rpl_rss(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1021 | { | |
1022 | struct cxgbi_sock *csk; | |
1023 | struct cpl_abort_rpl_rss *rpl = (struct cpl_abort_rpl_rss *)skb->data; | |
1024 | unsigned int tid = GET_TID(rpl); | |
1025 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1026 | struct tid_info *t = lldi->tids; | |
1027 | ||
1028 | csk = lookup_tid(t, tid); | |
1029 | if (!csk) | |
1030 | goto rel_skb; | |
1031 | ||
759a0cc5 AB |
1032 | if (csk) |
1033 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", | |
1034 | (&csk->saddr), (&csk->daddr), csk, | |
1035 | csk->state, csk->flags, csk->tid, rpl->status); | |
7b36b6e0 | 1036 | |
1037 | if (rpl->status == CPL_ERR_ABORT_FAILED) | |
1038 | goto rel_skb; | |
1039 | ||
1040 | cxgbi_sock_rcv_abort_rpl(csk); | |
1041 | rel_skb: | |
1042 | __kfree_skb(skb); | |
1043 | } | |
1044 | ||
f7bcd2e1 KX |
1045 | static void do_rx_data(struct cxgbi_device *cdev, struct sk_buff *skb) |
1046 | { | |
1047 | struct cxgbi_sock *csk; | |
1048 | struct cpl_rx_data *cpl = (struct cpl_rx_data *)skb->data; | |
1049 | unsigned int tid = GET_TID(cpl); | |
1050 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1051 | struct tid_info *t = lldi->tids; | |
1052 | ||
1053 | csk = lookup_tid(t, tid); | |
1054 | if (!csk) { | |
1055 | pr_err("can't find connection for tid %u.\n", tid); | |
1056 | } else { | |
1057 | /* not expecting this, reset the connection. */ | |
1058 | pr_err("csk 0x%p, tid %u, rcv cpl_rx_data.\n", csk, tid); | |
1059 | spin_lock_bh(&csk->lock); | |
1060 | send_abort_req(csk); | |
1061 | spin_unlock_bh(&csk->lock); | |
1062 | } | |
1063 | __kfree_skb(skb); | |
1064 | } | |
1065 | ||
7b36b6e0 | 1066 | static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb) |
1067 | { | |
1068 | struct cxgbi_sock *csk; | |
1069 | struct cpl_iscsi_hdr *cpl = (struct cpl_iscsi_hdr *)skb->data; | |
1070 | unsigned short pdu_len_ddp = be16_to_cpu(cpl->pdu_len_ddp); | |
1071 | unsigned int tid = GET_TID(cpl); | |
1072 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1073 | struct tid_info *t = lldi->tids; | |
7b36b6e0 | 1074 | |
1075 | csk = lookup_tid(t, tid); | |
1076 | if (unlikely(!csk)) { | |
1077 | pr_err("can't find conn. for tid %u.\n", tid); | |
1078 | goto rel_skb; | |
1079 | } | |
1080 | ||
1081 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1082 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p,%u, 0x%x.\n", | |
1083 | csk, csk->state, csk->flags, csk->tid, skb, skb->len, | |
1084 | pdu_len_ddp); | |
1085 | ||
1086 | spin_lock_bh(&csk->lock); | |
1087 | ||
1088 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1089 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1090 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1091 | csk, csk->state, csk->flags, csk->tid); | |
1092 | if (csk->state != CTP_ABORTING) | |
1093 | goto abort_conn; | |
1094 | else | |
1095 | goto discard; | |
1096 | } | |
1097 | ||
1098 | cxgbi_skcb_tcp_seq(skb) = ntohl(cpl->seq); | |
e27d6169 | 1099 | cxgbi_skcb_flags(skb) = 0; |
1100 | ||
7b36b6e0 | 1101 | skb_reset_transport_header(skb); |
1102 | __skb_pull(skb, sizeof(*cpl)); | |
1103 | __pskb_trim(skb, ntohs(cpl->len)); | |
1104 | ||
1105 | if (!csk->skb_ulp_lhdr) { | |
1106 | unsigned char *bhs; | |
3bd3e8bf | 1107 | unsigned int hlen, dlen, plen; |
7b36b6e0 | 1108 | |
1109 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1110 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p header.\n", | |
1111 | csk, csk->state, csk->flags, csk->tid, skb); | |
1112 | csk->skb_ulp_lhdr = skb; | |
e27d6169 | 1113 | cxgbi_skcb_set_flag(skb, SKCBF_RX_HDR); |
7b36b6e0 | 1114 | |
e27d6169 | 1115 | if (cxgbi_skcb_tcp_seq(skb) != csk->rcv_nxt) { |
7b36b6e0 | 1116 | pr_info("tid %u, CPL_ISCSI_HDR, bad seq, 0x%x/0x%x.\n", |
e27d6169 | 1117 | csk->tid, cxgbi_skcb_tcp_seq(skb), |
7b36b6e0 | 1118 | csk->rcv_nxt); |
1119 | goto abort_conn; | |
1120 | } | |
1121 | ||
e27d6169 | 1122 | bhs = skb->data; |
7b36b6e0 | 1123 | hlen = ntohs(cpl->len); |
1124 | dlen = ntohl(*(unsigned int *)(bhs + 4)) & 0xFFFFFF; | |
1125 | ||
bdc590b9 | 1126 | plen = ISCSI_PDU_LEN_G(pdu_len_ddp); |
3bd3e8bf KX |
1127 | if (is_t4(lldi->adapter_type)) |
1128 | plen -= 40; | |
1129 | ||
1130 | if ((hlen + dlen) != plen) { | |
7b36b6e0 | 1131 | pr_info("tid 0x%x, CPL_ISCSI_HDR, pdu len " |
