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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 | ||
230da36a TN |
599 | static void record_sockaddr_info(struct sockaddr_storage *addr_info, |
600 | nes_addr_t *ip_addr, u16 *port_num) | |
601 | { | |
602 | struct sockaddr_in *in_addr = (struct sockaddr_in *)addr_info; | |
603 | ||
604 | if (in_addr->sin_family == AF_INET) { | |
605 | *ip_addr = ntohl(in_addr->sin_addr.s_addr); | |
606 | *port_num = ntohs(in_addr->sin_port); | |
607 | } | |
608 | } | |
609 | ||
5647263c TN |
610 | /* |
611 | * nes_record_pm_msg - Save the received mapping info | |
612 | */ | |
613 | static void nes_record_pm_msg(struct nes_cm_info *cm_info, | |
614 | struct iwpm_sa_data *pm_msg) | |
615 | { | |
230da36a TN |
616 | record_sockaddr_info(&pm_msg->mapped_loc_addr, |
617 | &cm_info->mapped_loc_addr, &cm_info->mapped_loc_port); | |
618 | ||
619 | record_sockaddr_info(&pm_msg->mapped_rem_addr, | |
620 | &cm_info->mapped_rem_addr, &cm_info->mapped_rem_port); | |
621 | } | |
622 | ||
623 | /* | |
624 | * nes_get_reminfo - Get the address info of the remote connecting peer | |
625 | */ | |
626 | static int nes_get_remote_addr(struct nes_cm_node *cm_node) | |
627 | { | |
628 | struct sockaddr_storage mapped_loc_addr, mapped_rem_addr; | |
629 | struct sockaddr_storage remote_addr; | |
630 | int ret; | |
631 | ||
632 | nes_create_sockaddr(htonl(cm_node->mapped_loc_addr), | |
633 | htons(cm_node->mapped_loc_port), &mapped_loc_addr); | |
634 | nes_create_sockaddr(htonl(cm_node->mapped_rem_addr), | |
635 | htons(cm_node->mapped_rem_port), &mapped_rem_addr); | |
636 | ||
637 | ret = iwpm_get_remote_info(&mapped_loc_addr, &mapped_rem_addr, | |
638 | &remote_addr, RDMA_NL_NES); | |
639 | if (ret) | |
640 | nes_debug(NES_DBG_CM, "Unable to find remote peer address info\n"); | |
641 | else | |
642 | record_sockaddr_info(&remote_addr, &cm_node->rem_addr, | |
643 | &cm_node->rem_port); | |
644 | return ret; | |
5647263c TN |
645 | } |
646 | ||
3c2d774c GS |
647 | /** |
648 | * print_core - dump a cm core | |
649 | */ | |
650 | static void print_core(struct nes_cm_core *core) | |
651 | { | |
652 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
653 | nes_debug(NES_DBG_CM, "CM Core -- (core = %p )\n", core); | |
654 | if (!core) | |
655 | return; | |
656 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
3c2d774c | 657 | |
615eb715 | 658 | nes_debug(NES_DBG_CM, "State : %u \n", core->state); |
3c2d774c | 659 | |
3c2d774c GS |
660 | nes_debug(NES_DBG_CM, "Listen Nodes : %u \n", atomic_read(&core->listen_node_cnt)); |
661 | nes_debug(NES_DBG_CM, "Active Nodes : %u \n", atomic_read(&core->node_cnt)); | |
662 | ||
663 | nes_debug(NES_DBG_CM, "core : %p \n", core); | |
664 | ||
665 | nes_debug(NES_DBG_CM, "-------------- end core ---------------\n"); | |
666 | } | |
667 | ||
4ac79a70 TN |
668 | static void record_ird_ord(struct nes_cm_node *cm_node, |
669 | u16 conn_ird, u16 conn_ord) | |
670 | { | |
671 | if (conn_ird > NES_MAX_IRD) | |
672 | conn_ird = NES_MAX_IRD; | |
673 | ||
674 | if (conn_ord > NES_MAX_ORD) | |
675 | conn_ord = NES_MAX_ORD; | |
676 | ||
677 | cm_node->ird_size = conn_ird; | |
678 | cm_node->ord_size = conn_ord; | |
679 | } | |
680 | ||
615eb715 TN |
681 | /** |
682 | * cm_build_mpa_frame - build a MPA V1 frame or MPA V2 frame | |
683 | */ | |
684 | static int cm_build_mpa_frame(struct nes_cm_node *cm_node, u8 **start_buff, | |
685 | u16 *buff_len, u8 *pci_mem, u8 mpa_key) | |
686 | { | |
687 | int ret = 0; | |
688 | ||
689 | *start_buff = (pci_mem) ? pci_mem : &cm_node->mpa_frame_buf[0]; | |
690 | ||
691 | switch (cm_node->mpa_frame_rev) { | |
692 | case IETF_MPA_V1: | |
693 | *start_buff = (u8 *)*start_buff + sizeof(struct ietf_rtr_msg); | |
694 | *buff_len = sizeof(struct ietf_mpa_v1) + cm_node->mpa_frame_size; | |
695 | build_mpa_v1(cm_node, *start_buff, mpa_key); | |
696 | break; | |
697 | case IETF_MPA_V2: | |
698 | *buff_len = sizeof(struct ietf_mpa_v2) + cm_node->mpa_frame_size; | |
699 | build_mpa_v2(cm_node, *start_buff, mpa_key); | |
700 | break; | |
701 | default: | |
702 | ret = -EINVAL; | |
703 | } | |
704 | return ret; | |
705 | } | |
706 | ||
707 | /** | |
708 | * build_mpa_v2 - build a MPA V2 frame | |
709 | */ | |
710 | static void build_mpa_v2(struct nes_cm_node *cm_node, | |
711 | void *start_addr, u8 mpa_key) | |
712 | { | |
713 | struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr; | |
714 | struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg; | |
8dd87fba TN |
715 | u16 ctrl_ird; |
716 | u16 ctrl_ord; | |
615eb715 TN |
717 | |
718 | /* initialize the upper 5 bytes of the frame */ | |
719 | build_mpa_v1(cm_node, start_addr, mpa_key); | |
720 | mpa_frame->flags |= IETF_MPA_V2_FLAG; /* set a bit to indicate MPA V2 */ | |
721 | mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE); | |
722 | ||
723 | /* initialize RTR msg */ | |
4ac79a70 TN |
724 | if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) { |
725 | ctrl_ird = IETF_NO_IRD_ORD; | |
726 | ctrl_ord = IETF_NO_IRD_ORD; | |
727 | } else { | |
728 | ctrl_ird = cm_node->ird_size & IETF_NO_IRD_ORD; | |
729 | ctrl_ord = cm_node->ord_size & IETF_NO_IRD_ORD; | |
730 | } | |
8dd87fba TN |
731 | ctrl_ird |= IETF_PEER_TO_PEER; |
732 | ctrl_ird |= IETF_FLPDU_ZERO_LEN; | |
615eb715 TN |
733 | |
734 | switch (mpa_key) { | |
735 | case MPA_KEY_REQUEST: | |
8dd87fba TN |
736 | ctrl_ord |= IETF_RDMA0_WRITE; |
737 | ctrl_ord |= IETF_RDMA0_READ; | |
615eb715 TN |
738 | break; |
739 | case MPA_KEY_REPLY: | |
740 | switch (cm_node->send_rdma0_op) { | |
741 | case SEND_RDMA_WRITE_ZERO: | |
8dd87fba | 742 | ctrl_ord |= IETF_RDMA0_WRITE; |
615eb715 TN |
743 | break; |
744 | case SEND_RDMA_READ_ZERO: | |
8dd87fba | 745 | ctrl_ord |= IETF_RDMA0_READ; |
615eb715 TN |
746 | break; |
747 | } | |
748 | } | |
8dd87fba TN |
749 | rtr_msg->ctrl_ird = htons(ctrl_ird); |
750 | rtr_msg->ctrl_ord = htons(ctrl_ord); | |
615eb715 TN |
751 | } |
752 | ||
753 | /** | |
754 | * build_mpa_v1 - build a MPA V1 frame | |
755 | */ | |
756 | static void build_mpa_v1(struct nes_cm_node *cm_node, void *start_addr, u8 mpa_key) | |
757 | { | |
758 | struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr; | |
759 | ||
760 | switch (mpa_key) { | |
761 | case MPA_KEY_REQUEST: | |
762 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE); | |
763 | break; | |
764 | case MPA_KEY_REPLY: | |
765 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE); | |
766 | break; | |
767 | } | |
768 | mpa_frame->flags = IETF_MPA_FLAGS_CRC; | |
769 | mpa_frame->rev = cm_node->mpa_frame_rev; | |
770 | mpa_frame->priv_data_len = htons(cm_node->mpa_frame_size); | |
771 | } | |
772 | ||
773 | static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_addr) | |
774 | { | |
775 | u64 u64temp; | |
776 | struct nes_qp *nesqp = *nesqp_addr; | |
777 | struct nes_hw_qp_wqe *wqe = &nesqp->hwqp.sq_vbase[0]; | |
778 | ||
43adff39 | 779 | u64temp = (unsigned long)nesqp->nesuqp_addr; |
615eb715 TN |
780 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
781 | set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp); | |
782 | ||
783 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0; | |
784 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0; | |
785 | ||
786 | switch (cm_node->send_rdma0_op) { | |
787 | case SEND_RDMA_WRITE_ZERO: | |
788 | nes_debug(NES_DBG_CM, "Sending first write.\n"); | |
789 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
790 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAW); | |
791 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0; | |
792 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0; | |
793 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; | |
794 | break; | |
795 | ||
796 | case SEND_RDMA_READ_ZERO: | |
797 | default: | |
079abea6 JL |
798 | if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO) |
799 | WARN(1, "Unsupported RDMA0 len operation=%u\n", | |
800 | cm_node->send_rdma0_op); | |
615eb715 TN |
801 | nes_debug(NES_DBG_CM, "Sending first rdma operation.\n"); |
802 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
803 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAR); | |
804 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = 1; | |
805 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = 0; | |
806 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 0; | |
807 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = 1; | |
808 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 1; | |
809 | break; | |
810 | } | |
811 | ||
812 | if (nesqp->sq_kmapped) { | |
813 | nesqp->sq_kmapped = 0; | |
814 | kunmap(nesqp->page); | |
815 | } | |
816 | ||
817 | /*use the reserved spot on the WQ for the extra first WQE*/ | |
818 | nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
819 | NES_QPCONTEXT_ORDIRD_WRPDU | | |
820 | NES_QPCONTEXT_ORDIRD_ALSMM)); | |
821 | nesqp->skip_lsmm = 1; | |
822 | nesqp->hwqp.sq_tail = 0; | |
823 | } | |
3c2d774c GS |
824 | |
825 | /** | |
826 | * schedule_nes_timer | |
827 | * note - cm_node needs to be protected before calling this. Encase in: | |
828 | * rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node); | |
829 | */ | |
830 | int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 TN |
831 | enum nes_timer_type type, int send_retrans, |
832 | int close_when_complete) | |
3c2d774c | 833 | { |
615eb715 | 834 | unsigned long flags; |
6492cdf3 | 835 | struct nes_cm_core *cm_core = cm_node->cm_core; |
3c2d774c GS |
836 | struct nes_timer_entry *new_send; |
837 | int ret = 0; | |
3c2d774c GS |
838 | |
839 | new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC); | |
840 | if (!new_send) | |
9d5ab133 | 841 | return -ENOMEM; |
3c2d774c GS |
842 | |
843 | /* new_send->timetosend = currenttime */ | |
844 | new_send->retrycount = NES_DEFAULT_RETRYS; | |
845 | new_send->retranscount = NES_DEFAULT_RETRANS; | |
846 | new_send->skb = skb; | |
847 | new_send->timetosend = jiffies; | |
848 | new_send->type = type; | |
849 | new_send->netdev = cm_node->netdev; | |
850 | new_send->send_retrans = send_retrans; | |
851 | new_send->close_when_complete = close_when_complete; | |
852 | ||
853 | if (type == NES_TIMER_TYPE_CLOSE) { | |
615eb715 | 854 | new_send->timetosend += (HZ / 10); |
9d5ab133 | 855 | if (cm_node->recv_entry) { |
79fc3d74 | 856 | kfree(new_send); |
9d5ab133 FL |
857 | WARN_ON(1); |
858 | return -EINVAL; | |
859 | } | |
860 | cm_node->recv_entry = new_send; | |
3c2d774c GS |
861 | } |
862 | ||
863 | if (type == NES_TIMER_TYPE_SEND) { | |
b30db1c1 | 864 | new_send->seq_num = ntohl(tcp_hdr(skb)->seq); |
3c2d774c | 865 | atomic_inc(&new_send->skb->users); |
6492cdf3 FL |
866 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
867 | cm_node->send_entry = new_send; | |
868 | add_ref_cm_node(cm_node); | |
869 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
870 | new_send->timetosend = jiffies + NES_RETRY_TIMEOUT; | |
3c2d774c GS |
871 | |
872 | ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev); | |
873 | if (ret != NETDEV_TX_OK) { | |
6492cdf3 | 874 | nes_debug(NES_DBG_CM, "Error sending packet %p " |
615eb715 | 875 | "(jiffies = %lu)\n", new_send, jiffies); |
3c2d774c | 876 | new_send->timetosend = jiffies; |
5962c2c8 | 877 | ret = NETDEV_TX_OK; |
3c2d774c GS |
878 | } else { |
879 | cm_packets_sent++; | |
880 | if (!send_retrans) { | |
6492cdf3 | 881 | cleanup_retrans_entry(cm_node); |
3c2d774c | 882 | if (close_when_complete) |
6492cdf3 | 883 | rem_ref_cm_node(cm_core, cm_node); |
3c2d774c GS |
884 | return ret; |
885 | } | |
3c2d774c | 886 | } |
3c2d774c | 887 | } |
3c2d774c | 888 | |
00ad255d TN |
889 | if (!timer_pending(&cm_core->tcp_timer)) |
890 | mod_timer(&cm_core->tcp_timer, new_send->timetosend); | |
3c2d774c GS |
891 | |
892 | return ret; | |
893 | } | |
894 | ||
9d5ab133 FL |
895 | static void nes_retrans_expired(struct nes_cm_node *cm_node) |
896 | { | |
68237a0f | 897 | struct iw_cm_id *cm_id = cm_node->cm_id; |
dae58728 FL |
898 | enum nes_cm_node_state state = cm_node->state; |
899 | cm_node->state = NES_CM_STATE_CLOSED; | |
615eb715 | 900 | |
dae58728 | 901 | switch (state) { |
9d5ab133 FL |
902 | case NES_CM_STATE_SYN_RCVD: |
903 | case NES_CM_STATE_CLOSING: | |
904 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
905 | break; | |
906 | case NES_CM_STATE_LAST_ACK: | |
907 | case NES_CM_STATE_FIN_WAIT1: | |
68237a0f FL |
908 | if (cm_node->cm_id) |
909 | cm_id->rem_ref(cm_id); | |
9d5ab133 FL |
910 | send_reset(cm_node, NULL); |
911 | break; | |
912 | default: | |
69524e1a FL |
913 | add_ref_cm_node(cm_node); |
914 | send_reset(cm_node, NULL); | |
9d5ab133 FL |
915 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
916 | } | |
917 | } | |
918 | ||
919 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node) | |
920 | { | |
921 | struct nes_timer_entry *recv_entry = cm_node->recv_entry; | |
922 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
923 | struct nes_qp *nesqp; | |
924 | unsigned long qplockflags; | |
925 | ||
926 | if (!recv_entry) | |
927 | return; | |
928 | nesqp = (struct nes_qp *)recv_entry->skb; | |
929 | if (nesqp) { | |
930 | spin_lock_irqsave(&nesqp->lock, qplockflags); | |
931 | if (nesqp->cm_id) { | |
932 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
933 | "refcount = %d: HIT A " |
934 | "NES_TIMER_TYPE_CLOSE with something " | |
935 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
936 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
937 | nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; |
938 | nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; | |
939 | nesqp->ibqp_state = IB_QPS_ERR; | |
940 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
941 | nes_cm_disconn(nesqp); | |
942 | } else { | |
943 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
944 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
945 | "refcount = %d: HIT A " |
946 | "NES_TIMER_TYPE_CLOSE with nothing " | |
947 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
948 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
949 | } |
950 | } else if (rem_node) { | |
951 | /* TIME_WAIT state */ | |
952 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
953 | } | |
954 | if (cm_node->cm_id) | |
955 | cm_id->rem_ref(cm_id); | |
956 | kfree(recv_entry); | |
957 | cm_node->recv_entry = NULL; | |
958 | } | |
3c2d774c GS |
959 | |
960 | /** | |
961 | * nes_cm_timer_tick | |
962 | */ | |
1a855fbf | 963 | static void nes_cm_timer_tick(unsigned long pass) |
3c2d774c | 964 | { |
9d5ab133 | 965 | unsigned long flags; |
3c2d774c | 966 | unsigned long nexttimeout = jiffies + NES_LONG_TIME; |
3c2d774c GS |
967 | struct nes_cm_node *cm_node; |
968 | struct nes_timer_entry *send_entry, *recv_entry; | |
9d5ab133 FL |
969 | struct list_head *list_core_temp; |
970 | struct list_head *list_node; | |
3c2d774c | 971 | struct nes_cm_core *cm_core = g_cm_core; |
3c2d774c | 972 | u32 settimer = 0; |
4e9c3900 | 973 | unsigned long timetosend; |
3c2d774c | 974 | int ret = NETDEV_TX_OK; |
3c2d774c | 975 | |
879e5bd5 | 976 | struct list_head timer_list; |
615eb715 | 977 | |
879e5bd5 | 978 | INIT_LIST_HEAD(&timer_list); |
3c2d774c GS |
979 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
980 | ||
6492cdf3 | 981 | list_for_each_safe(list_node, list_core_temp, |
615eb715 | 982 | &cm_core->connected_nodes) { |
3c2d774c | 983 | cm_node = container_of(list_node, struct nes_cm_node, list); |
9d5ab133 | 984 | if ((cm_node->recv_entry) || (cm_node->send_entry)) { |
879e5bd5 FL |
985 | add_ref_cm_node(cm_node); |
986 | list_add(&cm_node->timer_entry, &timer_list); | |
987 | } | |
988 | } | |
989 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
990 | ||
991 | list_for_each_safe(list_node, list_core_temp, &timer_list) { | |
992 | cm_node = container_of(list_node, struct nes_cm_node, | |
615eb715 | 993 | timer_entry); |
9d5ab133 FL |
994 | recv_entry = cm_node->recv_entry; |
995 | ||
996 | if (recv_entry) { | |
6492cdf3 FL |
997 | if (time_after(recv_entry->timetosend, jiffies)) { |
998 | if (nexttimeout > recv_entry->timetosend || | |
615eb715 | 999 | !settimer) { |
3c2d774c GS |
1000 | nexttimeout = recv_entry->timetosend; |
1001 | settimer = 1; | |
1002 | } | |
615eb715 | 1003 | } else { |
9d5ab133 | 1004 | handle_recv_entry(cm_node, 1); |
615eb715 | 1005 | } |
3c2d774c | 1006 | } |
3c2d774c GS |
1007 | |
1008 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); | |
6492cdf3 FL |
1009 | do { |
1010 | send_entry = cm_node->send_entry; | |
1011 | if (!send_entry) | |
c5d321e5 | 1012 | break; |
3c2d774c GS |
1013 | if (time_after(send_entry->timetosend, jiffies)) { |
1014 | if (cm_node->state != NES_CM_STATE_TSA) { | |
6492cdf3 | 1015 | if ((nexttimeout > |
615eb715 TN |
1016 | send_entry->timetosend) || |
1017 | !settimer) { | |
6492cdf3 FL |
1018 | nexttimeout = |
1019 | send_entry->timetosend; | |
3c2d774c GS |
1020 | settimer = 1; |
1021 | } | |
3c2d774c | 1022 | } else { |
6492cdf3 | 1023 | free_retrans_entry(cm_node); |
3c2d774c | 1024 | } |
9d5ab133 | 1025 | break; |
3c2d774c | 1026 | } |
6492cdf3 FL |
1027 | |
1028 | if ((cm_node->state == NES_CM_STATE_TSA) || | |
615eb715 | 1029 | (cm_node->state == NES_CM_STATE_CLOSED)) { |
6492cdf3 | 1030 | free_retrans_entry(cm_node); |
c5d321e5 | 1031 | break; |
3c2d774c GS |
1032 | } |
1033 | ||
6492cdf3 | 1034 | if (!send_entry->retranscount || |
615eb715 | 1035 | !send_entry->retrycount) { |
3c2d774c | 1036 | cm_packets_dropped++; |
6492cdf3 | 1037 | free_retrans_entry(cm_node); |
9d5ab133 | 1038 | |
6492cdf3 FL |
1039 | spin_unlock_irqrestore( |
1040 | &cm_node->retrans_list_lock, flags); | |
9d5ab133 FL |
1041 | nes_retrans_expired(cm_node); |
1042 | cm_node->state = NES_CM_STATE_CLOSED; | |
6492cdf3 | 1043 | spin_lock_irqsave(&cm_node->retrans_list_lock, |
615eb715 | 1044 | flags); |
c5d321e5 | 1045 | break; |
3c2d774c | 1046 | } |
3c2d774c GS |
1047 | atomic_inc(&send_entry->skb->users); |
1048 | cm_packets_retrans++; | |
6492cdf3 | 1049 | nes_debug(NES_DBG_CM, "Retransmitting send_entry %p " |
615eb715 TN |
