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3c2d774c | 1 | /* |
c5488c57 | 2 | * Copyright (c) 2006 - 2011 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> |
3c2d774c GS |
62 | |
63 | #include "nes.h" | |
64 | ||
65 | u32 cm_packets_sent; | |
66 | u32 cm_packets_bounced; | |
67 | u32 cm_packets_dropped; | |
68 | u32 cm_packets_retrans; | |
69 | u32 cm_packets_created; | |
70 | u32 cm_packets_received; | |
6e10d2e4 FL |
71 | atomic_t cm_listens_created; |
72 | atomic_t cm_listens_destroyed; | |
3c2d774c GS |
73 | u32 cm_backlog_drops; |
74 | atomic_t cm_loopbacks; | |
75 | atomic_t cm_nodes_created; | |
76 | atomic_t cm_nodes_destroyed; | |
77 | atomic_t cm_accel_dropped_pkts; | |
78 | atomic_t cm_resets_recvd; | |
79 | ||
615eb715 TN |
80 | static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *); |
81 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *); | |
3c2d774c | 82 | static int mini_cm_del_listen(struct nes_cm_core *, struct nes_cm_listener *); |
615eb715 | 83 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *, struct nes_vnic *, u16, void *, struct nes_cm_info *); |
6492cdf3 | 84 | static int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *); |
615eb715 TN |
85 | static int mini_cm_accept(struct nes_cm_core *, struct nes_cm_node *); |
86 | static int mini_cm_reject(struct nes_cm_core *, struct nes_cm_node *); | |
87 | static int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, struct sk_buff *); | |
1a855fbf RD |
88 | static int mini_cm_dealloc_core(struct nes_cm_core *); |
89 | static int mini_cm_get(struct nes_cm_core *); | |
90 | static int mini_cm_set(struct nes_cm_core *, u32, u32); | |
6492cdf3 | 91 | |
615eb715 | 92 | static void form_cm_frame(struct sk_buff *, struct nes_cm_node *, void *, u32, void *, u32, u8); |
6492cdf3 FL |
93 | static int add_ref_cm_node(struct nes_cm_node *); |
94 | static int rem_ref_cm_node(struct nes_cm_core *, struct nes_cm_node *); | |
95 | ||
1a855fbf RD |
96 | static int nes_cm_disconn_true(struct nes_qp *); |
97 | static int nes_cm_post_event(struct nes_cm_event *event); | |
98 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt); | |
99 | static void nes_disconnect_worker(struct work_struct *work); | |
6492cdf3 FL |
100 | |
101 | static int send_mpa_request(struct nes_cm_node *, struct sk_buff *); | |
9d5ab133 | 102 | static int send_mpa_reject(struct nes_cm_node *); |
6492cdf3 FL |
103 | static int send_syn(struct nes_cm_node *, u32, struct sk_buff *); |
104 | static int send_reset(struct nes_cm_node *, struct sk_buff *); | |
105 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb); | |
1a855fbf | 106 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb); |
615eb715 | 107 | static void process_packet(struct nes_cm_node *, struct sk_buff *, struct nes_cm_core *); |
6492cdf3 FL |
108 | |
109 | static void active_open_err(struct nes_cm_node *, struct sk_buff *, int); | |
110 | static void passive_open_err(struct nes_cm_node *, struct sk_buff *, int); | |
111 | static void cleanup_retrans_entry(struct nes_cm_node *); | |
9d5ab133 | 112 | static void handle_rcv_mpa(struct nes_cm_node *, struct sk_buff *); |
6492cdf3 | 113 | static void free_retrans_entry(struct nes_cm_node *cm_node); |
615eb715 | 114 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, struct sk_buff *skb, int optionsize, int passive); |
6492cdf3 FL |
115 | |
116 | /* CM event handler functions */ | |
117 | static void cm_event_connected(struct nes_cm_event *); | |
118 | static void cm_event_connect_error(struct nes_cm_event *); | |
119 | static void cm_event_reset(struct nes_cm_event *); | |
120 | static void cm_event_mpa_req(struct nes_cm_event *); | |
9d5ab133 FL |
121 | static void cm_event_mpa_reject(struct nes_cm_event *); |
122 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node); | |
6492cdf3 | 123 | |
615eb715 TN |
124 | /* MPA build functions */ |
125 | static int cm_build_mpa_frame(struct nes_cm_node *, u8 **, u16 *, u8 *, u8); | |
126 | static void build_mpa_v2(struct nes_cm_node *, void *, u8); | |
127 | static void build_mpa_v1(struct nes_cm_node *, void *, u8); | |
128 | static void build_rdma0_msg(struct nes_cm_node *, struct nes_qp **); | |
129 | ||
6492cdf3 | 130 | static void print_core(struct nes_cm_core *core); |
3c2d774c GS |
131 | |
132 | /* External CM API Interface */ | |
133 | /* instance of function pointers for client API */ | |
134 | /* set address of this instance to cm_core->cm_ops at cm_core alloc */ | |
135 | static struct nes_cm_ops nes_cm_api = { | |
136 | mini_cm_accelerated, | |
137 | mini_cm_listen, | |
138 | mini_cm_del_listen, | |
139 | mini_cm_connect, | |
140 | mini_cm_close, | |
141 | mini_cm_accept, | |
142 | mini_cm_reject, | |
143 | mini_cm_recv_pkt, | |
144 | mini_cm_dealloc_core, | |
145 | mini_cm_get, | |
146 | mini_cm_set | |
147 | }; | |
148 | ||
1a855fbf | 149 | static struct nes_cm_core *g_cm_core; |
3c2d774c GS |
150 | |
151 | atomic_t cm_connects; | |
152 | atomic_t cm_accepts; | |
153 | atomic_t cm_disconnects; | |
154 | atomic_t cm_closes; | |
155 | atomic_t cm_connecteds; | |
156 | atomic_t cm_connect_reqs; | |
157 | atomic_t cm_rejects; | |
158 | ||
0f0bee8b FL |
159 | int nes_add_ref_cm_node(struct nes_cm_node *cm_node) |
160 | { | |
161 | return add_ref_cm_node(cm_node); | |
162 | } | |
163 | ||
164 | int nes_rem_ref_cm_node(struct nes_cm_node *cm_node) | |
165 | { | |
166 | return rem_ref_cm_node(cm_node->cm_core, cm_node); | |
167 | } | |
3c2d774c GS |
168 | |
169 | /** | |
170 | * create_event | |
171 | */ | |
615eb715 TN |
172 | static struct nes_cm_event *create_event(struct nes_cm_node * cm_node, |
173 | enum nes_cm_event_type type) | |
3c2d774c GS |
174 | { |
175 | struct nes_cm_event *event; | |
176 | ||
177 | if (!cm_node->cm_id) | |
178 | return NULL; | |
179 | ||
180 | /* allocate an empty event */ | |
181 | event = kzalloc(sizeof(*event), GFP_ATOMIC); | |
182 | ||
183 | if (!event) | |
184 | return NULL; | |
185 | ||
186 | event->type = type; | |
187 | event->cm_node = cm_node; | |
188 | event->cm_info.rem_addr = cm_node->rem_addr; | |
189 | event->cm_info.loc_addr = cm_node->loc_addr; | |
190 | event->cm_info.rem_port = cm_node->rem_port; | |
191 | event->cm_info.loc_port = cm_node->loc_port; | |
192 | event->cm_info.cm_id = cm_node->cm_id; | |
193 | ||
6492cdf3 | 194 | nes_debug(NES_DBG_CM, "cm_node=%p Created event=%p, type=%u, " |
615eb715 TN |
195 | "dst_addr=%08x[%x], src_addr=%08x[%x]\n", |
196 | cm_node, event, type, event->cm_info.loc_addr, | |
197 | event->cm_info.loc_port, event->cm_info.rem_addr, | |
198 | event->cm_info.rem_port); | |
3c2d774c GS |
199 | |
200 | nes_cm_post_event(event); | |
201 | return event; | |
202 | } | |
203 | ||
204 | ||
205 | /** | |
206 | * send_mpa_request | |
207 | */ | |
6492cdf3 | 208 | static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c | 209 | { |
615eb715 TN |
210 | u8 start_addr = 0; |
211 | u8 *start_ptr = &start_addr; | |
212 | u8 **start_buff = &start_ptr; | |
213 | u16 buff_len = 0; | |
214 | ||
3c2d774c | 215 | if (!skb) { |
6492cdf3 | 216 | nes_debug(NES_DBG_CM, "skb set to NULL\n"); |
3c2d774c GS |
217 | return -1; |
218 | } | |
219 | ||
220 | /* send an MPA Request frame */ | |
615eb715 TN |
221 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REQUEST); |
222 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK); | |
3c2d774c | 223 | |
9d5ab133 FL |
224 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); |
225 | } | |
3c2d774c | 226 | |
9d5ab133 FL |
227 | |
228 | ||
229 | static int send_mpa_reject(struct nes_cm_node *cm_node) | |
230 | { | |
615eb715 TN |
231 | struct sk_buff *skb = NULL; |
232 | u8 start_addr = 0; | |
233 | u8 *start_ptr = &start_addr; | |
234 | u8 **start_buff = &start_ptr; | |
235 | u16 buff_len = 0; | |
81f99dcc | 236 | struct ietf_mpa_v1 *mpa_frame; |
9d5ab133 FL |
237 | |
238 | skb = dev_alloc_skb(MAX_CM_BUFFER); | |
239 | if (!skb) { | |
240 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
241 | return -ENOMEM; | |
242 | } | |
243 | ||
244 | /* send an MPA reject frame */ | |
615eb715 | 245 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REPLY); |
81f99dcc TN |
246 | mpa_frame = (struct ietf_mpa_v1 *)*start_buff; |
247 | mpa_frame->flags |= IETF_MPA_FLAGS_REJECT; | |
615eb715 | 248 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK | SET_FIN); |
9d5ab133 FL |
249 | |
250 | cm_node->state = NES_CM_STATE_FIN_WAIT1; | |
251 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
3c2d774c GS |
252 | } |
253 | ||
254 | ||
255 | /** | |
256 | * recv_mpa - process a received TCP pkt, we are expecting an | |
257 | * IETF MPA frame | |
258 | */ | |
9d5ab133 | 259 | static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type, |
615eb715 | 260 | u32 len) |
3c2d774c | 261 | { |
615eb715 TN |
262 | struct ietf_mpa_v1 *mpa_frame; |
263 | struct ietf_mpa_v2 *mpa_v2_frame; | |
264 | struct ietf_rtr_msg *rtr_msg; | |
265 | int mpa_hdr_len; | |
266 | int priv_data_len; | |
3c2d774c | 267 | |
9d5ab133 FL |
268 | *type = NES_MPA_REQUEST_ACCEPT; |
269 | ||
3c2d774c | 270 | /* assume req frame is in tcp data payload */ |
615eb715 | 271 | if (len < sizeof(struct ietf_mpa_v1)) { |
3c2d774c | 272 | nes_debug(NES_DBG_CM, "The received ietf buffer was too small (%x)\n", len); |
9d5ab133 | 273 | return -EINVAL; |
3c2d774c GS |
274 | } |
275 | ||
615eb715 TN |
276 | /* points to the beginning of the frame, which could be MPA V1 or V2 */ |
277 | mpa_frame = (struct ietf_mpa_v1 *)buffer; | |
278 | mpa_hdr_len = sizeof(struct ietf_mpa_v1); | |
279 | priv_data_len = ntohs(mpa_frame->priv_data_len); | |
280 | ||
1cf078c9 | 281 | /* make sure mpa private data len is less than 512 bytes */ |
615eb715 | 282 | if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) { |
1cf078c9 | 283 | nes_debug(NES_DBG_CM, "The received Length of Private" |
615eb715 | 284 | " Data field exceeds 512 octets\n"); |
1cf078c9 FL |
285 | return -EINVAL; |
286 | } | |
287 | /* | |
288 | * make sure MPA receiver interoperate with the | |
289 | * received MPA version and MPA key information | |
290 | * | |
291 | */ | |
615eb715 TN |
292 | if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) { |
293 | nes_debug(NES_DBG_CM, "The received mpa version" | |
294 | " is not supported\n"); | |
295 | return -EINVAL; | |
296 | } | |
297 | /* | |
298 | * backwards compatibility only | |
299 | */ | |
300 | if (mpa_frame->rev > cm_node->mpa_frame_rev) { | |
1cf078c9 | 301 | nes_debug(NES_DBG_CM, "The received mpa version" |
615eb715 | 302 | " can not be interoperated\n"); |
1cf078c9 | 303 | return -EINVAL; |
615eb715 TN |
304 | } else { |
305 | cm_node->mpa_frame_rev = mpa_frame->rev; | |
1cf078c9 | 306 | } |
615eb715 | 307 | |
1cf078c9 FL |
308 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { |
309 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) { | |
310 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); | |
311 | return -EINVAL; | |
312 | } | |
313 | } else { | |
314 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) { | |
315 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); | |
316 | return -EINVAL; | |
317 | } | |
318 | } | |
3c2d774c | 319 | |
615eb715 TN |
320 | |
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 | } | |
359 | ||
360 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { | |
361 | /* responder */ | |
362 | if (cm_node->ord_size > ird_size) | |
363 | cm_node->ord_size = ird_size; | |
364 | } else { | |
365 | /* initiator */ | |
366 | if (cm_node->ord_size > ird_size) | |
367 | cm_node->ord_size = ird_size; | |
368 | ||
369 | if (cm_node->ird_size < ord_size) { | |
370 | /* no resources available */ | |
371 | /* send terminate message */ | |
372 | return -EINVAL; | |
373 | } | |
374 | } | |
375 | ||
8dd87fba | 376 | if (rtr_ctrl_ord & IETF_RDMA0_READ) { |
615eb715 | 377 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; |
8dd87fba | 378 | } else if (rtr_ctrl_ord & IETF_RDMA0_WRITE) { |
615eb715 TN |
379 | cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO; |
380 | } else { /* Not supported RDMA0 operation */ | |
381 | return -EINVAL; | |
382 | } | |
383 | break; | |
384 | } | |
385 | case IETF_MPA_V1: | |
386 | default: | |
387 | break; | |
388 | } | |
389 | ||
3c2d774c | 390 | /* copy entire MPA frame to our cm_node's frame */ |
615eb715 | 391 | memcpy(cm_node->mpa_frame_buf, buffer + mpa_hdr_len, cm_node->mpa_frame_size); |
3c2d774c | 392 | |
9d5ab133 FL |
393 | if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT) |
394 | *type = NES_MPA_REQUEST_REJECT; | |
3c2d774c GS |
395 | return 0; |
396 | } | |
397 | ||
398 | ||
3c2d774c GS |
399 | /** |
400 | * form_cm_frame - get a free packet and build empty frame Use | |
401 | * node info to build. | |
402 | */ | |
6098d107 | 403 | static void form_cm_frame(struct sk_buff *skb, |
615eb715 TN |
404 | struct nes_cm_node *cm_node, void *options, u32 optionsize, |
405 | void *data, u32 datasize, u8 flags) | |
3c2d774c GS |
406 | { |
407 | struct tcphdr *tcph; | |
408 | struct iphdr *iph; | |
409 | struct ethhdr *ethh; | |
410 | u8 *buf; | |
411 | u16 packetsize = sizeof(*iph); | |
412 | ||
413 | packetsize += sizeof(*tcph); | |
615eb715 | 414 | packetsize += optionsize + datasize; |
3c2d774c | 415 | |
615eb715 | 416 | skb_trim(skb, 0); |
3c2d774c GS |
417 | memset(skb->data, 0x00, ETH_HLEN + sizeof(*iph) + sizeof(*tcph)); |
418 | ||
3c2d774c GS |
419 | buf = skb_put(skb, packetsize + ETH_HLEN); |
420 | ||
615eb715 | 421 | ethh = (struct ethhdr *)buf; |
3c2d774c GS |
422 | buf += ETH_HLEN; |
423 | ||
424 | iph = (struct iphdr *)buf; | |
425 | buf += sizeof(*iph); | |
426 | tcph = (struct tcphdr *)buf; | |
427 | skb_reset_mac_header(skb); | |
428 | skb_set_network_header(skb, ETH_HLEN); | |
615eb715 | 429 | skb_set_transport_header(skb, ETH_HLEN + sizeof(*iph)); |
3c2d774c GS |
430 | buf += sizeof(*tcph); |
431 | ||
432 | skb->ip_summed = CHECKSUM_PARTIAL; | |
fc4ba729 TN |
433 | if (!(cm_node->netdev->features & NETIF_F_IP_CSUM)) |
434 | skb->ip_summed = CHECKSUM_NONE; | |
3c2d774c GS |
435 | skb->protocol = htons(0x800); |
436 | skb->data_len = 0; | |
437 | skb->mac_len = ETH_HLEN; | |
438 | ||
439 | memcpy(ethh->h_dest, cm_node->rem_mac, ETH_ALEN); | |
440 | memcpy(ethh->h_source, cm_node->loc_mac, ETH_ALEN); | |
441 | ethh->h_proto = htons(0x0800); | |
442 | ||
443 | iph->version = IPVERSION; | |
615eb715 | 444 | iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ |
3c2d774c GS |
445 | iph->tos = 0; |
446 | iph->tot_len = htons(packetsize); | |
447 | iph->id = htons(++cm_node->tcp_cntxt.loc_id); | |
448 | ||
449 | iph->frag_off = htons(0x4000); | |
450 | iph->ttl = 0x40; | |
615eb715 | 451 | iph->protocol = 0x06; /* IPPROTO_TCP */ |
3c2d774c GS |
452 | |
453 | iph->saddr = htonl(cm_node->loc_addr); | |
454 | iph->daddr = htonl(cm_node->rem_addr); | |
455 | ||
456 | tcph->source = htons(cm_node->loc_port); | |
457 | tcph->dest = htons(cm_node->rem_port); | |
458 | tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num); | |
459 | ||
460 | if (flags & SET_ACK) { | |
461 | cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt; | |
462 | tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); | |
463 | tcph->ack = 1; | |
615eb715 | 464 | } else { |
3c2d774c | 465 | tcph->ack_seq = 0; |
615eb715 | 466 | } |
3c2d774c GS |
467 | |
468 | if (flags & SET_SYN) { | |
469 | cm_node->tcp_cntxt.loc_seq_num++; | |
470 | tcph->syn = 1; | |
615eb715 | 471 | } else { |
6492cdf3 | 472 | cm_node->tcp_cntxt.loc_seq_num += datasize; |
615eb715 | 473 | } |
3c2d774c | 474 | |
6492cdf3 FL |
475 | if (flags & SET_FIN) { |
476 | cm_node->tcp_cntxt.loc_seq_num++; | |
3c2d774c | 477 | tcph->fin = 1; |
6492cdf3 | 478 | } |
3c2d774c GS |
479 | |
480 | if (flags & SET_RST) | |
481 | tcph->rst = 1; | |
482 | ||
483 | tcph->doff = (u16)((sizeof(*tcph) + optionsize + 3) >> 2); | |
484 | tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); | |
485 | tcph->urg_ptr = 0; | |
486 | if (optionsize) | |
487 | memcpy(buf, options, optionsize); | |
488 | buf += optionsize; | |
489 | if (datasize) | |
490 | memcpy(buf, data, datasize); | |
491 | ||
492 | skb_shinfo(skb)->nr_frags = 0; | |
493 | cm_packets_created++; | |
3c2d774c GS |
494 | } |
495 | ||
3c2d774c GS |
496 | /** |
497 | * print_core - dump a cm core | |
498 | */ | |
499 | static void print_core(struct nes_cm_core *core) | |
500 | { | |
501 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
502 | nes_debug(NES_DBG_CM, "CM Core -- (core = %p )\n", core); | |
503 | if (!core) | |
504 | return; | |
505 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
3c2d774c | 506 | |
615eb715 | 507 | nes_debug(NES_DBG_CM, "State : %u \n", core->state); |
3c2d774c | 508 | |
3c2d774c GS |
509 | nes_debug(NES_DBG_CM, "Listen Nodes : %u \n", atomic_read(&core->listen_node_cnt)); |
510 | nes_debug(NES_DBG_CM, "Active Nodes : %u \n", atomic_read(&core->node_cnt)); | |
511 | ||
512 | nes_debug(NES_DBG_CM, "core : %p \n", core); | |
513 | ||
514 | nes_debug(NES_DBG_CM, "-------------- end core ---------------\n"); | |
515 | } | |
516 | ||
615eb715 TN |
517 | /** |
518 | * cm_build_mpa_frame - build a MPA V1 frame or MPA V2 frame | |
519 | */ | |
520 | static int cm_build_mpa_frame(struct nes_cm_node *cm_node, u8 **start_buff, | |
521 | u16 *buff_len, u8 *pci_mem, u8 mpa_key) | |
522 | { | |
523 | int ret = 0; | |
524 | ||
525 | *start_buff = (pci_mem) ? pci_mem : &cm_node->mpa_frame_buf[0]; | |
526 | ||
527 | switch (cm_node->mpa_frame_rev) { | |
528 | case IETF_MPA_V1: | |
529 | *start_buff = (u8 *)*start_buff + sizeof(struct ietf_rtr_msg); | |
530 | *buff_len = sizeof(struct ietf_mpa_v1) + cm_node->mpa_frame_size; | |
531 | build_mpa_v1(cm_node, *start_buff, mpa_key); | |
532 | break; | |
533 | case IETF_MPA_V2: | |
534 | *buff_len = sizeof(struct ietf_mpa_v2) + cm_node->mpa_frame_size; | |
535 | build_mpa_v2(cm_node, *start_buff, mpa_key); | |
536 | break; | |
537 | default: | |
538 | ret = -EINVAL; | |
539 | } | |
540 | return ret; | |
541 | } | |
542 | ||
543 | /** | |
544 | * build_mpa_v2 - build a MPA V2 frame | |
545 | */ | |
546 | static void build_mpa_v2(struct nes_cm_node *cm_node, | |
547 | void *start_addr, u8 mpa_key) | |
548 | { | |
549 | struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr; | |
550 | struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg; | |
8dd87fba TN |
551 | u16 ctrl_ird; |
552 | u16 ctrl_ord; | |
615eb715 TN |
553 | |
554 | /* initialize the upper 5 bytes of the frame */ | |
555 | build_mpa_v1(cm_node, start_addr, mpa_key); | |
556 | mpa_frame->flags |= IETF_MPA_V2_FLAG; /* set a bit to indicate MPA V2 */ | |
557 | mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE); | |
558 | ||
559 | /* initialize RTR msg */ | |
8dd87fba | 560 | ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ? |
615eb715 | 561 | IETF_NO_IRD_ORD : cm_node->ird_size; |
8dd87fba | 562 | ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ? |
615eb715 TN |
563 | IETF_NO_IRD_ORD : cm_node->ord_size; |
564 | ||
8dd87fba TN |
565 | ctrl_ird |= IETF_PEER_TO_PEER; |
566 | ctrl_ird |= IETF_FLPDU_ZERO_LEN; | |
