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3c2d774c | 1 | /* |
5647263c | 2 | * Copyright (c) 2006 - 2014 Intel Corporation. All rights reserved. |
3c2d774c GS |
3 | * |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | * | |
32 | */ | |
33 | ||
34 | ||
35 | #define TCPOPT_TIMESTAMP 8 | |
36 | ||
60063497 | 37 | #include <linux/atomic.h> |
3c2d774c GS |
38 | #include <linux/skbuff.h> |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
41 | #include <linux/init.h> | |
42 | #include <linux/if_arp.h> | |
f2b2b59b | 43 | #include <linux/if_vlan.h> |
3c2d774c GS |
44 | #include <linux/notifier.h> |
45 | #include <linux/net.h> | |
46 | #include <linux/types.h> | |
47 | #include <linux/timer.h> | |
48 | #include <linux/time.h> | |
49 | #include <linux/delay.h> | |
50 | #include <linux/etherdevice.h> | |
51 | #include <linux/netdevice.h> | |
52 | #include <linux/random.h> | |
53 | #include <linux/list.h> | |
54 | #include <linux/threads.h> | |
d2fa9b26 | 55 | #include <linux/highmem.h> |
5a0e3ad6 | 56 | #include <linux/slab.h> |
7191a0a1 | 57 | #include <net/arp.h> |
3c2d774c GS |
58 | #include <net/neighbour.h> |
59 | #include <net/route.h> | |
60 | #include <net/ip_fib.h> | |
c11470f9 | 61 | #include <net/tcp.h> |
5647263c | 62 | #include <linux/fcntl.h> |
3c2d774c GS |
63 | |
64 | #include "nes.h" | |
65 | ||
66 | u32 cm_packets_sent; | |
67 | u32 cm_packets_bounced; | |
68 | u32 cm_packets_dropped; | |
69 | u32 cm_packets_retrans; | |
70 | u32 cm_packets_created; | |
71 | u32 cm_packets_received; | |
6e10d2e4 FL |
72 | atomic_t cm_listens_created; |
73 | atomic_t cm_listens_destroyed; | |
3c2d774c GS |
74 | u32 cm_backlog_drops; |
75 | atomic_t cm_loopbacks; | |
76 | atomic_t cm_nodes_created; | |
77 | atomic_t cm_nodes_destroyed; | |
78 | atomic_t cm_accel_dropped_pkts; | |
79 | atomic_t cm_resets_recvd; | |
80 | ||
615eb715 TN |
81 | static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *); |
82 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *); | |
3c2d774c | 83 | static int mini_cm_del_listen(struct nes_cm_core *, struct nes_cm_listener *); |
615eb715 | 84 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *, struct nes_vnic *, u16, void *, struct nes_cm_info *); |
6492cdf3 | 85 | static int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *); |
615eb715 TN |
86 | static int mini_cm_accept(struct nes_cm_core *, struct nes_cm_node *); |
87 | static int mini_cm_reject(struct nes_cm_core *, struct nes_cm_node *); | |
88 | static int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, struct sk_buff *); | |
1a855fbf RD |
89 | static int mini_cm_dealloc_core(struct nes_cm_core *); |
90 | static int mini_cm_get(struct nes_cm_core *); | |
91 | static int mini_cm_set(struct nes_cm_core *, u32, u32); | |
6492cdf3 | 92 | |
615eb715 | 93 | static void form_cm_frame(struct sk_buff *, struct nes_cm_node *, void *, u32, void *, u32, u8); |
6492cdf3 FL |
94 | static int add_ref_cm_node(struct nes_cm_node *); |
95 | static int rem_ref_cm_node(struct nes_cm_core *, struct nes_cm_node *); | |
96 | ||
1a855fbf RD |
97 | static int nes_cm_disconn_true(struct nes_qp *); |
98 | static int nes_cm_post_event(struct nes_cm_event *event); | |
99 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt); | |
100 | static void nes_disconnect_worker(struct work_struct *work); | |
6492cdf3 FL |
101 | |
102 | static int send_mpa_request(struct nes_cm_node *, struct sk_buff *); | |
9d5ab133 | 103 | static int send_mpa_reject(struct nes_cm_node *); |
6492cdf3 FL |
104 | static int send_syn(struct nes_cm_node *, u32, struct sk_buff *); |
105 | static int send_reset(struct nes_cm_node *, struct sk_buff *); | |
106 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb); | |
1a855fbf | 107 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb); |
615eb715 | 108 | static void process_packet(struct nes_cm_node *, struct sk_buff *, struct nes_cm_core *); |
6492cdf3 FL |
109 | |
110 | static void active_open_err(struct nes_cm_node *, struct sk_buff *, int); | |
111 | static void passive_open_err(struct nes_cm_node *, struct sk_buff *, int); | |
112 | static void cleanup_retrans_entry(struct nes_cm_node *); | |
9d5ab133 | 113 | static void handle_rcv_mpa(struct nes_cm_node *, struct sk_buff *); |
6492cdf3 | 114 | static void free_retrans_entry(struct nes_cm_node *cm_node); |
615eb715 | 115 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, struct sk_buff *skb, int optionsize, int passive); |
6492cdf3 FL |
116 | |
117 | /* CM event handler functions */ | |
118 | static void cm_event_connected(struct nes_cm_event *); | |
119 | static void cm_event_connect_error(struct nes_cm_event *); | |
120 | static void cm_event_reset(struct nes_cm_event *); | |
121 | static void cm_event_mpa_req(struct nes_cm_event *); | |
9d5ab133 FL |
122 | static void cm_event_mpa_reject(struct nes_cm_event *); |
123 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node); | |
6492cdf3 | 124 | |
615eb715 TN |
125 | /* MPA build functions */ |
126 | static int cm_build_mpa_frame(struct nes_cm_node *, u8 **, u16 *, u8 *, u8); | |
127 | static void build_mpa_v2(struct nes_cm_node *, void *, u8); | |
128 | static void build_mpa_v1(struct nes_cm_node *, void *, u8); | |
129 | static void build_rdma0_msg(struct nes_cm_node *, struct nes_qp **); | |
130 | ||
6492cdf3 | 131 | static void print_core(struct nes_cm_core *core); |
4ac79a70 | 132 | static void record_ird_ord(struct nes_cm_node *, u16, u16); |
3c2d774c GS |
133 | |
134 | /* External CM API Interface */ | |
135 | /* instance of function pointers for client API */ | |
136 | /* set address of this instance to cm_core->cm_ops at cm_core alloc */ | |
137 | static struct nes_cm_ops nes_cm_api = { | |
138 | mini_cm_accelerated, | |
139 | mini_cm_listen, | |
140 | mini_cm_del_listen, | |
141 | mini_cm_connect, | |
142 | mini_cm_close, | |
143 | mini_cm_accept, | |
144 | mini_cm_reject, | |
145 | mini_cm_recv_pkt, | |
146 | mini_cm_dealloc_core, | |
147 | mini_cm_get, | |
148 | mini_cm_set | |
149 | }; | |
150 | ||
1a855fbf | 151 | static struct nes_cm_core *g_cm_core; |
3c2d774c GS |
152 | |
153 | atomic_t cm_connects; | |
154 | atomic_t cm_accepts; | |
155 | atomic_t cm_disconnects; | |
156 | atomic_t cm_closes; | |
157 | atomic_t cm_connecteds; | |
158 | atomic_t cm_connect_reqs; | |
159 | atomic_t cm_rejects; | |
160 | ||
0f0bee8b FL |
161 | int nes_add_ref_cm_node(struct nes_cm_node *cm_node) |
162 | { | |
163 | return add_ref_cm_node(cm_node); | |
164 | } | |
165 | ||
166 | int nes_rem_ref_cm_node(struct nes_cm_node *cm_node) | |
167 | { | |
168 | return rem_ref_cm_node(cm_node->cm_core, cm_node); | |
169 | } | |
3c2d774c GS |
170 | /** |
171 | * create_event | |
172 | */ | |
615eb715 TN |
173 | static struct nes_cm_event *create_event(struct nes_cm_node * cm_node, |
174 | enum nes_cm_event_type type) | |
3c2d774c GS |
175 | { |
176 | struct nes_cm_event *event; | |
177 | ||
178 | if (!cm_node->cm_id) | |
179 | return NULL; | |
180 | ||
181 | /* allocate an empty event */ | |
182 | event = kzalloc(sizeof(*event), GFP_ATOMIC); | |
183 | ||
184 | if (!event) | |
185 | return NULL; | |
186 | ||
187 | event->type = type; | |
188 | event->cm_node = cm_node; | |
189 | event->cm_info.rem_addr = cm_node->rem_addr; | |
190 | event->cm_info.loc_addr = cm_node->loc_addr; | |
191 | event->cm_info.rem_port = cm_node->rem_port; | |
192 | event->cm_info.loc_port = cm_node->loc_port; | |
193 | event->cm_info.cm_id = cm_node->cm_id; | |
194 | ||
6492cdf3 | 195 | nes_debug(NES_DBG_CM, "cm_node=%p Created event=%p, type=%u, " |
615eb715 TN |
196 | "dst_addr=%08x[%x], src_addr=%08x[%x]\n", |
197 | cm_node, event, type, event->cm_info.loc_addr, | |
198 | event->cm_info.loc_port, event->cm_info.rem_addr, | |
199 | event->cm_info.rem_port); | |
3c2d774c GS |
200 | |
201 | nes_cm_post_event(event); | |
202 | return event; | |
203 | } | |
204 | ||
205 | ||
206 | /** | |
207 | * send_mpa_request | |
208 | */ | |
6492cdf3 | 209 | static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c | 210 | { |
615eb715 TN |
211 | u8 start_addr = 0; |
212 | u8 *start_ptr = &start_addr; | |
213 | u8 **start_buff = &start_ptr; | |
214 | u16 buff_len = 0; | |
215 | ||
3c2d774c | 216 | if (!skb) { |
6492cdf3 | 217 | nes_debug(NES_DBG_CM, "skb set to NULL\n"); |
3c2d774c GS |
218 | return -1; |
219 | } | |
220 | ||
221 | /* send an MPA Request frame */ | |
615eb715 TN |
222 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REQUEST); |
223 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK); | |
3c2d774c | 224 | |
9d5ab133 FL |
225 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); |
226 | } | |
3c2d774c | 227 | |
9d5ab133 FL |
228 | |
229 | ||
230 | static int send_mpa_reject(struct nes_cm_node *cm_node) | |
231 | { | |
615eb715 TN |
232 | struct sk_buff *skb = NULL; |
233 | u8 start_addr = 0; | |
234 | u8 *start_ptr = &start_addr; | |
235 | u8 **start_buff = &start_ptr; | |
236 | u16 buff_len = 0; | |
81f99dcc | 237 | struct ietf_mpa_v1 *mpa_frame; |
9d5ab133 FL |
238 | |
239 | skb = dev_alloc_skb(MAX_CM_BUFFER); | |
240 | if (!skb) { | |
241 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
242 | return -ENOMEM; | |
243 | } | |
244 | ||
245 | /* send an MPA reject frame */ | |
615eb715 | 246 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REPLY); |
81f99dcc TN |
247 | mpa_frame = (struct ietf_mpa_v1 *)*start_buff; |
248 | mpa_frame->flags |= IETF_MPA_FLAGS_REJECT; | |
615eb715 | 249 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK | SET_FIN); |
9d5ab133 FL |
250 | |
251 | cm_node->state = NES_CM_STATE_FIN_WAIT1; | |
252 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
3c2d774c GS |
253 | } |
254 | ||
255 | ||
256 | /** | |
257 | * recv_mpa - process a received TCP pkt, we are expecting an | |
258 | * IETF MPA frame | |
259 | */ | |
9d5ab133 | 260 | static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type, |
615eb715 | 261 | u32 len) |
3c2d774c | 262 | { |
615eb715 TN |
263 | struct ietf_mpa_v1 *mpa_frame; |
264 | struct ietf_mpa_v2 *mpa_v2_frame; | |
265 | struct ietf_rtr_msg *rtr_msg; | |
266 | int mpa_hdr_len; | |
267 | int priv_data_len; | |
3c2d774c | 268 | |
9d5ab133 FL |
269 | *type = NES_MPA_REQUEST_ACCEPT; |
270 | ||
3c2d774c | 271 | /* assume req frame is in tcp data payload */ |
615eb715 | 272 | if (len < sizeof(struct ietf_mpa_v1)) { |
3c2d774c | 273 | nes_debug(NES_DBG_CM, "The received ietf buffer was too small (%x)\n", len); |
9d5ab133 | 274 | return -EINVAL; |
3c2d774c GS |
275 | } |
276 | ||
615eb715 TN |
277 | /* points to the beginning of the frame, which could be MPA V1 or V2 */ |
278 | mpa_frame = (struct ietf_mpa_v1 *)buffer; | |
279 | mpa_hdr_len = sizeof(struct ietf_mpa_v1); | |
280 | priv_data_len = ntohs(mpa_frame->priv_data_len); | |
281 | ||
1cf078c9 | 282 | /* make sure mpa private data len is less than 512 bytes */ |
615eb715 | 283 | if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) { |
1cf078c9 | 284 | nes_debug(NES_DBG_CM, "The received Length of Private" |
615eb715 | 285 | " Data field exceeds 512 octets\n"); |
1cf078c9 FL |
286 | return -EINVAL; |
287 | } | |
288 | /* | |
289 | * make sure MPA receiver interoperate with the | |
290 | * received MPA version and MPA key information | |
291 | * | |
292 | */ | |
615eb715 TN |
293 | if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) { |
294 | nes_debug(NES_DBG_CM, "The received mpa version" | |
295 | " is not supported\n"); | |
296 | return -EINVAL; | |
297 | } | |
298 | /* | |
299 | * backwards compatibility only | |
300 | */ | |
301 | if (mpa_frame->rev > cm_node->mpa_frame_rev) { | |
1cf078c9 | 302 | nes_debug(NES_DBG_CM, "The received mpa version" |
615eb715 | 303 | " can not be interoperated\n"); |
1cf078c9 | 304 | return -EINVAL; |
615eb715 TN |
305 | } else { |
306 | cm_node->mpa_frame_rev = mpa_frame->rev; | |
1cf078c9 | 307 | } |
615eb715 | 308 | |
1cf078c9 FL |
309 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { |
310 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) { | |
311 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); | |
312 | return -EINVAL; | |
313 | } | |
314 | } else { | |
315 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) { | |
316 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); | |
317 | return -EINVAL; | |
318 | } | |
319 | } | |
3c2d774c | 320 | |
615eb715 | 321 | if (priv_data_len + mpa_hdr_len != len) { |
3c2d774c | 322 | nes_debug(NES_DBG_CM, "The received ietf buffer was not right" |
615eb715 TN |
323 | " complete (%x + %x != %x)\n", |
324 | priv_data_len, mpa_hdr_len, len); | |
9d5ab133 FL |
325 | return -EINVAL; |
326 | } | |
327 | /* make sure it does not exceed the max size */ | |
328 | if (len > MAX_CM_BUFFER) { | |
329 | nes_debug(NES_DBG_CM, "The received ietf buffer was too large" | |
615eb715 TN |
330 | " (%x + %x != %x)\n", |
331 | priv_data_len, mpa_hdr_len, len); | |
9d5ab133 | 332 | return -EINVAL; |
3c2d774c GS |
333 | } |
334 | ||
615eb715 TN |
335 | cm_node->mpa_frame_size = priv_data_len; |
336 | ||
337 | switch (mpa_frame->rev) { | |
338 | case IETF_MPA_V2: { | |
339 | u16 ird_size; | |
340 | u16 ord_size; | |
8dd87fba TN |
341 | u16 rtr_ctrl_ird; |
342 | u16 rtr_ctrl_ord; | |
343 | ||
615eb715 TN |
344 | mpa_v2_frame = (struct ietf_mpa_v2 *)buffer; |
345 | mpa_hdr_len += IETF_RTR_MSG_SIZE; | |
346 | cm_node->mpa_frame_size -= IETF_RTR_MSG_SIZE; | |
347 | rtr_msg = &mpa_v2_frame->rtr_msg; | |
348 | ||
349 | /* parse rtr message */ | |
8dd87fba TN |
350 | rtr_ctrl_ird = ntohs(rtr_msg->ctrl_ird); |
351 | rtr_ctrl_ord = ntohs(rtr_msg->ctrl_ord); | |
352 | ird_size = rtr_ctrl_ird & IETF_NO_IRD_ORD; | |
353 | ord_size = rtr_ctrl_ord & IETF_NO_IRD_ORD; | |
615eb715 | 354 | |
8dd87fba | 355 | if (!(rtr_ctrl_ird & IETF_PEER_TO_PEER)) { |
615eb715 TN |
356 | /* send reset */ |
357 | return -EINVAL; | |
358 | } | |
4ac79a70 TN |
359 | if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) |
360 | cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD; | |
615eb715 | 361 | |
4ac79a70 | 362 | if (cm_node->mpav2_ird_ord != IETF_NO_IRD_ORD) { |
615eb715 | 363 | /* responder */ |
4ac79a70 TN |
364 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { |
365 | /* we are still negotiating */ | |
366 | if (ord_size > NES_MAX_IRD) { | |
367 | cm_node->ird_size = NES_MAX_IRD; | |
368 | } else { | |
369 | cm_node->ird_size = ord_size; | |
370 | if (ord_size == 0 && | |
371 | (rtr_ctrl_ord & IETF_RDMA0_READ)) { | |
372 | cm_node->ird_size = 1; | |
373 | nes_debug(NES_DBG_CM, | |
374 | "%s: Remote peer doesn't support RDMA0_READ (ord=%u)\n", | |
375 | __func__, ord_size); | |
376 | } | |
377 | } | |
378 | if (ird_size > NES_MAX_ORD) | |
379 | cm_node->ord_size = NES_MAX_ORD; | |
380 | else | |
381 | cm_node->ord_size = ird_size; | |
382 | } else { /* initiator */ | |
383 | if (ord_size > NES_MAX_IRD) { | |
384 | nes_debug(NES_DBG_CM, | |
385 | "%s: Unable to support the requested (ord =%u)\n", | |
386 | __func__, ord_size); | |
387 | return -EINVAL; | |
388 | } | |
389 | cm_node->ird_size = ord_size; | |
390 | ||
391 | if (ird_size > NES_MAX_ORD) { | |
392 | cm_node->ord_size = NES_MAX_ORD; | |
393 | } else { | |
394 | if (ird_size == 0 && | |
395 | (rtr_ctrl_ord & IETF_RDMA0_READ)) { | |
396 | nes_debug(NES_DBG_CM, | |
397 | "%s: Remote peer doesn't support RDMA0_READ (ird=%u)\n", | |
398 | __func__, ird_size); | |
399 | return -EINVAL; | |
400 | } else { | |
401 | cm_node->ord_size = ird_size; | |
402 | } | |
403 | } | |
615eb715 TN |
404 | } |
405 | } | |
406 | ||
8dd87fba | 407 | if (rtr_ctrl_ord & IETF_RDMA0_READ) { |
615eb715 | 408 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; |
4ac79a70 | 409 | |
8dd87fba | 410 | } else if (rtr_ctrl_ord & IETF_RDMA0_WRITE) { |
615eb715 TN |
411 | cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO; |
412 | } else { /* Not supported RDMA0 operation */ | |
413 | return -EINVAL; | |
414 | } | |
415 | break; | |
416 | } | |
417 | case IETF_MPA_V1: | |
418 | default: | |
419 | break; | |
420 | } | |
421 | ||
3c2d774c | 422 | /* copy entire MPA frame to our cm_node's frame */ |
615eb715 | 423 | memcpy(cm_node->mpa_frame_buf, buffer + mpa_hdr_len, cm_node->mpa_frame_size); |
3c2d774c | 424 | |
9d5ab133 FL |
425 | if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT) |
426 | *type = NES_MPA_REQUEST_REJECT; | |
3c2d774c GS |
427 | return 0; |
428 | } | |
429 | ||
430 | ||
3c2d774c GS |
431 | /** |
432 | * form_cm_frame - get a free packet and build empty frame Use | |
433 | * node info to build. | |
434 | */ | |
6098d107 | 435 | static void form_cm_frame(struct sk_buff *skb, |
615eb715 TN |
436 | struct nes_cm_node *cm_node, void *options, u32 optionsize, |
437 | void *data, u32 datasize, u8 flags) | |
3c2d774c GS |
438 | { |
439 | struct tcphdr *tcph; | |
440 | struct iphdr *iph; | |
441 | struct ethhdr *ethh; | |
442 | u8 *buf; | |
443 | u16 packetsize = sizeof(*iph); | |
444 | ||
445 | packetsize += sizeof(*tcph); | |
615eb715 | 446 | packetsize += optionsize + datasize; |
3c2d774c | 447 | |
615eb715 | 448 | skb_trim(skb, 0); |
3c2d774c GS |
449 | memset(skb->data, 0x00, ETH_HLEN + sizeof(*iph) + sizeof(*tcph)); |
450 | ||
3c2d774c GS |
451 | buf = skb_put(skb, packetsize + ETH_HLEN); |
452 | ||
615eb715 | 453 | ethh = (struct ethhdr *)buf; |
3c2d774c GS |
454 | buf += ETH_HLEN; |
455 | ||
456 | iph = (struct iphdr *)buf; | |
457 | buf += sizeof(*iph); | |
458 | tcph = (struct tcphdr *)buf; | |
459 | skb_reset_mac_header(skb); | |
460 | skb_set_network_header(skb, ETH_HLEN); | |
615eb715 | 461 | skb_set_transport_header(skb, ETH_HLEN + sizeof(*iph)); |
3c2d774c GS |
462 | buf += sizeof(*tcph); |
463 | ||
464 | skb->ip_summed = CHECKSUM_PARTIAL; | |
fc4ba729 TN |
465 | if (!(cm_node->netdev->features & NETIF_F_IP_CSUM)) |
466 | skb->ip_summed = CHECKSUM_NONE; | |
3c2d774c GS |
467 | skb->protocol = htons(0x800); |
468 | skb->data_len = 0; | |
469 | skb->mac_len = ETH_HLEN; | |
470 | ||
471 | memcpy(ethh->h_dest, cm_node->rem_mac, ETH_ALEN); | |
472 | memcpy(ethh->h_source, cm_node->loc_mac, ETH_ALEN); | |
473 | ethh->h_proto = htons(0x0800); | |
474 | ||
475 | iph->version = IPVERSION; | |
615eb715 | 476 | iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ |
3c2d774c GS |
477 | iph->tos = 0; |
478 | iph->tot_len = htons(packetsize); | |
479 | iph->id = htons(++cm_node->tcp_cntxt.loc_id); | |
480 | ||
481 | iph->frag_off = htons(0x4000); | |
482 | iph->ttl = 0x40; | |
615eb715 | 483 | iph->protocol = 0x06; /* IPPROTO_TCP */ |
3c2d774c | 484 | |
5647263c TN |
485 | iph->saddr = htonl(cm_node->mapped_loc_addr); |
486 | iph->daddr = htonl(cm_node->mapped_rem_addr); | |
3c2d774c | 487 | |
5647263c TN |
488 | tcph->source = htons(cm_node->mapped_loc_port); |
489 | tcph->dest = htons(cm_node->mapped_rem_port); | |
3c2d774c GS |
490 | tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num); |
491 | ||
492 | if (flags & SET_ACK) { | |
493 | cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt; | |
494 | tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); | |
495 | tcph->ack = 1; | |
615eb715 | 496 | } else { |
3c2d774c | 497 | tcph->ack_seq = 0; |
615eb715 | 498 | } |
3c2d774c GS |
499 | |
500 | if (flags & SET_SYN) { | |
501 | cm_node->tcp_cntxt.loc_seq_num++; | |
502 | tcph->syn = 1; | |
615eb715 | 503 | } else { |
6492cdf3 | 504 | cm_node->tcp_cntxt.loc_seq_num += datasize; |
615eb715 | 505 | } |
3c2d774c | 506 | |
6492cdf3 FL |
507 | if (flags & SET_FIN) { |
508 | cm_node->tcp_cntxt.loc_seq_num++; | |
3c2d774c | 509 | tcph->fin = 1; |
6492cdf3 | 510 | } |
3c2d774c GS |
511 | |
512 | if (flags & SET_RST) | |
513 | tcph->rst = 1; | |
514 | ||
515 | tcph->doff = (u16)((sizeof(*tcph) + optionsize + 3) >> 2); | |
516 | tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); | |
517 | tcph->urg_ptr = 0; | |
518 | if (optionsize) | |
519 | memcpy(buf, options, optionsize); | |
520 | buf += optionsize; | |
521 | if (datasize) | |
522 | memcpy(buf, data, datasize); | |
523 | ||
524 | skb_shinfo(skb)->nr_frags = 0; | |
525 | cm_packets_created++; | |
3c2d774c GS |
526 | } |
527 | ||
5647263c TN |
528 | /* |
529 | * nes_create_sockaddr - Record ip addr and tcp port in a sockaddr struct | |
530 | */ | |
531 | static void nes_create_sockaddr(__be32 ip_addr, __be16 port, | |
532 | struct sockaddr_storage *addr) | |
533 | { | |
534 | struct sockaddr_in *nes_sockaddr = (struct sockaddr_in *)addr; | |
535 | nes_sockaddr->sin_family = AF_INET; | |
536 | memcpy(&nes_sockaddr->sin_addr.s_addr, &ip_addr, sizeof(__be32)); | |
537 | nes_sockaddr->sin_port = port; | |
538 | } | |
539 | ||
540 | /* | |
541 | * nes_create_mapinfo - Create a mapinfo object in the port mapper data base | |
542 | */ | |
543 | static int nes_create_mapinfo(struct nes_cm_info *cm_info) | |