1050 | "for node %p, jiffies = %lu, time to send = " |
1051 | "%lu, retranscount = %u, send_entry->seq_num = " | |
1052 | "0x%08X, cm_node->tcp_cntxt.rem_ack_num = " | |
1053 | "0x%08X\n", send_entry, cm_node, jiffies, | |
1054 | send_entry->timetosend, | |
1055 | send_entry->retranscount, | |
1056 | send_entry->seq_num, | |
1057 | cm_node->tcp_cntxt.rem_ack_num); | |
6492cdf3 FL |
1058 | |
1059 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, | |
615eb715 | 1060 | flags); |
3c2d774c | 1061 | ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev); |
6492cdf3 | 1062 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
3c2d774c | 1063 | if (ret != NETDEV_TX_OK) { |
6492cdf3 | 1064 | nes_debug(NES_DBG_CM, "rexmit failed for " |
615eb715 | 1065 | "node=%p\n", cm_node); |
3c2d774c | 1066 | cm_packets_bounced++; |
3c2d774c GS |
1067 | send_entry->retrycount--; |
1068 | nexttimeout = jiffies + NES_SHORT_TIME; | |
1069 | settimer = 1; | |
c5d321e5 | 1070 | break; |
3c2d774c GS |
1071 | } else { |
1072 | cm_packets_sent++; | |
1073 | } | |
6492cdf3 | 1074 | nes_debug(NES_DBG_CM, "Packet Sent: retrans count = " |
615eb715 TN |
1075 | "%u, retry count = %u.\n", |
1076 | send_entry->retranscount, | |
1077 | send_entry->retrycount); | |
3c2d774c GS |
1078 | if (send_entry->send_retrans) { |
1079 | send_entry->retranscount--; | |
4e9c3900 | 1080 | timetosend = (NES_RETRY_TIMEOUT << |
615eb715 | 1081 | (NES_DEFAULT_RETRANS - send_entry->retranscount)); |
4e9c3900 | 1082 | |
6492cdf3 | 1083 | send_entry->timetosend = jiffies + |
615eb715 | 1084 | min(timetosend, NES_MAX_TIMEOUT); |
6492cdf3 | 1085 | if (nexttimeout > send_entry->timetosend || |
615eb715 | 1086 | !settimer) { |
3c2d774c GS |
1087 | nexttimeout = send_entry->timetosend; |
1088 | settimer = 1; | |
1089 | } | |
3c2d774c GS |
1090 | } else { |
1091 | int close_when_complete; | |
6492cdf3 FL |
1092 | close_when_complete = |
1093 | send_entry->close_when_complete; | |
1094 | nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n", | |
615eb715 | 1095 | cm_node, cm_node->state); |
6492cdf3 FL |
1096 | free_retrans_entry(cm_node); |
1097 | if (close_when_complete) | |
1098 | rem_ref_cm_node(cm_node->cm_core, | |
615eb715 | 1099 | cm_node); |
3c2d774c | 1100 | } |
6492cdf3 | 1101 | } while (0); |
3c2d774c | 1102 | |
6492cdf3 FL |
1103 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
1104 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 1105 | } |
3c2d774c GS |
1106 | |
1107 | if (settimer) { | |
00ad255d TN |
1108 | if (!timer_pending(&cm_core->tcp_timer)) |
1109 | mod_timer(&cm_core->tcp_timer, nexttimeout); | |
3c2d774c GS |
1110 | } |
1111 | } | |
1112 | ||
1113 | ||
1114 | /** | |
1115 | * send_syn | |
1116 | */ | |
6492cdf3 | 1117 | static int send_syn(struct nes_cm_node *cm_node, u32 sendack, |
615eb715 | 1118 | struct sk_buff *skb) |
3c2d774c GS |
1119 | { |
1120 | int ret; | |
1121 | int flags = SET_SYN; | |
3c2d774c | 1122 | char optionsbuffer[sizeof(struct option_mss) + |
615eb715 TN |
1123 | sizeof(struct option_windowscale) + sizeof(struct option_base) + |
1124 | TCP_OPTIONS_PADDING]; | |
3c2d774c GS |
1125 | |
1126 | int optionssize = 0; | |
1127 | /* Sending MSS option */ | |
1128 | union all_known_options *options; | |
1129 | ||
1130 | if (!cm_node) | |
1131 | return -EINVAL; | |
1132 | ||
1133 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1134 | options->as_mss.optionnum = OPTION_NUMBER_MSS; | |
1135 | options->as_mss.length = sizeof(struct option_mss); | |
1136 | options->as_mss.mss = htons(cm_node->tcp_cntxt.mss); | |
1137 | optionssize += sizeof(struct option_mss); | |
1138 | ||
1139 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1140 | options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE; | |
1141 | options->as_windowscale.length = sizeof(struct option_windowscale); | |
1142 | options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale; | |
1143 | optionssize += sizeof(struct option_windowscale); | |
1144 | ||
6492cdf3 | 1145 | if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)) { |
3c2d774c GS |
1146 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
1147 | options->as_base.optionnum = OPTION_NUMBER_WRITE0; | |
1148 | options->as_base.length = sizeof(struct option_base); | |
1149 | optionssize += sizeof(struct option_base); | |
1150 | /* we need the size to be a multiple of 4 */ | |
1151 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1152 | options->as_end = 1; | |
1153 | optionssize += 1; | |
1154 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1155 | options->as_end = 1; | |
1156 | optionssize += 1; | |
1157 | } | |
1158 | ||
1159 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1160 | options->as_end = OPTION_NUMBER_END; | |
1161 | optionssize += 1; | |
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"); | |
1167 | return -1; | |
1168 | } | |
1169 | ||
1170 | if (sendack) | |
1171 | flags |= SET_ACK; | |
1172 | ||
1173 | form_cm_frame(skb, cm_node, optionsbuffer, optionssize, NULL, 0, flags); | |
1174 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1175 | ||
1176 | return ret; | |
1177 | } | |
1178 | ||
1179 | ||
1180 | /** | |
1181 | * send_reset | |
1182 | */ | |
6492cdf3 | 1183 | static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1184 | { |
1185 | int ret; | |
3c2d774c GS |
1186 | int flags = SET_RST | SET_ACK; |
1187 | ||
6492cdf3 | 1188 | if (!skb) |
e189062a | 1189 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1190 | if (!skb) { |
1191 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
9d5ab133 | 1192 | return -ENOMEM; |
3c2d774c GS |
1193 | } |
1194 | ||
3c2d774c GS |
1195 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags); |
1196 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1); | |
1197 | ||
1198 | return ret; | |
1199 | } | |
1200 | ||
1201 | ||
1202 | /** | |
1203 | * send_ack | |
1204 | */ | |
6492cdf3 | 1205 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1206 | { |
1207 | int ret; | |
6492cdf3 FL |
1208 | |
1209 | if (!skb) | |
e189062a | 1210 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1211 | |
1212 | if (!skb) { | |
1213 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1214 | return -1; | |
1215 | } | |
1216 | ||
1217 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK); | |
1218 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 0); | |
1219 | ||
1220 | return ret; | |
1221 | } | |
1222 | ||
1223 | ||
1224 | /** | |
1225 | * send_fin | |
1226 | */ | |
1a855fbf | 1227 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1228 | { |
1229 | int ret; | |
1230 | ||
1231 | /* if we didn't get a frame get one */ | |
1232 | if (!skb) | |
e189062a | 1233 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1234 | |
1235 | if (!skb) { | |
1236 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1237 | return -1; | |
1238 | } | |
1239 | ||
1240 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK | SET_FIN); | |
1241 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1242 | ||
1243 | return ret; | |
1244 | } | |
1245 | ||
1246 | ||
3c2d774c GS |
1247 | /** |
1248 | * find_node - find a cm node that matches the reference cm node | |
1249 | */ | |
1250 | static struct nes_cm_node *find_node(struct nes_cm_core *cm_core, | |
615eb715 | 1251 | u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr) |
3c2d774c GS |
1252 | { |
1253 | unsigned long flags; | |
3c2d774c GS |
1254 | struct list_head *hte; |
1255 | struct nes_cm_node *cm_node; | |
1256 | ||
3c2d774c GS |
1257 | /* get a handle on the hte */ |
1258 | hte = &cm_core->connected_nodes; | |
1259 | ||
3c2d774c GS |
1260 | /* walk list and find cm_node associated with this session ID */ |
1261 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
4e96a774 | 1262 | list_for_each_entry(cm_node, hte, list) { |
3c2d774c GS |
1263 | /* compare quad, return node handle if a match */ |
1264 | nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n", | |
615eb715 TN |
1265 | cm_node->loc_addr, cm_node->loc_port, |
1266 | loc_addr, loc_port, | |
1267 | cm_node->rem_addr, cm_node->rem_port, | |
1268 | rem_addr, rem_port); | |
5647263c TN |
1269 | if ((cm_node->mapped_loc_addr == loc_addr) && |
1270 | (cm_node->mapped_loc_port == loc_port) && | |
1271 | (cm_node->mapped_rem_addr == rem_addr) && | |
1272 | (cm_node->mapped_rem_port == rem_port)) { | |
1273 | ||
3c2d774c GS |
1274 | add_ref_cm_node(cm_node); |
1275 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1276 | return cm_node; | |
1277 | } | |
1278 | } | |
1279 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1280 | ||
1281 | /* no owner node */ | |
1282 | return NULL; | |
1283 | } | |
1284 | ||
1285 | ||
1286 | /** | |
1287 | * find_listener - find a cm node listening on this addr-port pair | |
1288 | */ | |
1289 | static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core, | |
5647263c TN |
1290 | nes_addr_t dst_addr, u16 dst_port, |
1291 | enum nes_cm_listener_state listener_state, int local) | |
3c2d774c GS |
1292 | { |
1293 | unsigned long flags; | |
3c2d774c | 1294 | struct nes_cm_listener *listen_node; |
5647263c TN |
1295 | nes_addr_t listen_addr; |
1296 | u16 listen_port; | |
3c2d774c GS |
1297 | |
1298 | /* walk list and find cm_node associated with this session ID */ | |
1299 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
4e96a774 | 1300 | list_for_each_entry(listen_node, &cm_core->listen_list.list, list) { |
5647263c TN |
1301 | if (local) { |
1302 | listen_addr = listen_node->loc_addr; | |
1303 | listen_port = listen_node->loc_port; | |
1304 | } else { | |
1305 | listen_addr = listen_node->mapped_loc_addr; | |
1306 | listen_port = listen_node->mapped_loc_port; | |
1307 | } | |
3c2d774c | 1308 | /* compare node pair, return node handle if a match */ |
5647263c TN |
1309 | if (((listen_addr == dst_addr) || |
1310 | listen_addr == 0x00000000) && | |
1311 | (listen_port == dst_port) && | |
615eb715 | 1312 | (listener_state & listen_node->listener_state)) { |
3c2d774c GS |
1313 | atomic_inc(&listen_node->ref_count); |
1314 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1315 | return listen_node; | |
1316 | } | |
1317 | } | |
1318 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1319 | ||
3c2d774c GS |
1320 | /* no listener */ |
1321 | return NULL; | |
1322 | } | |
1323 | ||
3c2d774c GS |
1324 | /** |
1325 | * add_hte_node - add a cm node to the hash table | |
1326 | */ | |
1327 | static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) | |
1328 | { | |
1329 | unsigned long flags; | |
3c2d774c GS |
1330 | struct list_head *hte; |
1331 | ||
1332 | if (!cm_node || !cm_core) | |
1333 | return -EINVAL; | |
1334 | ||
6492cdf3 | 1335 | nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n", |
615eb715 | 1336 | cm_node); |
3c2d774c | 1337 | |
3c2d774c GS |
1338 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
1339 | ||
1340 | /* get a handle on the hash table element (list head for this slot) */ | |
1341 | hte = &cm_core->connected_nodes; | |
1342 | list_add_tail(&cm_node->list, hte); | |
1343 | atomic_inc(&cm_core->ht_node_cnt); | |
1344 | ||
1345 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | ||
1351 | /** | |
1352 | * mini_cm_dec_refcnt_listen | |
1353 | */ | |
1354 | static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1355 | struct nes_cm_listener *listener, int free_hanging_nodes) |
3c2d774c | 1356 | { |
9d5ab133 FL |
1357 | int ret = -EINVAL; |
1358 | int err = 0; | |
3c2d774c | 1359 | unsigned long flags; |
6492cdf3 FL |
1360 | struct list_head *list_pos = NULL; |
1361 | struct list_head *list_temp = NULL; | |
1362 | struct nes_cm_node *cm_node = NULL; | |
879e5bd5 | 1363 | struct list_head reset_list; |
6492cdf3 FL |
1364 | |
1365 | nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, " | |
615eb715 TN |
1366 | "refcnt=%d\n", listener, free_hanging_nodes, |
1367 | atomic_read(&listener->ref_count)); | |
6492cdf3 | 1368 | /* free non-accelerated child nodes for this listener */ |
879e5bd5 | 1369 | INIT_LIST_HEAD(&reset_list); |
6492cdf3 FL |
1370 | if (free_hanging_nodes) { |
1371 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
1372 | list_for_each_safe(list_pos, list_temp, | |
879e5bd5 | 1373 | &g_cm_core->connected_nodes) { |
6492cdf3 | 1374 | cm_node = container_of(list_pos, struct nes_cm_node, |
615eb715 | 1375 | list); |
6492cdf3 | 1376 | if ((cm_node->listener == listener) && |
879e5bd5 FL |
1377 | (!cm_node->accelerated)) { |
1378 | add_ref_cm_node(cm_node); | |
1379 | list_add(&cm_node->reset_entry, &reset_list); | |
6492cdf3 FL |
1380 | } |
1381 | } | |
1382 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1383 | } | |
879e5bd5 FL |
1384 | |
1385 | list_for_each_safe(list_pos, list_temp, &reset_list) { | |
1386 | cm_node = container_of(list_pos, struct nes_cm_node, | |
615eb715 | 1387 | reset_entry); |
9d5ab133 FL |
1388 | { |
1389 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
c5a7d489 | 1390 | enum nes_cm_node_state old_state; |
9d5ab133 FL |
1391 | if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) { |
1392 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1393 | } else { | |
1394 | if (!loopback) { | |
1395 | cleanup_retrans_entry(cm_node); | |
1396 | err = send_reset(cm_node, NULL); | |
1397 | if (err) { | |
1398 | cm_node->state = | |
615eb715 | 1399 | NES_CM_STATE_CLOSED; |
9d5ab133 FL |
1400 | WARN_ON(1); |
1401 | } else { | |
c5a7d489 FL |
1402 | old_state = cm_node->state; |
1403 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; | |
1404 | if (old_state != NES_CM_STATE_MPAREQ_RCVD) | |
1405 | rem_ref_cm_node( | |
1406 | cm_node->cm_core, | |
1407 | cm_node); | |
9d5ab133 FL |
1408 | } |
1409 | } else { | |
1410 | struct nes_cm_event event; | |
1411 | ||
1412 | event.cm_node = loopback; | |
1413 | event.cm_info.rem_addr = | |
1414 | loopback->rem_addr; | |
1415 | event.cm_info.loc_addr = | |
1416 | loopback->loc_addr; | |
1417 | event.cm_info.rem_port = | |
1418 | loopback->rem_port; | |
1419 | event.cm_info.loc_port = | |
1420 | loopback->loc_port; | |
1421 | event.cm_info.cm_id = loopback->cm_id; | |
43093b94 FL |
1422 | add_ref_cm_node(loopback); |
1423 | loopback->state = NES_CM_STATE_CLOSED; | |
9d5ab133 | 1424 | cm_event_connect_error(&event); |
c5a7d489 | 1425 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; |
9d5ab133 | 1426 | |
9d5ab133 FL |
1427 | rem_ref_cm_node(cm_node->cm_core, |
1428 | cm_node); | |
1429 | ||
1430 | } | |
1431 | } | |
1432 | } | |
879e5bd5 FL |
1433 | } |
1434 | ||
3c2d774c GS |
1435 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
1436 | if (!atomic_dec_return(&listener->ref_count)) { | |
1437 | list_del(&listener->list); | |
1438 | ||
1439 | /* decrement our listen node count */ | |
1440 | atomic_dec(&cm_core->listen_node_cnt); | |
1441 | ||
1442 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1443 | ||
5647263c TN |
1444 | if (listener->nesvnic) { |
1445 | nes_manage_apbvt(listener->nesvnic, | |
1446 | listener->mapped_loc_port, | |
1447 | PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn), | |
1448 | NES_MANAGE_APBVT_DEL); | |
1449 | ||
1450 | nes_remove_mapinfo(listener->loc_addr, | |
1451 | listener->loc_port, | |
1452 | listener->mapped_loc_addr, | |
1453 | listener->mapped_loc_port); | |
1454 | nes_debug(NES_DBG_NLMSG, | |
1455 | "Delete APBVT mapped_loc_port = %04X\n", | |
1456 | listener->mapped_loc_port); | |
1457 | } | |
3c2d774c GS |
1458 | |
1459 | nes_debug(NES_DBG_CM, "destroying listener (%p)\n", listener); | |
1460 | ||
1461 | kfree(listener); | |
a2e9c384 | 1462 | listener = NULL; |
3c2d774c | 1463 | ret = 0; |
6e10d2e4 | 1464 | atomic_inc(&cm_listens_destroyed); |
3c2d774c GS |
1465 | } else { |
1466 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1467 | } | |
1468 | if (listener) { | |
1469 | if (atomic_read(&listener->pend_accepts_cnt) > 0) | |
1470 | nes_debug(NES_DBG_CM, "destroying listener (%p)" | |
615eb715 TN |
1471 | " with non-zero pending accepts=%u\n", |
1472 | listener, atomic_read(&listener->pend_accepts_cnt)); | |
3c2d774c GS |
1473 | } |
1474 | ||
1475 | return ret; | |
1476 | } | |
1477 | ||
1478 | ||
1479 | /** | |
1480 | * mini_cm_del_listen | |
1481 | */ | |
1482 | static int mini_cm_del_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1483 | struct nes_cm_listener *listener) |
3c2d774c GS |
1484 | { |
1485 | listener->listener_state = NES_CM_LISTENER_PASSIVE_STATE; | |
1486 | listener->cm_id = NULL; /* going to be destroyed pretty soon */ | |
1487 | return mini_cm_dec_refcnt_listen(cm_core, listener, 1); | |
1488 | } | |
1489 | ||
1490 | ||
1491 | /** | |
1492 | * mini_cm_accelerated | |
1493 | */ | |
1494 | static inline int mini_cm_accelerated(struct nes_cm_core *cm_core, | |
615eb715 | 1495 | struct nes_cm_node *cm_node) |
3c2d774c | 1496 | { |
3c2d774c GS |
1497 | cm_node->accelerated = 1; |
1498 | ||
1499 | if (cm_node->accept_pend) { | |
1500 | BUG_ON(!cm_node->listener); | |
1501 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
9d5ab133 | 1502 | cm_node->accept_pend = 0; |
3c2d774c GS |
1503 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); |
1504 | } | |
1505 | ||
00ad255d TN |
1506 | if (!timer_pending(&cm_core->tcp_timer)) |
1507 | mod_timer(&cm_core->tcp_timer, (jiffies + NES_SHORT_TIME)); | |
3c2d774c GS |
1508 | |
1509 | return 0; | |
1510 | } | |
1511 | ||
1512 | ||
1513 | /** | |
7191a0a1 | 1514 | * nes_addr_resolve_neigh |
3c2d774c | 1515 | */ |
7a576dfd | 1516 | static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpindex) |
3c2d774c GS |
1517 | { |
1518 | struct rtable *rt; | |
7191a0a1 | 1519 | struct neighbour *neigh; |
7a576dfd | 1520 | int rc = arpindex; |
2a4c97ea | 1521 | struct net_device *netdev; |
7a576dfd | 1522 | struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter; |
3c2d774c | 1523 | |
78fbfd8a | 1524 | rt = ip_route_output(&init_net, htonl(dst_ip), 0, 0, 0); |
b23dd4fe | 1525 | if (IS_ERR(rt)) { |
9d5ab133 | 1526 | printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n", |
615eb715 | 1527 | __func__, dst_ip); |
7191a0a1 | 1528 | return rc; |
3c2d774c GS |