1132 | "mismatch %u != %u + %u, seq 0x%x.\n", | |
3bd3e8bf KX |
1133 | csk->tid, plen, hlen, dlen, |
1134 | cxgbi_skcb_tcp_seq(skb)); | |
7b36b6e0 | 1135 | goto abort_conn; |
1136 | } | |
1137 | ||
1138 | cxgbi_skcb_rx_pdulen(skb) = (hlen + dlen + 3) & (~0x3); | |
1139 | if (dlen) | |
1140 | cxgbi_skcb_rx_pdulen(skb) += csk->dcrc_len; | |
1141 | csk->rcv_nxt += cxgbi_skcb_rx_pdulen(skb); | |
1142 | ||
1143 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1144 | "csk 0x%p, skb 0x%p, 0x%x,%u+%u,0x%x,0x%x.\n", | |
1145 | csk, skb, *bhs, hlen, dlen, | |
1146 | ntohl(*((unsigned int *)(bhs + 16))), | |
1147 | ntohl(*((unsigned int *)(bhs + 24)))); | |
1148 | ||
1149 | } else { | |
e27d6169 | 1150 | struct sk_buff *lskb = csk->skb_ulp_lhdr; |
7b36b6e0 | 1151 | |
e27d6169 | 1152 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA); |
7b36b6e0 | 1153 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
1154 | "csk 0x%p,%u,0x%lx, skb 0x%p data, 0x%p.\n", | |
1155 | csk, csk->state, csk->flags, skb, lskb); | |
1156 | } | |
1157 | ||
1158 | __skb_queue_tail(&csk->receive_queue, skb); | |
1159 | spin_unlock_bh(&csk->lock); | |
1160 | return; | |
1161 | ||
1162 | abort_conn: | |
1163 | send_abort_req(csk); | |
1164 | discard: | |
1165 | spin_unlock_bh(&csk->lock); | |
1166 | rel_skb: | |
1167 | __kfree_skb(skb); | |
1168 | } | |
1169 | ||
1170 | static void do_rx_data_ddp(struct cxgbi_device *cdev, | |
1171 | struct sk_buff *skb) | |
1172 | { | |
1173 | struct cxgbi_sock *csk; | |
1174 | struct sk_buff *lskb; | |
1175 | struct cpl_rx_data_ddp *rpl = (struct cpl_rx_data_ddp *)skb->data; | |
1176 | unsigned int tid = GET_TID(rpl); | |
1177 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1178 | struct tid_info *t = lldi->tids; | |
1179 | unsigned int status = ntohl(rpl->ddpvld); | |
1180 | ||
1181 | csk = lookup_tid(t, tid); | |
1182 | if (unlikely(!csk)) { | |
1183 | pr_err("can't find connection for tid %u.\n", tid); | |
1184 | goto rel_skb; | |
1185 | } | |
1186 | ||
1187 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1188 | "csk 0x%p,%u,0x%lx, skb 0x%p,0x%x, lhdr 0x%p.\n", | |
1189 | csk, csk->state, csk->flags, skb, status, csk->skb_ulp_lhdr); | |
1190 | ||
1191 | spin_lock_bh(&csk->lock); | |
1192 | ||
1193 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1194 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1195 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1196 | csk, csk->state, csk->flags, csk->tid); | |
1197 | if (csk->state != CTP_ABORTING) | |
1198 | goto abort_conn; | |
1199 | else | |
1200 | goto discard; | |
1201 | } | |
1202 | ||
1203 | if (!csk->skb_ulp_lhdr) { | |
1204 | pr_err("tid 0x%x, rcv RX_DATA_DDP w/o pdu bhs.\n", csk->tid); | |
1205 | goto abort_conn; | |
1206 | } | |
1207 | ||
1208 | lskb = csk->skb_ulp_lhdr; | |
1209 | csk->skb_ulp_lhdr = NULL; | |
1210 | ||
7b36b6e0 | 1211 | cxgbi_skcb_rx_ddigest(lskb) = ntohl(rpl->ulp_crc); |
1212 | ||
1213 | if (ntohs(rpl->len) != cxgbi_skcb_rx_pdulen(lskb)) | |
1214 | pr_info("tid 0x%x, RX_DATA_DDP pdulen %u != %u.\n", | |
1215 | csk->tid, ntohs(rpl->len), cxgbi_skcb_rx_pdulen(lskb)); | |
1216 | ||
1217 | if (status & (1 << CPL_RX_DDP_STATUS_HCRC_SHIFT)) { | |
e27d6169 | 1218 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, hcrc bad 0x%lx.\n", |
1219 | csk, lskb, status, cxgbi_skcb_flags(lskb)); | |
7b36b6e0 | 1220 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_HCRC_ERR); |
1221 | } | |
1222 | if (status & (1 << CPL_RX_DDP_STATUS_DCRC_SHIFT)) { | |
e27d6169 | 1223 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, dcrc bad 0x%lx.\n", |
1224 | csk, lskb, status, cxgbi_skcb_flags(lskb)); | |
7b36b6e0 | 1225 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DCRC_ERR); |
1226 | } | |
1227 | if (status & (1 << CPL_RX_DDP_STATUS_PAD_SHIFT)) { | |
1228 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1229 | "csk 0x%p, lhdr 0x%p, status 0x%x, pad bad.\n", | |
1230 | csk, lskb, status); | |
1231 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_PAD_ERR); | |
1232 | } | |
1233 | if ((status & (1 << CPL_RX_DDP_STATUS_DDP_SHIFT)) && | |
1234 | !cxgbi_skcb_test_flag(lskb, SKCBF_RX_DATA)) { | |
1235 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1236 | "csk 0x%p, lhdr 0x%p, 0x%x, data ddp'ed.\n", | |
1237 | csk, lskb, status); | |
