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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" | |
cb22bdc8 | 39 | #define DRV_MODULE_DESC "Chelsio T4-T6 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 | 87 | .nrxq = MAX_ULD_QSETS, |
ab677ff4 | 88 | .ntxq = MAX_ULD_QSETS, |
0fbc81b3 HS |
89 | .rxq_size = 1024, |
90 | .lro = false, | |
7b36b6e0 | 91 | .add = t4_uld_add, |
92 | .rx_handler = t4_uld_rx_handler, | |
93 | .state_change = t4_uld_state_change, | |
94 | }; | |
95 | ||
96 | static struct scsi_host_template cxgb4i_host_template = { | |
97 | .module = THIS_MODULE, | |
98 | .name = DRV_MODULE_NAME, | |
99 | .proc_name = DRV_MODULE_NAME, | |
100 | .can_queue = CXGB4I_SCSI_HOST_QDEPTH, | |
101 | .queuecommand = iscsi_queuecommand, | |
db5ed4df | 102 | .change_queue_depth = scsi_change_queue_depth, |
7b36b6e0 | 103 | .sg_tablesize = SG_ALL, |
104 | .max_sectors = 0xFFFF, | |
105 | .cmd_per_lun = ISCSI_DEF_CMD_PER_LUN, | |
b6a05c82 | 106 | .eh_timed_out = iscsi_eh_cmd_timed_out, |
7b36b6e0 | 107 | .eh_abort_handler = iscsi_eh_abort, |
108 | .eh_device_reset_handler = iscsi_eh_device_reset, | |
109 | .eh_target_reset_handler = iscsi_eh_recover_target, | |
110 | .target_alloc = iscsi_target_alloc, | |
111 | .use_clustering = DISABLE_CLUSTERING, | |
112 | .this_id = -1, | |
c40ecc12 | 113 | .track_queue_depth = 1, |
7b36b6e0 | 114 | }; |
115 | ||
116 | static struct iscsi_transport cxgb4i_iscsi_transport = { | |
117 | .owner = THIS_MODULE, | |
118 | .name = DRV_MODULE_NAME, | |
119 | .caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST | | |
120 | CAP_DATADGST | CAP_DIGEST_OFFLOAD | | |
fdafd4df | 121 | CAP_PADDING_OFFLOAD | CAP_TEXT_NEGO, |
3128c6c7 | 122 | .attr_is_visible = cxgbi_attr_is_visible, |
7b36b6e0 | 123 | .get_host_param = cxgbi_get_host_param, |
124 | .set_host_param = cxgbi_set_host_param, | |
125 | /* session management */ | |
126 | .create_session = cxgbi_create_session, | |
127 | .destroy_session = cxgbi_destroy_session, | |
128 | .get_session_param = iscsi_session_get_param, | |
129 | /* connection management */ | |
130 | .create_conn = cxgbi_create_conn, | |
131 | .bind_conn = cxgbi_bind_conn, | |
132 | .destroy_conn = iscsi_tcp_conn_teardown, | |
133 | .start_conn = iscsi_conn_start, | |
134 | .stop_conn = iscsi_conn_stop, | |
c71b9b66 | 135 | .get_conn_param = iscsi_conn_get_param, |
7b36b6e0 | 136 | .set_param = cxgbi_set_conn_param, |
137 | .get_stats = cxgbi_get_conn_stats, | |
138 | /* pdu xmit req from user space */ | |
139 | .send_pdu = iscsi_conn_send_pdu, | |
140 | /* task */ | |
141 | .init_task = iscsi_tcp_task_init, | |
142 | .xmit_task = iscsi_tcp_task_xmit, | |
143 | .cleanup_task = cxgbi_cleanup_task, | |
144 | /* pdu */ | |
145 | .alloc_pdu = cxgbi_conn_alloc_pdu, | |
146 | .init_pdu = cxgbi_conn_init_pdu, | |
147 | .xmit_pdu = cxgbi_conn_xmit_pdu, | |
148 | .parse_pdu_itt = cxgbi_parse_pdu_itt, | |
149 | /* TCP connect/disconnect */ | |
c71b9b66 | 150 | .get_ep_param = cxgbi_get_ep_param, |
7b36b6e0 | 151 | .ep_connect = cxgbi_ep_connect, |
152 | .ep_poll = cxgbi_ep_poll, | |
153 | .ep_disconnect = cxgbi_ep_disconnect, | |
154 | /* Error recovery timeout call */ | |
155 | .session_recovery_timedout = iscsi_session_recovery_timedout, | |
156 | }; | |
157 | ||
158 | static struct scsi_transport_template *cxgb4i_stt; | |
159 | ||
160 | /* | |
161 | * CPL (Chelsio Protocol Language) defines a message passing interface between | |
162 | * the host driver and Chelsio asic. | |
163 | * The section below implments CPLs that related to iscsi tcp connection | |
164 | * open/close/abort and data send/receive. | |
165 | */ | |
759a0cc5 | 166 | |
7b36b6e0 | 167 | #define RCV_BUFSIZ_MASK 0x3FFU |
d3074cce | 168 | #define MAX_IMM_TX_PKT_LEN 256 |
7b36b6e0 | 169 | |
7b36b6e0 | 170 | static int push_tx_frames(struct cxgbi_sock *, int); |
171 | ||
172 | /* | |
173 | * is_ofld_imm - check whether a packet can be sent as immediate data | |
174 | * @skb: the packet | |
175 | * | |
176 | * Returns true if a packet can be sent as an offload WR with immediate | |
177 | * data. We currently use the same limit as for Ethernet packets. | |
178 | */ | |
84944d8c | 179 | static inline bool is_ofld_imm(const struct sk_buff *skb) |
7b36b6e0 | 180 | { |
84944d8c KX |
181 | int len = skb->len; |
182 | ||
183 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) | |
184 | len += sizeof(struct fw_ofld_tx_data_wr); | |
185 | ||
186 | return len <= MAX_IMM_TX_PKT_LEN; | |
7b36b6e0 | 187 | } |
188 | ||
189 | static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb, | |
190 | struct l2t_entry *e) | |
191 | { | |
3bd3e8bf | 192 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
7b36b6e0 | 193 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); |
194 | unsigned long long opt0; | |
195 | unsigned int opt2; | |
196 | unsigned int qid_atid = ((unsigned int)csk->atid) | | |
197 | (((unsigned int)csk->rss_qid) << 14); | |
198 | ||
d7990b0c AB |
199 | opt0 = KEEP_ALIVE_F | |
200 | WND_SCALE_V(wscale) | | |
201 | MSS_IDX_V(csk->mss_idx) | | |
202 | L2T_IDX_V(((struct l2t_entry *)csk->l2t)->idx) | | |
203 | TX_CHAN_V(csk->tx_chan) | | |
204 | SMAC_SEL_V(csk->smac_idx) | | |
205 | ULP_MODE_V(ULP_MODE_ISCSI) | | |
81daf10c | 206 | RCV_BUFSIZ_V(csk->rcv_win >> 10); |
1eb88a5d | 207 | |
d7990b0c AB |
208 | opt2 = RX_CHANNEL_V(0) | |
209 | RSS_QUEUE_VALID_F | | |
d7990b0c | 210 | RSS_QUEUE_V(csk->rss_qid); |
7b36b6e0 | 211 | |
3bd3e8bf KX |
212 | if (is_t4(lldi->adapter_type)) { |
213 | struct cpl_act_open_req *req = | |
214 | (struct cpl_act_open_req *)skb->head; | |
215 | ||
3bd3e8bf KX |
216 | INIT_TP_WR(req, 0); |
217 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
7b36b6e0 | 218 | qid_atid)); |
3bd3e8bf KX |
219 | req->local_port = csk->saddr.sin_port; |
220 | req->peer_port = csk->daddr.sin_port; | |
221 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
222 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
223 | req->opt0 = cpu_to_be64(opt0); | |
ac0245ff KX |
224 | req->params = cpu_to_be32(cxgb4_select_ntuple( |
225 | csk->cdev->ports[csk->port_id], | |
226 | csk->l2t)); | |
d7990b0c | 227 | opt2 |= RX_FC_VALID_F; |
3bd3e8bf | 228 | req->opt2 = cpu_to_be32(opt2); |
7b36b6e0 | 229 | |
3bd3e8bf KX |
230 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, |
231 | "csk t4 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
232 | csk, &req->local_ip, ntohs(req->local_port), | |
233 | &req->peer_ip, ntohs(req->peer_port), | |
234 | csk->atid, csk->rss_qid); | |
586be7cb | 235 | } else if (is_t5(lldi->adapter_type)) { |
3bd3e8bf KX |
236 | struct cpl_t5_act_open_req *req = |
237 | (struct cpl_t5_act_open_req *)skb->head; | |
1eb88a5d | 238 | u32 isn = (prandom_u32() & ~7UL) - 1; |
3bd3e8bf | 239 | |
3bd3e8bf KX |
240 | INIT_TP_WR(req, 0); |
241 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
242 | qid_atid)); | |
243 | req->local_port = csk->saddr.sin_port; | |
244 | req->peer_port = csk->daddr.sin_port; | |
245 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
246 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
247 | req->opt0 = cpu_to_be64(opt0); | |
d7990b0c | 248 | req->params = cpu_to_be64(FILTER_TUPLE_V( |
ac0245ff KX |
249 | cxgb4_select_ntuple( |
250 | csk->cdev->ports[csk->port_id], | |
251 | csk->l2t))); | |
1eb88a5d KX |
252 | req->rsvd = cpu_to_be32(isn); |
253 | opt2 |= T5_ISS_VALID; | |
254 | opt2 |= T5_OPT_2_VALID_F; | |
255 | ||
3bd3e8bf KX |
256 | req->opt2 = cpu_to_be32(opt2); |
257 | ||
258 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
259 | "csk t5 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
260 | csk, &req->local_ip, ntohs(req->local_port), | |
261 | &req->peer_ip, ntohs(req->peer_port), | |
262 | csk->atid, csk->rss_qid); | |
586be7cb VP |
263 | } else { |
264 | struct cpl_t6_act_open_req *req = | |
265 | (struct cpl_t6_act_open_req *)skb->head; | |
266 | u32 isn = (prandom_u32() & ~7UL) - 1; | |
267 | ||
268 | INIT_TP_WR(req, 0); | |
269 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
270 | qid_atid)); | |
271 | req->local_port = csk->saddr.sin_port; | |
272 | req->peer_port = csk->daddr.sin_port; | |
273 | req->local_ip = csk->saddr.sin_addr.s_addr; | |
274 | req->peer_ip = csk->daddr.sin_addr.s_addr; | |
275 | req->opt0 = cpu_to_be64(opt0); | |
276 | req->params = cpu_to_be64(FILTER_TUPLE_V( | |
277 | cxgb4_select_ntuple( | |
278 | csk->cdev->ports[csk->port_id], | |
279 | csk->l2t))); | |
280 | req->rsvd = cpu_to_be32(isn); | |
281 | ||
282 | opt2 |= T5_ISS_VALID; | |
283 | opt2 |= RX_FC_DISABLE_F; | |
284 | opt2 |= T5_OPT_2_VALID_F; | |
285 | ||
286 | req->opt2 = cpu_to_be32(opt2); | |
287 | req->rsvd2 = cpu_to_be32(0); | |
288 | req->opt3 = cpu_to_be32(0); | |
289 | ||
290 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
291 | "csk t6 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", | |
292 | csk, &req->local_ip, ntohs(req->local_port), | |
293 | &req->peer_ip, ntohs(req->peer_port), | |
294 | csk->atid, csk->rss_qid); | |
3bd3e8bf KX |
295 | } |
296 | ||
297 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); | |
759a0cc5 AB |
298 | |
299 | pr_info_ipaddr("t%d csk 0x%p,%u,0x%lx,%u, rss_qid %u.\n", | |
586be7cb VP |
300 | (&csk->saddr), (&csk->daddr), |
301 | CHELSIO_CHIP_VERSION(lldi->adapter_type), csk, | |
759a0cc5 AB |
302 | csk->state, csk->flags, csk->atid, csk->rss_qid); |
303 | ||
304 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
305 | } | |
306 | ||
f42bb57c | 307 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
308 | static void send_act_open_req6(struct cxgbi_sock *csk, struct sk_buff *skb, |
309 | struct l2t_entry *e) | |
310 | { | |
311 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); | |
759a0cc5 AB |
312 | int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); |
313 | unsigned long long opt0; | |
314 | unsigned int opt2; | |
315 | unsigned int qid_atid = ((unsigned int)csk->atid) | | |
316 | (((unsigned int)csk->rss_qid) << 14); | |
317 | ||
d7990b0c AB |
318 | opt0 = KEEP_ALIVE_F | |
319 | WND_SCALE_V(wscale) | | |
320 | MSS_IDX_V(csk->mss_idx) | | |
321 | L2T_IDX_V(((struct l2t_entry *)csk->l2t)->idx) | | |
322 | TX_CHAN_V(csk->tx_chan) | | |