1529 | } |
1530 | ||
cf55bb24 | 1531 | if (netif_is_bond_slave(nesvnic->netdev)) |
7f6e7101 | 1532 | netdev = netdev_master_upper_dev_get(nesvnic->netdev); |
2a4c97ea MS |
1533 | else |
1534 | netdev = nesvnic->netdev; | |
1535 | ||
ef3d0c4a | 1536 | neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev); |
e55684fa | 1537 | |
40e2bb58 | 1538 | rcu_read_lock(); |
7191a0a1 BS |
1539 | if (neigh) { |
1540 | if (neigh->nud_state & NUD_VALID) { | |
1541 | nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X" | |
e174961c JB |
1542 | " is %pM, Gateway is 0x%08X \n", dst_ip, |
1543 | neigh->ha, ntohl(rt->rt_gateway)); | |
7a576dfd FL |
1544 | |
1545 | if (arpindex >= 0) { | |
79adc532 | 1546 | if (ether_addr_equal(nesadapter->arp_table[arpindex].mac_addr, neigh->ha)) { |
7a576dfd | 1547 | /* Mac address same as in nes_arp_table */ |
e55684fa | 1548 | goto out; |
7a576dfd FL |
1549 | } |
1550 | ||
1551 | nes_manage_arp_cache(nesvnic->netdev, | |
615eb715 TN |
1552 | nesadapter->arp_table[arpindex].mac_addr, |
1553 | dst_ip, NES_ARP_DELETE); | |
7a576dfd FL |
1554 | } |
1555 | ||
7191a0a1 BS |
1556 | nes_manage_arp_cache(nesvnic->netdev, neigh->ha, |
1557 | dst_ip, NES_ARP_ADD); | |
1558 | rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL, | |
1559 | NES_ARP_RESOLVE); | |
40e2bb58 DM |
1560 | } else { |
1561 | neigh_event_send(neigh, NULL); | |
7191a0a1 | 1562 | } |
580da35a | 1563 | } |
e55684fa | 1564 | out: |
40e2bb58 | 1565 | rcu_read_unlock(); |
e55684fa DM |
1566 | |
1567 | if (neigh) | |
1568 | neigh_release(neigh); | |
1569 | ||
3c2d774c | 1570 | ip_rt_put(rt); |
7191a0a1 | 1571 | return rc; |
3c2d774c GS |
1572 | } |
1573 | ||
3c2d774c GS |
1574 | /** |
1575 | * make_cm_node - create a new instance of a cm node | |
1576 | */ | |
1577 | static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, | |
615eb715 TN |
1578 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info, |
1579 | struct nes_cm_listener *listener) | |
3c2d774c GS |
1580 | { |
1581 | struct nes_cm_node *cm_node; | |
1582 | struct timespec ts; | |
7a576dfd | 1583 | int oldarpindex = 0; |
3c2d774c GS |
1584 | int arpindex = 0; |
1585 | struct nes_device *nesdev; | |
1586 | struct nes_adapter *nesadapter; | |
1587 | ||
1588 | /* create an hte and cm_node for this instance */ | |
1589 | cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC); | |
1590 | if (!cm_node) | |
1591 | return NULL; | |
1592 | ||
1593 | /* set our node specific transport info */ | |
230da36a TN |
1594 | if (listener) { |
1595 | cm_node->loc_addr = listener->loc_addr; | |
1596 | cm_node->loc_port = listener->loc_port; | |
1597 | } else { | |
1598 | cm_node->loc_addr = cm_info->loc_addr; | |
1599 | cm_node->loc_port = cm_info->loc_port; | |
1600 | } | |
3c2d774c | 1601 | cm_node->rem_addr = cm_info->rem_addr; |
3c2d774c | 1602 | cm_node->rem_port = cm_info->rem_port; |
615eb715 | 1603 | |
5647263c TN |
1604 | cm_node->mapped_loc_addr = cm_info->mapped_loc_addr; |
1605 | cm_node->mapped_rem_addr = cm_info->mapped_rem_addr; | |
1606 | cm_node->mapped_loc_port = cm_info->mapped_loc_port; | |
1607 | cm_node->mapped_rem_port = cm_info->mapped_rem_port; | |
1608 | ||
615eb715 TN |
1609 | cm_node->mpa_frame_rev = mpa_version; |
1610 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; | |
4ac79a70 TN |
1611 | cm_node->mpav2_ird_ord = 0; |
1612 | cm_node->ird_size = 0; | |
1613 | cm_node->ord_size = 0; | |
615eb715 | 1614 | |
63779436 HH |
1615 | nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n", |
1616 | &cm_node->loc_addr, cm_node->loc_port, | |
1617 | &cm_node->rem_addr, cm_node->rem_port); | |
3c2d774c GS |
1618 | cm_node->listener = listener; |
1619 | cm_node->netdev = nesvnic->netdev; | |
1620 | cm_node->cm_id = cm_info->cm_id; | |
1621 | memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN); | |
1622 | ||
6492cdf3 | 1623 | nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener, |
615eb715 | 1624 | cm_node->cm_id); |
3c2d774c | 1625 | |
3c2d774c | 1626 | spin_lock_init(&cm_node->retrans_list_lock); |
3c2d774c GS |
1627 | |
1628 | cm_node->loopbackpartner = NULL; | |
1629 | atomic_set(&cm_node->ref_count, 1); | |
1630 | /* associate our parent CM core */ | |
1631 | cm_node->cm_core = cm_core; | |
1632 | cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID; | |
1633 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
1634 | cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >> | |
615eb715 | 1635 | NES_CM_DEFAULT_RCV_WND_SCALE; |
3c2d774c GS |
1636 | ts = current_kernel_time(); |
1637 | cm_node->tcp_cntxt.loc_seq_num = htonl(ts.tv_nsec); | |
1638 | cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) - | |
615eb715 | 1639 | sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN; |
3c2d774c GS |
1640 | cm_node->tcp_cntxt.rcv_nxt = 0; |
1641 | /* get a unique session ID , add thread_id to an upcounter to handle race */ | |
1642 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c GS |
1643 | cm_node->conn_type = cm_info->conn_type; |
1644 | cm_node->apbvt_set = 0; | |
1645 | cm_node->accept_pend = 0; | |
1646 | ||
1647 | cm_node->nesvnic = nesvnic; | |
1648 | /* get some device handles, for arp lookup */ | |
1649 | nesdev = nesvnic->nesdev; | |
1650 | nesadapter = nesdev->nesadapter; | |
1651 | ||
1652 | cm_node->loopbackpartner = NULL; | |
7a576dfd | 1653 | |
3c2d774c | 1654 | /* get the mac addr for the remote node */ |
5647263c TN |
1655 | oldarpindex = nes_arp_table(nesdev, cm_node->mapped_rem_addr, |
1656 | NULL, NES_ARP_RESOLVE); | |
1657 | arpindex = nes_addr_resolve_neigh(nesvnic, | |
1658 | cm_node->mapped_rem_addr, oldarpindex); | |
3c2d774c | 1659 | if (arpindex < 0) { |
7a576dfd FL |
1660 | kfree(cm_node); |
1661 | return NULL; | |
3c2d774c GS |
1662 | } |
1663 | ||
1664 | /* copy the mac addr to node context */ | |
1665 | memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN); | |
e174961c JB |
1666 | nes_debug(NES_DBG_CM, "Remote mac addr from arp table: %pM\n", |
1667 | cm_node->rem_mac); | |
3c2d774c GS |
1668 | |
1669 | add_hte_node(cm_core, cm_node); | |
1670 | atomic_inc(&cm_nodes_created); | |
1671 | ||
1672 | return cm_node; | |
1673 | } | |
1674 | ||
1675 | ||
1676 | /** | |
1677 | * add_ref_cm_node - destroy an instance of a cm node | |
1678 | */ | |
1679 | static int add_ref_cm_node(struct nes_cm_node *cm_node) | |
1680 | { | |
1681 | atomic_inc(&cm_node->ref_count); | |
1682 | return 0; | |
1683 | } | |
1684 | ||
1685 | ||
1686 | /** | |
1687 | * rem_ref_cm_node - destroy an instance of a cm node | |
1688 | */ | |
1689 | static int rem_ref_cm_node(struct nes_cm_core *cm_core, | |
615eb715 | 1690 | struct nes_cm_node *cm_node) |
3c2d774c | 1691 | { |
9d5ab133 | 1692 | unsigned long flags; |
3c2d774c GS |
1693 | struct nes_qp *nesqp; |
1694 | ||
1695 | if (!cm_node) | |
1696 | return -EINVAL; | |
1697 | ||
1698 | spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags); | |
1699 | if (atomic_dec_return(&cm_node->ref_count)) { | |
1700 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1701 | return 0; | |
1702 | } | |
1703 | list_del(&cm_node->list); | |
1704 | atomic_dec(&cm_core->ht_node_cnt); | |
1705 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1706 | ||
1707 | /* if the node is destroyed before connection was accelerated */ | |
1708 | if (!cm_node->accelerated && cm_node->accept_pend) { | |
1709 | BUG_ON(!cm_node->listener); | |
1710 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
1711 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); | |
1712 | } | |
9d5ab133 FL |
1713 | WARN_ON(cm_node->send_entry); |
1714 | if (cm_node->recv_entry) | |
1715 | handle_recv_entry(cm_node, 0); | |
3c2d774c GS |
1716 | if (cm_node->listener) { |
1717 | mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0); | |
1718 | } else { | |
1719 | if (cm_node->apbvt_set && cm_node->nesvnic) { | |
5647263c TN |
1720 | nes_manage_apbvt(cm_node->nesvnic, cm_node->mapped_loc_port, |
1721 | PCI_FUNC(cm_node->nesvnic->nesdev->pcidev->devfn), | |
615eb715 | 1722 | NES_MANAGE_APBVT_DEL); |
3c2d774c | 1723 | } |
5647263c TN |
1724 | nes_debug(NES_DBG_NLMSG, "Delete APBVT mapped_loc_port = %04X\n", |
1725 | cm_node->mapped_loc_port); | |
1726 | nes_remove_mapinfo(cm_node->loc_addr, cm_node->loc_port, | |
1727 | cm_node->mapped_loc_addr, cm_node->mapped_loc_port); | |
3c2d774c GS |
1728 | } |
1729 | ||
3c2d774c GS |
1730 | atomic_dec(&cm_core->node_cnt); |
1731 | atomic_inc(&cm_nodes_destroyed); | |
6492cdf3 FL |
1732 | nesqp = cm_node->nesqp; |
1733 | if (nesqp) { | |
1734 | nesqp->cm_node = NULL; | |
1735 | nes_rem_ref(&nesqp->ibqp); | |
1736 | cm_node->nesqp = NULL; | |
1737 | } | |
3c2d774c | 1738 | |
6492cdf3 | 1739 | kfree(cm_node); |
3c2d774c GS |
1740 | return 0; |
1741 | } | |
1742 | ||
3c2d774c GS |
1743 | /** |
1744 | * process_options | |
1745 | */ | |
6492cdf3 | 1746 | static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, |
615eb715 | 1747 | u32 optionsize, u32 syn_packet) |
3c2d774c GS |
1748 | { |
1749 | u32 tmp; | |
1750 | u32 offset = 0; | |
1751 | union all_known_options *all_options; | |
1752 | char got_mss_option = 0; | |
1753 | ||
1754 | while (offset < optionsize) { | |
1755 | all_options = (union all_known_options *)(optionsloc + offset); | |
1756 | switch (all_options->as_base.optionnum) { | |
6492cdf3 FL |
1757 | case OPTION_NUMBER_END: |
1758 | offset = optionsize; | |
1759 | break; | |
1760 | case OPTION_NUMBER_NONE: | |
1761 | offset += 1; | |
1762 | continue; | |
1763 | case OPTION_NUMBER_MSS: | |
1764 | nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d " | |
615eb715 TN |
1765 | "Size: %d\n", __func__, |
1766 | all_options->as_mss.length, offset, optionsize); | |
6492cdf3 FL |
1767 | got_mss_option = 1; |
1768 | if (all_options->as_mss.length != 4) { | |
1769 | return 1; | |
1770 | } else { | |
1771 | tmp = ntohs(all_options->as_mss.mss); | |
1772 | if (tmp > 0 && tmp < | |
615eb715 | 1773 | cm_node->tcp_cntxt.mss) |
6492cdf3 FL |
1774 | cm_node->tcp_cntxt.mss = tmp; |
1775 | } | |
1776 | break; | |
1777 | case OPTION_NUMBER_WINDOW_SCALE: | |
1778 | cm_node->tcp_cntxt.snd_wscale = | |
1779 | all_options->as_windowscale.shiftcount; | |
1780 | break; | |
6492cdf3 FL |
1781 | default: |
1782 | nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n", | |
615eb715 | 1783 | all_options->as_base.optionnum); |
6492cdf3 | 1784 | break; |
3c2d774c GS |
1785 | } |
1786 | offset += all_options->as_base.length; | |
1787 | } | |
1788 | if ((!got_mss_option) && (syn_packet)) | |
1789 | cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS; | |
1790 | return 0; | |
1791 | } | |
1792 | ||
6492cdf3 FL |
1793 | static void drop_packet(struct sk_buff *skb) |
1794 | { | |
1795 | atomic_inc(&cm_accel_dropped_pkts); | |
1796 | dev_kfree_skb_any(skb); | |
1797 | } | |
3c2d774c | 1798 | |
9d5ab133 | 1799 | static void handle_fin_pkt(struct nes_cm_node *cm_node) |
3c2d774c | 1800 | { |
6492cdf3 | 1801 | nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. " |
615eb715 TN |
1802 | "refcnt=%d\n", cm_node, cm_node->state, |
1803 | atomic_read(&cm_node->ref_count)); | |
6492cdf3 FL |
1804 | switch (cm_node->state) { |
1805 | case NES_CM_STATE_SYN_RCVD: | |
1806 | case NES_CM_STATE_SYN_SENT: | |
1807 | case NES_CM_STATE_ESTABLISHED: | |
9d5ab133 | 1808 | case NES_CM_STATE_MPAREJ_RCVD: |
109d67e4 FL |
1809 | cm_node->tcp_cntxt.rcv_nxt++; |
1810 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1811 | cm_node->state = NES_CM_STATE_LAST_ACK; |
9d5ab133 | 1812 | send_fin(cm_node, NULL); |
6492cdf3 | 1813 | break; |
b1190d3e FL |
1814 | case NES_CM_STATE_MPAREQ_SENT: |
1815 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
1816 | cm_node->tcp_cntxt.rcv_nxt++; | |
1817 | cleanup_retrans_entry(cm_node); | |
1818 | cm_node->state = NES_CM_STATE_CLOSED; | |
1819 | add_ref_cm_node(cm_node); | |
1820 | send_reset(cm_node, NULL); | |
1821 | break; | |
6492cdf3 | 1822 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1823 | cm_node->tcp_cntxt.rcv_nxt++; |
1824 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1825 | cm_node->state = NES_CM_STATE_CLOSING; |
9d5ab133 | 1826 | send_ack(cm_node, NULL); |
25985edc | 1827 | /* Wait for ACK as this is simultaneous close.. |
9d5ab133 FL |
1828 | * After we receive ACK, do not send anything.. |
1829 | * Just rm the node.. Done.. */ | |
6492cdf3 FL |
1830 | break; |
1831 | case NES_CM_STATE_FIN_WAIT2: | |
109d67e4 FL |
1832 | cm_node->tcp_cntxt.rcv_nxt++; |
1833 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1834 | cm_node->state = NES_CM_STATE_TIME_WAIT; |
9d5ab133 FL |
1835 | send_ack(cm_node, NULL); |
1836 | schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0); | |
1837 | break; | |
1838 | case NES_CM_STATE_TIME_WAIT: | |
109d67e4 FL |
1839 | cm_node->tcp_cntxt.rcv_nxt++; |
1840 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1841 | cm_node->state = NES_CM_STATE_CLOSED; |
9d5ab133 | 1842 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
6492cdf3 FL |
1843 | break; |
1844 | case NES_CM_STATE_TSA: | |
1845 | default: | |
1846 | nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n", | |
1847 | cm_node, cm_node->state); | |
6492cdf3 | 1848 | break; |
3c2d774c | 1849 | } |
6492cdf3 | 1850 | } |
3c2d774c | 1851 | |
3c2d774c | 1852 | |
6492cdf3 FL |
1853 | static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
1854 | struct tcphdr *tcph) | |
1855 | { | |
3c2d774c | 1856 | |
6492cdf3 FL |
1857 | int reset = 0; /* whether to send reset in case of err.. */ |
1858 | atomic_inc(&cm_resets_recvd); | |
1859 | nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." | |
1860 | " refcnt=%d\n", cm_node, cm_node->state, | |
1861 | atomic_read(&cm_node->ref_count)); | |
1862 | cleanup_retrans_entry(cm_node); | |
1863 | switch (cm_node->state) { | |
1864 | case NES_CM_STATE_SYN_SENT: | |
1865 | case NES_CM_STATE_MPAREQ_SENT: | |
1866 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
1867 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, | |
1868 | cm_node->listener, cm_node->state); | |
615eb715 TN |
1869 | switch (cm_node->mpa_frame_rev) { |
1870 | case IETF_MPA_V2: | |
1871 | cm_node->mpa_frame_rev = IETF_MPA_V1; | |
1872 | /* send a syn and goto syn sent state */ | |
1873 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
1874 | if (send_syn(cm_node, 0, NULL)) { | |
1875 | active_open_err(cm_node, skb, reset); | |
1876 | } | |
1877 | break; | |
1878 | case IETF_MPA_V1: | |
1879 | default: | |
1880 | active_open_err(cm_node, skb, reset); | |
1881 | break; | |
1882 | } | |
6492cdf3 | 1883 | break; |
183ecfa3 | 1884 | case NES_CM_STATE_MPAREQ_RCVD: |
4d8d6389 | 1885 | atomic_inc(&cm_node->passive_state); |
183ecfa3 FL |
1886 | dev_kfree_skb_any(skb); |
1887 | break; | |
6492cdf3 FL |
1888 | case NES_CM_STATE_ESTABLISHED: |
1889 | case NES_CM_STATE_SYN_RCVD: | |
1890 | case NES_CM_STATE_LISTENING: | |
1891 | nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__); | |
1892 | passive_open_err(cm_node, skb, reset); | |
1893 | break; | |
1894 | case NES_CM_STATE_TSA: | |
183ecfa3 FL |
1895 | active_open_err(cm_node, skb, reset); |
1896 | break; | |
1897 | case NES_CM_STATE_CLOSED: | |
183ecfa3 FL |
1898 | drop_packet(skb); |
1899 | break; | |
dae58728 | 1900 | case NES_CM_STATE_FIN_WAIT2: |
68237a0f | 1901 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1902 | case NES_CM_STATE_LAST_ACK: |
1903 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 | 1904 | case NES_CM_STATE_TIME_WAIT: |
9d5ab133 FL |
1905 | cm_node->state = NES_CM_STATE_CLOSED; |
1906 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1907 | drop_packet(skb); | |
1908 | break; | |
6492cdf3 | 1909 | default: |
183ecfa3 | 1910 | drop_packet(skb); |
6492cdf3 FL |
1911 | break; |
1912 | } | |
1913 | } | |
3c2d774c | 1914 | |
9d5ab133 FL |
1915 | |
1916 | static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
6492cdf3 | 1917 | { |
615eb715 | 1918 | int ret = 0; |
6492cdf3 FL |
1919 | int datasize = skb->len; |
1920 | u8 *dataloc = skb->data; | |
9d5ab133 FL |
1921 | |
1922 | enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN; | |
615eb715 TN |
1923 | u32 res_type; |
1924 | ||
9d5ab133 FL |
1925 | ret = parse_mpa(cm_node, dataloc, &res_type, datasize); |
1926 | if (ret) { | |
6492cdf3 | 1927 | nes_debug(NES_DBG_CM, "didn't like MPA Request\n"); |
9d5ab133 | 1928 | if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) { |
6492cdf3 | 1929 | nes_debug(NES_DBG_CM, "%s[%u] create abort for " |
615eb715 TN |
1930 | "cm_node=%p listener=%p state=%d\n", __func__, |
1931 | __LINE__, cm_node, cm_node->listener, | |
1932 | cm_node->state); | |
6492cdf3 FL |
1933 | active_open_err(cm_node, skb, 1); |
1934 | } else { | |
1935 | passive_open_err(cm_node, skb, 1); | |
3c2d774c | 1936 | } |
9d5ab133 FL |
1937 | return; |
1938 | } | |
1939 | ||
1940 | switch (cm_node->state) { | |
1941 | case NES_CM_STATE_ESTABLISHED: | |
615eb715 | 1942 | if (res_type == NES_MPA_REQUEST_REJECT) |
9d5ab133 | 1943 | /*BIG problem as we are receiving the MPA.. So should |
615eb715 TN |
1944 | * not be REJECT.. This is Passive Open.. We can |
1945 | * only receive it Reject for Active Open...*/ | |
9d5ab133 | 1946 | WARN_ON(1); |
9d5ab133 FL |
1947 | cm_node->state = NES_CM_STATE_MPAREQ_RCVD; |
1948 | type = NES_CM_EVENT_MPA_REQ; | |
1949 | atomic_set(&cm_node->passive_state, | |
615eb715 | 1950 | NES_PASSIVE_STATE_INDICATED); |
9d5ab133 FL |
1951 | break; |
1952 | case NES_CM_STATE_MPAREQ_SENT: | |
109d67e4 | 1953 | cleanup_retrans_entry(cm_node); |
9d5ab133 FL |
1954 | if (res_type == NES_MPA_REQUEST_REJECT) { |
1955 | type = NES_CM_EVENT_MPA_REJECT; | |
1956 | cm_node->state = NES_CM_STATE_MPAREJ_RCVD; | |
1957 | } else { | |
1958 | type = NES_CM_EVENT_CONNECTED; | |
6492cdf3 | 1959 | cm_node->state = NES_CM_STATE_TSA; |
9d5ab133 | 1960 | } |
6492cdf3 | 1961 | |
9d5ab133 FL |
1962 | break; |
1963 | default: | |
1964 | WARN_ON(1); | |
1965 | break; | |
6492cdf3 | 1966 | } |
9d5ab133 FL |
1967 | dev_kfree_skb_any(skb); |
1968 | create_event(cm_node, type); | |
6492cdf3 FL |
1969 | } |