1238 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA_DDPD); | |
1239 | } | |
1240 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1241 | "csk 0x%p, lskb 0x%p, f 0x%lx.\n", | |
1242 | csk, lskb, cxgbi_skcb_flags(lskb)); | |
1243 | ||
e27d6169 | 1244 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_STATUS); |
7b36b6e0 | 1245 | cxgbi_conn_pdu_ready(csk); |
1246 | spin_unlock_bh(&csk->lock); | |
1247 | goto rel_skb; | |
1248 | ||
1249 | abort_conn: | |
1250 | send_abort_req(csk); | |
1251 | discard: | |
1252 | spin_unlock_bh(&csk->lock); | |
1253 | rel_skb: | |
1254 | __kfree_skb(skb); | |
1255 | } | |
1256 | ||
1257 | static void do_fw4_ack(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1258 | { | |
1259 | struct cxgbi_sock *csk; | |
1260 | struct cpl_fw4_ack *rpl = (struct cpl_fw4_ack *)skb->data; | |
1261 | unsigned int tid = GET_TID(rpl); | |
1262 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1263 | struct tid_info *t = lldi->tids; | |
1264 | ||
1265 | csk = lookup_tid(t, tid); | |
1266 | if (unlikely(!csk)) | |
1267 | pr_err("can't find connection for tid %u.\n", tid); | |
1268 | else { | |
1269 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1270 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1271 | csk, csk->state, csk->flags, csk->tid); | |
1272 | cxgbi_sock_rcv_wr_ack(csk, rpl->credits, ntohl(rpl->snd_una), | |
1273 | rpl->seq_vld); | |
1274 | } | |
1275 | __kfree_skb(skb); | |
1276 | } | |
1277 | ||
1278 | static void do_set_tcb_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1279 | { | |
1280 | struct cpl_set_tcb_rpl *rpl = (struct cpl_set_tcb_rpl *)skb->data; | |
1281 | unsigned int tid = GET_TID(rpl); | |
1282 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1283 | struct tid_info *t = lldi->tids; | |
1284 | struct cxgbi_sock *csk; | |
1285 | ||
1286 | csk = lookup_tid(t, tid); | |
1287 | if (!csk) | |
1288 | pr_err("can't find conn. for tid %u.\n", tid); | |
1289 | ||
1290 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1291 | "csk 0x%p,%u,%lx,%u, status 0x%x.\n", | |
1292 | csk, csk->state, csk->flags, csk->tid, rpl->status); | |
1293 | ||
1294 | if (rpl->status != CPL_ERR_NONE) | |
1295 | pr_err("csk 0x%p,%u, SET_TCB_RPL status %u.\n", | |
1296 | csk, tid, rpl->status); | |
1297 | ||
1298 | __kfree_skb(skb); | |
1299 | } | |
1300 | ||
1301 | static int alloc_cpls(struct cxgbi_sock *csk) | |
1302 | { | |
24d3f95a | 1303 | csk->cpl_close = alloc_wr(sizeof(struct cpl_close_con_req), |
1304 | 0, GFP_KERNEL); | |
7b36b6e0 | 1305 | if (!csk->cpl_close) |
1306 | return -ENOMEM; | |
1307 | ||
24d3f95a | 1308 | csk->cpl_abort_req = alloc_wr(sizeof(struct cpl_abort_req), |
1309 | 0, GFP_KERNEL); | |
7b36b6e0 | 1310 | if (!csk->cpl_abort_req) |
1311 | goto free_cpls; | |
1312 | ||
24d3f95a | 1313 | csk->cpl_abort_rpl = alloc_wr(sizeof(struct cpl_abort_rpl), |
1314 | 0, GFP_KERNEL); | |
7b36b6e0 | 1315 | if (!csk->cpl_abort_rpl) |
1316 | goto free_cpls; | |
1317 | return 0; | |
1318 | ||
1319 | free_cpls: | |
1320 | cxgbi_sock_free_cpl_skbs(csk); | |
1321 | return -ENOMEM; | |
1322 | } | |
1323 | ||
1324 | static inline void l2t_put(struct cxgbi_sock *csk) | |
1325 | { | |
1326 | if (csk->l2t) { | |
1327 | cxgb4_l2t_release(csk->l2t); | |
1328 | csk->l2t = NULL; | |
1329 | cxgbi_sock_put(csk); | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | static void release_offload_resources(struct cxgbi_sock *csk) | |
1334 | { | |
1335 | struct cxgb4_lld_info *lldi; | |
211a84e3 AB |
1336 | #if IS_ENABLED(CONFIG_IPV6) |
1337 | struct net_device *ndev = csk->cdev->ports[csk->port_id]; | |
1338 | #endif | |
7b36b6e0 | 1339 | |
1340 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1341 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1342 | csk, csk->state, csk->flags, csk->tid); | |
1343 | ||
1344 | cxgbi_sock_free_cpl_skbs(csk); | |
1345 | if (csk->wr_cred != csk->wr_max_cred) { | |
1346 | cxgbi_sock_purge_wr_queue(csk); | |
1347 | cxgbi_sock_reset_wr_list(csk); | |
1348 | } | |
1349 | ||
1350 | l2t_put(csk); | |
211a84e3 AB |
1351 | #if IS_ENABLED(CONFIG_IPV6) |
1352 | if (csk->csk_family == AF_INET6) | |
1353 | cxgb4_clip_release(ndev, | |
1354 | (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1355 | #endif | |
1356 | ||
7b36b6e0 | 1357 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) |
1358 | free_atid(csk); | |