615eb715 TN |
567 | |
568 | switch (mpa_key) { | |
569 | case MPA_KEY_REQUEST: | |
8dd87fba TN |
570 | ctrl_ord |= IETF_RDMA0_WRITE; |
571 | ctrl_ord |= IETF_RDMA0_READ; | |
615eb715 TN |
572 | break; |
573 | case MPA_KEY_REPLY: | |
574 | switch (cm_node->send_rdma0_op) { | |
575 | case SEND_RDMA_WRITE_ZERO: | |
8dd87fba | 576 | ctrl_ord |= IETF_RDMA0_WRITE; |
615eb715 TN |
577 | break; |
578 | case SEND_RDMA_READ_ZERO: | |
8dd87fba | 579 | ctrl_ord |= IETF_RDMA0_READ; |
615eb715 TN |
580 | break; |
581 | } | |
582 | } | |
8dd87fba TN |
583 | rtr_msg->ctrl_ird = htons(ctrl_ird); |
584 | rtr_msg->ctrl_ord = htons(ctrl_ord); | |
615eb715 TN |
585 | } |
586 | ||
587 | /** | |
588 | * build_mpa_v1 - build a MPA V1 frame | |
589 | */ | |
590 | static void build_mpa_v1(struct nes_cm_node *cm_node, void *start_addr, u8 mpa_key) | |
591 | { | |
592 | struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr; | |
593 | ||
594 | switch (mpa_key) { | |
595 | case MPA_KEY_REQUEST: | |
596 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE); | |
597 | break; | |
598 | case MPA_KEY_REPLY: | |
599 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE); | |
600 | break; | |
601 | } | |
602 | mpa_frame->flags = IETF_MPA_FLAGS_CRC; | |
603 | mpa_frame->rev = cm_node->mpa_frame_rev; | |
604 | mpa_frame->priv_data_len = htons(cm_node->mpa_frame_size); | |
605 | } | |
606 | ||
607 | static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_addr) | |
608 | { | |
609 | u64 u64temp; | |
610 | struct nes_qp *nesqp = *nesqp_addr; | |
611 | struct nes_hw_qp_wqe *wqe = &nesqp->hwqp.sq_vbase[0]; | |
612 | ||
613 | u64temp = (unsigned long)nesqp; | |
614 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; | |
615 | set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp); | |
616 | ||
617 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0; | |
618 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0; | |
619 | ||
620 | switch (cm_node->send_rdma0_op) { | |
621 | case SEND_RDMA_WRITE_ZERO: | |
622 | nes_debug(NES_DBG_CM, "Sending first write.\n"); | |
623 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
624 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAW); | |
625 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0; | |
626 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0; | |
627 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; | |
628 | break; | |
629 | ||
630 | case SEND_RDMA_READ_ZERO: | |
631 | default: | |
079abea6 JL |
632 | if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO) |
633 | WARN(1, "Unsupported RDMA0 len operation=%u\n", | |
634 | cm_node->send_rdma0_op); | |
615eb715 TN |
635 | nes_debug(NES_DBG_CM, "Sending first rdma operation.\n"); |
636 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
637 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAR); | |
638 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = 1; | |
639 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = 0; | |
640 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 0; | |
641 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = 1; | |
642 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 1; | |
643 | break; | |
644 | } | |
645 | ||
646 | if (nesqp->sq_kmapped) { | |
647 | nesqp->sq_kmapped = 0; | |
648 | kunmap(nesqp->page); | |
649 | } | |
650 | ||
651 | /*use the reserved spot on the WQ for the extra first WQE*/ | |
652 | nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
653 | NES_QPCONTEXT_ORDIRD_WRPDU | | |
654 | NES_QPCONTEXT_ORDIRD_ALSMM)); | |
655 | nesqp->skip_lsmm = 1; | |
656 | nesqp->hwqp.sq_tail = 0; | |
657 | } | |
3c2d774c GS |
658 | |
659 | /** | |
660 | * schedule_nes_timer | |
661 | * note - cm_node needs to be protected before calling this. Encase in: | |
662 | * rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node); | |
663 | */ | |
664 | int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 TN |
665 | enum nes_timer_type type, int send_retrans, |
666 | int close_when_complete) | |
3c2d774c | 667 | { |
615eb715 | 668 | unsigned long flags; |
6492cdf3 | 669 | struct nes_cm_core *cm_core = cm_node->cm_core; |
3c2d774c GS |
670 | struct nes_timer_entry *new_send; |
671 | int ret = 0; | |
3c2d774c GS |
672 | |
673 | new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC); | |
674 | if (!new_send) | |
9d5ab133 | 675 | return -ENOMEM; |
3c2d774c GS |
676 | |
677 | /* new_send->timetosend = currenttime */ | |
678 | new_send->retrycount = NES_DEFAULT_RETRYS; | |
679 | new_send->retranscount = NES_DEFAULT_RETRANS; | |
680 | new_send->skb = skb; | |
681 | new_send->timetosend = jiffies; | |
682 | new_send->type = type; | |
683 | new_send->netdev = cm_node->netdev; | |
684 | new_send->send_retrans = send_retrans; | |
685 | new_send->close_when_complete = close_when_complete; | |
686 | ||
687 | if (type == NES_TIMER_TYPE_CLOSE) { | |
615eb715 | 688 | new_send->timetosend += (HZ / 10); |
9d5ab133 | 689 | if (cm_node->recv_entry) { |
79fc3d74 | 690 | kfree(new_send); |
9d5ab133 FL |
691 | WARN_ON(1); |
692 | return -EINVAL; | |
693 | } | |
694 | cm_node->recv_entry = new_send; | |
3c2d774c GS |
695 | } |
696 | ||
697 | if (type == NES_TIMER_TYPE_SEND) { | |
b30db1c1 | 698 | new_send->seq_num = ntohl(tcp_hdr(skb)->seq); |
3c2d774c | 699 | atomic_inc(&new_send->skb->users); |
6492cdf3 FL |
700 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
701 | cm_node->send_entry = new_send; | |
702 | add_ref_cm_node(cm_node); | |
703 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
704 | new_send->timetosend = jiffies + NES_RETRY_TIMEOUT; | |
3c2d774c GS |
705 | |
706 | ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev); | |
707 | if (ret != NETDEV_TX_OK) { | |
6492cdf3 | 708 | nes_debug(NES_DBG_CM, "Error sending packet %p " |
615eb715 | 709 | "(jiffies = %lu)\n", new_send, jiffies); |
3c2d774c | 710 | new_send->timetosend = jiffies; |
5962c2c8 | 711 | ret = NETDEV_TX_OK; |
3c2d774c GS |
712 | } else { |
713 | cm_packets_sent++; | |
714 | if (!send_retrans) { | |
6492cdf3 | 715 | cleanup_retrans_entry(cm_node); |
3c2d774c | 716 | if (close_when_complete) |
6492cdf3 | 717 | rem_ref_cm_node(cm_core, cm_node); |
3c2d774c GS |
718 | return ret; |
719 | } | |
3c2d774c | 720 | } |
3c2d774c | 721 | } |
3c2d774c | 722 | |
00ad255d TN |
723 | if (!timer_pending(&cm_core->tcp_timer)) |
724 | mod_timer(&cm_core->tcp_timer, new_send->timetosend); | |
3c2d774c GS |
725 | |
726 | return ret; | |
727 | } | |
728 | ||
9d5ab133 FL |
729 | static void nes_retrans_expired(struct nes_cm_node *cm_node) |
730 | { | |
68237a0f | 731 | struct iw_cm_id *cm_id = cm_node->cm_id; |
dae58728 FL |
732 | enum nes_cm_node_state state = cm_node->state; |
733 | cm_node->state = NES_CM_STATE_CLOSED; | |
615eb715 | 734 | |
dae58728 | 735 | switch (state) { |
9d5ab133 FL |
736 | case NES_CM_STATE_SYN_RCVD: |
737 | case NES_CM_STATE_CLOSING: | |
738 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
739 | break; | |
740 | case NES_CM_STATE_LAST_ACK: | |
741 | case NES_CM_STATE_FIN_WAIT1: | |
68237a0f FL |
742 | if (cm_node->cm_id) |
743 | cm_id->rem_ref(cm_id); | |
9d5ab133 FL |
744 | send_reset(cm_node, NULL); |
745 | break; | |
746 | default: | |
69524e1a FL |
747 | add_ref_cm_node(cm_node); |
748 | send_reset(cm_node, NULL); | |
9d5ab133 FL |
749 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
750 | } | |
751 | } | |
752 | ||
753 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node) | |
754 | { | |
755 | struct nes_timer_entry *recv_entry = cm_node->recv_entry; | |
756 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
757 | struct nes_qp *nesqp; | |
758 | unsigned long qplockflags; | |
759 | ||
760 | if (!recv_entry) | |
761 | return; | |
762 | nesqp = (struct nes_qp *)recv_entry->skb; | |
763 | if (nesqp) { | |
764 | spin_lock_irqsave(&nesqp->lock, qplockflags); | |
765 | if (nesqp->cm_id) { | |
766 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
767 | "refcount = %d: HIT A " |
768 | "NES_TIMER_TYPE_CLOSE with something " | |
769 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
770 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
771 | nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; |
772 | nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; | |
773 | nesqp->ibqp_state = IB_QPS_ERR; | |
774 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
775 | nes_cm_disconn(nesqp); | |
776 | } else { | |
777 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
778 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
779 | "refcount = %d: HIT A " |
780 | "NES_TIMER_TYPE_CLOSE with nothing " | |
781 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
782 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
783 | } |
784 | } else if (rem_node) { | |
785 | /* TIME_WAIT state */ | |
786 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
787 | } | |
788 | if (cm_node->cm_id) | |
789 | cm_id->rem_ref(cm_id); | |
790 | kfree(recv_entry); | |
791 | cm_node->recv_entry = NULL; | |
792 | } | |
3c2d774c GS |
793 | |
794 | /** | |
795 | * nes_cm_timer_tick | |
796 | */ | |
1a855fbf | 797 | static void nes_cm_timer_tick(unsigned long pass) |
3c2d774c | 798 | { |
9d5ab133 | 799 | unsigned long flags; |
3c2d774c | 800 | unsigned long nexttimeout = jiffies + NES_LONG_TIME; |
3c2d774c GS |
801 | struct nes_cm_node *cm_node; |
802 | struct nes_timer_entry *send_entry, *recv_entry; | |
9d5ab133 FL |
803 | struct list_head *list_core_temp; |
804 | struct list_head *list_node; | |
3c2d774c | 805 | struct nes_cm_core *cm_core = g_cm_core; |
3c2d774c | 806 | u32 settimer = 0; |
4e9c3900 | 807 | unsigned long timetosend; |
3c2d774c | 808 | int ret = NETDEV_TX_OK; |
3c2d774c | 809 | |
879e5bd5 | 810 | struct list_head timer_list; |
615eb715 | 811 | |
879e5bd5 | 812 | INIT_LIST_HEAD(&timer_list); |
3c2d774c GS |
813 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
814 | ||
6492cdf3 | 815 | list_for_each_safe(list_node, list_core_temp, |
615eb715 | 816 | &cm_core->connected_nodes) { |
3c2d774c | 817 | cm_node = container_of(list_node, struct nes_cm_node, list); |
9d5ab133 | 818 | if ((cm_node->recv_entry) || (cm_node->send_entry)) { |
879e5bd5 FL |
819 | add_ref_cm_node(cm_node); |
820 | list_add(&cm_node->timer_entry, &timer_list); | |
821 | } | |
822 | } | |
823 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
824 | ||
825 | list_for_each_safe(list_node, list_core_temp, &timer_list) { | |
826 | cm_node = container_of(list_node, struct nes_cm_node, | |
615eb715 | 827 | timer_entry); |
9d5ab133 FL |
828 | recv_entry = cm_node->recv_entry; |
829 | ||
830 | if (recv_entry) { | |
6492cdf3 FL |
831 | if (time_after(recv_entry->timetosend, jiffies)) { |
832 | if (nexttimeout > recv_entry->timetosend || | |
615eb715 | 833 | !settimer) { |
3c2d774c GS |
834 | nexttimeout = recv_entry->timetosend; |
835 | settimer = 1; | |
836 | } | |
615eb715 | 837 | } else { |
9d5ab133 | 838 | handle_recv_entry(cm_node, 1); |
615eb715 | 839 | } |
3c2d774c | 840 | } |
3c2d774c GS |
841 | |
842 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); | |
6492cdf3 FL |
843 | do { |
844 | send_entry = cm_node->send_entry; | |
845 | if (!send_entry) | |
c5d321e5 | 846 | break; |
3c2d774c GS |
847 | if (time_after(send_entry->timetosend, jiffies)) { |
848 | if (cm_node->state != NES_CM_STATE_TSA) { | |
6492cdf3 | 849 | if ((nexttimeout > |
615eb715 TN |
850 | send_entry->timetosend) || |
851 | !settimer) { | |
6492cdf3 FL |
852 | nexttimeout = |
853 | send_entry->timetosend; | |
3c2d774c GS |
854 | settimer = 1; |
855 | } | |
3c2d774c | 856 | } else { |
6492cdf3 | 857 | free_retrans_entry(cm_node); |
3c2d774c | 858 | } |
9d5ab133 | 859 | break; |
3c2d774c | 860 | } |
6492cdf3 FL |
861 | |
862 | if ((cm_node->state == NES_CM_STATE_TSA) || | |
615eb715 | 863 | (cm_node->state == NES_CM_STATE_CLOSED)) { |
6492cdf3 | 864 | free_retrans_entry(cm_node); |
c5d321e5 | 865 | break; |
3c2d774c GS |
866 | } |
867 | ||
6492cdf3 | 868 | if (!send_entry->retranscount || |
615eb715 | 869 | !send_entry->retrycount) { |
3c2d774c | 870 | cm_packets_dropped++; |
6492cdf3 | 871 | free_retrans_entry(cm_node); |
9d5ab133 | 872 | |
6492cdf3 FL |
873 | spin_unlock_irqrestore( |
874 | &cm_node->retrans_list_lock, flags); | |
9d5ab133 FL |
875 | nes_retrans_expired(cm_node); |
876 | cm_node->state = NES_CM_STATE_CLOSED; | |
6492cdf3 | 877 | spin_lock_irqsave(&cm_node->retrans_list_lock, |
615eb715 | 878 | flags); |
c5d321e5 | 879 | break; |
3c2d774c | 880 | } |
3c2d774c GS |
881 | atomic_inc(&send_entry->skb->users); |
882 | cm_packets_retrans++; | |
6492cdf3 | 883 | nes_debug(NES_DBG_CM, "Retransmitting send_entry %p " |
615eb715 TN |
884 | "for node %p, jiffies = %lu, time to send = " |
885 | "%lu, retranscount = %u, send_entry->seq_num = " | |
886 | "0x%08X, cm_node->tcp_cntxt.rem_ack_num = " | |
887 | "0x%08X\n", send_entry, cm_node, jiffies, | |
888 | send_entry->timetosend, | |
889 | send_entry->retranscount, | |
890 | send_entry->seq_num, | |
891 | cm_node->tcp_cntxt.rem_ack_num); | |
6492cdf3 FL |
892 | |
893 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, | |
615eb715 | 894 | flags); |
3c2d774c | 895 | ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev); |
6492cdf3 | 896 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
3c2d774c | 897 | if (ret != NETDEV_TX_OK) { |
6492cdf3 | 898 | nes_debug(NES_DBG_CM, "rexmit failed for " |
615eb715 | 899 | "node=%p\n", cm_node); |
3c2d774c | 900 | cm_packets_bounced++; |
3c2d774c GS |
901 | send_entry->retrycount--; |
902 | nexttimeout = jiffies + NES_SHORT_TIME; | |
903 | settimer = 1; | |
c5d321e5 | 904 | break; |
3c2d774c GS |
905 | } else { |
906 | cm_packets_sent++; | |
907 | } | |
6492cdf3 | 908 | nes_debug(NES_DBG_CM, "Packet Sent: retrans count = " |
615eb715 TN |
909 | "%u, retry count = %u.\n", |
910 | send_entry->retranscount, | |
911 | send_entry->retrycount); | |
3c2d774c GS |
912 | if (send_entry->send_retrans) { |
913 | send_entry->retranscount--; | |
4e9c3900 | 914 | timetosend = (NES_RETRY_TIMEOUT << |
615eb715 | 915 | (NES_DEFAULT_RETRANS - send_entry->retranscount)); |
4e9c3900 | 916 | |
6492cdf3 | 917 | send_entry->timetosend = jiffies + |
615eb715 | 918 | min(timetosend, NES_MAX_TIMEOUT); |
6492cdf3 | 919 | if (nexttimeout > send_entry->timetosend || |
615eb715 | 920 | !settimer) { |
3c2d774c GS |
921 | nexttimeout = send_entry->timetosend; |
922 | settimer = 1; | |
923 | } | |
3c2d774c GS |
924 | } else { |
925 | int close_when_complete; | |
6492cdf3 FL |
926 | close_when_complete = |
927 | send_entry->close_when_complete; | |
928 | nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n", | |
615eb715 | 929 | cm_node, cm_node->state); |
6492cdf3 FL |
930 | free_retrans_entry(cm_node); |
931 | if (close_when_complete) | |
932 | rem_ref_cm_node(cm_node->cm_core, | |
615eb715 | 933 | cm_node); |
3c2d774c | 934 | } |
6492cdf3 | 935 | } while (0); |
3c2d774c | 936 | |
6492cdf3 FL |
937 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
938 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 939 | } |
3c2d774c GS |
940 | |
941 | if (settimer) { | |
00ad255d TN |
942 | if (!timer_pending(&cm_core->tcp_timer)) |
943 | mod_timer(&cm_core->tcp_timer, nexttimeout); | |
3c2d774c GS |
944 | } |
945 | } | |
946 | ||
947 | ||
948 | /** | |
949 | * send_syn | |
950 | */ | |
6492cdf3 | 951 | static int send_syn(struct nes_cm_node *cm_node, u32 sendack, |
615eb715 | 952 | struct sk_buff *skb) |
3c2d774c GS |
953 | { |
954 | int ret; | |
955 | int flags = SET_SYN; | |
3c2d774c | 956 | char optionsbuffer[sizeof(struct option_mss) + |
615eb715 TN |
957 | sizeof(struct option_windowscale) + sizeof(struct option_base) + |
958 | TCP_OPTIONS_PADDING]; | |
3c2d774c GS |
959 | |
960 | int optionssize = 0; | |
961 | /* Sending MSS option */ | |
962 | union all_known_options *options; | |
963 | ||
964 | if (!cm_node) | |
965 | return -EINVAL; | |
966 | ||
967 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
968 | options->as_mss.optionnum = OPTION_NUMBER_MSS; | |
969 | options->as_mss.length = sizeof(struct option_mss); | |
970 | options->as_mss.mss = htons(cm_node->tcp_cntxt.mss); | |
971 | optionssize += sizeof(struct option_mss); | |
972 | ||
973 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
974 | options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE; | |
975 | options->as_windowscale.length = sizeof(struct option_windowscale); | |
976 | options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale; | |
977 | optionssize += sizeof(struct option_windowscale); | |
978 | ||
6492cdf3 | 979 | if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)) { |
3c2d774c GS |
980 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
981 | options->as_base.optionnum = OPTION_NUMBER_WRITE0; | |
982 | options->as_base.length = sizeof(struct option_base); | |
983 | optionssize += sizeof(struct option_base); | |
984 | /* we need the size to be a multiple of 4 */ | |
985 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
986 | options->as_end = 1; | |
987 | optionssize += 1; | |
988 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
989 | options->as_end = 1; | |
990 | optionssize += 1; | |
991 | } | |
992 | ||
993 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
994 | options->as_end = OPTION_NUMBER_END; | |
995 | optionssize += 1; | |
996 | ||
6492cdf3 | 997 | if (!skb) |
e189062a | 998 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
999 | if (!skb) { |
1000 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1001 | return -1; | |
1002 | } | |
1003 | ||
1004 | if (sendack) | |
1005 | flags |= SET_ACK; | |
1006 | ||
1007 | form_cm_frame(skb, cm_node, optionsbuffer, optionssize, NULL, 0, flags); | |
1008 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1009 | ||
1010 | return ret; | |
1011 | } | |
1012 | ||
1013 | ||
1014 | /** | |
1015 | * send_reset | |
1016 | */ | |
6492cdf3 | 1017 | static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1018 | { |
1019 | int ret; | |
3c2d774c GS |
1020 | int flags = SET_RST | SET_ACK; |
1021 | ||
6492cdf3 | 1022 | if (!skb) |
e189062a | 1023 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1024 | if (!skb) { |
1025 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
9d5ab133 | 1026 | return -ENOMEM; |
3c2d774c GS |
1027 | } |
1028 | ||
3c2d774c GS |
1029 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags); |
1030 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1); | |
1031 | ||
1032 | return ret; | |
1033 | } | |
1034 | ||
1035 | ||
1036 | /** | |
1037 | * send_ack | |
1038 | */ | |
6492cdf3 | 1039 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1040 | { |
1041 | int ret; | |
6492cdf3 FL |
1042 | |
1043 | if (!skb) | |
e189062a | 1044 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1045 | |
1046 | if (!skb) { | |
1047 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1048 | return -1; | |
1049 | } | |
1050 | ||
1051 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK); | |
1052 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 0); | |
1053 | ||