323 | SMAC_SEL_V(csk->smac_idx) | | |
324 | ULP_MODE_V(ULP_MODE_ISCSI) | | |
81daf10c | 325 | RCV_BUFSIZ_V(csk->rcv_win >> 10); |
759a0cc5 | 326 | |
d7990b0c AB |
327 | opt2 = RX_CHANNEL_V(0) | |
328 | RSS_QUEUE_VALID_F | | |
d7990b0c | 329 | RSS_QUEUE_V(csk->rss_qid); |
759a0cc5 | 330 | |
586be7cb | 331 | if (is_t4(lldi->adapter_type)) { |
759a0cc5 AB |
332 | struct cpl_act_open_req6 *req = |
333 | (struct cpl_act_open_req6 *)skb->head; | |
334 | ||
335 | INIT_TP_WR(req, 0); | |
336 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
337 | qid_atid)); | |
338 | req->local_port = csk->saddr6.sin6_port; | |
339 | req->peer_port = csk->daddr6.sin6_port; | |
340 | ||
341 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
342 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
343 | 8); | |
344 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
345 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
346 | 8); | |
347 | ||
348 | req->opt0 = cpu_to_be64(opt0); | |
349 | ||
d7990b0c | 350 | opt2 |= RX_FC_VALID_F; |
759a0cc5 AB |
351 | req->opt2 = cpu_to_be32(opt2); |
352 | ||
353 | req->params = cpu_to_be32(cxgb4_select_ntuple( | |
354 | csk->cdev->ports[csk->port_id], | |
355 | csk->l2t)); | |
586be7cb | 356 | } else if (is_t5(lldi->adapter_type)) { |
759a0cc5 AB |
357 | struct cpl_t5_act_open_req6 *req = |
358 | (struct cpl_t5_act_open_req6 *)skb->head; | |
359 | ||
360 | INIT_TP_WR(req, 0); | |
361 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
362 | qid_atid)); | |
363 | req->local_port = csk->saddr6.sin6_port; | |
364 | req->peer_port = csk->daddr6.sin6_port; | |
365 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
366 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
367 | 8); | |
368 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
369 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
370 | 8); | |
371 | req->opt0 = cpu_to_be64(opt0); | |
372 | ||
d7990b0c | 373 | opt2 |= T5_OPT_2_VALID_F; |
759a0cc5 AB |
374 | req->opt2 = cpu_to_be32(opt2); |
375 | ||
d7990b0c | 376 | req->params = cpu_to_be64(FILTER_TUPLE_V(cxgb4_select_ntuple( |
759a0cc5 AB |
377 | csk->cdev->ports[csk->port_id], |
378 | csk->l2t))); | |
586be7cb VP |
379 | } else { |
380 | struct cpl_t6_act_open_req6 *req = | |
381 | (struct cpl_t6_act_open_req6 *)skb->head; | |
382 | ||
383 | INIT_TP_WR(req, 0); | |
384 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
385 | qid_atid)); | |
386 | req->local_port = csk->saddr6.sin6_port; | |
387 | req->peer_port = csk->daddr6.sin6_port; | |
388 | req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); | |
389 | req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + | |
390 | 8); | |
391 | req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); | |
392 | req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + | |
393 | 8); | |
394 | req->opt0 = cpu_to_be64(opt0); | |
395 | ||
396 | opt2 |= RX_FC_DISABLE_F; | |
397 | opt2 |= T5_OPT_2_VALID_F; | |
398 | ||
399 | req->opt2 = cpu_to_be32(opt2); | |
400 | ||
401 | req->params = cpu_to_be64(FILTER_TUPLE_V(cxgb4_select_ntuple( | |
402 | csk->cdev->ports[csk->port_id], | |
403 | csk->l2t))); | |
404 | ||
405 | req->rsvd2 = cpu_to_be32(0); | |
406 | req->opt3 = cpu_to_be32(0); | |
759a0cc5 AB |
407 | } |
408 | ||
409 | set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); | |
410 | ||
411 | pr_info("t%d csk 0x%p,%u,0x%lx,%u, [%pI6]:%u-[%pI6]:%u, rss_qid %u.\n", | |
586be7cb VP |
412 | CHELSIO_CHIP_VERSION(lldi->adapter_type), csk, csk->state, |
413 | csk->flags, csk->atid, | |
759a0cc5 AB |
414 | &csk->saddr6.sin6_addr, ntohs(csk->saddr.sin_port), |
415 | &csk->daddr6.sin6_addr, ntohs(csk->daddr.sin_port), | |
416 | csk->rss_qid); | |
417 | ||
7b36b6e0 | 418 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); |
419 | } | |
f42bb57c | 420 | #endif |
7b36b6e0 | 421 | |
422 | static void send_close_req(struct cxgbi_sock *csk) | |
423 | { | |
424 | struct sk_buff *skb = csk->cpl_close; | |
425 | struct cpl_close_con_req *req = (struct cpl_close_con_req *)skb->head; | |
426 | unsigned int tid = csk->tid; | |
427 | ||
428 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
429 | "csk 0x%p,%u,0x%lx, tid %u.\n", | |
430 | csk, csk->state, csk->flags, csk->tid); | |
431 | csk->cpl_close = NULL; | |
432 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); | |
433 | INIT_TP_WR(req, tid); | |
434 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid)); | |
435 | req->rsvd = 0; | |
436 | ||
437 | cxgbi_sock_skb_entail(csk, skb); | |
438 | if (csk->state >= CTP_ESTABLISHED) | |
439 | push_tx_frames(csk, 1); | |
440 | } | |
441 | ||
442 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
443 | { | |
444 | struct cxgbi_sock *csk = (struct cxgbi_sock *)handle; | |
445 | struct cpl_abort_req *req; | |
446 | ||
447 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
448 | "csk 0x%p,%u,0x%lx, tid %u, abort.\n", | |
449 | csk, csk->state, csk->flags, csk->tid); | |
450 | req = (struct cpl_abort_req *)skb->data; | |
451 | req->cmd = CPL_ABORT_NO_RST; | |
452 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
453 | } | |
454 | ||
455 | static void send_abort_req(struct cxgbi_sock *csk) | |
456 | { | |
457 | struct cpl_abort_req *req; | |
458 | struct sk_buff *skb = csk->cpl_abort_req; | |
459 | ||
460 | if (unlikely(csk->state == CTP_ABORTING) || !skb || !csk->cdev) | |
461 | return; | |
64bfead8 KX |
462 | |
463 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
464 | send_tx_flowc_wr(csk); | |
465 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
466 | } | |
467 | ||
7b36b6e0 | 468 | cxgbi_sock_set_state(csk, CTP_ABORTING); |
469 | cxgbi_sock_set_flag(csk, CTPF_ABORT_RPL_PENDING); | |
470 | cxgbi_sock_purge_write_queue(csk); | |
471 | ||
472 | csk->cpl_abort_req = NULL; | |
473 | req = (struct cpl_abort_req *)skb->head; | |
2126bc5e | 474 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 475 | req->cmd = CPL_ABORT_SEND_RST; |
476 | t4_set_arp_err_handler(skb, csk, abort_arp_failure); | |
477 | INIT_TP_WR(req, csk->tid); | |
478 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, csk->tid)); | |
479 | req->rsvd0 = htonl(csk->snd_nxt); | |
480 | req->rsvd1 = !cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT); | |
481 | ||
482 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
483 | "csk 0x%p,%u,0x%lx,%u, snd_nxt %u, 0x%x.\n", | |
484 | csk, csk->state, csk->flags, csk->tid, csk->snd_nxt, | |
485 | req->rsvd1); | |
486 | ||
487 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
488 | } | |
489 | ||
490 | static void send_abort_rpl(struct cxgbi_sock *csk, int rst_status) | |
491 | { | |
492 | struct sk_buff *skb = csk->cpl_abort_rpl; | |
493 | struct cpl_abort_rpl *rpl = (struct cpl_abort_rpl *)skb->head; | |
494 | ||
495 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
496 | "csk 0x%p,%u,0x%lx,%u, status %d.\n", | |
497 | csk, csk->state, csk->flags, csk->tid, rst_status); | |
498 | ||
499 | csk->cpl_abort_rpl = NULL; | |
2126bc5e | 500 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 501 | INIT_TP_WR(rpl, csk->tid); |
502 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, csk->tid)); | |
503 | rpl->cmd = rst_status; | |
504 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
505 | } | |
506 | ||
507 | /* | |
508 | * CPL connection rx data ack: host -> | |
509 | * Send RX credits through an RX_DATA_ACK CPL message. Returns the number of | |
510 | * credits sent. | |
511 | */ | |
512 | static u32 send_rx_credits(struct cxgbi_sock *csk, u32 credits) | |
513 | { | |
514 | struct sk_buff *skb; | |
515 | struct cpl_rx_data_ack *req; | |
516 | ||
517 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
518 | "csk 0x%p,%u,0x%lx,%u, credit %u.\n", | |
519 | csk, csk->state, csk->flags, csk->tid, credits); | |
520 | ||
24d3f95a | 521 | skb = alloc_wr(sizeof(*req), 0, GFP_ATOMIC); |
7b36b6e0 | 522 | if (!skb) { |
523 | pr_info("csk 0x%p, credit %u, OOM.\n", csk, credits); | |
524 | return 0; | |
525 | } | |
526 | req = (struct cpl_rx_data_ack *)skb->head; | |
527 | ||
528 | set_wr_txq(skb, CPL_PRIORITY_ACK, csk->port_id); | |
529 | INIT_TP_WR(req, csk->tid); | |
530 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
531 | csk->tid)); | |
d7990b0c AB |
532 | req->credit_dack = cpu_to_be32(RX_CREDITS_V(credits) |
533 | | RX_FORCE_ACK_F); | |
7b36b6e0 | 534 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); |
535 | return credits; | |
536 | } | |
537 | ||
538 | /* | |
539 | * sgl_len - calculates the size of an SGL of the given capacity | |
540 | * @n: the number of SGL entries | |
541 | * Calculates the number of flits needed for a scatter/gather list that | |
542 | * can hold the given number of entries. | |
543 | */ | |
544 | static inline unsigned int sgl_len(unsigned int n) | |
545 | { | |
546 | n--; | |
547 | return (3 * n) / 2 + (n & 1) + 2; | |
548 | } | |
549 | ||
550 | /* | |
551 | * calc_tx_flits_ofld - calculate # of flits for an offload packet | |
552 | * @skb: the packet | |
553 | * | |
554 | * Returns the number of flits needed for the given offload packet. | |
555 | * These packets are already fully constructed and no additional headers | |
556 | * will be added. | |
557 | */ | |
558 | static inline unsigned int calc_tx_flits_ofld(const struct sk_buff *skb) | |
559 | { | |
560 | unsigned int flits, cnt; | |
561 | ||
562 | if (is_ofld_imm(skb)) | |
563 | return DIV_ROUND_UP(skb->len, 8); | |
564 | flits = skb_transport_offset(skb) / 8; | |
565 | cnt = skb_shinfo(skb)->nr_frags; | |
499e2e6f | 566 | if (skb_tail_pointer(skb) != skb_transport_header(skb)) |
7b36b6e0 | 567 | cnt++; |
568 | return flits + sgl_len(cnt); | |
569 | } | |
570 | ||
64bfead8 KX |
571 | #define FLOWC_WR_NPARAMS_MIN 9 |
572 | static inline int tx_flowc_wr_credits(int *nparamsp, int *flowclenp) | |
573 | { | |
574 | int nparams, flowclen16, flowclen; | |
575 | ||
576 | nparams = FLOWC_WR_NPARAMS_MIN; | |
577 | flowclen = offsetof(struct fw_flowc_wr, mnemval[nparams]); | |
578 | flowclen16 = DIV_ROUND_UP(flowclen, 16); | |
579 | flowclen = flowclen16 * 16; | |
580 | /* | |
581 | * Return the number of 16-byte credits used by the FlowC request. | |