544 | { | |
545 | struct sockaddr_storage local_sockaddr; | |
546 | struct sockaddr_storage mapped_sockaddr; | |
547 | ||
548 | nes_create_sockaddr(htonl(cm_info->loc_addr), htons(cm_info->loc_port), | |
549 | &local_sockaddr); | |
550 | nes_create_sockaddr(htonl(cm_info->mapped_loc_addr), | |
551 | htons(cm_info->mapped_loc_port), &mapped_sockaddr); | |
552 | ||
553 | return iwpm_create_mapinfo(&local_sockaddr, | |
554 | &mapped_sockaddr, RDMA_NL_NES); | |
555 | } | |
556 | ||
557 | /* | |
558 | * nes_remove_mapinfo - Remove a mapinfo object from the port mapper data base | |
559 | * and send a remove mapping op message to | |
560 | * the userspace port mapper | |
561 | */ | |
562 | static int nes_remove_mapinfo(u32 loc_addr, u16 loc_port, | |
563 | u32 mapped_loc_addr, u16 mapped_loc_port) | |
564 | { | |
565 | struct sockaddr_storage local_sockaddr; | |
566 | struct sockaddr_storage mapped_sockaddr; | |
567 | ||
568 | nes_create_sockaddr(htonl(loc_addr), htons(loc_port), &local_sockaddr); | |
569 | nes_create_sockaddr(htonl(mapped_loc_addr), htons(mapped_loc_port), | |
570 | &mapped_sockaddr); | |
571 | ||
572 | iwpm_remove_mapinfo(&local_sockaddr, &mapped_sockaddr); | |
573 | return iwpm_remove_mapping(&local_sockaddr, RDMA_NL_NES); | |
574 | } | |
575 | ||
576 | /* | |
577 | * nes_form_pm_msg - Form a port mapper message with mapping info | |
578 | */ | |
579 | static void nes_form_pm_msg(struct nes_cm_info *cm_info, | |
580 | struct iwpm_sa_data *pm_msg) | |
581 | { | |
582 | nes_create_sockaddr(htonl(cm_info->loc_addr), htons(cm_info->loc_port), | |
583 | &pm_msg->loc_addr); | |
584 | nes_create_sockaddr(htonl(cm_info->rem_addr), htons(cm_info->rem_port), | |
585 | &pm_msg->rem_addr); | |
586 | } | |
587 | ||
588 | /* | |
589 | * nes_form_reg_msg - Form a port mapper message with dev info | |
590 | */ | |
591 | static void nes_form_reg_msg(struct nes_vnic *nesvnic, | |
592 | struct iwpm_dev_data *pm_msg) | |
593 | { | |
594 | memcpy(pm_msg->dev_name, nesvnic->nesibdev->ibdev.name, | |
595 | IWPM_DEVNAME_SIZE); | |
596 | memcpy(pm_msg->if_name, nesvnic->netdev->name, IWPM_IFNAME_SIZE); | |
597 | } | |
598 | ||
599 | /* | |
600 | * nes_record_pm_msg - Save the received mapping info | |
601 | */ | |
602 | static void nes_record_pm_msg(struct nes_cm_info *cm_info, | |
603 | struct iwpm_sa_data *pm_msg) | |
604 | { | |
605 | struct sockaddr_in *mapped_loc_addr = | |
606 | (struct sockaddr_in *)&pm_msg->mapped_loc_addr; | |
607 | struct sockaddr_in *mapped_rem_addr = | |
608 | (struct sockaddr_in *)&pm_msg->mapped_rem_addr; | |
609 | ||
610 | if (mapped_loc_addr->sin_family == AF_INET) { | |
611 | cm_info->mapped_loc_addr = | |
612 | ntohl(mapped_loc_addr->sin_addr.s_addr); | |
613 | cm_info->mapped_loc_port = ntohs(mapped_loc_addr->sin_port); | |
614 | } | |
615 | if (mapped_rem_addr->sin_family == AF_INET) { | |
616 | cm_info->mapped_rem_addr = | |
617 | ntohl(mapped_rem_addr->sin_addr.s_addr); | |
618 | cm_info->mapped_rem_port = ntohs(mapped_rem_addr->sin_port); | |
619 | } | |
620 | } | |
621 | ||
3c2d774c GS |
622 | /** |
623 | * print_core - dump a cm core | |
624 | */ | |
625 | static void print_core(struct nes_cm_core *core) | |
626 | { | |
627 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
628 | nes_debug(NES_DBG_CM, "CM Core -- (core = %p )\n", core); | |
629 | if (!core) | |
630 | return; | |
631 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
3c2d774c | 632 | |
615eb715 | 633 | nes_debug(NES_DBG_CM, "State : %u \n", core->state); |
3c2d774c | 634 | |
3c2d774c GS |
635 | nes_debug(NES_DBG_CM, "Listen Nodes : %u \n", atomic_read(&core->listen_node_cnt)); |
636 | nes_debug(NES_DBG_CM, "Active Nodes : %u \n", atomic_read(&core->node_cnt)); | |
637 | ||
638 | nes_debug(NES_DBG_CM, "core : %p \n", core); | |
639 | ||
640 | nes_debug(NES_DBG_CM, "-------------- end core ---------------\n"); | |
641 | } | |
642 | ||
4ac79a70 TN |
643 | static void record_ird_ord(struct nes_cm_node *cm_node, |
644 | u16 conn_ird, u16 conn_ord) | |
645 | { | |
646 | if (conn_ird > NES_MAX_IRD) | |
647 | conn_ird = NES_MAX_IRD; | |
648 | ||
649 | if (conn_ord > NES_MAX_ORD) | |
650 | conn_ord = NES_MAX_ORD; | |
651 | ||
652 | cm_node->ird_size = conn_ird; | |
653 | cm_node->ord_size = conn_ord; | |
654 | } | |
655 | ||
615eb715 TN |
656 | /** |
657 | * cm_build_mpa_frame - build a MPA V1 frame or MPA V2 frame | |
658 | */ | |
659 | static int cm_build_mpa_frame(struct nes_cm_node *cm_node, u8 **start_buff, | |
660 | u16 *buff_len, u8 *pci_mem, u8 mpa_key) | |
661 | { | |
662 | int ret = 0; | |
663 | ||
664 | *start_buff = (pci_mem) ? pci_mem : &cm_node->mpa_frame_buf[0]; | |
665 | ||
666 | switch (cm_node->mpa_frame_rev) { | |
667 | case IETF_MPA_V1: | |
668 | *start_buff = (u8 *)*start_buff + sizeof(struct ietf_rtr_msg); | |
669 | *buff_len = sizeof(struct ietf_mpa_v1) + cm_node->mpa_frame_size; | |
670 | build_mpa_v1(cm_node, *start_buff, mpa_key); | |
671 | break; | |
672 | case IETF_MPA_V2: | |
673 | *buff_len = sizeof(struct ietf_mpa_v2) + cm_node->mpa_frame_size; | |
674 | build_mpa_v2(cm_node, *start_buff, mpa_key); | |
675 | break; | |
676 | default: | |
677 | ret = -EINVAL; | |
678 | } | |
679 | return ret; | |
680 | } | |
681 | ||
682 | /** | |
683 | * build_mpa_v2 - build a MPA V2 frame | |
684 | */ | |
685 | static void build_mpa_v2(struct nes_cm_node *cm_node, | |
686 | void *start_addr, u8 mpa_key) | |
687 | { | |
688 | struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr; | |
689 | struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg; | |
8dd87fba TN |
690 | u16 ctrl_ird; |
691 | u16 ctrl_ord; | |
615eb715 TN |
692 | |
693 | /* initialize the upper 5 bytes of the frame */ | |
694 | build_mpa_v1(cm_node, start_addr, mpa_key); | |
695 | mpa_frame->flags |= IETF_MPA_V2_FLAG; /* set a bit to indicate MPA V2 */ | |
696 | mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE); | |
697 | ||
698 | /* initialize RTR msg */ | |
4ac79a70 TN |
699 | if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) { |
700 | ctrl_ird = IETF_NO_IRD_ORD; | |
701 | ctrl_ord = IETF_NO_IRD_ORD; | |
702 | } else { | |
703 | ctrl_ird = cm_node->ird_size & IETF_NO_IRD_ORD; | |
704 | ctrl_ord = cm_node->ord_size & IETF_NO_IRD_ORD; | |
705 | } | |
8dd87fba TN |
706 | ctrl_ird |= IETF_PEER_TO_PEER; |
707 | ctrl_ird |= IETF_FLPDU_ZERO_LEN; | |
615eb715 TN |
708 | |
709 | switch (mpa_key) { | |
710 | case MPA_KEY_REQUEST: | |
8dd87fba TN |
711 | ctrl_ord |= IETF_RDMA0_WRITE; |
712 | ctrl_ord |= IETF_RDMA0_READ; | |
615eb715 TN |
713 | break; |
714 | case MPA_KEY_REPLY: | |
715 | switch (cm_node->send_rdma0_op) { | |
716 | case SEND_RDMA_WRITE_ZERO: | |
8dd87fba | 717 | ctrl_ord |= IETF_RDMA0_WRITE; |
615eb715 TN |
718 | break; |
719 | case SEND_RDMA_READ_ZERO: | |
8dd87fba | 720 | ctrl_ord |= IETF_RDMA0_READ; |
615eb715 TN |
721 | break; |
722 | } | |
723 | } | |
8dd87fba TN |
724 | rtr_msg->ctrl_ird = htons(ctrl_ird); |
725 | rtr_msg->ctrl_ord = htons(ctrl_ord); | |
615eb715 TN |
726 | } |
727 | ||
728 | /** | |
729 | * build_mpa_v1 - build a MPA V1 frame | |
730 | */ | |
731 | static void build_mpa_v1(struct nes_cm_node *cm_node, void *start_addr, u8 mpa_key) | |
732 | { | |
733 | struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr; | |
734 | ||
735 | switch (mpa_key) { | |
736 | case MPA_KEY_REQUEST: | |
737 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE); | |
738 | break; | |
739 | case MPA_KEY_REPLY: | |
740 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE); | |
741 | break; | |
742 | } | |
743 | mpa_frame->flags = IETF_MPA_FLAGS_CRC; | |
744 | mpa_frame->rev = cm_node->mpa_frame_rev; | |
745 | mpa_frame->priv_data_len = htons(cm_node->mpa_frame_size); | |
746 | } | |
747 | ||
748 | static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_addr) | |
749 | { | |
750 | u64 u64temp; | |
751 | struct nes_qp *nesqp = *nesqp_addr; | |
752 | struct nes_hw_qp_wqe *wqe = &nesqp->hwqp.sq_vbase[0]; | |
753 | ||
43adff39 | 754 | u64temp = (unsigned long)nesqp->nesuqp_addr; |
615eb715 TN |
755 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
756 | set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp); | |
757 | ||
758 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0; | |
759 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0; | |
760 | ||
761 | switch (cm_node->send_rdma0_op) { | |
762 | case SEND_RDMA_WRITE_ZERO: | |
763 | nes_debug(NES_DBG_CM, "Sending first write.\n"); | |
764 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
765 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAW); | |
766 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0; | |
767 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0; | |
768 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; | |
769 | break; | |
770 | ||
771 | case SEND_RDMA_READ_ZERO: | |
772 | default: | |
079abea6 JL |
773 | if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO) |
774 | WARN(1, "Unsupported RDMA0 len operation=%u\n", | |
775 | cm_node->send_rdma0_op); | |
615eb715 TN |
776 | nes_debug(NES_DBG_CM, "Sending first rdma operation.\n"); |
777 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
778 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAR); | |
779 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = 1; | |
780 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = 0; | |
781 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 0; | |
782 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = 1; | |
783 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 1; | |
784 | break; | |
785 | } | |
786 | ||
787 | if (nesqp->sq_kmapped) { | |
788 | nesqp->sq_kmapped = 0; | |
789 | kunmap(nesqp->page); | |
790 | } | |
791 | ||
792 | /*use the reserved spot on the WQ for the extra first WQE*/ | |
793 | nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
794 | NES_QPCONTEXT_ORDIRD_WRPDU | | |
795 | NES_QPCONTEXT_ORDIRD_ALSMM)); | |
796 | nesqp->skip_lsmm = 1; | |
797 | nesqp->hwqp.sq_tail = 0; | |
798 | } | |
3c2d774c GS |
799 | |
800 | /** | |
801 | * schedule_nes_timer | |
802 | * note - cm_node needs to be protected before calling this. Encase in: | |
803 | * rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node); | |
804 | */ | |
805 | int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 TN |
806 | enum nes_timer_type type, int send_retrans, |
807 | int close_when_complete) | |
3c2d774c | 808 | { |
615eb715 | 809 | unsigned long flags; |
6492cdf3 | 810 | struct nes_cm_core *cm_core = cm_node->cm_core; |
3c2d774c GS |
811 | struct nes_timer_entry *new_send; |
812 | int ret = 0; | |
3c2d774c GS |
813 | |
814 | new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC); | |
815 | if (!new_send) | |
9d5ab133 | 816 | return -ENOMEM; |
3c2d774c GS |
817 | |
818 | /* new_send->timetosend = currenttime */ | |
819 | new_send->retrycount = NES_DEFAULT_RETRYS; | |
820 | new_send->retranscount = NES_DEFAULT_RETRANS; | |
821 | new_send->skb = skb; | |
822 | new_send->timetosend = jiffies; | |
823 | new_send->type = type; | |
824 | new_send->netdev = cm_node->netdev; | |
825 | new_send->send_retrans = send_retrans; | |
826 | new_send->close_when_complete = close_when_complete; | |
827 | ||
828 | if (type == NES_TIMER_TYPE_CLOSE) { | |
615eb715 | 829 | new_send->timetosend += (HZ / 10); |
9d5ab133 | 830 | if (cm_node->recv_entry) { |
79fc3d74 | 831 | kfree(new_send); |
9d5ab133 FL |
832 | WARN_ON(1); |
833 | return -EINVAL; | |
834 | } | |
835 | cm_node->recv_entry = new_send; | |
3c2d774c GS |
836 | } |
837 | ||
838 | if (type == NES_TIMER_TYPE_SEND) { | |
b30db1c1 | 839 | new_send->seq_num = ntohl(tcp_hdr(skb)->seq); |
3c2d774c | 840 | atomic_inc(&new_send->skb->users); |
6492cdf3 FL |
841 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
842 | cm_node->send_entry = new_send; | |
843 | add_ref_cm_node(cm_node); | |
844 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
845 | new_send->timetosend = jiffies + NES_RETRY_TIMEOUT; | |
3c2d774c GS |
846 | |
847 | ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev); | |
848 | if (ret != NETDEV_TX_OK) { | |
6492cdf3 | 849 | nes_debug(NES_DBG_CM, "Error sending packet %p " |
615eb715 | 850 | "(jiffies = %lu)\n", new_send, jiffies); |
3c2d774c | 851 | new_send->timetosend = jiffies; |
5962c2c8 | 852 | ret = NETDEV_TX_OK; |
3c2d774c GS |
853 | } else { |
854 | cm_packets_sent++; | |
855 | if (!send_retrans) { | |
6492cdf3 | 856 | cleanup_retrans_entry(cm_node); |
3c2d774c | 857 | if (close_when_complete) |
6492cdf3 | 858 | rem_ref_cm_node(cm_core, cm_node); |
3c2d774c GS |
859 | return ret; |
860 | } | |
3c2d774c | 861 | } |
3c2d774c | 862 | } |
3c2d774c | 863 | |
00ad255d TN |
864 | if (!timer_pending(&cm_core->tcp_timer)) |
865 | mod_timer(&cm_core->tcp_timer, new_send->timetosend); | |
3c2d774c GS |
866 | |
867 | return ret; | |
868 | } | |
869 | ||
9d5ab133 FL |
870 | static void nes_retrans_expired(struct nes_cm_node *cm_node) |
871 | { | |
68237a0f | 872 | struct iw_cm_id *cm_id = cm_node->cm_id; |
dae58728 FL |
873 | enum nes_cm_node_state state = cm_node->state; |
874 | cm_node->state = NES_CM_STATE_CLOSED; | |
615eb715 | 875 | |
dae58728 | 876 | switch (state) { |
9d5ab133 FL |
877 | case NES_CM_STATE_SYN_RCVD: |
878 | case NES_CM_STATE_CLOSING: | |
879 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
880 | break; | |
881 | case NES_CM_STATE_LAST_ACK: | |
882 | case NES_CM_STATE_FIN_WAIT1: | |
68237a0f FL |
883 | if (cm_node->cm_id) |
884 | cm_id->rem_ref(cm_id); | |
9d5ab133 FL |
885 | send_reset(cm_node, NULL); |
886 | break; | |
887 | default: | |
69524e1a FL |
888 | add_ref_cm_node(cm_node); |
889 | send_reset(cm_node, NULL); | |
9d5ab133 FL |
890 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
891 | } | |
892 | } | |
893 | ||
894 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node) | |
895 | { | |
896 | struct nes_timer_entry *recv_entry = cm_node->recv_entry; | |
897 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
898 | struct nes_qp *nesqp; | |
899 | unsigned long qplockflags; | |
900 | ||
901 | if (!recv_entry) | |
902 | return; | |
903 | nesqp = (struct nes_qp *)recv_entry->skb; | |
904 | if (nesqp) { | |
905 | spin_lock_irqsave(&nesqp->lock, qplockflags); | |
906 | if (nesqp->cm_id) { | |
907 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
908 | "refcount = %d: HIT A " |
909 | "NES_TIMER_TYPE_CLOSE with something " | |
910 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
911 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
912 | nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; |
913 | nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; | |
914 | nesqp->ibqp_state = IB_QPS_ERR; | |
915 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
916 | nes_cm_disconn(nesqp); | |
917 | } else { | |
918 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
919 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
920 | "refcount = %d: HIT A " |
921 | "NES_TIMER_TYPE_CLOSE with nothing " | |
922 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
923 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
924 | } |
925 | } else if (rem_node) { | |
926 | /* TIME_WAIT state */ | |
927 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
928 | } | |
929 | if (cm_node->cm_id) | |
930 | cm_id->rem_ref(cm_id); | |
931 | kfree(recv_entry); | |
932 | cm_node->recv_entry = NULL; | |
933 | } | |
3c2d774c GS |
934 | |
935 | /** | |
936 | * nes_cm_timer_tick | |
937 | */ | |
1a855fbf | 938 | static void nes_cm_timer_tick(unsigned long pass) |
3c2d774c | 939 | { |
9d5ab133 | 940 | unsigned long flags; |
3c2d774c | 941 | unsigned long nexttimeout = jiffies + NES_LONG_TIME; |
3c2d774c GS |
942 | struct nes_cm_node *cm_node; |
943 | struct nes_timer_entry *send_entry, *recv_entry; | |
9d5ab133 FL |
944 | struct list_head *list_core_temp; |
945 | struct list_head *list_node; | |
3c2d774c | 946 | struct nes_cm_core *cm_core = g_cm_core; |
3c2d774c | 947 | u32 settimer = 0; |
4e9c3900 | 948 | unsigned long timetosend; |
3c2d774c | 949 | int ret = NETDEV_TX_OK; |
3c2d774c | 950 | |
879e5bd5 | 951 | struct list_head timer_list; |
615eb715 | 952 | |
879e5bd5 | 953 | INIT_LIST_HEAD(&timer_list); |
3c2d774c GS |
954 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
955 | ||
6492cdf3 | 956 | list_for_each_safe(list_node, list_core_temp, |
615eb715 | 957 | &cm_core->connected_nodes) { |
3c2d774c | 958 | cm_node = container_of(list_node, struct nes_cm_node, list); |
9d5ab133 | 959 | if ((cm_node->recv_entry) || (cm_node->send_entry)) { |
879e5bd5 FL |
960 | add_ref_cm_node(cm_node); |
961 | list_add(&cm_node->timer_entry, &timer_list); | |
962 | } | |
963 | } | |
964 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
965 | ||
966 | list_for_each_safe(list_node, list_core_temp, &timer_list) { | |
967 | cm_node = container_of(list_node, struct nes_cm_node, | |
615eb715 | 968 | timer_entry); |
9d5ab133 FL |
969 | recv_entry = cm_node->recv_entry; |
970 | ||
971 | if (recv_entry) { | |
6492cdf3 FL |
972 | if (time_after(recv_entry->timetosend, jiffies)) { |
973 | if (nexttimeout > recv_entry->timetosend || | |
615eb715 | 974 | !settimer) { |
3c2d774c GS |
975 | nexttimeout = recv_entry->timetosend; |
976 | settimer = 1; | |
977 | } | |
615eb715 | 978 | } else { |
9d5ab133 | 979 | handle_recv_entry(cm_node, 1); |
615eb715 | 980 | } |
3c2d774c | 981 | } |
3c2d774c GS |
982 | |
983 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); | |
6492cdf3 FL |
984 | do { |
985 | send_entry = cm_node->send_entry; | |
986 | if (!send_entry) | |
c5d321e5 | 987 | break; |
3c2d774c GS |
988 | if (time_after(send_entry->timetosend, jiffies)) { |
989 | if (cm_node->state != NES_CM_STATE_TSA) { | |
6492cdf3 | 990 | if ((nexttimeout > |
615eb715 TN |
991 | send_entry->timetosend) || |
992 | !settimer) { | |
6492cdf3 FL |
993 | nexttimeout = |
994 | send_entry->timetosend; | |
3c2d774c GS |
995 | settimer = 1; |
996 | } | |
3c2d774c | 997 | } else { |
6492cdf3 | 998 | free_retrans_entry(cm_node); |
3c2d774c | 999 | } |
9d5ab133 | 1000 | break; |
3c2d774c | 1001 | } |
6492cdf3 FL |
1002 | |
1003 | if ((cm_node->state == NES_CM_STATE_TSA) || | |
615eb715 | 1004 | (cm_node->state == NES_CM_STATE_CLOSED)) { |
6492cdf3 | 1005 | free_retrans_entry(cm_node); |
c5d321e5 | 1006 | break; |
3c2d774c GS |
1007 | } |
1008 | ||
6492cdf3 | 1009 | if (!send_entry->retranscount || |
615eb715 | 1010 | !send_entry->retrycount) { |
3c2d774c | 1011 | cm_packets_dropped++; |
6492cdf3 | 1012 | free_retrans_entry(cm_node); |
9d5ab133 | 1013 | |
6492cdf3 FL |
1014 | spin_unlock_irqrestore( |
1015 | &cm_node->retrans_list_lock, flags); | |
9d5ab133 FL |
1016 | nes_retrans_expired(cm_node); |
1017 | cm_node->state = NES_CM_STATE_CLOSED; | |
6492cdf3 | 1018 | spin_lock_irqsave(&cm_node->retrans_list_lock, |
615eb715 | 1019 | flags); |
c5d321e5 | 1020 | break; |
3c2d774c | 1021 | } |
3c2d774c GS |
1022 | atomic_inc(&send_entry->skb->users); |
1023 | cm_packets_retrans++; | |
6492cdf3 | 1024 | nes_debug(NES_DBG_CM, "Retransmitting send_entry %p " |
615eb715 TN |
1025 | "for node %p, jiffies = %lu, time to send = " |
1026 | "%lu, retranscount = %u, send_entry->seq_num = " | |
1027 | "0x%08X, cm_node->tcp_cntxt.rem_ack_num = " | |
1028 | "0x%08X\n", send_entry, cm_node, jiffies, | |
1029 | send_entry->timetosend, | |
1030 | send_entry->retranscount, | |
1031 | send_entry->seq_num, | |
1032 | cm_node->tcp_cntxt.rem_ack_num); | |
6492cdf3 FL |
1033 | |
1034 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, | |
615eb715 | 1035 | flags); |
3c2d774c | 1036 | ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev); |
6492cdf3 | 1037 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
3c2d774c | 1038 | if (ret != NETDEV_TX_OK) { |
6492cdf3 | 1039 | nes_debug(NES_DBG_CM, "rexmit failed for " |
615eb715 | 1040 | "node=%p\n", cm_node); |
3c2d774c | 1041 | cm_packets_bounced++; |
3c2d774c GS |
1042 | send_entry->retrycount--; |
1043 | nexttimeout = jiffies + NES_SHORT_TIME; | |
1044 | settimer = 1; | |
c5d321e5 | 1045 | break; |
3c2d774c GS |
1046 | } else { |
1047 | cm_packets_sent++; | |
1048 | } | |
6492cdf3 | 1049 | nes_debug(NES_DBG_CM, "Packet Sent: retrans count = " |
615eb715 TN |
1050 | "%u, retry count = %u.\n", |
1051 | send_entry->retranscount, | |
1052 | send_entry->retrycount); | |
3c2d774c GS |
1053 | if (send_entry->send_retrans) { |
1054 | send_entry->retranscount--; | |
4e9c3900 | 1055 | timetosend = (NES_RETRY_TIMEOUT << |
615eb715 | 1056 | (NES_DEFAULT_RETRANS - send_entry->retranscount)); |
4e9c3900 | 1057 | |
6492cdf3 | 1058 | send_entry->timetosend = jiffies + |
615eb715 | 1059 | min(timetosend, NES_MAX_TIMEOUT); |
6492cdf3 | 1060 | if (nexttimeout > send_entry->timetosend || |
615eb715 | 1061 | !settimer) { |
