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3c2d774c | 1 | /* |
fa6c87d5 | 2 | * Copyright (c) 2006 - 2009 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; | |
9d5ab133 FL |
236 | |
237 | skb = dev_alloc_skb(MAX_CM_BUFFER); | |
238 | if (!skb) { | |
239 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
240 | return -ENOMEM; | |
241 | } | |
242 | ||
243 | /* send an MPA reject frame */ | |
615eb715 TN |
244 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REPLY); |
245 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK | SET_FIN); | |
9d5ab133 FL |
246 | |
247 | cm_node->state = NES_CM_STATE_FIN_WAIT1; | |
248 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
3c2d774c GS |
249 | } |
250 | ||
251 | ||
252 | /** | |
253 | * recv_mpa - process a received TCP pkt, we are expecting an | |
254 | * IETF MPA frame | |
255 | */ | |
9d5ab133 | 256 | static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type, |
615eb715 | 257 | u32 len) |
3c2d774c | 258 | { |
615eb715 TN |
259 | struct ietf_mpa_v1 *mpa_frame; |
260 | struct ietf_mpa_v2 *mpa_v2_frame; | |
261 | struct ietf_rtr_msg *rtr_msg; | |
262 | int mpa_hdr_len; | |
263 | int priv_data_len; | |
3c2d774c | 264 | |
9d5ab133 FL |
265 | *type = NES_MPA_REQUEST_ACCEPT; |
266 | ||
3c2d774c | 267 | /* assume req frame is in tcp data payload */ |
615eb715 | 268 | if (len < sizeof(struct ietf_mpa_v1)) { |
3c2d774c | 269 | nes_debug(NES_DBG_CM, "The received ietf buffer was too small (%x)\n", len); |
9d5ab133 | 270 | return -EINVAL; |
3c2d774c GS |
271 | } |
272 | ||
615eb715 TN |
273 | /* points to the beginning of the frame, which could be MPA V1 or V2 */ |
274 | mpa_frame = (struct ietf_mpa_v1 *)buffer; | |
275 | mpa_hdr_len = sizeof(struct ietf_mpa_v1); | |
276 | priv_data_len = ntohs(mpa_frame->priv_data_len); | |
277 | ||
1cf078c9 | 278 | /* make sure mpa private data len is less than 512 bytes */ |
615eb715 | 279 | if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) { |
1cf078c9 | 280 | nes_debug(NES_DBG_CM, "The received Length of Private" |
615eb715 | 281 | " Data field exceeds 512 octets\n"); |
1cf078c9 FL |
282 | return -EINVAL; |
283 | } | |
284 | /* | |
285 | * make sure MPA receiver interoperate with the | |
286 | * received MPA version and MPA key information | |
287 | * | |
288 | */ | |
615eb715 TN |
289 | if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) { |
290 | nes_debug(NES_DBG_CM, "The received mpa version" | |
291 | " is not supported\n"); | |
292 | return -EINVAL; | |
293 | } | |
294 | /* | |
295 | * backwards compatibility only | |
296 | */ | |
297 | if (mpa_frame->rev > cm_node->mpa_frame_rev) { | |
1cf078c9 | 298 | nes_debug(NES_DBG_CM, "The received mpa version" |
615eb715 | 299 | " can not be interoperated\n"); |
1cf078c9 | 300 | return -EINVAL; |
615eb715 TN |
301 | } else { |
302 | cm_node->mpa_frame_rev = mpa_frame->rev; | |
1cf078c9 | 303 | } |
615eb715 | 304 | |
1cf078c9 FL |
305 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { |
306 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) { | |
307 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); | |
308 | return -EINVAL; | |
309 | } | |
310 | } else { | |
311 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) { | |
312 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); | |
313 | return -EINVAL; | |
314 | } | |
315 | } | |
3c2d774c | 316 | |
615eb715 TN |
317 | |
318 | if (priv_data_len + mpa_hdr_len != len) { | |
3c2d774c | 319 | nes_debug(NES_DBG_CM, "The received ietf buffer was not right" |
615eb715 TN |
320 | " complete (%x + %x != %x)\n", |
321 | priv_data_len, mpa_hdr_len, len); | |
9d5ab133 FL |
322 | return -EINVAL; |
323 | } | |
324 | /* make sure it does not exceed the max size */ | |
325 | if (len > MAX_CM_BUFFER) { | |
326 | nes_debug(NES_DBG_CM, "The received ietf buffer was too large" | |
615eb715 TN |
327 | " (%x + %x != %x)\n", |
328 | priv_data_len, mpa_hdr_len, len); | |
9d5ab133 | 329 | return -EINVAL; |
3c2d774c GS |
330 | } |
331 | ||
615eb715 TN |
332 | cm_node->mpa_frame_size = priv_data_len; |
333 | ||
334 | switch (mpa_frame->rev) { | |
335 | case IETF_MPA_V2: { | |
336 | u16 ird_size; | |
337 | u16 ord_size; | |
338 | mpa_v2_frame = (struct ietf_mpa_v2 *)buffer; | |
339 | mpa_hdr_len += IETF_RTR_MSG_SIZE; | |
340 | cm_node->mpa_frame_size -= IETF_RTR_MSG_SIZE; | |
341 | rtr_msg = &mpa_v2_frame->rtr_msg; | |
342 | ||
343 | /* parse rtr message */ | |
344 | rtr_msg->ctrl_ird = ntohs(rtr_msg->ctrl_ird); | |
345 | rtr_msg->ctrl_ord = ntohs(rtr_msg->ctrl_ord); | |
346 | ird_size = rtr_msg->ctrl_ird & IETF_NO_IRD_ORD; | |
347 | ord_size = rtr_msg->ctrl_ord & IETF_NO_IRD_ORD; | |
348 | ||
349 | if (!(rtr_msg->ctrl_ird & IETF_PEER_TO_PEER)) { | |
350 | /* send reset */ | |
351 | return -EINVAL; | |
352 | } | |
353 | ||
354 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { | |
355 | /* responder */ | |
356 | if (cm_node->ord_size > ird_size) | |
357 | cm_node->ord_size = ird_size; | |
358 | } else { | |
359 | /* initiator */ | |
360 | if (cm_node->ord_size > ird_size) | |
361 | cm_node->ord_size = ird_size; | |
362 | ||
363 | if (cm_node->ird_size < ord_size) { | |
364 | /* no resources available */ | |
365 | /* send terminate message */ | |
366 | return -EINVAL; | |
367 | } | |
368 | } | |
369 | ||
370 | if (rtr_msg->ctrl_ord & IETF_RDMA0_READ) { | |
371 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; | |
372 | } else if (rtr_msg->ctrl_ord & IETF_RDMA0_WRITE) { | |
373 | cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO; | |
374 | } else { /* Not supported RDMA0 operation */ | |
375 | return -EINVAL; | |
376 | } | |
377 | break; | |
378 | } | |
379 | case IETF_MPA_V1: | |
380 | default: | |
381 | break; | |
382 | } | |
383 | ||
3c2d774c | 384 | /* copy entire MPA frame to our cm_node's frame */ |
615eb715 | 385 | memcpy(cm_node->mpa_frame_buf, buffer + mpa_hdr_len, cm_node->mpa_frame_size); |
3c2d774c | 386 | |
9d5ab133 FL |
387 | if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT) |
388 | *type = NES_MPA_REQUEST_REJECT; | |
3c2d774c GS |
389 | return 0; |
390 | } | |
391 | ||
392 | ||
3c2d774c GS |
393 | /** |
394 | * form_cm_frame - get a free packet and build empty frame Use | |
395 | * node info to build. | |
396 | */ | |
6098d107 | 397 | static void form_cm_frame(struct sk_buff *skb, |
615eb715 TN |
398 | struct nes_cm_node *cm_node, void *options, u32 optionsize, |
399 | void *data, u32 datasize, u8 flags) | |
3c2d774c GS |
400 | { |
401 | struct tcphdr *tcph; | |
402 | struct iphdr *iph; | |
403 | struct ethhdr *ethh; | |
404 | u8 *buf; | |
405 | u16 packetsize = sizeof(*iph); | |
406 | ||
407 | packetsize += sizeof(*tcph); | |
615eb715 | 408 | packetsize += optionsize + datasize; |
3c2d774c | 409 | |
615eb715 | 410 | skb_trim(skb, 0); |
3c2d774c GS |
411 | memset(skb->data, 0x00, ETH_HLEN + sizeof(*iph) + sizeof(*tcph)); |
412 | ||
3c2d774c GS |
413 | buf = skb_put(skb, packetsize + ETH_HLEN); |
414 | ||
615eb715 | 415 | ethh = (struct ethhdr *)buf; |
3c2d774c GS |
416 | buf += ETH_HLEN; |
417 | ||
418 | iph = (struct iphdr *)buf; | |
419 | buf += sizeof(*iph); | |
420 | tcph = (struct tcphdr *)buf; | |
421 | skb_reset_mac_header(skb); | |
422 | skb_set_network_header(skb, ETH_HLEN); | |
615eb715 | 423 | skb_set_transport_header(skb, ETH_HLEN + sizeof(*iph)); |
3c2d774c GS |
424 | buf += sizeof(*tcph); |
425 | ||
426 | skb->ip_summed = CHECKSUM_PARTIAL; | |
427 | skb->protocol = htons(0x800); | |
428 | skb->data_len = 0; | |
429 | skb->mac_len = ETH_HLEN; | |
430 | ||
431 | memcpy(ethh->h_dest, cm_node->rem_mac, ETH_ALEN); | |
432 | memcpy(ethh->h_source, cm_node->loc_mac, ETH_ALEN); | |
433 | ethh->h_proto = htons(0x0800); | |
434 | ||
435 | iph->version = IPVERSION; | |
615eb715 | 436 | iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ |
3c2d774c GS |
437 | iph->tos = 0; |
438 | iph->tot_len = htons(packetsize); | |
439 | iph->id = htons(++cm_node->tcp_cntxt.loc_id); | |
440 | ||
441 | iph->frag_off = htons(0x4000); | |
442 | iph->ttl = 0x40; | |
615eb715 | 443 | iph->protocol = 0x06; /* IPPROTO_TCP */ |
3c2d774c GS |
444 | |
445 | iph->saddr = htonl(cm_node->loc_addr); | |
446 | iph->daddr = htonl(cm_node->rem_addr); | |
447 | ||
448 | tcph->source = htons(cm_node->loc_port); | |
449 | tcph->dest = htons(cm_node->rem_port); | |
450 | tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num); | |
451 | ||
452 | if (flags & SET_ACK) { | |
453 | cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt; | |
454 | tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); | |
455 | tcph->ack = 1; | |
615eb715 | 456 | } else { |
3c2d774c | 457 | tcph->ack_seq = 0; |
615eb715 | 458 | } |
3c2d774c GS |
459 | |
460 | if (flags & SET_SYN) { | |
461 | cm_node->tcp_cntxt.loc_seq_num++; | |
462 | tcph->syn = 1; | |
615eb715 | 463 | } else { |
6492cdf3 | 464 | cm_node->tcp_cntxt.loc_seq_num += datasize; |
615eb715 | 465 | } |
3c2d774c | 466 | |
6492cdf3 FL |
467 | if (flags & SET_FIN) { |
468 | cm_node->tcp_cntxt.loc_seq_num++; | |
3c2d774c | 469 | tcph->fin = 1; |
6492cdf3 | 470 | } |
3c2d774c GS |
471 | |
472 | if (flags & SET_RST) | |
473 | tcph->rst = 1; | |
474 | ||
475 | tcph->doff = (u16)((sizeof(*tcph) + optionsize + 3) >> 2); | |
476 | tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); | |
477 | tcph->urg_ptr = 0; | |
478 | if (optionsize) | |
479 | memcpy(buf, options, optionsize); | |
480 | buf += optionsize; | |
481 | if (datasize) | |
482 | memcpy(buf, data, datasize); | |
483 | ||
484 | skb_shinfo(skb)->nr_frags = 0; | |
485 | cm_packets_created++; | |
3c2d774c GS |
486 | } |
487 | ||
3c2d774c GS |
488 | /** |
489 | * print_core - dump a cm core | |
490 | */ | |
491 | static void print_core(struct nes_cm_core *core) | |
492 | { | |
493 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