1054 | return ret; | |
1055 | } | |
1056 | ||
1057 | ||
1058 | /** | |
1059 | * send_fin | |
1060 | */ | |
1a855fbf | 1061 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1062 | { |
1063 | int ret; | |
1064 | ||
1065 | /* if we didn't get a frame get one */ | |
1066 | if (!skb) | |
e189062a | 1067 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1068 | |
1069 | if (!skb) { | |
1070 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1071 | return -1; | |
1072 | } | |
1073 | ||
1074 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK | SET_FIN); | |
1075 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1076 | ||
1077 | return ret; | |
1078 | } | |
1079 | ||
1080 | ||
3c2d774c GS |
1081 | /** |
1082 | * find_node - find a cm node that matches the reference cm node | |
1083 | */ | |
1084 | static struct nes_cm_node *find_node(struct nes_cm_core *cm_core, | |
615eb715 | 1085 | u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr) |
3c2d774c GS |
1086 | { |
1087 | unsigned long flags; | |
3c2d774c GS |
1088 | struct list_head *hte; |
1089 | struct nes_cm_node *cm_node; | |
1090 | ||
3c2d774c GS |
1091 | /* get a handle on the hte */ |
1092 | hte = &cm_core->connected_nodes; | |
1093 | ||
3c2d774c GS |
1094 | /* walk list and find cm_node associated with this session ID */ |
1095 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
4e96a774 | 1096 | list_for_each_entry(cm_node, hte, list) { |
3c2d774c GS |
1097 | /* compare quad, return node handle if a match */ |
1098 | nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n", | |
615eb715 TN |
1099 | cm_node->loc_addr, cm_node->loc_port, |
1100 | loc_addr, loc_port, | |
1101 | cm_node->rem_addr, cm_node->rem_port, | |
1102 | rem_addr, rem_port); | |
3c2d774c | 1103 | if ((cm_node->loc_addr == loc_addr) && (cm_node->loc_port == loc_port) && |
615eb715 | 1104 | (cm_node->rem_addr == rem_addr) && (cm_node->rem_port == rem_port)) { |
3c2d774c GS |
1105 | add_ref_cm_node(cm_node); |
1106 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1107 | return cm_node; | |
1108 | } | |
1109 | } | |
1110 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1111 | ||
1112 | /* no owner node */ | |
1113 | return NULL; | |
1114 | } | |
1115 | ||
1116 | ||
1117 | /** | |
1118 | * find_listener - find a cm node listening on this addr-port pair | |
1119 | */ | |
1120 | static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core, | |
615eb715 | 1121 | nes_addr_t dst_addr, u16 dst_port, enum nes_cm_listener_state listener_state) |
3c2d774c GS |
1122 | { |
1123 | unsigned long flags; | |
3c2d774c GS |
1124 | struct nes_cm_listener *listen_node; |
1125 | ||
1126 | /* walk list and find cm_node associated with this session ID */ | |
1127 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
4e96a774 | 1128 | list_for_each_entry(listen_node, &cm_core->listen_list.list, list) { |
3c2d774c GS |
1129 | /* compare node pair, return node handle if a match */ |
1130 | if (((listen_node->loc_addr == dst_addr) || | |
615eb715 TN |
1131 | listen_node->loc_addr == 0x00000000) && |
1132 | (listen_node->loc_port == dst_port) && | |
1133 | (listener_state & listen_node->listener_state)) { | |
3c2d774c GS |
1134 | atomic_inc(&listen_node->ref_count); |
1135 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1136 | return listen_node; | |
1137 | } | |
1138 | } | |
1139 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1140 | ||
3c2d774c GS |
1141 | /* no listener */ |
1142 | return NULL; | |
1143 | } | |
1144 | ||
1145 | ||
1146 | /** | |
1147 | * add_hte_node - add a cm node to the hash table | |
1148 | */ | |
1149 | static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) | |
1150 | { | |
1151 | unsigned long flags; | |
3c2d774c GS |
1152 | struct list_head *hte; |
1153 | ||
1154 | if (!cm_node || !cm_core) | |
1155 | return -EINVAL; | |
1156 | ||
6492cdf3 | 1157 | nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n", |
615eb715 | 1158 | cm_node); |
3c2d774c | 1159 | |
3c2d774c GS |
1160 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
1161 | ||
1162 | /* get a handle on the hash table element (list head for this slot) */ | |
1163 | hte = &cm_core->connected_nodes; | |
1164 | list_add_tail(&cm_node->list, hte); | |
1165 | atomic_inc(&cm_core->ht_node_cnt); | |
1166 | ||
1167 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1168 | ||
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | ||
1173 | /** | |
1174 | * mini_cm_dec_refcnt_listen | |
1175 | */ | |
1176 | static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1177 | struct nes_cm_listener *listener, int free_hanging_nodes) |
3c2d774c | 1178 | { |
9d5ab133 FL |
1179 | int ret = -EINVAL; |
1180 | int err = 0; | |
3c2d774c | 1181 | unsigned long flags; |
6492cdf3 FL |
1182 | struct list_head *list_pos = NULL; |
1183 | struct list_head *list_temp = NULL; | |
1184 | struct nes_cm_node *cm_node = NULL; | |
879e5bd5 | 1185 | struct list_head reset_list; |
6492cdf3 FL |
1186 | |
1187 | nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, " | |
615eb715 TN |
1188 | "refcnt=%d\n", listener, free_hanging_nodes, |
1189 | atomic_read(&listener->ref_count)); | |
6492cdf3 | 1190 | /* free non-accelerated child nodes for this listener */ |
879e5bd5 | 1191 | INIT_LIST_HEAD(&reset_list); |
6492cdf3 FL |
1192 | if (free_hanging_nodes) { |
1193 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
1194 | list_for_each_safe(list_pos, list_temp, | |
879e5bd5 | 1195 | &g_cm_core->connected_nodes) { |
6492cdf3 | 1196 | cm_node = container_of(list_pos, struct nes_cm_node, |
615eb715 | 1197 | list); |
6492cdf3 | 1198 | if ((cm_node->listener == listener) && |
879e5bd5 FL |
1199 | (!cm_node->accelerated)) { |
1200 | add_ref_cm_node(cm_node); | |
1201 | list_add(&cm_node->reset_entry, &reset_list); | |
6492cdf3 FL |
1202 | } |
1203 | } | |
1204 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1205 | } | |
879e5bd5 FL |
1206 | |
1207 | list_for_each_safe(list_pos, list_temp, &reset_list) { | |
1208 | cm_node = container_of(list_pos, struct nes_cm_node, | |
615eb715 | 1209 | reset_entry); |
9d5ab133 FL |
1210 | { |
1211 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
c5a7d489 | 1212 | enum nes_cm_node_state old_state; |
9d5ab133 FL |
1213 | if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) { |
1214 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1215 | } else { | |
1216 | if (!loopback) { | |
1217 | cleanup_retrans_entry(cm_node); | |
1218 | err = send_reset(cm_node, NULL); | |
1219 | if (err) { | |
1220 | cm_node->state = | |
615eb715 | 1221 | NES_CM_STATE_CLOSED; |
9d5ab133 FL |
1222 | WARN_ON(1); |
1223 | } else { | |
c5a7d489 FL |
1224 | old_state = cm_node->state; |
1225 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; | |
1226 | if (old_state != NES_CM_STATE_MPAREQ_RCVD) | |
1227 | rem_ref_cm_node( | |
1228 | cm_node->cm_core, | |
1229 | cm_node); | |
9d5ab133 FL |
1230 | } |
1231 | } else { | |
1232 | struct nes_cm_event event; | |
1233 | ||
1234 | event.cm_node = loopback; | |
1235 | event.cm_info.rem_addr = | |
1236 | loopback->rem_addr; | |
1237 | event.cm_info.loc_addr = | |
1238 | loopback->loc_addr; | |
1239 | event.cm_info.rem_port = | |
1240 | loopback->rem_port; | |
1241 | event.cm_info.loc_port = | |
1242 | loopback->loc_port; | |
1243 | event.cm_info.cm_id = loopback->cm_id; | |
43093b94 FL |
1244 | add_ref_cm_node(loopback); |
1245 | loopback->state = NES_CM_STATE_CLOSED; | |
9d5ab133 | 1246 | cm_event_connect_error(&event); |
c5a7d489 | 1247 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; |
9d5ab133 | 1248 | |
9d5ab133 FL |
1249 | rem_ref_cm_node(cm_node->cm_core, |
1250 | cm_node); | |
1251 | ||
1252 | } | |
1253 | } | |
1254 | } | |
879e5bd5 FL |
1255 | } |
1256 | ||
3c2d774c GS |
1257 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
1258 | if (!atomic_dec_return(&listener->ref_count)) { | |
1259 | list_del(&listener->list); | |
1260 | ||
1261 | /* decrement our listen node count */ | |
1262 | atomic_dec(&cm_core->listen_node_cnt); | |
1263 | ||
1264 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1265 | ||
615eb715 | 1266 | if (listener->nesvnic) |
3c2d774c | 1267 | nes_manage_apbvt(listener->nesvnic, listener->loc_port, |
615eb715 | 1268 | PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn), NES_MANAGE_APBVT_DEL); |
3c2d774c GS |
1269 | |
1270 | nes_debug(NES_DBG_CM, "destroying listener (%p)\n", listener); | |
1271 | ||
1272 | kfree(listener); | |
a2e9c384 | 1273 | listener = NULL; |
3c2d774c | 1274 | ret = 0; |
6e10d2e4 | 1275 | atomic_inc(&cm_listens_destroyed); |
3c2d774c GS |
1276 | } else { |
1277 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1278 | } | |
1279 | if (listener) { | |
1280 | if (atomic_read(&listener->pend_accepts_cnt) > 0) | |
1281 | nes_debug(NES_DBG_CM, "destroying listener (%p)" | |
615eb715 TN |
1282 | " with non-zero pending accepts=%u\n", |
1283 | listener, atomic_read(&listener->pend_accepts_cnt)); | |
3c2d774c GS |
1284 | } |
1285 | ||
1286 | return ret; | |
1287 | } | |
1288 | ||
1289 | ||
1290 | /** | |
1291 | * mini_cm_del_listen | |
1292 | */ | |
1293 | static int mini_cm_del_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1294 | struct nes_cm_listener *listener) |
3c2d774c GS |
1295 | { |
1296 | listener->listener_state = NES_CM_LISTENER_PASSIVE_STATE; | |
1297 | listener->cm_id = NULL; /* going to be destroyed pretty soon */ | |
1298 | return mini_cm_dec_refcnt_listen(cm_core, listener, 1); | |
1299 | } | |
1300 | ||
1301 | ||
1302 | /** | |
1303 | * mini_cm_accelerated | |
1304 | */ | |
1305 | static inline int mini_cm_accelerated(struct nes_cm_core *cm_core, | |
615eb715 | 1306 | struct nes_cm_node *cm_node) |
3c2d774c | 1307 | { |
3c2d774c GS |
1308 | cm_node->accelerated = 1; |
1309 | ||
1310 | if (cm_node->accept_pend) { | |
1311 | BUG_ON(!cm_node->listener); | |
1312 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
9d5ab133 | 1313 | cm_node->accept_pend = 0; |
3c2d774c GS |
1314 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); |
1315 | } | |
1316 | ||
00ad255d TN |
1317 | if (!timer_pending(&cm_core->tcp_timer)) |
1318 | mod_timer(&cm_core->tcp_timer, (jiffies + NES_SHORT_TIME)); | |
3c2d774c GS |
1319 | |
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | ||
1324 | /** | |
7191a0a1 | 1325 | * nes_addr_resolve_neigh |
3c2d774c | 1326 | */ |
7a576dfd | 1327 | static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpindex) |
3c2d774c GS |
1328 | { |
1329 | struct rtable *rt; | |
7191a0a1 | 1330 | struct neighbour *neigh; |
7a576dfd | 1331 | int rc = arpindex; |
2a4c97ea | 1332 | struct net_device *netdev; |
7a576dfd | 1333 | struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter; |
3c2d774c | 1334 | |
78fbfd8a | 1335 | rt = ip_route_output(&init_net, htonl(dst_ip), 0, 0, 0); |
b23dd4fe | 1336 | if (IS_ERR(rt)) { |
9d5ab133 | 1337 | printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n", |
615eb715 | 1338 | __func__, dst_ip); |
7191a0a1 | 1339 | return rc; |
3c2d774c GS |
1340 | } |
1341 | ||
cf55bb24 | 1342 | if (netif_is_bond_slave(nesvnic->netdev)) |
7f6e7101 | 1343 | netdev = netdev_master_upper_dev_get(nesvnic->netdev); |
2a4c97ea MS |
1344 | else |
1345 | netdev = nesvnic->netdev; | |
1346 | ||
ef3d0c4a | 1347 | neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev); |
e55684fa | 1348 | |
40e2bb58 | 1349 | rcu_read_lock(); |
7191a0a1 BS |
1350 | if (neigh) { |
1351 | if (neigh->nud_state & NUD_VALID) { | |
1352 | nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X" | |
e174961c JB |
1353 | " is %pM, Gateway is 0x%08X \n", dst_ip, |
1354 | neigh->ha, ntohl(rt->rt_gateway)); | |
7a576dfd FL |
1355 | |
1356 | if (arpindex >= 0) { | |
1357 | if (!memcmp(nesadapter->arp_table[arpindex].mac_addr, | |
615eb715 | 1358 | neigh->ha, ETH_ALEN)) { |
7a576dfd | 1359 | /* Mac address same as in nes_arp_table */ |
e55684fa | 1360 | goto out; |
7a576dfd FL |
1361 | } |
1362 | ||
1363 | nes_manage_arp_cache(nesvnic->netdev, | |
615eb715 TN |
1364 | nesadapter->arp_table[arpindex].mac_addr, |
1365 | dst_ip, NES_ARP_DELETE); | |
7a576dfd FL |
1366 | } |
1367 | ||
7191a0a1 BS |
1368 | nes_manage_arp_cache(nesvnic->netdev, neigh->ha, |
1369 | dst_ip, NES_ARP_ADD); | |
1370 | rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL, | |
1371 | NES_ARP_RESOLVE); | |
40e2bb58 DM |
1372 | } else { |
1373 | neigh_event_send(neigh, NULL); | |
7191a0a1 | 1374 | } |
580da35a | 1375 | } |
e55684fa | 1376 | out: |
40e2bb58 | 1377 | rcu_read_unlock(); |
e55684fa DM |
1378 | |
1379 | if (neigh) | |
1380 | neigh_release(neigh); | |
1381 | ||
3c2d774c | 1382 | ip_rt_put(rt); |
7191a0a1 | 1383 | return rc; |
3c2d774c GS |
1384 | } |
1385 | ||
3c2d774c GS |
1386 | /** |
1387 | * make_cm_node - create a new instance of a cm node | |
1388 | */ | |
1389 | static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, | |
615eb715 TN |
1390 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info, |
1391 | struct nes_cm_listener *listener) | |
3c2d774c GS |
1392 | { |
1393 | struct nes_cm_node *cm_node; | |
1394 | struct timespec ts; | |
7a576dfd | 1395 | int oldarpindex = 0; |
3c2d774c GS |
1396 | int arpindex = 0; |
1397 | struct nes_device *nesdev; | |
1398 | struct nes_adapter *nesadapter; | |
1399 | ||
1400 | /* create an hte and cm_node for this instance */ | |
1401 | cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC); | |
1402 | if (!cm_node) | |
1403 | return NULL; | |
1404 | ||
1405 | /* set our node specific transport info */ | |
1406 | cm_node->loc_addr = cm_info->loc_addr; | |
1407 | cm_node->rem_addr = cm_info->rem_addr; | |
1408 | cm_node->loc_port = cm_info->loc_port; | |
1409 | cm_node->rem_port = cm_info->rem_port; | |
615eb715 TN |
1410 | |
1411 | cm_node->mpa_frame_rev = mpa_version; | |
1412 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; | |
1413 | cm_node->ird_size = IETF_NO_IRD_ORD; | |
1414 | cm_node->ord_size = IETF_NO_IRD_ORD; | |
1415 | ||
63779436 HH |
1416 | nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n", |
1417 | &cm_node->loc_addr, cm_node->loc_port, | |
1418 | &cm_node->rem_addr, cm_node->rem_port); | |
3c2d774c GS |
1419 | cm_node->listener = listener; |
1420 | cm_node->netdev = nesvnic->netdev; | |
1421 | cm_node->cm_id = cm_info->cm_id; | |
1422 | memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN); | |
1423 | ||
6492cdf3 | 1424 | nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener, |
615eb715 | 1425 | cm_node->cm_id); |
3c2d774c | 1426 | |
3c2d774c | 1427 | spin_lock_init(&cm_node->retrans_list_lock); |
3c2d774c GS |
1428 | |
1429 | cm_node->loopbackpartner = NULL; | |
1430 | atomic_set(&cm_node->ref_count, 1); | |
1431 | /* associate our parent CM core */ | |
1432 | cm_node->cm_core = cm_core; | |
1433 | cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID; | |
1434 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
1435 | cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >> | |
615eb715 | 1436 | NES_CM_DEFAULT_RCV_WND_SCALE; |
3c2d774c GS |
1437 | ts = current_kernel_time(); |
1438 | cm_node->tcp_cntxt.loc_seq_num = htonl(ts.tv_nsec); | |
1439 | cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) - | |
615eb715 | 1440 | sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN; |
3c2d774c GS |
1441 | cm_node->tcp_cntxt.rcv_nxt = 0; |
1442 | /* get a unique session ID , add thread_id to an upcounter to handle race */ | |
1443 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c GS |
1444 | cm_node->conn_type = cm_info->conn_type; |
1445 | cm_node->apbvt_set = 0; | |
1446 | cm_node->accept_pend = 0; | |
1447 | ||
1448 | cm_node->nesvnic = nesvnic; | |
1449 | /* get some device handles, for arp lookup */ | |
1450 | nesdev = nesvnic->nesdev; | |
1451 | nesadapter = nesdev->nesadapter; | |
1452 | ||
1453 | cm_node->loopbackpartner = NULL; | |
7a576dfd | 1454 | |
3c2d774c | 1455 | /* get the mac addr for the remote node */ |
ef3d0c4a TN |
1456 | oldarpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE); |
1457 | arpindex = nes_addr_resolve_neigh(nesvnic, cm_info->rem_addr, oldarpindex); | |
3c2d774c | 1458 | if (arpindex < 0) { |
7a576dfd FL |
1459 | kfree(cm_node); |
1460 | return NULL; | |
3c2d774c GS |
1461 | } |
1462 | ||
1463 | /* copy the mac addr to node context */ | |
1464 | memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN); | |
e174961c JB |
1465 | nes_debug(NES_DBG_CM, "Remote mac addr from arp table: %pM\n", |
1466 | cm_node->rem_mac); | |
3c2d774c GS |
1467 | |
1468 | add_hte_node(cm_core, cm_node); | |
1469 | atomic_inc(&cm_nodes_created); | |
1470 | ||
1471 | return cm_node; | |
1472 | } | |
1473 | ||
1474 | ||
1475 | /** | |
1476 | * add_ref_cm_node - destroy an instance of a cm node | |
1477 | */ | |
1478 | static int add_ref_cm_node(struct nes_cm_node *cm_node) | |
1479 | { | |
1480 | atomic_inc(&cm_node->ref_count); | |
1481 | return 0; | |
1482 | } | |
1483 | ||
1484 | ||
1485 | /** | |
1486 | * rem_ref_cm_node - destroy an instance of a cm node | |
1487 | */ | |
1488 | static int rem_ref_cm_node(struct nes_cm_core *cm_core, | |
615eb715 | 1489 | struct nes_cm_node *cm_node) |
3c2d774c | 1490 | { |
9d5ab133 | 1491 | unsigned long flags; |
3c2d774c GS |
1492 | struct nes_qp *nesqp; |
1493 | ||
1494 | if (!cm_node) | |
1495 | return -EINVAL; | |
1496 | ||
1497 | spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags); | |
1498 | if (atomic_dec_return(&cm_node->ref_count)) { | |
1499 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1500 | return 0; | |
1501 | } | |
1502 | list_del(&cm_node->list); | |
1503 | atomic_dec(&cm_core->ht_node_cnt); | |
1504 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1505 | ||
1506 | /* if the node is destroyed before connection was accelerated */ | |
1507 | if (!cm_node->accelerated && cm_node->accept_pend) { | |
1508 | BUG_ON(!cm_node->listener); | |
1509 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
1510 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); | |
1511 | } | |
9d5ab133 FL |
1512 | WARN_ON(cm_node->send_entry); |
1513 | if (cm_node->recv_entry) | |
1514 | handle_recv_entry(cm_node, 0); | |
3c2d774c GS |
1515 | if (cm_node->listener) { |
1516 | mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0); | |
1517 | } else { | |
1518 | if (cm_node->apbvt_set && cm_node->nesvnic) { | |
1519 | nes_manage_apbvt(cm_node->nesvnic, cm_node->loc_port, | |
615eb715 TN |
1520 | PCI_FUNC( |
1521 | cm_node->nesvnic->nesdev->pcidev->devfn), | |
1522 | NES_MANAGE_APBVT_DEL); | |
3c2d774c GS |
1523 | } |
1524 | } | |
1525 | ||
3c2d774c GS |
1526 | atomic_dec(&cm_core->node_cnt); |
1527 | atomic_inc(&cm_nodes_destroyed); | |
6492cdf3 FL |
1528 | nesqp = cm_node->nesqp; |
1529 | if (nesqp) { | |
1530 | nesqp->cm_node = NULL; | |
1531 | nes_rem_ref(&nesqp->ibqp); | |
1532 | cm_node->nesqp = NULL; | |
1533 | } | |
3c2d774c | 1534 | |
6492cdf3 | 1535 | kfree(cm_node); |
3c2d774c GS |
1536 | return 0; |
1537 | } | |
1538 | ||
3c2d774c GS |
1539 | /** |
1540 | * process_options | |
1541 | */ | |
6492cdf3 | 1542 | static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, |