3c2d774c GS |
1062 | nexttimeout = send_entry->timetosend; |
1063 | settimer = 1; | |
1064 | } | |
3c2d774c GS |
1065 | } else { |
1066 | int close_when_complete; | |
6492cdf3 FL |
1067 | close_when_complete = |
1068 | send_entry->close_when_complete; | |
1069 | nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n", | |
615eb715 | 1070 | cm_node, cm_node->state); |
6492cdf3 FL |
1071 | free_retrans_entry(cm_node); |
1072 | if (close_when_complete) | |
1073 | rem_ref_cm_node(cm_node->cm_core, | |
615eb715 | 1074 | cm_node); |
3c2d774c | 1075 | } |
6492cdf3 | 1076 | } while (0); |
3c2d774c | 1077 | |
6492cdf3 FL |
1078 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
1079 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 1080 | } |
3c2d774c GS |
1081 | |
1082 | if (settimer) { | |
00ad255d TN |
1083 | if (!timer_pending(&cm_core->tcp_timer)) |
1084 | mod_timer(&cm_core->tcp_timer, nexttimeout); | |
3c2d774c GS |
1085 | } |
1086 | } | |
1087 | ||
1088 | ||
1089 | /** | |
1090 | * send_syn | |
1091 | */ | |
6492cdf3 | 1092 | static int send_syn(struct nes_cm_node *cm_node, u32 sendack, |
615eb715 | 1093 | struct sk_buff *skb) |
3c2d774c GS |
1094 | { |
1095 | int ret; | |
1096 | int flags = SET_SYN; | |
3c2d774c | 1097 | char optionsbuffer[sizeof(struct option_mss) + |
615eb715 TN |
1098 | sizeof(struct option_windowscale) + sizeof(struct option_base) + |
1099 | TCP_OPTIONS_PADDING]; | |
3c2d774c GS |
1100 | |
1101 | int optionssize = 0; | |
1102 | /* Sending MSS option */ | |
1103 | union all_known_options *options; | |
1104 | ||
1105 | if (!cm_node) | |
1106 | return -EINVAL; | |
1107 | ||
1108 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1109 | options->as_mss.optionnum = OPTION_NUMBER_MSS; | |
1110 | options->as_mss.length = sizeof(struct option_mss); | |
1111 | options->as_mss.mss = htons(cm_node->tcp_cntxt.mss); | |
1112 | optionssize += sizeof(struct option_mss); | |
1113 | ||
1114 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1115 | options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE; | |
1116 | options->as_windowscale.length = sizeof(struct option_windowscale); | |
1117 | options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale; | |
1118 | optionssize += sizeof(struct option_windowscale); | |
1119 | ||
6492cdf3 | 1120 | if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)) { |
3c2d774c GS |
1121 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
1122 | options->as_base.optionnum = OPTION_NUMBER_WRITE0; | |
1123 | options->as_base.length = sizeof(struct option_base); | |
1124 | optionssize += sizeof(struct option_base); | |
1125 | /* we need the size to be a multiple of 4 */ | |
1126 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1127 | options->as_end = 1; | |
1128 | optionssize += 1; | |
1129 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1130 | options->as_end = 1; | |
1131 | optionssize += 1; | |
1132 | } | |
1133 | ||
1134 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1135 | options->as_end = OPTION_NUMBER_END; | |
1136 | optionssize += 1; | |
1137 | ||
6492cdf3 | 1138 | if (!skb) |
e189062a | 1139 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1140 | if (!skb) { |
1141 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1142 | return -1; | |
1143 | } | |
1144 | ||
1145 | if (sendack) | |
1146 | flags |= SET_ACK; | |
1147 | ||
1148 | form_cm_frame(skb, cm_node, optionsbuffer, optionssize, NULL, 0, flags); | |
1149 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1150 | ||
1151 | return ret; | |
1152 | } | |
1153 | ||
1154 | ||
1155 | /** | |
1156 | * send_reset | |
1157 | */ | |
6492cdf3 | 1158 | static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1159 | { |
1160 | int ret; | |
3c2d774c GS |
1161 | int flags = SET_RST | SET_ACK; |
1162 | ||
6492cdf3 | 1163 | if (!skb) |
e189062a | 1164 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1165 | if (!skb) { |
1166 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
9d5ab133 | 1167 | return -ENOMEM; |
3c2d774c GS |
1168 | } |
1169 | ||
3c2d774c GS |
1170 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags); |
1171 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1); | |
1172 | ||
1173 | return ret; | |
1174 | } | |
1175 | ||
1176 | ||
1177 | /** | |
1178 | * send_ack | |
1179 | */ | |
6492cdf3 | 1180 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1181 | { |
1182 | int ret; | |
6492cdf3 FL |
1183 | |
1184 | if (!skb) | |
e189062a | 1185 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1186 | |
1187 | if (!skb) { | |
1188 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1189 | return -1; | |
1190 | } | |
1191 | ||
1192 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK); | |
1193 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 0); | |
1194 | ||
1195 | return ret; | |
1196 | } | |
1197 | ||
1198 | ||
1199 | /** | |
1200 | * send_fin | |
1201 | */ | |
1a855fbf | 1202 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1203 | { |
1204 | int ret; | |
1205 | ||
1206 | /* if we didn't get a frame get one */ | |
1207 | if (!skb) | |
e189062a | 1208 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1209 | |
1210 | if (!skb) { | |
1211 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1212 | return -1; | |
1213 | } | |
1214 | ||
1215 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK | SET_FIN); | |
1216 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1217 | ||
1218 | return ret; | |
1219 | } | |
1220 | ||
1221 | ||
3c2d774c GS |
1222 | /** |
1223 | * find_node - find a cm node that matches the reference cm node | |
1224 | */ | |
1225 | static struct nes_cm_node *find_node(struct nes_cm_core *cm_core, | |
615eb715 | 1226 | u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr) |
3c2d774c GS |
1227 | { |
1228 | unsigned long flags; | |
3c2d774c GS |
1229 | struct list_head *hte; |
1230 | struct nes_cm_node *cm_node; | |
1231 | ||
3c2d774c GS |
1232 | /* get a handle on the hte */ |
1233 | hte = &cm_core->connected_nodes; | |
1234 | ||
3c2d774c GS |
1235 | /* walk list and find cm_node associated with this session ID */ |
1236 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
4e96a774 | 1237 | list_for_each_entry(cm_node, hte, list) { |
3c2d774c GS |
1238 | /* compare quad, return node handle if a match */ |
1239 | nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n", | |
615eb715 TN |
1240 | cm_node->loc_addr, cm_node->loc_port, |
1241 | loc_addr, loc_port, | |
1242 | cm_node->rem_addr, cm_node->rem_port, | |
1243 | rem_addr, rem_port); | |
5647263c TN |
1244 | if ((cm_node->mapped_loc_addr == loc_addr) && |
1245 | (cm_node->mapped_loc_port == loc_port) && | |
1246 | (cm_node->mapped_rem_addr == rem_addr) && | |
1247 | (cm_node->mapped_rem_port == rem_port)) { | |
1248 | ||
3c2d774c GS |
1249 | add_ref_cm_node(cm_node); |
1250 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1251 | return cm_node; | |
1252 | } | |
1253 | } | |
1254 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1255 | ||
1256 | /* no owner node */ | |
1257 | return NULL; | |
1258 | } | |
1259 | ||
1260 | ||
1261 | /** | |
1262 | * find_listener - find a cm node listening on this addr-port pair | |
1263 | */ | |
1264 | static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core, | |
5647263c TN |
1265 | nes_addr_t dst_addr, u16 dst_port, |
1266 | enum nes_cm_listener_state listener_state, int local) | |
3c2d774c GS |
1267 | { |
1268 | unsigned long flags; | |
3c2d774c | 1269 | struct nes_cm_listener *listen_node; |
5647263c TN |
1270 | nes_addr_t listen_addr; |
1271 | u16 listen_port; | |
3c2d774c GS |
1272 | |
1273 | /* walk list and find cm_node associated with this session ID */ | |
1274 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
4e96a774 | 1275 | list_for_each_entry(listen_node, &cm_core->listen_list.list, list) { |
5647263c TN |
1276 | if (local) { |
1277 | listen_addr = listen_node->loc_addr; | |
1278 | listen_port = listen_node->loc_port; | |
1279 | } else { | |
1280 | listen_addr = listen_node->mapped_loc_addr; | |
1281 | listen_port = listen_node->mapped_loc_port; | |
1282 | } | |
3c2d774c | 1283 | /* compare node pair, return node handle if a match */ |
5647263c TN |
1284 | if (((listen_addr == dst_addr) || |
1285 | listen_addr == 0x00000000) && | |
1286 | (listen_port == dst_port) && | |
615eb715 | 1287 | (listener_state & listen_node->listener_state)) { |
3c2d774c GS |
1288 | atomic_inc(&listen_node->ref_count); |
1289 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1290 | return listen_node; | |
1291 | } | |
1292 | } | |
1293 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1294 | ||
3c2d774c GS |
1295 | /* no listener */ |
1296 | return NULL; | |
1297 | } | |
1298 | ||
3c2d774c GS |
1299 | /** |
1300 | * add_hte_node - add a cm node to the hash table | |
1301 | */ | |
1302 | static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) | |
1303 | { | |
1304 | unsigned long flags; | |
3c2d774c GS |
1305 | struct list_head *hte; |
1306 | ||
1307 | if (!cm_node || !cm_core) | |
1308 | return -EINVAL; | |
1309 | ||
6492cdf3 | 1310 | nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n", |
615eb715 | 1311 | cm_node); |
3c2d774c | 1312 | |
3c2d774c GS |
1313 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
1314 | ||
1315 | /* get a handle on the hash table element (list head for this slot) */ | |
1316 | hte = &cm_core->connected_nodes; | |
1317 | list_add_tail(&cm_node->list, hte); | |
1318 | atomic_inc(&cm_core->ht_node_cnt); | |
1319 | ||
1320 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1321 | ||
1322 | return 0; | |
1323 | } | |
1324 | ||
1325 | ||
1326 | /** | |
1327 | * mini_cm_dec_refcnt_listen | |
1328 | */ | |
1329 | static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1330 | struct nes_cm_listener *listener, int free_hanging_nodes) |
3c2d774c | 1331 | { |
9d5ab133 FL |
1332 | int ret = -EINVAL; |
1333 | int err = 0; | |
3c2d774c | 1334 | unsigned long flags; |
6492cdf3 FL |
1335 | struct list_head *list_pos = NULL; |
1336 | struct list_head *list_temp = NULL; | |
1337 | struct nes_cm_node *cm_node = NULL; | |
879e5bd5 | 1338 | struct list_head reset_list; |
6492cdf3 FL |
1339 | |
1340 | nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, " | |
615eb715 TN |
1341 | "refcnt=%d\n", listener, free_hanging_nodes, |
1342 | atomic_read(&listener->ref_count)); | |
6492cdf3 | 1343 | /* free non-accelerated child nodes for this listener */ |
879e5bd5 | 1344 | INIT_LIST_HEAD(&reset_list); |
6492cdf3 FL |
1345 | if (free_hanging_nodes) { |
1346 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
1347 | list_for_each_safe(list_pos, list_temp, | |
879e5bd5 | 1348 | &g_cm_core->connected_nodes) { |
6492cdf3 | 1349 | cm_node = container_of(list_pos, struct nes_cm_node, |
615eb715 | 1350 | list); |
6492cdf3 | 1351 | if ((cm_node->listener == listener) && |
879e5bd5 FL |
1352 | (!cm_node->accelerated)) { |
1353 | add_ref_cm_node(cm_node); | |
1354 | list_add(&cm_node->reset_entry, &reset_list); | |
6492cdf3 FL |
1355 | } |
1356 | } | |
1357 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1358 | } | |
879e5bd5 FL |
1359 | |
1360 | list_for_each_safe(list_pos, list_temp, &reset_list) { | |
1361 | cm_node = container_of(list_pos, struct nes_cm_node, | |
615eb715 | 1362 | reset_entry); |
9d5ab133 FL |
1363 | { |
1364 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
c5a7d489 | 1365 | enum nes_cm_node_state old_state; |
9d5ab133 FL |
1366 | if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) { |
1367 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1368 | } else { | |
1369 | if (!loopback) { | |
1370 | cleanup_retrans_entry(cm_node); | |
1371 | err = send_reset(cm_node, NULL); | |
1372 | if (err) { | |
1373 | cm_node->state = | |
615eb715 | 1374 | NES_CM_STATE_CLOSED; |
9d5ab133 FL |
1375 | WARN_ON(1); |
1376 | } else { | |
c5a7d489 FL |
1377 | old_state = cm_node->state; |
1378 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; | |
1379 | if (old_state != NES_CM_STATE_MPAREQ_RCVD) | |
1380 | rem_ref_cm_node( | |
1381 | cm_node->cm_core, | |
1382 | cm_node); | |
9d5ab133 FL |
1383 | } |
1384 | } else { | |
1385 | struct nes_cm_event event; | |
1386 | ||
1387 | event.cm_node = loopback; | |
1388 | event.cm_info.rem_addr = | |
1389 | loopback->rem_addr; | |
1390 | event.cm_info.loc_addr = | |
1391 | loopback->loc_addr; | |
1392 | event.cm_info.rem_port = | |
1393 | loopback->rem_port; | |
1394 | event.cm_info.loc_port = | |
1395 | loopback->loc_port; | |
1396 | event.cm_info.cm_id = loopback->cm_id; | |
43093b94 FL |
1397 | add_ref_cm_node(loopback); |
1398 | loopback->state = NES_CM_STATE_CLOSED; | |
9d5ab133 | 1399 | cm_event_connect_error(&event); |
c5a7d489 | 1400 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; |
9d5ab133 | 1401 | |
9d5ab133 FL |
1402 | rem_ref_cm_node(cm_node->cm_core, |
1403 | cm_node); | |
1404 | ||
1405 | } | |
1406 | } | |
1407 | } | |
879e5bd5 FL |
1408 | } |
1409 | ||
3c2d774c GS |
1410 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
1411 | if (!atomic_dec_return(&listener->ref_count)) { | |
1412 | list_del(&listener->list); | |
1413 | ||
1414 | /* decrement our listen node count */ | |
1415 | atomic_dec(&cm_core->listen_node_cnt); | |
1416 | ||
1417 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1418 | ||
5647263c TN |
1419 | if (listener->nesvnic) { |
1420 | nes_manage_apbvt(listener->nesvnic, | |
1421 | listener->mapped_loc_port, | |
1422 | PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn), | |
1423 | NES_MANAGE_APBVT_DEL); | |
1424 | ||
1425 | nes_remove_mapinfo(listener->loc_addr, | |
1426 | listener->loc_port, | |
1427 | listener->mapped_loc_addr, | |
1428 | listener->mapped_loc_port); | |
1429 | nes_debug(NES_DBG_NLMSG, | |
1430 | "Delete APBVT mapped_loc_port = %04X\n", | |
1431 | listener->mapped_loc_port); | |
1432 | } | |
3c2d774c GS |
1433 | |
1434 | nes_debug(NES_DBG_CM, "destroying listener (%p)\n", listener); | |
1435 | ||
1436 | kfree(listener); | |
a2e9c384 | 1437 | listener = NULL; |
3c2d774c | 1438 | ret = 0; |
6e10d2e4 | 1439 | atomic_inc(&cm_listens_destroyed); |
3c2d774c GS |
1440 | } else { |
1441 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1442 | } | |
1443 | if (listener) { | |
1444 | if (atomic_read(&listener->pend_accepts_cnt) > 0) | |
1445 | nes_debug(NES_DBG_CM, "destroying listener (%p)" | |
615eb715 TN |
1446 | " with non-zero pending accepts=%u\n", |
1447 | listener, atomic_read(&listener->pend_accepts_cnt)); | |
3c2d774c GS |
1448 | } |
1449 | ||
1450 | return ret; | |
1451 | } | |
1452 | ||
1453 | ||
1454 | /** | |
1455 | * mini_cm_del_listen | |
1456 | */ | |
1457 | static int mini_cm_del_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1458 | struct nes_cm_listener *listener) |
3c2d774c GS |
1459 | { |
1460 | listener->listener_state = NES_CM_LISTENER_PASSIVE_STATE; | |
1461 | listener->cm_id = NULL; /* going to be destroyed pretty soon */ | |
1462 | return mini_cm_dec_refcnt_listen(cm_core, listener, 1); | |
1463 | } | |
1464 | ||
1465 | ||
1466 | /** | |
1467 | * mini_cm_accelerated | |
1468 | */ | |
1469 | static inline int mini_cm_accelerated(struct nes_cm_core *cm_core, | |
615eb715 | 1470 | struct nes_cm_node *cm_node) |
3c2d774c | 1471 | { |
3c2d774c GS |
1472 | cm_node->accelerated = 1; |
1473 | ||
1474 | if (cm_node->accept_pend) { | |
1475 | BUG_ON(!cm_node->listener); | |
1476 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
9d5ab133 | 1477 | cm_node->accept_pend = 0; |
3c2d774c GS |
1478 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); |
1479 | } | |
1480 | ||
00ad255d TN |
1481 | if (!timer_pending(&cm_core->tcp_timer)) |
1482 | mod_timer(&cm_core->tcp_timer, (jiffies + NES_SHORT_TIME)); | |
3c2d774c GS |
1483 | |
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | ||
1488 | /** | |
7191a0a1 | 1489 | * nes_addr_resolve_neigh |
3c2d774c | 1490 | */ |
7a576dfd | 1491 | static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpindex) |
3c2d774c GS |
1492 | { |
1493 | struct rtable *rt; | |
7191a0a1 | 1494 | struct neighbour *neigh; |
7a576dfd | 1495 | int rc = arpindex; |
2a4c97ea | 1496 | struct net_device *netdev; |
7a576dfd | 1497 | struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter; |
3c2d774c | 1498 | |
78fbfd8a | 1499 | rt = ip_route_output(&init_net, htonl(dst_ip), 0, 0, 0); |
b23dd4fe | 1500 | if (IS_ERR(rt)) { |
9d5ab133 | 1501 | printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n", |
615eb715 | 1502 | __func__, dst_ip); |
7191a0a1 | 1503 | return rc; |
3c2d774c GS |
1504 | } |
1505 | ||
cf55bb24 | 1506 | if (netif_is_bond_slave(nesvnic->netdev)) |
7f6e7101 | 1507 | netdev = netdev_master_upper_dev_get(nesvnic->netdev); |
2a4c97ea MS |
1508 | else |
1509 | netdev = nesvnic->netdev; | |
1510 | ||
ef3d0c4a | 1511 | neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev); |
e55684fa | 1512 | |
40e2bb58 | 1513 | rcu_read_lock(); |
7191a0a1 BS |
1514 | if (neigh) { |
1515 | if (neigh->nud_state & NUD_VALID) { | |
1516 | nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X" | |
e174961c JB |
1517 | " is %pM, Gateway is 0x%08X \n", dst_ip, |
1518 | neigh->ha, ntohl(rt->rt_gateway)); | |
7a576dfd FL |
1519 | |
1520 | if (arpindex >= 0) { | |
79adc532 | 1521 | if (ether_addr_equal(nesadapter->arp_table[arpindex].mac_addr, neigh->ha)) { |
7a576dfd | 1522 | /* Mac address same as in nes_arp_table */ |
e55684fa | 1523 | goto out; |
7a576dfd FL |
1524 | } |
1525 | ||
1526 | nes_manage_arp_cache(nesvnic->netdev, | |
615eb715 TN |
1527 | nesadapter->arp_table[arpindex].mac_addr, |
1528 | dst_ip, NES_ARP_DELETE); | |
7a576dfd FL |
1529 | } |
1530 | ||
7191a0a1 BS |
1531 | nes_manage_arp_cache(nesvnic->netdev, neigh->ha, |
1532 | dst_ip, NES_ARP_ADD); | |
1533 | rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL, | |
1534 | NES_ARP_RESOLVE); | |
40e2bb58 DM |
1535 | } else { |
1536 | neigh_event_send(neigh, NULL); | |
7191a0a1 | 1537 | } |
580da35a | 1538 | } |
e55684fa | 1539 | out: |
40e2bb58 | 1540 | rcu_read_unlock(); |
e55684fa DM |
1541 | |
1542 | if (neigh) | |
1543 | neigh_release(neigh); | |
1544 | ||
3c2d774c | 1545 | ip_rt_put(rt); |
7191a0a1 | 1546 | return rc; |
3c2d774c GS |
1547 | } |
1548 | ||
3c2d774c GS |
1549 | /** |
1550 | * make_cm_node - create a new instance of a cm node | |
1551 | */ | |
1552 | static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, | |
615eb715 TN |
1553 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info, |
1554 | struct nes_cm_listener *listener) | |
3c2d774c GS |
1555 | { |
1556 | struct nes_cm_node *cm_node; | |
1557 | struct timespec ts; | |
7a576dfd | 1558 | int oldarpindex = 0; |
3c2d774c GS |
1559 | int arpindex = 0; |
1560 | struct nes_device *nesdev; | |
1561 | struct nes_adapter *nesadapter; | |
1562 | ||
1563 | /* create an hte and cm_node for this instance */ | |
1564 | cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC); | |
1565 | if (!cm_node) | |
1566 | return NULL; | |
1567 | ||
1568 | /* set our node specific transport info */ | |
1569 | cm_node->loc_addr = cm_info->loc_addr; | |
1570 | cm_node->rem_addr = cm_info->rem_addr; | |
1571 | cm_node->loc_port = cm_info->loc_port; | |
1572 | cm_node->rem_port = cm_info->rem_port; | |
615eb715 | 1573 | |
5647263c TN |
1574 | cm_node->mapped_loc_addr = cm_info->mapped_loc_addr; |
1575 | cm_node->mapped_rem_addr = cm_info->mapped_rem_addr; | |
1576 | cm_node->mapped_loc_port = cm_info->mapped_loc_port; | |
1577 | cm_node->mapped_rem_port = cm_info->mapped_rem_port; | |
1578 | ||
615eb715 TN |
1579 | cm_node->mpa_frame_rev = mpa_version; |
1580 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; | |
4ac79a70 TN |
1581 | cm_node->mpav2_ird_ord = 0; |
1582 | cm_node->ird_size = 0; | |
1583 | cm_node->ord_size = 0; | |
615eb715 | 1584 | |
63779436 HH |
1585 | nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n", |
1586 | &cm_node->loc_addr, cm_node->loc_port, | |
1587 | &cm_node->rem_addr, cm_node->rem_port); | |
3c2d774c GS |
1588 | cm_node->listener = listener; |
1589 | cm_node->netdev = nesvnic->netdev; | |
1590 | cm_node->cm_id = cm_info->cm_id; | |
1591 | memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN); | |
1592 | ||
6492cdf3 | 1593 | nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener, |
615eb715 | 1594 | cm_node->cm_id); |
3c2d774c | 1595 | |
3c2d774c | 1596 | spin_lock_init(&cm_node->retrans_list_lock); |
3c2d774c GS |
1597 | |
1598 | cm_node->loopbackpartner = NULL; | |
1599 | atomic_set(&cm_node->ref_count, 1); | |
1600 | /* associate our parent CM core */ | |
1601 | cm_node->cm_core = cm_core; | |
1602 | cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID; | |
1603 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