494 | nes_debug(NES_DBG_CM, "CM Core -- (core = %p )\n", core); | |
495 | if (!core) | |
496 | return; | |
497 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
3c2d774c | 498 | |
615eb715 | 499 | nes_debug(NES_DBG_CM, "State : %u \n", core->state); |
3c2d774c | 500 | |
3c2d774c GS |
501 | nes_debug(NES_DBG_CM, "Listen Nodes : %u \n", atomic_read(&core->listen_node_cnt)); |
502 | nes_debug(NES_DBG_CM, "Active Nodes : %u \n", atomic_read(&core->node_cnt)); | |
503 | ||
504 | nes_debug(NES_DBG_CM, "core : %p \n", core); | |
505 | ||
506 | nes_debug(NES_DBG_CM, "-------------- end core ---------------\n"); | |
507 | } | |
508 | ||
615eb715 TN |
509 | /** |
510 | * cm_build_mpa_frame - build a MPA V1 frame or MPA V2 frame | |
511 | */ | |
512 | static int cm_build_mpa_frame(struct nes_cm_node *cm_node, u8 **start_buff, | |
513 | u16 *buff_len, u8 *pci_mem, u8 mpa_key) | |
514 | { | |
515 | int ret = 0; | |
516 | ||
517 | *start_buff = (pci_mem) ? pci_mem : &cm_node->mpa_frame_buf[0]; | |
518 | ||
519 | switch (cm_node->mpa_frame_rev) { | |
520 | case IETF_MPA_V1: | |
521 | *start_buff = (u8 *)*start_buff + sizeof(struct ietf_rtr_msg); | |
522 | *buff_len = sizeof(struct ietf_mpa_v1) + cm_node->mpa_frame_size; | |
523 | build_mpa_v1(cm_node, *start_buff, mpa_key); | |
524 | break; | |
525 | case IETF_MPA_V2: | |
526 | *buff_len = sizeof(struct ietf_mpa_v2) + cm_node->mpa_frame_size; | |
527 | build_mpa_v2(cm_node, *start_buff, mpa_key); | |
528 | break; | |
529 | default: | |
530 | ret = -EINVAL; | |
531 | } | |
532 | return ret; | |
533 | } | |
534 | ||
535 | /** | |
536 | * build_mpa_v2 - build a MPA V2 frame | |
537 | */ | |
538 | static void build_mpa_v2(struct nes_cm_node *cm_node, | |
539 | void *start_addr, u8 mpa_key) | |
540 | { | |
541 | struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr; | |
542 | struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg; | |
543 | ||
544 | /* initialize the upper 5 bytes of the frame */ | |
545 | build_mpa_v1(cm_node, start_addr, mpa_key); | |
546 | mpa_frame->flags |= IETF_MPA_V2_FLAG; /* set a bit to indicate MPA V2 */ | |
547 | mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE); | |
548 | ||
549 | /* initialize RTR msg */ | |
550 | rtr_msg->ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ? | |
551 | IETF_NO_IRD_ORD : cm_node->ird_size; | |
552 | rtr_msg->ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ? | |
553 | IETF_NO_IRD_ORD : cm_node->ord_size; | |
554 | ||
555 | rtr_msg->ctrl_ird |= IETF_PEER_TO_PEER; | |
556 | rtr_msg->ctrl_ird |= IETF_FLPDU_ZERO_LEN; | |
557 | ||
558 | switch (mpa_key) { | |
559 | case MPA_KEY_REQUEST: | |
560 | rtr_msg->ctrl_ord |= IETF_RDMA0_WRITE; | |
561 | rtr_msg->ctrl_ord |= IETF_RDMA0_READ; | |
562 | break; | |
563 | case MPA_KEY_REPLY: | |
564 | switch (cm_node->send_rdma0_op) { | |
565 | case SEND_RDMA_WRITE_ZERO: | |
566 | rtr_msg->ctrl_ord |= IETF_RDMA0_WRITE; | |
567 | break; | |
568 | case SEND_RDMA_READ_ZERO: | |
569 | rtr_msg->ctrl_ord |= IETF_RDMA0_READ; | |
570 | break; | |
571 | } | |
572 | } | |
573 | rtr_msg->ctrl_ird = htons(rtr_msg->ctrl_ird); | |
574 | rtr_msg->ctrl_ord = htons(rtr_msg->ctrl_ord); | |
575 | } | |
576 | ||
577 | /** | |
578 | * build_mpa_v1 - build a MPA V1 frame | |
579 | */ | |
580 | static void build_mpa_v1(struct nes_cm_node *cm_node, void *start_addr, u8 mpa_key) | |
581 | { | |
582 | struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr; | |
583 | ||
584 | switch (mpa_key) { | |
585 | case MPA_KEY_REQUEST: | |
586 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE); | |
587 | break; | |
588 | case MPA_KEY_REPLY: | |
589 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE); | |
590 | break; | |
591 | } | |
592 | mpa_frame->flags = IETF_MPA_FLAGS_CRC; | |
593 | mpa_frame->rev = cm_node->mpa_frame_rev; | |
594 | mpa_frame->priv_data_len = htons(cm_node->mpa_frame_size); | |
595 | } | |
596 | ||
597 | static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_addr) | |
598 | { | |
599 | u64 u64temp; | |
600 | struct nes_qp *nesqp = *nesqp_addr; | |
601 | struct nes_hw_qp_wqe *wqe = &nesqp->hwqp.sq_vbase[0]; | |
602 | ||
603 | u64temp = (unsigned long)nesqp; | |
604 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; | |
605 | set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp); | |
606 | ||
607 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0; | |
608 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0; | |
609 | ||
610 | switch (cm_node->send_rdma0_op) { | |
611 | case SEND_RDMA_WRITE_ZERO: | |
612 | nes_debug(NES_DBG_CM, "Sending first write.\n"); | |
613 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
614 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAW); | |
615 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0; | |
616 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0; | |
617 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; | |
618 | break; | |
619 | ||
620 | case SEND_RDMA_READ_ZERO: | |
621 | default: | |
622 | if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO) { | |
623 | printk(KERN_ERR "%s[%u]: Unsupported RDMA0 len operation=%u\n", | |
624 | __func__, __LINE__, cm_node->send_rdma0_op); | |
625 | WARN_ON(1); | |
626 | } | |
627 | nes_debug(NES_DBG_CM, "Sending first rdma operation.\n"); | |
628 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
629 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAR); | |
630 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = 1; | |
631 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = 0; | |
632 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 0; | |
633 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = 1; | |
634 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 1; | |
635 | break; | |
636 | } | |
637 | ||
638 | if (nesqp->sq_kmapped) { | |
639 | nesqp->sq_kmapped = 0; | |
640 | kunmap(nesqp->page); | |
641 | } | |
642 | ||
643 | /*use the reserved spot on the WQ for the extra first WQE*/ | |
644 | nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
645 | NES_QPCONTEXT_ORDIRD_WRPDU | | |
646 | NES_QPCONTEXT_ORDIRD_ALSMM)); | |
647 | nesqp->skip_lsmm = 1; | |
648 | nesqp->hwqp.sq_tail = 0; | |
649 | } | |
3c2d774c GS |
650 | |
651 | /** | |
652 | * schedule_nes_timer | |
653 | * note - cm_node needs to be protected before calling this. Encase in: | |
654 | * rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node); | |
655 | */ | |
656 | int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 TN |
657 | enum nes_timer_type type, int send_retrans, |
658 | int close_when_complete) | |
3c2d774c | 659 | { |
615eb715 | 660 | unsigned long flags; |
6492cdf3 | 661 | struct nes_cm_core *cm_core = cm_node->cm_core; |
3c2d774c GS |
662 | struct nes_timer_entry *new_send; |
663 | int ret = 0; | |
664 | u32 was_timer_set; | |
665 | ||
666 | new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC); | |
667 | if (!new_send) | |
9d5ab133 | 668 | return -ENOMEM; |
3c2d774c GS |
669 | |
670 | /* new_send->timetosend = currenttime */ | |
671 | new_send->retrycount = NES_DEFAULT_RETRYS; | |
672 | new_send->retranscount = NES_DEFAULT_RETRANS; | |
673 | new_send->skb = skb; | |
674 | new_send->timetosend = jiffies; | |
675 | new_send->type = type; | |
676 | new_send->netdev = cm_node->netdev; | |
677 | new_send->send_retrans = send_retrans; | |
678 | new_send->close_when_complete = close_when_complete; | |
679 | ||
680 | if (type == NES_TIMER_TYPE_CLOSE) { | |
615eb715 | 681 | new_send->timetosend += (HZ / 10); |
9d5ab133 | 682 | if (cm_node->recv_entry) { |
79fc3d74 | 683 | kfree(new_send); |
9d5ab133 FL |
684 | WARN_ON(1); |
685 | return -EINVAL; | |
686 | } | |
687 | cm_node->recv_entry = new_send; | |
3c2d774c GS |
688 | } |
689 | ||
690 | if (type == NES_TIMER_TYPE_SEND) { | |
b30db1c1 | 691 | new_send->seq_num = ntohl(tcp_hdr(skb)->seq); |
3c2d774c | 692 | atomic_inc(&new_send->skb->users); |
6492cdf3 FL |
693 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
694 | cm_node->send_entry = new_send; | |
695 | add_ref_cm_node(cm_node); | |
696 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
697 | new_send->timetosend = jiffies + NES_RETRY_TIMEOUT; | |
3c2d774c GS |
698 | |
699 | ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev); | |
700 | if (ret != NETDEV_TX_OK) { | |
6492cdf3 | 701 | nes_debug(NES_DBG_CM, "Error sending packet %p " |
615eb715 | 702 | "(jiffies = %lu)\n", new_send, jiffies); |
3c2d774c | 703 | new_send->timetosend = jiffies; |
5962c2c8 | 704 | ret = NETDEV_TX_OK; |
3c2d774c GS |
705 | } else { |
706 | cm_packets_sent++; | |
707 | if (!send_retrans) { | |
6492cdf3 | 708 | cleanup_retrans_entry(cm_node); |
3c2d774c | 709 | if (close_when_complete) |
6492cdf3 | 710 | rem_ref_cm_node(cm_core, cm_node); |
3c2d774c GS |
711 | return ret; |
712 | } | |
3c2d774c | 713 | } |
3c2d774c | 714 | } |
3c2d774c GS |
715 | |
716 | was_timer_set = timer_pending(&cm_core->tcp_timer); | |
717 | ||
718 | if (!was_timer_set) { | |
719 | cm_core->tcp_timer.expires = new_send->timetosend; | |
720 | add_timer(&cm_core->tcp_timer); | |
721 | } | |
722 | ||
723 | return ret; | |
724 | } | |
725 | ||
9d5ab133 FL |
726 | static void nes_retrans_expired(struct nes_cm_node *cm_node) |
727 | { | |
68237a0f | 728 | struct iw_cm_id *cm_id = cm_node->cm_id; |
dae58728 FL |
729 | enum nes_cm_node_state state = cm_node->state; |
730 | cm_node->state = NES_CM_STATE_CLOSED; | |
615eb715 | 731 | |
dae58728 | 732 | switch (state) { |
9d5ab133 FL |
733 | case NES_CM_STATE_SYN_RCVD: |
734 | case NES_CM_STATE_CLOSING: | |
735 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
736 | break; | |
737 | case NES_CM_STATE_LAST_ACK: | |
738 | case NES_CM_STATE_FIN_WAIT1: | |
68237a0f FL |
739 | if (cm_node->cm_id) |
740 | cm_id->rem_ref(cm_id); | |
9d5ab133 FL |