1359 | else if (cxgbi_sock_flag(csk, CTPF_HAS_TID)) { | |
1360 | lldi = cxgbi_cdev_priv(csk->cdev); | |
1361 | cxgb4_remove_tid(lldi->tids, 0, csk->tid); | |
1362 | cxgbi_sock_clear_flag(csk, CTPF_HAS_TID); | |
1363 | cxgbi_sock_put(csk); | |
1364 | } | |
1365 | csk->dst = NULL; | |
1366 | csk->cdev = NULL; | |
1367 | } | |
1368 | ||
1369 | static int init_act_open(struct cxgbi_sock *csk) | |
1370 | { | |
1371 | struct cxgbi_device *cdev = csk->cdev; | |
1372 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1373 | struct net_device *ndev = cdev->ports[csk->port_id]; | |
7b36b6e0 | 1374 | struct sk_buff *skb = NULL; |
759a0cc5 AB |
1375 | struct neighbour *n = NULL; |
1376 | void *daddr; | |
7b36b6e0 | 1377 | unsigned int step; |
759a0cc5 AB |
1378 | unsigned int size, size6; |
1379 | int t4 = is_t4(lldi->adapter_type); | |
81daf10c KX |
1380 | unsigned int linkspeed; |
1381 | unsigned int rcv_winf, snd_winf; | |
7b36b6e0 | 1382 | |
1383 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1384 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1385 | csk, csk->state, csk->flags, csk->tid); | |
1386 | ||
759a0cc5 AB |
1387 | if (csk->csk_family == AF_INET) |
1388 | daddr = &csk->daddr.sin_addr.s_addr; | |
e81fbf6c AB |
1389 | #if IS_ENABLED(CONFIG_IPV6) |
1390 | else if (csk->csk_family == AF_INET6) | |
759a0cc5 | 1391 | daddr = &csk->daddr6.sin6_addr; |
e81fbf6c AB |
1392 | #endif |
1393 | else { | |
1394 | pr_err("address family 0x%x not supported\n", csk->csk_family); | |
1395 | goto rel_resource; | |
1396 | } | |
759a0cc5 AB |
1397 | |
1398 | n = dst_neigh_lookup(csk->dst, daddr); | |
1399 | ||
1400 | if (!n) { | |
1401 | pr_err("%s, can't get neighbour of csk->dst.\n", ndev->name); | |
1402 | goto rel_resource; | |
1403 | } | |
1404 | ||
7b36b6e0 | 1405 | csk->atid = cxgb4_alloc_atid(lldi->tids, csk); |
1406 | if (csk->atid < 0) { | |
1407 | pr_err("%s, NO atid available.\n", ndev->name); | |
1408 | return -EINVAL; | |
1409 | } | |
1410 | cxgbi_sock_set_flag(csk, CTPF_HAS_ATID); | |
1411 | cxgbi_sock_get(csk); | |
1412 | ||
51e059bd | 1413 | csk->l2t = cxgb4_l2t_get(lldi->l2t, n, ndev, 0); |
7b36b6e0 | 1414 | if (!csk->l2t) { |
1415 | pr_err("%s, cannot alloc l2t.\n", ndev->name); | |
211a84e3 | 1416 | goto rel_resource_without_clip; |
7b36b6e0 | 1417 | } |
1418 | cxgbi_sock_get(csk); | |
1419 | ||
211a84e3 AB |
1420 | #if IS_ENABLED(CONFIG_IPV6) |
1421 | if (csk->csk_family == AF_INET6) | |
1422 | cxgb4_clip_get(ndev, (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1423 | #endif | |
1424 | ||
759a0cc5 AB |
1425 | if (t4) { |
1426 | size = sizeof(struct cpl_act_open_req); | |
1427 | size6 = sizeof(struct cpl_act_open_req6); | |
1428 | } else { | |
1429 | size = sizeof(struct cpl_t5_act_open_req); | |
1430 | size6 = sizeof(struct cpl_t5_act_open_req6); | |
1431 | } | |
1432 | ||
1433 | if (csk->csk_family == AF_INET) | |
1434 | skb = alloc_wr(size, 0, GFP_NOIO); | |
f42bb57c | 1435 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
1436 | else |
1437 | skb = alloc_wr(size6, 0, GFP_NOIO); | |
f42bb57c | 1438 | #endif |
759a0cc5 | 1439 | |
7b36b6e0 | 1440 | if (!skb) |
1441 | goto rel_resource; | |
1442 | skb->sk = (struct sock *)csk; | |
1443 | t4_set_arp_err_handler(skb, csk, cxgbi_sock_act_open_req_arp_failure); | |
1444 | ||
1445 | if (!csk->mtu) | |
1446 | csk->mtu = dst_mtu(csk->dst); | |
1447 | cxgb4_best_mtu(lldi->mtus, csk->mtu, &csk->mss_idx); | |
1448 | csk->tx_chan = cxgb4_port_chan(ndev); | |
1449 | /* SMT two entries per row */ | |
1450 | csk->smac_idx = ((cxgb4_port_viid(ndev) & 0x7F)) << 1; | |
1451 | step = lldi->ntxq / lldi->nchan; | |
1452 | csk->txq_idx = cxgb4_port_idx(ndev) * step; | |
1453 | step = lldi->nrxq / lldi->nchan; | |
1454 | csk->rss_qid = lldi->rxq_ids[cxgb4_port_idx(ndev) * step]; | |
81daf10c KX |
1455 | linkspeed = ((struct port_info *)netdev_priv(ndev))->link_cfg.speed; |
1456 | csk->snd_win = cxgb4i_snd_win; | |
1457 | csk->rcv_win = cxgb4i_rcv_win; | |
1458 | if (cxgb4i_rcv_win <= 0) { | |
1459 | csk->rcv_win = CXGB4I_DEFAULT_10G_RCV_WIN; | |
1460 | rcv_winf = linkspeed / SPEED_10000; | |
1461 | if (rcv_winf) | |
1462 | csk->rcv_win *= rcv_winf; | |
1463 | } | |
1464 | if (cxgb4i_snd_win <= 0) { | |
1465 | csk->snd_win = CXGB4I_DEFAULT_10G_SND_WIN; | |
1466 | snd_winf = linkspeed / SPEED_10000; | |