582 | * Pass back the nparams and actual FlowC length if requested. | |
583 | */ | |
584 | if (nparamsp) | |
585 | *nparamsp = nparams; | |
586 | if (flowclenp) | |
587 | *flowclenp = flowclen; | |
588 | ||
589 | return flowclen16; | |
590 | } | |
591 | ||
592 | static inline int send_tx_flowc_wr(struct cxgbi_sock *csk) | |
7b36b6e0 | 593 | { |
594 | struct sk_buff *skb; | |
595 | struct fw_flowc_wr *flowc; | |
64bfead8 | 596 | int nparams, flowclen16, flowclen; |
7b36b6e0 | 597 | |
64bfead8 | 598 | flowclen16 = tx_flowc_wr_credits(&nparams, &flowclen); |
24d3f95a | 599 | skb = alloc_wr(flowclen, 0, GFP_ATOMIC); |
7b36b6e0 | 600 | flowc = (struct fw_flowc_wr *)skb->head; |
601 | flowc->op_to_nparams = | |
64bfead8 | 602 | htonl(FW_WR_OP_V(FW_FLOWC_WR) | FW_FLOWC_WR_NPARAMS_V(nparams)); |
7b36b6e0 | 603 | flowc->flowid_len16 = |
64bfead8 | 604 | htonl(FW_WR_LEN16_V(flowclen16) | FW_WR_FLOWID_V(csk->tid)); |
7b36b6e0 | 605 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; |
e27d6169 | 606 | flowc->mnemval[0].val = htonl(csk->cdev->pfvf); |
7b36b6e0 | 607 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
608 | flowc->mnemval[1].val = htonl(csk->tx_chan); | |
609 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
610 | flowc->mnemval[2].val = htonl(csk->tx_chan); | |
611 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
612 | flowc->mnemval[3].val = htonl(csk->rss_qid); | |
613 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
614 | flowc->mnemval[4].val = htonl(csk->snd_nxt); | |
615 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
616 | flowc->mnemval[5].val = htonl(csk->rcv_nxt); | |
617 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
81daf10c | 618 | flowc->mnemval[6].val = htonl(csk->snd_win); |
7b36b6e0 | 619 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; |
620 | flowc->mnemval[7].val = htonl(csk->advmss); | |
621 | flowc->mnemval[8].mnemonic = 0; | |
622 | flowc->mnemval[8].val = 0; | |
64bfead8 KX |
623 | flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_TXDATAPLEN_MAX; |
624 | flowc->mnemval[8].val = 16384; | |
625 | ||
2126bc5e | 626 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
7b36b6e0 | 627 | |
628 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
629 | "csk 0x%p, tid 0x%x, %u,%u,%u,%u,%u,%u,%u.\n", | |
630 | csk, csk->tid, 0, csk->tx_chan, csk->rss_qid, | |
81daf10c | 631 | csk->snd_nxt, csk->rcv_nxt, csk->snd_win, |
7b36b6e0 | 632 | csk->advmss); |
633 | ||
634 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
64bfead8 KX |
635 | |
636 | return flowclen16; | |
7b36b6e0 | 637 | } |
638 | ||
639 | static inline void make_tx_data_wr(struct cxgbi_sock *csk, struct sk_buff *skb, | |
640 | int dlen, int len, u32 credits, int compl) | |
641 | { | |
642 | struct fw_ofld_tx_data_wr *req; | |
643 | unsigned int submode = cxgbi_skcb_ulp_mode(skb) & 3; | |
e2ac9628 | 644 | unsigned int wr_ulp_mode = 0, val; |
7857c62a | 645 | bool imm = is_ofld_imm(skb); |
7b36b6e0 | 646 | |
d58ff351 | 647 | req = __skb_push(skb, sizeof(*req)); |
7b36b6e0 | 648 | |
7857c62a | 649 | if (imm) { |
e2ac9628 HS |
650 | req->op_to_immdlen = htonl(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
651 | FW_WR_COMPL_F | | |
652 | FW_WR_IMMDLEN_V(dlen)); | |
653 | req->flowid_len16 = htonl(FW_WR_FLOWID_V(csk->tid) | | |
654 | FW_WR_LEN16_V(credits)); | |
7b36b6e0 | 655 | } else { |
656 | req->op_to_immdlen = | |
e2ac9628 HS |
657 | cpu_to_be32(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
658 | FW_WR_COMPL_F | | |
659 | FW_WR_IMMDLEN_V(0)); | |
7b36b6e0 | 660 | req->flowid_len16 = |
e2ac9628 HS |
661 | cpu_to_be32(FW_WR_FLOWID_V(csk->tid) | |
662 | FW_WR_LEN16_V(credits)); | |
7b36b6e0 | 663 | } |
664 | if (submode) | |
e2ac9628 HS |
665 | wr_ulp_mode = FW_OFLD_TX_DATA_WR_ULPMODE_V(ULP2_MODE_ISCSI) | |
666 | FW_OFLD_TX_DATA_WR_ULPSUBMODE_V(submode); | |
667 | val = skb_peek(&csk->write_queue) ? 0 : 1; | |
6aca4112 | 668 | req->tunnel_to_proxy = htonl(wr_ulp_mode | |
e2ac9628 | 669 | FW_OFLD_TX_DATA_WR_SHOVE_V(val)); |
7b36b6e0 | 670 | req->plen = htonl(len); |
671 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) | |
672 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
673 | } | |
674 | ||
675 | static void arp_failure_skb_discard(void *handle, struct sk_buff *skb) | |
676 | { | |
677 | kfree_skb(skb); | |
678 | } | |
679 | ||
680 | static int push_tx_frames(struct cxgbi_sock *csk, int req_completion) | |
681 | { | |
682 | int total_size = 0; | |
683 | struct sk_buff *skb; | |
684 | ||
685 | if (unlikely(csk->state < CTP_ESTABLISHED || | |
686 | csk->state == CTP_CLOSE_WAIT_1 || csk->state >= CTP_ABORTING)) { | |
687 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK | | |
688 | 1 << CXGBI_DBG_PDU_TX, | |
689 | "csk 0x%p,%u,0x%lx,%u, in closing state.\n", | |
690 | csk, csk->state, csk->flags, csk->tid); | |
691 | return 0; | |
692 | } | |
693 | ||
694 | while (csk->wr_cred && (skb = skb_peek(&csk->write_queue)) != NULL) { | |
695 | int dlen = skb->len; | |
696 | int len = skb->len; | |
697 | unsigned int credits_needed; | |
64bfead8 | 698 | int flowclen16 = 0; |
7b36b6e0 | 699 | |
700 | skb_reset_transport_header(skb); | |
701 | if (is_ofld_imm(skb)) | |
84944d8c | 702 | credits_needed = DIV_ROUND_UP(dlen, 16); |
7b36b6e0 | 703 | else |
84944d8c KX |
704 | credits_needed = DIV_ROUND_UP( |
705 | 8 * calc_tx_flits_ofld(skb), | |
706 | 16); | |
707 | ||
708 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) | |
709 | credits_needed += DIV_ROUND_UP( | |
710 | sizeof(struct fw_ofld_tx_data_wr), | |
7b36b6e0 | 711 | 16); |
712 | ||
64bfead8 KX |
713 | /* |
714 | * Assumes the initial credits is large enough to support | |
715 | * fw_flowc_wr plus largest possible first payload | |
716 | */ | |
717 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
718 | flowclen16 = send_tx_flowc_wr(csk); | |
719 | csk->wr_cred -= flowclen16; | |
720 | csk->wr_una_cred += flowclen16; | |
721 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
722 | } | |
723 | ||
7b36b6e0 | 724 | if (csk->wr_cred < credits_needed) { |
725 | log_debug(1 << CXGBI_DBG_PDU_TX, | |
726 | "csk 0x%p, skb %u/%u, wr %d < %u.\n", | |
727 | csk, skb->len, skb->data_len, | |
728 | credits_needed, csk->wr_cred); | |
729 | break; | |
730 | } | |
731 | __skb_unlink(skb, &csk->write_queue); | |
2126bc5e | 732 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); |
64bfead8 | 733 | skb->csum = credits_needed + flowclen16; |
7b36b6e0 | 734 | csk->wr_cred -= credits_needed; |
735 | csk->wr_una_cred += credits_needed; | |
736 | cxgbi_sock_enqueue_wr(csk, skb); | |
737 | ||
738 | log_debug(1 << CXGBI_DBG_PDU_TX, | |
739 | "csk 0x%p, skb %u/%u, wr %d, left %u, unack %u.\n", | |
740 | csk, skb->len, skb->data_len, credits_needed, | |
741 | csk->wr_cred, csk->wr_una_cred); | |
742 | ||
743 | if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) { | |
7b36b6e0 | 744 | len += cxgbi_ulp_extra_len(cxgbi_skcb_ulp_mode(skb)); |
745 | make_tx_data_wr(csk, skb, dlen, len, credits_needed, | |
746 | req_completion); | |
747 | csk->snd_nxt += len; | |
748 | cxgbi_skcb_clear_flag(skb, SKCBF_TX_NEED_HDR); | |
fe9b34bf VP |
749 | } else if (cxgbi_skcb_test_flag(skb, SKCBF_TX_FLAG_COMPL) && |
750 | (csk->wr_una_cred >= (csk->wr_max_cred / 2))) { | |
751 | struct cpl_close_con_req *req = | |
752 | (struct cpl_close_con_req *)skb->data; | |
753 | req->wr.wr_hi |= htonl(FW_WR_COMPL_F); | |
7b36b6e0 | 754 | } |
755 | total_size += skb->truesize; | |
756 | t4_set_arp_err_handler(skb, csk, arp_failure_skb_discard); | |
757 | ||
758 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_TX, | |
759 | "csk 0x%p,%u,0x%lx,%u, skb 0x%p, %u.\n", | |
760 | csk, csk->state, csk->flags, csk->tid, skb, len); | |
761 | ||
762 | cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); | |
763 | } | |
764 | return total_size; | |
765 | } | |
766 | ||
767 | static inline void free_atid(struct cxgbi_sock *csk) | |
768 | { | |
769 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); | |
770 | ||
771 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) { | |
772 | cxgb4_free_atid(lldi->tids, csk->atid); | |
773 | cxgbi_sock_clear_flag(csk, CTPF_HAS_ATID); | |
774 | cxgbi_sock_put(csk); | |
775 | } | |
776 | } | |
777 | ||
778 | static void do_act_establish(struct cxgbi_device *cdev, struct sk_buff *skb) | |
779 | { | |
780 | struct cxgbi_sock *csk; | |
781 | struct cpl_act_establish *req = (struct cpl_act_establish *)skb->data; | |
782 | unsigned short tcp_opt = ntohs(req->tcp_opt); | |
783 | unsigned int tid = GET_TID(req); | |
6c53e938 | 784 | unsigned int atid = TID_TID_G(ntohl(req->tos_atid)); |
7b36b6e0 | 785 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
786 | struct tid_info *t = lldi->tids; | |
787 | u32 rcv_isn = be32_to_cpu(req->rcv_isn); | |
788 | ||
789 | csk = lookup_atid(t, atid); | |
790 | if (unlikely(!csk)) { | |
791 | pr_err("NO conn. for atid %u, cdev 0x%p.\n", atid, cdev); | |
792 | goto rel_skb; | |
793 | } | |
794 | ||
e27d6169 | 795 | if (csk->atid != atid) { |
796 | pr_err("bad conn atid %u, csk 0x%p,%u,0x%lx,tid %u, atid %u.\n", | |
797 | atid, csk, csk->state, csk->flags, csk->tid, csk->atid); | |
798 | goto rel_skb; | |
799 | } | |
800 | ||
759a0cc5 AB |
801 | pr_info_ipaddr("atid 0x%x, tid 0x%x, csk 0x%p,%u,0x%lx, isn %u.\n", |
802 | (&csk->saddr), (&csk->daddr), | |
803 | atid, tid, csk, csk->state, csk->flags, rcv_isn); | |
804 | ||
1fe1fdb0 | 805 | module_put(cdev->owner); |
7b36b6e0 | 806 | |
807 | cxgbi_sock_get(csk); | |
808 | csk->tid = tid; | |
1dec4cec | 809 | cxgb4_insert_tid(lldi->tids, csk, tid, csk->csk_family); |
7b36b6e0 | 810 | cxgbi_sock_set_flag(csk, CTPF_HAS_TID); |
811 | ||
812 | free_atid(csk); | |
813 | ||
814 | spin_lock_bh(&csk->lock); | |
815 | if (unlikely(csk->state != CTP_ACTIVE_OPEN)) | |
816 | pr_info("csk 0x%p,%u,0x%lx,%u, got EST.\n", | |
817 | csk, csk->state, csk->flags, csk->tid); | |
818 | ||
819 | if (csk->retry_timer.function) { | |
820 | del_timer(&csk->retry_timer); | |
821 | csk->retry_timer.function = NULL; | |
822 | } | |
823 | ||
824 | csk->copied_seq = csk->rcv_wup = csk->rcv_nxt = rcv_isn; | |
825 | /* | |
826 | * Causes the first RX_DATA_ACK to supply any Rx credits we couldn't | |