741 | send_reset(cm_node, NULL); |
742 | break; | |
743 | default: | |
69524e1a FL |
744 | add_ref_cm_node(cm_node); |
745 | send_reset(cm_node, NULL); | |
9d5ab133 FL |
746 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
747 | } | |
748 | } | |
749 | ||
750 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node) | |
751 | { | |
752 | struct nes_timer_entry *recv_entry = cm_node->recv_entry; | |
753 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
754 | struct nes_qp *nesqp; | |
755 | unsigned long qplockflags; | |
756 | ||
757 | if (!recv_entry) | |
758 | return; | |
759 | nesqp = (struct nes_qp *)recv_entry->skb; | |
760 | if (nesqp) { | |
761 | spin_lock_irqsave(&nesqp->lock, qplockflags); | |
762 | if (nesqp->cm_id) { | |
763 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
764 | "refcount = %d: HIT A " |
765 | "NES_TIMER_TYPE_CLOSE with something " | |
766 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
767 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
768 | nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; |
769 | nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; | |
770 | nesqp->ibqp_state = IB_QPS_ERR; | |
771 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
772 | nes_cm_disconn(nesqp); | |
773 | } else { | |
774 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
775 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
776 | "refcount = %d: HIT A " |
777 | "NES_TIMER_TYPE_CLOSE with nothing " | |
778 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
779 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
780 | } |
781 | } else if (rem_node) { | |
782 | /* TIME_WAIT state */ | |
783 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
784 | } | |
785 | if (cm_node->cm_id) | |
786 | cm_id->rem_ref(cm_id); | |
787 | kfree(recv_entry); | |
788 | cm_node->recv_entry = NULL; | |
789 | } | |
3c2d774c GS |
790 | |
791 | /** | |
792 | * nes_cm_timer_tick | |
793 | */ | |
1a855fbf | 794 | static void nes_cm_timer_tick(unsigned long pass) |
3c2d774c | 795 | { |
9d5ab133 | 796 | unsigned long flags; |
3c2d774c | 797 | unsigned long nexttimeout = jiffies + NES_LONG_TIME; |
3c2d774c GS |
798 | struct nes_cm_node *cm_node; |
799 | struct nes_timer_entry *send_entry, *recv_entry; | |
9d5ab133 FL |
800 | struct list_head *list_core_temp; |
801 | struct list_head *list_node; | |
3c2d774c | 802 | struct nes_cm_core *cm_core = g_cm_core; |
3c2d774c | 803 | u32 settimer = 0; |
4e9c3900 | 804 | unsigned long timetosend; |
3c2d774c | 805 | int ret = NETDEV_TX_OK; |
3c2d774c | 806 | |
879e5bd5 | 807 | struct list_head timer_list; |
615eb715 | 808 | |
879e5bd5 | 809 | INIT_LIST_HEAD(&timer_list); |
3c2d774c GS |
810 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
811 | ||
6492cdf3 | 812 | list_for_each_safe(list_node, list_core_temp, |
615eb715 | 813 | &cm_core->connected_nodes) { |
3c2d774c | 814 | cm_node = container_of(list_node, struct nes_cm_node, list); |
9d5ab133 | 815 | if ((cm_node->recv_entry) || (cm_node->send_entry)) { |
879e5bd5 FL |
816 | add_ref_cm_node(cm_node); |
817 | list_add(&cm_node->timer_entry, &timer_list); | |
818 | } | |
819 | } | |
820 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
821 | ||
822 | list_for_each_safe(list_node, list_core_temp, &timer_list) { | |
823 | cm_node = container_of(list_node, struct nes_cm_node, | |
615eb715 | 824 | timer_entry); |
9d5ab133 FL |
825 | recv_entry = cm_node->recv_entry; |
826 | ||
827 | if (recv_entry) { | |
6492cdf3 FL |
828 | if (time_after(recv_entry->timetosend, jiffies)) { |
829 | if (nexttimeout > recv_entry->timetosend || | |
615eb715 | 830 | !settimer) { |
3c2d774c GS |
831 | nexttimeout = recv_entry->timetosend; |
832 | settimer = 1; | |
833 | } | |
615eb715 | 834 | } else { |
9d5ab133 | 835 | handle_recv_entry(cm_node, 1); |
615eb715 | 836 | } |
3c2d774c | 837 | } |
3c2d774c GS |
838 | |
839 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); | |
6492cdf3 FL |
840 | do { |
841 | send_entry = cm_node->send_entry; | |
842 | if (!send_entry) | |
c5d321e5 | 843 | break; |
3c2d774c GS |
844 | if (time_after(send_entry->timetosend, jiffies)) { |
845 | if (cm_node->state != NES_CM_STATE_TSA) { | |
6492cdf3 | 846 | if ((nexttimeout > |
615eb715 TN |
847 | send_entry->timetosend) || |
848 | !settimer) { | |
6492cdf3 FL |
849 | nexttimeout = |
850 | send_entry->timetosend; | |
3c2d774c GS |
851 | settimer = 1; |
852 | } | |
3c2d774c | 853 | } else { |
6492cdf3 | 854 | free_retrans_entry(cm_node); |
3c2d774c | 855 | } |
9d5ab133 | 856 | break; |
3c2d774c | 857 | } |
6492cdf3 FL |
858 | |
859 | if ((cm_node->state == NES_CM_STATE_TSA) || | |
615eb715 | 860 | (cm_node->state == NES_CM_STATE_CLOSED)) { |
6492cdf3 | 861 | free_retrans_entry(cm_node); |
c5d321e5 | 862 | break; |
3c2d774c GS |
863 | } |
864 | ||
6492cdf3 | 865 | if (!send_entry->retranscount || |
615eb715 | 866 | !send_entry->retrycount) { |
3c2d774c | 867 | cm_packets_dropped++; |
6492cdf3 | 868 | free_retrans_entry(cm_node); |
9d5ab133 | 869 | |
6492cdf3 FL |
870 | spin_unlock_irqrestore( |
871 | &cm_node->retrans_list_lock, flags); | |
9d5ab133 FL |
872 | nes_retrans_expired(cm_node); |
873 | cm_node->state = NES_CM_STATE_CLOSED; | |
6492cdf3 | 874 | spin_lock_irqsave(&cm_node->retrans_list_lock, |
615eb715 | 875 | flags); |
c5d321e5 | 876 | break; |
3c2d774c | 877 | } |
3c2d774c GS |
878 | atomic_inc(&send_entry->skb->users); |
879 | cm_packets_retrans++; | |
6492cdf3 | 880 | nes_debug(NES_DBG_CM, "Retransmitting send_entry %p " |
615eb715 TN |
881 | "for node %p, jiffies = %lu, time to send = " |
882 | "%lu, retranscount = %u, send_entry->seq_num = " | |
883 | "0x%08X, cm_node->tcp_cntxt.rem_ack_num = " | |
884 | "0x%08X\n", send_entry, cm_node, jiffies, | |
885 | send_entry->timetosend, | |
886 | send_entry->retranscount, | |
887 | send_entry->seq_num, | |
888 | cm_node->tcp_cntxt.rem_ack_num); | |
6492cdf3 FL |
889 | |
890 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, | |
615eb715 | 891 | flags); |
3c2d774c | 892 | ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev); |
6492cdf3 | 893 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
3c2d774c | 894 | if (ret != NETDEV_TX_OK) { |
6492cdf3 | 895 | nes_debug(NES_DBG_CM, "rexmit failed for " |
615eb715 | 896 | "node=%p\n", cm_node); |
3c2d774c | 897 | cm_packets_bounced++; |
3c2d774c GS |
898 | send_entry->retrycount--; |
899 | nexttimeout = jiffies + NES_SHORT_TIME; | |
900 | settimer = 1; | |
c5d321e5 | 901 | break; |
3c2d774c GS |
902 | } else { |
903 | cm_packets_sent++; | |
904 | } | |
6492cdf3 | 905 | nes_debug(NES_DBG_CM, "Packet Sent: retrans count = " |
615eb715 TN |
906 | "%u, retry count = %u.\n", |
907 | send_entry->retranscount, | |
908 | send_entry->retrycount); | |
3c2d774c GS |
909 | if (send_entry->send_retrans) { |
910 | send_entry->retranscount--; | |
4e9c3900 | 911 | timetosend = (NES_RETRY_TIMEOUT << |
615eb715 | 912 | (NES_DEFAULT_RETRANS - send_entry->retranscount)); |
4e9c3900 | 913 | |
6492cdf3 | 914 | send_entry->timetosend = jiffies + |
615eb715 | 915 | min(timetosend, NES_MAX_TIMEOUT); |
6492cdf3 | 916 | if (nexttimeout > send_entry->timetosend || |
615eb715 | 917 | !settimer) { |
3c2d774c GS |
918 | nexttimeout = send_entry->timetosend; |
919 | settimer = 1; | |
920 | } | |
3c2d774c GS |
921 | } else { |
922 | int close_when_complete; | |
6492cdf3 FL |
923 | close_when_complete = |
924 | send_entry->close_when_complete; | |
925 | nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n", | |
615eb715 | 926 | cm_node, cm_node->state); |
6492cdf3 FL |
927 | free_retrans_entry(cm_node); |
928 | if (close_when_complete) | |
929 | rem_ref_cm_node(cm_node->cm_core, | |
615eb715 | 930 | cm_node); |
3c2d774c | 931 | } |
6492cdf3 | 932 | } while (0); |
3c2d774c | 933 | |
6492cdf3 FL |
934 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
935 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 936 | } |
3c2d774c GS |
937 | |
938 | if (settimer) { | |
939 | if (!timer_pending(&cm_core->tcp_timer)) { | |
615eb715 | 940 | cm_core->tcp_timer.expires = nexttimeout; |
3c2d774c GS |
941 | add_timer(&cm_core->tcp_timer); |
942 | } | |
943 | } | |
944 | } | |
945 | ||
946 | ||
947 | /** | |
948 | * send_syn | |
949 | */ | |
6492cdf3 | 950 | static int send_syn(struct nes_cm_node *cm_node, u32 sendack, |
615eb715 | 951 | struct sk_buff *skb) |
3c2d774c GS |
952 | { |
953 | int ret; | |
954 | int flags = SET_SYN; | |
3c2d774c | 955 | char optionsbuffer[sizeof(struct option_mss) + |
615eb715 TN |
956 | sizeof(struct option_windowscale) + sizeof(struct option_base) + |
957 | TCP_OPTIONS_PADDING]; | |
3c2d774c GS |
958 | |
959 | int optionssize = 0; | |
960 | /* Sending MSS option */ | |
961 | union all_known_options *options; | |
962 | ||
963 | if (!cm_node) | |
964 | return -EINVAL; | |
965 | ||
966 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
967 | options->as_mss.optionnum = OPTION_NUMBER_MSS; | |
968 | options->as_mss.length = sizeof(struct option_mss); | |
969 | options->as_mss.mss = htons(cm_node->tcp_cntxt.mss); | |
970 | optionssize += sizeof(struct option_mss); | |
971 | ||
972 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
973 | options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE; | |
974 | options->as_windowscale.length = sizeof(struct option_windowscale); | |
975 | options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale; | |
976 | optionssize += sizeof(struct option_windowscale); | |
977 | ||
6492cdf3 | 978 | if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)) { |
3c2d774c GS |
979 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
980 | options->as_base.optionnum = OPTION_NUMBER_WRITE0; | |
981 | options->as_base.length = sizeof(struct option_base); | |
982 | optionssize += sizeof(struct option_base); | |