1970 | ||
1971 | static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
1972 | { | |
1973 | switch (cm_node->state) { | |
1974 | case NES_CM_STATE_SYN_SENT: | |
1975 | case NES_CM_STATE_MPAREQ_SENT: | |
1976 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1977 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1978 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1979 | active_open_err(cm_node, skb, 1); |
1980 | break; | |
1981 | case NES_CM_STATE_ESTABLISHED: | |
1982 | case NES_CM_STATE_SYN_RCVD: | |
1983 | passive_open_err(cm_node, skb, 1); | |
1984 | break; | |
1985 | case NES_CM_STATE_TSA: | |
1986 | default: | |
1987 | drop_packet(skb); | |
3c2d774c | 1988 | } |
6492cdf3 FL |
1989 | } |
1990 | ||
1991 | static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1992 | struct sk_buff *skb) |
6492cdf3 FL |
1993 | { |
1994 | int err; | |
1995 | ||
615eb715 | 1996 | err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num)) ? 0 : 1; |
6492cdf3 FL |
1997 | if (err) |
1998 | active_open_err(cm_node, skb, 1); | |
1999 | ||
2000 | return err; | |
2001 | } | |
2002 | ||
2003 | static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 2004 | struct sk_buff *skb) |
6492cdf3 FL |
2005 | { |
2006 | int err = 0; | |
2007 | u32 seq; | |
2008 | u32 ack_seq; | |
2009 | u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num; | |
2010 | u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; | |
2011 | u32 rcv_wnd; | |
615eb715 | 2012 | |
6492cdf3 FL |
2013 | seq = ntohl(tcph->seq); |
2014 | ack_seq = ntohl(tcph->ack_seq); | |
2015 | rcv_wnd = cm_node->tcp_cntxt.rcv_wnd; | |
2016 | if (ack_seq != loc_seq_num) | |
2017 | err = 1; | |
615eb715 | 2018 | else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd))) |
6492cdf3 FL |
2019 | err = 1; |
2020 | if (err) { | |
2021 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
2022 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
2023 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
2024 | indicate_pkt_err(cm_node, skb); |
2025 | nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X " | |
615eb715 TN |
2026 | "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt, |
2027 | rcv_wnd); | |
6492cdf3 FL |
2028 | } |
2029 | return err; | |
2030 | } | |
2031 | ||
2032 | /* | |
2033 | * handle_syn_pkt() is for Passive node. The syn packet is received when a node | |
2034 | * is created with a listener or it may comein as rexmitted packet which in | |
2035 | * that case will be just dropped. | |
2036 | */ | |
6492cdf3 | 2037 | static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2038 | struct tcphdr *tcph) |
6492cdf3 FL |
2039 | { |
2040 | int ret; | |
2041 | u32 inc_sequence; | |
2042 | int optionsize; | |
3c2d774c GS |
2043 | |
2044 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 2045 | skb_trim(skb, 0); |
6492cdf3 | 2046 | inc_sequence = ntohl(tcph->seq); |
3c2d774c | 2047 | |
6492cdf3 FL |
2048 | switch (cm_node->state) { |
2049 | case NES_CM_STATE_SYN_SENT: | |
2050 | case NES_CM_STATE_MPAREQ_SENT: | |
2051 | /* Rcvd syn on active open connection*/ | |
2052 | active_open_err(cm_node, skb, 1); | |
2053 | break; | |
2054 | case NES_CM_STATE_LISTENING: | |
2055 | /* Passive OPEN */ | |
6492cdf3 | 2056 | if (atomic_read(&cm_node->listener->pend_accepts_cnt) > |
615eb715 | 2057 | cm_node->listener->backlog) { |
6492cdf3 | 2058 | nes_debug(NES_DBG_CM, "drop syn due to backlog " |
615eb715 | 2059 | "pressure \n"); |
6492cdf3 FL |
2060 | cm_backlog_drops++; |
2061 | passive_open_err(cm_node, skb, 0); | |
2062 | break; | |
2063 | } | |
2064 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, | |
615eb715 | 2065 | 1); |
6492cdf3 FL |
2066 | if (ret) { |
2067 | passive_open_err(cm_node, skb, 0); | |
2068 | /* drop pkt */ | |
2069 | break; | |
2070 | } | |
2071 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
2072 | BUG_ON(cm_node->send_entry); | |
9d5ab133 FL |
2073 | cm_node->accept_pend = 1; |
2074 | atomic_inc(&cm_node->listener->pend_accepts_cnt); | |
2075 | ||
6492cdf3 FL |
2076 | cm_node->state = NES_CM_STATE_SYN_RCVD; |
2077 | send_syn(cm_node, 1, skb); | |
2078 | break; | |
abb77256 FL |
2079 | case NES_CM_STATE_CLOSED: |
2080 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2081 | add_ref_cm_node(cm_node); |
abb77256 FL |
2082 | send_reset(cm_node, skb); |
2083 | break; | |
6492cdf3 FL |
2084 | case NES_CM_STATE_TSA: |
2085 | case NES_CM_STATE_ESTABLISHED: | |
2086 | case NES_CM_STATE_FIN_WAIT1: | |
2087 | case NES_CM_STATE_FIN_WAIT2: | |
2088 | case NES_CM_STATE_MPAREQ_RCVD: | |
2089 | case NES_CM_STATE_LAST_ACK: | |
2090 | case NES_CM_STATE_CLOSING: | |
2091 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
2092 | default: |
2093 | drop_packet(skb); | |
2094 | break; | |
2095 | } | |
2096 | } | |
2097 | ||
2098 | static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 2099 | struct tcphdr *tcph) |
6492cdf3 | 2100 | { |
6492cdf3 FL |
2101 | int ret; |
2102 | u32 inc_sequence; | |
2103 | int optionsize; | |
2104 | ||
2105 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 2106 | skb_trim(skb, 0); |
6492cdf3 FL |
2107 | inc_sequence = ntohl(tcph->seq); |
2108 | switch (cm_node->state) { | |
2109 | case NES_CM_STATE_SYN_SENT: | |
9d5ab133 | 2110 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2111 | /* active open */ |
2112 | if (check_syn(cm_node, tcph, skb)) | |
2113 | return; | |
2114 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
2115 | /* setup options */ | |
2116 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0); | |
2117 | if (ret) { | |
2118 | nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n", | |
615eb715 | 2119 | cm_node); |
6492cdf3 FL |
2120 | break; |
2121 | } | |
2122 | cleanup_retrans_entry(cm_node); | |
2123 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
2124 | send_mpa_request(cm_node, skb); | |
2125 | cm_node->state = NES_CM_STATE_MPAREQ_SENT; | |
2126 | break; | |
2127 | case NES_CM_STATE_MPAREQ_RCVD: | |
2128 | /* passive open, so should not be here */ | |
2129 | passive_open_err(cm_node, skb, 1); | |
2130 | break; | |
abb77256 | 2131 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
2132 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
2133 | cleanup_retrans_entry(cm_node); | |
2134 | cm_node->state = NES_CM_STATE_CLOSED; | |
2135 | send_reset(cm_node, skb); | |
2136 | break; | |
abb77256 FL |
2137 | case NES_CM_STATE_CLOSED: |
2138 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); | |
2139 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2140 | add_ref_cm_node(cm_node); |
abb77256 FL |
2141 | send_reset(cm_node, skb); |
2142 | break; | |
6492cdf3 FL |
2143 | case NES_CM_STATE_ESTABLISHED: |
2144 | case NES_CM_STATE_FIN_WAIT1: | |
2145 | case NES_CM_STATE_FIN_WAIT2: | |
2146 | case NES_CM_STATE_LAST_ACK: | |
2147 | case NES_CM_STATE_TSA: | |
2148 | case NES_CM_STATE_CLOSING: | |
2149 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
2150 | case NES_CM_STATE_MPAREQ_SENT: |
2151 | default: | |
2152 | drop_packet(skb); | |
2153 | break; | |
2154 | } | |
2155 | } | |
3c2d774c | 2156 | |
109d67e4 | 2157 | static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2158 | struct tcphdr *tcph) |
6492cdf3 FL |
2159 | { |
2160 | int datasize = 0; | |
2161 | u32 inc_sequence; | |
109d67e4 | 2162 | int ret = 0; |
abb77256 | 2163 | int optionsize; |
615eb715 | 2164 | |
abb77256 | 2165 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
abb77256 | 2166 | |
6492cdf3 | 2167 | if (check_seq(cm_node, tcph, skb)) |
109d67e4 | 2168 | return -EINVAL; |
6492cdf3 FL |
2169 | |
2170 | skb_pull(skb, tcph->doff << 2); | |
3c2d774c | 2171 | inc_sequence = ntohl(tcph->seq); |
6492cdf3 | 2172 | datasize = skb->len; |
6492cdf3 FL |
2173 | switch (cm_node->state) { |
2174 | case NES_CM_STATE_SYN_RCVD: | |
2175 | /* Passive OPEN */ | |
109d67e4 | 2176 | cleanup_retrans_entry(cm_node); |
abb77256 FL |
2177 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1); |
2178 | if (ret) | |
2179 | break; | |
6492cdf3 FL |
2180 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
2181 | cm_node->state = NES_CM_STATE_ESTABLISHED; | |
2182 | if (datasize) { | |
2183 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
230da36a | 2184 | nes_get_remote_addr(cm_node); |
9d5ab133 | 2185 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2186 | } else { /* rcvd ACK only */ |
6492cdf3 | 2187 | dev_kfree_skb_any(skb); |
615eb715 | 2188 | } |
6492cdf3 FL |
2189 | break; |
2190 | case NES_CM_STATE_ESTABLISHED: | |
2191 | /* Passive OPEN */ | |
9d5ab133 | 2192 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2193 | if (datasize) { |
2194 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 2195 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2196 | } else { |
6492cdf3 | 2197 | drop_packet(skb); |
615eb715 | 2198 | } |
6492cdf3 FL |
2199 | break; |
2200 | case NES_CM_STATE_MPAREQ_SENT: | |
2201 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
2202 | if (datasize) { | |
2203 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 2204 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2205 | } else { /* Could be just an ack pkt.. */ |
6492cdf3 | 2206 | dev_kfree_skb_any(skb); |
615eb715 | 2207 | } |
6492cdf3 | 2208 | break; |
abb77256 | 2209 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
2210 | cleanup_retrans_entry(cm_node); |
2211 | cm_node->state = NES_CM_STATE_CLOSED; | |
2212 | send_reset(cm_node, skb); | |
2213 | break; | |
abb77256 FL |
2214 | case NES_CM_STATE_CLOSED: |
2215 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2216 | add_ref_cm_node(cm_node); |
abb77256 FL |
2217 | send_reset(cm_node, skb); |
2218 | break; | |
9d5ab133 | 2219 | case NES_CM_STATE_LAST_ACK: |
109d67e4 | 2220 | case NES_CM_STATE_CLOSING: |
9d5ab133 FL |
2221 | cleanup_retrans_entry(cm_node); |
2222 | cm_node->state = NES_CM_STATE_CLOSED; | |
2223 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 FL |
2224 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2225 | drop_packet(skb); | |
2226 | break; | |
6492cdf3 | 2227 | case NES_CM_STATE_FIN_WAIT1: |
9d5ab133 FL |
2228 | cleanup_retrans_entry(cm_node); |
2229 | drop_packet(skb); | |
2230 | cm_node->state = NES_CM_STATE_FIN_WAIT2; | |
2231 | break; | |
6492cdf3 FL |
2232 | case NES_CM_STATE_SYN_SENT: |
2233 | case NES_CM_STATE_FIN_WAIT2: | |
2234 | case NES_CM_STATE_TSA: | |
6492cdf3 | 2235 | case NES_CM_STATE_MPAREQ_RCVD: |
6492cdf3 FL |
2236 | case NES_CM_STATE_UNKNOWN: |
2237 | default: | |
109d67e4 | 2238 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2239 | drop_packet(skb); |
2240 | break; | |
3c2d774c | 2241 | } |
109d67e4 | 2242 | return ret; |
6492cdf3 | 2243 | } |
3c2d774c | 2244 | |
3c2d774c GS |
2245 | |
2246 | ||
6492cdf3 | 2247 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, |
615eb715 | 2248 | struct sk_buff *skb, int optionsize, int passive) |
6492cdf3 FL |
2249 | { |
2250 | u8 *optionsloc = (u8 *)&tcph[1]; | |
615eb715 | 2251 | |
3c2d774c | 2252 | if (optionsize) { |
6492cdf3 | 2253 | if (process_options(cm_node, optionsloc, optionsize, |
615eb715 | 2254 | (u32)tcph->syn)) { |
6492cdf3 | 2255 | nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n", |
615eb715 | 2256 | __func__, cm_node); |
6492cdf3 | 2257 | if (passive) |
abb77256 | 2258 | passive_open_err(cm_node, skb, 1); |
6492cdf3 | 2259 | else |
abb77256 | 2260 | active_open_err(cm_node, skb, 1); |
6492cdf3 | 2261 | return 1; |
3c2d774c | 2262 | } |
6492cdf3 | 2263 | } |
3c2d774c GS |
2264 | |
2265 | cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) << | |
615eb715 | 2266 | cm_node->tcp_cntxt.snd_wscale; |
3c2d774c | 2267 | |
6492cdf3 | 2268 | if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd) |
3c2d774c | 2269 | cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd; |
6492cdf3 FL |
2270 | return 0; |
2271 | } | |
3c2d774c | 2272 | |
6492cdf3 FL |
2273 | /* |
2274 | * active_open_err() will send reset() if flag set.. | |
2275 | * It will also send ABORT event. | |
2276 | */ | |
6492cdf3 | 2277 | static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2278 | int reset) |
6492cdf3 FL |
2279 | { |
2280 | cleanup_retrans_entry(cm_node); | |
2281 | if (reset) { | |
2282 | nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, " | |
615eb715 | 2283 | "state=%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2284 | add_ref_cm_node(cm_node); |
2285 | send_reset(cm_node, skb); | |
615eb715 | 2286 | } else { |
6492cdf3 | 2287 | dev_kfree_skb_any(skb); |
615eb715 | 2288 | } |
3c2d774c | 2289 | |
6492cdf3 FL |
2290 | cm_node->state = NES_CM_STATE_CLOSED; |
2291 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2292 | } | |
3c2d774c | 2293 | |
6492cdf3 FL |
2294 | /* |
2295 | * passive_open_err() will either do a reset() or will free up the skb and | |
2296 | * remove the cm_node. | |
2297 | */ | |
6492cdf3 | 2298 | static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2299 | int reset) |
6492cdf3 FL |
2300 | { |
2301 | cleanup_retrans_entry(cm_node); | |
2302 | cm_node->state = NES_CM_STATE_CLOSED; | |
2303 | if (reset) { | |
2304 | nes_debug(NES_DBG_CM, "passive_open_err sending RST for " | |
615eb715 | 2305 | "cm_node=%p state =%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2306 | send_reset(cm_node, skb); |
2307 | } else { | |
2308 | dev_kfree_skb_any(skb); | |
2309 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2310 | } |
6492cdf3 | 2311 | } |
3c2d774c | 2312 | |
6492cdf3 FL |
2313 | /* |
2314 | * free_retrans_entry() routines assumes that the retrans_list_lock has | |
2315 | * been acquired before calling. | |
2316 | */ | |
2317 | static void free_retrans_entry(struct nes_cm_node *cm_node) | |
2318 | { | |
2319 | struct nes_timer_entry *send_entry; | |
615eb715 | 2320 | |
6492cdf3 FL |
2321 | send_entry = cm_node->send_entry; |
2322 | if (send_entry) { | |
2323 | cm_node->send_entry = NULL; | |
2324 | dev_kfree_skb_any(send_entry->skb); | |
2325 | kfree(send_entry); | |
2326 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2327 | } |
6492cdf3 | 2328 | } |
3c2d774c | 2329 | |
6492cdf3 FL |
2330 | static void cleanup_retrans_entry(struct nes_cm_node *cm_node) |
2331 | { | |
2332 | unsigned long flags; | |
3c2d774c | 2333 | |
6492cdf3 FL |
2334 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
2335 | free_retrans_entry(cm_node); | |
2336 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
3c2d774c GS |
2337 | } |
2338 | ||
6492cdf3 FL |
2339 | /** |
2340 | * process_packet | |
2341 | * Returns skb if to be freed, else it will return NULL if already used.. | |
2342 | */ | |
2343 | static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 2344 | struct nes_cm_core *cm_core) |
6492cdf3 | 2345 | { |
615eb715 | 2346 | enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN; |
6492cdf3 | 2347 | struct tcphdr *tcph = tcp_hdr(skb); |
615eb715 | 2348 | u32 fin_set = 0; |
109d67e4 | 2349 | int ret = 0; |
615eb715 | 2350 | |
6492cdf3 FL |
2351 | skb_pull(skb, ip_hdr(skb)->ihl << 2); |
2352 | ||
2353 | nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d " | |
615eb715 TN |
2354 | "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn, |
2355 | tcph->ack, tcph->rst, tcph->fin); | |
6492cdf3 | 2356 | |
615eb715 | 2357 | if (tcph->rst) { |
6492cdf3 | 2358 | pkt_type = NES_PKT_TYPE_RST; |
615eb715 | 2359 | } else if (tcph->syn) { |
6492cdf3 FL |
2360 | pkt_type = NES_PKT_TYPE_SYN; |
2361 | if (tcph->ack) | |
2362 | pkt_type = NES_PKT_TYPE_SYNACK; | |
615eb715 | 2363 | } else if (tcph->ack) { |
6492cdf3 | 2364 | pkt_type = NES_PKT_TYPE_ACK; |
615eb715 | 2365 | } |
9d5ab133 FL |
2366 | if (tcph->fin) |
2367 | fin_set = 1; | |
6492cdf3 FL |
2368 | |
2369 | switch (pkt_type) { | |
2370 | case NES_PKT_TYPE_SYN: | |
2371 | handle_syn_pkt(cm_node, skb, tcph); | |
2372 | break; | |
2373 | case NES_PKT_TYPE_SYNACK: | |
2374 | handle_synack_pkt(cm_node, skb, tcph); | |
2375 | break; | |
2376 | case NES_PKT_TYPE_ACK: | |
109d67e4 FL |
2377 | ret = handle_ack_pkt(cm_node, skb, tcph); |
2378 | if (fin_set && !ret) | |
9d5ab133 | 2379 | handle_fin_pkt(cm_node); |
6492cdf3 FL |
2380 | break; |
2381 | case NES_PKT_TYPE_RST: | |
2382 | handle_rst_pkt(cm_node, skb, tcph); | |
2383 | break; | |
6492cdf3 | 2384 | default: |
109d67e4 | 2385 | if ((fin_set) && (!check_seq(cm_node, tcph, skb))) |
9d5ab133 | 2386 | handle_fin_pkt(cm_node); |
109d67e4 | 2387 | drop_packet(skb); |
6492cdf3 FL |
2388 | break; |
2389 | } | |
2390 | } | |
3c2d774c GS |
2391 | |
2392 | /** | |
2393 | * mini_cm_listen - create a listen node with params | |
2394 | */ | |
2395 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, | |
5647263c | 2396 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info) |
3c2d774c GS |
2397 | { |
2398 | struct nes_cm_listener *listener; | |
5647263c TN |
2399 | struct iwpm_dev_data pm_reg_msg; |
2400 | struct iwpm_sa_data pm_msg; | |
3c2d774c | 2401 | unsigned long flags; |
5647263c | 2402 | int iwpm_err = 0; |
3c2d774c GS |
2403 | |
2404 | nes_debug(NES_DBG_CM, "Search for 0x%08x : 0x%04x\n", | |
615eb715 | 2405 | cm_info->loc_addr, cm_info->loc_port); |
3c2d774c GS |
2406 | |
2407 | /* cannot have multiple matching listeners */ | |
5647263c TN |
2408 | listener = find_listener(cm_core, cm_info->loc_addr, cm_info->loc_port, |
2409 | NES_CM_LISTENER_EITHER_STATE, 1); | |
2410 | ||
3c2d774c GS |
2411 | if (listener && listener->listener_state == NES_CM_LISTENER_ACTIVE_STATE) { |
2412 | /* find automatically incs ref count ??? */ | |
2413 | atomic_dec(&listener->ref_count); | |
2414 | nes_debug(NES_DBG_CM, "Not creating listener since it already exists\n"); | |
2415 | return NULL; | |
2416 | } | |
2417 | ||
2418 | if (!listener) { | |
5647263c TN |
2419 | nes_form_reg_msg(nesvnic, &pm_reg_msg); |
2420 | iwpm_err = iwpm_register_pid(&pm_reg_msg, RDMA_NL_NES); | |
2421 | if (iwpm_err) { | |
2422 | nes_debug(NES_DBG_NLMSG, | |
2423 | "Port Mapper reg pid fail (err = %d).\n", iwpm_err); | |
2424 | } | |
2425 | if (iwpm_valid_pid() && !iwpm_err) { | |
2426 | nes_form_pm_msg(cm_info, &pm_msg); | |