827 | * pass through opt0. | |
828 | */ | |
81daf10c KX |
829 | if (csk->rcv_win > (RCV_BUFSIZ_MASK << 10)) |
830 | csk->rcv_wup -= csk->rcv_win - (RCV_BUFSIZ_MASK << 10); | |
7b36b6e0 | 831 | |
6c53e938 HS |
832 | csk->advmss = lldi->mtus[TCPOPT_MSS_G(tcp_opt)] - 40; |
833 | if (TCPOPT_TSTAMP_G(tcp_opt)) | |
7b36b6e0 | 834 | csk->advmss -= 12; |
835 | if (csk->advmss < 128) | |
836 | csk->advmss = 128; | |
837 | ||
838 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
839 | "csk 0x%p, mss_idx %u, advmss %u.\n", | |
6c53e938 | 840 | csk, TCPOPT_MSS_G(tcp_opt), csk->advmss); |
7b36b6e0 | 841 | |
842 | cxgbi_sock_established(csk, ntohl(req->snd_isn), ntohs(req->tcp_opt)); | |
843 | ||
844 | if (unlikely(cxgbi_sock_flag(csk, CTPF_ACTIVE_CLOSE_NEEDED))) | |
845 | send_abort_req(csk); | |
846 | else { | |
847 | if (skb_queue_len(&csk->write_queue)) | |
848 | push_tx_frames(csk, 0); | |
849 | cxgbi_conn_tx_open(csk); | |
850 | } | |
851 | spin_unlock_bh(&csk->lock); | |
852 | ||
853 | rel_skb: | |
854 | __kfree_skb(skb); | |
855 | } | |
856 | ||
857 | static int act_open_rpl_status_to_errno(int status) | |
858 | { | |
859 | switch (status) { | |
860 | case CPL_ERR_CONN_RESET: | |
861 | return -ECONNREFUSED; | |
862 | case CPL_ERR_ARP_MISS: | |
863 | return -EHOSTUNREACH; | |
864 | case CPL_ERR_CONN_TIMEDOUT: | |
865 | return -ETIMEDOUT; | |
866 | case CPL_ERR_TCAM_FULL: | |
867 | return -ENOMEM; | |
868 | case CPL_ERR_CONN_EXIST: | |
869 | return -EADDRINUSE; | |
870 | default: | |
871 | return -EIO; | |
872 | } | |
873 | } | |
874 | ||
875 | static void csk_act_open_retry_timer(unsigned long data) | |
876 | { | |
001586a7 | 877 | struct sk_buff *skb = NULL; |
7b36b6e0 | 878 | struct cxgbi_sock *csk = (struct cxgbi_sock *)data; |
3bd3e8bf | 879 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); |
759a0cc5 AB |
880 | void (*send_act_open_func)(struct cxgbi_sock *, struct sk_buff *, |
881 | struct l2t_entry *); | |
882 | int t4 = is_t4(lldi->adapter_type), size, size6; | |
7b36b6e0 | 883 | |
884 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
885 | "csk 0x%p,%u,0x%lx,%u.\n", | |
886 | csk, csk->state, csk->flags, csk->tid); | |
887 | ||
888 | cxgbi_sock_get(csk); | |
889 | spin_lock_bh(&csk->lock); | |
759a0cc5 AB |
890 | |
891 | if (t4) { | |
892 | size = sizeof(struct cpl_act_open_req); | |
893 | size6 = sizeof(struct cpl_act_open_req6); | |
894 | } else { | |
895 | size = sizeof(struct cpl_t5_act_open_req); | |
896 | size6 = sizeof(struct cpl_t5_act_open_req6); | |
897 | } | |
898 | ||
899 | if (csk->csk_family == AF_INET) { | |
900 | send_act_open_func = send_act_open_req; | |
901 | skb = alloc_wr(size, 0, GFP_ATOMIC); | |
f42bb57c | 902 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
903 | } else { |
904 | send_act_open_func = send_act_open_req6; | |
905 | skb = alloc_wr(size6, 0, GFP_ATOMIC); | |
f42bb57c | 906 | #endif |
759a0cc5 AB |
907 | } |
908 | ||
7b36b6e0 | 909 | if (!skb) |
910 | cxgbi_sock_fail_act_open(csk, -ENOMEM); | |
911 | else { | |
912 | skb->sk = (struct sock *)csk; | |
913 | t4_set_arp_err_handler(skb, csk, | |
759a0cc5 AB |
914 | cxgbi_sock_act_open_req_arp_failure); |
915 | send_act_open_func(csk, skb, csk->l2t); | |
7b36b6e0 | 916 | } |
759a0cc5 | 917 | |
7b36b6e0 | 918 | spin_unlock_bh(&csk->lock); |
919 | cxgbi_sock_put(csk); | |
759a0cc5 | 920 | |
7b36b6e0 | 921 | } |
922 | ||
928567ad KX |
923 | static inline bool is_neg_adv(unsigned int status) |
924 | { | |
925 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
926 | status == CPL_ERR_KEEPALV_NEG_ADVICE || | |
927 | status == CPL_ERR_PERSIST_NEG_ADVICE; | |
928 | } | |
929 | ||
7b36b6e0 | 930 | static void do_act_open_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) |
931 | { | |
932 | struct cxgbi_sock *csk; | |
933 | struct cpl_act_open_rpl *rpl = (struct cpl_act_open_rpl *)skb->data; | |
934 | unsigned int tid = GET_TID(rpl); | |
935 | unsigned int atid = | |
6c53e938 HS |
936 | TID_TID_G(AOPEN_ATID_G(be32_to_cpu(rpl->atid_status))); |
937 | unsigned int status = AOPEN_STATUS_G(be32_to_cpu(rpl->atid_status)); | |
7b36b6e0 | 938 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
939 | struct tid_info *t = lldi->tids; | |
940 | ||
941 | csk = lookup_atid(t, atid); | |
942 | if (unlikely(!csk)) { | |
943 | pr_err("NO matching conn. atid %u, tid %u.\n", atid, tid); | |
944 | goto rel_skb; | |
945 | } | |
946 | ||
759a0cc5 AB |
947 | pr_info_ipaddr("tid %u/%u, status %u.\n" |
948 | "csk 0x%p,%u,0x%lx. ", (&csk->saddr), (&csk->daddr), | |
949 | atid, tid, status, csk, csk->state, csk->flags); | |
7b36b6e0 | 950 | |
928567ad | 951 | if (is_neg_adv(status)) |
150cca7c KX |
952 | goto rel_skb; |
953 | ||
1fe1fdb0 | 954 | module_put(cdev->owner); |
ee7255ad | 955 | |
7b36b6e0 | 956 | if (status && status != CPL_ERR_TCAM_FULL && |
957 | status != CPL_ERR_CONN_EXIST && | |
958 | status != CPL_ERR_ARP_MISS) | |
1dec4cec GG |
959 | cxgb4_remove_tid(lldi->tids, csk->port_id, GET_TID(rpl), |
960 | csk->csk_family); | |
7b36b6e0 | 961 | |
962 | cxgbi_sock_get(csk); | |
963 | spin_lock_bh(&csk->lock); | |
964 | ||
965 | if (status == CPL_ERR_CONN_EXIST && | |
966 | csk->retry_timer.function != csk_act_open_retry_timer) { | |
967 | csk->retry_timer.function = csk_act_open_retry_timer; | |
968 | mod_timer(&csk->retry_timer, jiffies + HZ / 2); | |
969 | } else | |
970 | cxgbi_sock_fail_act_open(csk, | |
971 | act_open_rpl_status_to_errno(status)); | |
972 | ||
973 | spin_unlock_bh(&csk->lock); | |
974 | cxgbi_sock_put(csk); | |
975 | rel_skb: | |
976 | __kfree_skb(skb); | |
977 | } | |
978 | ||
979 | static void do_peer_close(struct cxgbi_device *cdev, struct sk_buff *skb) | |
980 | { | |
981 | struct cxgbi_sock *csk; | |
982 | struct cpl_peer_close *req = (struct cpl_peer_close *)skb->data; | |
983 | unsigned int tid = GET_TID(req); | |
984 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
985 | struct tid_info *t = lldi->tids; | |
986 | ||
987 | csk = lookup_tid(t, tid); | |
988 | if (unlikely(!csk)) { | |
989 | pr_err("can't find connection for tid %u.\n", tid); | |
990 | goto rel_skb; | |
991 | } | |
759a0cc5 AB |
992 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", |
993 | (&csk->saddr), (&csk->daddr), | |
994 | csk, csk->state, csk->flags, csk->tid); | |
7b36b6e0 | 995 | cxgbi_sock_rcv_peer_close(csk); |
996 | rel_skb: | |
997 | __kfree_skb(skb); | |
998 | } | |
999 | ||
1000 | static void do_close_con_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1001 | { | |
1002 | struct cxgbi_sock *csk; | |
1003 | struct cpl_close_con_rpl *rpl = (struct cpl_close_con_rpl *)skb->data; | |
1004 | unsigned int tid = GET_TID(rpl); | |
1005 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1006 | struct tid_info *t = lldi->tids; | |
1007 | ||
1008 | csk = lookup_tid(t, tid); | |
1009 | if (unlikely(!csk)) { | |
1010 | pr_err("can't find connection for tid %u.\n", tid); | |
1011 | goto rel_skb; | |
1012 | } | |
759a0cc5 AB |
1013 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", |
1014 | (&csk->saddr), (&csk->daddr), | |
1015 | csk, csk->state, csk->flags, csk->tid); | |
7b36b6e0 | 1016 | cxgbi_sock_rcv_close_conn_rpl(csk, ntohl(rpl->snd_nxt)); |
1017 | rel_skb: | |
1018 | __kfree_skb(skb); | |
1019 | } | |
1020 | ||
1021 | static int abort_status_to_errno(struct cxgbi_sock *csk, int abort_reason, | |
1022 | int *need_rst) | |
1023 | { | |
1024 | switch (abort_reason) { | |
1025 | case CPL_ERR_BAD_SYN: /* fall through */ | |
1026 | case CPL_ERR_CONN_RESET: | |
1027 | return csk->state > CTP_ESTABLISHED ? | |
1028 | -EPIPE : -ECONNRESET; | |
1029 | case CPL_ERR_XMIT_TIMEDOUT: | |
1030 | case CPL_ERR_PERSIST_TIMEDOUT: | |
1031 | case CPL_ERR_FINWAIT2_TIMEDOUT: | |
1032 | case CPL_ERR_KEEPALIVE_TIMEDOUT: | |
1033 | return -ETIMEDOUT; | |
1034 | default: | |
1035 | return -EIO; | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | static void do_abort_req_rss(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1040 | { | |
1041 | struct cxgbi_sock *csk; | |
1042 | struct cpl_abort_req_rss *req = (struct cpl_abort_req_rss *)skb->data; | |
1043 | unsigned int tid = GET_TID(req); | |
1044 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1045 | struct tid_info *t = lldi->tids; | |
1046 | int rst_status = CPL_ABORT_NO_RST; | |
1047 | ||
1048 | csk = lookup_tid(t, tid); | |
1049 | if (unlikely(!csk)) { | |
1050 | pr_err("can't find connection for tid %u.\n", tid); | |
1051 | goto rel_skb; | |
1052 | } | |
1053 | ||
759a0cc5 AB |
1054 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", |
1055 | (&csk->saddr), (&csk->daddr), | |
1056 | csk, csk->state, csk->flags, csk->tid, req->status); | |
7b36b6e0 | 1057 | |
928567ad | 1058 | if (is_neg_adv(req->status)) |
7b36b6e0 | 1059 | goto rel_skb; |
1060 | ||
1061 | cxgbi_sock_get(csk); | |
1062 | spin_lock_bh(&csk->lock); | |
1063 | ||
7b07bf24 AB |
1064 | cxgbi_sock_clear_flag(csk, CTPF_ABORT_REQ_RCVD); |
1065 | ||
1066 | if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { | |
1067 | send_tx_flowc_wr(csk); | |
1068 | cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); | |
7b36b6e0 | 1069 | } |
1070 | ||
7b07bf24 AB |
1071 | cxgbi_sock_set_flag(csk, CTPF_ABORT_REQ_RCVD); |
1072 | cxgbi_sock_set_state(csk, CTP_ABORTING); | |
1073 | ||
7b36b6e0 | 1074 | send_abort_rpl(csk, rst_status); |
1075 | ||
1076 | if (!cxgbi_sock_flag(csk, CTPF_ABORT_RPL_PENDING)) { | |
1077 | csk->err = abort_status_to_errno(csk, req->status, &rst_status); | |
1078 | cxgbi_sock_closed(csk); | |
1079 | } | |
7b07bf24 | 1080 | |
7b36b6e0 | 1081 | spin_unlock_bh(&csk->lock); |
1082 | cxgbi_sock_put(csk); | |
1083 | rel_skb: | |
1084 | __kfree_skb(skb); | |
1085 | } | |
1086 | ||
1087 | static void do_abort_rpl_rss(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1088 | { | |
1089 | struct cxgbi_sock *csk; | |
1090 | struct cpl_abort_rpl_rss *rpl = (struct cpl_abort_rpl_rss *)skb->data; | |
1091 | unsigned int tid = GET_TID(rpl); | |
1092 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1093 | struct tid_info *t = lldi->tids; | |
1094 | ||
1095 | csk = lookup_tid(t, tid); | |
1096 | if (!csk) | |
1097 | goto rel_skb; | |
1098 | ||
759a0cc5 AB |
1099 | if (csk) |