615eb715 | 1543 | u32 optionsize, u32 syn_packet) |
3c2d774c GS |
1544 | { |
1545 | u32 tmp; | |
1546 | u32 offset = 0; | |
1547 | union all_known_options *all_options; | |
1548 | char got_mss_option = 0; | |
1549 | ||
1550 | while (offset < optionsize) { | |
1551 | all_options = (union all_known_options *)(optionsloc + offset); | |
1552 | switch (all_options->as_base.optionnum) { | |
6492cdf3 FL |
1553 | case OPTION_NUMBER_END: |
1554 | offset = optionsize; | |
1555 | break; | |
1556 | case OPTION_NUMBER_NONE: | |
1557 | offset += 1; | |
1558 | continue; | |
1559 | case OPTION_NUMBER_MSS: | |
1560 | nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d " | |
615eb715 TN |
1561 | "Size: %d\n", __func__, |
1562 | all_options->as_mss.length, offset, optionsize); | |
6492cdf3 FL |
1563 | got_mss_option = 1; |
1564 | if (all_options->as_mss.length != 4) { | |
1565 | return 1; | |
1566 | } else { | |
1567 | tmp = ntohs(all_options->as_mss.mss); | |
1568 | if (tmp > 0 && tmp < | |
615eb715 | 1569 | cm_node->tcp_cntxt.mss) |
6492cdf3 FL |
1570 | cm_node->tcp_cntxt.mss = tmp; |
1571 | } | |
1572 | break; | |
1573 | case OPTION_NUMBER_WINDOW_SCALE: | |
1574 | cm_node->tcp_cntxt.snd_wscale = | |
1575 | all_options->as_windowscale.shiftcount; | |
1576 | break; | |
6492cdf3 FL |
1577 | default: |
1578 | nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n", | |
615eb715 | 1579 | all_options->as_base.optionnum); |
6492cdf3 | 1580 | break; |
3c2d774c GS |
1581 | } |
1582 | offset += all_options->as_base.length; | |
1583 | } | |
1584 | if ((!got_mss_option) && (syn_packet)) | |
1585 | cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS; | |
1586 | return 0; | |
1587 | } | |
1588 | ||
6492cdf3 FL |
1589 | static void drop_packet(struct sk_buff *skb) |
1590 | { | |
1591 | atomic_inc(&cm_accel_dropped_pkts); | |
1592 | dev_kfree_skb_any(skb); | |
1593 | } | |
3c2d774c | 1594 | |
9d5ab133 | 1595 | static void handle_fin_pkt(struct nes_cm_node *cm_node) |
3c2d774c | 1596 | { |
6492cdf3 | 1597 | nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. " |
615eb715 TN |
1598 | "refcnt=%d\n", cm_node, cm_node->state, |
1599 | atomic_read(&cm_node->ref_count)); | |
6492cdf3 FL |
1600 | switch (cm_node->state) { |
1601 | case NES_CM_STATE_SYN_RCVD: | |
1602 | case NES_CM_STATE_SYN_SENT: | |
1603 | case NES_CM_STATE_ESTABLISHED: | |
9d5ab133 | 1604 | case NES_CM_STATE_MPAREJ_RCVD: |
109d67e4 FL |
1605 | cm_node->tcp_cntxt.rcv_nxt++; |
1606 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1607 | cm_node->state = NES_CM_STATE_LAST_ACK; |
9d5ab133 | 1608 | send_fin(cm_node, NULL); |
6492cdf3 | 1609 | break; |
b1190d3e FL |
1610 | case NES_CM_STATE_MPAREQ_SENT: |
1611 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
1612 | cm_node->tcp_cntxt.rcv_nxt++; | |
1613 | cleanup_retrans_entry(cm_node); | |
1614 | cm_node->state = NES_CM_STATE_CLOSED; | |
1615 | add_ref_cm_node(cm_node); | |
1616 | send_reset(cm_node, NULL); | |
1617 | break; | |
6492cdf3 | 1618 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1619 | cm_node->tcp_cntxt.rcv_nxt++; |
1620 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1621 | cm_node->state = NES_CM_STATE_CLOSING; |
9d5ab133 | 1622 | send_ack(cm_node, NULL); |
25985edc | 1623 | /* Wait for ACK as this is simultaneous close.. |
9d5ab133 FL |
1624 | * After we receive ACK, do not send anything.. |
1625 | * Just rm the node.. Done.. */ | |
6492cdf3 FL |
1626 | break; |
1627 | case NES_CM_STATE_FIN_WAIT2: | |
109d67e4 FL |
1628 | cm_node->tcp_cntxt.rcv_nxt++; |
1629 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1630 | cm_node->state = NES_CM_STATE_TIME_WAIT; |
9d5ab133 FL |
1631 | send_ack(cm_node, NULL); |
1632 | schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0); | |
1633 | break; | |
1634 | case NES_CM_STATE_TIME_WAIT: | |
109d67e4 FL |
1635 | cm_node->tcp_cntxt.rcv_nxt++; |
1636 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1637 | cm_node->state = NES_CM_STATE_CLOSED; |
9d5ab133 | 1638 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
6492cdf3 FL |
1639 | break; |
1640 | case NES_CM_STATE_TSA: | |
1641 | default: | |
1642 | nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n", | |
1643 | cm_node, cm_node->state); | |
6492cdf3 | 1644 | break; |
3c2d774c | 1645 | } |
6492cdf3 | 1646 | } |
3c2d774c | 1647 | |
3c2d774c | 1648 | |
6492cdf3 FL |
1649 | static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
1650 | struct tcphdr *tcph) | |
1651 | { | |
3c2d774c | 1652 | |
6492cdf3 FL |
1653 | int reset = 0; /* whether to send reset in case of err.. */ |
1654 | atomic_inc(&cm_resets_recvd); | |
1655 | nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." | |
1656 | " refcnt=%d\n", cm_node, cm_node->state, | |
1657 | atomic_read(&cm_node->ref_count)); | |
1658 | cleanup_retrans_entry(cm_node); | |
1659 | switch (cm_node->state) { | |
1660 | case NES_CM_STATE_SYN_SENT: | |
1661 | case NES_CM_STATE_MPAREQ_SENT: | |
1662 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
1663 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, | |
1664 | cm_node->listener, cm_node->state); | |
615eb715 TN |
1665 | switch (cm_node->mpa_frame_rev) { |
1666 | case IETF_MPA_V2: | |
1667 | cm_node->mpa_frame_rev = IETF_MPA_V1; | |
1668 | /* send a syn and goto syn sent state */ | |
1669 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
1670 | if (send_syn(cm_node, 0, NULL)) { | |
1671 | active_open_err(cm_node, skb, reset); | |
1672 | } | |
1673 | break; | |
1674 | case IETF_MPA_V1: | |
1675 | default: | |
1676 | active_open_err(cm_node, skb, reset); | |
1677 | break; | |
1678 | } | |
6492cdf3 | 1679 | break; |
183ecfa3 | 1680 | case NES_CM_STATE_MPAREQ_RCVD: |
4d8d6389 | 1681 | atomic_inc(&cm_node->passive_state); |
183ecfa3 FL |
1682 | dev_kfree_skb_any(skb); |
1683 | break; | |
6492cdf3 FL |
1684 | case NES_CM_STATE_ESTABLISHED: |
1685 | case NES_CM_STATE_SYN_RCVD: | |
1686 | case NES_CM_STATE_LISTENING: | |
1687 | nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__); | |
1688 | passive_open_err(cm_node, skb, reset); | |
1689 | break; | |
1690 | case NES_CM_STATE_TSA: | |
183ecfa3 FL |
1691 | active_open_err(cm_node, skb, reset); |
1692 | break; | |
1693 | case NES_CM_STATE_CLOSED: | |
183ecfa3 FL |
1694 | drop_packet(skb); |
1695 | break; | |
dae58728 | 1696 | case NES_CM_STATE_FIN_WAIT2: |
68237a0f | 1697 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1698 | case NES_CM_STATE_LAST_ACK: |
1699 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 | 1700 | case NES_CM_STATE_TIME_WAIT: |
9d5ab133 FL |
1701 | cm_node->state = NES_CM_STATE_CLOSED; |
1702 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1703 | drop_packet(skb); | |
1704 | break; | |
6492cdf3 | 1705 | default: |
183ecfa3 | 1706 | drop_packet(skb); |
6492cdf3 FL |
1707 | break; |
1708 | } | |
1709 | } | |
3c2d774c | 1710 | |
9d5ab133 FL |
1711 | |
1712 | static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
6492cdf3 | 1713 | { |
615eb715 | 1714 | int ret = 0; |
6492cdf3 FL |
1715 | int datasize = skb->len; |
1716 | u8 *dataloc = skb->data; | |
9d5ab133 FL |
1717 | |
1718 | enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN; | |
615eb715 TN |
1719 | u32 res_type; |
1720 | ||
9d5ab133 FL |
1721 | ret = parse_mpa(cm_node, dataloc, &res_type, datasize); |
1722 | if (ret) { | |
6492cdf3 | 1723 | nes_debug(NES_DBG_CM, "didn't like MPA Request\n"); |
9d5ab133 | 1724 | if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) { |
6492cdf3 | 1725 | nes_debug(NES_DBG_CM, "%s[%u] create abort for " |
615eb715 TN |
1726 | "cm_node=%p listener=%p state=%d\n", __func__, |
1727 | __LINE__, cm_node, cm_node->listener, | |
1728 | cm_node->state); | |
6492cdf3 FL |
1729 | active_open_err(cm_node, skb, 1); |
1730 | } else { | |
1731 | passive_open_err(cm_node, skb, 1); | |
3c2d774c | 1732 | } |
9d5ab133 FL |
1733 | return; |
1734 | } | |
1735 | ||
1736 | switch (cm_node->state) { | |
1737 | case NES_CM_STATE_ESTABLISHED: | |
615eb715 | 1738 | if (res_type == NES_MPA_REQUEST_REJECT) |
9d5ab133 | 1739 | /*BIG problem as we are receiving the MPA.. So should |
615eb715 TN |
1740 | * not be REJECT.. This is Passive Open.. We can |
1741 | * only receive it Reject for Active Open...*/ | |
9d5ab133 | 1742 | WARN_ON(1); |
9d5ab133 FL |
1743 | cm_node->state = NES_CM_STATE_MPAREQ_RCVD; |
1744 | type = NES_CM_EVENT_MPA_REQ; | |
1745 | atomic_set(&cm_node->passive_state, | |
615eb715 | 1746 | NES_PASSIVE_STATE_INDICATED); |
9d5ab133 FL |
1747 | break; |
1748 | case NES_CM_STATE_MPAREQ_SENT: | |
109d67e4 | 1749 | cleanup_retrans_entry(cm_node); |
9d5ab133 FL |
1750 | if (res_type == NES_MPA_REQUEST_REJECT) { |
1751 | type = NES_CM_EVENT_MPA_REJECT; | |
1752 | cm_node->state = NES_CM_STATE_MPAREJ_RCVD; | |
1753 | } else { | |
1754 | type = NES_CM_EVENT_CONNECTED; | |
6492cdf3 | 1755 | cm_node->state = NES_CM_STATE_TSA; |
9d5ab133 | 1756 | } |
6492cdf3 | 1757 | |
9d5ab133 FL |
1758 | break; |
1759 | default: | |
1760 | WARN_ON(1); | |
1761 | break; | |
6492cdf3 | 1762 | } |
9d5ab133 FL |
1763 | dev_kfree_skb_any(skb); |
1764 | create_event(cm_node, type); | |
6492cdf3 FL |
1765 | } |
1766 | ||
1767 | static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
1768 | { | |
1769 | switch (cm_node->state) { | |
1770 | case NES_CM_STATE_SYN_SENT: | |
1771 | case NES_CM_STATE_MPAREQ_SENT: | |
1772 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1773 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1774 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1775 | active_open_err(cm_node, skb, 1); |
1776 | break; | |
1777 | case NES_CM_STATE_ESTABLISHED: | |
1778 | case NES_CM_STATE_SYN_RCVD: | |
1779 | passive_open_err(cm_node, skb, 1); | |
1780 | break; | |
1781 | case NES_CM_STATE_TSA: | |
1782 | default: | |
1783 | drop_packet(skb); | |
3c2d774c | 1784 | } |
6492cdf3 FL |
1785 | } |
1786 | ||
1787 | static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1788 | struct sk_buff *skb) |
6492cdf3 FL |
1789 | { |
1790 | int err; | |
1791 | ||
615eb715 | 1792 | err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num)) ? 0 : 1; |
6492cdf3 FL |
1793 | if (err) |
1794 | active_open_err(cm_node, skb, 1); | |
1795 | ||
1796 | return err; | |
1797 | } | |
1798 | ||
1799 | static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1800 | struct sk_buff *skb) |
6492cdf3 FL |
1801 | { |
1802 | int err = 0; | |
1803 | u32 seq; | |
1804 | u32 ack_seq; | |
1805 | u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num; | |
1806 | u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; | |
1807 | u32 rcv_wnd; | |
615eb715 | 1808 | |
6492cdf3 FL |
1809 | seq = ntohl(tcph->seq); |
1810 | ack_seq = ntohl(tcph->ack_seq); | |
1811 | rcv_wnd = cm_node->tcp_cntxt.rcv_wnd; | |
1812 | if (ack_seq != loc_seq_num) | |
1813 | err = 1; | |
615eb715 | 1814 | else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd))) |
6492cdf3 FL |
1815 | err = 1; |
1816 | if (err) { | |
1817 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1818 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1819 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1820 | indicate_pkt_err(cm_node, skb); |
1821 | nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X " | |
615eb715 TN |
1822 | "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt, |
1823 | rcv_wnd); | |
6492cdf3 FL |
1824 | } |
1825 | return err; | |
1826 | } | |
1827 | ||
1828 | /* | |
1829 | * handle_syn_pkt() is for Passive node. The syn packet is received when a node | |
1830 | * is created with a listener or it may comein as rexmitted packet which in | |
1831 | * that case will be just dropped. | |
1832 | */ | |
6492cdf3 | 1833 | static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 1834 | struct tcphdr *tcph) |
6492cdf3 FL |
1835 | { |
1836 | int ret; | |
1837 | u32 inc_sequence; | |
1838 | int optionsize; | |
3c2d774c GS |
1839 | |
1840 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 1841 | skb_trim(skb, 0); |
6492cdf3 | 1842 | inc_sequence = ntohl(tcph->seq); |
3c2d774c | 1843 | |
6492cdf3 FL |
1844 | switch (cm_node->state) { |
1845 | case NES_CM_STATE_SYN_SENT: | |
1846 | case NES_CM_STATE_MPAREQ_SENT: | |
1847 | /* Rcvd syn on active open connection*/ | |
1848 | active_open_err(cm_node, skb, 1); | |
1849 | break; | |
1850 | case NES_CM_STATE_LISTENING: | |
1851 | /* Passive OPEN */ | |
6492cdf3 | 1852 | if (atomic_read(&cm_node->listener->pend_accepts_cnt) > |
615eb715 | 1853 | cm_node->listener->backlog) { |
6492cdf3 | 1854 | nes_debug(NES_DBG_CM, "drop syn due to backlog " |
615eb715 | 1855 | "pressure \n"); |
6492cdf3 FL |
1856 | cm_backlog_drops++; |
1857 | passive_open_err(cm_node, skb, 0); | |
1858 | break; | |
1859 | } | |
1860 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, | |
615eb715 | 1861 | 1); |
6492cdf3 FL |
1862 | if (ret) { |
1863 | passive_open_err(cm_node, skb, 0); | |
1864 | /* drop pkt */ | |
1865 | break; | |
1866 | } | |
1867 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
1868 | BUG_ON(cm_node->send_entry); | |
9d5ab133 FL |
1869 | cm_node->accept_pend = 1; |
1870 | atomic_inc(&cm_node->listener->pend_accepts_cnt); | |
1871 | ||
6492cdf3 FL |
1872 | cm_node->state = NES_CM_STATE_SYN_RCVD; |
1873 | send_syn(cm_node, 1, skb); | |
1874 | break; | |
abb77256 FL |
1875 | case NES_CM_STATE_CLOSED: |
1876 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 1877 | add_ref_cm_node(cm_node); |
abb77256 FL |
1878 | send_reset(cm_node, skb); |
1879 | break; | |
6492cdf3 FL |
1880 | case NES_CM_STATE_TSA: |
1881 | case NES_CM_STATE_ESTABLISHED: | |
1882 | case NES_CM_STATE_FIN_WAIT1: | |
1883 | case NES_CM_STATE_FIN_WAIT2: | |
1884 | case NES_CM_STATE_MPAREQ_RCVD: | |
1885 | case NES_CM_STATE_LAST_ACK: | |
1886 | case NES_CM_STATE_CLOSING: | |
1887 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
1888 | default: |
1889 | drop_packet(skb); | |
1890 | break; | |
1891 | } | |
1892 | } | |
1893 | ||
1894 | static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 1895 | struct tcphdr *tcph) |
6492cdf3 | 1896 | { |
6492cdf3 FL |
1897 | int ret; |
1898 | u32 inc_sequence; | |
1899 | int optionsize; | |
1900 | ||
1901 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 1902 | skb_trim(skb, 0); |
6492cdf3 FL |
1903 | inc_sequence = ntohl(tcph->seq); |
1904 | switch (cm_node->state) { | |
1905 | case NES_CM_STATE_SYN_SENT: | |
9d5ab133 | 1906 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
1907 | /* active open */ |
1908 | if (check_syn(cm_node, tcph, skb)) | |
1909 | return; | |
1910 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
1911 | /* setup options */ | |
1912 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0); | |
1913 | if (ret) { | |
1914 | nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n", | |
615eb715 | 1915 | cm_node); |
6492cdf3 FL |
1916 | break; |
1917 | } | |
1918 | cleanup_retrans_entry(cm_node); | |
1919 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
1920 | send_mpa_request(cm_node, skb); | |
1921 | cm_node->state = NES_CM_STATE_MPAREQ_SENT; | |
1922 | break; | |
1923 | case NES_CM_STATE_MPAREQ_RCVD: | |
1924 | /* passive open, so should not be here */ | |
1925 | passive_open_err(cm_node, skb, 1); | |
1926 | break; | |
abb77256 | 1927 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
1928 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
1929 | cleanup_retrans_entry(cm_node); | |
1930 | cm_node->state = NES_CM_STATE_CLOSED; | |
1931 | send_reset(cm_node, skb); | |
1932 | break; | |
abb77256 FL |
1933 | case NES_CM_STATE_CLOSED: |
1934 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); | |
1935 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 1936 | add_ref_cm_node(cm_node); |
abb77256 FL |
1937 | send_reset(cm_node, skb); |
1938 | break; | |
6492cdf3 FL |
1939 | case NES_CM_STATE_ESTABLISHED: |
1940 | case NES_CM_STATE_FIN_WAIT1: | |
1941 | case NES_CM_STATE_FIN_WAIT2: | |
1942 | case NES_CM_STATE_LAST_ACK: | |
1943 | case NES_CM_STATE_TSA: | |
1944 | case NES_CM_STATE_CLOSING: | |
1945 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
1946 | case NES_CM_STATE_MPAREQ_SENT: |
1947 | default: | |
1948 | drop_packet(skb); | |
1949 | break; | |
1950 | } | |
1951 | } | |
3c2d774c | 1952 | |
109d67e4 | 1953 | static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 1954 | struct tcphdr *tcph) |
6492cdf3 FL |
1955 | { |
1956 | int datasize = 0; | |
1957 | u32 inc_sequence; | |
109d67e4 | 1958 | int ret = 0; |
abb77256 | 1959 | int optionsize; |
615eb715 | 1960 | |
abb77256 | 1961 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
abb77256 | 1962 | |
6492cdf3 | 1963 | if (check_seq(cm_node, tcph, skb)) |
109d67e4 | 1964 | return -EINVAL; |
6492cdf3 FL |
1965 | |
1966 | skb_pull(skb, tcph->doff << 2); | |
3c2d774c | 1967 | inc_sequence = ntohl(tcph->seq); |
6492cdf3 | 1968 | datasize = skb->len; |
6492cdf3 FL |
1969 | switch (cm_node->state) { |
1970 | case NES_CM_STATE_SYN_RCVD: | |
1971 | /* Passive OPEN */ | |
109d67e4 | 1972 | cleanup_retrans_entry(cm_node); |
abb77256 FL |
1973 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1); |
1974 | if (ret) | |
1975 | break; | |
6492cdf3 FL |
1976 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
1977 | cm_node->state = NES_CM_STATE_ESTABLISHED; | |
1978 | if (datasize) { | |
1979 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 1980 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 1981 | } else { /* rcvd ACK only */ |
6492cdf3 | 1982 | dev_kfree_skb_any(skb); |
615eb715 | 1983 | } |
6492cdf3 FL |
1984 | break; |
1985 | case NES_CM_STATE_ESTABLISHED: | |
1986 | /* Passive OPEN */ | |
9d5ab133 | 1987 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
1988 | if (datasize) { |
1989 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 1990 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 1991 | } else { |
6492cdf3 | 1992 | drop_packet(skb); |
615eb715 | 1993 | } |
6492cdf3 FL |
1994 | break; |
1995 | case NES_CM_STATE_MPAREQ_SENT: | |
1996 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
1997 | if (datasize) { | |
1998 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 1999 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2000 | } else { /* Could be just an ack pkt.. */ |
6492cdf3 | 2001 | dev_kfree_skb_any(skb); |
615eb715 | 2002 | } |
6492cdf3 | 2003 | break; |
abb77256 | 2004 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
2005 | cleanup_retrans_entry(cm_node); |
2006 | cm_node->state = NES_CM_STATE_CLOSED; | |
2007 | send_reset(cm_node, skb); | |
2008 | break; | |
abb77256 FL |
2009 | case NES_CM_STATE_CLOSED: |
2010 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2011 | add_ref_cm_node(cm_node); |
abb77256 FL |
2012 | send_reset(cm_node, skb); |
2013 | break; | |
9d5ab133 | 2014 | case NES_CM_STATE_LAST_ACK: |
109d67e4 | 2015 | case NES_CM_STATE_CLOSING: |
9d5ab133 FL |
2016 | cleanup_retrans_entry(cm_node); |
2017 | cm_node->state = NES_CM_STATE_CLOSED; | |
2018 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 FL |
2019 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2020 | drop_packet(skb); | |