983 | /* we need the size to be a multiple of 4 */ | |
984 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
985 | options->as_end = 1; | |
986 | optionssize += 1; | |
987 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
988 | options->as_end = 1; | |
989 | optionssize += 1; | |
990 | } | |
991 | ||
992 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
993 | options->as_end = OPTION_NUMBER_END; | |
994 | optionssize += 1; | |
995 | ||
6492cdf3 | 996 | if (!skb) |
e189062a | 997 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
998 | if (!skb) { |
999 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1000 | return -1; | |
1001 | } | |
1002 | ||
1003 | if (sendack) | |
1004 | flags |= SET_ACK; | |
1005 | ||
1006 | form_cm_frame(skb, cm_node, optionsbuffer, optionssize, NULL, 0, flags); | |
1007 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1008 | ||
1009 | return ret; | |
1010 | } | |
1011 | ||
1012 | ||
1013 | /** | |
1014 | * send_reset | |
1015 | */ | |
6492cdf3 | 1016 | static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1017 | { |
1018 | int ret; | |
3c2d774c GS |
1019 | int flags = SET_RST | SET_ACK; |
1020 | ||
6492cdf3 | 1021 | if (!skb) |
e189062a | 1022 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1023 | if (!skb) { |
1024 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
9d5ab133 | 1025 | return -ENOMEM; |
3c2d774c GS |
1026 | } |
1027 | ||
3c2d774c GS |
1028 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags); |
1029 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1); | |
1030 | ||
1031 | return ret; | |
1032 | } | |
1033 | ||
1034 | ||
1035 | /** | |
1036 | * send_ack | |
1037 | */ | |
6492cdf3 | 1038 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1039 | { |
1040 | int ret; | |
6492cdf3 FL |
1041 | |
1042 | if (!skb) | |
e189062a | 1043 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1044 | |
1045 | if (!skb) { | |
1046 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1047 | return -1; | |
1048 | } | |
1049 | ||
1050 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK); | |
1051 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 0); | |
1052 | ||
1053 | return ret; | |
1054 | } | |
1055 | ||
1056 | ||
1057 | /** | |
1058 | * send_fin | |
1059 | */ | |
1a855fbf | 1060 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1061 | { |
1062 | int ret; | |
1063 | ||
1064 | /* if we didn't get a frame get one */ | |
1065 | if (!skb) | |
e189062a | 1066 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1067 | |
1068 | if (!skb) { | |
1069 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1070 | return -1; | |
1071 | } | |
1072 | ||
1073 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK | SET_FIN); | |
1074 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1075 | ||
1076 | return ret; | |
1077 | } | |
1078 | ||
1079 | ||
3c2d774c GS |
1080 | /** |
1081 | * find_node - find a cm node that matches the reference cm node | |
1082 | */ | |
1083 | static struct nes_cm_node *find_node(struct nes_cm_core *cm_core, | |
615eb715 | 1084 | u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr) |
3c2d774c GS |
1085 | { |
1086 | unsigned long flags; | |
3c2d774c GS |
1087 | struct list_head *hte; |
1088 | struct nes_cm_node *cm_node; | |
1089 | ||
3c2d774c GS |
1090 | /* get a handle on the hte */ |
1091 | hte = &cm_core->connected_nodes; | |
1092 | ||
3c2d774c GS |
1093 | /* walk list and find cm_node associated with this session ID */ |
1094 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
4e96a774 | 1095 | list_for_each_entry(cm_node, hte, list) { |
3c2d774c GS |
1096 | /* compare quad, return node handle if a match */ |
1097 | nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n", | |
615eb715 TN |
1098 | cm_node->loc_addr, cm_node->loc_port, |
1099 | loc_addr, loc_port, | |
1100 | cm_node->rem_addr, cm_node->rem_port, | |
1101 | rem_addr, rem_port); | |
3c2d774c | 1102 | if ((cm_node->loc_addr == loc_addr) && (cm_node->loc_port == loc_port) && |
615eb715 | 1103 | (cm_node->rem_addr == rem_addr) && (cm_node->rem_port == rem_port)) { |
3c2d774c GS |
1104 | add_ref_cm_node(cm_node); |
1105 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1106 | return cm_node; | |
1107 | } | |
1108 | } | |
1109 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1110 | ||
1111 | /* no owner node */ | |
1112 | return NULL; | |
1113 | } | |
1114 | ||
1115 | ||
1116 | /** | |
1117 | * find_listener - find a cm node listening on this addr-port pair | |
1118 | */ | |
1119 | static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core, | |
615eb715 | 1120 | nes_addr_t dst_addr, u16 dst_port, enum nes_cm_listener_state listener_state) |
3c2d774c GS |
1121 | { |
1122 | unsigned long flags; | |
3c2d774c GS |
1123 | struct nes_cm_listener *listen_node; |
1124 | ||
1125 | /* walk list and find cm_node associated with this session ID */ | |
1126 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
4e96a774 | 1127 | list_for_each_entry(listen_node, &cm_core->listen_list.list, list) { |
3c2d774c GS |
1128 | /* compare node pair, return node handle if a match */ |
1129 | if (((listen_node->loc_addr == dst_addr) || | |
615eb715 TN |
1130 | listen_node->loc_addr == 0x00000000) && |
1131 | (listen_node->loc_port == dst_port) && | |
1132 | (listener_state & listen_node->listener_state)) { | |
3c2d774c GS |
1133 | atomic_inc(&listen_node->ref_count); |
1134 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1135 | return listen_node; | |
1136 | } | |
1137 | } | |
1138 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1139 | ||
3c2d774c GS |
1140 | /* no listener */ |
1141 | return NULL; | |
1142 | } | |
1143 | ||
1144 | ||
1145 | /** | |
1146 | * add_hte_node - add a cm node to the hash table | |
1147 | */ | |
1148 | static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) | |
1149 | { | |
1150 | unsigned long flags; | |
3c2d774c GS |
1151 | struct list_head *hte; |
1152 | ||
1153 | if (!cm_node || !cm_core) | |
1154 | return -EINVAL; | |
1155 | ||
6492cdf3 | 1156 | nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n", |
615eb715 | 1157 | cm_node); |
3c2d774c | 1158 | |
3c2d774c GS |
1159 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
1160 | ||
1161 | /* get a handle on the hash table element (list head for this slot) */ | |
1162 | hte = &cm_core->connected_nodes; | |
1163 | list_add_tail(&cm_node->list, hte); | |
1164 | atomic_inc(&cm_core->ht_node_cnt); | |
1165 | ||
1166 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1167 | ||
1168 | return 0; | |
1169 | } | |
1170 | ||
1171 | ||
1172 | /** | |
1173 | * mini_cm_dec_refcnt_listen | |
1174 | */ | |
1175 | static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1176 | struct nes_cm_listener *listener, int free_hanging_nodes) |
3c2d774c | 1177 | { |
9d5ab133 FL |
1178 | int ret = -EINVAL; |
1179 | int err = 0; | |
3c2d774c | 1180 | unsigned long flags; |
6492cdf3 FL |
1181 | struct list_head *list_pos = NULL; |
1182 | struct list_head *list_temp = NULL; | |
1183 | struct nes_cm_node *cm_node = NULL; | |
879e5bd5 | 1184 | struct list_head reset_list; |
6492cdf3 FL |
1185 | |
1186 | nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, " | |
615eb715 TN |
1187 | "refcnt=%d\n", listener, free_hanging_nodes, |
1188 | atomic_read(&listener->ref_count)); | |
6492cdf3 | 1189 | /* free non-accelerated child nodes for this listener */ |
879e5bd5 | 1190 | INIT_LIST_HEAD(&reset_list); |
6492cdf3 FL |
1191 | if (free_hanging_nodes) { |
1192 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
1193 | list_for_each_safe(list_pos, list_temp, | |
879e5bd5 | 1194 | &g_cm_core->connected_nodes) { |
6492cdf3 | 1195 | cm_node = container_of(list_pos, struct nes_cm_node, |
615eb715 | 1196 | list); |
6492cdf3 | 1197 | if ((cm_node->listener == listener) && |
879e5bd5 FL |
1198 | (!cm_node->accelerated)) { |
1199 | add_ref_cm_node(cm_node); | |
1200 | list_add(&cm_node->reset_entry, &reset_list); | |
6492cdf3 FL |
1201 | } |
1202 | } | |
1203 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1204 | } | |
879e5bd5 FL |
1205 | |
1206 | list_for_each_safe(list_pos, list_temp, &reset_list) { | |
1207 | cm_node = container_of(list_pos, struct nes_cm_node, | |
615eb715 | 1208 | reset_entry); |
9d5ab133 FL |
1209 | { |
1210 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
c5a7d489 | 1211 | enum nes_cm_node_state old_state; |
9d5ab133 FL |
1212 | if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) { |
1213 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1214 | } else { | |
1215 | if (!loopback) { | |
1216 | cleanup_retrans_entry(cm_node); | |
1217 | err = send_reset(cm_node, NULL); | |
1218 | if (err) { | |
1219 | cm_node->state = | |
615eb715 | 1220 | NES_CM_STATE_CLOSED; |
9d5ab133 FL |
1221 | WARN_ON(1); |
1222 | } else { | |
c5a7d489 FL |
1223 | old_state = cm_node->state; |
1224 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; | |
1225 | if (old_state != NES_CM_STATE_MPAREQ_RCVD) | |
1226 | rem_ref_cm_node( | |
1227 | cm_node->cm_core, | |
1228 | cm_node); | |
9d5ab133 FL |
1229 | } |
1230 | } else { | |
1231 | struct nes_cm_event event; | |
1232 | ||
1233 | event.cm_node = loopback; | |
1234 | event.cm_info.rem_addr = | |
1235 | loopback->rem_addr; | |
1236 | event.cm_info.loc_addr = | |
1237 | loopback->loc_addr; | |
1238 | event.cm_info.rem_port = | |
1239 | loopback->rem_port; | |
1240 | event.cm_info.loc_port = | |
1241 | loopback->loc_port; | |
1242 | event.cm_info.cm_id = loopback->cm_id; | |
43093b94 FL |
1243 | add_ref_cm_node(loopback); |
1244 | loopback->state = NES_CM_STATE_CLOSED; | |
9d5ab133 | 1245 | cm_event_connect_error(&event); |
c5a7d489 | 1246 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; |
9d5ab133 | 1247 | |
9d5ab133 FL |