1100 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", | |
1101 | (&csk->saddr), (&csk->daddr), csk, | |
1102 | csk->state, csk->flags, csk->tid, rpl->status); | |
7b36b6e0 | 1103 | |
1104 | if (rpl->status == CPL_ERR_ABORT_FAILED) | |
1105 | goto rel_skb; | |
1106 | ||
1107 | cxgbi_sock_rcv_abort_rpl(csk); | |
1108 | rel_skb: | |
1109 | __kfree_skb(skb); | |
1110 | } | |
1111 | ||
f7bcd2e1 KX |
1112 | static void do_rx_data(struct cxgbi_device *cdev, struct sk_buff *skb) |
1113 | { | |
1114 | struct cxgbi_sock *csk; | |
1115 | struct cpl_rx_data *cpl = (struct cpl_rx_data *)skb->data; | |
1116 | unsigned int tid = GET_TID(cpl); | |
1117 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1118 | struct tid_info *t = lldi->tids; | |
1119 | ||
1120 | csk = lookup_tid(t, tid); | |
1121 | if (!csk) { | |
1122 | pr_err("can't find connection for tid %u.\n", tid); | |
1123 | } else { | |
1124 | /* not expecting this, reset the connection. */ | |
1125 | pr_err("csk 0x%p, tid %u, rcv cpl_rx_data.\n", csk, tid); | |
1126 | spin_lock_bh(&csk->lock); | |
1127 | send_abort_req(csk); | |
1128 | spin_unlock_bh(&csk->lock); | |
1129 | } | |
1130 | __kfree_skb(skb); | |
1131 | } | |
1132 | ||
7b36b6e0 | 1133 | static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb) |
1134 | { | |
1135 | struct cxgbi_sock *csk; | |
1136 | struct cpl_iscsi_hdr *cpl = (struct cpl_iscsi_hdr *)skb->data; | |
1137 | unsigned short pdu_len_ddp = be16_to_cpu(cpl->pdu_len_ddp); | |
1138 | unsigned int tid = GET_TID(cpl); | |
1139 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1140 | struct tid_info *t = lldi->tids; | |
7b36b6e0 | 1141 | |
1142 | csk = lookup_tid(t, tid); | |
1143 | if (unlikely(!csk)) { | |
1144 | pr_err("can't find conn. for tid %u.\n", tid); | |
1145 | goto rel_skb; | |
1146 | } | |
1147 | ||
1148 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1149 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p,%u, 0x%x.\n", | |
1150 | csk, csk->state, csk->flags, csk->tid, skb, skb->len, | |
1151 | pdu_len_ddp); | |
1152 | ||
1153 | spin_lock_bh(&csk->lock); | |
1154 | ||
1155 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1156 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1157 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1158 | csk, csk->state, csk->flags, csk->tid); | |
1159 | if (csk->state != CTP_ABORTING) | |
1160 | goto abort_conn; | |
1161 | else | |
1162 | goto discard; | |
1163 | } | |
1164 | ||
1165 | cxgbi_skcb_tcp_seq(skb) = ntohl(cpl->seq); | |
e27d6169 | 1166 | cxgbi_skcb_flags(skb) = 0; |
1167 | ||
7b36b6e0 | 1168 | skb_reset_transport_header(skb); |
1169 | __skb_pull(skb, sizeof(*cpl)); | |
1170 | __pskb_trim(skb, ntohs(cpl->len)); | |
1171 | ||
1172 | if (!csk->skb_ulp_lhdr) { | |
1173 | unsigned char *bhs; | |
3bd3e8bf | 1174 | unsigned int hlen, dlen, plen; |
7b36b6e0 | 1175 | |
1176 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1177 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p header.\n", | |
1178 | csk, csk->state, csk->flags, csk->tid, skb); | |
1179 | csk->skb_ulp_lhdr = skb; | |
e27d6169 | 1180 | cxgbi_skcb_set_flag(skb, SKCBF_RX_HDR); |
7b36b6e0 | 1181 | |
e27d6169 | 1182 | if (cxgbi_skcb_tcp_seq(skb) != csk->rcv_nxt) { |
7b36b6e0 | 1183 | pr_info("tid %u, CPL_ISCSI_HDR, bad seq, 0x%x/0x%x.\n", |
e27d6169 | 1184 | csk->tid, cxgbi_skcb_tcp_seq(skb), |
7b36b6e0 | 1185 | csk->rcv_nxt); |
1186 | goto abort_conn; | |
1187 | } | |
1188 | ||
e27d6169 | 1189 | bhs = skb->data; |
7b36b6e0 | 1190 | hlen = ntohs(cpl->len); |
1191 | dlen = ntohl(*(unsigned int *)(bhs + 4)) & 0xFFFFFF; | |
1192 | ||
bdc590b9 | 1193 | plen = ISCSI_PDU_LEN_G(pdu_len_ddp); |
3bd3e8bf KX |
1194 | if (is_t4(lldi->adapter_type)) |
1195 | plen -= 40; | |
1196 | ||
1197 | if ((hlen + dlen) != plen) { | |
7b36b6e0 | 1198 | pr_info("tid 0x%x, CPL_ISCSI_HDR, pdu len " |
1199 | "mismatch %u != %u + %u, seq 0x%x.\n", | |
3bd3e8bf KX |
1200 | csk->tid, plen, hlen, dlen, |
1201 | cxgbi_skcb_tcp_seq(skb)); | |
7b36b6e0 | 1202 | goto abort_conn; |
1203 | } | |
1204 | ||
1205 | cxgbi_skcb_rx_pdulen(skb) = (hlen + dlen + 3) & (~0x3); | |
1206 | if (dlen) | |
1207 | cxgbi_skcb_rx_pdulen(skb) += csk->dcrc_len; | |
1208 | csk->rcv_nxt += cxgbi_skcb_rx_pdulen(skb); | |
1209 | ||
1210 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1211 | "csk 0x%p, skb 0x%p, 0x%x,%u+%u,0x%x,0x%x.\n", | |
1212 | csk, skb, *bhs, hlen, dlen, | |
1213 | ntohl(*((unsigned int *)(bhs + 16))), | |
1214 | ntohl(*((unsigned int *)(bhs + 24)))); | |
1215 | ||
1216 | } else { | |
e27d6169 | 1217 | struct sk_buff *lskb = csk->skb_ulp_lhdr; |
7b36b6e0 | 1218 | |
e27d6169 | 1219 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA); |
7b36b6e0 | 1220 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, |
1221 | "csk 0x%p,%u,0x%lx, skb 0x%p data, 0x%p.\n", | |
1222 | csk, csk->state, csk->flags, skb, lskb); | |
1223 | } | |
1224 | ||
1225 | __skb_queue_tail(&csk->receive_queue, skb); | |
1226 | spin_unlock_bh(&csk->lock); | |
1227 | return; | |
1228 | ||
1229 | abort_conn: | |
1230 | send_abort_req(csk); | |
1231 | discard: | |
1232 | spin_unlock_bh(&csk->lock); | |
1233 | rel_skb: | |
1234 | __kfree_skb(skb); | |
1235 | } | |
1236 | ||
44830d8f VP |
1237 | static void do_rx_iscsi_data(struct cxgbi_device *cdev, struct sk_buff *skb) |
1238 | { | |
1239 | struct cxgbi_sock *csk; | |
1240 | struct cpl_iscsi_hdr *cpl = (struct cpl_iscsi_hdr *)skb->data; | |
1241 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1242 | struct tid_info *t = lldi->tids; | |
1243 | struct sk_buff *lskb; | |
1244 | u32 tid = GET_TID(cpl); | |
1245 | u16 pdu_len_ddp = be16_to_cpu(cpl->pdu_len_ddp); | |
1246 | ||
1247 | csk = lookup_tid(t, tid); | |
1248 | if (unlikely(!csk)) { | |
1249 | pr_err("can't find conn. for tid %u.\n", tid); | |
1250 | goto rel_skb; | |
1251 | } | |
1252 | ||
1253 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1254 | "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p,%u, 0x%x.\n", | |
1255 | csk, csk->state, csk->flags, csk->tid, skb, | |
1256 | skb->len, pdu_len_ddp); | |
1257 | ||
1258 | spin_lock_bh(&csk->lock); | |
1259 | ||
1260 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1261 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1262 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1263 | csk, csk->state, csk->flags, csk->tid); | |
1264 | ||
1265 | if (csk->state != CTP_ABORTING) | |
1266 | goto abort_conn; | |
1267 | else | |
1268 | goto discard; | |
1269 | } | |
1270 | ||
1271 | cxgbi_skcb_tcp_seq(skb) = be32_to_cpu(cpl->seq); | |
1272 | cxgbi_skcb_flags(skb) = 0; | |
1273 | ||
1274 | skb_reset_transport_header(skb); | |
1275 | __skb_pull(skb, sizeof(*cpl)); | |
1276 | __pskb_trim(skb, ntohs(cpl->len)); | |
1277 | ||
1278 | if (!csk->skb_ulp_lhdr) | |
1279 | csk->skb_ulp_lhdr = skb; | |
1280 | ||
1281 | lskb = csk->skb_ulp_lhdr; | |
1282 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA); | |
1283 | ||
1284 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1285 | "csk 0x%p,%u,0x%lx, skb 0x%p data, 0x%p.\n", | |
1286 | csk, csk->state, csk->flags, skb, lskb); | |
1287 | ||
1288 | __skb_queue_tail(&csk->receive_queue, skb); | |
1289 | spin_unlock_bh(&csk->lock); | |
1290 | return; | |
1291 | ||
1292 | abort_conn: | |
1293 | send_abort_req(csk); | |
1294 | discard: | |
1295 | spin_unlock_bh(&csk->lock); | |
1296 | rel_skb: | |
1297 | __kfree_skb(skb); | |
1298 | } | |
1299 | ||
1300 | static void | |
1301 | cxgb4i_process_ddpvld(struct cxgbi_sock *csk, | |
1302 | struct sk_buff *skb, u32 ddpvld) | |
1303 | { | |
1304 | if (ddpvld & (1 << CPL_RX_DDP_STATUS_HCRC_SHIFT)) { | |
1305 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, hcrc bad 0x%lx.\n", | |
1306 | csk, skb, ddpvld, cxgbi_skcb_flags(skb)); | |
1307 | cxgbi_skcb_set_flag(skb, SKCBF_RX_HCRC_ERR); | |
1308 | } | |
1309 | ||
1310 | if (ddpvld & (1 << CPL_RX_DDP_STATUS_DCRC_SHIFT)) { | |
1311 | pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, dcrc bad 0x%lx.\n", | |
1312 | csk, skb, ddpvld, cxgbi_skcb_flags(skb)); | |
1313 | cxgbi_skcb_set_flag(skb, SKCBF_RX_DCRC_ERR); | |
1314 | } | |
1315 | ||
1316 | if (ddpvld & (1 << CPL_RX_DDP_STATUS_PAD_SHIFT)) { | |
1317 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1318 | "csk 0x%p, lhdr 0x%p, status 0x%x, pad bad.\n", | |
1319 | csk, skb, ddpvld); | |
1320 | cxgbi_skcb_set_flag(skb, SKCBF_RX_PAD_ERR); | |
1321 | } | |
1322 | ||
1323 | if ((ddpvld & (1 << CPL_RX_DDP_STATUS_DDP_SHIFT)) && | |
1324 | !cxgbi_skcb_test_flag(skb, SKCBF_RX_DATA)) { | |
1325 | log_debug(1 << CXGBI_DBG_PDU_RX, | |
1326 | "csk 0x%p, lhdr 0x%p, 0x%x, data ddp'ed.\n", | |
1327 | csk, skb, ddpvld); | |
1328 | cxgbi_skcb_set_flag(skb, SKCBF_RX_DATA_DDPD); | |
1329 | } | |
1330 | } | |
1331 | ||
7b36b6e0 | 1332 | static void do_rx_data_ddp(struct cxgbi_device *cdev, |
1333 | struct sk_buff *skb) | |
1334 | { | |
1335 | struct cxgbi_sock *csk; | |
1336 | struct sk_buff *lskb; | |
1337 | struct cpl_rx_data_ddp *rpl = (struct cpl_rx_data_ddp *)skb->data; | |
1338 | unsigned int tid = GET_TID(rpl); | |
1339 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1340 | struct tid_info *t = lldi->tids; | |
44830d8f | 1341 | u32 ddpvld = be32_to_cpu(rpl->ddpvld); |
7b36b6e0 | 1342 | |
1343 | csk = lookup_tid(t, tid); | |
1344 | if (unlikely(!csk)) { | |
1345 | pr_err("can't find connection for tid %u.\n", tid); | |
1346 | goto rel_skb; | |
1347 | } | |
1348 | ||
1349 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1350 | "csk 0x%p,%u,0x%lx, skb 0x%p,0x%x, lhdr 0x%p.\n", | |
44830d8f | 1351 | csk, csk->state, csk->flags, skb, ddpvld, csk->skb_ulp_lhdr); |
7b36b6e0 | 1352 | |
1353 | spin_lock_bh(&csk->lock); | |
1354 | ||
1355 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1356 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1357 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1358 | csk, csk->state, csk->flags, csk->tid); | |
1359 | if (csk->state != CTP_ABORTING) | |
1360 | goto abort_conn; | |
1361 | else | |
1362 | goto discard; | |
1363 | } | |
1364 | ||
1365 | if (!csk->skb_ulp_lhdr) { | |
1366 | pr_err("tid 0x%x, rcv RX_DATA_DDP w/o pdu bhs.\n", csk->tid); | |