1467 | if (snd_winf) | |
1468 | csk->snd_win *= snd_winf; | |
1469 | } | |
759a0cc5 AB |
1470 | csk->wr_cred = lldi->wr_cred - |
1471 | DIV_ROUND_UP(sizeof(struct cpl_abort_req), 16); | |
1472 | csk->wr_max_cred = csk->wr_cred; | |
7b36b6e0 | 1473 | csk->wr_una_cred = 0; |
1474 | cxgbi_sock_reset_wr_list(csk); | |
1475 | csk->err = 0; | |
7b36b6e0 | 1476 | |
759a0cc5 AB |
1477 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u,%u,%u, mtu %u,%u, smac %u.\n", |
1478 | (&csk->saddr), (&csk->daddr), csk, csk->state, | |
1479 | csk->flags, csk->tx_chan, csk->txq_idx, csk->rss_qid, | |
1480 | csk->mtu, csk->mss_idx, csk->smac_idx); | |
1481 | ||
1482 | /* must wait for either a act_open_rpl or act_open_establish */ | |
1483 | try_module_get(THIS_MODULE); | |
7b36b6e0 | 1484 | cxgbi_sock_set_state(csk, CTP_ACTIVE_OPEN); |
759a0cc5 AB |
1485 | if (csk->csk_family == AF_INET) |
1486 | send_act_open_req(csk, skb, csk->l2t); | |
f42bb57c | 1487 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
1488 | else |
1489 | send_act_open_req6(csk, skb, csk->l2t); | |
f42bb57c | 1490 | #endif |
c4737377 | 1491 | neigh_release(n); |
759a0cc5 | 1492 | |
7b36b6e0 | 1493 | return 0; |
1494 | ||
1495 | rel_resource: | |
211a84e3 AB |
1496 | #if IS_ENABLED(CONFIG_IPV6) |
1497 | if (csk->csk_family == AF_INET6) | |
1498 | cxgb4_clip_release(ndev, | |
1499 | (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1500 | #endif | |
1501 | rel_resource_without_clip: | |
c4737377 DM |
1502 | if (n) |
1503 | neigh_release(n); | |
7b36b6e0 | 1504 | if (skb) |
1505 | __kfree_skb(skb); | |
1506 | return -EINVAL; | |
1507 | } | |
1508 | ||
4665bdd5 | 1509 | static cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = { |
7b36b6e0 | 1510 | [CPL_ACT_ESTABLISH] = do_act_establish, |
1511 | [CPL_ACT_OPEN_RPL] = do_act_open_rpl, | |
1512 | [CPL_PEER_CLOSE] = do_peer_close, | |
1513 | [CPL_ABORT_REQ_RSS] = do_abort_req_rss, | |
1514 | [CPL_ABORT_RPL_RSS] = do_abort_rpl_rss, | |
1515 | [CPL_CLOSE_CON_RPL] = do_close_con_rpl, | |
1516 | [CPL_FW4_ACK] = do_fw4_ack, | |
1517 | [CPL_ISCSI_HDR] = do_rx_iscsi_hdr, | |
3bd3e8bf | 1518 | [CPL_ISCSI_DATA] = do_rx_iscsi_hdr, |
7b36b6e0 | 1519 | [CPL_SET_TCB_RPL] = do_set_tcb_rpl, |
1520 | [CPL_RX_DATA_DDP] = do_rx_data_ddp, | |
3bd3e8bf | 1521 | [CPL_RX_ISCSI_DDP] = do_rx_data_ddp, |
f7bcd2e1 | 1522 | [CPL_RX_DATA] = do_rx_data, |
7b36b6e0 | 1523 | }; |
1524 | ||
4665bdd5 | 1525 | static int cxgb4i_ofld_init(struct cxgbi_device *cdev) |
7b36b6e0 | 1526 | { |
1527 | int rc; | |
1528 | ||
1529 | if (cxgb4i_max_connect > CXGB4I_MAX_CONN) | |
1530 | cxgb4i_max_connect = CXGB4I_MAX_CONN; | |
1531 | ||
1532 | rc = cxgbi_device_portmap_create(cdev, cxgb4i_sport_base, | |
1533 | cxgb4i_max_connect); | |
1534 | if (rc < 0) | |
1535 | return rc; | |
1536 | ||
1537 | cdev->csk_release_offload_resources = release_offload_resources; | |
1538 | cdev->csk_push_tx_frames = push_tx_frames; | |
1539 | cdev->csk_send_abort_req = send_abort_req; | |
1540 | cdev->csk_send_close_req = send_close_req; | |
1541 | cdev->csk_send_rx_credits = send_rx_credits; | |
1542 | cdev->csk_alloc_cpls = alloc_cpls; | |
1543 | cdev->csk_init_act_open = init_act_open; | |
1544 | ||
1545 | pr_info("cdev 0x%p, offload up, added.\n", cdev); | |
1546 | return 0; | |
1547 | } | |
1548 | ||
71f7a00b VP |
1549 | static inline void |
1550 | ulp_mem_io_set_hdr(struct cxgbi_device *cdev, | |
1551 | struct ulp_mem_io *req, | |
1552 | unsigned int wr_len, unsigned int dlen, | |
1553 | unsigned int pm_addr, | |
1554 | int tid) | |
1555 | { | |
1556 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1557 | struct ulptx_idata *idata = (struct ulptx_idata *)(req + 1); | |
1558 | ||
1559 | INIT_ULPTX_WR(req, wr_len, 0, tid); | |
1560 | req->wr.wr_hi = htonl(FW_WR_OP_V(FW_ULPTX_WR) | | |
1561 | FW_WR_ATOMIC_V(0)); | |
1562 | req->cmd = htonl(ULPTX_CMD_V(ULP_TX_MEM_WRITE) | | |
1563 | ULP_MEMIO_ORDER_V(is_t4(lldi->adapter_type)) | | |
1564 | T5_ULP_MEMIO_IMM_V(!is_t4(lldi->adapter_type))); | |
1565 | req->dlen = htonl(ULP_MEMIO_DATA_LEN_V(dlen >> 5)); | |
1566 | req->lock_addr = htonl(ULP_MEMIO_ADDR_V(pm_addr >> 5)); | |
1567 | req->len16 = htonl(DIV_ROUND_UP(wr_len - sizeof(req->wr), 16)); | |
1568 | ||
1569 | idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM)); | |
1570 | idata->len = htonl(dlen); | |