1604 | cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >> | |
615eb715 | 1605 | NES_CM_DEFAULT_RCV_WND_SCALE; |
3c2d774c GS |
1606 | ts = current_kernel_time(); |
1607 | cm_node->tcp_cntxt.loc_seq_num = htonl(ts.tv_nsec); | |
1608 | cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) - | |
615eb715 | 1609 | sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN; |
3c2d774c GS |
1610 | cm_node->tcp_cntxt.rcv_nxt = 0; |
1611 | /* get a unique session ID , add thread_id to an upcounter to handle race */ | |
1612 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c GS |
1613 | cm_node->conn_type = cm_info->conn_type; |
1614 | cm_node->apbvt_set = 0; | |
1615 | cm_node->accept_pend = 0; | |
1616 | ||
1617 | cm_node->nesvnic = nesvnic; | |
1618 | /* get some device handles, for arp lookup */ | |
1619 | nesdev = nesvnic->nesdev; | |
1620 | nesadapter = nesdev->nesadapter; | |
1621 | ||
1622 | cm_node->loopbackpartner = NULL; | |
7a576dfd | 1623 | |
3c2d774c | 1624 | /* get the mac addr for the remote node */ |
5647263c TN |
1625 | oldarpindex = nes_arp_table(nesdev, cm_node->mapped_rem_addr, |
1626 | NULL, NES_ARP_RESOLVE); | |
1627 | arpindex = nes_addr_resolve_neigh(nesvnic, | |
1628 | cm_node->mapped_rem_addr, oldarpindex); | |
3c2d774c | 1629 | if (arpindex < 0) { |
7a576dfd FL |
1630 | kfree(cm_node); |
1631 | return NULL; | |
3c2d774c GS |
1632 | } |
1633 | ||
1634 | /* copy the mac addr to node context */ | |
1635 | memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN); | |
e174961c JB |
1636 | nes_debug(NES_DBG_CM, "Remote mac addr from arp table: %pM\n", |
1637 | cm_node->rem_mac); | |
3c2d774c GS |
1638 | |
1639 | add_hte_node(cm_core, cm_node); | |
1640 | atomic_inc(&cm_nodes_created); | |
1641 | ||
1642 | return cm_node; | |
1643 | } | |
1644 | ||
1645 | ||
1646 | /** | |
1647 | * add_ref_cm_node - destroy an instance of a cm node | |
1648 | */ | |
1649 | static int add_ref_cm_node(struct nes_cm_node *cm_node) | |
1650 | { | |
1651 | atomic_inc(&cm_node->ref_count); | |
1652 | return 0; | |
1653 | } | |
1654 | ||
1655 | ||
1656 | /** | |
1657 | * rem_ref_cm_node - destroy an instance of a cm node | |
1658 | */ | |
1659 | static int rem_ref_cm_node(struct nes_cm_core *cm_core, | |
615eb715 | 1660 | struct nes_cm_node *cm_node) |
3c2d774c | 1661 | { |
9d5ab133 | 1662 | unsigned long flags; |
3c2d774c GS |
1663 | struct nes_qp *nesqp; |
1664 | ||
1665 | if (!cm_node) | |
1666 | return -EINVAL; | |
1667 | ||
1668 | spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags); | |
1669 | if (atomic_dec_return(&cm_node->ref_count)) { | |
1670 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1671 | return 0; | |
1672 | } | |
1673 | list_del(&cm_node->list); | |
1674 | atomic_dec(&cm_core->ht_node_cnt); | |
1675 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1676 | ||
1677 | /* if the node is destroyed before connection was accelerated */ | |
1678 | if (!cm_node->accelerated && cm_node->accept_pend) { | |
1679 | BUG_ON(!cm_node->listener); | |
1680 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
1681 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); | |
1682 | } | |
9d5ab133 FL |
1683 | WARN_ON(cm_node->send_entry); |
1684 | if (cm_node->recv_entry) | |
1685 | handle_recv_entry(cm_node, 0); | |
3c2d774c GS |
1686 | if (cm_node->listener) { |
1687 | mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0); | |
1688 | } else { | |
1689 | if (cm_node->apbvt_set && cm_node->nesvnic) { | |
5647263c TN |
1690 | nes_manage_apbvt(cm_node->nesvnic, cm_node->mapped_loc_port, |
1691 | PCI_FUNC(cm_node->nesvnic->nesdev->pcidev->devfn), | |
615eb715 | 1692 | NES_MANAGE_APBVT_DEL); |
3c2d774c | 1693 | } |
5647263c TN |
1694 | nes_debug(NES_DBG_NLMSG, "Delete APBVT mapped_loc_port = %04X\n", |
1695 | cm_node->mapped_loc_port); | |
1696 | nes_remove_mapinfo(cm_node->loc_addr, cm_node->loc_port, | |
1697 | cm_node->mapped_loc_addr, cm_node->mapped_loc_port); | |
3c2d774c GS |
1698 | } |
1699 | ||
3c2d774c GS |
1700 | atomic_dec(&cm_core->node_cnt); |
1701 | atomic_inc(&cm_nodes_destroyed); | |
6492cdf3 FL |
1702 | nesqp = cm_node->nesqp; |
1703 | if (nesqp) { | |
1704 | nesqp->cm_node = NULL; | |
1705 | nes_rem_ref(&nesqp->ibqp); | |
1706 | cm_node->nesqp = NULL; | |
1707 | } | |
3c2d774c | 1708 | |
6492cdf3 | 1709 | kfree(cm_node); |
3c2d774c GS |
1710 | return 0; |
1711 | } | |
1712 | ||
3c2d774c GS |
1713 | /** |
1714 | * process_options | |
1715 | */ | |
6492cdf3 | 1716 | static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, |
615eb715 | 1717 | u32 optionsize, u32 syn_packet) |
3c2d774c GS |
1718 | { |
1719 | u32 tmp; | |
1720 | u32 offset = 0; | |
1721 | union all_known_options *all_options; | |
1722 | char got_mss_option = 0; | |
1723 | ||
1724 | while (offset < optionsize) { | |
1725 | all_options = (union all_known_options *)(optionsloc + offset); | |
1726 | switch (all_options->as_base.optionnum) { | |
6492cdf3 FL |
1727 | case OPTION_NUMBER_END: |
1728 | offset = optionsize; | |
1729 | break; | |
1730 | case OPTION_NUMBER_NONE: | |
1731 | offset += 1; | |
1732 | continue; | |
1733 | case OPTION_NUMBER_MSS: | |
1734 | nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d " | |
615eb715 TN |
1735 | "Size: %d\n", __func__, |
1736 | all_options->as_mss.length, offset, optionsize); | |
6492cdf3 FL |
1737 | got_mss_option = 1; |
1738 | if (all_options->as_mss.length != 4) { | |
1739 | return 1; | |
1740 | } else { | |
1741 | tmp = ntohs(all_options->as_mss.mss); | |
1742 | if (tmp > 0 && tmp < | |
615eb715 | 1743 | cm_node->tcp_cntxt.mss) |
6492cdf3 FL |
1744 | cm_node->tcp_cntxt.mss = tmp; |
1745 | } | |
1746 | break; | |
1747 | case OPTION_NUMBER_WINDOW_SCALE: | |
1748 | cm_node->tcp_cntxt.snd_wscale = | |
1749 | all_options->as_windowscale.shiftcount; | |
1750 | break; | |
6492cdf3 FL |
1751 | default: |
1752 | nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n", | |
615eb715 | 1753 | all_options->as_base.optionnum); |
6492cdf3 | 1754 | break; |
3c2d774c GS |
1755 | } |
1756 | offset += all_options->as_base.length; | |
1757 | } | |
1758 | if ((!got_mss_option) && (syn_packet)) | |
1759 | cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS; | |
1760 | return 0; | |
1761 | } | |
1762 | ||
6492cdf3 FL |
1763 | static void drop_packet(struct sk_buff *skb) |
1764 | { | |
1765 | atomic_inc(&cm_accel_dropped_pkts); | |
1766 | dev_kfree_skb_any(skb); | |
1767 | } | |
3c2d774c | 1768 | |
9d5ab133 | 1769 | static void handle_fin_pkt(struct nes_cm_node *cm_node) |
3c2d774c | 1770 | { |
6492cdf3 | 1771 | nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. " |
615eb715 TN |
1772 | "refcnt=%d\n", cm_node, cm_node->state, |
1773 | atomic_read(&cm_node->ref_count)); | |
6492cdf3 FL |
1774 | switch (cm_node->state) { |
1775 | case NES_CM_STATE_SYN_RCVD: | |
1776 | case NES_CM_STATE_SYN_SENT: | |
1777 | case NES_CM_STATE_ESTABLISHED: | |
9d5ab133 | 1778 | case NES_CM_STATE_MPAREJ_RCVD: |
109d67e4 FL |
1779 | cm_node->tcp_cntxt.rcv_nxt++; |
1780 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1781 | cm_node->state = NES_CM_STATE_LAST_ACK; |
9d5ab133 | 1782 | send_fin(cm_node, NULL); |
6492cdf3 | 1783 | break; |
b1190d3e FL |
1784 | case NES_CM_STATE_MPAREQ_SENT: |
1785 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
1786 | cm_node->tcp_cntxt.rcv_nxt++; | |
1787 | cleanup_retrans_entry(cm_node); | |
1788 | cm_node->state = NES_CM_STATE_CLOSED; | |
1789 | add_ref_cm_node(cm_node); | |
1790 | send_reset(cm_node, NULL); | |
1791 | break; | |
6492cdf3 | 1792 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1793 | cm_node->tcp_cntxt.rcv_nxt++; |
1794 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1795 | cm_node->state = NES_CM_STATE_CLOSING; |
9d5ab133 | 1796 | send_ack(cm_node, NULL); |
25985edc | 1797 | /* Wait for ACK as this is simultaneous close.. |
9d5ab133 FL |
1798 | * After we receive ACK, do not send anything.. |
1799 | * Just rm the node.. Done.. */ | |
6492cdf3 FL |
1800 | break; |
1801 | case NES_CM_STATE_FIN_WAIT2: | |
109d67e4 FL |
1802 | cm_node->tcp_cntxt.rcv_nxt++; |
1803 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1804 | cm_node->state = NES_CM_STATE_TIME_WAIT; |
9d5ab133 FL |
1805 | send_ack(cm_node, NULL); |
1806 | schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0); | |
1807 | break; | |
1808 | case NES_CM_STATE_TIME_WAIT: | |
109d67e4 FL |
1809 | cm_node->tcp_cntxt.rcv_nxt++; |
1810 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1811 | cm_node->state = NES_CM_STATE_CLOSED; |
9d5ab133 | 1812 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
6492cdf3 FL |
1813 | break; |
1814 | case NES_CM_STATE_TSA: | |
1815 | default: | |
1816 | nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n", | |
1817 | cm_node, cm_node->state); | |
6492cdf3 | 1818 | break; |
3c2d774c | 1819 | } |
6492cdf3 | 1820 | } |
3c2d774c | 1821 | |
3c2d774c | 1822 | |
6492cdf3 FL |
1823 | static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
1824 | struct tcphdr *tcph) | |
1825 | { | |
3c2d774c | 1826 | |
6492cdf3 FL |
1827 | int reset = 0; /* whether to send reset in case of err.. */ |
1828 | atomic_inc(&cm_resets_recvd); | |
1829 | nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." | |
1830 | " refcnt=%d\n", cm_node, cm_node->state, | |
1831 | atomic_read(&cm_node->ref_count)); | |
1832 | cleanup_retrans_entry(cm_node); | |
1833 | switch (cm_node->state) { | |
1834 | case NES_CM_STATE_SYN_SENT: | |
1835 | case NES_CM_STATE_MPAREQ_SENT: | |
1836 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
1837 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, | |
1838 | cm_node->listener, cm_node->state); | |
615eb715 TN |
1839 | switch (cm_node->mpa_frame_rev) { |
1840 | case IETF_MPA_V2: | |
1841 | cm_node->mpa_frame_rev = IETF_MPA_V1; | |
1842 | /* send a syn and goto syn sent state */ | |
1843 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
1844 | if (send_syn(cm_node, 0, NULL)) { | |
1845 | active_open_err(cm_node, skb, reset); | |
1846 | } | |
1847 | break; | |
1848 | case IETF_MPA_V1: | |
1849 | default: | |
1850 | active_open_err(cm_node, skb, reset); | |
1851 | break; | |
1852 | } | |
6492cdf3 | 1853 | break; |
183ecfa3 | 1854 | case NES_CM_STATE_MPAREQ_RCVD: |
4d8d6389 | 1855 | atomic_inc(&cm_node->passive_state); |
183ecfa3 FL |
1856 | dev_kfree_skb_any(skb); |
1857 | break; | |
6492cdf3 FL |
1858 | case NES_CM_STATE_ESTABLISHED: |
1859 | case NES_CM_STATE_SYN_RCVD: | |
1860 | case NES_CM_STATE_LISTENING: | |
1861 | nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__); | |
1862 | passive_open_err(cm_node, skb, reset); | |
1863 | break; | |
1864 | case NES_CM_STATE_TSA: | |
183ecfa3 FL |
1865 | active_open_err(cm_node, skb, reset); |
1866 | break; | |
1867 | case NES_CM_STATE_CLOSED: | |
183ecfa3 FL |
1868 | drop_packet(skb); |
1869 | break; | |
dae58728 | 1870 | case NES_CM_STATE_FIN_WAIT2: |
68237a0f | 1871 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1872 | case NES_CM_STATE_LAST_ACK: |
1873 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 | 1874 | case NES_CM_STATE_TIME_WAIT: |
9d5ab133 FL |
1875 | cm_node->state = NES_CM_STATE_CLOSED; |
1876 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1877 | drop_packet(skb); | |
1878 | break; | |
6492cdf3 | 1879 | default: |
183ecfa3 | 1880 | drop_packet(skb); |
6492cdf3 FL |
1881 | break; |
1882 | } | |
1883 | } | |
3c2d774c | 1884 | |
9d5ab133 FL |
1885 | |
1886 | static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
6492cdf3 | 1887 | { |
615eb715 | 1888 | int ret = 0; |
6492cdf3 FL |
1889 | int datasize = skb->len; |
1890 | u8 *dataloc = skb->data; | |
9d5ab133 FL |
1891 | |
1892 | enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN; | |
615eb715 TN |
1893 | u32 res_type; |
1894 | ||
9d5ab133 FL |
1895 | ret = parse_mpa(cm_node, dataloc, &res_type, datasize); |
1896 | if (ret) { | |
6492cdf3 | 1897 | nes_debug(NES_DBG_CM, "didn't like MPA Request\n"); |
9d5ab133 | 1898 | if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) { |
6492cdf3 | 1899 | nes_debug(NES_DBG_CM, "%s[%u] create abort for " |
615eb715 TN |
1900 | "cm_node=%p listener=%p state=%d\n", __func__, |
1901 | __LINE__, cm_node, cm_node->listener, | |
1902 | cm_node->state); | |
6492cdf3 FL |
1903 | active_open_err(cm_node, skb, 1); |
1904 | } else { | |
1905 | passive_open_err(cm_node, skb, 1); | |
3c2d774c | 1906 | } |
9d5ab133 FL |
1907 | return; |
1908 | } | |
1909 | ||
1910 | switch (cm_node->state) { | |
1911 | case NES_CM_STATE_ESTABLISHED: | |
615eb715 | 1912 | if (res_type == NES_MPA_REQUEST_REJECT) |
9d5ab133 | 1913 | /*BIG problem as we are receiving the MPA.. So should |
615eb715 TN |
1914 | * not be REJECT.. This is Passive Open.. We can |
1915 | * only receive it Reject for Active Open...*/ | |
9d5ab133 | 1916 | WARN_ON(1); |
9d5ab133 FL |
1917 | cm_node->state = NES_CM_STATE_MPAREQ_RCVD; |
1918 | type = NES_CM_EVENT_MPA_REQ; | |
1919 | atomic_set(&cm_node->passive_state, | |
615eb715 | 1920 | NES_PASSIVE_STATE_INDICATED); |
9d5ab133 FL |
1921 | break; |
1922 | case NES_CM_STATE_MPAREQ_SENT: | |
109d67e4 | 1923 | cleanup_retrans_entry(cm_node); |
9d5ab133 FL |
1924 | if (res_type == NES_MPA_REQUEST_REJECT) { |
1925 | type = NES_CM_EVENT_MPA_REJECT; | |
1926 | cm_node->state = NES_CM_STATE_MPAREJ_RCVD; | |
1927 | } else { | |
1928 | type = NES_CM_EVENT_CONNECTED; | |
6492cdf3 | 1929 | cm_node->state = NES_CM_STATE_TSA; |
9d5ab133 | 1930 | } |
6492cdf3 | 1931 | |
9d5ab133 FL |
1932 | break; |
1933 | default: | |
1934 | WARN_ON(1); | |
1935 | break; | |
6492cdf3 | 1936 | } |
9d5ab133 FL |
1937 | dev_kfree_skb_any(skb); |
1938 | create_event(cm_node, type); | |
6492cdf3 FL |
1939 | } |
1940 | ||
1941 | static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
1942 | { | |
1943 | switch (cm_node->state) { | |
1944 | case NES_CM_STATE_SYN_SENT: | |
1945 | case NES_CM_STATE_MPAREQ_SENT: | |
1946 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1947 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1948 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1949 | active_open_err(cm_node, skb, 1); |
1950 | break; | |
1951 | case NES_CM_STATE_ESTABLISHED: | |
1952 | case NES_CM_STATE_SYN_RCVD: | |
1953 | passive_open_err(cm_node, skb, 1); | |
1954 | break; | |
1955 | case NES_CM_STATE_TSA: | |
1956 | default: | |
1957 | drop_packet(skb); | |
3c2d774c | 1958 | } |
6492cdf3 FL |
1959 | } |
1960 | ||
1961 | static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1962 | struct sk_buff *skb) |
6492cdf3 FL |
1963 | { |
1964 | int err; | |
1965 | ||
615eb715 | 1966 | err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num)) ? 0 : 1; |
6492cdf3 FL |
1967 | if (err) |
1968 | active_open_err(cm_node, skb, 1); | |
1969 | ||
1970 | return err; | |
1971 | } | |
1972 | ||
1973 | static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1974 | struct sk_buff *skb) |
6492cdf3 FL |
1975 | { |
1976 | int err = 0; | |
1977 | u32 seq; | |
1978 | u32 ack_seq; | |
1979 | u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num; | |
1980 | u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; | |
1981 | u32 rcv_wnd; | |
615eb715 | 1982 | |
6492cdf3 FL |
1983 | seq = ntohl(tcph->seq); |
1984 | ack_seq = ntohl(tcph->ack_seq); | |
1985 | rcv_wnd = cm_node->tcp_cntxt.rcv_wnd; | |
1986 | if (ack_seq != loc_seq_num) | |
1987 | err = 1; | |
615eb715 | 1988 | else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd))) |
6492cdf3 FL |
1989 | err = 1; |
1990 | if (err) { | |
1991 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1992 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1993 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1994 | indicate_pkt_err(cm_node, skb); |
1995 | nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X " | |
615eb715 TN |
1996 | "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt, |
1997 | rcv_wnd); | |
6492cdf3 FL |
1998 | } |
1999 | return err; | |
2000 | } | |
2001 | ||
2002 | /* | |
2003 | * handle_syn_pkt() is for Passive node. The syn packet is received when a node | |
2004 | * is created with a listener or it may comein as rexmitted packet which in | |
2005 | * that case will be just dropped. | |
2006 | */ | |
6492cdf3 | 2007 | static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2008 | struct tcphdr *tcph) |
6492cdf3 FL |
2009 | { |
2010 | int ret; | |
2011 | u32 inc_sequence; | |
2012 | int optionsize; | |
3c2d774c GS |
2013 | |
2014 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 2015 | skb_trim(skb, 0); |
6492cdf3 | 2016 | inc_sequence = ntohl(tcph->seq); |
3c2d774c | 2017 | |
6492cdf3 FL |
2018 | switch (cm_node->state) { |
2019 | case NES_CM_STATE_SYN_SENT: | |
2020 | case NES_CM_STATE_MPAREQ_SENT: | |
2021 | /* Rcvd syn on active open connection*/ | |
2022 | active_open_err(cm_node, skb, 1); | |
2023 | break; | |
2024 | case NES_CM_STATE_LISTENING: | |
2025 | /* Passive OPEN */ | |
6492cdf3 | 2026 | if (atomic_read(&cm_node->listener->pend_accepts_cnt) > |
615eb715 | 2027 | cm_node->listener->backlog) { |
6492cdf3 | 2028 | nes_debug(NES_DBG_CM, "drop syn due to backlog " |
615eb715 | 2029 | "pressure \n"); |
6492cdf3 FL |
2030 | cm_backlog_drops++; |
2031 | passive_open_err(cm_node, skb, 0); | |
2032 | break; | |
2033 | } | |
2034 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, | |
615eb715 | 2035 | 1); |
6492cdf3 FL |
2036 | if (ret) { |
2037 | passive_open_err(cm_node, skb, 0); | |
2038 | /* drop pkt */ | |
2039 | break; | |
2040 | } | |
2041 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
2042 | BUG_ON(cm_node->send_entry); | |
9d5ab133 FL |
2043 | cm_node->accept_pend = 1; |
2044 | atomic_inc(&cm_node->listener->pend_accepts_cnt); | |
2045 | ||
6492cdf3 FL |
2046 | cm_node->state = NES_CM_STATE_SYN_RCVD; |
2047 | send_syn(cm_node, 1, skb); | |
2048 | break; | |
abb77256 FL |
2049 | case NES_CM_STATE_CLOSED: |
2050 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2051 | add_ref_cm_node(cm_node); |
abb77256 FL |
2052 | send_reset(cm_node, skb); |
2053 | break; | |
6492cdf3 FL |
2054 | case NES_CM_STATE_TSA: |
2055 | case NES_CM_STATE_ESTABLISHED: | |
2056 | case NES_CM_STATE_FIN_WAIT1: | |
2057 | case NES_CM_STATE_FIN_WAIT2: | |
2058 | case NES_CM_STATE_MPAREQ_RCVD: | |
2059 | case NES_CM_STATE_LAST_ACK: | |
2060 | case NES_CM_STATE_CLOSING: | |
2061 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
2062 | default: |
2063 | drop_packet(skb); | |
2064 | break; | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 2069 | struct tcphdr *tcph) |
6492cdf3 | 2070 | { |
6492cdf3 FL |
2071 | int ret; |
2072 | u32 inc_sequence; | |
2073 | int optionsize; | |
2074 | ||
2075 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 2076 | skb_trim(skb, 0); |
6492cdf3 FL |
2077 | inc_sequence = ntohl(tcph->seq); |
2078 | switch (cm_node->state) { | |
2079 | case NES_CM_STATE_SYN_SENT: | |
9d5ab133 | 2080 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2081 | /* active open */ |
2082 | if (check_syn(cm_node, tcph, skb)) | |
2083 | return; | |
2084 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
2085 | /* setup options */ | |
2086 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0); | |
2087 | if (ret) { | |
2088 | nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n", | |
615eb715 | 2089 | cm_node); |
6492cdf3 FL |
2090 | break; |
2091 | } | |
2092 | cleanup_retrans_entry(cm_node); | |
2093 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
2094 | send_mpa_request(cm_node, skb); | |
2095 | cm_node->state = NES_CM_STATE_MPAREQ_SENT; | |
2096 | break; | |
2097 | case NES_CM_STATE_MPAREQ_RCVD: | |
2098 | /* passive open, so should not be here */ | |
2099 | passive_open_err(cm_node, skb, 1); | |
2100 | break; | |
abb77256 | 2101 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
2102 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
2103 | cleanup_retrans_entry(cm_node); | |
2104 | cm_node->state = NES_CM_STATE_CLOSED; | |
2105 | send_reset(cm_node, skb); | |
2106 | break; | |
abb77256 FL |
2107 | case NES_CM_STATE_CLOSED: |
2108 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); | |
2109 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2110 | add_ref_cm_node(cm_node); |
abb77256 FL |
2111 | send_reset(cm_node, skb); |
2112 | break; | |
6492cdf3 FL |
2113 | case NES_CM_STATE_ESTABLISHED: |
2114 | case NES_CM_STATE_FIN_WAIT1: | |
2115 | case NES_CM_STATE_FIN_WAIT2: | |
2116 | case NES_CM_STATE_LAST_ACK: | |
2117 | case NES_CM_STATE_TSA: | |
2118 | case NES_CM_STATE_CLOSING: | |
2119 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
2120 | case NES_CM_STATE_MPAREQ_SENT: |
2121 | default: | |
2122 | drop_packet(skb); | |
2123 | break; | |
2124 | } | |
2125 | } | |
3c2d774c | 2126 | |
109d67e4 | 2127 | static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2128 | struct tcphdr *tcph) |