1367 | goto abort_conn; | |
1368 | } | |
1369 | ||
1370 | lskb = csk->skb_ulp_lhdr; | |
1371 | csk->skb_ulp_lhdr = NULL; | |
1372 | ||
7b36b6e0 | 1373 | cxgbi_skcb_rx_ddigest(lskb) = ntohl(rpl->ulp_crc); |
1374 | ||
1375 | if (ntohs(rpl->len) != cxgbi_skcb_rx_pdulen(lskb)) | |
1376 | pr_info("tid 0x%x, RX_DATA_DDP pdulen %u != %u.\n", | |
1377 | csk->tid, ntohs(rpl->len), cxgbi_skcb_rx_pdulen(lskb)); | |
1378 | ||
44830d8f VP |
1379 | cxgb4i_process_ddpvld(csk, lskb, ddpvld); |
1380 | ||
7b36b6e0 | 1381 | log_debug(1 << CXGBI_DBG_PDU_RX, |
1382 | "csk 0x%p, lskb 0x%p, f 0x%lx.\n", | |
1383 | csk, lskb, cxgbi_skcb_flags(lskb)); | |
1384 | ||
e27d6169 | 1385 | cxgbi_skcb_set_flag(lskb, SKCBF_RX_STATUS); |
7b36b6e0 | 1386 | cxgbi_conn_pdu_ready(csk); |
1387 | spin_unlock_bh(&csk->lock); | |
1388 | goto rel_skb; | |
1389 | ||
1390 | abort_conn: | |
1391 | send_abort_req(csk); | |
1392 | discard: | |
1393 | spin_unlock_bh(&csk->lock); | |
1394 | rel_skb: | |
1395 | __kfree_skb(skb); | |
1396 | } | |
1397 | ||
44830d8f VP |
1398 | static void |
1399 | do_rx_iscsi_cmp(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1400 | { | |
1401 | struct cxgbi_sock *csk; | |
1402 | struct cpl_rx_iscsi_cmp *rpl = (struct cpl_rx_iscsi_cmp *)skb->data; | |
1403 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1404 | struct tid_info *t = lldi->tids; | |
1405 | struct sk_buff *data_skb = NULL; | |
1406 | u32 tid = GET_TID(rpl); | |
1407 | u32 ddpvld = be32_to_cpu(rpl->ddpvld); | |
1408 | u32 seq = be32_to_cpu(rpl->seq); | |
1409 | u16 pdu_len_ddp = be16_to_cpu(rpl->pdu_len_ddp); | |
1410 | ||
1411 | csk = lookup_tid(t, tid); | |
1412 | if (unlikely(!csk)) { | |
1413 | pr_err("can't find connection for tid %u.\n", tid); | |
1414 | goto rel_skb; | |
1415 | } | |
1416 | ||
1417 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, | |
1418 | "csk 0x%p,%u,0x%lx, skb 0x%p,0x%x, lhdr 0x%p, len %u, " | |
1419 | "pdu_len_ddp %u, status %u.\n", | |
1420 | csk, csk->state, csk->flags, skb, ddpvld, csk->skb_ulp_lhdr, | |
1421 | ntohs(rpl->len), pdu_len_ddp, rpl->status); | |
1422 | ||
1423 | spin_lock_bh(&csk->lock); | |
1424 | ||
1425 | if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { | |
1426 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1427 | "csk 0x%p,%u,0x%lx,%u, bad state.\n", | |
1428 | csk, csk->state, csk->flags, csk->tid); | |
1429 | ||
1430 | if (csk->state != CTP_ABORTING) | |
1431 | goto abort_conn; | |
1432 | else | |
1433 | goto discard; | |
1434 | } | |
1435 | ||
1436 | cxgbi_skcb_tcp_seq(skb) = seq; | |
1437 | cxgbi_skcb_flags(skb) = 0; | |
1438 | cxgbi_skcb_rx_pdulen(skb) = 0; | |
1439 | ||
1440 | skb_reset_transport_header(skb); | |
1441 | __skb_pull(skb, sizeof(*rpl)); | |
1442 | __pskb_trim(skb, be16_to_cpu(rpl->len)); | |
1443 | ||
1444 | csk->rcv_nxt = seq + pdu_len_ddp; | |
1445 | ||
1446 | if (csk->skb_ulp_lhdr) { | |
1447 | data_skb = skb_peek(&csk->receive_queue); | |
1448 | if (!data_skb || | |
1449 | !cxgbi_skcb_test_flag(data_skb, SKCBF_RX_DATA)) { | |
1450 | pr_err("Error! freelist data not found 0x%p, tid %u\n", | |
1451 | data_skb, tid); | |
1452 | ||
1453 | goto abort_conn; | |
1454 | } | |
1455 | __skb_unlink(data_skb, &csk->receive_queue); | |
1456 | ||
1457 | cxgbi_skcb_set_flag(skb, SKCBF_RX_DATA); | |
1458 | ||
1459 | __skb_queue_tail(&csk->receive_queue, skb); | |
1460 | __skb_queue_tail(&csk->receive_queue, data_skb); | |
1461 | } else { | |
1462 | __skb_queue_tail(&csk->receive_queue, skb); | |
1463 | } | |
1464 | ||
1465 | csk->skb_ulp_lhdr = NULL; | |
1466 | ||
1467 | cxgbi_skcb_set_flag(skb, SKCBF_RX_HDR); | |
1468 | cxgbi_skcb_set_flag(skb, SKCBF_RX_STATUS); | |
1469 | cxgbi_skcb_set_flag(skb, SKCBF_RX_ISCSI_COMPL); | |
1470 | cxgbi_skcb_rx_ddigest(skb) = be32_to_cpu(rpl->ulp_crc); | |
1471 | ||
1472 | cxgb4i_process_ddpvld(csk, skb, ddpvld); | |
1473 | ||
1474 | log_debug(1 << CXGBI_DBG_PDU_RX, "csk 0x%p, skb 0x%p, f 0x%lx.\n", | |
1475 | csk, skb, cxgbi_skcb_flags(skb)); | |
1476 | ||
1477 | cxgbi_conn_pdu_ready(csk); | |
1478 | spin_unlock_bh(&csk->lock); | |
1479 | ||
1480 | return; | |
1481 | ||
1482 | abort_conn: | |
1483 | send_abort_req(csk); | |
1484 | discard: | |
1485 | spin_unlock_bh(&csk->lock); | |
1486 | rel_skb: | |
1487 | __kfree_skb(skb); | |
1488 | } | |
1489 | ||
7b36b6e0 | 1490 | static void do_fw4_ack(struct cxgbi_device *cdev, struct sk_buff *skb) |
1491 | { | |
1492 | struct cxgbi_sock *csk; | |
1493 | struct cpl_fw4_ack *rpl = (struct cpl_fw4_ack *)skb->data; | |
1494 | unsigned int tid = GET_TID(rpl); | |
1495 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1496 | struct tid_info *t = lldi->tids; | |
1497 | ||
1498 | csk = lookup_tid(t, tid); | |
1499 | if (unlikely(!csk)) | |
1500 | pr_err("can't find connection for tid %u.\n", tid); | |
1501 | else { | |
1502 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1503 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1504 | csk, csk->state, csk->flags, csk->tid); | |
1505 | cxgbi_sock_rcv_wr_ack(csk, rpl->credits, ntohl(rpl->snd_una), | |
1506 | rpl->seq_vld); | |
1507 | } | |
1508 | __kfree_skb(skb); | |
1509 | } | |
1510 | ||
1511 | static void do_set_tcb_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) | |
1512 | { | |
1513 | struct cpl_set_tcb_rpl *rpl = (struct cpl_set_tcb_rpl *)skb->data; | |
1514 | unsigned int tid = GET_TID(rpl); | |
1515 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1516 | struct tid_info *t = lldi->tids; | |
1517 | struct cxgbi_sock *csk; | |
1518 | ||
1519 | csk = lookup_tid(t, tid); | |
1520 | if (!csk) | |
1521 | pr_err("can't find conn. for tid %u.\n", tid); | |
1522 | ||
1523 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1524 | "csk 0x%p,%u,%lx,%u, status 0x%x.\n", | |
1525 | csk, csk->state, csk->flags, csk->tid, rpl->status); | |
1526 | ||
1527 | if (rpl->status != CPL_ERR_NONE) | |
1528 | pr_err("csk 0x%p,%u, SET_TCB_RPL status %u.\n", | |
1529 | csk, tid, rpl->status); | |
1530 | ||
1531 | __kfree_skb(skb); | |
1532 | } | |
1533 | ||
1534 | static int alloc_cpls(struct cxgbi_sock *csk) | |
1535 | { | |
24d3f95a | 1536 | csk->cpl_close = alloc_wr(sizeof(struct cpl_close_con_req), |
1537 | 0, GFP_KERNEL); | |
7b36b6e0 | 1538 | if (!csk->cpl_close) |
1539 | return -ENOMEM; | |
1540 | ||
24d3f95a | 1541 | csk->cpl_abort_req = alloc_wr(sizeof(struct cpl_abort_req), |
1542 | 0, GFP_KERNEL); | |
7b36b6e0 | 1543 | if (!csk->cpl_abort_req) |
1544 | goto free_cpls; | |
1545 | ||
24d3f95a | 1546 | csk->cpl_abort_rpl = alloc_wr(sizeof(struct cpl_abort_rpl), |
1547 | 0, GFP_KERNEL); | |
7b36b6e0 | 1548 | if (!csk->cpl_abort_rpl) |
1549 | goto free_cpls; | |
1550 | return 0; | |
1551 | ||
1552 | free_cpls: | |
1553 | cxgbi_sock_free_cpl_skbs(csk); | |
1554 | return -ENOMEM; | |
1555 | } | |
1556 | ||
1557 | static inline void l2t_put(struct cxgbi_sock *csk) | |
1558 | { | |
1559 | if (csk->l2t) { | |
1560 | cxgb4_l2t_release(csk->l2t); | |
1561 | csk->l2t = NULL; | |
1562 | cxgbi_sock_put(csk); | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | static void release_offload_resources(struct cxgbi_sock *csk) | |
1567 | { | |
1568 | struct cxgb4_lld_info *lldi; | |
211a84e3 AB |
1569 | #if IS_ENABLED(CONFIG_IPV6) |
1570 | struct net_device *ndev = csk->cdev->ports[csk->port_id]; | |
1571 | #endif | |
7b36b6e0 | 1572 | |
1573 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1574 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1575 | csk, csk->state, csk->flags, csk->tid); | |
1576 | ||
1577 | cxgbi_sock_free_cpl_skbs(csk); | |
1578 | if (csk->wr_cred != csk->wr_max_cred) { | |
1579 | cxgbi_sock_purge_wr_queue(csk); | |
1580 | cxgbi_sock_reset_wr_list(csk); | |
1581 | } | |
1582 | ||
1583 | l2t_put(csk); | |
211a84e3 AB |
1584 | #if IS_ENABLED(CONFIG_IPV6) |
1585 | if (csk->csk_family == AF_INET6) | |
1586 | cxgb4_clip_release(ndev, | |
1587 | (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1588 | #endif | |
1589 | ||
7b36b6e0 | 1590 | if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) |
1591 | free_atid(csk); | |
1592 | else if (cxgbi_sock_flag(csk, CTPF_HAS_TID)) { | |
1593 | lldi = cxgbi_cdev_priv(csk->cdev); | |
1dec4cec GG |
1594 | cxgb4_remove_tid(lldi->tids, 0, csk->tid, |
1595 | csk->csk_family); | |
7b36b6e0 | 1596 | cxgbi_sock_clear_flag(csk, CTPF_HAS_TID); |
1597 | cxgbi_sock_put(csk); | |
1598 | } | |
1599 | csk->dst = NULL; | |
7b36b6e0 | 1600 | } |
1601 | ||
1602 | static int init_act_open(struct cxgbi_sock *csk) | |
1603 | { | |
1604 | struct cxgbi_device *cdev = csk->cdev; | |
1605 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1606 | struct net_device *ndev = cdev->ports[csk->port_id]; | |
7b36b6e0 | 1607 | struct sk_buff *skb = NULL; |
759a0cc5 AB |
1608 | struct neighbour *n = NULL; |
1609 | void *daddr; | |
7b36b6e0 | 1610 | unsigned int step; |
6c9e2770 | 1611 | unsigned int rxq_idx; |
759a0cc5 | 1612 | unsigned int size, size6; |
81daf10c KX |
1613 | unsigned int linkspeed; |
1614 | unsigned int rcv_winf, snd_winf; | |
7b36b6e0 | 1615 | |
1616 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1617 | "csk 0x%p,%u,0x%lx,%u.\n", | |
1618 | csk, csk->state, csk->flags, csk->tid); | |
1619 | ||
759a0cc5 AB |
1620 | if (csk->csk_family == AF_INET) |
1621 | daddr = &csk->daddr.sin_addr.s_addr; | |
e81fbf6c AB |
1622 | #if IS_ENABLED(CONFIG_IPV6) |
1623 | else if (csk->csk_family == AF_INET6) | |
759a0cc5 | 1624 | daddr = &csk->daddr6.sin6_addr; |
e81fbf6c AB |
1625 | #endif |
1626 | else { | |
1627 | pr_err("address family 0x%x not supported\n", csk->csk_family); | |
1628 | goto rel_resource; | |
1629 | } | |
759a0cc5 AB |
1630 | |
1631 | n = dst_neigh_lookup(csk->dst, daddr); | |
1632 | ||
1633 | if (!n) { | |
1634 | pr_err("%s, can't get neighbour of csk->dst.\n", ndev->name); | |
1635 | goto rel_resource; | |
1636 | } | |
1637 | ||
71eb2ac5 VP |
1638 | if (!(n->nud_state & NUD_VALID)) |
1639 | neigh_event_send(n, NULL); | |
1640 | ||
7b36b6e0 | 1641 | csk->atid = cxgb4_alloc_atid(lldi->tids, csk); |
1642 | if (csk->atid < 0) { | |
1643 | pr_err("%s, NO atid available.\n", ndev->name); | |
338be072 | 1644 | goto rel_resource_without_clip; |
7b36b6e0 | 1645 | } |
1646 | cxgbi_sock_set_flag(csk, CTPF_HAS_ATID); | |