1571 | } | |
1572 | ||
1573 | static struct sk_buff * | |
1574 | ddp_ppod_init_idata(struct cxgbi_device *cdev, | |
1575 | struct cxgbi_ppm *ppm, | |
1576 | unsigned int idx, unsigned int npods, | |
1577 | unsigned int tid) | |
1578 | { | |
1579 | unsigned int pm_addr = (idx << PPOD_SIZE_SHIFT) + ppm->llimit; | |
1580 | unsigned int dlen = npods << PPOD_SIZE_SHIFT; | |
1581 | unsigned int wr_len = roundup(sizeof(struct ulp_mem_io) + | |
1582 | sizeof(struct ulptx_idata) + dlen, 16); | |
1583 | struct sk_buff *skb = alloc_wr(wr_len, 0, GFP_ATOMIC); | |
1584 | ||
1585 | if (!skb) { | |
1586 | pr_err("%s: %s idx %u, npods %u, OOM.\n", | |
1587 | __func__, ppm->ndev->name, idx, npods); | |
1588 | return NULL; | |
1589 | } | |
1590 | ||
1591 | ulp_mem_io_set_hdr(cdev, (struct ulp_mem_io *)skb->head, wr_len, dlen, | |
1592 | pm_addr, tid); | |
1593 | ||
1594 | return skb; | |
1595 | } | |
1596 | ||
1597 | static int ddp_ppod_write_idata(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, | |
1598 | struct cxgbi_task_tag_info *ttinfo, | |
1599 | unsigned int idx, unsigned int npods, | |
1600 | struct scatterlist **sg_pp, | |
1601 | unsigned int *sg_off) | |
1602 | { | |
1603 | struct cxgbi_device *cdev = csk->cdev; | |
1604 | struct sk_buff *skb = ddp_ppod_init_idata(cdev, ppm, idx, npods, | |
1605 | csk->tid); | |
1606 | struct ulp_mem_io *req; | |
1607 | struct ulptx_idata *idata; | |
1608 | struct cxgbi_pagepod *ppod; | |
1609 | int i; | |
1610 | ||
1611 | if (!skb) | |
1612 | return -ENOMEM; | |
1613 | ||
1614 | req = (struct ulp_mem_io *)skb->head; | |
1615 | idata = (struct ulptx_idata *)(req + 1); | |
1616 | ppod = (struct cxgbi_pagepod *)(idata + 1); | |
1617 | ||
1618 | for (i = 0; i < npods; i++, ppod++) | |
1619 | cxgbi_ddp_set_one_ppod(ppod, ttinfo, sg_pp, sg_off); | |
1620 | ||
1621 | cxgbi_skcb_set_flag(skb, SKCBF_TX_MEM_WRITE); | |
1622 | cxgbi_skcb_set_flag(skb, SKCBF_TX_FLAG_COMPL); | |
1623 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); | |
1624 | ||
1625 | spin_lock_bh(&csk->lock); | |
1626 | cxgbi_sock_skb_entail(csk, skb); | |
1627 | spin_unlock_bh(&csk->lock); | |
1628 | ||
1629 | return 0; | |
1630 | } | |
1631 | ||
1632 | static int ddp_set_map(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, | |
1633 | struct cxgbi_task_tag_info *ttinfo) | |
1634 | { | |
1635 | unsigned int pidx = ttinfo->idx; | |
1636 | unsigned int npods = ttinfo->npods; | |
1637 | unsigned int i, cnt; | |
1638 | int err = 0; | |
1639 | struct scatterlist *sg = ttinfo->sgl; | |
1640 | unsigned int offset = 0; | |
1641 | ||
1642 | ttinfo->cid = csk->port_id; | |
1643 | ||
1644 | for (i = 0; i < npods; i += cnt, pidx += cnt) { | |
1645 | cnt = npods - i; | |
1646 | ||
1647 | if (cnt > ULPMEM_IDATA_MAX_NPPODS) | |
1648 | cnt = ULPMEM_IDATA_MAX_NPPODS; | |
1649 | err = ddp_ppod_write_idata(ppm, csk, ttinfo, pidx, cnt, | |
1650 | &sg, &offset); | |
1651 | if (err < 0) | |
1652 | break; | |
1653 | } | |
1654 | ||
1655 | return err; | |
1656 | } | |
1657 | ||
7b36b6e0 | 1658 | static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, |
1659 | int pg_idx, bool reply) | |
1660 | { | |
1661 | struct sk_buff *skb; | |
1662 | struct cpl_set_tcb_field *req; | |
7b36b6e0 | 1663 | |
e27d6169 | 1664 | if (!pg_idx || pg_idx >= DDP_PGIDX_MAX) |
7b36b6e0 | 1665 | return 0; |
1666 | ||
24d3f95a | 1667 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
7b36b6e0 | 1668 | if (!skb) |
1669 | return -ENOMEM; | |
1670 | ||
e27d6169 | 1671 | /* set up ulp page size */ |
7b36b6e0 | 1672 | req = (struct cpl_set_tcb_field *)skb->head; |
1673 | INIT_TP_WR(req, csk->tid); | |
1674 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); | |
bdc590b9 | 1675 | req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); |
e27d6169 | 1676 | req->word_cookie = htons(0); |
1677 | req->mask = cpu_to_be64(0x3 << 8); | |
1678 | req->val = cpu_to_be64(pg_idx << 8); | |
7b36b6e0 | 1679 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
1680 | ||
1681 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1682 | "csk 0x%p, tid 0x%x, pg_idx %u.\n", csk, csk->tid, pg_idx); | |
1683 | ||
1684 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
1685 | return 0; | |
1686 | } | |
1687 | ||
1688 | static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, | |
1689 | int hcrc, int dcrc, int reply) | |