6492cdf3 FL |
2129 | { |
2130 | int datasize = 0; | |
2131 | u32 inc_sequence; | |
109d67e4 | 2132 | int ret = 0; |
abb77256 | 2133 | int optionsize; |
615eb715 | 2134 | |
abb77256 | 2135 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
abb77256 | 2136 | |
6492cdf3 | 2137 | if (check_seq(cm_node, tcph, skb)) |
109d67e4 | 2138 | return -EINVAL; |
6492cdf3 FL |
2139 | |
2140 | skb_pull(skb, tcph->doff << 2); | |
3c2d774c | 2141 | inc_sequence = ntohl(tcph->seq); |
6492cdf3 | 2142 | datasize = skb->len; |
6492cdf3 FL |
2143 | switch (cm_node->state) { |
2144 | case NES_CM_STATE_SYN_RCVD: | |
2145 | /* Passive OPEN */ | |
109d67e4 | 2146 | cleanup_retrans_entry(cm_node); |
abb77256 FL |
2147 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1); |
2148 | if (ret) | |
2149 | break; | |
6492cdf3 FL |
2150 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
2151 | cm_node->state = NES_CM_STATE_ESTABLISHED; | |
2152 | if (datasize) { | |
2153 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 2154 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2155 | } else { /* rcvd ACK only */ |
6492cdf3 | 2156 | dev_kfree_skb_any(skb); |
615eb715 | 2157 | } |
6492cdf3 FL |
2158 | break; |
2159 | case NES_CM_STATE_ESTABLISHED: | |
2160 | /* Passive OPEN */ | |
9d5ab133 | 2161 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2162 | if (datasize) { |
2163 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 2164 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2165 | } else { |
6492cdf3 | 2166 | drop_packet(skb); |
615eb715 | 2167 | } |
6492cdf3 FL |
2168 | break; |
2169 | case NES_CM_STATE_MPAREQ_SENT: | |
2170 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
2171 | if (datasize) { | |
2172 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 2173 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2174 | } else { /* Could be just an ack pkt.. */ |
6492cdf3 | 2175 | dev_kfree_skb_any(skb); |
615eb715 | 2176 | } |
6492cdf3 | 2177 | break; |
abb77256 | 2178 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
2179 | cleanup_retrans_entry(cm_node); |
2180 | cm_node->state = NES_CM_STATE_CLOSED; | |
2181 | send_reset(cm_node, skb); | |
2182 | break; | |
abb77256 FL |
2183 | case NES_CM_STATE_CLOSED: |
2184 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2185 | add_ref_cm_node(cm_node); |
abb77256 FL |
2186 | send_reset(cm_node, skb); |
2187 | break; | |
9d5ab133 | 2188 | case NES_CM_STATE_LAST_ACK: |
109d67e4 | 2189 | case NES_CM_STATE_CLOSING: |
9d5ab133 FL |
2190 | cleanup_retrans_entry(cm_node); |
2191 | cm_node->state = NES_CM_STATE_CLOSED; | |
2192 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 FL |
2193 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2194 | drop_packet(skb); | |
2195 | break; | |
6492cdf3 | 2196 | case NES_CM_STATE_FIN_WAIT1: |
9d5ab133 FL |
2197 | cleanup_retrans_entry(cm_node); |
2198 | drop_packet(skb); | |
2199 | cm_node->state = NES_CM_STATE_FIN_WAIT2; | |
2200 | break; | |
6492cdf3 FL |
2201 | case NES_CM_STATE_SYN_SENT: |
2202 | case NES_CM_STATE_FIN_WAIT2: | |
2203 | case NES_CM_STATE_TSA: | |
6492cdf3 | 2204 | case NES_CM_STATE_MPAREQ_RCVD: |
6492cdf3 FL |
2205 | case NES_CM_STATE_UNKNOWN: |
2206 | default: | |
109d67e4 | 2207 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2208 | drop_packet(skb); |
2209 | break; | |
3c2d774c | 2210 | } |
109d67e4 | 2211 | return ret; |
6492cdf3 | 2212 | } |
3c2d774c | 2213 | |
3c2d774c GS |
2214 | |
2215 | ||
6492cdf3 | 2216 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, |
615eb715 | 2217 | struct sk_buff *skb, int optionsize, int passive) |
6492cdf3 FL |
2218 | { |
2219 | u8 *optionsloc = (u8 *)&tcph[1]; | |
615eb715 | 2220 | |
3c2d774c | 2221 | if (optionsize) { |
6492cdf3 | 2222 | if (process_options(cm_node, optionsloc, optionsize, |
615eb715 | 2223 | (u32)tcph->syn)) { |
6492cdf3 | 2224 | nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n", |
615eb715 | 2225 | __func__, cm_node); |
6492cdf3 | 2226 | if (passive) |
abb77256 | 2227 | passive_open_err(cm_node, skb, 1); |
6492cdf3 | 2228 | else |
abb77256 | 2229 | active_open_err(cm_node, skb, 1); |
6492cdf3 | 2230 | return 1; |
3c2d774c | 2231 | } |
6492cdf3 | 2232 | } |
3c2d774c GS |
2233 | |
2234 | cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) << | |
615eb715 | 2235 | cm_node->tcp_cntxt.snd_wscale; |
3c2d774c | 2236 | |
6492cdf3 | 2237 | if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd) |
3c2d774c | 2238 | cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd; |
6492cdf3 FL |
2239 | return 0; |
2240 | } | |
3c2d774c | 2241 | |
6492cdf3 FL |
2242 | /* |
2243 | * active_open_err() will send reset() if flag set.. | |
2244 | * It will also send ABORT event. | |
2245 | */ | |
6492cdf3 | 2246 | static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2247 | int reset) |
6492cdf3 FL |
2248 | { |
2249 | cleanup_retrans_entry(cm_node); | |
2250 | if (reset) { | |
2251 | nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, " | |
615eb715 | 2252 | "state=%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2253 | add_ref_cm_node(cm_node); |
2254 | send_reset(cm_node, skb); | |
615eb715 | 2255 | } else { |
6492cdf3 | 2256 | dev_kfree_skb_any(skb); |
615eb715 | 2257 | } |
3c2d774c | 2258 | |
6492cdf3 FL |
2259 | cm_node->state = NES_CM_STATE_CLOSED; |
2260 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2261 | } | |
3c2d774c | 2262 | |
6492cdf3 FL |
2263 | /* |
2264 | * passive_open_err() will either do a reset() or will free up the skb and | |
2265 | * remove the cm_node. | |
2266 | */ | |
6492cdf3 | 2267 | static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2268 | int reset) |
6492cdf3 FL |
2269 | { |
2270 | cleanup_retrans_entry(cm_node); | |
2271 | cm_node->state = NES_CM_STATE_CLOSED; | |
2272 | if (reset) { | |
2273 | nes_debug(NES_DBG_CM, "passive_open_err sending RST for " | |
615eb715 | 2274 | "cm_node=%p state =%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2275 | send_reset(cm_node, skb); |
2276 | } else { | |
2277 | dev_kfree_skb_any(skb); | |
2278 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2279 | } |
6492cdf3 | 2280 | } |
3c2d774c | 2281 | |
6492cdf3 FL |
2282 | /* |
2283 | * free_retrans_entry() routines assumes that the retrans_list_lock has | |
2284 | * been acquired before calling. | |
2285 | */ | |
2286 | static void free_retrans_entry(struct nes_cm_node *cm_node) | |
2287 | { | |
2288 | struct nes_timer_entry *send_entry; | |
615eb715 | 2289 | |
6492cdf3 FL |
2290 | send_entry = cm_node->send_entry; |
2291 | if (send_entry) { | |
2292 | cm_node->send_entry = NULL; | |
2293 | dev_kfree_skb_any(send_entry->skb); | |
2294 | kfree(send_entry); | |
2295 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2296 | } |
6492cdf3 | 2297 | } |
3c2d774c | 2298 | |
6492cdf3 FL |
2299 | static void cleanup_retrans_entry(struct nes_cm_node *cm_node) |
2300 | { | |
2301 | unsigned long flags; | |
3c2d774c | 2302 | |
6492cdf3 FL |
2303 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
2304 | free_retrans_entry(cm_node); | |
2305 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
3c2d774c GS |
2306 | } |
2307 | ||
6492cdf3 FL |
2308 | /** |
2309 | * process_packet | |
2310 | * Returns skb if to be freed, else it will return NULL if already used.. | |
2311 | */ | |
2312 | static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 2313 | struct nes_cm_core *cm_core) |
6492cdf3 | 2314 | { |
615eb715 | 2315 | enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN; |
6492cdf3 | 2316 | struct tcphdr *tcph = tcp_hdr(skb); |
615eb715 | 2317 | u32 fin_set = 0; |
109d67e4 | 2318 | int ret = 0; |
615eb715 | 2319 | |
6492cdf3 FL |
2320 | skb_pull(skb, ip_hdr(skb)->ihl << 2); |
2321 | ||
2322 | nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d " | |
615eb715 TN |
2323 | "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn, |
2324 | tcph->ack, tcph->rst, tcph->fin); | |
6492cdf3 | 2325 | |
615eb715 | 2326 | if (tcph->rst) { |
6492cdf3 | 2327 | pkt_type = NES_PKT_TYPE_RST; |
615eb715 | 2328 | } else if (tcph->syn) { |
6492cdf3 FL |
2329 | pkt_type = NES_PKT_TYPE_SYN; |
2330 | if (tcph->ack) | |
2331 | pkt_type = NES_PKT_TYPE_SYNACK; | |
615eb715 | 2332 | } else if (tcph->ack) { |
6492cdf3 | 2333 | pkt_type = NES_PKT_TYPE_ACK; |
615eb715 | 2334 | } |
9d5ab133 FL |
2335 | if (tcph->fin) |
2336 | fin_set = 1; | |
6492cdf3 FL |
2337 | |
2338 | switch (pkt_type) { | |
2339 | case NES_PKT_TYPE_SYN: | |
2340 | handle_syn_pkt(cm_node, skb, tcph); | |
2341 | break; | |
2342 | case NES_PKT_TYPE_SYNACK: | |
2343 | handle_synack_pkt(cm_node, skb, tcph); | |
2344 | break; | |
2345 | case NES_PKT_TYPE_ACK: | |
109d67e4 FL |
2346 | ret = handle_ack_pkt(cm_node, skb, tcph); |
2347 | if (fin_set && !ret) | |
9d5ab133 | 2348 | handle_fin_pkt(cm_node); |
6492cdf3 FL |
2349 | break; |
2350 | case NES_PKT_TYPE_RST: | |
2351 | handle_rst_pkt(cm_node, skb, tcph); | |
2352 | break; | |
6492cdf3 | 2353 | default: |
109d67e4 | 2354 | if ((fin_set) && (!check_seq(cm_node, tcph, skb))) |
9d5ab133 | 2355 | handle_fin_pkt(cm_node); |
109d67e4 | 2356 | drop_packet(skb); |
6492cdf3 FL |
2357 | break; |
2358 | } | |
2359 | } | |
3c2d774c GS |
2360 | |
2361 | /** | |
2362 | * mini_cm_listen - create a listen node with params | |
2363 | */ | |
2364 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, | |
5647263c | 2365 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info) |
3c2d774c GS |
2366 | { |
2367 | struct nes_cm_listener *listener; | |
5647263c TN |
2368 | struct iwpm_dev_data pm_reg_msg; |
2369 | struct iwpm_sa_data pm_msg; | |
3c2d774c | 2370 | unsigned long flags; |
5647263c | 2371 | int iwpm_err = 0; |
3c2d774c GS |
2372 | |
2373 | nes_debug(NES_DBG_CM, "Search for 0x%08x : 0x%04x\n", | |
615eb715 | 2374 | cm_info->loc_addr, cm_info->loc_port); |
3c2d774c GS |
2375 | |
2376 | /* cannot have multiple matching listeners */ | |
5647263c TN |
2377 | listener = find_listener(cm_core, cm_info->loc_addr, cm_info->loc_port, |
2378 | NES_CM_LISTENER_EITHER_STATE, 1); | |
2379 | ||
3c2d774c GS |
2380 | if (listener && listener->listener_state == NES_CM_LISTENER_ACTIVE_STATE) { |
2381 | /* find automatically incs ref count ??? */ | |
2382 | atomic_dec(&listener->ref_count); | |
2383 | nes_debug(NES_DBG_CM, "Not creating listener since it already exists\n"); | |
2384 | return NULL; | |
2385 | } | |
2386 | ||
2387 | if (!listener) { | |
5647263c TN |
2388 | nes_form_reg_msg(nesvnic, &pm_reg_msg); |
2389 | iwpm_err = iwpm_register_pid(&pm_reg_msg, RDMA_NL_NES); | |
2390 | if (iwpm_err) { | |
2391 | nes_debug(NES_DBG_NLMSG, | |
2392 | "Port Mapper reg pid fail (err = %d).\n", iwpm_err); | |
2393 | } | |
2394 | if (iwpm_valid_pid() && !iwpm_err) { | |
2395 | nes_form_pm_msg(cm_info, &pm_msg); | |
2396 | iwpm_err = iwpm_add_mapping(&pm_msg, RDMA_NL_NES); | |
2397 | if (iwpm_err) | |
2398 | nes_debug(NES_DBG_NLMSG, | |
2399 | "Port Mapper query fail (err = %d).\n", iwpm_err); | |
2400 | else | |
2401 | nes_record_pm_msg(cm_info, &pm_msg); | |
2402 | } | |
2403 | ||
3c2d774c GS |
2404 | /* create a CM listen node (1/2 node to compare incoming traffic to) */ |
2405 | listener = kzalloc(sizeof(*listener), GFP_ATOMIC); | |
2406 | if (!listener) { | |
2407 | nes_debug(NES_DBG_CM, "Not creating listener memory allocation failed\n"); | |
2408 | return NULL; | |
2409 | } | |
2410 | ||
5647263c TN |
2411 | listener->loc_addr = cm_info->loc_addr; |
2412 | listener->loc_port = cm_info->loc_port; | |
2413 | listener->mapped_loc_addr = cm_info->mapped_loc_addr; | |
2414 | listener->mapped_loc_port = cm_info->mapped_loc_port; | |
3c2d774c GS |
2415 | listener->reused_node = 0; |
2416 | ||
2417 | atomic_set(&listener->ref_count, 1); | |
2418 | } | |
2419 | /* pasive case */ | |
2420 | /* find already inc'ed the ref count */ | |
2421 | else { | |
2422 | listener->reused_node = 1; | |
2423 | } | |
2424 | ||
2425 | listener->cm_id = cm_info->cm_id; | |
2426 | atomic_set(&listener->pend_accepts_cnt, 0); | |
2427 | listener->cm_core = cm_core; | |
2428 | listener->nesvnic = nesvnic; | |
2429 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c | 2430 | |
3c2d774c GS |
2431 | listener->conn_type = cm_info->conn_type; |
2432 | listener->backlog = cm_info->backlog; | |
2433 | listener->listener_state = NES_CM_LISTENER_ACTIVE_STATE; | |
2434 | ||
2435 | if (!listener->reused_node) { | |
2436 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
2437 | list_add(&listener->list, &cm_core->listen_list.list); | |
2438 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
2439 | atomic_inc(&cm_core->listen_node_cnt); | |
2440 | } | |
2441 | ||
2442 | nes_debug(NES_DBG_CM, "Api - listen(): addr=0x%08X, port=0x%04x," | |
615eb715 TN |
2443 | " listener = %p, backlog = %d, cm_id = %p.\n", |
2444 | cm_info->loc_addr, cm_info->loc_port, | |
2445 | listener, listener->backlog, listener->cm_id); | |
3c2d774c GS |
2446 | |
2447 | return listener; | |
2448 | } | |
2449 | ||
2450 | ||
2451 | /** | |
2452 | * mini_cm_connect - make a connection node with params | |
2453 | */ | |
54c86a8c | 2454 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, |
615eb715 TN |
2455 | struct nes_vnic *nesvnic, u16 private_data_len, |
2456 | void *private_data, struct nes_cm_info *cm_info) | |
3c2d774c GS |
2457 | { |
2458 | int ret = 0; | |
2459 | struct nes_cm_node *cm_node; | |
2460 | struct nes_cm_listener *loopbackremotelistener; | |
2461 | struct nes_cm_node *loopbackremotenode; | |
2462 | struct nes_cm_info loopback_cm_info; | |
615eb715 | 2463 | u8 *start_buff; |
3c2d774c GS |
2464 | |
2465 | /* create a CM connection node */ | |
2466 | cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL); | |
2467 | if (!cm_node) | |
2468 | return NULL; | |
2469 | ||
7495ab68 | 2470 | /* set our node side to client (active) side */ |
3c2d774c GS |
2471 | cm_node->tcp_cntxt.client = 1; |
2472 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
2473 | ||
2474 | if (cm_info->loc_addr == cm_info->rem_addr) { | |
6492cdf3 | 2475 | loopbackremotelistener = find_listener(cm_core, |
5647263c TN |
2476 | cm_node->mapped_loc_addr, cm_node->mapped_rem_port, |
2477 | NES_CM_LISTENER_ACTIVE_STATE, 0); | |
3c2d774c GS |
2478 | if (loopbackremotelistener == NULL) { |
2479 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2480 | } else { | |
3c2d774c GS |
2481 | loopback_cm_info = *cm_info; |
2482 | loopback_cm_info.loc_port = cm_info->rem_port; | |
2483 | loopback_cm_info.rem_port = cm_info->loc_port; | |
5647263c TN |
2484 | loopback_cm_info.mapped_loc_port = |
2485 | cm_info->mapped_rem_port; | |
2486 | loopback_cm_info.mapped_rem_port = | |
2487 | cm_info->mapped_loc_port; | |
3c2d774c | 2488 | loopback_cm_info.cm_id = loopbackremotelistener->cm_id; |
6492cdf3 | 2489 | loopbackremotenode = make_cm_node(cm_core, nesvnic, |
615eb715 | 2490 | &loopback_cm_info, loopbackremotelistener); |
79fc3d74 FL |
2491 | if (!loopbackremotenode) { |
2492 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
2493 | return NULL; | |
2494 | } | |
2495 | atomic_inc(&cm_loopbacks); | |
3c2d774c | 2496 | loopbackremotenode->loopbackpartner = cm_node; |
6492cdf3 FL |
2497 | loopbackremotenode->tcp_cntxt.rcv_wscale = |
2498 | NES_CM_DEFAULT_RCV_WND_SCALE; | |
3c2d774c | 2499 | cm_node->loopbackpartner = loopbackremotenode; |
6492cdf3 | 2500 | memcpy(loopbackremotenode->mpa_frame_buf, private_data, |
615eb715 | 2501 | private_data_len); |
6492cdf3 | 2502 | loopbackremotenode->mpa_frame_size = private_data_len; |
3c2d774c | 2503 | |
6492cdf3 FL |
2504 | /* we are done handling this state. */ |
2505 | /* set node to a TSA state */ | |
3c2d774c | 2506 | cm_node->state = NES_CM_STATE_TSA; |
6492cdf3 FL |
2507 | cm_node->tcp_cntxt.rcv_nxt = |
2508 | loopbackremotenode->tcp_cntxt.loc_seq_num; | |
2509 | loopbackremotenode->tcp_cntxt.rcv_nxt = | |
2510 | cm_node->tcp_cntxt.loc_seq_num; | |
2511 | cm_node->tcp_cntxt.max_snd_wnd = | |
2512 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2513 | loopbackremotenode->tcp_cntxt.max_snd_wnd = | |
2514 | cm_node->tcp_cntxt.rcv_wnd; | |
2515 | cm_node->tcp_cntxt.snd_wnd = | |
2516 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2517 | loopbackremotenode->tcp_cntxt.snd_wnd = | |
2518 | cm_node->tcp_cntxt.rcv_wnd; | |
2519 | cm_node->tcp_cntxt.snd_wscale = | |
2520 | loopbackremotenode->tcp_cntxt.rcv_wscale; | |
2521 | loopbackremotenode->tcp_cntxt.snd_wscale = | |
2522 | cm_node->tcp_cntxt.rcv_wscale; | |
9d5ab133 | 2523 | loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD; |
3c2d774c GS |
2524 | create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ); |
2525 | } | |
2526 | return cm_node; | |
2527 | } | |
2528 | ||
615eb715 TN |
2529 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
2530 | cm_node->mpa_frame_size = private_data_len; | |
6492cdf3 | 2531 | |
615eb715 | 2532 | memcpy(start_buff, private_data, private_data_len); |
3c2d774c GS |
2533 | |
2534 | /* send a syn and goto syn sent state */ | |
2535 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
6492cdf3 FL |
2536 | ret = send_syn(cm_node, 0, NULL); |
2537 | ||
2538 | if (ret) { | |
2539 | /* error in sending the syn free up the cm_node struct */ | |
2540 | nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest " | |
615eb715 TN |
2541 | "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2542 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2543 | cm_node->cm_id); | |
6492cdf3 FL |
2544 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2545 | cm_node = NULL; | |
2546 | } | |
3c2d774c | 2547 | |
615eb715 | 2548 | if (cm_node) { |
6492cdf3 | 2549 | nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X," |
615eb715 TN |
2550 | "port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2551 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2552 | cm_node->cm_id); | |
2553 | } | |
3c2d774c GS |
2554 | |
2555 | return cm_node; | |
2556 | } | |
2557 | ||
2558 | ||
2559 | /** | |
2560 | * mini_cm_accept - accept a connection | |
2561 | * This function is never called | |
2562 | */ | |
615eb715 | 2563 | static int mini_cm_accept(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2564 | { |
2565 | return 0; | |
2566 | } | |
2567 | ||
2568 | ||
2569 | /** | |
2570 | * mini_cm_reject - reject and teardown a connection | |
2571 | */ | |
615eb715 | 2572 | static int mini_cm_reject(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2573 | { |
2574 | int ret = 0; | |
9d5ab133 | 2575 | int err = 0; |
183ecfa3 | 2576 | int passive_state; |
9d5ab133 FL |
2577 | struct nes_cm_event event; |
2578 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
2579 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
3c2d774c | 2580 | |
6492cdf3 | 2581 | nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n", |
615eb715 | 2582 | __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state); |
3c2d774c | 2583 | |
6492cdf3 FL |
2584 | if (cm_node->tcp_cntxt.client) |
2585 | return ret; | |
2586 | cleanup_retrans_entry(cm_node); | |
3c2d774c | 2587 | |
9d5ab133 FL |
2588 | if (!loopback) { |
2589 | passive_state = atomic_add_return(1, &cm_node->passive_state); | |
2590 | if (passive_state == NES_SEND_RESET_EVENT) { | |
2591 | cm_node->state = NES_CM_STATE_CLOSED; | |
2592 | rem_ref_cm_node(cm_core, cm_node); | |
2593 | } else { | |
c5a7d489 FL |
2594 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2595 | rem_ref_cm_node(cm_core, cm_node); | |
2596 | } else { | |
2597 | ret = send_mpa_reject(cm_node); | |
2598 | if (ret) { | |
2599 | cm_node->state = NES_CM_STATE_CLOSED; | |
2600 | err = send_reset(cm_node, NULL); | |
2601 | if (err) | |
2602 | WARN_ON(1); | |
615eb715 | 2603 | } else { |
c5a7d489 | 2604 | cm_id->add_ref(cm_id); |
615eb715 | 2605 | } |
c5a7d489 | 2606 | } |
9d5ab133 FL |
2607 | } |
2608 | } else { | |
2609 | cm_node->cm_id = NULL; | |
c5a7d489 FL |
2610 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2611 | rem_ref_cm_node(cm_core, cm_node); | |
2612 | rem_ref_cm_node(cm_core, loopback); | |
2613 | } else { | |
2614 | event.cm_node = loopback; | |
2615 | event.cm_info.rem_addr = loopback->rem_addr; | |
2616 | event.cm_info.loc_addr = loopback->loc_addr; | |
2617 | event.cm_info.rem_port = loopback->rem_port; | |
2618 | event.cm_info.loc_port = loopback->loc_port; | |
2619 | event.cm_info.cm_id = loopback->cm_id; | |
2620 | cm_event_mpa_reject(&event); | |
2621 | rem_ref_cm_node(cm_core, cm_node); | |
2622 | loopback->state = NES_CM_STATE_CLOSING; | |
9d5ab133 | 2623 | |
c5a7d489 FL |
2624 | cm_id = loopback->cm_id; |
2625 | rem_ref_cm_node(cm_core, loopback); | |
2626 | cm_id->rem_ref(cm_id); | |
2627 | } | |
9d5ab133 FL |
2628 | } |
2629 | ||
3c2d774c GS |
2630 | return ret; |
2631 | } | |
2632 | ||
2633 | ||