1248 | rem_ref_cm_node(cm_node->cm_core, |
1249 | cm_node); | |
1250 | ||
1251 | } | |
1252 | } | |
1253 | } | |
879e5bd5 FL |
1254 | } |
1255 | ||
3c2d774c GS |
1256 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
1257 | if (!atomic_dec_return(&listener->ref_count)) { | |
1258 | list_del(&listener->list); | |
1259 | ||
1260 | /* decrement our listen node count */ | |
1261 | atomic_dec(&cm_core->listen_node_cnt); | |
1262 | ||
1263 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1264 | ||
615eb715 | 1265 | if (listener->nesvnic) |
3c2d774c | 1266 | nes_manage_apbvt(listener->nesvnic, listener->loc_port, |
615eb715 | 1267 | PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn), NES_MANAGE_APBVT_DEL); |
3c2d774c GS |
1268 | |
1269 | nes_debug(NES_DBG_CM, "destroying listener (%p)\n", listener); | |
1270 | ||
1271 | kfree(listener); | |
a2e9c384 | 1272 | listener = NULL; |
3c2d774c | 1273 | ret = 0; |
6e10d2e4 | 1274 | atomic_inc(&cm_listens_destroyed); |
3c2d774c GS |
1275 | } else { |
1276 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1277 | } | |
1278 | if (listener) { | |
1279 | if (atomic_read(&listener->pend_accepts_cnt) > 0) | |
1280 | nes_debug(NES_DBG_CM, "destroying listener (%p)" | |
615eb715 TN |
1281 | " with non-zero pending accepts=%u\n", |
1282 | listener, atomic_read(&listener->pend_accepts_cnt)); | |
3c2d774c GS |
1283 | } |
1284 | ||
1285 | return ret; | |
1286 | } | |
1287 | ||
1288 | ||
1289 | /** | |
1290 | * mini_cm_del_listen | |
1291 | */ | |
1292 | static int mini_cm_del_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1293 | struct nes_cm_listener *listener) |
3c2d774c GS |
1294 | { |
1295 | listener->listener_state = NES_CM_LISTENER_PASSIVE_STATE; | |
1296 | listener->cm_id = NULL; /* going to be destroyed pretty soon */ | |
1297 | return mini_cm_dec_refcnt_listen(cm_core, listener, 1); | |
1298 | } | |
1299 | ||
1300 | ||
1301 | /** | |
1302 | * mini_cm_accelerated | |
1303 | */ | |
1304 | static inline int mini_cm_accelerated(struct nes_cm_core *cm_core, | |
615eb715 | 1305 | struct nes_cm_node *cm_node) |
3c2d774c GS |
1306 | { |
1307 | u32 was_timer_set; | |
615eb715 | 1308 | |
3c2d774c GS |
1309 | cm_node->accelerated = 1; |
1310 | ||
1311 | if (cm_node->accept_pend) { | |
1312 | BUG_ON(!cm_node->listener); | |
1313 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
9d5ab133 | 1314 | cm_node->accept_pend = 0; |
3c2d774c GS |
1315 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); |
1316 | } | |
1317 | ||
1318 | was_timer_set = timer_pending(&cm_core->tcp_timer); | |
1319 | if (!was_timer_set) { | |
1320 | cm_core->tcp_timer.expires = jiffies + NES_SHORT_TIME; | |
1321 | add_timer(&cm_core->tcp_timer); | |
1322 | } | |
1323 | ||
1324 | return 0; | |
1325 | } | |
1326 | ||
1327 | ||
1328 | /** | |
7191a0a1 | 1329 | * nes_addr_resolve_neigh |
3c2d774c | 1330 | */ |
7a576dfd | 1331 | static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpindex) |
3c2d774c GS |
1332 | { |
1333 | struct rtable *rt; | |
7191a0a1 | 1334 | struct neighbour *neigh; |
7a576dfd | 1335 | int rc = arpindex; |
2a4c97ea | 1336 | struct net_device *netdev; |
7a576dfd | 1337 | struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter; |
3c2d774c | 1338 | |
78fbfd8a | 1339 | rt = ip_route_output(&init_net, htonl(dst_ip), 0, 0, 0); |
b23dd4fe | 1340 | if (IS_ERR(rt)) { |
9d5ab133 | 1341 | printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n", |
615eb715 | 1342 | __func__, dst_ip); |
7191a0a1 | 1343 | return rc; |
3c2d774c GS |
1344 | } |
1345 | ||
cf55bb24 | 1346 | if (netif_is_bond_slave(nesvnic->netdev)) |
2a4c97ea MS |
1347 | netdev = nesvnic->netdev->master; |
1348 | else | |
1349 | netdev = nesvnic->netdev; | |
1350 | ||
1351 | neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev); | |
7191a0a1 BS |
1352 | if (neigh) { |
1353 | if (neigh->nud_state & NUD_VALID) { | |
1354 | nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X" | |
e174961c JB |
1355 | " is %pM, Gateway is 0x%08X \n", dst_ip, |
1356 | neigh->ha, ntohl(rt->rt_gateway)); | |
7a576dfd FL |
1357 | |
1358 | if (arpindex >= 0) { | |
1359 | if (!memcmp(nesadapter->arp_table[arpindex].mac_addr, | |
615eb715 | 1360 | neigh->ha, ETH_ALEN)) { |
7a576dfd FL |
1361 | /* Mac address same as in nes_arp_table */ |
1362 | neigh_release(neigh); | |
1363 | ip_rt_put(rt); | |
1364 | return rc; | |
1365 | } | |
1366 | ||
1367 | nes_manage_arp_cache(nesvnic->netdev, | |
615eb715 TN |
1368 | nesadapter->arp_table[arpindex].mac_addr, |
1369 | dst_ip, NES_ARP_DELETE); | |
7a576dfd FL |
1370 | } |
1371 | ||
7191a0a1 BS |
1372 | nes_manage_arp_cache(nesvnic->netdev, neigh->ha, |
1373 | dst_ip, NES_ARP_ADD); | |
1374 | rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL, | |
1375 | NES_ARP_RESOLVE); | |
1376 | } | |
1377 | neigh_release(neigh); | |
1378 | } | |
1379 | ||
580da35a ED |
1380 | if ((neigh == NULL) || (!(neigh->nud_state & NUD_VALID))) { |
1381 | rcu_read_lock(); | |
69cce1d1 | 1382 | neigh_event_send(dst_get_neighbour(&rt->dst), NULL); |
580da35a ED |
1383 | rcu_read_unlock(); |
1384 | } | |
3c2d774c | 1385 | ip_rt_put(rt); |
7191a0a1 | 1386 | return rc; |
3c2d774c GS |
1387 | } |
1388 | ||
3c2d774c GS |
1389 | /** |
1390 | * make_cm_node - create a new instance of a cm node | |
1391 | */ | |
1392 | static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, | |
615eb715 TN |
1393 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info, |
1394 | struct nes_cm_listener *listener) | |
3c2d774c GS |
1395 | { |
1396 | struct nes_cm_node *cm_node; | |
1397 | struct timespec ts; | |
7a576dfd | 1398 | int oldarpindex = 0; |
3c2d774c GS |
1399 | int arpindex = 0; |
1400 | struct nes_device *nesdev; | |
1401 | struct nes_adapter *nesadapter; | |
1402 | ||
1403 | /* create an hte and cm_node for this instance */ | |
1404 | cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC); | |
1405 | if (!cm_node) | |
1406 | return NULL; | |
1407 | ||
1408 | /* set our node specific transport info */ | |
1409 | cm_node->loc_addr = cm_info->loc_addr; | |
1410 | cm_node->rem_addr = cm_info->rem_addr; | |
1411 | cm_node->loc_port = cm_info->loc_port; | |
1412 | cm_node->rem_port = cm_info->rem_port; | |
615eb715 TN |
1413 | |
1414 | cm_node->mpa_frame_rev = mpa_version; | |
1415 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; | |
1416 | cm_node->ird_size = IETF_NO_IRD_ORD; | |
1417 | cm_node->ord_size = IETF_NO_IRD_ORD; | |
1418 | ||
63779436 HH |
1419 | nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n", |
1420 | &cm_node->loc_addr, cm_node->loc_port, | |
1421 | &cm_node->rem_addr, cm_node->rem_port); | |
3c2d774c GS |
1422 | cm_node->listener = listener; |
1423 | cm_node->netdev = nesvnic->netdev; | |
1424 | cm_node->cm_id = cm_info->cm_id; | |
1425 | memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN); | |
1426 | ||
6492cdf3 | 1427 | nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener, |
615eb715 | 1428 | cm_node->cm_id); |
3c2d774c | 1429 | |
3c2d774c | 1430 | spin_lock_init(&cm_node->retrans_list_lock); |
3c2d774c GS |
1431 | |
1432 | cm_node->loopbackpartner = NULL; | |
1433 | atomic_set(&cm_node->ref_count, 1); | |
1434 | /* associate our parent CM core */ | |
1435 | cm_node->cm_core = cm_core; | |
1436 | cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID; | |
1437 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
1438 | cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >> | |
615eb715 | 1439 | NES_CM_DEFAULT_RCV_WND_SCALE; |
3c2d774c GS |
1440 | ts = current_kernel_time(); |
1441 | cm_node->tcp_cntxt.loc_seq_num = htonl(ts.tv_nsec); | |
1442 | cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) - | |
615eb715 | 1443 | sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN; |
3c2d774c GS |
1444 | cm_node->tcp_cntxt.rcv_nxt = 0; |
1445 | /* get a unique session ID , add thread_id to an upcounter to handle race */ | |
1446 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c GS |
1447 | cm_node->conn_type = cm_info->conn_type; |
1448 | cm_node->apbvt_set = 0; | |
1449 | cm_node->accept_pend = 0; | |
1450 | ||
1451 | cm_node->nesvnic = nesvnic; | |
1452 | /* get some device handles, for arp lookup */ | |
1453 | nesdev = nesvnic->nesdev; | |
1454 | nesadapter = nesdev->nesadapter; | |
1455 | ||
1456 | cm_node->loopbackpartner = NULL; | |
7a576dfd | 1457 | |
3c2d774c | 1458 | /* get the mac addr for the remote node */ |
615eb715 | 1459 | if (ipv4_is_loopback(htonl(cm_node->rem_addr))) { |
1ee86555 | 1460 | arpindex = nes_arp_table(nesdev, ntohl(nesvnic->local_ipaddr), NULL, NES_ARP_RESOLVE); |
615eb715 | 1461 | } else { |
7a576dfd FL |
1462 | oldarpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE); |
1463 | arpindex = nes_addr_resolve_neigh(nesvnic, cm_info->rem_addr, oldarpindex); | |
7a576dfd | 1464 | } |
3c2d774c | 1465 | if (arpindex < 0) { |
7a576dfd FL |
1466 | kfree(cm_node); |
1467 | return NULL; | |
3c2d774c GS |
1468 | } |
1469 | ||
1470 | /* copy the mac addr to node context */ | |
1471 | memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN); | |
e174961c JB |
1472 | nes_debug(NES_DBG_CM, "Remote mac addr from arp table: %pM\n", |
1473 | cm_node->rem_mac); | |
3c2d774c GS |
1474 | |
1475 | add_hte_node(cm_core, cm_node); | |
1476 | atomic_inc(&cm_nodes_created); | |
1477 | ||
1478 | return cm_node; | |
1479 | } | |
1480 | ||
1481 | ||
1482 | /** | |
1483 | * add_ref_cm_node - destroy an instance of a cm node | |
1484 | */ | |
1485 | static int add_ref_cm_node(struct nes_cm_node *cm_node) | |
1486 | { | |
1487 | atomic_inc(&cm_node->ref_count); | |
1488 | return 0; | |
1489 | } | |
1490 | ||
1491 | ||
1492 | /** | |
1493 | * rem_ref_cm_node - destroy an instance of a cm node | |
1494 | */ | |
1495 | static int rem_ref_cm_node(struct nes_cm_core *cm_core, | |
615eb715 | 1496 | struct nes_cm_node *cm_node) |