2427 | iwpm_err = iwpm_add_mapping(&pm_msg, RDMA_NL_NES); | |
2428 | if (iwpm_err) | |
2429 | nes_debug(NES_DBG_NLMSG, | |
2430 | "Port Mapper query fail (err = %d).\n", iwpm_err); | |
2431 | else | |
2432 | nes_record_pm_msg(cm_info, &pm_msg); | |
2433 | } | |
2434 | ||
3c2d774c GS |
2435 | /* create a CM listen node (1/2 node to compare incoming traffic to) */ |
2436 | listener = kzalloc(sizeof(*listener), GFP_ATOMIC); | |
2437 | if (!listener) { | |
2438 | nes_debug(NES_DBG_CM, "Not creating listener memory allocation failed\n"); | |
2439 | return NULL; | |
2440 | } | |
2441 | ||
5647263c TN |
2442 | listener->loc_addr = cm_info->loc_addr; |
2443 | listener->loc_port = cm_info->loc_port; | |
2444 | listener->mapped_loc_addr = cm_info->mapped_loc_addr; | |
2445 | listener->mapped_loc_port = cm_info->mapped_loc_port; | |
3c2d774c GS |
2446 | listener->reused_node = 0; |
2447 | ||
2448 | atomic_set(&listener->ref_count, 1); | |
2449 | } | |
2450 | /* pasive case */ | |
2451 | /* find already inc'ed the ref count */ | |
2452 | else { | |
2453 | listener->reused_node = 1; | |
2454 | } | |
2455 | ||
2456 | listener->cm_id = cm_info->cm_id; | |
2457 | atomic_set(&listener->pend_accepts_cnt, 0); | |
2458 | listener->cm_core = cm_core; | |
2459 | listener->nesvnic = nesvnic; | |
2460 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c | 2461 | |
3c2d774c GS |
2462 | listener->conn_type = cm_info->conn_type; |
2463 | listener->backlog = cm_info->backlog; | |
2464 | listener->listener_state = NES_CM_LISTENER_ACTIVE_STATE; | |
2465 | ||
2466 | if (!listener->reused_node) { | |
2467 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
2468 | list_add(&listener->list, &cm_core->listen_list.list); | |
2469 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
2470 | atomic_inc(&cm_core->listen_node_cnt); | |
2471 | } | |
2472 | ||
2473 | nes_debug(NES_DBG_CM, "Api - listen(): addr=0x%08X, port=0x%04x," | |
615eb715 TN |
2474 | " listener = %p, backlog = %d, cm_id = %p.\n", |
2475 | cm_info->loc_addr, cm_info->loc_port, | |
2476 | listener, listener->backlog, listener->cm_id); | |
3c2d774c GS |
2477 | |
2478 | return listener; | |
2479 | } | |
2480 | ||
2481 | ||
2482 | /** | |
2483 | * mini_cm_connect - make a connection node with params | |
2484 | */ | |
54c86a8c | 2485 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, |
615eb715 TN |
2486 | struct nes_vnic *nesvnic, u16 private_data_len, |
2487 | void *private_data, struct nes_cm_info *cm_info) | |
3c2d774c GS |
2488 | { |
2489 | int ret = 0; | |
2490 | struct nes_cm_node *cm_node; | |
2491 | struct nes_cm_listener *loopbackremotelistener; | |
2492 | struct nes_cm_node *loopbackremotenode; | |
2493 | struct nes_cm_info loopback_cm_info; | |
615eb715 | 2494 | u8 *start_buff; |
3c2d774c GS |
2495 | |
2496 | /* create a CM connection node */ | |
2497 | cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL); | |
2498 | if (!cm_node) | |
2499 | return NULL; | |
2500 | ||
7495ab68 | 2501 | /* set our node side to client (active) side */ |
3c2d774c GS |
2502 | cm_node->tcp_cntxt.client = 1; |
2503 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
2504 | ||
2505 | if (cm_info->loc_addr == cm_info->rem_addr) { | |
6492cdf3 | 2506 | loopbackremotelistener = find_listener(cm_core, |
5647263c TN |
2507 | cm_node->mapped_loc_addr, cm_node->mapped_rem_port, |
2508 | NES_CM_LISTENER_ACTIVE_STATE, 0); | |
3c2d774c GS |
2509 | if (loopbackremotelistener == NULL) { |
2510 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2511 | } else { | |
3c2d774c GS |
2512 | loopback_cm_info = *cm_info; |
2513 | loopback_cm_info.loc_port = cm_info->rem_port; | |
2514 | loopback_cm_info.rem_port = cm_info->loc_port; | |
5647263c TN |
2515 | loopback_cm_info.mapped_loc_port = |
2516 | cm_info->mapped_rem_port; | |
2517 | loopback_cm_info.mapped_rem_port = | |
2518 | cm_info->mapped_loc_port; | |
3c2d774c | 2519 | loopback_cm_info.cm_id = loopbackremotelistener->cm_id; |
6492cdf3 | 2520 | loopbackremotenode = make_cm_node(cm_core, nesvnic, |
615eb715 | 2521 | &loopback_cm_info, loopbackremotelistener); |
79fc3d74 FL |
2522 | if (!loopbackremotenode) { |
2523 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
2524 | return NULL; | |
2525 | } | |
2526 | atomic_inc(&cm_loopbacks); | |
3c2d774c | 2527 | loopbackremotenode->loopbackpartner = cm_node; |
6492cdf3 FL |
2528 | loopbackremotenode->tcp_cntxt.rcv_wscale = |
2529 | NES_CM_DEFAULT_RCV_WND_SCALE; | |
3c2d774c | 2530 | cm_node->loopbackpartner = loopbackremotenode; |
6492cdf3 | 2531 | memcpy(loopbackremotenode->mpa_frame_buf, private_data, |
615eb715 | 2532 | private_data_len); |
6492cdf3 | 2533 | loopbackremotenode->mpa_frame_size = private_data_len; |
3c2d774c | 2534 | |
6492cdf3 FL |
2535 | /* we are done handling this state. */ |
2536 | /* set node to a TSA state */ | |
3c2d774c | 2537 | cm_node->state = NES_CM_STATE_TSA; |
6492cdf3 FL |
2538 | cm_node->tcp_cntxt.rcv_nxt = |
2539 | loopbackremotenode->tcp_cntxt.loc_seq_num; | |
2540 | loopbackremotenode->tcp_cntxt.rcv_nxt = | |
2541 | cm_node->tcp_cntxt.loc_seq_num; | |
2542 | cm_node->tcp_cntxt.max_snd_wnd = | |
2543 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2544 | loopbackremotenode->tcp_cntxt.max_snd_wnd = | |
2545 | cm_node->tcp_cntxt.rcv_wnd; | |
2546 | cm_node->tcp_cntxt.snd_wnd = | |
2547 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2548 | loopbackremotenode->tcp_cntxt.snd_wnd = | |
2549 | cm_node->tcp_cntxt.rcv_wnd; | |
2550 | cm_node->tcp_cntxt.snd_wscale = | |
2551 | loopbackremotenode->tcp_cntxt.rcv_wscale; | |
2552 | loopbackremotenode->tcp_cntxt.snd_wscale = | |
2553 | cm_node->tcp_cntxt.rcv_wscale; | |
9d5ab133 | 2554 | loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD; |
3c2d774c GS |
2555 | create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ); |
2556 | } | |
2557 | return cm_node; | |
2558 | } | |
2559 | ||
615eb715 TN |
2560 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
2561 | cm_node->mpa_frame_size = private_data_len; | |
6492cdf3 | 2562 | |
615eb715 | 2563 | memcpy(start_buff, private_data, private_data_len); |
3c2d774c GS |
2564 | |
2565 | /* send a syn and goto syn sent state */ | |
2566 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
6492cdf3 FL |
2567 | ret = send_syn(cm_node, 0, NULL); |
2568 | ||
2569 | if (ret) { | |
2570 | /* error in sending the syn free up the cm_node struct */ | |
2571 | nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest " | |
615eb715 TN |
2572 | "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2573 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2574 | cm_node->cm_id); | |
6492cdf3 FL |
2575 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2576 | cm_node = NULL; | |
2577 | } | |
3c2d774c | 2578 | |
615eb715 | 2579 | if (cm_node) { |
6492cdf3 | 2580 | nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X," |
615eb715 TN |
2581 | "port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2582 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2583 | cm_node->cm_id); | |
2584 | } | |
3c2d774c GS |
2585 | |
2586 | return cm_node; | |
2587 | } | |
2588 | ||
2589 | ||
2590 | /** | |
2591 | * mini_cm_accept - accept a connection | |
2592 | * This function is never called | |
2593 | */ | |
615eb715 | 2594 | static int mini_cm_accept(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2595 | { |
2596 | return 0; | |
2597 | } | |
2598 | ||
2599 | ||
2600 | /** | |
2601 | * mini_cm_reject - reject and teardown a connection | |
2602 | */ | |
615eb715 | 2603 | static int mini_cm_reject(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2604 | { |
2605 | int ret = 0; | |
9d5ab133 | 2606 | int err = 0; |
183ecfa3 | 2607 | int passive_state; |
9d5ab133 FL |
2608 | struct nes_cm_event event; |
2609 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
2610 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
3c2d774c | 2611 | |
6492cdf3 | 2612 | nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n", |
615eb715 | 2613 | __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state); |
3c2d774c | 2614 | |
6492cdf3 FL |
2615 | if (cm_node->tcp_cntxt.client) |
2616 | return ret; | |
2617 | cleanup_retrans_entry(cm_node); | |
3c2d774c | 2618 | |
9d5ab133 FL |
2619 | if (!loopback) { |
2620 | passive_state = atomic_add_return(1, &cm_node->passive_state); | |
2621 | if (passive_state == NES_SEND_RESET_EVENT) { | |
2622 | cm_node->state = NES_CM_STATE_CLOSED; | |
2623 | rem_ref_cm_node(cm_core, cm_node); | |
2624 | } else { | |
c5a7d489 FL |
2625 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2626 | rem_ref_cm_node(cm_core, cm_node); | |
2627 | } else { | |
2628 | ret = send_mpa_reject(cm_node); | |
2629 | if (ret) { | |
2630 | cm_node->state = NES_CM_STATE_CLOSED; | |
2631 | err = send_reset(cm_node, NULL); | |
2632 | if (err) | |
2633 | WARN_ON(1); | |
615eb715 | 2634 | } else { |
c5a7d489 | 2635 | cm_id->add_ref(cm_id); |
615eb715 | 2636 | } |
c5a7d489 | 2637 | } |
9d5ab133 FL |
2638 | } |
2639 | } else { | |
2640 | cm_node->cm_id = NULL; | |
c5a7d489 FL |
2641 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2642 | rem_ref_cm_node(cm_core, cm_node); | |
2643 | rem_ref_cm_node(cm_core, loopback); | |
2644 | } else { | |
2645 | event.cm_node = loopback; | |
2646 | event.cm_info.rem_addr = loopback->rem_addr; | |
2647 | event.cm_info.loc_addr = loopback->loc_addr; | |
2648 | event.cm_info.rem_port = loopback->rem_port; | |
2649 | event.cm_info.loc_port = loopback->loc_port; | |
2650 | event.cm_info.cm_id = loopback->cm_id; | |
2651 | cm_event_mpa_reject(&event); | |
2652 | rem_ref_cm_node(cm_core, cm_node); | |
2653 | loopback->state = NES_CM_STATE_CLOSING; | |
9d5ab133 | 2654 | |
c5a7d489 FL |
2655 | cm_id = loopback->cm_id; |
2656 | rem_ref_cm_node(cm_core, loopback); | |
2657 | cm_id->rem_ref(cm_id); | |
2658 | } | |
9d5ab133 FL |
2659 | } |
2660 | ||
3c2d774c GS |
2661 | return ret; |
2662 | } | |
2663 | ||
2664 | ||
2665 | /** | |
2666 | * mini_cm_close | |
2667 | */ | |
1a855fbf | 2668 | static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2669 | { |
2670 | int ret = 0; | |
2671 | ||
2672 | if (!cm_core || !cm_node) | |
2673 | return -EINVAL; | |
2674 | ||
2675 | switch (cm_node->state) { | |
6492cdf3 FL |
2676 | case NES_CM_STATE_SYN_RCVD: |
2677 | case NES_CM_STATE_SYN_SENT: | |
2678 | case NES_CM_STATE_ONE_SIDE_ESTABLISHED: | |
2679 | case NES_CM_STATE_ESTABLISHED: | |
2680 | case NES_CM_STATE_ACCEPTING: | |
2681 | case NES_CM_STATE_MPAREQ_SENT: | |
2682 | case NES_CM_STATE_MPAREQ_RCVD: | |
2683 | cleanup_retrans_entry(cm_node); | |
2684 | send_reset(cm_node, NULL); | |
2685 | break; | |
2686 | case NES_CM_STATE_CLOSE_WAIT: | |
2687 | cm_node->state = NES_CM_STATE_LAST_ACK; | |
2688 | send_fin(cm_node, NULL); | |
2689 | break; | |
2690 | case NES_CM_STATE_FIN_WAIT1: | |
2691 | case NES_CM_STATE_FIN_WAIT2: | |
2692 | case NES_CM_STATE_LAST_ACK: | |
2693 | case NES_CM_STATE_TIME_WAIT: | |
2694 | case NES_CM_STATE_CLOSING: | |
2695 | ret = -1; | |
2696 | break; | |
2697 | case NES_CM_STATE_LISTENING: | |
886f98a3 FL |
2698 | cleanup_retrans_entry(cm_node); |
2699 | send_reset(cm_node, NULL); | |
2700 | break; | |
2701 | case NES_CM_STATE_MPAREJ_RCVD: | |
6492cdf3 FL |
2702 | case NES_CM_STATE_UNKNOWN: |
2703 | case NES_CM_STATE_INITED: | |
2704 | case NES_CM_STATE_CLOSED: | |
c5a7d489 | 2705 | case NES_CM_STATE_LISTENER_DESTROYED: |
6492cdf3 FL |
2706 | ret = rem_ref_cm_node(cm_core, cm_node); |
2707 | break; | |
2708 | case NES_CM_STATE_TSA: | |
2709 | if (cm_node->send_entry) | |
2710 | printk(KERN_ERR "ERROR Close got called from STATE_TSA " | |
615eb715 | 2711 | "send_entry=%p\n", cm_node->send_entry); |
6492cdf3 FL |
2712 | ret = rem_ref_cm_node(cm_core, cm_node); |
2713 | break; | |
3c2d774c | 2714 | } |
3c2d774c GS |
2715 | return ret; |
2716 | } | |
2717 | ||
2718 | ||
2719 | /** | |
2720 | * recv_pkt - recv an ETHERNET packet, and process it through CM | |
2721 | * node state machine | |
2722 | */ | |
4a14f6a7 | 2723 | static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, |
615eb715 | 2724 | struct nes_vnic *nesvnic, struct sk_buff *skb) |
3c2d774c GS |
2725 | { |
2726 | struct nes_cm_node *cm_node = NULL; | |
2727 | struct nes_cm_listener *listener = NULL; | |
2728 | struct iphdr *iph; | |
2729 | struct tcphdr *tcph; | |
2730 | struct nes_cm_info nfo; | |
4a14f6a7 | 2731 | int skb_handled = 1; |
03080e5c | 2732 | __be32 tmp_daddr, tmp_saddr; |
3c2d774c | 2733 | |
6492cdf3 | 2734 | if (!skb) |
4a14f6a7 | 2735 | return 0; |
615eb715 | 2736 | if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) |
4a14f6a7 | 2737 | return 0; |
3c2d774c GS |
2738 | |
2739 | iph = (struct iphdr *)skb->data; | |
2740 | tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr)); | |
3c2d774c GS |
2741 | |
2742 | nfo.loc_addr = ntohl(iph->daddr); | |
2743 | nfo.loc_port = ntohs(tcph->dest); | |
2744 | nfo.rem_addr = ntohl(iph->saddr); | |
2745 | nfo.rem_port = ntohs(tcph->source); | |
2746 | ||
5647263c TN |
2747 | /* If port mapper is available these should be mapped address info */ |
2748 | nfo.mapped_loc_addr = ntohl(iph->daddr); | |
2749 | nfo.mapped_loc_port = ntohs(tcph->dest); | |
2750 | nfo.mapped_rem_addr = ntohl(iph->saddr); | |
2751 | nfo.mapped_rem_port = ntohs(tcph->source); | |
2752 | ||
03080e5c HH |
2753 | tmp_daddr = cpu_to_be32(iph->daddr); |
2754 | tmp_saddr = cpu_to_be32(iph->saddr); | |
2755 | ||
63779436 | 2756 | nes_debug(NES_DBG_CM, "Received packet: dest=%pI4:0x%04X src=%pI4:0x%04X\n", |
03080e5c | 2757 | &tmp_daddr, tcph->dest, &tmp_saddr, tcph->source); |
3c2d774c | 2758 | |
6492cdf3 FL |
2759 | do { |
2760 | cm_node = find_node(cm_core, | |
5647263c TN |
2761 | nfo.mapped_rem_port, nfo.mapped_rem_addr, |
2762 | nfo.mapped_loc_port, nfo.mapped_loc_addr); | |
3c2d774c | 2763 | |
3c2d774c | 2764 | if (!cm_node) { |
6492cdf3 FL |
2765 | /* Only type of packet accepted are for */ |
2766 | /* the PASSIVE open (syn only) */ | |
2767 | if ((!tcph->syn) || (tcph->ack)) { | |
4a14f6a7 | 2768 | skb_handled = 0; |
6492cdf3 FL |
2769 | break; |
2770 | } | |
5647263c TN |
2771 | listener = find_listener(cm_core, nfo.mapped_loc_addr, |
2772 | nfo.mapped_loc_port, | |
2773 | NES_CM_LISTENER_ACTIVE_STATE, 0); | |
4a14f6a7 FL |
2774 | if (!listener) { |
2775 | nfo.cm_id = NULL; | |
2776 | nfo.conn_type = 0; | |
2777 | nes_debug(NES_DBG_CM, "Unable to find listener for the pkt\n"); | |
2778 | skb_handled = 0; | |
6492cdf3 FL |
2779 | break; |
2780 | } | |
4a14f6a7 FL |
2781 | nfo.cm_id = listener->cm_id; |
2782 | nfo.conn_type = listener->conn_type; | |
6492cdf3 | 2783 | cm_node = make_cm_node(cm_core, nesvnic, &nfo, |
615eb715 | 2784 | listener); |
6492cdf3 FL |
2785 | if (!cm_node) { |
2786 | nes_debug(NES_DBG_CM, "Unable to allocate " | |
615eb715 | 2787 | "node\n"); |
6492cdf3 | 2788 | cm_packets_dropped++; |
3c2d774c | 2789 | atomic_dec(&listener->ref_count); |
6492cdf3 FL |
2790 | dev_kfree_skb_any(skb); |
2791 | break; | |
3c2d774c | 2792 | } |
6492cdf3 FL |
2793 | if (!tcph->rst && !tcph->fin) { |
2794 | cm_node->state = NES_CM_STATE_LISTENING; | |
2795 | } else { | |
2796 | cm_packets_dropped++; | |
2797 | rem_ref_cm_node(cm_core, cm_node); | |
2798 | dev_kfree_skb_any(skb); | |
2799 | break; | |
3c2d774c | 2800 | } |
6492cdf3 FL |
2801 | add_ref_cm_node(cm_node); |
2802 | } else if (cm_node->state == NES_CM_STATE_TSA) { | |
0f0bee8b FL |
2803 | if (cm_node->nesqp->pau_mode) |
2804 | nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp); | |
2805 | else { | |
2806 | rem_ref_cm_node(cm_core, cm_node); | |
2807 | atomic_inc(&cm_accel_dropped_pkts); | |
2808 | dev_kfree_skb_any(skb); | |
2809 | } | |
6492cdf3 | 2810 | break; |
3c2d774c | 2811 | } |
4a14f6a7 FL |
2812 | skb_reset_network_header(skb); |
2813 | skb_set_transport_header(skb, sizeof(*tcph)); | |
2814 | skb->len = ntohs(iph->tot_len); | |
6492cdf3 FL |
2815 | process_packet(cm_node, skb, cm_core); |
2816 | rem_ref_cm_node(cm_core, cm_node); | |
2817 | } while (0); | |
4a14f6a7 | 2818 | return skb_handled; |
3c2d774c GS |
2819 | } |
2820 | ||
2821 | ||
2822 | /** | |
2823 | * nes_cm_alloc_core - allocate a top level instance of a cm core | |
2824 | */ | |
1a855fbf | 2825 | static struct nes_cm_core *nes_cm_alloc_core(void) |
3c2d774c | 2826 | { |
3c2d774c | 2827 | struct nes_cm_core *cm_core; |
3c2d774c GS |
2828 | |
2829 | /* setup the CM core */ | |
2830 | /* alloc top level core control structure */ | |
2831 | cm_core = kzalloc(sizeof(*cm_core), GFP_KERNEL); | |
2832 | if (!cm_core) | |
2833 | return NULL; | |
2834 | ||
2835 | INIT_LIST_HEAD(&cm_core->connected_nodes); | |
2836 | init_timer(&cm_core->tcp_timer); | |
2837 | cm_core->tcp_timer.function = nes_cm_timer_tick; | |
2838 | ||
615eb715 | 2839 | cm_core->mtu = NES_CM_DEFAULT_MTU; |
3c2d774c GS |
2840 | cm_core->state = NES_CM_STATE_INITED; |
2841 | cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS; | |
2842 | ||
3c2d774c GS |
2843 | atomic_set(&cm_core->events_posted, 0); |
2844 | ||
3c2d774c GS |
2845 | cm_core->api = &nes_cm_api; |
2846 | ||
2847 | spin_lock_init(&cm_core->ht_lock); | |
2848 | spin_lock_init(&cm_core->listen_list_lock); | |
2849 | ||
2850 | INIT_LIST_HEAD(&cm_core->listen_list.list); | |
2851 | ||
2852 | nes_debug(NES_DBG_CM, "Init CM Core completed -- cm_core=%p\n", cm_core); | |
2853 | ||
2854 | nes_debug(NES_DBG_CM, "Enable QUEUE EVENTS\n"); | |
2855 | cm_core->event_wq = create_singlethread_workqueue("nesewq"); | |
2856 | cm_core->post_event = nes_cm_post_event; | |
2857 | nes_debug(NES_DBG_CM, "Enable QUEUE DISCONNECTS\n"); | |
2858 | cm_core->disconn_wq = create_singlethread_workqueue("nesdwq"); | |
2859 | ||
2860 | print_core(cm_core); | |
2861 | return cm_core; | |
2862 | } | |
2863 | ||
2864 | ||
2865 | /** | |
2866 | * mini_cm_dealloc_core - deallocate a top level instance of a cm core | |
2867 | */ | |
1a855fbf | 2868 | static int mini_cm_dealloc_core(struct nes_cm_core *cm_core) |
3c2d774c GS |
2869 | { |
2870 | nes_debug(NES_DBG_CM, "De-Alloc CM Core (%p)\n", cm_core); | |
2871 | ||
2872 | if (!cm_core) | |