2634 | /** | |
2635 | * mini_cm_close | |
2636 | */ | |
1a855fbf | 2637 | static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2638 | { |
2639 | int ret = 0; | |
2640 | ||
2641 | if (!cm_core || !cm_node) | |
2642 | return -EINVAL; | |
2643 | ||
2644 | switch (cm_node->state) { | |
6492cdf3 FL |
2645 | case NES_CM_STATE_SYN_RCVD: |
2646 | case NES_CM_STATE_SYN_SENT: | |
2647 | case NES_CM_STATE_ONE_SIDE_ESTABLISHED: | |
2648 | case NES_CM_STATE_ESTABLISHED: | |
2649 | case NES_CM_STATE_ACCEPTING: | |
2650 | case NES_CM_STATE_MPAREQ_SENT: | |
2651 | case NES_CM_STATE_MPAREQ_RCVD: | |
2652 | cleanup_retrans_entry(cm_node); | |
2653 | send_reset(cm_node, NULL); | |
2654 | break; | |
2655 | case NES_CM_STATE_CLOSE_WAIT: | |
2656 | cm_node->state = NES_CM_STATE_LAST_ACK; | |
2657 | send_fin(cm_node, NULL); | |
2658 | break; | |
2659 | case NES_CM_STATE_FIN_WAIT1: | |
2660 | case NES_CM_STATE_FIN_WAIT2: | |
2661 | case NES_CM_STATE_LAST_ACK: | |
2662 | case NES_CM_STATE_TIME_WAIT: | |
2663 | case NES_CM_STATE_CLOSING: | |
2664 | ret = -1; | |
2665 | break; | |
2666 | case NES_CM_STATE_LISTENING: | |
886f98a3 FL |
2667 | cleanup_retrans_entry(cm_node); |
2668 | send_reset(cm_node, NULL); | |
2669 | break; | |
2670 | case NES_CM_STATE_MPAREJ_RCVD: | |
6492cdf3 FL |
2671 | case NES_CM_STATE_UNKNOWN: |
2672 | case NES_CM_STATE_INITED: | |
2673 | case NES_CM_STATE_CLOSED: | |
c5a7d489 | 2674 | case NES_CM_STATE_LISTENER_DESTROYED: |
6492cdf3 FL |
2675 | ret = rem_ref_cm_node(cm_core, cm_node); |
2676 | break; | |
2677 | case NES_CM_STATE_TSA: | |
2678 | if (cm_node->send_entry) | |
2679 | printk(KERN_ERR "ERROR Close got called from STATE_TSA " | |
615eb715 | 2680 | "send_entry=%p\n", cm_node->send_entry); |
6492cdf3 FL |
2681 | ret = rem_ref_cm_node(cm_core, cm_node); |
2682 | break; | |
3c2d774c | 2683 | } |
3c2d774c GS |
2684 | return ret; |
2685 | } | |
2686 | ||
2687 | ||
2688 | /** | |
2689 | * recv_pkt - recv an ETHERNET packet, and process it through CM | |
2690 | * node state machine | |
2691 | */ | |
4a14f6a7 | 2692 | static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, |
615eb715 | 2693 | struct nes_vnic *nesvnic, struct sk_buff *skb) |
3c2d774c GS |
2694 | { |
2695 | struct nes_cm_node *cm_node = NULL; | |
2696 | struct nes_cm_listener *listener = NULL; | |
2697 | struct iphdr *iph; | |
2698 | struct tcphdr *tcph; | |
2699 | struct nes_cm_info nfo; | |
4a14f6a7 | 2700 | int skb_handled = 1; |
03080e5c | 2701 | __be32 tmp_daddr, tmp_saddr; |
3c2d774c | 2702 | |
6492cdf3 | 2703 | if (!skb) |
4a14f6a7 | 2704 | return 0; |
615eb715 | 2705 | if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) |
4a14f6a7 | 2706 | return 0; |
3c2d774c GS |
2707 | |
2708 | iph = (struct iphdr *)skb->data; | |
2709 | tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr)); | |
3c2d774c GS |
2710 | |
2711 | nfo.loc_addr = ntohl(iph->daddr); | |
2712 | nfo.loc_port = ntohs(tcph->dest); | |
2713 | nfo.rem_addr = ntohl(iph->saddr); | |
2714 | nfo.rem_port = ntohs(tcph->source); | |
2715 | ||
5647263c TN |
2716 | /* If port mapper is available these should be mapped address info */ |
2717 | nfo.mapped_loc_addr = ntohl(iph->daddr); | |
2718 | nfo.mapped_loc_port = ntohs(tcph->dest); | |
2719 | nfo.mapped_rem_addr = ntohl(iph->saddr); | |
2720 | nfo.mapped_rem_port = ntohs(tcph->source); | |
2721 | ||
03080e5c HH |
2722 | tmp_daddr = cpu_to_be32(iph->daddr); |
2723 | tmp_saddr = cpu_to_be32(iph->saddr); | |
2724 | ||
63779436 | 2725 | nes_debug(NES_DBG_CM, "Received packet: dest=%pI4:0x%04X src=%pI4:0x%04X\n", |
03080e5c | 2726 | &tmp_daddr, tcph->dest, &tmp_saddr, tcph->source); |
3c2d774c | 2727 | |
6492cdf3 FL |
2728 | do { |
2729 | cm_node = find_node(cm_core, | |
5647263c TN |
2730 | nfo.mapped_rem_port, nfo.mapped_rem_addr, |
2731 | nfo.mapped_loc_port, nfo.mapped_loc_addr); | |
3c2d774c | 2732 | |
3c2d774c | 2733 | if (!cm_node) { |
6492cdf3 FL |
2734 | /* Only type of packet accepted are for */ |
2735 | /* the PASSIVE open (syn only) */ | |
2736 | if ((!tcph->syn) || (tcph->ack)) { | |
4a14f6a7 | 2737 | skb_handled = 0; |
6492cdf3 FL |
2738 | break; |
2739 | } | |
5647263c TN |
2740 | listener = find_listener(cm_core, nfo.mapped_loc_addr, |
2741 | nfo.mapped_loc_port, | |
2742 | NES_CM_LISTENER_ACTIVE_STATE, 0); | |
4a14f6a7 FL |
2743 | if (!listener) { |
2744 | nfo.cm_id = NULL; | |
2745 | nfo.conn_type = 0; | |
2746 | nes_debug(NES_DBG_CM, "Unable to find listener for the pkt\n"); | |
2747 | skb_handled = 0; | |
6492cdf3 FL |
2748 | break; |
2749 | } | |
4a14f6a7 FL |
2750 | nfo.cm_id = listener->cm_id; |
2751 | nfo.conn_type = listener->conn_type; | |
6492cdf3 | 2752 | cm_node = make_cm_node(cm_core, nesvnic, &nfo, |
615eb715 | 2753 | listener); |
6492cdf3 FL |
2754 | if (!cm_node) { |
2755 | nes_debug(NES_DBG_CM, "Unable to allocate " | |
615eb715 | 2756 | "node\n"); |
6492cdf3 | 2757 | cm_packets_dropped++; |
3c2d774c | 2758 | atomic_dec(&listener->ref_count); |
6492cdf3 FL |
2759 | dev_kfree_skb_any(skb); |
2760 | break; | |
3c2d774c | 2761 | } |
6492cdf3 FL |
2762 | if (!tcph->rst && !tcph->fin) { |
2763 | cm_node->state = NES_CM_STATE_LISTENING; | |
2764 | } else { | |
2765 | cm_packets_dropped++; | |
2766 | rem_ref_cm_node(cm_core, cm_node); | |
2767 | dev_kfree_skb_any(skb); | |
2768 | break; | |
3c2d774c | 2769 | } |
6492cdf3 FL |
2770 | add_ref_cm_node(cm_node); |
2771 | } else if (cm_node->state == NES_CM_STATE_TSA) { | |
0f0bee8b FL |
2772 | if (cm_node->nesqp->pau_mode) |
2773 | nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp); | |
2774 | else { | |
2775 | rem_ref_cm_node(cm_core, cm_node); | |
2776 | atomic_inc(&cm_accel_dropped_pkts); | |
2777 | dev_kfree_skb_any(skb); | |
2778 | } | |
6492cdf3 | 2779 | break; |
3c2d774c | 2780 | } |
4a14f6a7 FL |
2781 | skb_reset_network_header(skb); |
2782 | skb_set_transport_header(skb, sizeof(*tcph)); | |
2783 | skb->len = ntohs(iph->tot_len); | |
6492cdf3 FL |
2784 | process_packet(cm_node, skb, cm_core); |
2785 | rem_ref_cm_node(cm_core, cm_node); | |
2786 | } while (0); | |
4a14f6a7 | 2787 | return skb_handled; |
3c2d774c GS |
2788 | } |
2789 | ||
2790 | ||
2791 | /** | |
2792 | * nes_cm_alloc_core - allocate a top level instance of a cm core | |
2793 | */ | |
1a855fbf | 2794 | static struct nes_cm_core *nes_cm_alloc_core(void) |
3c2d774c | 2795 | { |
3c2d774c | 2796 | struct nes_cm_core *cm_core; |
3c2d774c GS |
2797 | |
2798 | /* setup the CM core */ | |
2799 | /* alloc top level core control structure */ | |
2800 | cm_core = kzalloc(sizeof(*cm_core), GFP_KERNEL); | |
2801 | if (!cm_core) | |
2802 | return NULL; | |
2803 | ||
2804 | INIT_LIST_HEAD(&cm_core->connected_nodes); | |
2805 | init_timer(&cm_core->tcp_timer); | |
2806 | cm_core->tcp_timer.function = nes_cm_timer_tick; | |
2807 | ||
615eb715 | 2808 | cm_core->mtu = NES_CM_DEFAULT_MTU; |
3c2d774c GS |
2809 | cm_core->state = NES_CM_STATE_INITED; |
2810 | cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS; | |
2811 | ||
3c2d774c GS |
2812 | atomic_set(&cm_core->events_posted, 0); |
2813 | ||
3c2d774c GS |
2814 | cm_core->api = &nes_cm_api; |
2815 | ||
2816 | spin_lock_init(&cm_core->ht_lock); | |
2817 | spin_lock_init(&cm_core->listen_list_lock); | |
2818 | ||
2819 | INIT_LIST_HEAD(&cm_core->listen_list.list); | |
2820 | ||
2821 | nes_debug(NES_DBG_CM, "Init CM Core completed -- cm_core=%p\n", cm_core); | |
2822 | ||
2823 | nes_debug(NES_DBG_CM, "Enable QUEUE EVENTS\n"); | |
2824 | cm_core->event_wq = create_singlethread_workqueue("nesewq"); | |
2825 | cm_core->post_event = nes_cm_post_event; | |
2826 | nes_debug(NES_DBG_CM, "Enable QUEUE DISCONNECTS\n"); | |
2827 | cm_core->disconn_wq = create_singlethread_workqueue("nesdwq"); | |
2828 | ||
2829 | print_core(cm_core); | |
2830 | return cm_core; | |
2831 | } | |
2832 | ||
2833 | ||
2834 | /** | |
2835 | * mini_cm_dealloc_core - deallocate a top level instance of a cm core | |
2836 | */ | |
1a855fbf | 2837 | static int mini_cm_dealloc_core(struct nes_cm_core *cm_core) |
3c2d774c GS |
2838 | { |
2839 | nes_debug(NES_DBG_CM, "De-Alloc CM Core (%p)\n", cm_core); | |
2840 | ||
2841 | if (!cm_core) | |
2842 | return -EINVAL; | |
2843 | ||
2844 | barrier(); | |
2845 | ||
615eb715 | 2846 | if (timer_pending(&cm_core->tcp_timer)) |
3c2d774c | 2847 | del_timer(&cm_core->tcp_timer); |
3c2d774c GS |
2848 | |
2849 | destroy_workqueue(cm_core->event_wq); | |
2850 | destroy_workqueue(cm_core->disconn_wq); | |
2851 | nes_debug(NES_DBG_CM, "\n"); | |
2852 | kfree(cm_core); | |
2853 | ||
2854 | return 0; | |
2855 | } | |
2856 | ||
2857 | ||
2858 | /** | |
2859 | * mini_cm_get | |
2860 | */ | |
1a855fbf | 2861 | static int mini_cm_get(struct nes_cm_core *cm_core) |
3c2d774c GS |
2862 | { |
2863 | return cm_core->state; | |
2864 | } | |
2865 | ||
2866 | ||
2867 | /** | |
2868 | * mini_cm_set | |
2869 | */ | |
1a855fbf | 2870 | static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value) |
3c2d774c GS |
2871 | { |
2872 | int ret = 0; | |
2873 | ||
2874 | switch (type) { | |
9d5ab133 FL |
2875 | case NES_CM_SET_PKT_SIZE: |
2876 | cm_core->mtu = value; | |
2877 | break; | |
2878 | case NES_CM_SET_FREE_PKT_Q_SIZE: | |
2879 | cm_core->free_tx_pkt_max = value; | |
2880 | break; | |
2881 | default: | |
2882 | /* unknown set option */ | |
2883 | ret = -EINVAL; | |
3c2d774c GS |
2884 | } |
2885 | ||
2886 | return ret; | |
2887 | } | |
2888 | ||
2889 | ||
2890 | /** | |
2891 | * nes_cm_init_tsa_conn setup HW; MPA frames must be | |
2892 | * successfully exchanged when this is called | |
2893 | */ | |
2894 | static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_node) | |
2895 | { | |
2896 | int ret = 0; | |
2897 | ||
2898 | if (!nesqp) | |
2899 | return -EINVAL; | |
2900 | ||
2901 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_IPV4 | | |
615eb715 TN |
2902 | NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG | |
2903 | NES_QPCONTEXT_MISC_DROS); | |
3c2d774c GS |
2904 | |
2905 | if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale) | |
2906 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WSCALE); | |
2907 | ||
2908 | nesqp->nesqp_context->misc2 |= cpu_to_le32(64 << NES_QPCONTEXT_MISC2_TTL_SHIFT); | |
2909 | ||
2910 | nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16); | |
2911 | ||
2912 | nesqp->nesqp_context->tcp_state_flow_label |= cpu_to_le32( | |
615eb715 | 2913 | (u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT); |
3c2d774c GS |
2914 | |
2915 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2916 | (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) & |
2917 | NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK); | |
3c2d774c GS |
2918 | |
2919 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2920 | (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) & |
2921 | NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK); | |
3c2d774c GS |
2922 | |
2923 | nesqp->nesqp_context->keepalive = cpu_to_le32(0x80); | |
2924 | nesqp->nesqp_context->ts_recent = 0; | |
2925 | nesqp->nesqp_context->ts_age = 0; | |
2926 | nesqp->nesqp_context->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2927 | nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd); | |
2928 | nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); | |
2929 | nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd << | |
615eb715 | 2930 | cm_node->tcp_cntxt.rcv_wscale); |
3c2d774c GS |
2931 | nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
2932 | nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2933 | nesqp->nesqp_context->srtt = 0; | |
2934 | nesqp->nesqp_context->rttvar = cpu_to_le32(0x6); | |
2935 | nesqp->nesqp_context->ssthresh = cpu_to_le32(0x3FFFC000); | |
615eb715 | 2936 | nesqp->nesqp_context->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss); |
3c2d774c GS |
2937 | nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); |
2938 | nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2939 | nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd); | |
2940 | ||
2941 | nes_debug(NES_DBG_CM, "QP%u: rcv_nxt = 0x%08X, snd_nxt = 0x%08X," | |
615eb715 TN |
2942 | " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n", |
2943 | nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt), | |
2944 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
2945 | cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale), | |
2946 | le32_to_cpu(nesqp->nesqp_context->rcv_wnd), | |
2947 | le32_to_cpu(nesqp->nesqp_context->misc)); | |
3c2d774c GS |
2948 | nes_debug(NES_DBG_CM, " snd_wnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->snd_wnd)); |
2949 | nes_debug(NES_DBG_CM, " snd_cwnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->cwnd)); | |
2950 | nes_debug(NES_DBG_CM, " max_swnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->max_snd_wnd)); | |
2951 | ||
2952 | nes_debug(NES_DBG_CM, "Change cm_node state to TSA\n"); | |
2953 | cm_node->state = NES_CM_STATE_TSA; | |
2954 | ||
2955 | return ret; | |
2956 | } | |
2957 | ||
2958 | ||
2959 | /** | |
2960 | * nes_cm_disconn | |
2961 | */ | |
2962 | int nes_cm_disconn(struct nes_qp *nesqp) | |
2963 | { | |
873fcdd4 | 2964 | struct disconn_work *work; |
3c2d774c | 2965 | |
873fcdd4 DW |
2966 | work = kzalloc(sizeof *work, GFP_ATOMIC); |
2967 | if (!work) | |
615eb715 | 2968 | return -ENOMEM; /* Timer will clean up */ |
3c2d774c | 2969 | |
873fcdd4 DW |
2970 | nes_add_ref(&nesqp->ibqp); |
2971 | work->nesqp = nesqp; | |
2972 | INIT_WORK(&work->work, nes_disconnect_worker); | |
2973 | queue_work(g_cm_core->disconn_wq, &work->work); | |
3c2d774c GS |
2974 | return 0; |
2975 | } | |
2976 | ||
2977 | ||
2978 | /** | |
2979 | * nes_disconnect_worker | |
2980 | */ | |
1a855fbf | 2981 | static void nes_disconnect_worker(struct work_struct *work) |
3c2d774c | 2982 | { |
873fcdd4 DW |
2983 | struct disconn_work *dwork = container_of(work, struct disconn_work, work); |
2984 | struct nes_qp *nesqp = dwork->nesqp; | |
3c2d774c | 2985 | |
873fcdd4 | 2986 | kfree(dwork); |
3c2d774c | 2987 | nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n", |
615eb715 | 2988 | nesqp->last_aeq, nesqp->hwqp.qp_id); |
3c2d774c | 2989 | nes_cm_disconn_true(nesqp); |
c4c3f279 | 2990 | nes_rem_ref(&nesqp->ibqp); |
3c2d774c GS |
2991 | } |
2992 | ||
2993 | ||
2994 | /** | |
2995 | * nes_cm_disconn_true | |
2996 | */ | |
1a855fbf | 2997 | static int nes_cm_disconn_true(struct nes_qp *nesqp) |
3c2d774c GS |
2998 | { |
2999 | unsigned long flags; | |
3000 | int ret = 0; | |
3001 | struct iw_cm_id *cm_id; | |
3002 | struct iw_cm_event cm_event; | |
3003 | struct nes_vnic *nesvnic; | |
3004 | u16 last_ae; | |
3005 | u8 original_hw_tcp_state; | |
3006 | u8 original_ibqp_state; | |
d0c49bf3 | 3007 | int disconn_status = 0; |
b29a4fc4 DW |
3008 | int issue_disconn = 0; |
3009 | int issue_close = 0; | |
3010 | int issue_flush = 0; | |
3011 | u32 flush_q = NES_CQP_FLUSH_RQ; | |
3012 | struct ib_event ibevent; | |
3c2d774c GS |
3013 | |
3014 | if (!nesqp) { | |
3015 | nes_debug(NES_DBG_CM, "disconnect_worker nesqp is NULL\n"); | |
3016 | return -1; | |
3017 | } | |
3018 | ||
3019 | spin_lock_irqsave(&nesqp->lock, flags); | |
3020 | cm_id = nesqp->cm_id; | |
3021 | /* make sure we havent already closed this connection */ | |
3022 | if (!cm_id) { | |
3023 | nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n", | |
615eb715 | 3024 | nesqp->hwqp.qp_id); |
3c2d774c | 3025 | spin_unlock_irqrestore(&nesqp->lock, flags); |
3c2d774c GS |
3026 | return -1; |
3027 | } | |
3028 | ||
3029 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3030 | nes_debug(NES_DBG_CM, "Disconnecting QP%u\n", nesqp->hwqp.qp_id); | |
3031 | ||
3032 | original_hw_tcp_state = nesqp->hw_tcp_state; | |
615eb715 | 3033 | original_ibqp_state = nesqp->ibqp_state; |
3c2d774c GS |
3034 | last_ae = nesqp->last_aeq; |
3035 | ||
b29a4fc4 DW |
3036 | if (nesqp->term_flags) { |
3037 | issue_disconn = 1; | |
3038 | issue_close = 1; | |
3039 | nesqp->cm_id = NULL; | |
196f40c8 | 3040 | del_timer(&nesqp->terminate_timer); |
b29a4fc4 DW |
3041 | if (nesqp->flush_issued == 0) { |
3042 | nesqp->flush_issued = 1; | |
3043 | issue_flush = 1; | |
3044 | } | |
3045 | } else if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) || | |
3046 | ((original_ibqp_state == IB_QPS_RTS) && | |
3047 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
3048 | issue_disconn = 1; | |
3049 | if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) | |
d0c49bf3 | 3050 | disconn_status = -ECONNRESET; |
b29a4fc4 DW |
3051 | } |
3052 | ||
3053 | if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) || | |
3054 | (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) || | |
3055 | (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) || | |
3056 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
3057 | issue_close = 1; | |
3058 | nesqp->cm_id = NULL; | |
3059 | if (nesqp->flush_issued == 0) { | |
3060 | nesqp->flush_issued = 1; | |
3061 | issue_flush = 1; | |
3062 | } | |
3063 | } | |
3c2d774c | 3064 | |
b29a4fc4 DW |
3065 | spin_unlock_irqrestore(&nesqp->lock, flags); |
3066 | ||
3067 | if ((issue_flush) && (nesqp->destroyed == 0)) { | |
3068 | /* Flush the queue(s) */ | |
3069 | if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE) | |
3070 | flush_q |= NES_CQP_FLUSH_SQ; | |
3071 | flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1); | |
3072 | ||
3073 | if (nesqp->term_flags) { | |
3074 | ibevent.device = nesqp->ibqp.device; | |
3075 | ibevent.event = nesqp->terminate_eventtype; | |
3076 | ibevent.element.qp = &nesqp->ibqp; | |
784d135f TN |
3077 | if (nesqp->ibqp.event_handler) |
3078 | nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context); | |
b29a4fc4 DW |
3079 | } |
3080 | } | |
3c2d774c | 3081 | |
b29a4fc4 DW |
3082 | if ((cm_id) && (cm_id->event_handler)) { |
3083 | if (issue_disconn) { | |
3c2d774c GS |
3084 | atomic_inc(&cm_disconnects); |
3085 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
b29a4fc4 | 3086 | cm_event.status = disconn_status; |
3c2d774c GS |
3087 | cm_event.local_addr = cm_id->local_addr; |
3088 | cm_event.remote_addr = cm_id->remote_addr; | |
3089 | cm_event.private_data = NULL; | |
3090 | cm_event.private_data_len = 0; | |
3091 | ||
6492cdf3 | 3092 | nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event" |
615eb715 TN |
3093 | " for QP%u, SQ Head = %u, SQ Tail = %u. " |
3094 | "cm_id = %p, refcount = %u.\n", | |
3095 | nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, | |
3096 | nesqp->hwqp.sq_tail, cm_id, | |
3097 | atomic_read(&nesqp->refcount)); | |
3c2d774c | 3098 | |
3c2d774c GS |
3099 | ret = cm_id->event_handler(cm_id, &cm_event); |
3100 | if (ret) | |
6492cdf3 | 3101 | nes_debug(NES_DBG_CM, "OFA CM event_handler " |
615eb715 | 3102 | "returned, ret=%d\n", ret); |
3c2d774c GS |
3103 | } |
3104 | ||
b29a4fc4 | 3105 | if (issue_close) { |
3c2d774c | 3106 | atomic_inc(&cm_closes); |
3c2d774c GS |
3107 | nes_disconnect(nesqp, 1); |
3108 | ||
3109 | cm_id->provider_data = nesqp; | |
3110 | /* Send up the close complete event */ | |
3111 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 3112 | cm_event.status = 0; |
3c2d774c GS |
3113 | cm_event.provider_data = cm_id->provider_data; |
3114 | cm_event.local_addr = cm_id->local_addr; | |
3115 | cm_event.remote_addr = cm_id->remote_addr; | |
3116 | cm_event.private_data = NULL; | |
3117 | cm_event.private_data_len = 0; | |
3118 | ||
3119 | ret = cm_id->event_handler(cm_id, &cm_event); | |
615eb715 | 3120 | if (ret) |
3c2d774c | 3121 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3c2d774c GS |
3122 | |
3123 | cm_id->rem_ref(cm_id); | |
3c2d774c | 3124 | } |
3c2d774c | 3125 | } |
3c2d774c GS |
3126 | |
3127 | return 0; | |
3128 | } | |
3129 | ||
3130 | ||
3131 | /** | |
3132 | * nes_disconnect | |
3133 | */ | |
1a855fbf | 3134 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt) |
3c2d774c GS |
3135 | { |
3136 | int ret = 0; | |
3137 | struct nes_vnic *nesvnic; | |
3138 | struct nes_device *nesdev; | |
c12e56ef | 3139 | struct nes_ib_device *nesibdev; |
3c2d774c GS |
3140 | |
3141 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3142 | if (!nesvnic) | |
3143 | return -EINVAL; | |
3144 | ||
3145 | nesdev = nesvnic->nesdev; | |
c12e56ef | 3146 | nesibdev = nesvnic->nesibdev; |
3c2d774c GS |
3147 | |
3148 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 3149 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c GS |
3150 | |
3151 | if (nesqp->active_conn) { | |
3152 | ||
3153 | /* indicate this connection is NOT active */ | |
3154 | nesqp->active_conn = 0; | |
3155 | } else { | |
3156 | /* Need to free the Last Streaming Mode Message */ | |
3157 | if (nesqp->ietf_frame) { | |
c12e56ef FL |
3158 | if (nesqp->lsmm_mr) |
3159 | nesibdev->ibdev.dereg_mr(nesqp->lsmm_mr); | |