3c2d774c | 1497 | { |
9d5ab133 | 1498 | unsigned long flags; |
3c2d774c GS |
1499 | struct nes_qp *nesqp; |
1500 | ||
1501 | if (!cm_node) | |
1502 | return -EINVAL; | |
1503 | ||
1504 | spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags); | |
1505 | if (atomic_dec_return(&cm_node->ref_count)) { | |
1506 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1507 | return 0; | |
1508 | } | |
1509 | list_del(&cm_node->list); | |
1510 | atomic_dec(&cm_core->ht_node_cnt); | |
1511 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1512 | ||
1513 | /* if the node is destroyed before connection was accelerated */ | |
1514 | if (!cm_node->accelerated && cm_node->accept_pend) { | |
1515 | BUG_ON(!cm_node->listener); | |
1516 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
1517 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); | |
1518 | } | |
9d5ab133 FL |
1519 | WARN_ON(cm_node->send_entry); |
1520 | if (cm_node->recv_entry) | |
1521 | handle_recv_entry(cm_node, 0); | |
3c2d774c GS |
1522 | if (cm_node->listener) { |
1523 | mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0); | |
1524 | } else { | |
1525 | if (cm_node->apbvt_set && cm_node->nesvnic) { | |
1526 | nes_manage_apbvt(cm_node->nesvnic, cm_node->loc_port, | |
615eb715 TN |
1527 | PCI_FUNC( |
1528 | cm_node->nesvnic->nesdev->pcidev->devfn), | |
1529 | NES_MANAGE_APBVT_DEL); | |
3c2d774c GS |
1530 | } |
1531 | } | |
1532 | ||
3c2d774c GS |
1533 | atomic_dec(&cm_core->node_cnt); |
1534 | atomic_inc(&cm_nodes_destroyed); | |
6492cdf3 FL |
1535 | nesqp = cm_node->nesqp; |
1536 | if (nesqp) { | |
1537 | nesqp->cm_node = NULL; | |
1538 | nes_rem_ref(&nesqp->ibqp); | |
1539 | cm_node->nesqp = NULL; | |
1540 | } | |
3c2d774c | 1541 | |
6492cdf3 | 1542 | kfree(cm_node); |
3c2d774c GS |
1543 | return 0; |
1544 | } | |
1545 | ||
3c2d774c GS |
1546 | /** |
1547 | * process_options | |
1548 | */ | |
6492cdf3 | 1549 | static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, |
615eb715 | 1550 | u32 optionsize, u32 syn_packet) |
3c2d774c GS |
1551 | { |
1552 | u32 tmp; | |
1553 | u32 offset = 0; | |
1554 | union all_known_options *all_options; | |
1555 | char got_mss_option = 0; | |
1556 | ||
1557 | while (offset < optionsize) { | |
1558 | all_options = (union all_known_options *)(optionsloc + offset); | |
1559 | switch (all_options->as_base.optionnum) { | |
6492cdf3 FL |
1560 | case OPTION_NUMBER_END: |
1561 | offset = optionsize; | |
1562 | break; | |
1563 | case OPTION_NUMBER_NONE: | |
1564 | offset += 1; | |
1565 | continue; | |
1566 | case OPTION_NUMBER_MSS: | |
1567 | nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d " | |
615eb715 TN |
1568 | "Size: %d\n", __func__, |
1569 | all_options->as_mss.length, offset, optionsize); | |
6492cdf3 FL |
1570 | got_mss_option = 1; |
1571 | if (all_options->as_mss.length != 4) { | |
1572 | return 1; | |
1573 | } else { | |
1574 | tmp = ntohs(all_options->as_mss.mss); | |
1575 | if (tmp > 0 && tmp < | |
615eb715 | 1576 | cm_node->tcp_cntxt.mss) |
6492cdf3 FL |
1577 | cm_node->tcp_cntxt.mss = tmp; |
1578 | } | |
1579 | break; | |
1580 | case OPTION_NUMBER_WINDOW_SCALE: | |
1581 | cm_node->tcp_cntxt.snd_wscale = | |
1582 | all_options->as_windowscale.shiftcount; | |
1583 | break; | |
6492cdf3 FL |
1584 | default: |
1585 | nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n", | |
615eb715 | 1586 | all_options->as_base.optionnum); |
6492cdf3 | 1587 | break; |
3c2d774c GS |
1588 | } |
1589 | offset += all_options->as_base.length; | |
1590 | } | |
1591 | if ((!got_mss_option) && (syn_packet)) | |
1592 | cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS; | |
1593 | return 0; | |
1594 | } | |
1595 | ||
6492cdf3 FL |
1596 | static void drop_packet(struct sk_buff *skb) |
1597 | { | |
1598 | atomic_inc(&cm_accel_dropped_pkts); | |
1599 | dev_kfree_skb_any(skb); | |
1600 | } | |
3c2d774c | 1601 | |
9d5ab133 | 1602 | static void handle_fin_pkt(struct nes_cm_node *cm_node) |
3c2d774c | 1603 | { |
6492cdf3 | 1604 | nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. " |
615eb715 TN |
1605 | "refcnt=%d\n", cm_node, cm_node->state, |
1606 | atomic_read(&cm_node->ref_count)); | |
6492cdf3 FL |
1607 | switch (cm_node->state) { |
1608 | case NES_CM_STATE_SYN_RCVD: | |
1609 | case NES_CM_STATE_SYN_SENT: | |
1610 | case NES_CM_STATE_ESTABLISHED: | |
9d5ab133 | 1611 | case NES_CM_STATE_MPAREJ_RCVD: |
109d67e4 FL |
1612 | cm_node->tcp_cntxt.rcv_nxt++; |
1613 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1614 | cm_node->state = NES_CM_STATE_LAST_ACK; |
9d5ab133 | 1615 | send_fin(cm_node, NULL); |
6492cdf3 | 1616 | break; |
b1190d3e FL |
1617 | case NES_CM_STATE_MPAREQ_SENT: |
1618 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
1619 | cm_node->tcp_cntxt.rcv_nxt++; | |
1620 | cleanup_retrans_entry(cm_node); | |
1621 | cm_node->state = NES_CM_STATE_CLOSED; | |
1622 | add_ref_cm_node(cm_node); | |
1623 | send_reset(cm_node, NULL); | |
1624 | break; | |
6492cdf3 | 1625 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1626 | cm_node->tcp_cntxt.rcv_nxt++; |
1627 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1628 | cm_node->state = NES_CM_STATE_CLOSING; |
9d5ab133 | 1629 | send_ack(cm_node, NULL); |
25985edc | 1630 | /* Wait for ACK as this is simultaneous close.. |
9d5ab133 FL |
1631 | * After we receive ACK, do not send anything.. |
1632 | * Just rm the node.. Done.. */ | |
6492cdf3 FL |
1633 | break; |
1634 | case NES_CM_STATE_FIN_WAIT2: | |
109d67e4 FL |
1635 | cm_node->tcp_cntxt.rcv_nxt++; |
1636 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1637 | cm_node->state = NES_CM_STATE_TIME_WAIT; |
9d5ab133 FL |
1638 | send_ack(cm_node, NULL); |
1639 | schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0); | |
1640 | break; | |
1641 | case NES_CM_STATE_TIME_WAIT: | |
109d67e4 FL |
1642 | cm_node->tcp_cntxt.rcv_nxt++; |
1643 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1644 | cm_node->state = NES_CM_STATE_CLOSED; |
9d5ab133 | 1645 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
6492cdf3 FL |
1646 | break; |
1647 | case NES_CM_STATE_TSA: | |
1648 | default: | |
1649 | nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n", | |
1650 | cm_node, cm_node->state); | |
6492cdf3 | 1651 | break; |
3c2d774c | 1652 | } |
6492cdf3 | 1653 | } |
3c2d774c | 1654 | |
3c2d774c | 1655 | |
6492cdf3 FL |
1656 | static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
1657 | struct tcphdr *tcph) | |
1658 | { | |
3c2d774c | 1659 | |
6492cdf3 FL |
1660 | int reset = 0; /* whether to send reset in case of err.. */ |
1661 | atomic_inc(&cm_resets_recvd); | |
1662 | nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." | |
1663 | " refcnt=%d\n", cm_node, cm_node->state, | |
1664 | atomic_read(&cm_node->ref_count)); | |
1665 | cleanup_retrans_entry(cm_node); | |
1666 | switch (cm_node->state) { | |
1667 | case NES_CM_STATE_SYN_SENT: | |
1668 | case NES_CM_STATE_MPAREQ_SENT: | |
1669 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
1670 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, | |
1671 | cm_node->listener, cm_node->state); | |
615eb715 TN |
1672 | switch (cm_node->mpa_frame_rev) { |
1673 | case IETF_MPA_V2: | |
1674 | cm_node->mpa_frame_rev = IETF_MPA_V1; | |
1675 | /* send a syn and goto syn sent state */ | |
1676 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
1677 | if (send_syn(cm_node, 0, NULL)) { | |
1678 | active_open_err(cm_node, skb, reset); | |
1679 | } | |
1680 | break; | |
1681 | case IETF_MPA_V1: | |
1682 | default: | |
1683 | active_open_err(cm_node, skb, reset); | |
1684 | break; | |
1685 | } | |
6492cdf3 | 1686 | break; |
183ecfa3 | 1687 | case NES_CM_STATE_MPAREQ_RCVD: |
4d8d6389 | 1688 | atomic_inc(&cm_node->passive_state); |
183ecfa3 FL |
1689 | dev_kfree_skb_any(skb); |
1690 | break; | |
6492cdf3 FL |
1691 | case NES_CM_STATE_ESTABLISHED: |
1692 | case NES_CM_STATE_SYN_RCVD: | |
1693 | case NES_CM_STATE_LISTENING: | |
1694 | nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__); | |
1695 | passive_open_err(cm_node, skb, reset); | |
1696 | break; | |
1697 | case NES_CM_STATE_TSA: | |
183ecfa3 FL |
1698 | active_open_err(cm_node, skb, reset); |
1699 | break; | |
1700 | case NES_CM_STATE_CLOSED: | |
183ecfa3 FL |
1701 | drop_packet(skb); |
1702 | break; | |
dae58728 | 1703 | case NES_CM_STATE_FIN_WAIT2: |
68237a0f | 1704 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1705 | case NES_CM_STATE_LAST_ACK: |
1706 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 | 1707 | case NES_CM_STATE_TIME_WAIT: |
9d5ab133 FL |
1708 | cm_node->state = NES_CM_STATE_CLOSED; |
1709 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1710 | drop_packet(skb); | |
1711 | break; | |
6492cdf3 | 1712 | default: |
183ecfa3 | 1713 | drop_packet(skb); |
6492cdf3 FL |
1714 | break; |
1715 | } | |
1716 | } | |
3c2d774c | 1717 | |
9d5ab133 FL |
1718 | |
1719 | static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
6492cdf3 | 1720 | { |
615eb715 | 1721 | int ret = 0; |
6492cdf3 FL |
1722 | int datasize = skb->len; |
1723 | u8 *dataloc = skb->data; | |
9d5ab133 FL |
1724 | |
1725 | enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN; | |
615eb715 TN |
1726 | u32 res_type; |
1727 | ||
9d5ab133 FL |
1728 | ret = parse_mpa(cm_node, dataloc, &res_type, datasize); |
1729 | if (ret) { | |
6492cdf3 | 1730 | nes_debug(NES_DBG_CM, "didn't like MPA Request\n"); |
9d5ab133 | 1731 | if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) { |
6492cdf3 | 1732 | nes_debug(NES_DBG_CM, "%s[%u] create abort for " |
615eb715 TN |
1733 | "cm_node=%p listener=%p state=%d\n", __func__, |
1734 | __LINE__, cm_node, cm_node->listener, | |
1735 | cm_node->state); | |
6492cdf3 FL |
1736 | active_open_err(cm_node, skb, 1); |
1737 | } else { | |
1738 | passive_open_err(cm_node, skb, 1); | |