2021 | break; | |
6492cdf3 | 2022 | case NES_CM_STATE_FIN_WAIT1: |
9d5ab133 FL |
2023 | cleanup_retrans_entry(cm_node); |
2024 | drop_packet(skb); | |
2025 | cm_node->state = NES_CM_STATE_FIN_WAIT2; | |
2026 | break; | |
6492cdf3 FL |
2027 | case NES_CM_STATE_SYN_SENT: |
2028 | case NES_CM_STATE_FIN_WAIT2: | |
2029 | case NES_CM_STATE_TSA: | |
6492cdf3 | 2030 | case NES_CM_STATE_MPAREQ_RCVD: |
6492cdf3 FL |
2031 | case NES_CM_STATE_UNKNOWN: |
2032 | default: | |
109d67e4 | 2033 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2034 | drop_packet(skb); |
2035 | break; | |
3c2d774c | 2036 | } |
109d67e4 | 2037 | return ret; |
6492cdf3 | 2038 | } |
3c2d774c | 2039 | |
3c2d774c GS |
2040 | |
2041 | ||
6492cdf3 | 2042 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, |
615eb715 | 2043 | struct sk_buff *skb, int optionsize, int passive) |
6492cdf3 FL |
2044 | { |
2045 | u8 *optionsloc = (u8 *)&tcph[1]; | |
615eb715 | 2046 | |
3c2d774c | 2047 | if (optionsize) { |
6492cdf3 | 2048 | if (process_options(cm_node, optionsloc, optionsize, |
615eb715 | 2049 | (u32)tcph->syn)) { |
6492cdf3 | 2050 | nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n", |
615eb715 | 2051 | __func__, cm_node); |
6492cdf3 | 2052 | if (passive) |
abb77256 | 2053 | passive_open_err(cm_node, skb, 1); |
6492cdf3 | 2054 | else |
abb77256 | 2055 | active_open_err(cm_node, skb, 1); |
6492cdf3 | 2056 | return 1; |
3c2d774c | 2057 | } |
6492cdf3 | 2058 | } |
3c2d774c GS |
2059 | |
2060 | cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) << | |
615eb715 | 2061 | cm_node->tcp_cntxt.snd_wscale; |
3c2d774c | 2062 | |
6492cdf3 | 2063 | if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd) |
3c2d774c | 2064 | cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd; |
6492cdf3 FL |
2065 | return 0; |
2066 | } | |
3c2d774c | 2067 | |
6492cdf3 FL |
2068 | /* |
2069 | * active_open_err() will send reset() if flag set.. | |
2070 | * It will also send ABORT event. | |
2071 | */ | |
6492cdf3 | 2072 | static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2073 | int reset) |
6492cdf3 FL |
2074 | { |
2075 | cleanup_retrans_entry(cm_node); | |
2076 | if (reset) { | |
2077 | nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, " | |
615eb715 | 2078 | "state=%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2079 | add_ref_cm_node(cm_node); |
2080 | send_reset(cm_node, skb); | |
615eb715 | 2081 | } else { |
6492cdf3 | 2082 | dev_kfree_skb_any(skb); |
615eb715 | 2083 | } |
3c2d774c | 2084 | |
6492cdf3 FL |
2085 | cm_node->state = NES_CM_STATE_CLOSED; |
2086 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2087 | } | |
3c2d774c | 2088 | |
6492cdf3 FL |
2089 | /* |
2090 | * passive_open_err() will either do a reset() or will free up the skb and | |
2091 | * remove the cm_node. | |
2092 | */ | |
6492cdf3 | 2093 | static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2094 | int reset) |
6492cdf3 FL |
2095 | { |
2096 | cleanup_retrans_entry(cm_node); | |
2097 | cm_node->state = NES_CM_STATE_CLOSED; | |
2098 | if (reset) { | |
2099 | nes_debug(NES_DBG_CM, "passive_open_err sending RST for " | |
615eb715 | 2100 | "cm_node=%p state =%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2101 | send_reset(cm_node, skb); |
2102 | } else { | |
2103 | dev_kfree_skb_any(skb); | |
2104 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2105 | } |
6492cdf3 | 2106 | } |
3c2d774c | 2107 | |
6492cdf3 FL |
2108 | /* |
2109 | * free_retrans_entry() routines assumes that the retrans_list_lock has | |
2110 | * been acquired before calling. | |
2111 | */ | |
2112 | static void free_retrans_entry(struct nes_cm_node *cm_node) | |
2113 | { | |
2114 | struct nes_timer_entry *send_entry; | |
615eb715 | 2115 | |
6492cdf3 FL |
2116 | send_entry = cm_node->send_entry; |
2117 | if (send_entry) { | |
2118 | cm_node->send_entry = NULL; | |
2119 | dev_kfree_skb_any(send_entry->skb); | |
2120 | kfree(send_entry); | |
2121 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2122 | } |
6492cdf3 | 2123 | } |
3c2d774c | 2124 | |
6492cdf3 FL |
2125 | static void cleanup_retrans_entry(struct nes_cm_node *cm_node) |
2126 | { | |
2127 | unsigned long flags; | |
3c2d774c | 2128 | |
6492cdf3 FL |
2129 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
2130 | free_retrans_entry(cm_node); | |
2131 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
3c2d774c GS |
2132 | } |
2133 | ||
6492cdf3 FL |
2134 | /** |
2135 | * process_packet | |
2136 | * Returns skb if to be freed, else it will return NULL if already used.. | |
2137 | */ | |
2138 | static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 2139 | struct nes_cm_core *cm_core) |
6492cdf3 | 2140 | { |
615eb715 | 2141 | enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN; |
6492cdf3 | 2142 | struct tcphdr *tcph = tcp_hdr(skb); |
615eb715 | 2143 | u32 fin_set = 0; |
109d67e4 | 2144 | int ret = 0; |
615eb715 | 2145 | |
6492cdf3 FL |
2146 | skb_pull(skb, ip_hdr(skb)->ihl << 2); |
2147 | ||
2148 | nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d " | |
615eb715 TN |
2149 | "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn, |
2150 | tcph->ack, tcph->rst, tcph->fin); | |
6492cdf3 | 2151 | |
615eb715 | 2152 | if (tcph->rst) { |
6492cdf3 | 2153 | pkt_type = NES_PKT_TYPE_RST; |
615eb715 | 2154 | } else if (tcph->syn) { |
6492cdf3 FL |
2155 | pkt_type = NES_PKT_TYPE_SYN; |
2156 | if (tcph->ack) | |
2157 | pkt_type = NES_PKT_TYPE_SYNACK; | |
615eb715 | 2158 | } else if (tcph->ack) { |
6492cdf3 | 2159 | pkt_type = NES_PKT_TYPE_ACK; |
615eb715 | 2160 | } |
9d5ab133 FL |
2161 | if (tcph->fin) |
2162 | fin_set = 1; | |
6492cdf3 FL |
2163 | |
2164 | switch (pkt_type) { | |
2165 | case NES_PKT_TYPE_SYN: | |
2166 | handle_syn_pkt(cm_node, skb, tcph); | |
2167 | break; | |
2168 | case NES_PKT_TYPE_SYNACK: | |
2169 | handle_synack_pkt(cm_node, skb, tcph); | |
2170 | break; | |
2171 | case NES_PKT_TYPE_ACK: | |
109d67e4 FL |
2172 | ret = handle_ack_pkt(cm_node, skb, tcph); |
2173 | if (fin_set && !ret) | |
9d5ab133 | 2174 | handle_fin_pkt(cm_node); |
6492cdf3 FL |
2175 | break; |
2176 | case NES_PKT_TYPE_RST: | |
2177 | handle_rst_pkt(cm_node, skb, tcph); | |
2178 | break; | |
6492cdf3 | 2179 | default: |
109d67e4 | 2180 | if ((fin_set) && (!check_seq(cm_node, tcph, skb))) |
9d5ab133 | 2181 | handle_fin_pkt(cm_node); |
109d67e4 | 2182 | drop_packet(skb); |
6492cdf3 FL |
2183 | break; |
2184 | } | |
2185 | } | |
3c2d774c GS |
2186 | |
2187 | /** | |
2188 | * mini_cm_listen - create a listen node with params | |
2189 | */ | |
2190 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, | |
615eb715 | 2191 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info) |
3c2d774c GS |
2192 | { |
2193 | struct nes_cm_listener *listener; | |
2194 | unsigned long flags; | |
2195 | ||
2196 | nes_debug(NES_DBG_CM, "Search for 0x%08x : 0x%04x\n", | |
615eb715 | 2197 | cm_info->loc_addr, cm_info->loc_port); |
3c2d774c GS |
2198 | |
2199 | /* cannot have multiple matching listeners */ | |
2200 | listener = find_listener(cm_core, htonl(cm_info->loc_addr), | |
615eb715 | 2201 | htons(cm_info->loc_port), NES_CM_LISTENER_EITHER_STATE); |
3c2d774c GS |
2202 | if (listener && listener->listener_state == NES_CM_LISTENER_ACTIVE_STATE) { |
2203 | /* find automatically incs ref count ??? */ | |
2204 | atomic_dec(&listener->ref_count); | |
2205 | nes_debug(NES_DBG_CM, "Not creating listener since it already exists\n"); | |
2206 | return NULL; | |
2207 | } | |
2208 | ||
2209 | if (!listener) { | |
2210 | /* create a CM listen node (1/2 node to compare incoming traffic to) */ | |
2211 | listener = kzalloc(sizeof(*listener), GFP_ATOMIC); | |
2212 | if (!listener) { | |
2213 | nes_debug(NES_DBG_CM, "Not creating listener memory allocation failed\n"); | |
2214 | return NULL; | |
2215 | } | |
2216 | ||
3c2d774c GS |
2217 | listener->loc_addr = htonl(cm_info->loc_addr); |
2218 | listener->loc_port = htons(cm_info->loc_port); | |
2219 | listener->reused_node = 0; | |
2220 | ||
2221 | atomic_set(&listener->ref_count, 1); | |
2222 | } | |
2223 | /* pasive case */ | |
2224 | /* find already inc'ed the ref count */ | |
2225 | else { | |
2226 | listener->reused_node = 1; | |
2227 | } | |
2228 | ||
2229 | listener->cm_id = cm_info->cm_id; | |
2230 | atomic_set(&listener->pend_accepts_cnt, 0); | |
2231 | listener->cm_core = cm_core; | |
2232 | listener->nesvnic = nesvnic; | |
2233 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c | 2234 | |
3c2d774c GS |
2235 | listener->conn_type = cm_info->conn_type; |
2236 | listener->backlog = cm_info->backlog; | |
2237 | listener->listener_state = NES_CM_LISTENER_ACTIVE_STATE; | |
2238 | ||
2239 | if (!listener->reused_node) { | |
2240 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
2241 | list_add(&listener->list, &cm_core->listen_list.list); | |
2242 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
2243 | atomic_inc(&cm_core->listen_node_cnt); | |
2244 | } | |
2245 | ||
2246 | nes_debug(NES_DBG_CM, "Api - listen(): addr=0x%08X, port=0x%04x," | |
615eb715 TN |
2247 | " listener = %p, backlog = %d, cm_id = %p.\n", |
2248 | cm_info->loc_addr, cm_info->loc_port, | |
2249 | listener, listener->backlog, listener->cm_id); | |
3c2d774c GS |
2250 | |
2251 | return listener; | |
2252 | } | |
2253 | ||
2254 | ||
2255 | /** | |
2256 | * mini_cm_connect - make a connection node with params | |
2257 | */ | |
54c86a8c | 2258 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, |
615eb715 TN |
2259 | struct nes_vnic *nesvnic, u16 private_data_len, |
2260 | void *private_data, struct nes_cm_info *cm_info) | |
3c2d774c GS |
2261 | { |
2262 | int ret = 0; | |
2263 | struct nes_cm_node *cm_node; | |
2264 | struct nes_cm_listener *loopbackremotelistener; | |
2265 | struct nes_cm_node *loopbackremotenode; | |
2266 | struct nes_cm_info loopback_cm_info; | |
615eb715 | 2267 | u8 *start_buff; |
3c2d774c GS |
2268 | |
2269 | /* create a CM connection node */ | |
2270 | cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL); | |
2271 | if (!cm_node) | |
2272 | return NULL; | |
2273 | ||
7495ab68 | 2274 | /* set our node side to client (active) side */ |
3c2d774c GS |
2275 | cm_node->tcp_cntxt.client = 1; |
2276 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
2277 | ||
2278 | if (cm_info->loc_addr == cm_info->rem_addr) { | |
6492cdf3 | 2279 | loopbackremotelistener = find_listener(cm_core, |
615eb715 TN |
2280 | ntohl(nesvnic->local_ipaddr), cm_node->rem_port, |
2281 | NES_CM_LISTENER_ACTIVE_STATE); | |
3c2d774c GS |
2282 | if (loopbackremotelistener == NULL) { |
2283 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2284 | } else { | |
3c2d774c GS |
2285 | loopback_cm_info = *cm_info; |
2286 | loopback_cm_info.loc_port = cm_info->rem_port; | |
2287 | loopback_cm_info.rem_port = cm_info->loc_port; | |
2288 | loopback_cm_info.cm_id = loopbackremotelistener->cm_id; | |
6492cdf3 | 2289 | loopbackremotenode = make_cm_node(cm_core, nesvnic, |
615eb715 | 2290 | &loopback_cm_info, loopbackremotelistener); |
79fc3d74 FL |
2291 | if (!loopbackremotenode) { |
2292 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
2293 | return NULL; | |
2294 | } | |
2295 | atomic_inc(&cm_loopbacks); | |
3c2d774c | 2296 | loopbackremotenode->loopbackpartner = cm_node; |
6492cdf3 FL |
2297 | loopbackremotenode->tcp_cntxt.rcv_wscale = |
2298 | NES_CM_DEFAULT_RCV_WND_SCALE; | |
3c2d774c | 2299 | cm_node->loopbackpartner = loopbackremotenode; |
6492cdf3 | 2300 | memcpy(loopbackremotenode->mpa_frame_buf, private_data, |
615eb715 | 2301 | private_data_len); |
6492cdf3 | 2302 | loopbackremotenode->mpa_frame_size = private_data_len; |
3c2d774c | 2303 | |
6492cdf3 FL |
2304 | /* we are done handling this state. */ |
2305 | /* set node to a TSA state */ | |
3c2d774c | 2306 | cm_node->state = NES_CM_STATE_TSA; |
6492cdf3 FL |
2307 | cm_node->tcp_cntxt.rcv_nxt = |
2308 | loopbackremotenode->tcp_cntxt.loc_seq_num; | |
2309 | loopbackremotenode->tcp_cntxt.rcv_nxt = | |
2310 | cm_node->tcp_cntxt.loc_seq_num; | |
2311 | cm_node->tcp_cntxt.max_snd_wnd = | |
2312 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2313 | loopbackremotenode->tcp_cntxt.max_snd_wnd = | |
2314 | cm_node->tcp_cntxt.rcv_wnd; | |
2315 | cm_node->tcp_cntxt.snd_wnd = | |
2316 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2317 | loopbackremotenode->tcp_cntxt.snd_wnd = | |
2318 | cm_node->tcp_cntxt.rcv_wnd; | |
2319 | cm_node->tcp_cntxt.snd_wscale = | |
2320 | loopbackremotenode->tcp_cntxt.rcv_wscale; | |
2321 | loopbackremotenode->tcp_cntxt.snd_wscale = | |
2322 | cm_node->tcp_cntxt.rcv_wscale; | |
9d5ab133 | 2323 | loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD; |
3c2d774c GS |
2324 | create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ); |
2325 | } | |
2326 | return cm_node; | |
2327 | } | |
2328 | ||
615eb715 TN |
2329 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
2330 | cm_node->mpa_frame_size = private_data_len; | |
6492cdf3 | 2331 | |
615eb715 | 2332 | memcpy(start_buff, private_data, private_data_len); |
3c2d774c GS |
2333 | |
2334 | /* send a syn and goto syn sent state */ | |
2335 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
6492cdf3 FL |
2336 | ret = send_syn(cm_node, 0, NULL); |
2337 | ||
2338 | if (ret) { | |
2339 | /* error in sending the syn free up the cm_node struct */ | |
2340 | nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest " | |
615eb715 TN |
2341 | "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2342 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2343 | cm_node->cm_id); | |
6492cdf3 FL |
2344 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2345 | cm_node = NULL; | |
2346 | } | |
3c2d774c | 2347 | |
615eb715 | 2348 | if (cm_node) { |
6492cdf3 | 2349 | nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X," |
615eb715 TN |
2350 | "port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2351 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2352 | cm_node->cm_id); | |
2353 | } | |
3c2d774c GS |
2354 | |
2355 | return cm_node; | |
2356 | } | |
2357 | ||
2358 | ||
2359 | /** | |
2360 | * mini_cm_accept - accept a connection | |
2361 | * This function is never called | |
2362 | */ | |
615eb715 | 2363 | static int mini_cm_accept(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2364 | { |
2365 | return 0; | |
2366 | } | |
2367 | ||
2368 | ||
2369 | /** | |
2370 | * mini_cm_reject - reject and teardown a connection | |
2371 | */ | |
615eb715 | 2372 | static int mini_cm_reject(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2373 | { |
2374 | int ret = 0; | |
9d5ab133 | 2375 | int err = 0; |
183ecfa3 | 2376 | int passive_state; |
9d5ab133 FL |
2377 | struct nes_cm_event event; |
2378 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
2379 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
3c2d774c | 2380 | |
6492cdf3 | 2381 | nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n", |
615eb715 | 2382 | __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state); |
3c2d774c | 2383 | |
6492cdf3 FL |
2384 | if (cm_node->tcp_cntxt.client) |
2385 | return ret; | |
2386 | cleanup_retrans_entry(cm_node); | |
3c2d774c | 2387 | |
9d5ab133 FL |
2388 | if (!loopback) { |
2389 | passive_state = atomic_add_return(1, &cm_node->passive_state); | |
2390 | if (passive_state == NES_SEND_RESET_EVENT) { | |
2391 | cm_node->state = NES_CM_STATE_CLOSED; | |
2392 | rem_ref_cm_node(cm_core, cm_node); | |
2393 | } else { | |
c5a7d489 FL |
2394 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2395 | rem_ref_cm_node(cm_core, cm_node); | |
2396 | } else { | |
2397 | ret = send_mpa_reject(cm_node); | |
2398 | if (ret) { | |
2399 | cm_node->state = NES_CM_STATE_CLOSED; | |
2400 | err = send_reset(cm_node, NULL); | |
2401 | if (err) | |
2402 | WARN_ON(1); | |
615eb715 | 2403 | } else { |
c5a7d489 | 2404 | cm_id->add_ref(cm_id); |
615eb715 | 2405 | } |
c5a7d489 | 2406 | } |
9d5ab133 FL |
2407 | } |
2408 | } else { | |
2409 | cm_node->cm_id = NULL; | |
c5a7d489 FL |
2410 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2411 | rem_ref_cm_node(cm_core, cm_node); | |
2412 | rem_ref_cm_node(cm_core, loopback); | |
2413 | } else { | |
2414 | event.cm_node = loopback; | |
2415 | event.cm_info.rem_addr = loopback->rem_addr; | |
2416 | event.cm_info.loc_addr = loopback->loc_addr; | |
2417 | event.cm_info.rem_port = loopback->rem_port; | |
2418 | event.cm_info.loc_port = loopback->loc_port; | |
2419 | event.cm_info.cm_id = loopback->cm_id; | |
2420 | cm_event_mpa_reject(&event); | |
2421 | rem_ref_cm_node(cm_core, cm_node); | |
2422 | loopback->state = NES_CM_STATE_CLOSING; | |
9d5ab133 | 2423 | |
c5a7d489 FL |
2424 | cm_id = loopback->cm_id; |
2425 | rem_ref_cm_node(cm_core, loopback); | |
2426 | cm_id->rem_ref(cm_id); | |
2427 | } | |
9d5ab133 FL |
2428 | } |
2429 | ||
3c2d774c GS |
2430 | return ret; |
2431 | } | |
2432 | ||
2433 | ||
2434 | /** | |
2435 | * mini_cm_close | |
2436 | */ | |
1a855fbf | 2437 | static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2438 | { |
2439 | int ret = 0; | |
2440 | ||
2441 | if (!cm_core || !cm_node) | |
2442 | return -EINVAL; | |
2443 | ||
2444 | switch (cm_node->state) { | |
6492cdf3 FL |
2445 | case NES_CM_STATE_SYN_RCVD: |
2446 | case NES_CM_STATE_SYN_SENT: | |
2447 | case NES_CM_STATE_ONE_SIDE_ESTABLISHED: | |
2448 | case NES_CM_STATE_ESTABLISHED: | |
2449 | case NES_CM_STATE_ACCEPTING: | |
2450 | case NES_CM_STATE_MPAREQ_SENT: | |
2451 | case NES_CM_STATE_MPAREQ_RCVD: | |
2452 | cleanup_retrans_entry(cm_node); | |
2453 | send_reset(cm_node, NULL); | |
2454 | break; | |
2455 | case NES_CM_STATE_CLOSE_WAIT: | |
2456 | cm_node->state = NES_CM_STATE_LAST_ACK; | |
2457 | send_fin(cm_node, NULL); | |
2458 | break; | |
2459 | case NES_CM_STATE_FIN_WAIT1: | |
2460 | case NES_CM_STATE_FIN_WAIT2: | |
2461 | case NES_CM_STATE_LAST_ACK: | |
2462 | case NES_CM_STATE_TIME_WAIT: | |
2463 | case NES_CM_STATE_CLOSING: | |
2464 | ret = -1; | |
2465 | break; | |
2466 | case NES_CM_STATE_LISTENING: | |
886f98a3 FL |
2467 | cleanup_retrans_entry(cm_node); |
2468 | send_reset(cm_node, NULL); | |
2469 | break; | |
2470 | case NES_CM_STATE_MPAREJ_RCVD: | |
6492cdf3 FL |
2471 | case NES_CM_STATE_UNKNOWN: |
2472 | case NES_CM_STATE_INITED: | |
2473 | case NES_CM_STATE_CLOSED: | |
c5a7d489 | 2474 | case NES_CM_STATE_LISTENER_DESTROYED: |
6492cdf3 FL |
2475 | ret = rem_ref_cm_node(cm_core, cm_node); |
2476 | break; | |
2477 | case NES_CM_STATE_TSA: | |
2478 | if (cm_node->send_entry) | |
2479 | printk(KERN_ERR "ERROR Close got called from STATE_TSA " | |
615eb715 | 2480 | "send_entry=%p\n", cm_node->send_entry); |
6492cdf3 FL |
2481 | ret = rem_ref_cm_node(cm_core, cm_node); |
2482 | break; | |
3c2d774c | 2483 | } |
3c2d774c GS |
2484 | return ret; |
2485 | } | |
2486 | ||
2487 | ||
2488 | /** | |
2489 | * recv_pkt - recv an ETHERNET packet, and process it through CM | |
2490 | * node state machine | |
2491 | */ | |
4a14f6a7 | 2492 | static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, |
615eb715 | 2493 | struct nes_vnic *nesvnic, struct sk_buff *skb) |
3c2d774c GS |