3c2d774c | 3160 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
3161 | nesqp->private_data_len + nesqp->ietf_frame_size, |
3162 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
3c2d774c GS |
3163 | } |
3164 | } | |
3165 | ||
3166 | /* close the CM node down if it is still active */ | |
3167 | if (nesqp->cm_node) { | |
3168 | nes_debug(NES_DBG_CM, "Call close API\n"); | |
3169 | ||
3170 | g_cm_core->api->close(g_cm_core, nesqp->cm_node); | |
3c2d774c GS |
3171 | } |
3172 | ||
3173 | return ret; | |
3174 | } | |
3175 | ||
3176 | ||
3177 | /** | |
3178 | * nes_accept | |
3179 | */ | |
3180 | int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
3181 | { | |
3182 | u64 u64temp; | |
3183 | struct ib_qp *ibqp; | |
3184 | struct nes_qp *nesqp; | |
3185 | struct nes_vnic *nesvnic; | |
3186 | struct nes_device *nesdev; | |
3187 | struct nes_cm_node *cm_node; | |
3188 | struct nes_adapter *adapter; | |
3189 | struct ib_qp_attr attr; | |
3190 | struct iw_cm_event cm_event; | |
3191 | struct nes_hw_qp_wqe *wqe; | |
3192 | struct nes_v4_quad nes_quad; | |
30da7cff | 3193 | u32 crc_value; |
3c2d774c | 3194 | int ret; |
183ecfa3 | 3195 | int passive_state; |
c12e56ef FL |
3196 | struct nes_ib_device *nesibdev; |
3197 | struct ib_mr *ibmr = NULL; | |
3198 | struct ib_phys_buf ibphysbuf; | |
3199 | struct nes_pd *nespd; | |
7a5efb62 | 3200 | u64 tagged_offset; |
615eb715 TN |
3201 | u8 mpa_frame_offset = 0; |
3202 | struct ietf_mpa_v2 *mpa_v2_frame; | |
3203 | u8 start_addr = 0; | |
3204 | u8 *start_ptr = &start_addr; | |
3205 | u8 **start_buff = &start_ptr; | |
3206 | u16 buff_len = 0; | |
24d44a39 SW |
3207 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3208 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
c12e56ef | 3209 | |
3c2d774c GS |
3210 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
3211 | if (!ibqp) | |
3212 | return -EINVAL; | |
3213 | ||
3214 | /* get all our handles */ | |
3215 | nesqp = to_nesqp(ibqp); | |
3216 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3217 | nesdev = nesvnic->nesdev; | |
3218 | adapter = nesdev->nesadapter; | |
3219 | ||
3c2d774c | 3220 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
6492cdf3 FL |
3221 | nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p," |
3222 | "%s\n", cm_node, nesvnic, nesvnic->netdev, | |
3223 | nesvnic->netdev->name); | |
3c2d774c | 3224 | |
c5a7d489 FL |
3225 | if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) { |
3226 | if (cm_node->loopbackpartner) | |
3227 | rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner); | |
3228 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3229 | return -EINVAL; | |
3230 | } | |
3231 | ||
dae58728 FL |
3232 | passive_state = atomic_add_return(1, &cm_node->passive_state); |
3233 | if (passive_state == NES_SEND_RESET_EVENT) { | |
3234 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3235 | return -ECONNRESET; | |
3236 | } | |
3c2d774c GS |
3237 | /* associate the node with the QP */ |
3238 | nesqp->cm_node = (void *)cm_node; | |
6492cdf3 | 3239 | cm_node->nesqp = nesqp; |
3c2d774c | 3240 | |
4ac79a70 | 3241 | |
6492cdf3 FL |
3242 | nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", |
3243 | nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); | |
3c2d774c GS |
3244 | atomic_inc(&cm_accepts); |
3245 | ||
3246 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 3247 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c | 3248 | |
615eb715 | 3249 | nesqp->ietf_frame_size = sizeof(struct ietf_mpa_v2); |
6492cdf3 FL |
3250 | /* allocate the ietf frame and space for private data */ |
3251 | nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev, | |
615eb715 TN |
3252 | nesqp->ietf_frame_size + conn_param->private_data_len, |
3253 | &nesqp->ietf_frame_pbase); | |
3c2d774c | 3254 | |
6492cdf3 | 3255 | if (!nesqp->ietf_frame) { |
615eb715 | 3256 | nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n"); |
6492cdf3 FL |
3257 | return -ENOMEM; |
3258 | } | |
615eb715 | 3259 | mpa_v2_frame = (struct ietf_mpa_v2 *)nesqp->ietf_frame; |
3c2d774c | 3260 | |
615eb715 TN |
3261 | if (cm_node->mpa_frame_rev == IETF_MPA_V1) |
3262 | mpa_frame_offset = 4; | |
3c2d774c | 3263 | |
4ac79a70 TN |
3264 | if (cm_node->mpa_frame_rev == IETF_MPA_V1 || |
3265 | cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) { | |
3266 | record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord); | |
3267 | } | |
3268 | ||
615eb715 TN |
3269 | memcpy(mpa_v2_frame->priv_data, conn_param->private_data, |
3270 | conn_param->private_data_len); | |
3c2d774c | 3271 | |
615eb715 TN |
3272 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, nesqp->ietf_frame, MPA_KEY_REPLY); |
3273 | nesqp->private_data_len = conn_param->private_data_len; | |
3c2d774c | 3274 | |
6492cdf3 FL |
3275 | /* setup our first outgoing iWarp send WQE (the IETF frame response) */ |
3276 | wqe = &nesqp->hwqp.sq_vbase[0]; | |
3277 | ||
24d44a39 | 3278 | if (raddr->sin_addr.s_addr != laddr->sin_addr.s_addr) { |
6492cdf3 | 3279 | u64temp = (unsigned long)nesqp; |
c12e56ef FL |
3280 | nesibdev = nesvnic->nesibdev; |
3281 | nespd = nesqp->nespd; | |
615eb715 TN |
3282 | ibphysbuf.addr = nesqp->ietf_frame_pbase + mpa_frame_offset; |
3283 | ibphysbuf.size = buff_len; | |
3284 | tagged_offset = (u64)(unsigned long)*start_buff; | |
c12e56ef | 3285 | ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd, |
615eb715 TN |
3286 | &ibphysbuf, 1, |
3287 | IB_ACCESS_LOCAL_WRITE, | |
3288 | &tagged_offset); | |
c12e56ef FL |
3289 | if (!ibmr) { |
3290 | nes_debug(NES_DBG_CM, "Unable to register memory region" | |
615eb715 TN |
3291 | "for lSMM for cm_node = %p \n", |
3292 | cm_node); | |
9256b251 | 3293 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
3294 | nesqp->private_data_len + nesqp->ietf_frame_size, |
3295 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
c12e56ef FL |
3296 | return -ENOMEM; |
3297 | } | |
3298 | ||
3299 | ibmr->pd = &nespd->ibpd; | |
3300 | ibmr->device = nespd->ibpd.device; | |
3301 | nesqp->lsmm_mr = ibmr; | |
3302 | ||
615eb715 | 3303 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
6492cdf3 | 3304 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3305 | NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, |
3306 | u64temp); | |
6492cdf3 FL |
3307 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = |
3308 | cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING | | |
615eb715 | 3309 | NES_IWARP_SQ_WQE_WRPDU); |
6492cdf3 | 3310 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = |
615eb715 | 3311 | cpu_to_le32(buff_len); |
c12e56ef | 3312 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3313 | NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, |
3314 | (u64)(unsigned long)(*start_buff)); | |
6492cdf3 | 3315 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = |
615eb715 | 3316 | cpu_to_le32(buff_len); |
c12e56ef | 3317 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey; |
d2fa9b26 FL |
3318 | if (nesqp->sq_kmapped) { |
3319 | nesqp->sq_kmapped = 0; | |
3320 | kunmap(nesqp->page); | |
3321 | } | |
6492cdf3 FL |
3322 | |
3323 | nesqp->nesqp_context->ird_ord_sizes |= | |
3324 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
615eb715 | 3325 | NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3326 | } else { |
3327 | nesqp->nesqp_context->ird_ord_sizes |= | |
9d5ab133 | 3328 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3329 | } |
3330 | nesqp->skip_lsmm = 1; | |
3c2d774c | 3331 | |
3c2d774c GS |
3332 | /* Cache the cm_id in the qp */ |
3333 | nesqp->cm_id = cm_id; | |
3334 | cm_node->cm_id = cm_id; | |
3335 | ||
3336 | /* nesqp->cm_node = (void *)cm_id->provider_data; */ | |
3337 | cm_id->provider_data = nesqp; | |
615eb715 | 3338 | nesqp->active_conn = 0; |
3c2d774c | 3339 | |
6492cdf3 FL |
3340 | if (cm_node->state == NES_CM_STATE_TSA) |
3341 | nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n", | |
615eb715 | 3342 | cm_node); |
6492cdf3 | 3343 | |
3c2d774c GS |
3344 | nes_cm_init_tsa_conn(nesqp, cm_node); |
3345 | ||
5647263c TN |
3346 | nesqp->nesqp_context->tcpPorts[0] = |
3347 | cpu_to_le16(cm_node->mapped_loc_port); | |
3348 | nesqp->nesqp_context->tcpPorts[1] = | |
3349 | cpu_to_le16(cm_node->mapped_rem_port); | |
6492cdf3 | 3350 | |
5647263c | 3351 | nesqp->nesqp_context->ip0 = cpu_to_le32(cm_node->mapped_rem_addr); |
3c2d774c GS |
3352 | |
3353 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
615eb715 TN |
3354 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3355 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3356 | |
6492cdf3 FL |
3357 | nesqp->nesqp_context->arp_index_vlan |= |
3358 | cpu_to_le32(nes_arp_table(nesdev, | |
615eb715 TN |
3359 | le32_to_cpu(nesqp->nesqp_context->ip0), NULL, |
3360 | NES_ARP_RESOLVE) << 16); | |
3c2d774c GS |
3361 | |
3362 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
6492cdf3 | 3363 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); |
3c2d774c GS |
3364 | |
3365 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3366 | ||
3367 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32( | |
6492cdf3 FL |
3368 | ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT)); |
3369 | nesqp->nesqp_context->ird_ord_sizes |= | |
4ac79a70 | 3370 | cpu_to_le32((u32)cm_node->ord_size); |
3c2d774c GS |
3371 | |
3372 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
6492cdf3 FL |
3373 | nes_quad.DstIpAdrIndex = |
3374 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
5647263c TN |
3375 | nes_quad.SrcIpadr = htonl(cm_node->mapped_rem_addr); |
3376 | nes_quad.TcpPorts[0] = htons(cm_node->mapped_rem_port); | |
3377 | nes_quad.TcpPorts[1] = htons(cm_node->mapped_loc_port); | |
3c2d774c GS |
3378 | |
3379 | /* Produce hash key */ | |
30da7cff FL |
3380 | crc_value = get_crc_value(&nes_quad); |
3381 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3382 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n", |
615eb715 | 3383 | nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask); |
3c2d774c GS |
3384 | |
3385 | nesqp->hte_index &= adapter->hte_index_mask; | |
3386 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3387 | ||
3388 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); | |
3389 | ||
6492cdf3 | 3390 | nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = " |
615eb715 TN |
3391 | "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + " |
3392 | "private data length=%u.\n", nesqp->hwqp.qp_id, | |
24d44a39 SW |
3393 | ntohl(raddr->sin_addr.s_addr), ntohs(raddr->sin_port), |
3394 | ntohl(laddr->sin_addr.s_addr), ntohs(laddr->sin_port), | |
615eb715 TN |
3395 | le32_to_cpu(nesqp->nesqp_context->rcv_nxt), |
3396 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
3397 | buff_len); | |
3c2d774c | 3398 | |
73ac36ea | 3399 | /* notify OF layer that accept event was successful */ |
3c2d774c | 3400 | cm_id->add_ref(cm_id); |
9256b251 | 3401 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3402 | |
3403 | cm_event.event = IW_CM_EVENT_ESTABLISHED; | |
d0c49bf3 | 3404 | cm_event.status = 0; |
3c2d774c GS |
3405 | cm_event.provider_data = (void *)nesqp; |
3406 | cm_event.local_addr = cm_id->local_addr; | |
3407 | cm_event.remote_addr = cm_id->remote_addr; | |
3408 | cm_event.private_data = NULL; | |
3409 | cm_event.private_data_len = 0; | |
4ac79a70 TN |
3410 | cm_event.ird = cm_node->ird_size; |
3411 | cm_event.ord = cm_node->ord_size; | |
3412 | ||
3c2d774c | 3413 | ret = cm_id->event_handler(cm_id, &cm_event); |
183ecfa3 FL |
3414 | attr.qp_state = IB_QPS_RTS; |
3415 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3416 | if (cm_node->loopbackpartner) { |
6492cdf3 FL |
3417 | cm_node->loopbackpartner->mpa_frame_size = |
3418 | nesqp->private_data_len; | |
3c2d774c | 3419 | /* copy entire MPA frame to our cm_node's frame */ |
6492cdf3 | 3420 | memcpy(cm_node->loopbackpartner->mpa_frame_buf, |
615eb715 | 3421 | conn_param->private_data, conn_param->private_data_len); |
3c2d774c GS |
3422 | create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED); |
3423 | } | |
3424 | if (ret) | |
6492cdf3 | 3425 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3426 | "ret=%d\n", __func__, __LINE__, ret); |
3c2d774c GS |
3427 | |
3428 | return 0; | |
3429 | } | |
3430 | ||
3431 | ||
3432 | /** | |
3433 | * nes_reject | |
3434 | */ | |
3435 | int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
3436 | { | |
3437 | struct nes_cm_node *cm_node; | |
9d5ab133 | 3438 | struct nes_cm_node *loopback; |
3c2d774c | 3439 | struct nes_cm_core *cm_core; |
615eb715 | 3440 | u8 *start_buff; |
3c2d774c GS |
3441 | |
3442 | atomic_inc(&cm_rejects); | |
615eb715 | 3443 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
9d5ab133 | 3444 | loopback = cm_node->loopbackpartner; |
3c2d774c | 3445 | cm_core = cm_node->cm_core; |
9d5ab133 | 3446 | cm_node->cm_id = cm_id; |
3c2d774c | 3447 | |
615eb715 | 3448 | if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER) |
9d5ab133 FL |
3449 | return -EINVAL; |
3450 | ||
9d5ab133 FL |
3451 | if (loopback) { |
3452 | memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len); | |
3453 | loopback->mpa_frame.priv_data_len = pdata_len; | |
615eb715 | 3454 | loopback->mpa_frame_size = pdata_len; |
9d5ab133 | 3455 | } else { |
615eb715 TN |
3456 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
3457 | cm_node->mpa_frame_size = pdata_len; | |
3458 | memcpy(start_buff, pdata, pdata_len); | |
9d5ab133 | 3459 | } |
615eb715 | 3460 | return cm_core->api->reject(cm_core, cm_node); |
3c2d774c GS |
3461 | } |
3462 | ||
3463 | ||
3464 | /** | |
3465 | * nes_connect | |
3466 | * setup and launch cm connect node | |
3467 | */ | |
3468 | int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
3469 | { | |
3470 | struct ib_qp *ibqp; | |
3471 | struct nes_qp *nesqp; | |
3472 | struct nes_vnic *nesvnic; | |
3473 | struct nes_device *nesdev; | |
3474 | struct nes_cm_node *cm_node; | |
3475 | struct nes_cm_info cm_info; | |
53094c38 | 3476 | int apbvt_set = 0; |
24d44a39 SW |
3477 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3478 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
5647263c TN |
3479 | struct iwpm_dev_data pm_reg_msg; |
3480 | struct iwpm_sa_data pm_msg; | |
3481 | int iwpm_err = 0; | |
3c2d774c | 3482 | |
24d44a39 SW |
3483 | if (cm_id->remote_addr.ss_family != AF_INET) |
3484 | return -ENOSYS; | |
3c2d774c GS |
3485 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
3486 | if (!ibqp) | |
3487 | return -EINVAL; | |
3488 | nesqp = to_nesqp(ibqp); | |
3489 | if (!nesqp) | |
3490 | return -EINVAL; | |
3491 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3492 | if (!nesvnic) | |
3493 | return -EINVAL; | |
615eb715 | 3494 | nesdev = nesvnic->nesdev; |
3c2d774c GS |
3495 | if (!nesdev) |
3496 | return -EINVAL; | |
3497 | ||
24d44a39 | 3498 | if (!laddr->sin_port || !raddr->sin_port) |
c5a7d489 FL |
3499 | return -EINVAL; |
3500 | ||
6492cdf3 | 3501 | nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = " |
615eb715 | 3502 | "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id, |
24d44a39 SW |
3503 | ntohl(nesvnic->local_ipaddr), ntohl(raddr->sin_addr.s_addr), |
3504 | ntohs(raddr->sin_port), ntohl(laddr->sin_addr.s_addr), | |
3505 | ntohs(laddr->sin_port)); | |
3c2d774c | 3506 | |
6492cdf3 | 3507 | atomic_inc(&cm_connects); |
3c2d774c GS |
3508 | nesqp->active_conn = 1; |
3509 | ||
3c2d774c GS |
3510 | /* cache the cm_id in the qp */ |
3511 | nesqp->cm_id = cm_id; | |
3c2d774c | 3512 | cm_id->provider_data = nesqp; |
3c2d774c | 3513 | nesqp->private_data_len = conn_param->private_data_len; |
d3e51328 | 3514 | |
3c2d774c | 3515 | nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord); |
6492cdf3 | 3516 | nes_debug(NES_DBG_CM, "mpa private data len =%u\n", |
615eb715 | 3517 | conn_param->private_data_len); |
3c2d774c | 3518 | |
5647263c TN |
3519 | /* set up the connection params for the node */ |
3520 | cm_info.loc_addr = ntohl(laddr->sin_addr.s_addr); | |
3521 | cm_info.loc_port = ntohs(laddr->sin_port); | |
3522 | cm_info.rem_addr = ntohl(raddr->sin_addr.s_addr); | |
3523 | cm_info.rem_port = ntohs(raddr->sin_port); | |
3524 | cm_info.cm_id = cm_id; | |
3525 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3526 | ||
3527 | /* No port mapper available, go with the specified peer information */ | |
3528 | cm_info.mapped_loc_addr = cm_info.loc_addr; | |
3529 | cm_info.mapped_loc_port = cm_info.loc_port; | |
3530 | cm_info.mapped_rem_addr = cm_info.rem_addr; | |
3531 | cm_info.mapped_rem_port = cm_info.rem_port; | |
3532 | ||
3533 | nes_form_reg_msg(nesvnic, &pm_reg_msg); | |
3534 | iwpm_err = iwpm_register_pid(&pm_reg_msg, RDMA_NL_NES); | |
3535 | if (iwpm_err) { | |
3536 | nes_debug(NES_DBG_NLMSG, | |
3537 | "Port Mapper reg pid fail (err = %d).\n", iwpm_err); | |
3538 | } | |
3539 | if (iwpm_valid_pid() && !iwpm_err) { | |
3540 | nes_form_pm_msg(&cm_info, &pm_msg); | |
3541 | iwpm_err = iwpm_add_and_query_mapping(&pm_msg, RDMA_NL_NES); | |
3542 | if (iwpm_err) | |
3543 | nes_debug(NES_DBG_NLMSG, | |
3544 | "Port Mapper query fail (err = %d).\n", iwpm_err); | |
3545 | else | |
3546 | nes_record_pm_msg(&cm_info, &pm_msg); | |
3547 | } | |
3548 | ||
24d44a39 | 3549 | if (laddr->sin_addr.s_addr != raddr->sin_addr.s_addr) { |
5647263c TN |
3550 | nes_manage_apbvt(nesvnic, cm_info.mapped_loc_port, |
3551 | PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD); | |
53094c38 FL |
3552 | apbvt_set = 1; |
3553 | } | |
3c2d774c | 3554 | |
5647263c TN |
3555 | if (nes_create_mapinfo(&cm_info)) |
3556 | return -ENOMEM; | |
3c2d774c GS |
3557 | |
3558 | cm_id->add_ref(cm_id); | |
3c2d774c GS |
3559 | |
3560 | /* create a connect CM node connection */ | |
6492cdf3 | 3561 | cm_node = g_cm_core->api->connect(g_cm_core, nesvnic, |
615eb715 TN |
3562 | conn_param->private_data_len, (void *)conn_param->private_data, |
3563 | &cm_info); | |
3c2d774c | 3564 | if (!cm_node) { |
53094c38 | 3565 | if (apbvt_set) |
5647263c | 3566 | nes_manage_apbvt(nesvnic, cm_info.mapped_loc_port, |
615eb715 TN |
3567 | PCI_FUNC(nesdev->pcidev->devfn), |
3568 | NES_MANAGE_APBVT_DEL); | |
6492cdf3 | 3569 | |
5647263c TN |
3570 | nes_debug(NES_DBG_NLMSG, "Delete mapped_loc_port = %04X\n", |
3571 | cm_info.mapped_loc_port); | |
3572 | nes_remove_mapinfo(cm_info.loc_addr, cm_info.loc_port, | |
3573 | cm_info.mapped_loc_addr, cm_info.mapped_loc_port); | |
3c2d774c GS |
3574 | cm_id->rem_ref(cm_id); |
3575 | return -ENOMEM; | |
3576 | } | |
3577 | ||
4ac79a70 TN |
3578 | record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord); |
3579 | if (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO && | |
3580 | cm_node->ord_size == 0) | |
3581 | cm_node->ord_size = 1; | |
3582 | ||
53094c38 | 3583 | cm_node->apbvt_set = apbvt_set; |
3c2d774c | 3584 | nesqp->cm_node = cm_node; |
6492cdf3 | 3585 | cm_node->nesqp = nesqp; |
d7ffd507 | 3586 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3587 | |
3588 | return 0; | |
3589 | } | |
3590 | ||
3591 | ||
3592 | /** | |
3593 | * nes_create_listen | |
3594 | */ | |
3595 | int nes_create_listen(struct iw_cm_id *cm_id, int backlog) | |
3596 | { | |
3597 | struct nes_vnic *nesvnic; | |
3598 | struct nes_cm_listener *cm_node; | |
3599 | struct nes_cm_info cm_info; | |
3c2d774c | 3600 | int err; |
24d44a39 | 3601 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3c2d774c | 3602 | |
3c2d774c | 3603 | nes_debug(NES_DBG_CM, "cm_id = %p, local port = 0x%04X.\n", |
24d44a39 | 3604 | cm_id, ntohs(laddr->sin_port)); |
3c2d774c | 3605 | |
24d44a39 SW |
3606 | if (cm_id->local_addr.ss_family != AF_INET) |
3607 | return -ENOSYS; | |
3c2d774c GS |
3608 | nesvnic = to_nesvnic(cm_id->device); |
3609 | if (!nesvnic) | |
3610 | return -EINVAL; | |
69d51023 | 3611 | |
3c2d774c GS |
3612 | nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n", |
3613 | nesvnic, nesvnic->netdev, nesvnic->netdev->name); | |
3614 | ||
3615 | nes_debug(NES_DBG_CM, "nesvnic->local_ipaddr=0x%08x, sin_addr.s_addr=0x%08x\n", | |
24d44a39 | 3616 | nesvnic->local_ipaddr, laddr->sin_addr.s_addr); |
3c2d774c GS |
3617 | |
3618 | /* setup listen params in our api call struct */ | |
5647263c TN |
3619 | cm_info.loc_addr = ntohl(nesvnic->local_ipaddr); |
3620 | cm_info.loc_port = ntohs(laddr->sin_port); | |
3c2d774c GS |
3621 | cm_info.backlog = backlog; |
3622 | cm_info.cm_id = cm_id; | |
3623 | ||
3624 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3625 | ||
5647263c TN |
3626 | /* No port mapper available, go with the specified info */ |
3627 | cm_info.mapped_loc_addr = cm_info.loc_addr; | |
3628 | cm_info.mapped_loc_port = cm_info.loc_port; | |
3c2d774c GS |
3629 | |
3630 | cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info); | |
3631 | if (!cm_node) { | |
6492cdf3 | 3632 | printk(KERN_ERR "%s[%u] Error returned from listen API call\n", |