2873 | return -EINVAL; | |
2874 | ||
2875 | barrier(); | |
2876 | ||
615eb715 | 2877 | if (timer_pending(&cm_core->tcp_timer)) |
3c2d774c | 2878 | del_timer(&cm_core->tcp_timer); |
3c2d774c GS |
2879 | |
2880 | destroy_workqueue(cm_core->event_wq); | |
2881 | destroy_workqueue(cm_core->disconn_wq); | |
2882 | nes_debug(NES_DBG_CM, "\n"); | |
2883 | kfree(cm_core); | |
2884 | ||
2885 | return 0; | |
2886 | } | |
2887 | ||
2888 | ||
2889 | /** | |
2890 | * mini_cm_get | |
2891 | */ | |
1a855fbf | 2892 | static int mini_cm_get(struct nes_cm_core *cm_core) |
3c2d774c GS |
2893 | { |
2894 | return cm_core->state; | |
2895 | } | |
2896 | ||
2897 | ||
2898 | /** | |
2899 | * mini_cm_set | |
2900 | */ | |
1a855fbf | 2901 | static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value) |
3c2d774c GS |
2902 | { |
2903 | int ret = 0; | |
2904 | ||
2905 | switch (type) { | |
9d5ab133 FL |
2906 | case NES_CM_SET_PKT_SIZE: |
2907 | cm_core->mtu = value; | |
2908 | break; | |
2909 | case NES_CM_SET_FREE_PKT_Q_SIZE: | |
2910 | cm_core->free_tx_pkt_max = value; | |
2911 | break; | |
2912 | default: | |
2913 | /* unknown set option */ | |
2914 | ret = -EINVAL; | |
3c2d774c GS |
2915 | } |
2916 | ||
2917 | return ret; | |
2918 | } | |
2919 | ||
2920 | ||
2921 | /** | |
2922 | * nes_cm_init_tsa_conn setup HW; MPA frames must be | |
2923 | * successfully exchanged when this is called | |
2924 | */ | |
2925 | static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_node) | |
2926 | { | |
2927 | int ret = 0; | |
2928 | ||
2929 | if (!nesqp) | |
2930 | return -EINVAL; | |
2931 | ||
2932 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_IPV4 | | |
615eb715 TN |
2933 | NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG | |
2934 | NES_QPCONTEXT_MISC_DROS); | |
3c2d774c GS |
2935 | |
2936 | if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale) | |
2937 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WSCALE); | |
2938 | ||
2939 | nesqp->nesqp_context->misc2 |= cpu_to_le32(64 << NES_QPCONTEXT_MISC2_TTL_SHIFT); | |
2940 | ||
2941 | nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16); | |
2942 | ||
2943 | nesqp->nesqp_context->tcp_state_flow_label |= cpu_to_le32( | |
615eb715 | 2944 | (u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT); |
3c2d774c GS |
2945 | |
2946 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2947 | (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) & |
2948 | NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK); | |
3c2d774c GS |
2949 | |
2950 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2951 | (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) & |
2952 | NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK); | |
3c2d774c GS |
2953 | |
2954 | nesqp->nesqp_context->keepalive = cpu_to_le32(0x80); | |
2955 | nesqp->nesqp_context->ts_recent = 0; | |
2956 | nesqp->nesqp_context->ts_age = 0; | |
2957 | nesqp->nesqp_context->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2958 | nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd); | |
2959 | nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); | |
2960 | nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd << | |
615eb715 | 2961 | cm_node->tcp_cntxt.rcv_wscale); |
3c2d774c GS |
2962 | nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
2963 | nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2964 | nesqp->nesqp_context->srtt = 0; | |
2965 | nesqp->nesqp_context->rttvar = cpu_to_le32(0x6); | |
2966 | nesqp->nesqp_context->ssthresh = cpu_to_le32(0x3FFFC000); | |
615eb715 | 2967 | nesqp->nesqp_context->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss); |
3c2d774c GS |
2968 | nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); |
2969 | nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2970 | nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd); | |
2971 | ||
2972 | nes_debug(NES_DBG_CM, "QP%u: rcv_nxt = 0x%08X, snd_nxt = 0x%08X," | |
615eb715 TN |
2973 | " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n", |
2974 | nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt), | |
2975 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
2976 | cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale), | |
2977 | le32_to_cpu(nesqp->nesqp_context->rcv_wnd), | |
2978 | le32_to_cpu(nesqp->nesqp_context->misc)); | |
3c2d774c GS |
2979 | nes_debug(NES_DBG_CM, " snd_wnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->snd_wnd)); |
2980 | nes_debug(NES_DBG_CM, " snd_cwnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->cwnd)); | |
2981 | nes_debug(NES_DBG_CM, " max_swnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->max_snd_wnd)); | |
2982 | ||
2983 | nes_debug(NES_DBG_CM, "Change cm_node state to TSA\n"); | |
2984 | cm_node->state = NES_CM_STATE_TSA; | |
2985 | ||
2986 | return ret; | |
2987 | } | |
2988 | ||
2989 | ||
2990 | /** | |
2991 | * nes_cm_disconn | |
2992 | */ | |
2993 | int nes_cm_disconn(struct nes_qp *nesqp) | |
2994 | { | |
873fcdd4 | 2995 | struct disconn_work *work; |
3c2d774c | 2996 | |
873fcdd4 DW |
2997 | work = kzalloc(sizeof *work, GFP_ATOMIC); |
2998 | if (!work) | |
615eb715 | 2999 | return -ENOMEM; /* Timer will clean up */ |
3c2d774c | 3000 | |
873fcdd4 DW |
3001 | nes_add_ref(&nesqp->ibqp); |
3002 | work->nesqp = nesqp; | |
3003 | INIT_WORK(&work->work, nes_disconnect_worker); | |
3004 | queue_work(g_cm_core->disconn_wq, &work->work); | |
3c2d774c GS |
3005 | return 0; |
3006 | } | |
3007 | ||
3008 | ||
3009 | /** | |
3010 | * nes_disconnect_worker | |
3011 | */ | |
1a855fbf | 3012 | static void nes_disconnect_worker(struct work_struct *work) |
3c2d774c | 3013 | { |
873fcdd4 DW |
3014 | struct disconn_work *dwork = container_of(work, struct disconn_work, work); |
3015 | struct nes_qp *nesqp = dwork->nesqp; | |
3c2d774c | 3016 | |
873fcdd4 | 3017 | kfree(dwork); |
3c2d774c | 3018 | nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n", |
615eb715 | 3019 | nesqp->last_aeq, nesqp->hwqp.qp_id); |
3c2d774c | 3020 | nes_cm_disconn_true(nesqp); |
c4c3f279 | 3021 | nes_rem_ref(&nesqp->ibqp); |
3c2d774c GS |
3022 | } |
3023 | ||
3024 | ||
3025 | /** | |
3026 | * nes_cm_disconn_true | |
3027 | */ | |
1a855fbf | 3028 | static int nes_cm_disconn_true(struct nes_qp *nesqp) |
3c2d774c GS |
3029 | { |
3030 | unsigned long flags; | |
3031 | int ret = 0; | |
3032 | struct iw_cm_id *cm_id; | |
3033 | struct iw_cm_event cm_event; | |
3034 | struct nes_vnic *nesvnic; | |
3035 | u16 last_ae; | |
3036 | u8 original_hw_tcp_state; | |
3037 | u8 original_ibqp_state; | |
d0c49bf3 | 3038 | int disconn_status = 0; |
b29a4fc4 DW |
3039 | int issue_disconn = 0; |
3040 | int issue_close = 0; | |
3041 | int issue_flush = 0; | |
3042 | u32 flush_q = NES_CQP_FLUSH_RQ; | |
3043 | struct ib_event ibevent; | |
3c2d774c GS |
3044 | |
3045 | if (!nesqp) { | |
3046 | nes_debug(NES_DBG_CM, "disconnect_worker nesqp is NULL\n"); | |
3047 | return -1; | |
3048 | } | |
3049 | ||
3050 | spin_lock_irqsave(&nesqp->lock, flags); | |
3051 | cm_id = nesqp->cm_id; | |
3052 | /* make sure we havent already closed this connection */ | |
3053 | if (!cm_id) { | |
3054 | nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n", | |
615eb715 | 3055 | nesqp->hwqp.qp_id); |
3c2d774c | 3056 | spin_unlock_irqrestore(&nesqp->lock, flags); |
3c2d774c GS |
3057 | return -1; |
3058 | } | |
3059 | ||
3060 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3061 | nes_debug(NES_DBG_CM, "Disconnecting QP%u\n", nesqp->hwqp.qp_id); | |
3062 | ||
3063 | original_hw_tcp_state = nesqp->hw_tcp_state; | |
615eb715 | 3064 | original_ibqp_state = nesqp->ibqp_state; |
3c2d774c GS |
3065 | last_ae = nesqp->last_aeq; |
3066 | ||
b29a4fc4 DW |
3067 | if (nesqp->term_flags) { |
3068 | issue_disconn = 1; | |
3069 | issue_close = 1; | |
3070 | nesqp->cm_id = NULL; | |
196f40c8 | 3071 | del_timer(&nesqp->terminate_timer); |
b29a4fc4 DW |
3072 | if (nesqp->flush_issued == 0) { |
3073 | nesqp->flush_issued = 1; | |
3074 | issue_flush = 1; | |
3075 | } | |
3076 | } else if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) || | |
3077 | ((original_ibqp_state == IB_QPS_RTS) && | |
3078 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
3079 | issue_disconn = 1; | |
3080 | if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) | |
d0c49bf3 | 3081 | disconn_status = -ECONNRESET; |
b29a4fc4 DW |
3082 | } |
3083 | ||
3084 | if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) || | |
3085 | (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) || | |
3086 | (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) || | |
3087 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
3088 | issue_close = 1; | |
3089 | nesqp->cm_id = NULL; | |
3090 | if (nesqp->flush_issued == 0) { | |
3091 | nesqp->flush_issued = 1; | |
3092 | issue_flush = 1; | |
3093 | } | |
3094 | } | |
3c2d774c | 3095 | |
b29a4fc4 DW |
3096 | spin_unlock_irqrestore(&nesqp->lock, flags); |
3097 | ||
3098 | if ((issue_flush) && (nesqp->destroyed == 0)) { | |
3099 | /* Flush the queue(s) */ | |
3100 | if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE) | |
3101 | flush_q |= NES_CQP_FLUSH_SQ; | |
3102 | flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1); | |
3103 | ||
3104 | if (nesqp->term_flags) { | |
3105 | ibevent.device = nesqp->ibqp.device; | |
3106 | ibevent.event = nesqp->terminate_eventtype; | |
3107 | ibevent.element.qp = &nesqp->ibqp; | |
784d135f TN |
3108 | if (nesqp->ibqp.event_handler) |
3109 | nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context); | |
b29a4fc4 DW |
3110 | } |
3111 | } | |
3c2d774c | 3112 | |
b29a4fc4 DW |
3113 | if ((cm_id) && (cm_id->event_handler)) { |
3114 | if (issue_disconn) { | |
3c2d774c GS |
3115 | atomic_inc(&cm_disconnects); |
3116 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
b29a4fc4 | 3117 | cm_event.status = disconn_status; |
3c2d774c GS |
3118 | cm_event.local_addr = cm_id->local_addr; |
3119 | cm_event.remote_addr = cm_id->remote_addr; | |
3120 | cm_event.private_data = NULL; | |
3121 | cm_event.private_data_len = 0; | |
3122 | ||
6492cdf3 | 3123 | nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event" |
615eb715 TN |
3124 | " for QP%u, SQ Head = %u, SQ Tail = %u. " |
3125 | "cm_id = %p, refcount = %u.\n", | |
3126 | nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, | |
3127 | nesqp->hwqp.sq_tail, cm_id, | |
3128 | atomic_read(&nesqp->refcount)); | |
3c2d774c | 3129 | |
3c2d774c GS |
3130 | ret = cm_id->event_handler(cm_id, &cm_event); |
3131 | if (ret) | |
6492cdf3 | 3132 | nes_debug(NES_DBG_CM, "OFA CM event_handler " |
615eb715 | 3133 | "returned, ret=%d\n", ret); |
3c2d774c GS |
3134 | } |
3135 | ||
b29a4fc4 | 3136 | if (issue_close) { |
3c2d774c | 3137 | atomic_inc(&cm_closes); |
3c2d774c GS |
3138 | nes_disconnect(nesqp, 1); |
3139 | ||
3140 | cm_id->provider_data = nesqp; | |
3141 | /* Send up the close complete event */ | |
3142 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 3143 | cm_event.status = 0; |
3c2d774c GS |
3144 | cm_event.provider_data = cm_id->provider_data; |
3145 | cm_event.local_addr = cm_id->local_addr; | |
3146 | cm_event.remote_addr = cm_id->remote_addr; | |
3147 | cm_event.private_data = NULL; | |
3148 | cm_event.private_data_len = 0; | |
3149 | ||
3150 | ret = cm_id->event_handler(cm_id, &cm_event); | |
615eb715 | 3151 | if (ret) |
3c2d774c | 3152 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3c2d774c GS |
3153 | |
3154 | cm_id->rem_ref(cm_id); | |
3c2d774c | 3155 | } |
3c2d774c | 3156 | } |
3c2d774c GS |
3157 | |
3158 | return 0; | |
3159 | } | |
3160 | ||
3161 | ||
3162 | /** | |
3163 | * nes_disconnect | |
3164 | */ | |
1a855fbf | 3165 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt) |
3c2d774c GS |
3166 | { |
3167 | int ret = 0; | |
3168 | struct nes_vnic *nesvnic; | |
3169 | struct nes_device *nesdev; | |
c12e56ef | 3170 | struct nes_ib_device *nesibdev; |
3c2d774c GS |
3171 | |
3172 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3173 | if (!nesvnic) | |
3174 | return -EINVAL; | |
3175 | ||
3176 | nesdev = nesvnic->nesdev; | |
c12e56ef | 3177 | nesibdev = nesvnic->nesibdev; |
3c2d774c GS |
3178 | |
3179 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 3180 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c GS |
3181 | |
3182 | if (nesqp->active_conn) { | |
3183 | ||
3184 | /* indicate this connection is NOT active */ | |
3185 | nesqp->active_conn = 0; | |
3186 | } else { | |
3187 | /* Need to free the Last Streaming Mode Message */ | |
3188 | if (nesqp->ietf_frame) { | |
c12e56ef FL |
3189 | if (nesqp->lsmm_mr) |
3190 | nesibdev->ibdev.dereg_mr(nesqp->lsmm_mr); | |
3c2d774c | 3191 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
3192 | nesqp->private_data_len + nesqp->ietf_frame_size, |
3193 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
3c2d774c GS |
3194 | } |
3195 | } | |
3196 | ||
3197 | /* close the CM node down if it is still active */ | |
3198 | if (nesqp->cm_node) { | |
3199 | nes_debug(NES_DBG_CM, "Call close API\n"); | |
3200 | ||
3201 | g_cm_core->api->close(g_cm_core, nesqp->cm_node); | |
3c2d774c GS |
3202 | } |
3203 | ||
3204 | return ret; | |
3205 | } | |
3206 | ||
3207 | ||
3208 | /** | |
3209 | * nes_accept | |
3210 | */ | |
3211 | int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
3212 | { | |
3213 | u64 u64temp; | |
3214 | struct ib_qp *ibqp; | |
3215 | struct nes_qp *nesqp; | |
3216 | struct nes_vnic *nesvnic; | |
3217 | struct nes_device *nesdev; | |
3218 | struct nes_cm_node *cm_node; | |
3219 | struct nes_adapter *adapter; | |
3220 | struct ib_qp_attr attr; | |
3221 | struct iw_cm_event cm_event; | |
3222 | struct nes_hw_qp_wqe *wqe; | |
3223 | struct nes_v4_quad nes_quad; | |
30da7cff | 3224 | u32 crc_value; |
3c2d774c | 3225 | int ret; |
183ecfa3 | 3226 | int passive_state; |
c12e56ef FL |
3227 | struct nes_ib_device *nesibdev; |
3228 | struct ib_mr *ibmr = NULL; | |
3229 | struct ib_phys_buf ibphysbuf; | |
3230 | struct nes_pd *nespd; | |
7a5efb62 | 3231 | u64 tagged_offset; |
615eb715 TN |
3232 | u8 mpa_frame_offset = 0; |
3233 | struct ietf_mpa_v2 *mpa_v2_frame; | |
3234 | u8 start_addr = 0; | |
3235 | u8 *start_ptr = &start_addr; | |
3236 | u8 **start_buff = &start_ptr; | |
3237 | u16 buff_len = 0; | |
24d44a39 SW |
3238 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3239 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
c12e56ef | 3240 | |
3c2d774c GS |
3241 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
3242 | if (!ibqp) | |
3243 | return -EINVAL; | |
3244 | ||
3245 | /* get all our handles */ | |
3246 | nesqp = to_nesqp(ibqp); | |
3247 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3248 | nesdev = nesvnic->nesdev; | |
3249 | adapter = nesdev->nesadapter; | |
3250 | ||
3c2d774c | 3251 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
6492cdf3 FL |
3252 | nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p," |
3253 | "%s\n", cm_node, nesvnic, nesvnic->netdev, | |
3254 | nesvnic->netdev->name); | |
3c2d774c | 3255 | |
c5a7d489 FL |
3256 | if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) { |
3257 | if (cm_node->loopbackpartner) | |
3258 | rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner); | |
3259 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3260 | return -EINVAL; | |
3261 | } | |
3262 | ||
dae58728 FL |
3263 | passive_state = atomic_add_return(1, &cm_node->passive_state); |
3264 | if (passive_state == NES_SEND_RESET_EVENT) { | |
3265 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3266 | return -ECONNRESET; | |
3267 | } | |
3c2d774c GS |
3268 | /* associate the node with the QP */ |
3269 | nesqp->cm_node = (void *)cm_node; | |
6492cdf3 | 3270 | cm_node->nesqp = nesqp; |
3c2d774c | 3271 | |
4ac79a70 | 3272 | |
6492cdf3 FL |
3273 | nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", |
3274 | nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); | |
3c2d774c GS |
3275 | atomic_inc(&cm_accepts); |
3276 | ||
3277 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 3278 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c | 3279 | |
615eb715 | 3280 | nesqp->ietf_frame_size = sizeof(struct ietf_mpa_v2); |
6492cdf3 FL |
3281 | /* allocate the ietf frame and space for private data */ |
3282 | nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev, | |
615eb715 TN |
3283 | nesqp->ietf_frame_size + conn_param->private_data_len, |
3284 | &nesqp->ietf_frame_pbase); | |
3c2d774c | 3285 | |
6492cdf3 | 3286 | if (!nesqp->ietf_frame) { |
615eb715 | 3287 | nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n"); |
6492cdf3 FL |
3288 | return -ENOMEM; |
3289 | } | |
615eb715 | 3290 | mpa_v2_frame = (struct ietf_mpa_v2 *)nesqp->ietf_frame; |
3c2d774c | 3291 | |
615eb715 TN |
3292 | if (cm_node->mpa_frame_rev == IETF_MPA_V1) |
3293 | mpa_frame_offset = 4; | |
3c2d774c | 3294 | |
4ac79a70 TN |
3295 | if (cm_node->mpa_frame_rev == IETF_MPA_V1 || |
3296 | cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) { | |
3297 | record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord); | |
3298 | } | |
3299 | ||
615eb715 TN |
3300 | memcpy(mpa_v2_frame->priv_data, conn_param->private_data, |
3301 | conn_param->private_data_len); | |
3c2d774c | 3302 | |
615eb715 TN |
3303 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, nesqp->ietf_frame, MPA_KEY_REPLY); |
3304 | nesqp->private_data_len = conn_param->private_data_len; | |
3c2d774c | 3305 | |
6492cdf3 FL |
3306 | /* setup our first outgoing iWarp send WQE (the IETF frame response) */ |
3307 | wqe = &nesqp->hwqp.sq_vbase[0]; | |
3308 | ||
24d44a39 | 3309 | if (raddr->sin_addr.s_addr != laddr->sin_addr.s_addr) { |
6492cdf3 | 3310 | u64temp = (unsigned long)nesqp; |
c12e56ef FL |
3311 | nesibdev = nesvnic->nesibdev; |
3312 | nespd = nesqp->nespd; | |
615eb715 TN |
3313 | ibphysbuf.addr = nesqp->ietf_frame_pbase + mpa_frame_offset; |
3314 | ibphysbuf.size = buff_len; | |
3315 | tagged_offset = (u64)(unsigned long)*start_buff; | |
c12e56ef | 3316 | ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd, |
615eb715 TN |
3317 | &ibphysbuf, 1, |