2494 | { |
2495 | struct nes_cm_node *cm_node = NULL; | |
2496 | struct nes_cm_listener *listener = NULL; | |
2497 | struct iphdr *iph; | |
2498 | struct tcphdr *tcph; | |
2499 | struct nes_cm_info nfo; | |
4a14f6a7 | 2500 | int skb_handled = 1; |
03080e5c | 2501 | __be32 tmp_daddr, tmp_saddr; |
3c2d774c | 2502 | |
6492cdf3 | 2503 | if (!skb) |
4a14f6a7 | 2504 | return 0; |
615eb715 | 2505 | if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) |
4a14f6a7 | 2506 | return 0; |
3c2d774c GS |
2507 | |
2508 | iph = (struct iphdr *)skb->data; | |
2509 | tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr)); | |
3c2d774c GS |
2510 | |
2511 | nfo.loc_addr = ntohl(iph->daddr); | |
2512 | nfo.loc_port = ntohs(tcph->dest); | |
2513 | nfo.rem_addr = ntohl(iph->saddr); | |
2514 | nfo.rem_port = ntohs(tcph->source); | |
2515 | ||
03080e5c HH |
2516 | tmp_daddr = cpu_to_be32(iph->daddr); |
2517 | tmp_saddr = cpu_to_be32(iph->saddr); | |
2518 | ||
63779436 | 2519 | nes_debug(NES_DBG_CM, "Received packet: dest=%pI4:0x%04X src=%pI4:0x%04X\n", |
03080e5c | 2520 | &tmp_daddr, tcph->dest, &tmp_saddr, tcph->source); |
3c2d774c | 2521 | |
6492cdf3 FL |
2522 | do { |
2523 | cm_node = find_node(cm_core, | |
615eb715 TN |
2524 | nfo.rem_port, nfo.rem_addr, |
2525 | nfo.loc_port, nfo.loc_addr); | |
3c2d774c | 2526 | |
3c2d774c | 2527 | if (!cm_node) { |
6492cdf3 FL |
2528 | /* Only type of packet accepted are for */ |
2529 | /* the PASSIVE open (syn only) */ | |
2530 | if ((!tcph->syn) || (tcph->ack)) { | |
4a14f6a7 | 2531 | skb_handled = 0; |
6492cdf3 FL |
2532 | break; |
2533 | } | |
2534 | listener = find_listener(cm_core, nfo.loc_addr, | |
615eb715 TN |
2535 | nfo.loc_port, |
2536 | NES_CM_LISTENER_ACTIVE_STATE); | |
4a14f6a7 FL |
2537 | if (!listener) { |
2538 | nfo.cm_id = NULL; | |
2539 | nfo.conn_type = 0; | |
2540 | nes_debug(NES_DBG_CM, "Unable to find listener for the pkt\n"); | |
2541 | skb_handled = 0; | |
6492cdf3 FL |
2542 | break; |
2543 | } | |
4a14f6a7 FL |
2544 | nfo.cm_id = listener->cm_id; |
2545 | nfo.conn_type = listener->conn_type; | |
6492cdf3 | 2546 | cm_node = make_cm_node(cm_core, nesvnic, &nfo, |
615eb715 | 2547 | listener); |
6492cdf3 FL |
2548 | if (!cm_node) { |
2549 | nes_debug(NES_DBG_CM, "Unable to allocate " | |
615eb715 | 2550 | "node\n"); |
6492cdf3 | 2551 | cm_packets_dropped++; |
3c2d774c | 2552 | atomic_dec(&listener->ref_count); |
6492cdf3 FL |
2553 | dev_kfree_skb_any(skb); |
2554 | break; | |
3c2d774c | 2555 | } |
6492cdf3 FL |
2556 | if (!tcph->rst && !tcph->fin) { |
2557 | cm_node->state = NES_CM_STATE_LISTENING; | |
2558 | } else { | |
2559 | cm_packets_dropped++; | |
2560 | rem_ref_cm_node(cm_core, cm_node); | |
2561 | dev_kfree_skb_any(skb); | |
2562 | break; | |
3c2d774c | 2563 | } |
6492cdf3 FL |
2564 | add_ref_cm_node(cm_node); |
2565 | } else if (cm_node->state == NES_CM_STATE_TSA) { | |
0f0bee8b FL |
2566 | if (cm_node->nesqp->pau_mode) |
2567 | nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp); | |
2568 | else { | |
2569 | rem_ref_cm_node(cm_core, cm_node); | |
2570 | atomic_inc(&cm_accel_dropped_pkts); | |
2571 | dev_kfree_skb_any(skb); | |
2572 | } | |
6492cdf3 | 2573 | break; |
3c2d774c | 2574 | } |
4a14f6a7 FL |
2575 | skb_reset_network_header(skb); |
2576 | skb_set_transport_header(skb, sizeof(*tcph)); | |
2577 | skb->len = ntohs(iph->tot_len); | |
6492cdf3 FL |
2578 | process_packet(cm_node, skb, cm_core); |
2579 | rem_ref_cm_node(cm_core, cm_node); | |
2580 | } while (0); | |
4a14f6a7 | 2581 | return skb_handled; |
3c2d774c GS |
2582 | } |
2583 | ||
2584 | ||
2585 | /** | |
2586 | * nes_cm_alloc_core - allocate a top level instance of a cm core | |
2587 | */ | |
1a855fbf | 2588 | static struct nes_cm_core *nes_cm_alloc_core(void) |
3c2d774c | 2589 | { |
3c2d774c | 2590 | struct nes_cm_core *cm_core; |
3c2d774c GS |
2591 | |
2592 | /* setup the CM core */ | |
2593 | /* alloc top level core control structure */ | |
2594 | cm_core = kzalloc(sizeof(*cm_core), GFP_KERNEL); | |
2595 | if (!cm_core) | |
2596 | return NULL; | |
2597 | ||
2598 | INIT_LIST_HEAD(&cm_core->connected_nodes); | |
2599 | init_timer(&cm_core->tcp_timer); | |
2600 | cm_core->tcp_timer.function = nes_cm_timer_tick; | |
2601 | ||
615eb715 | 2602 | cm_core->mtu = NES_CM_DEFAULT_MTU; |
3c2d774c GS |
2603 | cm_core->state = NES_CM_STATE_INITED; |
2604 | cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS; | |
2605 | ||
3c2d774c GS |
2606 | atomic_set(&cm_core->events_posted, 0); |
2607 | ||
3c2d774c GS |
2608 | cm_core->api = &nes_cm_api; |
2609 | ||
2610 | spin_lock_init(&cm_core->ht_lock); | |
2611 | spin_lock_init(&cm_core->listen_list_lock); | |
2612 | ||
2613 | INIT_LIST_HEAD(&cm_core->listen_list.list); | |
2614 | ||
2615 | nes_debug(NES_DBG_CM, "Init CM Core completed -- cm_core=%p\n", cm_core); | |
2616 | ||
2617 | nes_debug(NES_DBG_CM, "Enable QUEUE EVENTS\n"); | |
2618 | cm_core->event_wq = create_singlethread_workqueue("nesewq"); | |
2619 | cm_core->post_event = nes_cm_post_event; | |
2620 | nes_debug(NES_DBG_CM, "Enable QUEUE DISCONNECTS\n"); | |
2621 | cm_core->disconn_wq = create_singlethread_workqueue("nesdwq"); | |
2622 | ||
2623 | print_core(cm_core); | |
2624 | return cm_core; | |
2625 | } | |
2626 | ||
2627 | ||
2628 | /** | |
2629 | * mini_cm_dealloc_core - deallocate a top level instance of a cm core | |
2630 | */ | |
1a855fbf | 2631 | static int mini_cm_dealloc_core(struct nes_cm_core *cm_core) |
3c2d774c GS |
2632 | { |
2633 | nes_debug(NES_DBG_CM, "De-Alloc CM Core (%p)\n", cm_core); | |
2634 | ||
2635 | if (!cm_core) | |
2636 | return -EINVAL; | |
2637 | ||
2638 | barrier(); | |
2639 | ||
615eb715 | 2640 | if (timer_pending(&cm_core->tcp_timer)) |
3c2d774c | 2641 | del_timer(&cm_core->tcp_timer); |
3c2d774c GS |
2642 | |
2643 | destroy_workqueue(cm_core->event_wq); | |
2644 | destroy_workqueue(cm_core->disconn_wq); | |
2645 | nes_debug(NES_DBG_CM, "\n"); | |
2646 | kfree(cm_core); | |
2647 | ||
2648 | return 0; | |
2649 | } | |
2650 | ||
2651 | ||
2652 | /** | |
2653 | * mini_cm_get | |
2654 | */ | |
1a855fbf | 2655 | static int mini_cm_get(struct nes_cm_core *cm_core) |
3c2d774c GS |
2656 | { |
2657 | return cm_core->state; | |
2658 | } | |
2659 | ||
2660 | ||
2661 | /** | |
2662 | * mini_cm_set | |
2663 | */ | |
1a855fbf | 2664 | static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value) |
3c2d774c GS |
2665 | { |
2666 | int ret = 0; | |
2667 | ||
2668 | switch (type) { | |
9d5ab133 FL |
2669 | case NES_CM_SET_PKT_SIZE: |
2670 | cm_core->mtu = value; | |
2671 | break; | |
2672 | case NES_CM_SET_FREE_PKT_Q_SIZE: | |
2673 | cm_core->free_tx_pkt_max = value; | |
2674 | break; | |
2675 | default: | |
2676 | /* unknown set option */ | |
2677 | ret = -EINVAL; | |
3c2d774c GS |
2678 | } |
2679 | ||
2680 | return ret; | |
2681 | } | |
2682 | ||
2683 | ||
2684 | /** | |
2685 | * nes_cm_init_tsa_conn setup HW; MPA frames must be | |
2686 | * successfully exchanged when this is called | |
2687 | */ | |
2688 | static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_node) | |
2689 | { | |
2690 | int ret = 0; | |
2691 | ||
2692 | if (!nesqp) | |
2693 | return -EINVAL; | |
2694 | ||
2695 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_IPV4 | | |
615eb715 TN |
2696 | NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG | |
2697 | NES_QPCONTEXT_MISC_DROS); | |
3c2d774c GS |
2698 | |
2699 | if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale) | |
2700 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WSCALE); | |
2701 | ||
2702 | nesqp->nesqp_context->misc2 |= cpu_to_le32(64 << NES_QPCONTEXT_MISC2_TTL_SHIFT); | |
2703 | ||
2704 | nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16); | |
2705 | ||
2706 | nesqp->nesqp_context->tcp_state_flow_label |= cpu_to_le32( | |
615eb715 | 2707 | (u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT); |
3c2d774c GS |
2708 | |
2709 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2710 | (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) & |
2711 | NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK); | |
3c2d774c GS |
2712 | |
2713 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2714 | (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) & |
2715 | NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK); | |
3c2d774c GS |
2716 | |
2717 | nesqp->nesqp_context->keepalive = cpu_to_le32(0x80); | |
2718 | nesqp->nesqp_context->ts_recent = 0; | |
2719 | nesqp->nesqp_context->ts_age = 0; | |
2720 | nesqp->nesqp_context->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2721 | nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd); | |
2722 | nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); | |
2723 | nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd << | |
615eb715 | 2724 | cm_node->tcp_cntxt.rcv_wscale); |
3c2d774c GS |
2725 | nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
2726 | nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2727 | nesqp->nesqp_context->srtt = 0; | |
2728 | nesqp->nesqp_context->rttvar = cpu_to_le32(0x6); | |
2729 | nesqp->nesqp_context->ssthresh = cpu_to_le32(0x3FFFC000); | |
615eb715 | 2730 | nesqp->nesqp_context->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss); |
3c2d774c GS |
2731 | nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); |
2732 | nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2733 | nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd); | |
2734 | ||
2735 | nes_debug(NES_DBG_CM, "QP%u: rcv_nxt = 0x%08X, snd_nxt = 0x%08X," | |
615eb715 TN |
2736 | " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n", |
2737 | nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt), | |
2738 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
2739 | cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale), | |
2740 | le32_to_cpu(nesqp->nesqp_context->rcv_wnd), | |
2741 | le32_to_cpu(nesqp->nesqp_context->misc)); | |
3c2d774c GS |
2742 | nes_debug(NES_DBG_CM, " snd_wnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->snd_wnd)); |
2743 | nes_debug(NES_DBG_CM, " snd_cwnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->cwnd)); | |
2744 | nes_debug(NES_DBG_CM, " max_swnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->max_snd_wnd)); | |
2745 | ||
2746 | nes_debug(NES_DBG_CM, "Change cm_node state to TSA\n"); | |
2747 | cm_node->state = NES_CM_STATE_TSA; | |
2748 | ||
2749 | return ret; | |
2750 | } | |
2751 | ||
2752 | ||
2753 | /** | |
2754 | * nes_cm_disconn | |
2755 | */ | |
2756 | int nes_cm_disconn(struct nes_qp *nesqp) | |
2757 | { | |
873fcdd4 | 2758 | struct disconn_work *work; |
3c2d774c | 2759 | |
873fcdd4 DW |
2760 | work = kzalloc(sizeof *work, GFP_ATOMIC); |
2761 | if (!work) | |
615eb715 | 2762 | return -ENOMEM; /* Timer will clean up */ |
3c2d774c | 2763 | |
873fcdd4 DW |
2764 | nes_add_ref(&nesqp->ibqp); |
2765 | work->nesqp = nesqp; | |
2766 | INIT_WORK(&work->work, nes_disconnect_worker); | |
2767 | queue_work(g_cm_core->disconn_wq, &work->work); | |
3c2d774c GS |
2768 | return 0; |
2769 | } | |
2770 | ||
2771 | ||
2772 | /** | |
2773 | * nes_disconnect_worker | |
2774 | */ | |
1a855fbf | 2775 | static void nes_disconnect_worker(struct work_struct *work) |
3c2d774c | 2776 | { |
873fcdd4 DW |
2777 | struct disconn_work *dwork = container_of(work, struct disconn_work, work); |
2778 | struct nes_qp *nesqp = dwork->nesqp; | |
3c2d774c | 2779 | |
873fcdd4 | 2780 | kfree(dwork); |
3c2d774c | 2781 | nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n", |
615eb715 | 2782 | nesqp->last_aeq, nesqp->hwqp.qp_id); |
3c2d774c | 2783 | nes_cm_disconn_true(nesqp); |
c4c3f279 | 2784 | nes_rem_ref(&nesqp->ibqp); |
3c2d774c GS |
2785 | } |
2786 | ||
2787 | ||
2788 | /** | |
2789 | * nes_cm_disconn_true | |
2790 | */ | |
1a855fbf | 2791 | static int nes_cm_disconn_true(struct nes_qp *nesqp) |
3c2d774c GS |
2792 | { |
2793 | unsigned long flags; | |
2794 | int ret = 0; | |
2795 | struct iw_cm_id *cm_id; | |
2796 | struct iw_cm_event cm_event; | |
2797 | struct nes_vnic *nesvnic; | |
2798 | u16 last_ae; | |
2799 | u8 original_hw_tcp_state; | |
2800 | u8 original_ibqp_state; | |
d0c49bf3 | 2801 | int disconn_status = 0; |
b29a4fc4 DW |
2802 | int issue_disconn = 0; |
2803 | int issue_close = 0; | |
2804 | int issue_flush = 0; | |
2805 | u32 flush_q = NES_CQP_FLUSH_RQ; | |
2806 | struct ib_event ibevent; | |
3c2d774c GS |
2807 | |
2808 | if (!nesqp) { | |
2809 | nes_debug(NES_DBG_CM, "disconnect_worker nesqp is NULL\n"); | |
2810 | return -1; | |
2811 | } | |
2812 | ||
2813 | spin_lock_irqsave(&nesqp->lock, flags); | |
2814 | cm_id = nesqp->cm_id; | |
2815 | /* make sure we havent already closed this connection */ | |
2816 | if (!cm_id) { | |
2817 | nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n", | |
615eb715 | 2818 | nesqp->hwqp.qp_id); |
3c2d774c | 2819 | spin_unlock_irqrestore(&nesqp->lock, flags); |
3c2d774c GS |
2820 | return -1; |
2821 | } | |
2822 | ||
2823 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
2824 | nes_debug(NES_DBG_CM, "Disconnecting QP%u\n", nesqp->hwqp.qp_id); | |
2825 | ||
2826 | original_hw_tcp_state = nesqp->hw_tcp_state; | |
615eb715 | 2827 | original_ibqp_state = nesqp->ibqp_state; |
3c2d774c GS |
2828 | last_ae = nesqp->last_aeq; |
2829 | ||
b29a4fc4 DW |
2830 | if (nesqp->term_flags) { |
2831 | issue_disconn = 1; | |
2832 | issue_close = 1; | |
2833 | nesqp->cm_id = NULL; | |
196f40c8 | 2834 | del_timer(&nesqp->terminate_timer); |
b29a4fc4 DW |
2835 | if (nesqp->flush_issued == 0) { |
2836 | nesqp->flush_issued = 1; | |
2837 | issue_flush = 1; | |
2838 | } | |
2839 | } else if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) || | |
2840 | ((original_ibqp_state == IB_QPS_RTS) && | |
2841 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
2842 | issue_disconn = 1; | |
2843 | if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) | |
d0c49bf3 | 2844 | disconn_status = -ECONNRESET; |
b29a4fc4 DW |
2845 | } |
2846 | ||
2847 | if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) || | |
2848 | (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) || | |
2849 | (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) || | |
2850 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
2851 | issue_close = 1; | |
2852 | nesqp->cm_id = NULL; | |
2853 | if (nesqp->flush_issued == 0) { | |
2854 | nesqp->flush_issued = 1; | |
2855 | issue_flush = 1; | |
2856 | } | |
2857 | } | |
3c2d774c | 2858 | |
b29a4fc4 DW |
2859 | spin_unlock_irqrestore(&nesqp->lock, flags); |
2860 | ||
2861 | if ((issue_flush) && (nesqp->destroyed == 0)) { | |
2862 | /* Flush the queue(s) */ | |
2863 | if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE) | |
2864 | flush_q |= NES_CQP_FLUSH_SQ; | |
2865 | flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1); | |
2866 | ||
2867 | if (nesqp->term_flags) { | |
2868 | ibevent.device = nesqp->ibqp.device; | |
2869 | ibevent.event = nesqp->terminate_eventtype; | |
2870 | ibevent.element.qp = &nesqp->ibqp; | |
784d135f TN |
2871 | if (nesqp->ibqp.event_handler) |
2872 | nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context); | |
b29a4fc4 DW |
2873 | } |
2874 | } | |
3c2d774c | 2875 | |
b29a4fc4 DW |
2876 | if ((cm_id) && (cm_id->event_handler)) { |
2877 | if (issue_disconn) { | |
3c2d774c GS |
2878 | atomic_inc(&cm_disconnects); |
2879 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
b29a4fc4 | 2880 | cm_event.status = disconn_status; |
3c2d774c GS |
2881 | cm_event.local_addr = cm_id->local_addr; |
2882 | cm_event.remote_addr = cm_id->remote_addr; | |
2883 | cm_event.private_data = NULL; | |
2884 | cm_event.private_data_len = 0; | |
2885 | ||
6492cdf3 | 2886 | nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event" |
615eb715 TN |
2887 | " for QP%u, SQ Head = %u, SQ Tail = %u. " |
2888 | "cm_id = %p, refcount = %u.\n", | |
2889 | nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, | |
2890 | nesqp->hwqp.sq_tail, cm_id, | |
2891 | atomic_read(&nesqp->refcount)); | |
3c2d774c | 2892 | |
3c2d774c GS |
2893 | ret = cm_id->event_handler(cm_id, &cm_event); |
2894 | if (ret) | |
6492cdf3 | 2895 | nes_debug(NES_DBG_CM, "OFA CM event_handler " |
615eb715 | 2896 | "returned, ret=%d\n", ret); |
3c2d774c GS |
2897 | } |
2898 | ||
b29a4fc4 | 2899 | if (issue_close) { |
3c2d774c | 2900 | atomic_inc(&cm_closes); |
3c2d774c GS |
2901 | nes_disconnect(nesqp, 1); |
2902 | ||
2903 | cm_id->provider_data = nesqp; | |
2904 | /* Send up the close complete event */ | |
2905 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 2906 | cm_event.status = 0; |
3c2d774c GS |
2907 | cm_event.provider_data = cm_id->provider_data; |
2908 | cm_event.local_addr = cm_id->local_addr; | |
2909 | cm_event.remote_addr = cm_id->remote_addr; | |
2910 | cm_event.private_data = NULL; | |
2911 | cm_event.private_data_len = 0; | |
2912 | ||
2913 | ret = cm_id->event_handler(cm_id, &cm_event); | |
615eb715 | 2914 | if (ret) |
3c2d774c | 2915 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3c2d774c GS |
2916 | |
2917 | cm_id->rem_ref(cm_id); | |
3c2d774c | 2918 | } |
3c2d774c | 2919 | } |
3c2d774c GS |
2920 | |
2921 | return 0; | |
2922 | } | |
2923 | ||
2924 | ||
2925 | /** | |
2926 | * nes_disconnect | |
2927 | */ | |
1a855fbf | 2928 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt) |
3c2d774c GS |
2929 | { |
2930 | int ret = 0; | |
2931 | struct nes_vnic *nesvnic; | |
2932 | struct nes_device *nesdev; | |
c12e56ef | 2933 | struct nes_ib_device *nesibdev; |
3c2d774c GS |
2934 | |
2935 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
2936 | if (!nesvnic) | |
2937 | return -EINVAL; | |
2938 | ||
2939 | nesdev = nesvnic->nesdev; | |
c12e56ef | 2940 | nesibdev = nesvnic->nesibdev; |
3c2d774c GS |
2941 | |
2942 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 2943 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c GS |
2944 | |
2945 | if (nesqp->active_conn) { | |
2946 | ||
2947 | /* indicate this connection is NOT active */ | |
2948 | nesqp->active_conn = 0; | |
2949 | } else { | |
2950 | /* Need to free the Last Streaming Mode Message */ | |
2951 | if (nesqp->ietf_frame) { | |
c12e56ef FL |
2952 | if (nesqp->lsmm_mr) |
2953 | nesibdev->ibdev.dereg_mr(nesqp->lsmm_mr); | |
3c2d774c | 2954 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
2955 | nesqp->private_data_len + nesqp->ietf_frame_size, |
2956 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
3c2d774c GS |
2957 | } |
2958 | } | |
2959 | ||
2960 | /* close the CM node down if it is still active */ | |
2961 | if (nesqp->cm_node) { | |
2962 | nes_debug(NES_DBG_CM, "Call close API\n"); | |
2963 | ||
2964 | g_cm_core->api->close(g_cm_core, nesqp->cm_node); | |
3c2d774c GS |
2965 | } |
2966 | ||
2967 | return ret; | |
2968 | } | |
2969 | ||
2970 | ||
2971 | /** | |
2972 | * nes_accept | |
2973 | */ | |
2974 | int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
2975 | { | |
2976 | u64 u64temp; | |
2977 | struct ib_qp *ibqp; | |
2978 | struct nes_qp *nesqp; | |
2979 | struct nes_vnic *nesvnic; | |
2980 | struct nes_device *nesdev; | |
2981 | struct nes_cm_node *cm_node; | |