3c2d774c | 1739 | } |
9d5ab133 FL |
1740 | return; |
1741 | } | |
1742 | ||
1743 | switch (cm_node->state) { | |
1744 | case NES_CM_STATE_ESTABLISHED: | |
615eb715 | 1745 | if (res_type == NES_MPA_REQUEST_REJECT) |
9d5ab133 | 1746 | /*BIG problem as we are receiving the MPA.. So should |
615eb715 TN |
1747 | * not be REJECT.. This is Passive Open.. We can |
1748 | * only receive it Reject for Active Open...*/ | |
9d5ab133 | 1749 | WARN_ON(1); |
9d5ab133 FL |
1750 | cm_node->state = NES_CM_STATE_MPAREQ_RCVD; |
1751 | type = NES_CM_EVENT_MPA_REQ; | |
1752 | atomic_set(&cm_node->passive_state, | |
615eb715 | 1753 | NES_PASSIVE_STATE_INDICATED); |
9d5ab133 FL |
1754 | break; |
1755 | case NES_CM_STATE_MPAREQ_SENT: | |
109d67e4 | 1756 | cleanup_retrans_entry(cm_node); |
9d5ab133 FL |
1757 | if (res_type == NES_MPA_REQUEST_REJECT) { |
1758 | type = NES_CM_EVENT_MPA_REJECT; | |
1759 | cm_node->state = NES_CM_STATE_MPAREJ_RCVD; | |
1760 | } else { | |
1761 | type = NES_CM_EVENT_CONNECTED; | |
6492cdf3 | 1762 | cm_node->state = NES_CM_STATE_TSA; |
9d5ab133 | 1763 | } |
6492cdf3 | 1764 | |
9d5ab133 FL |
1765 | break; |
1766 | default: | |
1767 | WARN_ON(1); | |
1768 | break; | |
6492cdf3 | 1769 | } |
9d5ab133 FL |
1770 | dev_kfree_skb_any(skb); |
1771 | create_event(cm_node, type); | |
6492cdf3 FL |
1772 | } |
1773 | ||
1774 | static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
1775 | { | |
1776 | switch (cm_node->state) { | |
1777 | case NES_CM_STATE_SYN_SENT: | |
1778 | case NES_CM_STATE_MPAREQ_SENT: | |
1779 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1780 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1781 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1782 | active_open_err(cm_node, skb, 1); |
1783 | break; | |
1784 | case NES_CM_STATE_ESTABLISHED: | |
1785 | case NES_CM_STATE_SYN_RCVD: | |
1786 | passive_open_err(cm_node, skb, 1); | |
1787 | break; | |
1788 | case NES_CM_STATE_TSA: | |
1789 | default: | |
1790 | drop_packet(skb); | |
3c2d774c | 1791 | } |
6492cdf3 FL |
1792 | } |
1793 | ||
1794 | static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1795 | struct sk_buff *skb) |
6492cdf3 FL |
1796 | { |
1797 | int err; | |
1798 | ||
615eb715 | 1799 | err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num)) ? 0 : 1; |
6492cdf3 FL |
1800 | if (err) |
1801 | active_open_err(cm_node, skb, 1); | |
1802 | ||
1803 | return err; | |
1804 | } | |
1805 | ||
1806 | static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1807 | struct sk_buff *skb) |
6492cdf3 FL |
1808 | { |
1809 | int err = 0; | |
1810 | u32 seq; | |
1811 | u32 ack_seq; | |
1812 | u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num; | |
1813 | u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; | |
1814 | u32 rcv_wnd; | |
615eb715 | 1815 | |
6492cdf3 FL |
1816 | seq = ntohl(tcph->seq); |
1817 | ack_seq = ntohl(tcph->ack_seq); | |
1818 | rcv_wnd = cm_node->tcp_cntxt.rcv_wnd; | |
1819 | if (ack_seq != loc_seq_num) | |
1820 | err = 1; | |
615eb715 | 1821 | else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd))) |
6492cdf3 FL |
1822 | err = 1; |
1823 | if (err) { | |
1824 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1825 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1826 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1827 | indicate_pkt_err(cm_node, skb); |
1828 | nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X " | |
615eb715 TN |
1829 | "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt, |
1830 | rcv_wnd); | |
6492cdf3 FL |
1831 | } |
1832 | return err; | |
1833 | } | |
1834 | ||
1835 | /* | |
1836 | * handle_syn_pkt() is for Passive node. The syn packet is received when a node | |
1837 | * is created with a listener or it may comein as rexmitted packet which in | |
1838 | * that case will be just dropped. | |
1839 | */ | |
6492cdf3 | 1840 | static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 1841 | struct tcphdr *tcph) |
6492cdf3 FL |
1842 | { |
1843 | int ret; | |
1844 | u32 inc_sequence; | |
1845 | int optionsize; | |
3c2d774c GS |
1846 | |
1847 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 1848 | skb_trim(skb, 0); |
6492cdf3 | 1849 | inc_sequence = ntohl(tcph->seq); |
3c2d774c | 1850 | |
6492cdf3 FL |
1851 | switch (cm_node->state) { |
1852 | case NES_CM_STATE_SYN_SENT: | |
1853 | case NES_CM_STATE_MPAREQ_SENT: | |
1854 | /* Rcvd syn on active open connection*/ | |
1855 | active_open_err(cm_node, skb, 1); | |
1856 | break; | |
1857 | case NES_CM_STATE_LISTENING: | |
1858 | /* Passive OPEN */ | |
6492cdf3 | 1859 | if (atomic_read(&cm_node->listener->pend_accepts_cnt) > |
615eb715 | 1860 | cm_node->listener->backlog) { |
6492cdf3 | 1861 | nes_debug(NES_DBG_CM, "drop syn due to backlog " |
615eb715 | 1862 | "pressure \n"); |
6492cdf3 FL |
1863 | cm_backlog_drops++; |
1864 | passive_open_err(cm_node, skb, 0); | |
1865 | break; | |
1866 | } | |
1867 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, | |
615eb715 | 1868 | 1); |
6492cdf3 FL |
1869 | if (ret) { |
1870 | passive_open_err(cm_node, skb, 0); | |
1871 | /* drop pkt */ | |
1872 | break; | |
1873 | } | |
1874 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
1875 | BUG_ON(cm_node->send_entry); | |
9d5ab133 FL |
1876 | cm_node->accept_pend = 1; |
1877 | atomic_inc(&cm_node->listener->pend_accepts_cnt); | |
1878 | ||
6492cdf3 FL |
1879 | cm_node->state = NES_CM_STATE_SYN_RCVD; |
1880 | send_syn(cm_node, 1, skb); | |
1881 | break; | |
abb77256 FL |
1882 | case NES_CM_STATE_CLOSED: |
1883 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 1884 | add_ref_cm_node(cm_node); |
abb77256 FL |
1885 | send_reset(cm_node, skb); |
1886 | break; | |
6492cdf3 FL |
1887 | case NES_CM_STATE_TSA: |
1888 | case NES_CM_STATE_ESTABLISHED: | |
1889 | case NES_CM_STATE_FIN_WAIT1: | |
1890 | case NES_CM_STATE_FIN_WAIT2: | |
1891 | case NES_CM_STATE_MPAREQ_RCVD: | |
1892 | case NES_CM_STATE_LAST_ACK: | |
1893 | case NES_CM_STATE_CLOSING: | |
1894 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
1895 | default: |
1896 | drop_packet(skb); | |
1897 | break; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 1902 | struct tcphdr *tcph) |
6492cdf3 | 1903 | { |
6492cdf3 FL |
1904 | int ret; |
1905 | u32 inc_sequence; | |
1906 | int optionsize; | |
1907 | ||
1908 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 1909 | skb_trim(skb, 0); |
6492cdf3 FL |
1910 | inc_sequence = ntohl(tcph->seq); |
1911 | switch (cm_node->state) { | |
1912 | case NES_CM_STATE_SYN_SENT: | |
9d5ab133 | 1913 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
1914 | /* active open */ |
1915 | if (check_syn(cm_node, tcph, skb)) | |
1916 | return; | |
1917 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
1918 | /* setup options */ | |
1919 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0); | |
1920 | if (ret) { | |
1921 | nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n", | |
615eb715 | 1922 | cm_node); |
6492cdf3 FL |
1923 | break; |
1924 | } | |
1925 | cleanup_retrans_entry(cm_node); | |
1926 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
1927 | send_mpa_request(cm_node, skb); | |
1928 | cm_node->state = NES_CM_STATE_MPAREQ_SENT; | |
1929 | break; | |
1930 | case NES_CM_STATE_MPAREQ_RCVD: | |
1931 | /* passive open, so should not be here */ | |
1932 | passive_open_err(cm_node, skb, 1); | |
1933 | break; | |
abb77256 | 1934 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
1935 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
1936 | cleanup_retrans_entry(cm_node); | |
1937 | cm_node->state = NES_CM_STATE_CLOSED; | |
1938 | send_reset(cm_node, skb); | |
1939 | break; | |
abb77256 FL |
1940 | case NES_CM_STATE_CLOSED: |
1941 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); | |
1942 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 1943 | add_ref_cm_node(cm_node); |
abb77256 FL |
1944 | send_reset(cm_node, skb); |
1945 | break; | |
6492cdf3 FL |
1946 | case NES_CM_STATE_ESTABLISHED: |
1947 | case NES_CM_STATE_FIN_WAIT1: | |
1948 | case NES_CM_STATE_FIN_WAIT2: | |
1949 | case NES_CM_STATE_LAST_ACK: | |
1950 | case NES_CM_STATE_TSA: | |
1951 | case NES_CM_STATE_CLOSING: | |
1952 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
1953 | case NES_CM_STATE_MPAREQ_SENT: |
1954 | default: | |
1955 | drop_packet(skb); | |
1956 | break; | |
1957 | } | |
1958 | } | |
3c2d774c | 1959 | |
109d67e4 | 1960 | static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 1961 | struct tcphdr *tcph) |
6492cdf3 FL |
1962 | { |
1963 | int datasize = 0; | |
1964 | u32 inc_sequence; | |
109d67e4 | 1965 | int ret = 0; |
abb77256 | 1966 | int optionsize; |
615eb715 | 1967 | |
abb77256 | 1968 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
abb77256 | 1969 | |
6492cdf3 | 1970 | if (check_seq(cm_node, tcph, skb)) |
109d67e4 | 1971 | return -EINVAL; |
6492cdf3 FL |
1972 | |
1973 | skb_pull(skb, tcph->doff << 2); | |
3c2d774c | 1974 | inc_sequence = ntohl(tcph->seq); |
6492cdf3 | 1975 | datasize = skb->len; |
6492cdf3 FL |
1976 | switch (cm_node->state) { |
1977 | case NES_CM_STATE_SYN_RCVD: | |
1978 | /* Passive OPEN */ | |
109d67e4 | 1979 | cleanup_retrans_entry(cm_node); |
abb77256 FL |
1980 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1); |
1981 | if (ret) | |
1982 | break; | |
6492cdf3 FL |
1983 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
1984 | cm_node->state = NES_CM_STATE_ESTABLISHED; | |
1985 | if (datasize) { | |
1986 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 1987 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 1988 | } else { /* rcvd ACK only */ |
6492cdf3 | 1989 | dev_kfree_skb_any(skb); |
615eb715 | 1990 | } |
6492cdf3 FL |
1991 | break; |
1992 | case NES_CM_STATE_ESTABLISHED: | |
1993 | /* Passive OPEN */ | |
9d5ab133 | 1994 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