3318 | IB_ACCESS_LOCAL_WRITE, | |
3319 | &tagged_offset); | |
c12e56ef FL |
3320 | if (!ibmr) { |
3321 | nes_debug(NES_DBG_CM, "Unable to register memory region" | |
615eb715 TN |
3322 | "for lSMM for cm_node = %p \n", |
3323 | cm_node); | |
9256b251 | 3324 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
3325 | nesqp->private_data_len + nesqp->ietf_frame_size, |
3326 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
c12e56ef FL |
3327 | return -ENOMEM; |
3328 | } | |
3329 | ||
3330 | ibmr->pd = &nespd->ibpd; | |
3331 | ibmr->device = nespd->ibpd.device; | |
3332 | nesqp->lsmm_mr = ibmr; | |
3333 | ||
615eb715 | 3334 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
6492cdf3 | 3335 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3336 | NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, |
3337 | u64temp); | |
6492cdf3 FL |
3338 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = |
3339 | cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING | | |
615eb715 | 3340 | NES_IWARP_SQ_WQE_WRPDU); |
6492cdf3 | 3341 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = |
615eb715 | 3342 | cpu_to_le32(buff_len); |
c12e56ef | 3343 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3344 | NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, |
3345 | (u64)(unsigned long)(*start_buff)); | |
6492cdf3 | 3346 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = |
615eb715 | 3347 | cpu_to_le32(buff_len); |
c12e56ef | 3348 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey; |
d2fa9b26 FL |
3349 | if (nesqp->sq_kmapped) { |
3350 | nesqp->sq_kmapped = 0; | |
3351 | kunmap(nesqp->page); | |
3352 | } | |
6492cdf3 FL |
3353 | |
3354 | nesqp->nesqp_context->ird_ord_sizes |= | |
3355 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
615eb715 | 3356 | NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3357 | } else { |
3358 | nesqp->nesqp_context->ird_ord_sizes |= | |
9d5ab133 | 3359 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3360 | } |
3361 | nesqp->skip_lsmm = 1; | |
3c2d774c | 3362 | |
3c2d774c GS |
3363 | /* Cache the cm_id in the qp */ |
3364 | nesqp->cm_id = cm_id; | |
3365 | cm_node->cm_id = cm_id; | |
3366 | ||
3367 | /* nesqp->cm_node = (void *)cm_id->provider_data; */ | |
3368 | cm_id->provider_data = nesqp; | |
615eb715 | 3369 | nesqp->active_conn = 0; |
3c2d774c | 3370 | |
6492cdf3 FL |
3371 | if (cm_node->state == NES_CM_STATE_TSA) |
3372 | nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n", | |
615eb715 | 3373 | cm_node); |
6492cdf3 | 3374 | |
3c2d774c GS |
3375 | nes_cm_init_tsa_conn(nesqp, cm_node); |
3376 | ||
5647263c TN |
3377 | nesqp->nesqp_context->tcpPorts[0] = |
3378 | cpu_to_le16(cm_node->mapped_loc_port); | |
3379 | nesqp->nesqp_context->tcpPorts[1] = | |
3380 | cpu_to_le16(cm_node->mapped_rem_port); | |
6492cdf3 | 3381 | |
5647263c | 3382 | nesqp->nesqp_context->ip0 = cpu_to_le32(cm_node->mapped_rem_addr); |
3c2d774c GS |
3383 | |
3384 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
615eb715 TN |
3385 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3386 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3387 | |
6492cdf3 FL |
3388 | nesqp->nesqp_context->arp_index_vlan |= |
3389 | cpu_to_le32(nes_arp_table(nesdev, | |
615eb715 TN |
3390 | le32_to_cpu(nesqp->nesqp_context->ip0), NULL, |
3391 | NES_ARP_RESOLVE) << 16); | |
3c2d774c GS |
3392 | |
3393 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
6492cdf3 | 3394 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); |
3c2d774c GS |
3395 | |
3396 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3397 | ||
3398 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32( | |
6492cdf3 FL |
3399 | ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT)); |
3400 | nesqp->nesqp_context->ird_ord_sizes |= | |
4ac79a70 | 3401 | cpu_to_le32((u32)cm_node->ord_size); |
3c2d774c GS |
3402 | |
3403 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
6492cdf3 FL |
3404 | nes_quad.DstIpAdrIndex = |
3405 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
5647263c TN |
3406 | nes_quad.SrcIpadr = htonl(cm_node->mapped_rem_addr); |
3407 | nes_quad.TcpPorts[0] = htons(cm_node->mapped_rem_port); | |
3408 | nes_quad.TcpPorts[1] = htons(cm_node->mapped_loc_port); | |
3c2d774c GS |
3409 | |
3410 | /* Produce hash key */ | |
30da7cff FL |
3411 | crc_value = get_crc_value(&nes_quad); |
3412 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3413 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n", |
615eb715 | 3414 | nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask); |
3c2d774c GS |
3415 | |
3416 | nesqp->hte_index &= adapter->hte_index_mask; | |
3417 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3418 | ||
3419 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); | |
3420 | ||
6492cdf3 | 3421 | nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = " |
615eb715 TN |
3422 | "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + " |
3423 | "private data length=%u.\n", nesqp->hwqp.qp_id, | |
24d44a39 SW |
3424 | ntohl(raddr->sin_addr.s_addr), ntohs(raddr->sin_port), |
3425 | ntohl(laddr->sin_addr.s_addr), ntohs(laddr->sin_port), | |
615eb715 TN |
3426 | le32_to_cpu(nesqp->nesqp_context->rcv_nxt), |
3427 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
3428 | buff_len); | |
3c2d774c | 3429 | |
73ac36ea | 3430 | /* notify OF layer that accept event was successful */ |
3c2d774c | 3431 | cm_id->add_ref(cm_id); |
9256b251 | 3432 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3433 | |
3434 | cm_event.event = IW_CM_EVENT_ESTABLISHED; | |
d0c49bf3 | 3435 | cm_event.status = 0; |
3c2d774c GS |
3436 | cm_event.provider_data = (void *)nesqp; |
3437 | cm_event.local_addr = cm_id->local_addr; | |
3438 | cm_event.remote_addr = cm_id->remote_addr; | |
3439 | cm_event.private_data = NULL; | |
3440 | cm_event.private_data_len = 0; | |
4ac79a70 TN |
3441 | cm_event.ird = cm_node->ird_size; |
3442 | cm_event.ord = cm_node->ord_size; | |
3443 | ||
3c2d774c | 3444 | ret = cm_id->event_handler(cm_id, &cm_event); |
183ecfa3 FL |
3445 | attr.qp_state = IB_QPS_RTS; |
3446 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3447 | if (cm_node->loopbackpartner) { |
6492cdf3 FL |
3448 | cm_node->loopbackpartner->mpa_frame_size = |
3449 | nesqp->private_data_len; | |
3c2d774c | 3450 | /* copy entire MPA frame to our cm_node's frame */ |
6492cdf3 | 3451 | memcpy(cm_node->loopbackpartner->mpa_frame_buf, |
615eb715 | 3452 | conn_param->private_data, conn_param->private_data_len); |
3c2d774c GS |
3453 | create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED); |
3454 | } | |
3455 | if (ret) | |
6492cdf3 | 3456 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3457 | "ret=%d\n", __func__, __LINE__, ret); |
3c2d774c GS |
3458 | |
3459 | return 0; | |
3460 | } | |
3461 | ||
3462 | ||
3463 | /** | |
3464 | * nes_reject | |
3465 | */ | |
3466 | int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
3467 | { | |
3468 | struct nes_cm_node *cm_node; | |
9d5ab133 | 3469 | struct nes_cm_node *loopback; |
3c2d774c | 3470 | struct nes_cm_core *cm_core; |
615eb715 | 3471 | u8 *start_buff; |
3c2d774c GS |
3472 | |
3473 | atomic_inc(&cm_rejects); | |
615eb715 | 3474 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
9d5ab133 | 3475 | loopback = cm_node->loopbackpartner; |
3c2d774c | 3476 | cm_core = cm_node->cm_core; |
9d5ab133 | 3477 | cm_node->cm_id = cm_id; |
3c2d774c | 3478 | |
615eb715 | 3479 | if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER) |
9d5ab133 FL |
3480 | return -EINVAL; |
3481 | ||
9d5ab133 FL |
3482 | if (loopback) { |
3483 | memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len); | |
3484 | loopback->mpa_frame.priv_data_len = pdata_len; | |
615eb715 | 3485 | loopback->mpa_frame_size = pdata_len; |
9d5ab133 | 3486 | } else { |
615eb715 TN |
3487 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
3488 | cm_node->mpa_frame_size = pdata_len; | |
3489 | memcpy(start_buff, pdata, pdata_len); | |
9d5ab133 | 3490 | } |
615eb715 | 3491 | return cm_core->api->reject(cm_core, cm_node); |
3c2d774c GS |
3492 | } |
3493 | ||
3494 | ||
3495 | /** | |
3496 | * nes_connect | |
3497 | * setup and launch cm connect node | |
3498 | */ | |
3499 | int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
3500 | { | |
3501 | struct ib_qp *ibqp; | |
3502 | struct nes_qp *nesqp; | |
3503 | struct nes_vnic *nesvnic; | |
3504 | struct nes_device *nesdev; | |
3505 | struct nes_cm_node *cm_node; | |
3506 | struct nes_cm_info cm_info; | |
53094c38 | 3507 | int apbvt_set = 0; |
24d44a39 SW |
3508 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3509 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
5647263c TN |
3510 | struct iwpm_dev_data pm_reg_msg; |
3511 | struct iwpm_sa_data pm_msg; | |
3512 | int iwpm_err = 0; | |
3c2d774c | 3513 | |
24d44a39 SW |
3514 | if (cm_id->remote_addr.ss_family != AF_INET) |
3515 | return -ENOSYS; | |
3c2d774c GS |
3516 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
3517 | if (!ibqp) | |
3518 | return -EINVAL; | |
3519 | nesqp = to_nesqp(ibqp); | |
3520 | if (!nesqp) | |
3521 | return -EINVAL; | |
3522 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3523 | if (!nesvnic) | |
3524 | return -EINVAL; | |
615eb715 | 3525 | nesdev = nesvnic->nesdev; |
3c2d774c GS |
3526 | if (!nesdev) |
3527 | return -EINVAL; | |
3528 | ||
24d44a39 | 3529 | if (!laddr->sin_port || !raddr->sin_port) |
c5a7d489 FL |
3530 | return -EINVAL; |
3531 | ||
6492cdf3 | 3532 | nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = " |
615eb715 | 3533 | "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id, |
24d44a39 SW |
3534 | ntohl(nesvnic->local_ipaddr), ntohl(raddr->sin_addr.s_addr), |
3535 | ntohs(raddr->sin_port), ntohl(laddr->sin_addr.s_addr), | |
3536 | ntohs(laddr->sin_port)); | |
3c2d774c | 3537 | |
6492cdf3 | 3538 | atomic_inc(&cm_connects); |
3c2d774c GS |
3539 | nesqp->active_conn = 1; |
3540 | ||
3c2d774c GS |
3541 | /* cache the cm_id in the qp */ |
3542 | nesqp->cm_id = cm_id; | |
3c2d774c | 3543 | cm_id->provider_data = nesqp; |
3c2d774c | 3544 | nesqp->private_data_len = conn_param->private_data_len; |
d3e51328 | 3545 | |
3c2d774c | 3546 | nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord); |
6492cdf3 | 3547 | nes_debug(NES_DBG_CM, "mpa private data len =%u\n", |
615eb715 | 3548 | conn_param->private_data_len); |
3c2d774c | 3549 | |
5647263c TN |
3550 | /* set up the connection params for the node */ |
3551 | cm_info.loc_addr = ntohl(laddr->sin_addr.s_addr); | |
3552 | cm_info.loc_port = ntohs(laddr->sin_port); | |
3553 | cm_info.rem_addr = ntohl(raddr->sin_addr.s_addr); | |
3554 | cm_info.rem_port = ntohs(raddr->sin_port); | |
3555 | cm_info.cm_id = cm_id; | |
3556 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3557 | ||
3558 | /* No port mapper available, go with the specified peer information */ | |
3559 | cm_info.mapped_loc_addr = cm_info.loc_addr; | |
3560 | cm_info.mapped_loc_port = cm_info.loc_port; | |
3561 | cm_info.mapped_rem_addr = cm_info.rem_addr; | |
3562 | cm_info.mapped_rem_port = cm_info.rem_port; | |
3563 | ||
3564 | nes_form_reg_msg(nesvnic, &pm_reg_msg); | |
3565 | iwpm_err = iwpm_register_pid(&pm_reg_msg, RDMA_NL_NES); | |
3566 | if (iwpm_err) { | |
3567 | nes_debug(NES_DBG_NLMSG, | |
3568 | "Port Mapper reg pid fail (err = %d).\n", iwpm_err); | |
3569 | } | |
3570 | if (iwpm_valid_pid() && !iwpm_err) { | |
3571 | nes_form_pm_msg(&cm_info, &pm_msg); | |
3572 | iwpm_err = iwpm_add_and_query_mapping(&pm_msg, RDMA_NL_NES); | |
3573 | if (iwpm_err) | |
3574 | nes_debug(NES_DBG_NLMSG, | |
3575 | "Port Mapper query fail (err = %d).\n", iwpm_err); | |
3576 | else | |
3577 | nes_record_pm_msg(&cm_info, &pm_msg); | |
3578 | } | |
3579 | ||
24d44a39 | 3580 | if (laddr->sin_addr.s_addr != raddr->sin_addr.s_addr) { |
5647263c TN |
3581 | nes_manage_apbvt(nesvnic, cm_info.mapped_loc_port, |
3582 | PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD); | |
53094c38 FL |
3583 | apbvt_set = 1; |
3584 | } | |
3c2d774c | 3585 | |
5647263c TN |
3586 | if (nes_create_mapinfo(&cm_info)) |
3587 | return -ENOMEM; | |
3c2d774c GS |
3588 | |
3589 | cm_id->add_ref(cm_id); | |
3c2d774c GS |
3590 | |
3591 | /* create a connect CM node connection */ | |
6492cdf3 | 3592 | cm_node = g_cm_core->api->connect(g_cm_core, nesvnic, |
615eb715 TN |
3593 | conn_param->private_data_len, (void *)conn_param->private_data, |
3594 | &cm_info); | |
3c2d774c | 3595 | if (!cm_node) { |
53094c38 | 3596 | if (apbvt_set) |
5647263c | 3597 | nes_manage_apbvt(nesvnic, cm_info.mapped_loc_port, |
615eb715 TN |
3598 | PCI_FUNC(nesdev->pcidev->devfn), |
3599 | NES_MANAGE_APBVT_DEL); | |
6492cdf3 | 3600 | |
5647263c TN |
3601 | nes_debug(NES_DBG_NLMSG, "Delete mapped_loc_port = %04X\n", |
3602 | cm_info.mapped_loc_port); | |
3603 | nes_remove_mapinfo(cm_info.loc_addr, cm_info.loc_port, | |
3604 | cm_info.mapped_loc_addr, cm_info.mapped_loc_port); | |
3c2d774c GS |
3605 | cm_id->rem_ref(cm_id); |
3606 | return -ENOMEM; | |
3607 | } | |
3608 | ||
4ac79a70 TN |
3609 | record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord); |
3610 | if (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO && | |
3611 | cm_node->ord_size == 0) | |
3612 | cm_node->ord_size = 1; | |
3613 | ||
53094c38 | 3614 | cm_node->apbvt_set = apbvt_set; |
3c2d774c | 3615 | nesqp->cm_node = cm_node; |
6492cdf3 | 3616 | cm_node->nesqp = nesqp; |
d7ffd507 | 3617 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3618 | |
3619 | return 0; | |
3620 | } | |
3621 | ||
3622 | ||
3623 | /** | |
3624 | * nes_create_listen | |
3625 | */ | |
3626 | int nes_create_listen(struct iw_cm_id *cm_id, int backlog) | |
3627 | { | |
3628 | struct nes_vnic *nesvnic; | |
3629 | struct nes_cm_listener *cm_node; | |
3630 | struct nes_cm_info cm_info; | |
3c2d774c | 3631 | int err; |
24d44a39 | 3632 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3c2d774c | 3633 | |
3c2d774c | 3634 | nes_debug(NES_DBG_CM, "cm_id = %p, local port = 0x%04X.\n", |
24d44a39 | 3635 | cm_id, ntohs(laddr->sin_port)); |
3c2d774c | 3636 | |
24d44a39 SW |
3637 | if (cm_id->local_addr.ss_family != AF_INET) |
3638 | return -ENOSYS; | |
3c2d774c GS |
3639 | nesvnic = to_nesvnic(cm_id->device); |
3640 | if (!nesvnic) | |
3641 | return -EINVAL; | |
69d51023 | 3642 | |
3c2d774c GS |
3643 | nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n", |
3644 | nesvnic, nesvnic->netdev, nesvnic->netdev->name); | |
3645 | ||
3646 | nes_debug(NES_DBG_CM, "nesvnic->local_ipaddr=0x%08x, sin_addr.s_addr=0x%08x\n", | |
24d44a39 | 3647 | nesvnic->local_ipaddr, laddr->sin_addr.s_addr); |
3c2d774c GS |
3648 | |
3649 | /* setup listen params in our api call struct */ | |
5647263c TN |
3650 | cm_info.loc_addr = ntohl(nesvnic->local_ipaddr); |
3651 | cm_info.loc_port = ntohs(laddr->sin_port); | |
3c2d774c GS |
3652 | cm_info.backlog = backlog; |
3653 | cm_info.cm_id = cm_id; | |
3654 | ||
3655 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3656 | ||
5647263c TN |
3657 | /* No port mapper available, go with the specified info */ |
3658 | cm_info.mapped_loc_addr = cm_info.loc_addr; | |
3659 | cm_info.mapped_loc_port = cm_info.loc_port; | |
3c2d774c GS |
3660 | |
3661 | cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info); | |
3662 | if (!cm_node) { | |
6492cdf3 | 3663 | printk(KERN_ERR "%s[%u] Error returned from listen API call\n", |
615eb715 | 3664 | __func__, __LINE__); |
3c2d774c GS |
3665 | return -ENOMEM; |
3666 | } | |
3667 | ||
3668 | cm_id->provider_data = cm_node; | |
3669 | ||
3670 | if (!cm_node->reused_node) { | |
5647263c TN |
3671 | if (nes_create_mapinfo(&cm_info)) |
3672 | return -ENOMEM; | |
3673 | ||
3674 | err = nes_manage_apbvt(nesvnic, cm_node->mapped_loc_port, | |
615eb715 TN |
3675 | PCI_FUNC(nesvnic->nesdev->pcidev->devfn), |
3676 | NES_MANAGE_APBVT_ADD); | |
3c2d774c | 3677 | if (err) { |
6492cdf3 | 3678 | printk(KERN_ERR "nes_manage_apbvt call returned %d.\n", |
615eb715 | 3679 | err); |
3c2d774c GS |
3680 | g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); |
3681 | return err; | |
3682 | } | |
6e10d2e4 | 3683 | atomic_inc(&cm_listens_created); |
3c2d774c GS |
3684 | } |
3685 | ||
3686 | cm_id->add_ref(cm_id); | |
3687 | cm_id->provider_data = (void *)cm_node; | |
3688 | ||
3689 | ||
3690 | return 0; | |
3691 | } | |
3692 | ||
3693 | ||
3694 | /** | |
3695 | * nes_destroy_listen | |
3696 | */ | |
3697 | int nes_destroy_listen(struct iw_cm_id *cm_id) | |
3698 | { | |
3699 | if (cm_id->provider_data) | |
3700 | g_cm_core->api->stop_listener(g_cm_core, cm_id->provider_data); | |
3701 | else | |
3702 | nes_debug(NES_DBG_CM, "cm_id->provider_data was NULL\n"); | |
3703 | ||
3704 | cm_id->rem_ref(cm_id); | |
3705 | ||
3706 | return 0; | |
3707 | } | |
3708 | ||
3709 | ||
3710 | /** | |
3711 | * nes_cm_recv | |
3712 | */ | |
3713 | int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice) | |
3714 | { | |
4a14f6a7 | 3715 | int rc = 0; |
615eb715 | 3716 | |
3c2d774c | 3717 | cm_packets_received++; |
615eb715 | 3718 | if ((g_cm_core) && (g_cm_core->api)) |
4a14f6a7 | 3719 | rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb); |
615eb715 | 3720 | else |
3c2d774c | 3721 | nes_debug(NES_DBG_CM, "Unable to process packet for CM," |
615eb715 | 3722 | " cm is not setup properly.\n"); |
3c2d774c | 3723 | |
4a14f6a7 | 3724 | return rc; |
3c2d774c GS |
3725 | } |
3726 | ||
3727 | ||
3728 | /** | |
3729 | * nes_cm_start | |
3730 | * Start and init a cm core module | |
3731 | */ | |
3732 | int nes_cm_start(void) | |
3733 | { | |
3734 | nes_debug(NES_DBG_CM, "\n"); | |
3735 | /* create the primary CM core, pass this handle to subsequent core inits */ | |
3736 | g_cm_core = nes_cm_alloc_core(); | |
615eb715 | 3737 | if (g_cm_core) |
3c2d774c | 3738 | return 0; |
615eb715 | 3739 | else |
3c2d774c | 3740 | return -ENOMEM; |
3c2d774c GS |
3741 | } |
3742 | ||
3743 | ||
3744 | /** | |
3745 | * nes_cm_stop | |
3746 | * stop and dealloc all cm core instances | |
3747 | */ | |
3748 | int nes_cm_stop(void) | |
3749 | { | |
3750 | g_cm_core->api->destroy_cm_core(g_cm_core); | |