1647 | cxgbi_sock_get(csk); | |
1648 | ||
51e059bd | 1649 | csk->l2t = cxgb4_l2t_get(lldi->l2t, n, ndev, 0); |
7b36b6e0 | 1650 | if (!csk->l2t) { |
1651 | pr_err("%s, cannot alloc l2t.\n", ndev->name); | |
211a84e3 | 1652 | goto rel_resource_without_clip; |
7b36b6e0 | 1653 | } |
1654 | cxgbi_sock_get(csk); | |
1655 | ||
211a84e3 AB |
1656 | #if IS_ENABLED(CONFIG_IPV6) |
1657 | if (csk->csk_family == AF_INET6) | |
1658 | cxgb4_clip_get(ndev, (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1659 | #endif | |
1660 | ||
586be7cb | 1661 | if (is_t4(lldi->adapter_type)) { |
759a0cc5 AB |
1662 | size = sizeof(struct cpl_act_open_req); |
1663 | size6 = sizeof(struct cpl_act_open_req6); | |
586be7cb | 1664 | } else if (is_t5(lldi->adapter_type)) { |
759a0cc5 AB |
1665 | size = sizeof(struct cpl_t5_act_open_req); |
1666 | size6 = sizeof(struct cpl_t5_act_open_req6); | |
586be7cb VP |
1667 | } else { |
1668 | size = sizeof(struct cpl_t6_act_open_req); | |
1669 | size6 = sizeof(struct cpl_t6_act_open_req6); | |
759a0cc5 AB |
1670 | } |
1671 | ||
1672 | if (csk->csk_family == AF_INET) | |
1673 | skb = alloc_wr(size, 0, GFP_NOIO); | |
f42bb57c | 1674 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
1675 | else |
1676 | skb = alloc_wr(size6, 0, GFP_NOIO); | |
f42bb57c | 1677 | #endif |
759a0cc5 | 1678 | |
7b36b6e0 | 1679 | if (!skb) |
1680 | goto rel_resource; | |
1681 | skb->sk = (struct sock *)csk; | |
1682 | t4_set_arp_err_handler(skb, csk, cxgbi_sock_act_open_req_arp_failure); | |
1683 | ||
1684 | if (!csk->mtu) | |
1685 | csk->mtu = dst_mtu(csk->dst); | |
1686 | cxgb4_best_mtu(lldi->mtus, csk->mtu, &csk->mss_idx); | |
1687 | csk->tx_chan = cxgb4_port_chan(ndev); | |
e0eed8ab VP |
1688 | csk->smac_idx = cxgb4_tp_smt_idx(lldi->adapter_type, |
1689 | cxgb4_port_viid(ndev)); | |
7b36b6e0 | 1690 | step = lldi->ntxq / lldi->nchan; |
1691 | csk->txq_idx = cxgb4_port_idx(ndev) * step; | |
1692 | step = lldi->nrxq / lldi->nchan; | |
6c9e2770 VP |
1693 | rxq_idx = (cxgb4_port_idx(ndev) * step) + (cdev->rxq_idx_cntr % step); |
1694 | cdev->rxq_idx_cntr++; | |
1695 | csk->rss_qid = lldi->rxq_ids[rxq_idx]; | |
81daf10c KX |
1696 | linkspeed = ((struct port_info *)netdev_priv(ndev))->link_cfg.speed; |
1697 | csk->snd_win = cxgb4i_snd_win; | |
1698 | csk->rcv_win = cxgb4i_rcv_win; | |
1699 | if (cxgb4i_rcv_win <= 0) { | |
1700 | csk->rcv_win = CXGB4I_DEFAULT_10G_RCV_WIN; | |
1701 | rcv_winf = linkspeed / SPEED_10000; | |
1702 | if (rcv_winf) | |
1703 | csk->rcv_win *= rcv_winf; | |
1704 | } | |
1705 | if (cxgb4i_snd_win <= 0) { | |
1706 | csk->snd_win = CXGB4I_DEFAULT_10G_SND_WIN; | |
1707 | snd_winf = linkspeed / SPEED_10000; | |
1708 | if (snd_winf) | |
1709 | csk->snd_win *= snd_winf; | |
1710 | } | |
759a0cc5 AB |
1711 | csk->wr_cred = lldi->wr_cred - |
1712 | DIV_ROUND_UP(sizeof(struct cpl_abort_req), 16); | |
1713 | csk->wr_max_cred = csk->wr_cred; | |
7b36b6e0 | 1714 | csk->wr_una_cred = 0; |
1715 | cxgbi_sock_reset_wr_list(csk); | |
1716 | csk->err = 0; | |
7b36b6e0 | 1717 | |
759a0cc5 AB |
1718 | pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u,%u,%u, mtu %u,%u, smac %u.\n", |
1719 | (&csk->saddr), (&csk->daddr), csk, csk->state, | |
1720 | csk->flags, csk->tx_chan, csk->txq_idx, csk->rss_qid, | |
1721 | csk->mtu, csk->mss_idx, csk->smac_idx); | |
1722 | ||
1723 | /* must wait for either a act_open_rpl or act_open_establish */ | |
1fe1fdb0 VP |
1724 | if (!try_module_get(cdev->owner)) { |
1725 | pr_err("%s, try_module_get failed.\n", ndev->name); | |
1726 | goto rel_resource; | |
1727 | } | |
1728 | ||
7b36b6e0 | 1729 | cxgbi_sock_set_state(csk, CTP_ACTIVE_OPEN); |
759a0cc5 AB |
1730 | if (csk->csk_family == AF_INET) |
1731 | send_act_open_req(csk, skb, csk->l2t); | |
f42bb57c | 1732 | #if IS_ENABLED(CONFIG_IPV6) |
759a0cc5 AB |
1733 | else |
1734 | send_act_open_req6(csk, skb, csk->l2t); | |
f42bb57c | 1735 | #endif |
c4737377 | 1736 | neigh_release(n); |
759a0cc5 | 1737 | |
7b36b6e0 | 1738 | return 0; |
1739 | ||
1740 | rel_resource: | |
211a84e3 AB |
1741 | #if IS_ENABLED(CONFIG_IPV6) |
1742 | if (csk->csk_family == AF_INET6) | |
1743 | cxgb4_clip_release(ndev, | |
1744 | (const u32 *)&csk->saddr6.sin6_addr, 1); | |
1745 | #endif | |
1746 | rel_resource_without_clip: | |
c4737377 DM |
1747 | if (n) |
1748 | neigh_release(n); | |
7b36b6e0 | 1749 | if (skb) |
1750 | __kfree_skb(skb); | |
1751 | return -EINVAL; | |
1752 | } | |
1753 | ||
4665bdd5 | 1754 | static cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = { |
7b36b6e0 | 1755 | [CPL_ACT_ESTABLISH] = do_act_establish, |
1756 | [CPL_ACT_OPEN_RPL] = do_act_open_rpl, | |
1757 | [CPL_PEER_CLOSE] = do_peer_close, | |
1758 | [CPL_ABORT_REQ_RSS] = do_abort_req_rss, | |
1759 | [CPL_ABORT_RPL_RSS] = do_abort_rpl_rss, | |
1760 | [CPL_CLOSE_CON_RPL] = do_close_con_rpl, | |
1761 | [CPL_FW4_ACK] = do_fw4_ack, | |
1762 | [CPL_ISCSI_HDR] = do_rx_iscsi_hdr, | |
44830d8f | 1763 | [CPL_ISCSI_DATA] = do_rx_iscsi_data, |
7b36b6e0 | 1764 | [CPL_SET_TCB_RPL] = do_set_tcb_rpl, |
1765 | [CPL_RX_DATA_DDP] = do_rx_data_ddp, | |
3bd3e8bf | 1766 | [CPL_RX_ISCSI_DDP] = do_rx_data_ddp, |
44830d8f | 1767 | [CPL_RX_ISCSI_CMP] = do_rx_iscsi_cmp, |
f7bcd2e1 | 1768 | [CPL_RX_DATA] = do_rx_data, |
7b36b6e0 | 1769 | }; |
1770 | ||
4665bdd5 | 1771 | static int cxgb4i_ofld_init(struct cxgbi_device *cdev) |
7b36b6e0 | 1772 | { |
1773 | int rc; | |
1774 | ||
1775 | if (cxgb4i_max_connect > CXGB4I_MAX_CONN) | |
1776 | cxgb4i_max_connect = CXGB4I_MAX_CONN; | |
1777 | ||
1778 | rc = cxgbi_device_portmap_create(cdev, cxgb4i_sport_base, | |
1779 | cxgb4i_max_connect); | |
1780 | if (rc < 0) | |
1781 | return rc; | |
1782 | ||
1783 | cdev->csk_release_offload_resources = release_offload_resources; | |
1784 | cdev->csk_push_tx_frames = push_tx_frames; | |
1785 | cdev->csk_send_abort_req = send_abort_req; | |
1786 | cdev->csk_send_close_req = send_close_req; | |
1787 | cdev->csk_send_rx_credits = send_rx_credits; | |
1788 | cdev->csk_alloc_cpls = alloc_cpls; | |
1789 | cdev->csk_init_act_open = init_act_open; | |
1790 | ||
1791 | pr_info("cdev 0x%p, offload up, added.\n", cdev); | |
1792 | return 0; | |
1793 | } | |
1794 | ||
71f7a00b VP |
1795 | static inline void |
1796 | ulp_mem_io_set_hdr(struct cxgbi_device *cdev, | |
1797 | struct ulp_mem_io *req, | |
1798 | unsigned int wr_len, unsigned int dlen, | |
1799 | unsigned int pm_addr, | |
1800 | int tid) | |
1801 | { | |
1802 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); | |
1803 | struct ulptx_idata *idata = (struct ulptx_idata *)(req + 1); | |
1804 | ||
1805 | INIT_ULPTX_WR(req, wr_len, 0, tid); | |
1806 | req->wr.wr_hi = htonl(FW_WR_OP_V(FW_ULPTX_WR) | | |
1807 | FW_WR_ATOMIC_V(0)); | |
1808 | req->cmd = htonl(ULPTX_CMD_V(ULP_TX_MEM_WRITE) | | |
1809 | ULP_MEMIO_ORDER_V(is_t4(lldi->adapter_type)) | | |
1810 | T5_ULP_MEMIO_IMM_V(!is_t4(lldi->adapter_type))); | |
1811 | req->dlen = htonl(ULP_MEMIO_DATA_LEN_V(dlen >> 5)); | |
1812 | req->lock_addr = htonl(ULP_MEMIO_ADDR_V(pm_addr >> 5)); | |
1813 | req->len16 = htonl(DIV_ROUND_UP(wr_len - sizeof(req->wr), 16)); | |
1814 | ||
1815 | idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM)); | |
1816 | idata->len = htonl(dlen); | |
1817 | } | |
1818 | ||
1819 | static struct sk_buff * | |
1820 | ddp_ppod_init_idata(struct cxgbi_device *cdev, | |
1821 | struct cxgbi_ppm *ppm, | |
1822 | unsigned int idx, unsigned int npods, | |
1823 | unsigned int tid) | |
1824 | { | |
1825 | unsigned int pm_addr = (idx << PPOD_SIZE_SHIFT) + ppm->llimit; | |
1826 | unsigned int dlen = npods << PPOD_SIZE_SHIFT; | |
1827 | unsigned int wr_len = roundup(sizeof(struct ulp_mem_io) + | |
1828 | sizeof(struct ulptx_idata) + dlen, 16); | |
1829 | struct sk_buff *skb = alloc_wr(wr_len, 0, GFP_ATOMIC); | |
1830 | ||
1831 | if (!skb) { | |
1832 | pr_err("%s: %s idx %u, npods %u, OOM.\n", | |
1833 | __func__, ppm->ndev->name, idx, npods); | |
1834 | return NULL; | |
1835 | } | |
1836 | ||
1837 | ulp_mem_io_set_hdr(cdev, (struct ulp_mem_io *)skb->head, wr_len, dlen, | |
1838 | pm_addr, tid); | |
1839 | ||
1840 | return skb; | |
1841 | } | |
1842 | ||
1843 | static int ddp_ppod_write_idata(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, | |
1844 | struct cxgbi_task_tag_info *ttinfo, | |
1845 | unsigned int idx, unsigned int npods, | |
1846 | struct scatterlist **sg_pp, | |
1847 | unsigned int *sg_off) | |
1848 | { | |
1849 | struct cxgbi_device *cdev = csk->cdev; | |
1850 | struct sk_buff *skb = ddp_ppod_init_idata(cdev, ppm, idx, npods, | |
1851 | csk->tid); | |
1852 | struct ulp_mem_io *req; | |
1853 | struct ulptx_idata *idata; | |
1854 | struct cxgbi_pagepod *ppod; | |
1855 | int i; | |
1856 | ||
1857 | if (!skb) | |
1858 | return -ENOMEM; | |
1859 | ||
1860 | req = (struct ulp_mem_io *)skb->head; | |
1861 | idata = (struct ulptx_idata *)(req + 1); | |
1862 | ppod = (struct cxgbi_pagepod *)(idata + 1); | |
1863 | ||
1864 | for (i = 0; i < npods; i++, ppod++) | |
1865 | cxgbi_ddp_set_one_ppod(ppod, ttinfo, sg_pp, sg_off); | |
1866 | ||
1867 | cxgbi_skcb_set_flag(skb, SKCBF_TX_MEM_WRITE); | |
1868 | cxgbi_skcb_set_flag(skb, SKCBF_TX_FLAG_COMPL); | |
1869 | set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); | |
1870 | ||
1871 | spin_lock_bh(&csk->lock); | |
1872 | cxgbi_sock_skb_entail(csk, skb); | |
1873 | spin_unlock_bh(&csk->lock); | |
1874 | ||
1875 | return 0; | |
1876 | } | |
1877 | ||
1878 | static int ddp_set_map(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, | |
1879 | struct cxgbi_task_tag_info *ttinfo) | |
1880 | { | |
1881 | unsigned int pidx = ttinfo->idx; | |
1882 | unsigned int npods = ttinfo->npods; | |
1883 | unsigned int i, cnt; | |
1884 | int err = 0; | |
1885 | struct scatterlist *sg = ttinfo->sgl; | |
1886 | unsigned int offset = 0; | |
1887 | ||
1888 | ttinfo->cid = csk->port_id; | |
1889 | ||
1890 | for (i = 0; i < npods; i += cnt, pidx += cnt) { | |
1891 | cnt = npods - i; | |
1892 | ||
1893 | if (cnt > ULPMEM_IDATA_MAX_NPPODS) | |
1894 | cnt = ULPMEM_IDATA_MAX_NPPODS; | |
1895 | err = ddp_ppod_write_idata(ppm, csk, ttinfo, pidx, cnt, | |
1896 | &sg, &offset); | |
1897 | if (err < 0) | |
1898 | break; | |
1899 | } | |
1900 | ||
1901 | return err; | |