615eb715 | 3633 | __func__, __LINE__); |
3c2d774c GS |
3634 | return -ENOMEM; |
3635 | } | |
3636 | ||
3637 | cm_id->provider_data = cm_node; | |
3638 | ||
3639 | if (!cm_node->reused_node) { | |
5647263c TN |
3640 | if (nes_create_mapinfo(&cm_info)) |
3641 | return -ENOMEM; | |
3642 | ||
3643 | err = nes_manage_apbvt(nesvnic, cm_node->mapped_loc_port, | |
615eb715 TN |
3644 | PCI_FUNC(nesvnic->nesdev->pcidev->devfn), |
3645 | NES_MANAGE_APBVT_ADD); | |
3c2d774c | 3646 | if (err) { |
6492cdf3 | 3647 | printk(KERN_ERR "nes_manage_apbvt call returned %d.\n", |
615eb715 | 3648 | err); |
3c2d774c GS |
3649 | g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); |
3650 | return err; | |
3651 | } | |
6e10d2e4 | 3652 | atomic_inc(&cm_listens_created); |
3c2d774c GS |
3653 | } |
3654 | ||
3655 | cm_id->add_ref(cm_id); | |
3656 | cm_id->provider_data = (void *)cm_node; | |
3657 | ||
3658 | ||
3659 | return 0; | |
3660 | } | |
3661 | ||
3662 | ||
3663 | /** | |
3664 | * nes_destroy_listen | |
3665 | */ | |
3666 | int nes_destroy_listen(struct iw_cm_id *cm_id) | |
3667 | { | |
3668 | if (cm_id->provider_data) | |
3669 | g_cm_core->api->stop_listener(g_cm_core, cm_id->provider_data); | |
3670 | else | |
3671 | nes_debug(NES_DBG_CM, "cm_id->provider_data was NULL\n"); | |
3672 | ||
3673 | cm_id->rem_ref(cm_id); | |
3674 | ||
3675 | return 0; | |
3676 | } | |
3677 | ||
3678 | ||
3679 | /** | |
3680 | * nes_cm_recv | |
3681 | */ | |
3682 | int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice) | |
3683 | { | |
4a14f6a7 | 3684 | int rc = 0; |
615eb715 | 3685 | |
3c2d774c | 3686 | cm_packets_received++; |
615eb715 | 3687 | if ((g_cm_core) && (g_cm_core->api)) |
4a14f6a7 | 3688 | rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb); |
615eb715 | 3689 | else |
3c2d774c | 3690 | nes_debug(NES_DBG_CM, "Unable to process packet for CM," |
615eb715 | 3691 | " cm is not setup properly.\n"); |
3c2d774c | 3692 | |
4a14f6a7 | 3693 | return rc; |
3c2d774c GS |
3694 | } |
3695 | ||
3696 | ||
3697 | /** | |
3698 | * nes_cm_start | |
3699 | * Start and init a cm core module | |
3700 | */ | |
3701 | int nes_cm_start(void) | |
3702 | { | |
3703 | nes_debug(NES_DBG_CM, "\n"); | |
3704 | /* create the primary CM core, pass this handle to subsequent core inits */ | |
3705 | g_cm_core = nes_cm_alloc_core(); | |
615eb715 | 3706 | if (g_cm_core) |
3c2d774c | 3707 | return 0; |
615eb715 | 3708 | else |
3c2d774c | 3709 | return -ENOMEM; |
3c2d774c GS |
3710 | } |
3711 | ||
3712 | ||
3713 | /** | |
3714 | * nes_cm_stop | |
3715 | * stop and dealloc all cm core instances | |
3716 | */ | |
3717 | int nes_cm_stop(void) | |
3718 | { | |
3719 | g_cm_core->api->destroy_cm_core(g_cm_core); | |
3720 | return 0; | |
3721 | } | |
3722 | ||
3723 | ||
3724 | /** | |
3725 | * cm_event_connected | |
3726 | * handle a connected event, setup QPs and HW | |
3727 | */ | |
1a855fbf | 3728 | static void cm_event_connected(struct nes_cm_event *event) |
3c2d774c | 3729 | { |
3c2d774c GS |
3730 | struct nes_qp *nesqp; |
3731 | struct nes_vnic *nesvnic; | |
3732 | struct nes_device *nesdev; | |
3733 | struct nes_cm_node *cm_node; | |
3734 | struct nes_adapter *nesadapter; | |
3735 | struct ib_qp_attr attr; | |
3736 | struct iw_cm_id *cm_id; | |
3737 | struct iw_cm_event cm_event; | |
3c2d774c | 3738 | struct nes_v4_quad nes_quad; |
30da7cff | 3739 | u32 crc_value; |
3c2d774c | 3740 | int ret; |
24d44a39 SW |
3741 | struct sockaddr_in *laddr; |
3742 | struct sockaddr_in *raddr; | |
3743 | struct sockaddr_in *cm_event_laddr; | |
3c2d774c GS |
3744 | |
3745 | /* get all our handles */ | |
3746 | cm_node = event->cm_node; | |
3747 | cm_id = cm_node->cm_id; | |
3748 | nes_debug(NES_DBG_CM, "cm_event_connected - %p - cm_id = %p\n", cm_node, cm_id); | |
3749 | nesqp = (struct nes_qp *)cm_id->provider_data; | |
3750 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3751 | nesdev = nesvnic->nesdev; | |
3752 | nesadapter = nesdev->nesadapter; | |
24d44a39 SW |
3753 | laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3754 | raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
3755 | cm_event_laddr = (struct sockaddr_in *)&cm_event.local_addr; | |
3c2d774c | 3756 | |
615eb715 | 3757 | if (nesqp->destroyed) |
3c2d774c | 3758 | return; |
3c2d774c GS |
3759 | atomic_inc(&cm_connecteds); |
3760 | nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" | |
615eb715 | 3761 | " local port 0x%04X. jiffies = %lu.\n", |
24d44a39 SW |
3762 | nesqp->hwqp.qp_id, ntohl(raddr->sin_addr.s_addr), |
3763 | ntohs(raddr->sin_port), ntohs(laddr->sin_port), jiffies); | |
3c2d774c GS |
3764 | |
3765 | nes_cm_init_tsa_conn(nesqp, cm_node); | |
3766 | ||
3767 | /* set the QP tsa context */ | |
5647263c TN |
3768 | nesqp->nesqp_context->tcpPorts[0] = |
3769 | cpu_to_le16(cm_node->mapped_loc_port); | |
3770 | nesqp->nesqp_context->tcpPorts[1] = | |
3771 | cpu_to_le16(cm_node->mapped_rem_port); | |
3772 | nesqp->nesqp_context->ip0 = cpu_to_le32(cm_node->mapped_rem_addr); | |
3c2d774c GS |
3773 | |
3774 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
6492cdf3 FL |
3775 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3776 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3777 | nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32( |
6492cdf3 FL |
3778 | nes_arp_table(nesdev, |
3779 | le32_to_cpu(nesqp->nesqp_context->ip0), | |
3c2d774c GS |
3780 | NULL, NES_ARP_RESOLVE) << 16); |
3781 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
3782 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); | |
3783 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3784 | nesqp->nesqp_context->ird_ord_sizes |= | |
6492cdf3 FL |
3785 | cpu_to_le32((u32)1 << |
3786 | NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT); | |
4ac79a70 TN |
3787 | nesqp->nesqp_context->ird_ord_sizes |= |
3788 | cpu_to_le32((u32)cm_node->ord_size); | |
3c2d774c GS |
3789 | |
3790 | /* Adjust tail for not having a LSMM */ | |
615eb715 | 3791 | /*nesqp->hwqp.sq_tail = 1;*/ |
3c2d774c | 3792 | |
615eb715 | 3793 | build_rdma0_msg(cm_node, &nesqp); |
6492cdf3 | 3794 | |
615eb715 TN |
3795 | nes_write32(nesdev->regs + NES_WQE_ALLOC, |
3796 | (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); | |
3c2d774c GS |
3797 | |
3798 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
3799 | ||
6492cdf3 FL |
3800 | nes_quad.DstIpAdrIndex = |
3801 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
5647263c TN |
3802 | nes_quad.SrcIpadr = htonl(cm_node->mapped_rem_addr); |
3803 | nes_quad.TcpPorts[0] = htons(cm_node->mapped_rem_port); | |
3804 | nes_quad.TcpPorts[1] = htons(cm_node->mapped_loc_port); | |
3c2d774c GS |
3805 | |
3806 | /* Produce hash key */ | |
30da7cff FL |
3807 | crc_value = get_crc_value(&nes_quad); |
3808 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3809 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, After CRC = 0x%08X\n", |
615eb715 | 3810 | nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask); |
3c2d774c GS |
3811 | |
3812 | nesqp->hte_index &= nesadapter->hte_index_mask; | |
3813 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3814 | ||
3815 | nesqp->ietf_frame = &cm_node->mpa_frame; | |
615eb715 | 3816 | nesqp->private_data_len = (u8)cm_node->mpa_frame_size; |
3c2d774c GS |
3817 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); |
3818 | ||
3c2d774c GS |
3819 | /* notify OF layer we successfully created the requested connection */ |
3820 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
d0c49bf3 | 3821 | cm_event.status = 0; |
3c2d774c | 3822 | cm_event.provider_data = cm_id->provider_data; |
24d44a39 SW |
3823 | cm_event_laddr->sin_family = AF_INET; |
3824 | cm_event_laddr->sin_port = laddr->sin_port; | |
3c2d774c GS |
3825 | cm_event.remote_addr = cm_id->remote_addr; |
3826 | ||
6492cdf3 | 3827 | cm_event.private_data = (void *)event->cm_node->mpa_frame_buf; |
615eb715 TN |
3828 | cm_event.private_data_len = (u8)event->cm_node->mpa_frame_size; |
3829 | cm_event.ird = cm_node->ird_size; | |
3830 | cm_event.ord = cm_node->ord_size; | |
3c2d774c | 3831 | |
5647263c | 3832 | cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); |
3c2d774c GS |
3833 | ret = cm_id->event_handler(cm_id, &cm_event); |
3834 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3835 | ||
3836 | if (ret) | |
6492cdf3 | 3837 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3838 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 FL |
3839 | attr.qp_state = IB_QPS_RTS; |
3840 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3841 | |
6492cdf3 | 3842 | nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = " |
615eb715 | 3843 | "%lu\n", nesqp->hwqp.qp_id, jiffies); |
3c2d774c GS |
3844 | |
3845 | return; | |
3846 | } | |
3847 | ||
3848 | ||
3849 | /** | |
3850 | * cm_event_connect_error | |
3851 | */ | |
1a855fbf | 3852 | static void cm_event_connect_error(struct nes_cm_event *event) |
3c2d774c GS |
3853 | { |
3854 | struct nes_qp *nesqp; | |
3855 | struct iw_cm_id *cm_id; | |
3856 | struct iw_cm_event cm_event; | |
3857 | /* struct nes_cm_info cm_info; */ | |
3858 | int ret; | |
3859 | ||
3860 | if (!event->cm_node) | |
3861 | return; | |
3862 | ||
3863 | cm_id = event->cm_node->cm_id; | |
615eb715 | 3864 | if (!cm_id) |
3c2d774c | 3865 | return; |
3c2d774c GS |
3866 | |
3867 | nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id); | |
3868 | nesqp = cm_id->provider_data; | |
3869 | ||
615eb715 | 3870 | if (!nesqp) |
3c2d774c | 3871 | return; |
3c2d774c GS |
3872 | |
3873 | /* notify OF layer about this connection error event */ | |
3874 | /* cm_id->rem_ref(cm_id); */ | |
3875 | nesqp->cm_id = NULL; | |
3876 | cm_id->provider_data = NULL; | |
3877 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
c5a7d489 | 3878 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3879 | cm_event.provider_data = cm_id->provider_data; |
3880 | cm_event.local_addr = cm_id->local_addr; | |
3881 | cm_event.remote_addr = cm_id->remote_addr; | |
3882 | cm_event.private_data = NULL; | |
3883 | cm_event.private_data_len = 0; | |
3884 | ||
24d44a39 SW |
3885 | #ifdef CONFIG_INFINIBAND_NES_DEBUG |
3886 | { | |
3887 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) | |
3888 | &cm_event.local_addr; | |
3889 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
3890 | &cm_event.remote_addr; | |
3891 | nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, remote_addr=%08x\n", | |
3892 | cm_event_laddr->sin_addr.s_addr, cm_event_raddr->sin_addr.s_addr); | |
3893 | } | |
3894 | #endif | |
3c2d774c GS |
3895 | |
3896 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3897 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3898 | if (ret) | |
6492cdf3 | 3899 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3900 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 | 3901 | cm_id->rem_ref(cm_id); |
3c2d774c | 3902 | |
6492cdf3 | 3903 | rem_ref_cm_node(event->cm_node->cm_core, event->cm_node); |
3c2d774c GS |
3904 | return; |
3905 | } | |
3906 | ||
3907 | ||
3908 | /** | |
3909 | * cm_event_reset | |
3910 | */ | |
1a855fbf | 3911 | static void cm_event_reset(struct nes_cm_event *event) |
3c2d774c GS |
3912 | { |
3913 | struct nes_qp *nesqp; | |
3914 | struct iw_cm_id *cm_id; | |
3915 | struct iw_cm_event cm_event; | |
3916 | /* struct nes_cm_info cm_info; */ | |
3917 | int ret; | |
3918 | ||
3919 | if (!event->cm_node) | |
3920 | return; | |
3921 | ||
3922 | if (!event->cm_node->cm_id) | |
3923 | return; | |
3924 | ||
3925 | cm_id = event->cm_node->cm_id; | |
3926 | ||
3927 | nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id); | |
3928 | nesqp = cm_id->provider_data; | |
f9f3f1e0 FL |
3929 | if (!nesqp) |
3930 | return; | |
3c2d774c GS |
3931 | |
3932 | nesqp->cm_id = NULL; | |
3933 | /* cm_id->provider_data = NULL; */ | |
3934 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
d0c49bf3 | 3935 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3936 | cm_event.provider_data = cm_id->provider_data; |
3937 | cm_event.local_addr = cm_id->local_addr; | |
3938 | cm_event.remote_addr = cm_id->remote_addr; | |
3939 | cm_event.private_data = NULL; | |
3940 | cm_event.private_data_len = 0; | |
3941 | ||
183ecfa3 | 3942 | cm_id->add_ref(cm_id); |
f9f3f1e0 | 3943 | ret = cm_id->event_handler(cm_id, &cm_event); |
183ecfa3 FL |
3944 | atomic_inc(&cm_closes); |
3945 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 3946 | cm_event.status = 0; |
183ecfa3 FL |
3947 | cm_event.provider_data = cm_id->provider_data; |
3948 | cm_event.local_addr = cm_id->local_addr; | |
3949 | cm_event.remote_addr = cm_id->remote_addr; | |
3950 | cm_event.private_data = NULL; | |
3951 | cm_event.private_data_len = 0; | |
3952 | nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node); | |
3953 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3954 | ||
3c2d774c GS |
3955 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3956 | ||
3957 | ||
3958 | /* notify OF layer about this connection error event */ | |
3959 | cm_id->rem_ref(cm_id); | |
3960 | ||
3961 | return; | |
3962 | } | |
3963 | ||
3964 | ||
3965 | /** | |
3966 | * cm_event_mpa_req | |
3967 | */ | |
1a855fbf | 3968 | static void cm_event_mpa_req(struct nes_cm_event *event) |
3c2d774c | 3969 | { |
615eb715 | 3970 | struct iw_cm_id *cm_id; |
3c2d774c GS |
3971 | struct iw_cm_event cm_event; |
3972 | int ret; | |
3973 | struct nes_cm_node *cm_node; | |
24d44a39 SW |
3974 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) |
3975 | &cm_event.local_addr; | |
3976 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
3977 | &cm_event.remote_addr; | |
3c2d774c GS |
3978 | |
3979 | cm_node = event->cm_node; | |
3980 | if (!cm_node) | |
3981 | return; | |
3982 | cm_id = cm_node->cm_id; | |
3983 | ||
3984 | atomic_inc(&cm_connect_reqs); | |
3985 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 3986 | cm_node, cm_id, jiffies); |
3c2d774c GS |
3987 | |
3988 | cm_event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
d0c49bf3 | 3989 | cm_event.status = 0; |
3c2d774c GS |
3990 | cm_event.provider_data = (void *)cm_node; |
3991 | ||
24d44a39 SW |
3992 | cm_event_laddr->sin_family = AF_INET; |
3993 | cm_event_laddr->sin_port = htons(event->cm_info.loc_port); | |
3994 | cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
3c2d774c | 3995 | |
24d44a39 SW |
3996 | cm_event_raddr->sin_family = AF_INET; |
3997 | cm_event_raddr->sin_port = htons(event->cm_info.rem_port); | |
3998 | cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
9d5ab133 | 3999 | cm_event.private_data = cm_node->mpa_frame_buf; |
615eb715 | 4000 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
4ac79a70 TN |
4001 | if (cm_node->mpa_frame_rev == IETF_MPA_V1) { |
4002 | cm_event.ird = NES_MAX_IRD; | |
4003 | cm_event.ord = NES_MAX_ORD; | |
4004 | } else { | |
615eb715 TN |
4005 | cm_event.ird = cm_node->ird_size; |
4006 | cm_event.ord = cm_node->ord_size; | |
4ac79a70 | 4007 | } |
9d5ab133 FL |
4008 | |
4009 | ret = cm_id->event_handler(cm_id, &cm_event); | |
4010 | if (ret) | |
4011 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", | |
615eb715 | 4012 | __func__, __LINE__, ret); |
9d5ab133 FL |
4013 | return; |
4014 | } | |
4015 | ||
4016 | ||
4017 | static void cm_event_mpa_reject(struct nes_cm_event *event) | |
4018 | { | |
615eb715 | 4019 | struct iw_cm_id *cm_id; |
9d5ab133 FL |
4020 | struct iw_cm_event cm_event; |
4021 | struct nes_cm_node *cm_node; | |
4022 | int ret; | |
24d44a39 SW |
4023 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) |
4024 | &cm_event.local_addr; | |
4025 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
4026 | &cm_event.remote_addr; | |
9d5ab133 FL |
4027 | |
4028 | cm_node = event->cm_node; | |
4029 | if (!cm_node) | |
4030 | return; | |
4031 | cm_id = cm_node->cm_id; | |
4032 | ||
4033 | atomic_inc(&cm_connect_reqs); | |
4034 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 4035 | cm_node, cm_id, jiffies); |
9d5ab133 FL |
4036 | |
4037 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
4038 | cm_event.status = -ECONNREFUSED; | |
4039 | cm_event.provider_data = cm_id->provider_data; | |
4040 | ||
24d44a39 SW |
4041 | cm_event_laddr->sin_family = AF_INET; |
4042 | cm_event_laddr->sin_port = htons(event->cm_info.loc_port); | |
4043 | cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
9d5ab133 | 4044 | |
24d44a39 SW |
4045 | cm_event_raddr->sin_family = AF_INET; |
4046 | cm_event_raddr->sin_port = htons(event->cm_info.rem_port); | |
4047 | cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
3c2d774c | 4048 | |
9d5ab133 | 4049 | cm_event.private_data = cm_node->mpa_frame_buf; |
615eb715 | 4050 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
9d5ab133 FL |
4051 | |
4052 | nes_debug(NES_DBG_CM, "call CM_EVENT_MPA_REJECTED, local_addr=%08x, " | |
615eb715 | 4053 | "remove_addr=%08x\n", |
24d44a39 SW |
4054 | cm_event_laddr->sin_addr.s_addr, |
4055 | cm_event_raddr->sin_addr.s_addr); | |
3c2d774c GS |
4056 | |
4057 | ret = cm_id->event_handler(cm_id, &cm_event); | |
4058 | if (ret) | |
9d5ab133 | 4059 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", |
615eb715 | 4060 | __func__, __LINE__, ret); |
3c2d774c GS |
4061 | |
4062 | return; | |
4063 | } | |
4064 | ||
4065 | ||
4066 | static void nes_cm_event_handler(struct work_struct *); | |
4067 | ||
4068 | /** | |
4069 | * nes_cm_post_event | |
4070 | * post an event to the cm event handler | |
4071 | */ | |
1a855fbf | 4072 | static int nes_cm_post_event(struct nes_cm_event *event) |
3c2d774c GS |
4073 | { |
4074 | atomic_inc(&event->cm_node->cm_core->events_posted); | |
4075 | add_ref_cm_node(event->cm_node); | |
4076 | event->cm_info.cm_id->add_ref(event->cm_info.cm_id); | |
4077 | INIT_WORK(&event->event_work, nes_cm_event_handler); | |
6492cdf3 | 4078 | nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n", |
615eb715 | 4079 | event->cm_node, event); |
3c2d774c GS |
4080 | |
4081 | queue_work(event->cm_node->cm_core->event_wq, &event->event_work); | |
4082 | ||
4083 | nes_debug(NES_DBG_CM, "Exit\n"); | |
4084 | return 0; | |
4085 | } | |
4086 | ||
4087 | ||
4088 | /** | |
4089 | * nes_cm_event_handler | |
4090 | * worker function to handle cm events | |
4091 | * will free instance of nes_cm_event | |
4092 | */ | |
4093 | static void nes_cm_event_handler(struct work_struct *work) | |
4094 | { | |
6492cdf3 | 4095 | struct nes_cm_event *event = container_of(work, struct nes_cm_event, |
615eb715 | 4096 | event_work); |
3c2d774c GS |
4097 | struct nes_cm_core *cm_core; |
4098 | ||
6492cdf3 | 4099 | if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core)) |
3c2d774c | 4100 | return; |
6492cdf3 | 4101 | |
3c2d774c GS |
4102 | cm_core = event->cm_node->cm_core; |
4103 | nes_debug(NES_DBG_CM, "event=%p, event->type=%u, events posted=%u\n", | |
615eb715 | 4104 | event, event->type, atomic_read(&cm_core->events_posted)); |
3c2d774c GS |
4105 | |
4106 | switch (event->type) { | |
6492cdf3 FL |
4107 | case NES_CM_EVENT_MPA_REQ: |
4108 | cm_event_mpa_req(event); | |
4109 | nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n", | |
615eb715 | 4110 | event->cm_node); |
6492cdf3 FL |
4111 | break; |
4112 | case NES_CM_EVENT_RESET: | |
4113 | nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n", | |
615eb715 | 4114 | event->cm_node); |
6492cdf3 FL |
4115 | cm_event_reset(event); |
4116 | break; | |
4117 | case NES_CM_EVENT_CONNECTED: | |
4118 | if ((!event->cm_node->cm_id) || | |
615eb715 | 4119 | (event->cm_node->state != NES_CM_STATE_TSA)) |
3c2d774c | 4120 | break; |
6492cdf3 FL |
4121 | cm_event_connected(event); |
4122 | nes_debug(NES_DBG_CM, "CM Event: CONNECTED\n"); | |
4123 | break; | |
9d5ab133 FL |
4124 | case NES_CM_EVENT_MPA_REJECT: |
4125 | if ((!event->cm_node->cm_id) || | |
615eb715 | 4126 | (event->cm_node->state == NES_CM_STATE_TSA)) |
9d5ab133 FL |
4127 | break; |
4128 | cm_event_mpa_reject(event); | |
4129 | nes_debug(NES_DBG_CM, "CM Event: REJECT\n"); | |
4130 | break; | |
4131 | ||
6492cdf3 FL |
4132 | case NES_CM_EVENT_ABORTED: |
4133 | if ((!event->cm_node->cm_id) || | |
615eb715 | 4134 | (event->cm_node->state == NES_CM_STATE_TSA)) |
3c2d774c | 4135 | break; |
6492cdf3 FL |
4136 | cm_event_connect_error(event); |
4137 | nes_debug(NES_DBG_CM, "CM Event: ABORTED\n"); | |
4138 | break; | |
4139 | case NES_CM_EVENT_DROPPED_PKT: | |
4140 | nes_debug(NES_DBG_CM, "CM Event: DROPPED PKT\n"); | |
4141 | break; | |
4142 | default: | |
4143 | nes_debug(NES_DBG_CM, "CM Event: UNKNOWN EVENT TYPE\n"); | |
4144 | break; | |
3c2d774c GS |
4145 | } |
4146 | ||
4147 | atomic_dec(&cm_core->events_posted); | |
4148 | event->cm_info.cm_id->rem_ref(event->cm_info.cm_id); | |
4149 | rem_ref_cm_node(cm_core, event->cm_node); | |
4150 | kfree(event); | |
4151 | ||
4152 | return; | |
4153 | } |