3751 | return 0; | |
3752 | } | |
3753 | ||
3754 | ||
3755 | /** | |
3756 | * cm_event_connected | |
3757 | * handle a connected event, setup QPs and HW | |
3758 | */ | |
1a855fbf | 3759 | static void cm_event_connected(struct nes_cm_event *event) |
3c2d774c | 3760 | { |
3c2d774c GS |
3761 | struct nes_qp *nesqp; |
3762 | struct nes_vnic *nesvnic; | |
3763 | struct nes_device *nesdev; | |
3764 | struct nes_cm_node *cm_node; | |
3765 | struct nes_adapter *nesadapter; | |
3766 | struct ib_qp_attr attr; | |
3767 | struct iw_cm_id *cm_id; | |
3768 | struct iw_cm_event cm_event; | |
3c2d774c | 3769 | struct nes_v4_quad nes_quad; |
30da7cff | 3770 | u32 crc_value; |
3c2d774c | 3771 | int ret; |
24d44a39 SW |
3772 | struct sockaddr_in *laddr; |
3773 | struct sockaddr_in *raddr; | |
3774 | struct sockaddr_in *cm_event_laddr; | |
3c2d774c GS |
3775 | |
3776 | /* get all our handles */ | |
3777 | cm_node = event->cm_node; | |
3778 | cm_id = cm_node->cm_id; | |
3779 | nes_debug(NES_DBG_CM, "cm_event_connected - %p - cm_id = %p\n", cm_node, cm_id); | |
3780 | nesqp = (struct nes_qp *)cm_id->provider_data; | |
3781 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3782 | nesdev = nesvnic->nesdev; | |
3783 | nesadapter = nesdev->nesadapter; | |
24d44a39 SW |
3784 | laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3785 | raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
3786 | cm_event_laddr = (struct sockaddr_in *)&cm_event.local_addr; | |
3c2d774c | 3787 | |
615eb715 | 3788 | if (nesqp->destroyed) |
3c2d774c | 3789 | return; |
3c2d774c GS |
3790 | atomic_inc(&cm_connecteds); |
3791 | nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" | |
615eb715 | 3792 | " local port 0x%04X. jiffies = %lu.\n", |
24d44a39 SW |
3793 | nesqp->hwqp.qp_id, ntohl(raddr->sin_addr.s_addr), |
3794 | ntohs(raddr->sin_port), ntohs(laddr->sin_port), jiffies); | |
3c2d774c GS |
3795 | |
3796 | nes_cm_init_tsa_conn(nesqp, cm_node); | |
3797 | ||
3798 | /* set the QP tsa context */ | |
5647263c TN |
3799 | nesqp->nesqp_context->tcpPorts[0] = |
3800 | cpu_to_le16(cm_node->mapped_loc_port); | |
3801 | nesqp->nesqp_context->tcpPorts[1] = | |
3802 | cpu_to_le16(cm_node->mapped_rem_port); | |
3803 | nesqp->nesqp_context->ip0 = cpu_to_le32(cm_node->mapped_rem_addr); | |
3c2d774c GS |
3804 | |
3805 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
6492cdf3 FL |
3806 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3807 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3808 | nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32( |
6492cdf3 FL |
3809 | nes_arp_table(nesdev, |
3810 | le32_to_cpu(nesqp->nesqp_context->ip0), | |
3c2d774c GS |
3811 | NULL, NES_ARP_RESOLVE) << 16); |
3812 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
3813 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); | |
3814 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3815 | nesqp->nesqp_context->ird_ord_sizes |= | |
6492cdf3 FL |
3816 | cpu_to_le32((u32)1 << |
3817 | NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT); | |
4ac79a70 TN |
3818 | nesqp->nesqp_context->ird_ord_sizes |= |
3819 | cpu_to_le32((u32)cm_node->ord_size); | |
3c2d774c GS |
3820 | |
3821 | /* Adjust tail for not having a LSMM */ | |
615eb715 | 3822 | /*nesqp->hwqp.sq_tail = 1;*/ |
3c2d774c | 3823 | |
615eb715 | 3824 | build_rdma0_msg(cm_node, &nesqp); |
6492cdf3 | 3825 | |
615eb715 TN |
3826 | nes_write32(nesdev->regs + NES_WQE_ALLOC, |
3827 | (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); | |
3c2d774c GS |
3828 | |
3829 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
3830 | ||
6492cdf3 FL |
3831 | nes_quad.DstIpAdrIndex = |
3832 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
5647263c TN |
3833 | nes_quad.SrcIpadr = htonl(cm_node->mapped_rem_addr); |
3834 | nes_quad.TcpPorts[0] = htons(cm_node->mapped_rem_port); | |
3835 | nes_quad.TcpPorts[1] = htons(cm_node->mapped_loc_port); | |
3c2d774c GS |
3836 | |
3837 | /* Produce hash key */ | |
30da7cff FL |
3838 | crc_value = get_crc_value(&nes_quad); |
3839 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3840 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, After CRC = 0x%08X\n", |
615eb715 | 3841 | nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask); |
3c2d774c GS |
3842 | |
3843 | nesqp->hte_index &= nesadapter->hte_index_mask; | |
3844 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3845 | ||
3846 | nesqp->ietf_frame = &cm_node->mpa_frame; | |
615eb715 | 3847 | nesqp->private_data_len = (u8)cm_node->mpa_frame_size; |
3c2d774c GS |
3848 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); |
3849 | ||
3c2d774c GS |
3850 | /* notify OF layer we successfully created the requested connection */ |
3851 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
d0c49bf3 | 3852 | cm_event.status = 0; |
3c2d774c | 3853 | cm_event.provider_data = cm_id->provider_data; |
24d44a39 SW |
3854 | cm_event_laddr->sin_family = AF_INET; |
3855 | cm_event_laddr->sin_port = laddr->sin_port; | |
3c2d774c GS |
3856 | cm_event.remote_addr = cm_id->remote_addr; |
3857 | ||
6492cdf3 | 3858 | cm_event.private_data = (void *)event->cm_node->mpa_frame_buf; |
615eb715 TN |
3859 | cm_event.private_data_len = (u8)event->cm_node->mpa_frame_size; |
3860 | cm_event.ird = cm_node->ird_size; | |
3861 | cm_event.ord = cm_node->ord_size; | |
3c2d774c | 3862 | |
5647263c | 3863 | cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); |
3c2d774c GS |
3864 | ret = cm_id->event_handler(cm_id, &cm_event); |
3865 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3866 | ||
3867 | if (ret) | |
6492cdf3 | 3868 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3869 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 FL |
3870 | attr.qp_state = IB_QPS_RTS; |
3871 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3872 | |
6492cdf3 | 3873 | nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = " |
615eb715 | 3874 | "%lu\n", nesqp->hwqp.qp_id, jiffies); |
3c2d774c GS |
3875 | |
3876 | return; | |
3877 | } | |
3878 | ||
3879 | ||
3880 | /** | |
3881 | * cm_event_connect_error | |
3882 | */ | |
1a855fbf | 3883 | static void cm_event_connect_error(struct nes_cm_event *event) |
3c2d774c GS |
3884 | { |
3885 | struct nes_qp *nesqp; | |
3886 | struct iw_cm_id *cm_id; | |
3887 | struct iw_cm_event cm_event; | |
3888 | /* struct nes_cm_info cm_info; */ | |
3889 | int ret; | |
3890 | ||
3891 | if (!event->cm_node) | |
3892 | return; | |
3893 | ||
3894 | cm_id = event->cm_node->cm_id; | |
615eb715 | 3895 | if (!cm_id) |
3c2d774c | 3896 | return; |
3c2d774c GS |
3897 | |
3898 | nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id); | |
3899 | nesqp = cm_id->provider_data; | |
3900 | ||
615eb715 | 3901 | if (!nesqp) |
3c2d774c | 3902 | return; |
3c2d774c GS |
3903 | |
3904 | /* notify OF layer about this connection error event */ | |
3905 | /* cm_id->rem_ref(cm_id); */ | |
3906 | nesqp->cm_id = NULL; | |
3907 | cm_id->provider_data = NULL; | |
3908 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
c5a7d489 | 3909 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3910 | cm_event.provider_data = cm_id->provider_data; |
3911 | cm_event.local_addr = cm_id->local_addr; | |
3912 | cm_event.remote_addr = cm_id->remote_addr; | |
3913 | cm_event.private_data = NULL; | |
3914 | cm_event.private_data_len = 0; | |
3915 | ||
24d44a39 SW |
3916 | #ifdef CONFIG_INFINIBAND_NES_DEBUG |
3917 | { | |
3918 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) | |
3919 | &cm_event.local_addr; | |
3920 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
3921 | &cm_event.remote_addr; | |
3922 | nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, remote_addr=%08x\n", | |
3923 | cm_event_laddr->sin_addr.s_addr, cm_event_raddr->sin_addr.s_addr); | |
3924 | } | |
3925 | #endif | |
3c2d774c GS |
3926 | |
3927 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3928 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3929 | if (ret) | |
6492cdf3 | 3930 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3931 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 | 3932 | cm_id->rem_ref(cm_id); |
3c2d774c | 3933 | |
6492cdf3 | 3934 | rem_ref_cm_node(event->cm_node->cm_core, event->cm_node); |
3c2d774c GS |
3935 | return; |
3936 | } | |
3937 | ||
3938 | ||
3939 | /** | |
3940 | * cm_event_reset | |
3941 | */ | |
1a855fbf | 3942 | static void cm_event_reset(struct nes_cm_event *event) |
3c2d774c GS |
3943 | { |
3944 | struct nes_qp *nesqp; | |
3945 | struct iw_cm_id *cm_id; | |
3946 | struct iw_cm_event cm_event; | |
3947 | /* struct nes_cm_info cm_info; */ | |
3948 | int ret; | |
3949 | ||
3950 | if (!event->cm_node) | |
3951 | return; | |
3952 | ||
3953 | if (!event->cm_node->cm_id) | |
3954 | return; | |
3955 | ||
3956 | cm_id = event->cm_node->cm_id; | |
3957 | ||
3958 | nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id); | |
3959 | nesqp = cm_id->provider_data; | |
f9f3f1e0 FL |
3960 | if (!nesqp) |
3961 | return; | |
3c2d774c GS |
3962 | |
3963 | nesqp->cm_id = NULL; | |
3964 | /* cm_id->provider_data = NULL; */ | |
3965 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
d0c49bf3 | 3966 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3967 | cm_event.provider_data = cm_id->provider_data; |
3968 | cm_event.local_addr = cm_id->local_addr; | |
3969 | cm_event.remote_addr = cm_id->remote_addr; | |
3970 | cm_event.private_data = NULL; | |
3971 | cm_event.private_data_len = 0; | |
3972 | ||
183ecfa3 | 3973 | cm_id->add_ref(cm_id); |
f9f3f1e0 | 3974 | ret = cm_id->event_handler(cm_id, &cm_event); |
183ecfa3 FL |
3975 | atomic_inc(&cm_closes); |
3976 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 3977 | cm_event.status = 0; |
183ecfa3 FL |
3978 | cm_event.provider_data = cm_id->provider_data; |
3979 | cm_event.local_addr = cm_id->local_addr; | |
3980 | cm_event.remote_addr = cm_id->remote_addr; | |
3981 | cm_event.private_data = NULL; | |
3982 | cm_event.private_data_len = 0; | |
3983 | nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node); | |
3984 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3985 | ||
3c2d774c GS |
3986 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3987 | ||
3988 | ||
3989 | /* notify OF layer about this connection error event */ | |
3990 | cm_id->rem_ref(cm_id); | |
3991 | ||
3992 | return; | |
3993 | } | |
3994 | ||
3995 | ||
3996 | /** | |
3997 | * cm_event_mpa_req | |
3998 | */ | |
1a855fbf | 3999 | static void cm_event_mpa_req(struct nes_cm_event *event) |
3c2d774c | 4000 | { |
615eb715 | 4001 | struct iw_cm_id *cm_id; |
3c2d774c GS |
4002 | struct iw_cm_event cm_event; |
4003 | int ret; | |
4004 | struct nes_cm_node *cm_node; | |
24d44a39 SW |
4005 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) |
4006 | &cm_event.local_addr; | |
4007 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
4008 | &cm_event.remote_addr; | |
3c2d774c GS |
4009 | |
4010 | cm_node = event->cm_node; | |
4011 | if (!cm_node) | |
4012 | return; | |
4013 | cm_id = cm_node->cm_id; | |
4014 | ||
4015 | atomic_inc(&cm_connect_reqs); | |
4016 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 4017 | cm_node, cm_id, jiffies); |
3c2d774c GS |
4018 | |
4019 | cm_event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
d0c49bf3 | 4020 | cm_event.status = 0; |
3c2d774c GS |
4021 | cm_event.provider_data = (void *)cm_node; |
4022 | ||
24d44a39 SW |
4023 | cm_event_laddr->sin_family = AF_INET; |
4024 | cm_event_laddr->sin_port = htons(event->cm_info.loc_port); | |
4025 | cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
3c2d774c | 4026 | |
24d44a39 SW |
4027 | cm_event_raddr->sin_family = AF_INET; |
4028 | cm_event_raddr->sin_port = htons(event->cm_info.rem_port); | |
4029 | cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
9d5ab133 | 4030 | cm_event.private_data = cm_node->mpa_frame_buf; |
615eb715 | 4031 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
4ac79a70 TN |
4032 | if (cm_node->mpa_frame_rev == IETF_MPA_V1) { |
4033 | cm_event.ird = NES_MAX_IRD; | |
4034 | cm_event.ord = NES_MAX_ORD; | |
4035 | } else { | |
615eb715 TN |
4036 | cm_event.ird = cm_node->ird_size; |
4037 | cm_event.ord = cm_node->ord_size; | |
4ac79a70 | 4038 | } |
9d5ab133 FL |
4039 | |
4040 | ret = cm_id->event_handler(cm_id, &cm_event); | |
4041 | if (ret) | |
4042 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", | |
615eb715 | 4043 | __func__, __LINE__, ret); |
9d5ab133 FL |
4044 | return; |
4045 | } | |
4046 | ||
4047 | ||
4048 | static void cm_event_mpa_reject(struct nes_cm_event *event) | |
4049 | { | |
615eb715 | 4050 | struct iw_cm_id *cm_id; |
9d5ab133 FL |
4051 | struct iw_cm_event cm_event; |
4052 | struct nes_cm_node *cm_node; | |
4053 | int ret; | |
24d44a39 SW |
4054 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) |
4055 | &cm_event.local_addr; | |
4056 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
4057 | &cm_event.remote_addr; | |
9d5ab133 FL |
4058 | |
4059 | cm_node = event->cm_node; | |
4060 | if (!cm_node) | |
4061 | return; | |
4062 | cm_id = cm_node->cm_id; | |
4063 | ||
4064 | atomic_inc(&cm_connect_reqs); | |
4065 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 4066 | cm_node, cm_id, jiffies); |
9d5ab133 FL |
4067 | |
4068 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
4069 | cm_event.status = -ECONNREFUSED; | |
4070 | cm_event.provider_data = cm_id->provider_data; | |
4071 | ||
24d44a39 SW |
4072 | cm_event_laddr->sin_family = AF_INET; |
4073 | cm_event_laddr->sin_port = htons(event->cm_info.loc_port); | |
4074 | cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
9d5ab133 | 4075 | |
24d44a39 SW |
4076 | cm_event_raddr->sin_family = AF_INET; |
4077 | cm_event_raddr->sin_port = htons(event->cm_info.rem_port); | |
4078 | cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
3c2d774c | 4079 | |
9d5ab133 | 4080 | cm_event.private_data = cm_node->mpa_frame_buf; |
615eb715 | 4081 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
9d5ab133 FL |
4082 | |
4083 | nes_debug(NES_DBG_CM, "call CM_EVENT_MPA_REJECTED, local_addr=%08x, " | |
615eb715 | 4084 | "remove_addr=%08x\n", |
24d44a39 SW |
4085 | cm_event_laddr->sin_addr.s_addr, |
4086 | cm_event_raddr->sin_addr.s_addr); | |
3c2d774c GS |
4087 | |
4088 | ret = cm_id->event_handler(cm_id, &cm_event); | |
4089 | if (ret) | |
9d5ab133 | 4090 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", |
615eb715 | 4091 | __func__, __LINE__, ret); |
3c2d774c GS |
4092 | |
4093 | return; | |
4094 | } | |
4095 | ||
4096 | ||
4097 | static void nes_cm_event_handler(struct work_struct *); | |
4098 | ||
4099 | /** | |
4100 | * nes_cm_post_event | |
4101 | * post an event to the cm event handler | |
4102 | */ | |
1a855fbf | 4103 | static int nes_cm_post_event(struct nes_cm_event *event) |
3c2d774c GS |
4104 | { |
4105 | atomic_inc(&event->cm_node->cm_core->events_posted); | |
4106 | add_ref_cm_node(event->cm_node); | |
4107 | event->cm_info.cm_id->add_ref(event->cm_info.cm_id); | |
4108 | INIT_WORK(&event->event_work, nes_cm_event_handler); | |
6492cdf3 | 4109 | nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n", |
615eb715 | 4110 | event->cm_node, event); |
3c2d774c GS |
4111 | |
4112 | queue_work(event->cm_node->cm_core->event_wq, &event->event_work); | |
4113 | ||
4114 | nes_debug(NES_DBG_CM, "Exit\n"); | |
4115 | return 0; | |
4116 | } | |
4117 | ||
4118 | ||
4119 | /** | |
4120 | * nes_cm_event_handler | |
4121 | * worker function to handle cm events | |
4122 | * will free instance of nes_cm_event | |
4123 | */ | |
4124 | static void nes_cm_event_handler(struct work_struct *work) | |
4125 | { | |
6492cdf3 | 4126 | struct nes_cm_event *event = container_of(work, struct nes_cm_event, |
615eb715 | 4127 | event_work); |
3c2d774c GS |
4128 | struct nes_cm_core *cm_core; |
4129 | ||
6492cdf3 | 4130 | if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core)) |
3c2d774c | 4131 | return; |
6492cdf3 | 4132 | |
3c2d774c GS |
4133 | cm_core = event->cm_node->cm_core; |
4134 | nes_debug(NES_DBG_CM, "event=%p, event->type=%u, events posted=%u\n", | |
615eb715 | 4135 | event, event->type, atomic_read(&cm_core->events_posted)); |
3c2d774c GS |
4136 | |
4137 | switch (event->type) { | |
6492cdf3 FL |
4138 | case NES_CM_EVENT_MPA_REQ: |
4139 | cm_event_mpa_req(event); | |
4140 | nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n", | |
615eb715 | 4141 | event->cm_node); |
6492cdf3 FL |
4142 | break; |
4143 | case NES_CM_EVENT_RESET: | |
4144 | nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n", | |
615eb715 | 4145 | event->cm_node); |
6492cdf3 FL |
4146 | cm_event_reset(event); |
4147 | break; | |
4148 | case NES_CM_EVENT_CONNECTED: | |
4149 | if ((!event->cm_node->cm_id) || | |
615eb715 | 4150 | (event->cm_node->state != NES_CM_STATE_TSA)) |
3c2d774c | 4151 | break; |
6492cdf3 FL |
4152 | cm_event_connected(event); |
4153 | nes_debug(NES_DBG_CM, "CM Event: CONNECTED\n"); | |
4154 | break; | |
9d5ab133 FL |
4155 | case NES_CM_EVENT_MPA_REJECT: |
4156 | if ((!event->cm_node->cm_id) || | |
615eb715 | 4157 | (event->cm_node->state == NES_CM_STATE_TSA)) |
9d5ab133 FL |
4158 | break; |
4159 | cm_event_mpa_reject(event); | |
4160 | nes_debug(NES_DBG_CM, "CM Event: REJECT\n"); | |
4161 | break; | |
4162 | ||
6492cdf3 FL |
4163 | case NES_CM_EVENT_ABORTED: |
4164 | if ((!event->cm_node->cm_id) || | |
615eb715 | 4165 | (event->cm_node->state == NES_CM_STATE_TSA)) |
3c2d774c | 4166 | break; |
6492cdf3 FL |
4167 | cm_event_connect_error(event); |
4168 | nes_debug(NES_DBG_CM, "CM Event: ABORTED\n"); | |
4169 | break; | |
4170 | case NES_CM_EVENT_DROPPED_PKT: | |
4171 | nes_debug(NES_DBG_CM, "CM Event: DROPPED PKT\n"); | |
4172 | break; | |
4173 | default: | |
4174 | nes_debug(NES_DBG_CM, "CM Event: UNKNOWN EVENT TYPE\n"); | |
4175 | break; | |
3c2d774c GS |
4176 | } |
4177 | ||
4178 | atomic_dec(&cm_core->events_posted); | |
4179 | event->cm_info.cm_id->rem_ref(event->cm_info.cm_id); | |
4180 | rem_ref_cm_node(cm_core, event->cm_node); | |
4181 | kfree(event); | |
4182 | ||
4183 | return; | |
4184 | } |