2982 | struct nes_adapter *adapter; | |
2983 | struct ib_qp_attr attr; | |
2984 | struct iw_cm_event cm_event; | |
2985 | struct nes_hw_qp_wqe *wqe; | |
2986 | struct nes_v4_quad nes_quad; | |
30da7cff | 2987 | u32 crc_value; |
3c2d774c | 2988 | int ret; |
183ecfa3 | 2989 | int passive_state; |
c12e56ef FL |
2990 | struct nes_ib_device *nesibdev; |
2991 | struct ib_mr *ibmr = NULL; | |
2992 | struct ib_phys_buf ibphysbuf; | |
2993 | struct nes_pd *nespd; | |
7a5efb62 | 2994 | u64 tagged_offset; |
615eb715 TN |
2995 | u8 mpa_frame_offset = 0; |
2996 | struct ietf_mpa_v2 *mpa_v2_frame; | |
2997 | u8 start_addr = 0; | |
2998 | u8 *start_ptr = &start_addr; | |
2999 | u8 **start_buff = &start_ptr; | |
3000 | u16 buff_len = 0; | |
24d44a39 SW |
3001 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3002 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
c12e56ef | 3003 | |
3c2d774c GS |
3004 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
3005 | if (!ibqp) | |
3006 | return -EINVAL; | |
3007 | ||
3008 | /* get all our handles */ | |
3009 | nesqp = to_nesqp(ibqp); | |
3010 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3011 | nesdev = nesvnic->nesdev; | |
3012 | adapter = nesdev->nesadapter; | |
3013 | ||
3c2d774c | 3014 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
6492cdf3 FL |
3015 | nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p," |
3016 | "%s\n", cm_node, nesvnic, nesvnic->netdev, | |
3017 | nesvnic->netdev->name); | |
3c2d774c | 3018 | |
c5a7d489 FL |
3019 | if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) { |
3020 | if (cm_node->loopbackpartner) | |
3021 | rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner); | |
3022 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3023 | return -EINVAL; | |
3024 | } | |
3025 | ||
dae58728 FL |
3026 | passive_state = atomic_add_return(1, &cm_node->passive_state); |
3027 | if (passive_state == NES_SEND_RESET_EVENT) { | |
3028 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3029 | return -ECONNRESET; | |
3030 | } | |
3031 | ||
3c2d774c GS |
3032 | /* associate the node with the QP */ |
3033 | nesqp->cm_node = (void *)cm_node; | |
6492cdf3 | 3034 | cm_node->nesqp = nesqp; |
3c2d774c | 3035 | |
6492cdf3 FL |
3036 | nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", |
3037 | nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); | |
3c2d774c GS |
3038 | atomic_inc(&cm_accepts); |
3039 | ||
3040 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 3041 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c | 3042 | |
615eb715 | 3043 | nesqp->ietf_frame_size = sizeof(struct ietf_mpa_v2); |
6492cdf3 FL |
3044 | /* allocate the ietf frame and space for private data */ |
3045 | nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev, | |
615eb715 TN |
3046 | nesqp->ietf_frame_size + conn_param->private_data_len, |
3047 | &nesqp->ietf_frame_pbase); | |
3c2d774c | 3048 | |
6492cdf3 | 3049 | if (!nesqp->ietf_frame) { |
615eb715 | 3050 | nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n"); |
6492cdf3 FL |
3051 | return -ENOMEM; |
3052 | } | |
615eb715 | 3053 | mpa_v2_frame = (struct ietf_mpa_v2 *)nesqp->ietf_frame; |
3c2d774c | 3054 | |
615eb715 TN |
3055 | if (cm_node->mpa_frame_rev == IETF_MPA_V1) |
3056 | mpa_frame_offset = 4; | |
3c2d774c | 3057 | |
615eb715 TN |
3058 | memcpy(mpa_v2_frame->priv_data, conn_param->private_data, |
3059 | conn_param->private_data_len); | |
3c2d774c | 3060 | |
615eb715 TN |
3061 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, nesqp->ietf_frame, MPA_KEY_REPLY); |
3062 | nesqp->private_data_len = conn_param->private_data_len; | |
3c2d774c | 3063 | |
6492cdf3 FL |
3064 | /* setup our first outgoing iWarp send WQE (the IETF frame response) */ |
3065 | wqe = &nesqp->hwqp.sq_vbase[0]; | |
3066 | ||
24d44a39 | 3067 | if (raddr->sin_addr.s_addr != laddr->sin_addr.s_addr) { |
6492cdf3 | 3068 | u64temp = (unsigned long)nesqp; |
c12e56ef FL |
3069 | nesibdev = nesvnic->nesibdev; |
3070 | nespd = nesqp->nespd; | |
615eb715 TN |
3071 | ibphysbuf.addr = nesqp->ietf_frame_pbase + mpa_frame_offset; |
3072 | ibphysbuf.size = buff_len; | |
3073 | tagged_offset = (u64)(unsigned long)*start_buff; | |
c12e56ef | 3074 | ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd, |
615eb715 TN |
3075 | &ibphysbuf, 1, |
3076 | IB_ACCESS_LOCAL_WRITE, | |
3077 | &tagged_offset); | |
c12e56ef FL |
3078 | if (!ibmr) { |
3079 | nes_debug(NES_DBG_CM, "Unable to register memory region" | |
615eb715 TN |
3080 | "for lSMM for cm_node = %p \n", |
3081 | cm_node); | |
9256b251 | 3082 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
3083 | nesqp->private_data_len + nesqp->ietf_frame_size, |
3084 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
c12e56ef FL |
3085 | return -ENOMEM; |
3086 | } | |
3087 | ||
3088 | ibmr->pd = &nespd->ibpd; | |
3089 | ibmr->device = nespd->ibpd.device; | |
3090 | nesqp->lsmm_mr = ibmr; | |
3091 | ||
615eb715 | 3092 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
6492cdf3 | 3093 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3094 | NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, |
3095 | u64temp); | |
6492cdf3 FL |
3096 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = |
3097 | cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING | | |
615eb715 | 3098 | NES_IWARP_SQ_WQE_WRPDU); |
6492cdf3 | 3099 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = |
615eb715 | 3100 | cpu_to_le32(buff_len); |
c12e56ef | 3101 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3102 | NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, |
3103 | (u64)(unsigned long)(*start_buff)); | |
6492cdf3 | 3104 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = |
615eb715 | 3105 | cpu_to_le32(buff_len); |
c12e56ef | 3106 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey; |
d2fa9b26 FL |
3107 | if (nesqp->sq_kmapped) { |
3108 | nesqp->sq_kmapped = 0; | |
3109 | kunmap(nesqp->page); | |
3110 | } | |
6492cdf3 FL |
3111 | |
3112 | nesqp->nesqp_context->ird_ord_sizes |= | |
3113 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
615eb715 | 3114 | NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3115 | } else { |
3116 | nesqp->nesqp_context->ird_ord_sizes |= | |
9d5ab133 | 3117 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3118 | } |
3119 | nesqp->skip_lsmm = 1; | |
3c2d774c GS |
3120 | |
3121 | ||
3122 | /* Cache the cm_id in the qp */ | |
3123 | nesqp->cm_id = cm_id; | |
3124 | cm_node->cm_id = cm_id; | |
3125 | ||
3126 | /* nesqp->cm_node = (void *)cm_id->provider_data; */ | |
3127 | cm_id->provider_data = nesqp; | |
615eb715 | 3128 | nesqp->active_conn = 0; |
3c2d774c | 3129 | |
6492cdf3 FL |
3130 | if (cm_node->state == NES_CM_STATE_TSA) |
3131 | nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n", | |
615eb715 | 3132 | cm_node); |
6492cdf3 | 3133 | |
3c2d774c GS |
3134 | nes_cm_init_tsa_conn(nesqp, cm_node); |
3135 | ||
24d44a39 SW |
3136 | nesqp->nesqp_context->tcpPorts[0] = cpu_to_le16(ntohs(laddr->sin_port)); |
3137 | nesqp->nesqp_context->tcpPorts[1] = cpu_to_le16(ntohs(raddr->sin_port)); | |
6492cdf3 | 3138 | |
24d44a39 | 3139 | nesqp->nesqp_context->ip0 = cpu_to_le32(ntohl(raddr->sin_addr.s_addr)); |
3c2d774c GS |
3140 | |
3141 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
615eb715 TN |
3142 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3143 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3144 | |
6492cdf3 FL |
3145 | nesqp->nesqp_context->arp_index_vlan |= |
3146 | cpu_to_le32(nes_arp_table(nesdev, | |
615eb715 TN |
3147 | le32_to_cpu(nesqp->nesqp_context->ip0), NULL, |
3148 | NES_ARP_RESOLVE) << 16); | |
3c2d774c GS |
3149 | |
3150 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
6492cdf3 | 3151 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); |
3c2d774c GS |
3152 | |
3153 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3154 | ||
3155 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32( | |
6492cdf3 FL |
3156 | ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT)); |
3157 | nesqp->nesqp_context->ird_ord_sizes |= | |
3158 | cpu_to_le32((u32)conn_param->ord); | |
3c2d774c GS |
3159 | |
3160 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
6492cdf3 FL |
3161 | nes_quad.DstIpAdrIndex = |
3162 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
24d44a39 SW |
3163 | nes_quad.SrcIpadr = raddr->sin_addr.s_addr; |
3164 | nes_quad.TcpPorts[0] = raddr->sin_port; | |
3165 | nes_quad.TcpPorts[1] = laddr->sin_port; | |
3c2d774c GS |
3166 | |
3167 | /* Produce hash key */ | |
30da7cff FL |
3168 | crc_value = get_crc_value(&nes_quad); |
3169 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3170 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n", |
615eb715 | 3171 | nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask); |
3c2d774c GS |
3172 | |
3173 | nesqp->hte_index &= adapter->hte_index_mask; | |
3174 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3175 | ||
3176 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); | |
3177 | ||
6492cdf3 | 3178 | nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = " |
615eb715 TN |
3179 | "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + " |
3180 | "private data length=%u.\n", nesqp->hwqp.qp_id, | |
24d44a39 SW |
3181 | ntohl(raddr->sin_addr.s_addr), ntohs(raddr->sin_port), |
3182 | ntohl(laddr->sin_addr.s_addr), ntohs(laddr->sin_port), | |
615eb715 TN |
3183 | le32_to_cpu(nesqp->nesqp_context->rcv_nxt), |
3184 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
3185 | buff_len); | |
3c2d774c | 3186 | |
73ac36ea | 3187 | /* notify OF layer that accept event was successful */ |
3c2d774c | 3188 | cm_id->add_ref(cm_id); |
9256b251 | 3189 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3190 | |
3191 | cm_event.event = IW_CM_EVENT_ESTABLISHED; | |
d0c49bf3 | 3192 | cm_event.status = 0; |
3c2d774c GS |
3193 | cm_event.provider_data = (void *)nesqp; |
3194 | cm_event.local_addr = cm_id->local_addr; | |
3195 | cm_event.remote_addr = cm_id->remote_addr; | |
3196 | cm_event.private_data = NULL; | |
3197 | cm_event.private_data_len = 0; | |
3198 | ret = cm_id->event_handler(cm_id, &cm_event); | |
183ecfa3 FL |
3199 | attr.qp_state = IB_QPS_RTS; |
3200 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3201 | if (cm_node->loopbackpartner) { |
6492cdf3 FL |
3202 | cm_node->loopbackpartner->mpa_frame_size = |
3203 | nesqp->private_data_len; | |
3c2d774c | 3204 | /* copy entire MPA frame to our cm_node's frame */ |
6492cdf3 | 3205 | memcpy(cm_node->loopbackpartner->mpa_frame_buf, |
615eb715 | 3206 | conn_param->private_data, conn_param->private_data_len); |
3c2d774c GS |
3207 | create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED); |
3208 | } | |
3209 | if (ret) | |
6492cdf3 | 3210 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3211 | "ret=%d\n", __func__, __LINE__, ret); |
3c2d774c GS |
3212 | |
3213 | return 0; | |
3214 | } | |
3215 | ||
3216 | ||
3217 | /** | |
3218 | * nes_reject | |
3219 | */ | |
3220 | int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
3221 | { | |
3222 | struct nes_cm_node *cm_node; | |
9d5ab133 | 3223 | struct nes_cm_node *loopback; |
3c2d774c | 3224 | struct nes_cm_core *cm_core; |
615eb715 | 3225 | u8 *start_buff; |
3c2d774c GS |
3226 | |
3227 | atomic_inc(&cm_rejects); | |
615eb715 | 3228 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
9d5ab133 | 3229 | loopback = cm_node->loopbackpartner; |
3c2d774c | 3230 | cm_core = cm_node->cm_core; |
9d5ab133 | 3231 | cm_node->cm_id = cm_id; |
3c2d774c | 3232 | |
615eb715 | 3233 | if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER) |
9d5ab133 FL |
3234 | return -EINVAL; |
3235 | ||
9d5ab133 FL |
3236 | if (loopback) { |
3237 | memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len); | |
3238 | loopback->mpa_frame.priv_data_len = pdata_len; | |
615eb715 | 3239 | loopback->mpa_frame_size = pdata_len; |
9d5ab133 | 3240 | } else { |
615eb715 TN |
3241 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
3242 | cm_node->mpa_frame_size = pdata_len; | |
3243 | memcpy(start_buff, pdata, pdata_len); | |
9d5ab133 | 3244 | } |
615eb715 | 3245 | return cm_core->api->reject(cm_core, cm_node); |
3c2d774c GS |
3246 | } |
3247 | ||
3248 | ||
3249 | /** | |
3250 | * nes_connect | |
3251 | * setup and launch cm connect node | |
3252 | */ | |
3253 | int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
3254 | { | |
3255 | struct ib_qp *ibqp; | |
3256 | struct nes_qp *nesqp; | |
3257 | struct nes_vnic *nesvnic; | |
3258 | struct nes_device *nesdev; | |
3259 | struct nes_cm_node *cm_node; | |
3260 | struct nes_cm_info cm_info; | |
53094c38 | 3261 | int apbvt_set = 0; |
24d44a39 SW |
3262 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3263 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
3c2d774c | 3264 | |
24d44a39 SW |
3265 | if (cm_id->remote_addr.ss_family != AF_INET) |
3266 | return -ENOSYS; | |
3c2d774c GS |
3267 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
3268 | if (!ibqp) | |
3269 | return -EINVAL; | |
3270 | nesqp = to_nesqp(ibqp); | |
3271 | if (!nesqp) | |
3272 | return -EINVAL; | |
3273 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3274 | if (!nesvnic) | |
3275 | return -EINVAL; | |
615eb715 | 3276 | nesdev = nesvnic->nesdev; |
3c2d774c GS |
3277 | if (!nesdev) |
3278 | return -EINVAL; | |
3279 | ||
24d44a39 | 3280 | if (!laddr->sin_port || !raddr->sin_port) |
c5a7d489 FL |
3281 | return -EINVAL; |
3282 | ||
6492cdf3 | 3283 | nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = " |
615eb715 | 3284 | "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id, |
24d44a39 SW |
3285 | ntohl(nesvnic->local_ipaddr), ntohl(raddr->sin_addr.s_addr), |
3286 | ntohs(raddr->sin_port), ntohl(laddr->sin_addr.s_addr), | |
3287 | ntohs(laddr->sin_port)); | |
3c2d774c | 3288 | |
6492cdf3 | 3289 | atomic_inc(&cm_connects); |
3c2d774c GS |
3290 | nesqp->active_conn = 1; |
3291 | ||
3c2d774c GS |
3292 | /* cache the cm_id in the qp */ |
3293 | nesqp->cm_id = cm_id; | |
3294 | ||
3295 | cm_id->provider_data = nesqp; | |
3296 | ||
3c2d774c GS |
3297 | nesqp->private_data_len = conn_param->private_data_len; |
3298 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32((u32)conn_param->ord); | |
d3e51328 TN |
3299 | /* space for rdma0 read msg */ |
3300 | if (conn_param->ord == 0) | |
3301 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(1); | |
3302 | ||
3c2d774c | 3303 | nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord); |
6492cdf3 | 3304 | nes_debug(NES_DBG_CM, "mpa private data len =%u\n", |
615eb715 | 3305 | conn_param->private_data_len); |
3c2d774c | 3306 | |
24d44a39 SW |
3307 | if (laddr->sin_addr.s_addr != raddr->sin_addr.s_addr) { |
3308 | nes_manage_apbvt(nesvnic, ntohs(laddr->sin_port), | |
3309 | PCI_FUNC(nesdev->pcidev->devfn), | |
3310 | NES_MANAGE_APBVT_ADD); | |
53094c38 FL |
3311 | apbvt_set = 1; |
3312 | } | |
3c2d774c GS |
3313 | |
3314 | /* set up the connection params for the node */ | |
24d44a39 SW |
3315 | cm_info.loc_addr = htonl(laddr->sin_addr.s_addr); |
3316 | cm_info.loc_port = htons(laddr->sin_port); | |
3317 | cm_info.rem_addr = htonl(raddr->sin_addr.s_addr); | |
3318 | cm_info.rem_port = htons(raddr->sin_port); | |
3c2d774c GS |
3319 | cm_info.cm_id = cm_id; |
3320 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3321 | ||
3322 | cm_id->add_ref(cm_id); | |
3c2d774c GS |
3323 | |
3324 | /* create a connect CM node connection */ | |
6492cdf3 | 3325 | cm_node = g_cm_core->api->connect(g_cm_core, nesvnic, |
615eb715 TN |
3326 | conn_param->private_data_len, (void *)conn_param->private_data, |
3327 | &cm_info); | |
3c2d774c | 3328 | if (!cm_node) { |
53094c38 | 3329 | if (apbvt_set) |
24d44a39 | 3330 | nes_manage_apbvt(nesvnic, ntohs(laddr->sin_port), |
615eb715 TN |
3331 | PCI_FUNC(nesdev->pcidev->devfn), |
3332 | NES_MANAGE_APBVT_DEL); | |
6492cdf3 | 3333 | |
3c2d774c GS |
3334 | cm_id->rem_ref(cm_id); |
3335 | return -ENOMEM; | |
3336 | } | |
3337 | ||
53094c38 | 3338 | cm_node->apbvt_set = apbvt_set; |
3c2d774c | 3339 | nesqp->cm_node = cm_node; |
6492cdf3 | 3340 | cm_node->nesqp = nesqp; |
d7ffd507 | 3341 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3342 | |
3343 | return 0; | |
3344 | } | |
3345 | ||
3346 | ||
3347 | /** | |
3348 | * nes_create_listen | |
3349 | */ | |
3350 | int nes_create_listen(struct iw_cm_id *cm_id, int backlog) | |
3351 | { | |
3352 | struct nes_vnic *nesvnic; | |
3353 | struct nes_cm_listener *cm_node; | |
3354 | struct nes_cm_info cm_info; | |
3c2d774c | 3355 | int err; |
24d44a39 | 3356 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3c2d774c | 3357 | |
3c2d774c | 3358 | nes_debug(NES_DBG_CM, "cm_id = %p, local port = 0x%04X.\n", |
24d44a39 | 3359 | cm_id, ntohs(laddr->sin_port)); |
3c2d774c | 3360 | |
24d44a39 SW |
3361 | if (cm_id->local_addr.ss_family != AF_INET) |
3362 | return -ENOSYS; | |
3c2d774c GS |
3363 | nesvnic = to_nesvnic(cm_id->device); |
3364 | if (!nesvnic) | |
3365 | return -EINVAL; | |
69d51023 | 3366 | |
3c2d774c GS |
3367 | nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n", |
3368 | nesvnic, nesvnic->netdev, nesvnic->netdev->name); | |
3369 | ||
3370 | nes_debug(NES_DBG_CM, "nesvnic->local_ipaddr=0x%08x, sin_addr.s_addr=0x%08x\n", | |
24d44a39 | 3371 | nesvnic->local_ipaddr, laddr->sin_addr.s_addr); |
3c2d774c GS |
3372 | |
3373 | /* setup listen params in our api call struct */ | |
3374 | cm_info.loc_addr = nesvnic->local_ipaddr; | |
24d44a39 | 3375 | cm_info.loc_port = laddr->sin_port; |
3c2d774c GS |
3376 | cm_info.backlog = backlog; |
3377 | cm_info.cm_id = cm_id; | |
3378 | ||
3379 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3380 | ||
3381 | ||
3382 | cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info); | |
3383 | if (!cm_node) { | |
6492cdf3 | 3384 | printk(KERN_ERR "%s[%u] Error returned from listen API call\n", |
615eb715 | 3385 | __func__, __LINE__); |
3c2d774c GS |
3386 | return -ENOMEM; |
3387 | } | |
3388 | ||
3389 | cm_id->provider_data = cm_node; | |
3390 | ||
3391 | if (!cm_node->reused_node) { | |
24d44a39 | 3392 | err = nes_manage_apbvt(nesvnic, ntohs(laddr->sin_port), |
615eb715 TN |
3393 | PCI_FUNC(nesvnic->nesdev->pcidev->devfn), |
3394 | NES_MANAGE_APBVT_ADD); | |
3c2d774c | 3395 | if (err) { |
6492cdf3 | 3396 | printk(KERN_ERR "nes_manage_apbvt call returned %d.\n", |
615eb715 | 3397 | err); |
3c2d774c GS |
3398 | g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); |
3399 | return err; | |
3400 | } | |
6e10d2e4 | 3401 | atomic_inc(&cm_listens_created); |
3c2d774c GS |
3402 | } |
3403 | ||
3404 | cm_id->add_ref(cm_id); | |
3405 | cm_id->provider_data = (void *)cm_node; | |
3406 | ||
3407 | ||
3408 | return 0; | |
3409 | } | |
3410 | ||
3411 | ||
3412 | /** | |
3413 | * nes_destroy_listen | |
3414 | */ | |
3415 | int nes_destroy_listen(struct iw_cm_id *cm_id) | |
3416 | { | |
3417 | if (cm_id->provider_data) | |
3418 | g_cm_core->api->stop_listener(g_cm_core, cm_id->provider_data); | |
3419 | else | |
3420 | nes_debug(NES_DBG_CM, "cm_id->provider_data was NULL\n"); | |
3421 | ||
3422 | cm_id->rem_ref(cm_id); | |