1690 | { | |
1691 | struct sk_buff *skb; | |
1692 | struct cpl_set_tcb_field *req; | |
7b36b6e0 | 1693 | |
e27d6169 | 1694 | if (!hcrc && !dcrc) |
1695 | return 0; | |
7b36b6e0 | 1696 | |
24d3f95a | 1697 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
7b36b6e0 | 1698 | if (!skb) |
1699 | return -ENOMEM; | |
1700 | ||
1701 | csk->hcrc_len = (hcrc ? 4 : 0); | |
1702 | csk->dcrc_len = (dcrc ? 4 : 0); | |
e27d6169 | 1703 | /* set up ulp submode */ |
7b36b6e0 | 1704 | req = (struct cpl_set_tcb_field *)skb->head; |
1705 | INIT_TP_WR(req, tid); | |
1706 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); | |
bdc590b9 | 1707 | req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); |
e27d6169 | 1708 | req->word_cookie = htons(0); |
1709 | req->mask = cpu_to_be64(0x3 << 4); | |
1710 | req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) | | |
1711 | (dcrc ? ULP_CRC_DATA : 0)) << 4); | |
7b36b6e0 | 1712 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
1713 | ||
1714 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1715 | "csk 0x%p, tid 0x%x, crc %d,%d.\n", csk, csk->tid, hcrc, dcrc); | |
1716 | ||
1717 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
1718 | return 0; | |
1719 | } | |
1720 | ||
71f7a00b VP |
1721 | static struct cxgbi_ppm *cdev2ppm(struct cxgbi_device *cdev) |
1722 | { | |
1723 | return (struct cxgbi_ppm *)(*((struct cxgb4_lld_info *) | |
1724 | (cxgbi_cdev_priv(cdev)))->iscsi_ppm); | |
1725 | } | |
1726 | ||
7b36b6e0 | 1727 | static int cxgb4i_ddp_init(struct cxgbi_device *cdev) |
1728 | { | |
71f7a00b VP |
1729 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
1730 | struct net_device *ndev = cdev->ports[0]; | |
1731 | struct cxgbi_tag_format tformat; | |
1732 | unsigned int ppmax; | |
1733 | int i; | |
1734 | ||
1735 | if (!lldi->vr->iscsi.size) { | |
1736 | pr_warn("%s, iscsi NOT enabled, check config!\n", ndev->name); | |
1737 | return -EACCES; | |
1738 | } | |
1739 | ||
1740 | cdev->flags |= CXGBI_FLAG_USE_PPOD_OFLDQ; | |
1741 | ppmax = lldi->vr->iscsi.size >> PPOD_SIZE_SHIFT; | |
1742 | ||
1743 | memset(&tformat, 0, sizeof(struct cxgbi_tag_format)); | |
1744 | for (i = 0; i < 4; i++) | |
1745 | tformat.pgsz_order[i] = (lldi->iscsi_pgsz_order >> (i << 3)) | |
1746 | & 0xF; | |
1747 | cxgbi_tagmask_check(lldi->iscsi_tagmask, &tformat); | |
1748 | ||
1749 | cxgbi_ddp_ppm_setup(lldi->iscsi_ppm, cdev, &tformat, ppmax, | |
1750 | lldi->iscsi_llimit, lldi->vr->iscsi.start, 2); | |
1751 | ||
7b36b6e0 | 1752 | cdev->csk_ddp_setup_digest = ddp_setup_conn_digest; |
1753 | cdev->csk_ddp_setup_pgidx = ddp_setup_conn_pgidx; | |
71f7a00b VP |
1754 | cdev->csk_ddp_set_map = ddp_set_map; |
1755 | cdev->tx_max_size = min_t(unsigned int, ULP2_MAX_PDU_PAYLOAD, | |
1756 | lldi->iscsi_iolen - ISCSI_PDU_NONPAYLOAD_LEN); | |
1757 | cdev->rx_max_size = min_t(unsigned int, ULP2_MAX_PDU_PAYLOAD, | |
1758 | lldi->iscsi_iolen - ISCSI_PDU_NONPAYLOAD_LEN); | |
1759 | cdev->cdev2ppm = cdev2ppm; | |
1760 | ||
7b36b6e0 | 1761 | return 0; |
1762 | } | |
1763 | ||
1764 | static void *t4_uld_add(const struct cxgb4_lld_info *lldi) | |
1765 | { | |
1766 | struct cxgbi_device *cdev; | |
1767 | struct port_info *pi; | |
1768 | int i, rc; | |
1769 | ||
1770 | cdev = cxgbi_device_register(sizeof(*lldi), lldi->nports); | |
1771 | if (!cdev) { | |
1772 | pr_info("t4 device 0x%p, register failed.\n", lldi); | |
1773 | return NULL; | |
1774 | } | |
1775 | pr_info("0x%p,0x%x, ports %u,%s, chan %u, q %u,%u, wr %u.\n", | |
1776 | cdev, lldi->adapter_type, lldi->nports, | |
1777 | lldi->ports[0]->name, lldi->nchan, lldi->ntxq, | |
1778 | lldi->nrxq, lldi->wr_cred); | |
1779 | for (i = 0; i < lldi->nrxq; i++) | |
1780 | log_debug(1 << CXGBI_DBG_DEV, | |
1781 | "t4 0x%p, rxq id #%d: %u.\n", | |
1782 | cdev, i, lldi->rxq_ids[i]); | |
1783 | ||
1784 | memcpy(cxgbi_cdev_priv(cdev), lldi, sizeof(*lldi)); | |
1785 | cdev->flags = CXGBI_FLAG_DEV_T4; | |
1786 | cdev->pdev = lldi->pdev; | |
1787 | cdev->ports = lldi->ports; | |
1788 | cdev->nports = lldi->nports; | |
1789 | cdev->mtus = lldi->mtus; | |
1790 | cdev->nmtus = NMTUS; | |
7b36b6e0 | 1791 | cdev->rx_credit_thres = cxgb4i_rx_credit_thres; |
1792 | cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN; | |
1793 | cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr); | |