1902 | } | |
1903 | ||
7b36b6e0 | 1904 | static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, |
1905 | int pg_idx, bool reply) | |
1906 | { | |
1907 | struct sk_buff *skb; | |
1908 | struct cpl_set_tcb_field *req; | |
7b36b6e0 | 1909 | |
e27d6169 | 1910 | if (!pg_idx || pg_idx >= DDP_PGIDX_MAX) |
7b36b6e0 | 1911 | return 0; |
1912 | ||
24d3f95a | 1913 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
7b36b6e0 | 1914 | if (!skb) |
1915 | return -ENOMEM; | |
1916 | ||
e27d6169 | 1917 | /* set up ulp page size */ |
7b36b6e0 | 1918 | req = (struct cpl_set_tcb_field *)skb->head; |
1919 | INIT_TP_WR(req, csk->tid); | |
1920 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); | |
bdc590b9 | 1921 | req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); |
e27d6169 | 1922 | req->word_cookie = htons(0); |
1923 | req->mask = cpu_to_be64(0x3 << 8); | |
1924 | req->val = cpu_to_be64(pg_idx << 8); | |
7b36b6e0 | 1925 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
1926 | ||
1927 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1928 | "csk 0x%p, tid 0x%x, pg_idx %u.\n", csk, csk->tid, pg_idx); | |
1929 | ||
1930 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
1931 | return 0; | |
1932 | } | |
1933 | ||
1934 | static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, | |
1935 | int hcrc, int dcrc, int reply) | |
1936 | { | |
1937 | struct sk_buff *skb; | |
1938 | struct cpl_set_tcb_field *req; | |
7b36b6e0 | 1939 | |
e27d6169 | 1940 | if (!hcrc && !dcrc) |
1941 | return 0; | |
7b36b6e0 | 1942 | |
24d3f95a | 1943 | skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); |
7b36b6e0 | 1944 | if (!skb) |
1945 | return -ENOMEM; | |
1946 | ||
1947 | csk->hcrc_len = (hcrc ? 4 : 0); | |
1948 | csk->dcrc_len = (dcrc ? 4 : 0); | |
e27d6169 | 1949 | /* set up ulp submode */ |
7b36b6e0 | 1950 | req = (struct cpl_set_tcb_field *)skb->head; |
1951 | INIT_TP_WR(req, tid); | |
1952 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); | |
bdc590b9 | 1953 | req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); |
e27d6169 | 1954 | req->word_cookie = htons(0); |
1955 | req->mask = cpu_to_be64(0x3 << 4); | |
1956 | req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) | | |
1957 | (dcrc ? ULP_CRC_DATA : 0)) << 4); | |
7b36b6e0 | 1958 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); |
1959 | ||
1960 | log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, | |
1961 | "csk 0x%p, tid 0x%x, crc %d,%d.\n", csk, csk->tid, hcrc, dcrc); | |
1962 | ||
1963 | cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); | |
1964 | return 0; | |
1965 | } | |
1966 | ||
71f7a00b VP |
1967 | static struct cxgbi_ppm *cdev2ppm(struct cxgbi_device *cdev) |
1968 | { | |
1969 | return (struct cxgbi_ppm *)(*((struct cxgb4_lld_info *) | |
1970 | (cxgbi_cdev_priv(cdev)))->iscsi_ppm); | |
1971 | } | |
1972 | ||
7b36b6e0 | 1973 | static int cxgb4i_ddp_init(struct cxgbi_device *cdev) |
1974 | { | |
71f7a00b VP |
1975 | struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); |
1976 | struct net_device *ndev = cdev->ports[0]; | |
1977 | struct cxgbi_tag_format tformat; | |
1978 | unsigned int ppmax; | |
1979 | int i; | |
1980 | ||
1981 | if (!lldi->vr->iscsi.size) { | |
1982 | pr_warn("%s, iscsi NOT enabled, check config!\n", ndev->name); | |
1983 | return -EACCES; | |
1984 | } | |
1985 | ||
1986 | cdev->flags |= CXGBI_FLAG_USE_PPOD_OFLDQ; | |
1987 | ppmax = lldi->vr->iscsi.size >> PPOD_SIZE_SHIFT; | |
1988 | ||
1989 | memset(&tformat, 0, sizeof(struct cxgbi_tag_format)); | |
1990 | for (i = 0; i < 4; i++) | |
1991 | tformat.pgsz_order[i] = (lldi->iscsi_pgsz_order >> (i << 3)) | |
1992 | & 0xF; | |
1993 | cxgbi_tagmask_check(lldi->iscsi_tagmask, &tformat); | |
1994 | ||
1995 | cxgbi_ddp_ppm_setup(lldi->iscsi_ppm, cdev, &tformat, ppmax, | |
1996 | lldi->iscsi_llimit, lldi->vr->iscsi.start, 2); | |
1997 | ||
7b36b6e0 | 1998 | cdev->csk_ddp_setup_digest = ddp_setup_conn_digest; |
1999 | cdev->csk_ddp_setup_pgidx = ddp_setup_conn_pgidx; | |
71f7a00b VP |
2000 | cdev->csk_ddp_set_map = ddp_set_map; |
2001 | cdev->tx_max_size = min_t(unsigned int, ULP2_MAX_PDU_PAYLOAD, | |
2002 | lldi->iscsi_iolen - ISCSI_PDU_NONPAYLOAD_LEN); | |
2003 | cdev->rx_max_size = min_t(unsigned int, ULP2_MAX_PDU_PAYLOAD, | |
2004 | lldi->iscsi_iolen - ISCSI_PDU_NONPAYLOAD_LEN); | |
2005 | cdev->cdev2ppm = cdev2ppm; | |
2006 | ||
7b36b6e0 | 2007 | return 0; |
2008 | } | |
2009 | ||
2010 | static void *t4_uld_add(const struct cxgb4_lld_info *lldi) | |
2011 | { | |
2012 | struct cxgbi_device *cdev; | |
2013 | struct port_info *pi; | |
2014 | int i, rc; | |
2015 | ||
2016 | cdev = cxgbi_device_register(sizeof(*lldi), lldi->nports); | |
2017 | if (!cdev) { | |
2018 | pr_info("t4 device 0x%p, register failed.\n", lldi); | |
2019 | return NULL; | |
2020 | } | |
2021 | pr_info("0x%p,0x%x, ports %u,%s, chan %u, q %u,%u, wr %u.\n", | |
2022 | cdev, lldi->adapter_type, lldi->nports, | |
2023 | lldi->ports[0]->name, lldi->nchan, lldi->ntxq, | |
2024 | lldi->nrxq, lldi->wr_cred); | |
2025 | for (i = 0; i < lldi->nrxq; i++) | |
2026 | log_debug(1 << CXGBI_DBG_DEV, | |
2027 | "t4 0x%p, rxq id #%d: %u.\n", | |
2028 | cdev, i, lldi->rxq_ids[i]); | |
2029 | ||
2030 | memcpy(cxgbi_cdev_priv(cdev), lldi, sizeof(*lldi)); | |
2031 | cdev->flags = CXGBI_FLAG_DEV_T4; | |
2032 | cdev->pdev = lldi->pdev; | |
2033 | cdev->ports = lldi->ports; | |
2034 | cdev->nports = lldi->nports; | |
2035 | cdev->mtus = lldi->mtus; | |
2036 | cdev->nmtus = NMTUS; | |
586be7cb VP |
2037 | cdev->rx_credit_thres = (CHELSIO_CHIP_VERSION(lldi->adapter_type) <= |
2038 | CHELSIO_T5) ? cxgb4i_rx_credit_thres : 0; | |
7b36b6e0 | 2039 | cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN; |
2040 | cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr); | |
2041 | cdev->itp = &cxgb4i_iscsi_transport; | |
1fe1fdb0 | 2042 | cdev->owner = THIS_MODULE; |
7b36b6e0 | 2043 | |
d7990b0c AB |
2044 | cdev->pfvf = FW_VIID_PFN_G(cxgb4_port_viid(lldi->ports[0])) |
2045 | << FW_VIID_PFN_S; | |
e27d6169 | 2046 | pr_info("cdev 0x%p,%s, pfvf %u.\n", |
2047 | cdev, lldi->ports[0]->name, cdev->pfvf); | |
2048 | ||
7b36b6e0 | 2049 | rc = cxgb4i_ddp_init(cdev); |
2050 | if (rc) { | |
2051 | pr_info("t4 0x%p ddp init failed.\n", cdev); | |
2052 | goto err_out; | |
2053 | } | |
2054 | rc = cxgb4i_ofld_init(cdev); | |
2055 | if (rc) { | |
2056 | pr_info("t4 0x%p ofld init failed.\n", cdev); | |
2057 | goto err_out; | |
2058 | } | |
2059 | ||
2060 | rc = cxgbi_hbas_add(cdev, CXGB4I_MAX_LUN, CXGBI_MAX_CONN, | |
2061 | &cxgb4i_host_template, cxgb4i_stt); | |
2062 | if (rc) | |
2063 | goto err_out; | |
2064 | ||
2065 | for (i = 0; i < cdev->nports; i++) { | |
2066 | pi = netdev_priv(lldi->ports[i]); | |
2067 | cdev->hbas[i]->port_id = pi->port_id; | |
2068 | } | |
2069 | return cdev; | |
2070 | ||
2071 | err_out: | |
2072 | cxgbi_device_unregister(cdev); | |
2073 | return ERR_PTR(-ENOMEM); | |
2074 | } | |
2075 | ||
2076 | #define RX_PULL_LEN 128 | |
2077 | static int t4_uld_rx_handler(void *handle, const __be64 *rsp, | |
2078 | const struct pkt_gl *pgl) | |
2079 | { | |
2080 | const struct cpl_act_establish *rpl; | |
2081 | struct sk_buff *skb; | |
2082 | unsigned int opc; | |
2083 | struct cxgbi_device *cdev = handle; | |
2084 | ||
2085 | if (pgl == NULL) { | |
2086 | unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; | |
2087 | ||
24d3f95a | 2088 | skb = alloc_wr(len, 0, GFP_ATOMIC); |
7b36b6e0 | 2089 | if (!skb) |
2090 | goto nomem; | |
2091 | skb_copy_to_linear_data(skb, &rsp[1], len); | |
2092 | } else { | |
2093 | if (unlikely(*(u8 *)rsp != *(u8 *)pgl->va)) { | |
2094 | pr_info("? FL 0x%p,RSS%#llx,FL %#llx,len %u.\n", | |
2095 | pgl->va, be64_to_cpu(*rsp), | |
2096 | be64_to_cpu(*(u64 *)pgl->va), | |
2097 | pgl->tot_len); | |
2098 | return 0; | |
2099 | } | |
2100 | skb = cxgb4_pktgl_to_skb(pgl, RX_PULL_LEN, RX_PULL_LEN); | |
2101 | if (unlikely(!skb)) | |
2102 | goto nomem; | |
2103 | } | |
2104 | ||
2105 | rpl = (struct cpl_act_establish *)skb->data; | |
2106 | opc = rpl->ot.opcode; | |
2107 | log_debug(1 << CXGBI_DBG_TOE, | |
2108 | "cdev %p, opcode 0x%x(0x%x,0x%x), skb %p.\n", | |
2109 | cdev, opc, rpl->ot.opcode_tid, ntohl(rpl->ot.opcode_tid), skb); | |
2110 | if (cxgb4i_cplhandlers[opc]) | |
2111 | cxgb4i_cplhandlers[opc](cdev, skb); | |
2112 | else { | |
2113 | pr_err("No handler for opcode 0x%x.\n", opc); | |
2114 | __kfree_skb(skb); | |
2115 | } | |
2116 | return 0; | |
2117 | nomem: | |
2118 | log_debug(1 << CXGBI_DBG_TOE, "OOM bailing out.\n"); | |
2119 | return 1; | |
2120 | } | |
2121 | ||
2122 | static int t4_uld_state_change(void *handle, enum cxgb4_state state) | |
2123 | { | |
2124 | struct cxgbi_device *cdev = handle; | |
2125 | ||
2126 | switch (state) { | |
2127 | case CXGB4_STATE_UP: | |
2128 | pr_info("cdev 0x%p, UP.\n", cdev); | |
7b36b6e0 | 2129 | break; |
2130 | case CXGB4_STATE_START_RECOVERY: | |
2131 | pr_info("cdev 0x%p, RECOVERY.\n", cdev); | |
2132 | /* close all connections */ | |
2133 | break; | |
2134 | case CXGB4_STATE_DOWN: | |
2135 | pr_info("cdev 0x%p, DOWN.\n", cdev); | |
2136 | break; | |
2137 | case CXGB4_STATE_DETACH: | |
2138 | pr_info("cdev 0x%p, DETACH.\n", cdev); | |
c3b331a3 | 2139 | cxgbi_device_unregister(cdev); |
7b36b6e0 | 2140 | break; |
2141 | default: | |
2142 | pr_info("cdev 0x%p, unknown state %d.\n", cdev, state); | |
2143 | break; | |
2144 | } | |
2145 | return 0; | |
2146 | } | |
2147 | ||
2148 | static int __init cxgb4i_init_module(void) | |
2149 | { | |
2150 | int rc; | |
2151 | ||
2152 | printk(KERN_INFO "%s", version); | |
2153 | ||
2154 | rc = cxgbi_iscsi_init(&cxgb4i_iscsi_transport, &cxgb4i_stt); | |
2155 | if (rc < 0) | |
2156 | return rc; | |
2157 | cxgb4_register_uld(CXGB4_ULD_ISCSI, &cxgb4i_uld_info); | |
759a0cc5 | 2158 | |
7b36b6e0 | 2159 | return 0; |
2160 | } | |
2161 | ||
2162 | static void __exit cxgb4i_exit_module(void) | |
2163 | { | |
2164 | cxgb4_unregister_uld(CXGB4_ULD_ISCSI); | |
2165 | cxgbi_device_unregister_all(CXGBI_FLAG_DEV_T4); | |
2166 | cxgbi_iscsi_cleanup(&cxgb4i_iscsi_transport, &cxgb4i_stt); | |
2167 | } | |
2168 | ||
2169 | module_init(cxgb4i_init_module); | |
2170 | module_exit(cxgb4i_exit_module); |