3423 | ||
3424 | return 0; | |
3425 | } | |
3426 | ||
3427 | ||
3428 | /** | |
3429 | * nes_cm_recv | |
3430 | */ | |
3431 | int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice) | |
3432 | { | |
4a14f6a7 | 3433 | int rc = 0; |
615eb715 | 3434 | |
3c2d774c | 3435 | cm_packets_received++; |
615eb715 | 3436 | if ((g_cm_core) && (g_cm_core->api)) |
4a14f6a7 | 3437 | rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb); |
615eb715 | 3438 | else |
3c2d774c | 3439 | nes_debug(NES_DBG_CM, "Unable to process packet for CM," |
615eb715 | 3440 | " cm is not setup properly.\n"); |
3c2d774c | 3441 | |
4a14f6a7 | 3442 | return rc; |
3c2d774c GS |
3443 | } |
3444 | ||
3445 | ||
3446 | /** | |
3447 | * nes_cm_start | |
3448 | * Start and init a cm core module | |
3449 | */ | |
3450 | int nes_cm_start(void) | |
3451 | { | |
3452 | nes_debug(NES_DBG_CM, "\n"); | |
3453 | /* create the primary CM core, pass this handle to subsequent core inits */ | |
3454 | g_cm_core = nes_cm_alloc_core(); | |
615eb715 | 3455 | if (g_cm_core) |
3c2d774c | 3456 | return 0; |
615eb715 | 3457 | else |
3c2d774c | 3458 | return -ENOMEM; |
3c2d774c GS |
3459 | } |
3460 | ||
3461 | ||
3462 | /** | |
3463 | * nes_cm_stop | |
3464 | * stop and dealloc all cm core instances | |
3465 | */ | |
3466 | int nes_cm_stop(void) | |
3467 | { | |
3468 | g_cm_core->api->destroy_cm_core(g_cm_core); | |
3469 | return 0; | |
3470 | } | |
3471 | ||
3472 | ||
3473 | /** | |
3474 | * cm_event_connected | |
3475 | * handle a connected event, setup QPs and HW | |
3476 | */ | |
1a855fbf | 3477 | static void cm_event_connected(struct nes_cm_event *event) |
3c2d774c | 3478 | { |
3c2d774c GS |
3479 | struct nes_qp *nesqp; |
3480 | struct nes_vnic *nesvnic; | |
3481 | struct nes_device *nesdev; | |
3482 | struct nes_cm_node *cm_node; | |
3483 | struct nes_adapter *nesadapter; | |
3484 | struct ib_qp_attr attr; | |
3485 | struct iw_cm_id *cm_id; | |
3486 | struct iw_cm_event cm_event; | |
3c2d774c | 3487 | struct nes_v4_quad nes_quad; |
30da7cff | 3488 | u32 crc_value; |
3c2d774c | 3489 | int ret; |
24d44a39 SW |
3490 | struct sockaddr_in *laddr; |
3491 | struct sockaddr_in *raddr; | |
3492 | struct sockaddr_in *cm_event_laddr; | |
3c2d774c GS |
3493 | |
3494 | /* get all our handles */ | |
3495 | cm_node = event->cm_node; | |
3496 | cm_id = cm_node->cm_id; | |
3497 | nes_debug(NES_DBG_CM, "cm_event_connected - %p - cm_id = %p\n", cm_node, cm_id); | |
3498 | nesqp = (struct nes_qp *)cm_id->provider_data; | |
3499 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3500 | nesdev = nesvnic->nesdev; | |
3501 | nesadapter = nesdev->nesadapter; | |
24d44a39 SW |
3502 | laddr = (struct sockaddr_in *)&cm_id->local_addr; |
3503 | raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
3504 | cm_event_laddr = (struct sockaddr_in *)&cm_event.local_addr; | |
3c2d774c | 3505 | |
615eb715 | 3506 | if (nesqp->destroyed) |
3c2d774c | 3507 | return; |
3c2d774c GS |
3508 | atomic_inc(&cm_connecteds); |
3509 | nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" | |
615eb715 | 3510 | " local port 0x%04X. jiffies = %lu.\n", |
24d44a39 SW |
3511 | nesqp->hwqp.qp_id, ntohl(raddr->sin_addr.s_addr), |
3512 | ntohs(raddr->sin_port), ntohs(laddr->sin_port), jiffies); | |
3c2d774c GS |
3513 | |
3514 | nes_cm_init_tsa_conn(nesqp, cm_node); | |
3515 | ||
3516 | /* set the QP tsa context */ | |
24d44a39 SW |
3517 | nesqp->nesqp_context->tcpPorts[0] = cpu_to_le16(ntohs(laddr->sin_port)); |
3518 | nesqp->nesqp_context->tcpPorts[1] = cpu_to_le16(ntohs(raddr->sin_port)); | |
3519 | nesqp->nesqp_context->ip0 = cpu_to_le32(ntohl(raddr->sin_addr.s_addr)); | |
3c2d774c GS |
3520 | |
3521 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
6492cdf3 FL |
3522 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3523 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3524 | nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32( |
6492cdf3 FL |
3525 | nes_arp_table(nesdev, |
3526 | le32_to_cpu(nesqp->nesqp_context->ip0), | |
3c2d774c GS |
3527 | NULL, NES_ARP_RESOLVE) << 16); |
3528 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
3529 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); | |
3530 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3531 | nesqp->nesqp_context->ird_ord_sizes |= | |
6492cdf3 FL |
3532 | cpu_to_le32((u32)1 << |
3533 | NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT); | |
3c2d774c GS |
3534 | |
3535 | /* Adjust tail for not having a LSMM */ | |
615eb715 | 3536 | /*nesqp->hwqp.sq_tail = 1;*/ |
3c2d774c | 3537 | |
615eb715 | 3538 | build_rdma0_msg(cm_node, &nesqp); |
6492cdf3 | 3539 | |
615eb715 TN |
3540 | nes_write32(nesdev->regs + NES_WQE_ALLOC, |
3541 | (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); | |
3c2d774c GS |
3542 | |
3543 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
3544 | ||
6492cdf3 FL |
3545 | nes_quad.DstIpAdrIndex = |
3546 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
24d44a39 SW |
3547 | nes_quad.SrcIpadr = raddr->sin_addr.s_addr; |
3548 | nes_quad.TcpPorts[0] = raddr->sin_port; | |
3549 | nes_quad.TcpPorts[1] = laddr->sin_port; | |
3c2d774c GS |
3550 | |
3551 | /* Produce hash key */ | |
30da7cff FL |
3552 | crc_value = get_crc_value(&nes_quad); |
3553 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3554 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, After CRC = 0x%08X\n", |
615eb715 | 3555 | nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask); |
3c2d774c GS |
3556 | |
3557 | nesqp->hte_index &= nesadapter->hte_index_mask; | |
3558 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3559 | ||
3560 | nesqp->ietf_frame = &cm_node->mpa_frame; | |
615eb715 | 3561 | nesqp->private_data_len = (u8)cm_node->mpa_frame_size; |
3c2d774c GS |
3562 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); |
3563 | ||
3c2d774c GS |
3564 | /* notify OF layer we successfully created the requested connection */ |
3565 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
d0c49bf3 | 3566 | cm_event.status = 0; |
3c2d774c | 3567 | cm_event.provider_data = cm_id->provider_data; |
24d44a39 SW |
3568 | cm_event_laddr->sin_family = AF_INET; |
3569 | cm_event_laddr->sin_port = laddr->sin_port; | |
3c2d774c GS |
3570 | cm_event.remote_addr = cm_id->remote_addr; |
3571 | ||
6492cdf3 | 3572 | cm_event.private_data = (void *)event->cm_node->mpa_frame_buf; |
615eb715 TN |
3573 | cm_event.private_data_len = (u8)event->cm_node->mpa_frame_size; |
3574 | cm_event.ird = cm_node->ird_size; | |
3575 | cm_event.ord = cm_node->ord_size; | |
3c2d774c | 3576 | |
24d44a39 | 3577 | cm_event_laddr->sin_addr.s_addr = event->cm_info.rem_addr; |
3c2d774c GS |
3578 | ret = cm_id->event_handler(cm_id, &cm_event); |
3579 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3580 | ||
3581 | if (ret) | |
6492cdf3 | 3582 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3583 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 FL |
3584 | attr.qp_state = IB_QPS_RTS; |
3585 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3586 | |
6492cdf3 | 3587 | nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = " |
615eb715 | 3588 | "%lu\n", nesqp->hwqp.qp_id, jiffies); |
3c2d774c GS |
3589 | |
3590 | return; | |
3591 | } | |
3592 | ||
3593 | ||
3594 | /** | |
3595 | * cm_event_connect_error | |
3596 | */ | |
1a855fbf | 3597 | static void cm_event_connect_error(struct nes_cm_event *event) |
3c2d774c GS |
3598 | { |
3599 | struct nes_qp *nesqp; | |
3600 | struct iw_cm_id *cm_id; | |
3601 | struct iw_cm_event cm_event; | |
3602 | /* struct nes_cm_info cm_info; */ | |
3603 | int ret; | |
3604 | ||
3605 | if (!event->cm_node) | |
3606 | return; | |
3607 | ||
3608 | cm_id = event->cm_node->cm_id; | |
615eb715 | 3609 | if (!cm_id) |
3c2d774c | 3610 | return; |
3c2d774c GS |
3611 | |
3612 | nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id); | |
3613 | nesqp = cm_id->provider_data; | |
3614 | ||
615eb715 | 3615 | if (!nesqp) |
3c2d774c | 3616 | return; |
3c2d774c GS |
3617 | |
3618 | /* notify OF layer about this connection error event */ | |
3619 | /* cm_id->rem_ref(cm_id); */ | |
3620 | nesqp->cm_id = NULL; | |
3621 | cm_id->provider_data = NULL; | |
3622 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
c5a7d489 | 3623 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3624 | cm_event.provider_data = cm_id->provider_data; |
3625 | cm_event.local_addr = cm_id->local_addr; | |
3626 | cm_event.remote_addr = cm_id->remote_addr; | |
3627 | cm_event.private_data = NULL; | |
3628 | cm_event.private_data_len = 0; | |
3629 | ||
24d44a39 SW |
3630 | #ifdef CONFIG_INFINIBAND_NES_DEBUG |
3631 | { | |
3632 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) | |
3633 | &cm_event.local_addr; | |
3634 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
3635 | &cm_event.remote_addr; | |
3636 | nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, remote_addr=%08x\n", | |
3637 | cm_event_laddr->sin_addr.s_addr, cm_event_raddr->sin_addr.s_addr); | |
3638 | } | |
3639 | #endif | |
3c2d774c GS |
3640 | |
3641 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3642 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3643 | if (ret) | |
6492cdf3 | 3644 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3645 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 | 3646 | cm_id->rem_ref(cm_id); |
3c2d774c | 3647 | |
6492cdf3 | 3648 | rem_ref_cm_node(event->cm_node->cm_core, event->cm_node); |
3c2d774c GS |
3649 | return; |
3650 | } | |
3651 | ||
3652 | ||
3653 | /** | |
3654 | * cm_event_reset | |
3655 | */ | |
1a855fbf | 3656 | static void cm_event_reset(struct nes_cm_event *event) |
3c2d774c GS |
3657 | { |
3658 | struct nes_qp *nesqp; | |
3659 | struct iw_cm_id *cm_id; | |
3660 | struct iw_cm_event cm_event; | |
3661 | /* struct nes_cm_info cm_info; */ | |
3662 | int ret; | |
3663 | ||
3664 | if (!event->cm_node) | |
3665 | return; | |
3666 | ||
3667 | if (!event->cm_node->cm_id) | |
3668 | return; | |
3669 | ||
3670 | cm_id = event->cm_node->cm_id; | |
3671 | ||
3672 | nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id); | |
3673 | nesqp = cm_id->provider_data; | |
f9f3f1e0 FL |
3674 | if (!nesqp) |
3675 | return; | |
3c2d774c GS |
3676 | |
3677 | nesqp->cm_id = NULL; | |
3678 | /* cm_id->provider_data = NULL; */ | |
3679 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
d0c49bf3 | 3680 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3681 | cm_event.provider_data = cm_id->provider_data; |
3682 | cm_event.local_addr = cm_id->local_addr; | |
3683 | cm_event.remote_addr = cm_id->remote_addr; | |
3684 | cm_event.private_data = NULL; | |
3685 | cm_event.private_data_len = 0; | |
3686 | ||
183ecfa3 | 3687 | cm_id->add_ref(cm_id); |
f9f3f1e0 | 3688 | ret = cm_id->event_handler(cm_id, &cm_event); |
183ecfa3 FL |
3689 | atomic_inc(&cm_closes); |
3690 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 3691 | cm_event.status = 0; |
183ecfa3 FL |
3692 | cm_event.provider_data = cm_id->provider_data; |
3693 | cm_event.local_addr = cm_id->local_addr; | |
3694 | cm_event.remote_addr = cm_id->remote_addr; | |
3695 | cm_event.private_data = NULL; | |
3696 | cm_event.private_data_len = 0; | |
3697 | nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node); | |
3698 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3699 | ||
3c2d774c GS |
3700 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3701 | ||
3702 | ||
3703 | /* notify OF layer about this connection error event */ | |
3704 | cm_id->rem_ref(cm_id); | |
3705 | ||
3706 | return; | |
3707 | } | |
3708 | ||
3709 | ||
3710 | /** | |
3711 | * cm_event_mpa_req | |
3712 | */ | |
1a855fbf | 3713 | static void cm_event_mpa_req(struct nes_cm_event *event) |
3c2d774c | 3714 | { |
615eb715 | 3715 | struct iw_cm_id *cm_id; |
3c2d774c GS |
3716 | struct iw_cm_event cm_event; |
3717 | int ret; | |
3718 | struct nes_cm_node *cm_node; | |
24d44a39 SW |
3719 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) |
3720 | &cm_event.local_addr; | |
3721 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
3722 | &cm_event.remote_addr; | |
3c2d774c GS |
3723 | |
3724 | cm_node = event->cm_node; | |
3725 | if (!cm_node) | |
3726 | return; | |
3727 | cm_id = cm_node->cm_id; | |
3728 | ||
3729 | atomic_inc(&cm_connect_reqs); | |
3730 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 3731 | cm_node, cm_id, jiffies); |
3c2d774c GS |
3732 | |
3733 | cm_event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
d0c49bf3 | 3734 | cm_event.status = 0; |
3c2d774c GS |
3735 | cm_event.provider_data = (void *)cm_node; |
3736 | ||
24d44a39 SW |
3737 | cm_event_laddr->sin_family = AF_INET; |
3738 | cm_event_laddr->sin_port = htons(event->cm_info.loc_port); | |
3739 | cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
3c2d774c | 3740 | |
24d44a39 SW |
3741 | cm_event_raddr->sin_family = AF_INET; |
3742 | cm_event_raddr->sin_port = htons(event->cm_info.rem_port); | |
3743 | cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
9d5ab133 | 3744 | cm_event.private_data = cm_node->mpa_frame_buf; |
615eb715 TN |
3745 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
3746 | cm_event.ird = cm_node->ird_size; | |
3747 | cm_event.ord = cm_node->ord_size; | |
9d5ab133 FL |
3748 | |
3749 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3750 | if (ret) | |
3751 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", | |
615eb715 | 3752 | __func__, __LINE__, ret); |
9d5ab133 FL |
3753 | return; |
3754 | } | |
3755 | ||
3756 | ||
3757 | static void cm_event_mpa_reject(struct nes_cm_event *event) | |
3758 | { | |
615eb715 | 3759 | struct iw_cm_id *cm_id; |
9d5ab133 FL |
3760 | struct iw_cm_event cm_event; |
3761 | struct nes_cm_node *cm_node; | |
3762 | int ret; | |
24d44a39 SW |
3763 | struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) |
3764 | &cm_event.local_addr; | |
3765 | struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) | |
3766 | &cm_event.remote_addr; | |
9d5ab133 FL |
3767 | |
3768 | cm_node = event->cm_node; | |
3769 | if (!cm_node) | |
3770 | return; | |
3771 | cm_id = cm_node->cm_id; | |
3772 | ||
3773 | atomic_inc(&cm_connect_reqs); | |
3774 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 3775 | cm_node, cm_id, jiffies); |
9d5ab133 FL |
3776 | |
3777 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
3778 | cm_event.status = -ECONNREFUSED; | |
3779 | cm_event.provider_data = cm_id->provider_data; | |
3780 | ||
24d44a39 SW |
3781 | cm_event_laddr->sin_family = AF_INET; |
3782 | cm_event_laddr->sin_port = htons(event->cm_info.loc_port); | |
3783 | cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
9d5ab133 | 3784 | |
24d44a39 SW |
3785 | cm_event_raddr->sin_family = AF_INET; |
3786 | cm_event_raddr->sin_port = htons(event->cm_info.rem_port); | |
3787 | cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
3c2d774c | 3788 | |
9d5ab133 | 3789 | cm_event.private_data = cm_node->mpa_frame_buf; |
615eb715 | 3790 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
9d5ab133 FL |
3791 | |
3792 | nes_debug(NES_DBG_CM, "call CM_EVENT_MPA_REJECTED, local_addr=%08x, " | |
615eb715 | 3793 | "remove_addr=%08x\n", |
24d44a39 SW |
3794 | cm_event_laddr->sin_addr.s_addr, |
3795 | cm_event_raddr->sin_addr.s_addr); | |
3c2d774c GS |
3796 | |
3797 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3798 | if (ret) | |
9d5ab133 | 3799 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", |
615eb715 | 3800 | __func__, __LINE__, ret); |
3c2d774c GS |
3801 | |
3802 | return; | |
3803 | } | |
3804 | ||
3805 | ||
3806 | static void nes_cm_event_handler(struct work_struct *); | |
3807 | ||
3808 | /** | |
3809 | * nes_cm_post_event | |
3810 | * post an event to the cm event handler | |
3811 | */ | |
1a855fbf | 3812 | static int nes_cm_post_event(struct nes_cm_event *event) |
3c2d774c GS |
3813 | { |
3814 | atomic_inc(&event->cm_node->cm_core->events_posted); | |
3815 | add_ref_cm_node(event->cm_node); | |
3816 | event->cm_info.cm_id->add_ref(event->cm_info.cm_id); | |
3817 | INIT_WORK(&event->event_work, nes_cm_event_handler); | |
6492cdf3 | 3818 | nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n", |
615eb715 | 3819 | event->cm_node, event); |
3c2d774c GS |
3820 | |
3821 | queue_work(event->cm_node->cm_core->event_wq, &event->event_work); | |
3822 | ||
3823 | nes_debug(NES_DBG_CM, "Exit\n"); | |
3824 | return 0; | |
3825 | } | |
3826 | ||
3827 | ||
3828 | /** | |
3829 | * nes_cm_event_handler | |
3830 | * worker function to handle cm events | |
3831 | * will free instance of nes_cm_event | |
3832 | */ | |
3833 | static void nes_cm_event_handler(struct work_struct *work) | |
3834 | { | |
6492cdf3 | 3835 | struct nes_cm_event *event = container_of(work, struct nes_cm_event, |
615eb715 | 3836 | event_work); |
3c2d774c GS |
3837 | struct nes_cm_core *cm_core; |
3838 | ||
6492cdf3 | 3839 | if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core)) |
3c2d774c | 3840 | return; |
6492cdf3 | 3841 | |
3c2d774c GS |
3842 | cm_core = event->cm_node->cm_core; |
3843 | nes_debug(NES_DBG_CM, "event=%p, event->type=%u, events posted=%u\n", | |
615eb715 | 3844 | event, event->type, atomic_read(&cm_core->events_posted)); |
3c2d774c GS |
3845 | |
3846 | switch (event->type) { | |
6492cdf3 FL |
3847 | case NES_CM_EVENT_MPA_REQ: |
3848 | cm_event_mpa_req(event); | |
3849 | nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n", | |
615eb715 | 3850 | event->cm_node); |
6492cdf3 FL |
3851 | break; |
3852 | case NES_CM_EVENT_RESET: | |
3853 | nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n", | |
615eb715 | 3854 | event->cm_node); |
6492cdf3 FL |
3855 | cm_event_reset(event); |
3856 | break; | |
3857 | case NES_CM_EVENT_CONNECTED: | |
3858 | if ((!event->cm_node->cm_id) || | |
615eb715 | 3859 | (event->cm_node->state != NES_CM_STATE_TSA)) |
3c2d774c | 3860 | break; |
6492cdf3 FL |
3861 | cm_event_connected(event); |
3862 | nes_debug(NES_DBG_CM, "CM Event: CONNECTED\n"); | |
3863 | break; | |
9d5ab133 FL |
3864 | case NES_CM_EVENT_MPA_REJECT: |
3865 | if ((!event->cm_node->cm_id) || | |
615eb715 | 3866 | (event->cm_node->state == NES_CM_STATE_TSA)) |
9d5ab133 FL |
3867 | break; |
3868 | cm_event_mpa_reject(event); | |
3869 | nes_debug(NES_DBG_CM, "CM Event: REJECT\n"); | |
3870 | break; | |
3871 | ||
6492cdf3 FL |
3872 | case NES_CM_EVENT_ABORTED: |
3873 | if ((!event->cm_node->cm_id) || | |
615eb715 | 3874 | (event->cm_node->state == NES_CM_STATE_TSA)) |
3c2d774c | 3875 | break; |
6492cdf3 FL |
3876 | cm_event_connect_error(event); |
3877 | nes_debug(NES_DBG_CM, "CM Event: ABORTED\n"); | |
3878 | break; | |
3879 | case NES_CM_EVENT_DROPPED_PKT: | |
3880 | nes_debug(NES_DBG_CM, "CM Event: DROPPED PKT\n"); | |
3881 | break; | |
3882 | default: | |
3883 | nes_debug(NES_DBG_CM, "CM Event: UNKNOWN EVENT TYPE\n"); | |
3884 | break; | |
3c2d774c GS |
3885 | } |
3886 | ||
3887 | atomic_dec(&cm_core->events_posted); | |
3888 | event->cm_info.cm_id->rem_ref(event->cm_info.cm_id); | |
3889 | rem_ref_cm_node(cm_core, event->cm_node); | |
3890 | kfree(event); | |
3891 | ||
3892 | return; | |
3893 | } |