1794 | cdev->itp = &cxgb4i_iscsi_transport; | |
1795 | ||
d7990b0c AB |
1796 | cdev->pfvf = FW_VIID_PFN_G(cxgb4_port_viid(lldi->ports[0])) |
1797 | << FW_VIID_PFN_S; | |
e27d6169 | 1798 | pr_info("cdev 0x%p,%s, pfvf %u.\n", |
1799 | cdev, lldi->ports[0]->name, cdev->pfvf); | |
1800 | ||
7b36b6e0 | 1801 | rc = cxgb4i_ddp_init(cdev); |
1802 | if (rc) { | |
1803 | pr_info("t4 0x%p ddp init failed.\n", cdev); | |
1804 | goto err_out; | |
1805 | } | |
1806 | rc = cxgb4i_ofld_init(cdev); | |
1807 | if (rc) { | |
1808 | pr_info("t4 0x%p ofld init failed.\n", cdev); | |
1809 | goto err_out; | |
1810 | } | |
1811 | ||
1812 | rc = cxgbi_hbas_add(cdev, CXGB4I_MAX_LUN, CXGBI_MAX_CONN, | |
1813 | &cxgb4i_host_template, cxgb4i_stt); | |
1814 | if (rc) | |
1815 | goto err_out; | |
1816 | ||
1817 | for (i = 0; i < cdev->nports; i++) { | |
1818 | pi = netdev_priv(lldi->ports[i]); | |
1819 | cdev->hbas[i]->port_id = pi->port_id; | |
1820 | } | |
1821 | return cdev; | |
1822 | ||
1823 | err_out: | |
1824 | cxgbi_device_unregister(cdev); | |
1825 | return ERR_PTR(-ENOMEM); | |
1826 | } | |
1827 | ||
1828 | #define RX_PULL_LEN 128 | |
1829 | static int t4_uld_rx_handler(void *handle, const __be64 *rsp, | |
1830 | const struct pkt_gl *pgl) | |
1831 | { | |
1832 | const struct cpl_act_establish *rpl; | |
1833 | struct sk_buff *skb; | |
1834 | unsigned int opc; | |
1835 | struct cxgbi_device *cdev = handle; | |
1836 | ||
1837 | if (pgl == NULL) { | |
1838 | unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; | |
1839 | ||
24d3f95a | 1840 | skb = alloc_wr(len, 0, GFP_ATOMIC); |
7b36b6e0 | 1841 | if (!skb) |
1842 | goto nomem; | |
1843 | skb_copy_to_linear_data(skb, &rsp[1], len); | |
1844 | } else { | |
1845 | if (unlikely(*(u8 *)rsp != *(u8 *)pgl->va)) { | |
1846 | pr_info("? FL 0x%p,RSS%#llx,FL %#llx,len %u.\n", | |
1847 | pgl->va, be64_to_cpu(*rsp), | |
1848 | be64_to_cpu(*(u64 *)pgl->va), | |
1849 | pgl->tot_len); | |
1850 | return 0; | |
1851 | } | |
1852 | skb = cxgb4_pktgl_to_skb(pgl, RX_PULL_LEN, RX_PULL_LEN); | |
1853 | if (unlikely(!skb)) | |
1854 | goto nomem; | |
1855 | } | |
1856 | ||
1857 | rpl = (struct cpl_act_establish *)skb->data; | |
1858 | opc = rpl->ot.opcode; | |
1859 | log_debug(1 << CXGBI_DBG_TOE, | |
1860 | "cdev %p, opcode 0x%x(0x%x,0x%x), skb %p.\n", | |
1861 | cdev, opc, rpl->ot.opcode_tid, ntohl(rpl->ot.opcode_tid), skb); | |
1862 | if (cxgb4i_cplhandlers[opc]) | |
1863 | cxgb4i_cplhandlers[opc](cdev, skb); | |
1864 | else { | |
1865 | pr_err("No handler for opcode 0x%x.\n", opc); | |
1866 | __kfree_skb(skb); | |
1867 | } | |
1868 | return 0; | |
1869 | nomem: | |
1870 | log_debug(1 << CXGBI_DBG_TOE, "OOM bailing out.\n"); | |
1871 | return 1; | |
1872 | } | |
1873 | ||
1874 | static int t4_uld_state_change(void *handle, enum cxgb4_state state) | |
1875 | { | |
1876 | struct cxgbi_device *cdev = handle; | |
1877 | ||
1878 | switch (state) { | |
1879 | case CXGB4_STATE_UP: | |
1880 | pr_info("cdev 0x%p, UP.\n", cdev); | |
7b36b6e0 | 1881 | break; |
1882 | case CXGB4_STATE_START_RECOVERY: | |
1883 | pr_info("cdev 0x%p, RECOVERY.\n", cdev); | |
1884 | /* close all connections */ | |
1885 | break; | |
1886 | case CXGB4_STATE_DOWN: | |
1887 | pr_info("cdev 0x%p, DOWN.\n", cdev); | |
1888 | break; | |
1889 | case CXGB4_STATE_DETACH: | |
1890 | pr_info("cdev 0x%p, DETACH.\n", cdev); | |
c3b331a3 | 1891 | cxgbi_device_unregister(cdev); |
7b36b6e0 | 1892 | break; |
1893 | default: | |
1894 | pr_info("cdev 0x%p, unknown state %d.\n", cdev, state); | |
1895 | break; | |
1896 | } | |
1897 | return 0; | |
1898 | } | |
1899 | ||
1900 | static int __init cxgb4i_init_module(void) | |
1901 | { | |
1902 | int rc; | |
1903 | ||
1904 | printk(KERN_INFO "%s", version); | |
1905 | ||
1906 | rc = cxgbi_iscsi_init(&cxgb4i_iscsi_transport, &cxgb4i_stt); | |
1907 | if (rc < 0) | |
1908 | return rc; | |
1909 | cxgb4_register_uld(CXGB4_ULD_ISCSI, &cxgb4i_uld_info); | |
759a0cc5 | 1910 | |
7b36b6e0 | 1911 | return 0; |
1912 | } | |
1913 | ||
1914 | static void __exit cxgb4i_exit_module(void) | |
1915 | { | |
1916 | cxgb4_unregister_uld(CXGB4_ULD_ISCSI); | |
1917 | cxgbi_device_unregister_all(CXGBI_FLAG_DEV_T4); | |
1918 | cxgbi_iscsi_cleanup(&cxgb4i_iscsi_transport, &cxgb4i_stt); | |
1919 | } | |
1920 | ||
1921 | module_init(cxgb4i_init_module); | |
1922 | module_exit(cxgb4i_exit_module); |