1995 | if (datasize) { |
1996 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 1997 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 1998 | } else { |
6492cdf3 | 1999 | drop_packet(skb); |
615eb715 | 2000 | } |
6492cdf3 FL |
2001 | break; |
2002 | case NES_CM_STATE_MPAREQ_SENT: | |
2003 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
2004 | if (datasize) { | |
2005 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 2006 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2007 | } else { /* Could be just an ack pkt.. */ |
6492cdf3 | 2008 | dev_kfree_skb_any(skb); |
615eb715 | 2009 | } |
6492cdf3 | 2010 | break; |
abb77256 | 2011 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
2012 | cleanup_retrans_entry(cm_node); |
2013 | cm_node->state = NES_CM_STATE_CLOSED; | |
2014 | send_reset(cm_node, skb); | |
2015 | break; | |
abb77256 FL |
2016 | case NES_CM_STATE_CLOSED: |
2017 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2018 | add_ref_cm_node(cm_node); |
abb77256 FL |
2019 | send_reset(cm_node, skb); |
2020 | break; | |
9d5ab133 | 2021 | case NES_CM_STATE_LAST_ACK: |
109d67e4 | 2022 | case NES_CM_STATE_CLOSING: |
9d5ab133 FL |
2023 | cleanup_retrans_entry(cm_node); |
2024 | cm_node->state = NES_CM_STATE_CLOSED; | |
2025 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 FL |
2026 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2027 | drop_packet(skb); | |
2028 | break; | |
6492cdf3 | 2029 | case NES_CM_STATE_FIN_WAIT1: |
9d5ab133 FL |
2030 | cleanup_retrans_entry(cm_node); |
2031 | drop_packet(skb); | |
2032 | cm_node->state = NES_CM_STATE_FIN_WAIT2; | |
2033 | break; | |
6492cdf3 FL |
2034 | case NES_CM_STATE_SYN_SENT: |
2035 | case NES_CM_STATE_FIN_WAIT2: | |
2036 | case NES_CM_STATE_TSA: | |
6492cdf3 | 2037 | case NES_CM_STATE_MPAREQ_RCVD: |
6492cdf3 FL |
2038 | case NES_CM_STATE_UNKNOWN: |
2039 | default: | |
109d67e4 | 2040 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2041 | drop_packet(skb); |
2042 | break; | |
3c2d774c | 2043 | } |
109d67e4 | 2044 | return ret; |
6492cdf3 | 2045 | } |
3c2d774c | 2046 | |
3c2d774c GS |
2047 | |
2048 | ||
6492cdf3 | 2049 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, |
615eb715 | 2050 | struct sk_buff *skb, int optionsize, int passive) |
6492cdf3 FL |
2051 | { |
2052 | u8 *optionsloc = (u8 *)&tcph[1]; | |
615eb715 | 2053 | |
3c2d774c | 2054 | if (optionsize) { |
6492cdf3 | 2055 | if (process_options(cm_node, optionsloc, optionsize, |
615eb715 | 2056 | (u32)tcph->syn)) { |
6492cdf3 | 2057 | nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n", |
615eb715 | 2058 | __func__, cm_node); |
6492cdf3 | 2059 | if (passive) |
abb77256 | 2060 | passive_open_err(cm_node, skb, 1); |
6492cdf3 | 2061 | else |
abb77256 | 2062 | active_open_err(cm_node, skb, 1); |
6492cdf3 | 2063 | return 1; |
3c2d774c | 2064 | } |
6492cdf3 | 2065 | } |
3c2d774c GS |
2066 | |
2067 | cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) << | |
615eb715 | 2068 | cm_node->tcp_cntxt.snd_wscale; |
3c2d774c | 2069 | |
6492cdf3 | 2070 | if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd) |
3c2d774c | 2071 | cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd; |
6492cdf3 FL |
2072 | return 0; |
2073 | } | |
3c2d774c | 2074 | |
6492cdf3 FL |
2075 | /* |
2076 | * active_open_err() will send reset() if flag set.. | |
2077 | * It will also send ABORT event. | |
2078 | */ | |
6492cdf3 | 2079 | static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2080 | int reset) |
6492cdf3 FL |
2081 | { |
2082 | cleanup_retrans_entry(cm_node); | |
2083 | if (reset) { | |
2084 | nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, " | |
615eb715 | 2085 | "state=%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2086 | add_ref_cm_node(cm_node); |
2087 | send_reset(cm_node, skb); | |
615eb715 | 2088 | } else { |
6492cdf3 | 2089 | dev_kfree_skb_any(skb); |
615eb715 | 2090 | } |
3c2d774c | 2091 | |
6492cdf3 FL |
2092 | cm_node->state = NES_CM_STATE_CLOSED; |
2093 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2094 | } | |
3c2d774c | 2095 | |
6492cdf3 FL |
2096 | /* |
2097 | * passive_open_err() will either do a reset() or will free up the skb and | |
2098 | * remove the cm_node. | |
2099 | */ | |
6492cdf3 | 2100 | static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2101 | int reset) |
6492cdf3 FL |
2102 | { |
2103 | cleanup_retrans_entry(cm_node); | |
2104 | cm_node->state = NES_CM_STATE_CLOSED; | |
2105 | if (reset) { | |
2106 | nes_debug(NES_DBG_CM, "passive_open_err sending RST for " | |
615eb715 | 2107 | "cm_node=%p state =%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2108 | send_reset(cm_node, skb); |
2109 | } else { | |
2110 | dev_kfree_skb_any(skb); | |
2111 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2112 | } |
6492cdf3 | 2113 | } |
3c2d774c | 2114 | |
6492cdf3 FL |
2115 | /* |
2116 | * free_retrans_entry() routines assumes that the retrans_list_lock has | |
2117 | * been acquired before calling. | |
2118 | */ | |
2119 | static void free_retrans_entry(struct nes_cm_node *cm_node) | |
2120 | { | |
2121 | struct nes_timer_entry *send_entry; | |
615eb715 | 2122 | |
6492cdf3 FL |
2123 | send_entry = cm_node->send_entry; |
2124 | if (send_entry) { | |
2125 | cm_node->send_entry = NULL; | |
2126 | dev_kfree_skb_any(send_entry->skb); | |
2127 | kfree(send_entry); | |
2128 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2129 | } |
6492cdf3 | 2130 | } |
3c2d774c | 2131 | |
6492cdf3 FL |
2132 | static void cleanup_retrans_entry(struct nes_cm_node *cm_node) |
2133 | { | |
2134 | unsigned long flags; | |
3c2d774c | 2135 | |
6492cdf3 FL |
2136 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
2137 | free_retrans_entry(cm_node); | |
2138 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
3c2d774c GS |
2139 | } |
2140 | ||
6492cdf3 FL |
2141 | /** |
2142 | * process_packet | |
2143 | * Returns skb if to be freed, else it will return NULL if already used.. | |
2144 | */ | |
2145 | static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 2146 | struct nes_cm_core *cm_core) |
6492cdf3 | 2147 | { |
615eb715 | 2148 | enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN; |
6492cdf3 | 2149 | struct tcphdr *tcph = tcp_hdr(skb); |
615eb715 | 2150 | u32 fin_set = 0; |
109d67e4 | 2151 | int ret = 0; |
615eb715 | 2152 | |
6492cdf3 FL |
2153 | skb_pull(skb, ip_hdr(skb)->ihl << 2); |
2154 | ||
2155 | nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d " | |
615eb715 TN |
2156 | "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn, |
2157 | tcph->ack, tcph->rst, tcph->fin); | |
6492cdf3 | 2158 | |
615eb715 | 2159 | if (tcph->rst) { |
6492cdf3 | 2160 | pkt_type = NES_PKT_TYPE_RST; |
615eb715 | 2161 | } else if (tcph->syn) { |
6492cdf3 FL |
2162 | pkt_type = NES_PKT_TYPE_SYN; |
2163 | if (tcph->ack) | |
2164 | pkt_type = NES_PKT_TYPE_SYNACK; | |
615eb715 | 2165 | } else if (tcph->ack) { |
6492cdf3 | 2166 | pkt_type = NES_PKT_TYPE_ACK; |
615eb715 | 2167 | } |
9d5ab133 FL |
2168 | if (tcph->fin) |
2169 | fin_set = 1; | |
6492cdf3 FL |
2170 | |
2171 | switch (pkt_type) { | |
2172 | case NES_PKT_TYPE_SYN: | |
2173 | handle_syn_pkt(cm_node, skb, tcph); | |
2174 | break; | |
2175 | case NES_PKT_TYPE_SYNACK: | |
2176 | handle_synack_pkt(cm_node, skb, tcph); | |
2177 | break; | |
2178 | case NES_PKT_TYPE_ACK: | |
109d67e4 FL |
2179 | ret = handle_ack_pkt(cm_node, skb, tcph); |
2180 | if (fin_set && !ret) | |
9d5ab133 | 2181 | handle_fin_pkt(cm_node); |
6492cdf3 FL |
2182 | break; |
2183 | case NES_PKT_TYPE_RST: | |
2184 | handle_rst_pkt(cm_node, skb, tcph); | |
2185 | break; | |
6492cdf3 | 2186 | default: |
109d67e4 | 2187 | if ((fin_set) && (!check_seq(cm_node, tcph, skb))) |
9d5ab133 | 2188 | handle_fin_pkt(cm_node); |
109d67e4 | 2189 | drop_packet(skb); |
6492cdf3 FL |
2190 | break; |
2191 | } | |
2192 | } | |
3c2d774c GS |
2193 | |
2194 | /** | |
2195 | * mini_cm_listen - create a listen node with params | |
2196 | */ | |
2197 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, | |
615eb715 | 2198 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info) |
3c2d774c GS |
2199 | { |
2200 | struct nes_cm_listener *listener; | |
2201 | unsigned long flags; | |
2202 | ||
2203 | nes_debug(NES_DBG_CM, "Search for 0x%08x : 0x%04x\n", | |
615eb715 | 2204 | cm_info->loc_addr, cm_info->loc_port); |
3c2d774c GS |
2205 | |
2206 | /* cannot have multiple matching listeners */ | |
2207 | listener = find_listener(cm_core, htonl(cm_info->loc_addr), | |
615eb715 | 2208 | htons(cm_info->loc_port), NES_CM_LISTENER_EITHER_STATE); |
3c2d774c GS |
2209 | if (listener && listener->listener_state == NES_CM_LISTENER_ACTIVE_STATE) { |
2210 | /* find automatically incs ref count ??? */ | |
2211 | atomic_dec(&listener->ref_count); | |
2212 | nes_debug(NES_DBG_CM, "Not creating listener since it already exists\n"); | |
2213 | return NULL; | |
2214 | } | |
2215 | ||
2216 | if (!listener) { | |
2217 | /* create a CM listen node (1/2 node to compare incoming traffic to) */ | |
2218 | listener = kzalloc(sizeof(*listener), GFP_ATOMIC); | |
2219 | if (!listener) { | |
2220 | nes_debug(NES_DBG_CM, "Not creating listener memory allocation failed\n"); | |
2221 | return NULL; | |
2222 | } | |
2223 | ||
3c2d774c GS |
2224 | listener->loc_addr = htonl(cm_info->loc_addr); |
2225 | listener->loc_port = htons(cm_info->loc_port); | |
2226 | listener->reused_node = 0; | |
2227 | ||
2228 | atomic_set(&listener->ref_count, 1); | |
2229 | } | |
2230 | /* pasive case */ | |
2231 | /* find already inc'ed the ref count */ | |
2232 | else { | |
2233 | listener->reused_node = 1; | |
2234 | } | |
2235 | ||
2236 | listener->cm_id = cm_info->cm_id; | |
2237 | atomic_set(&listener->pend_accepts_cnt, 0); | |
2238 | listener->cm_core = cm_core; | |
2239 | listener->nesvnic = nesvnic; | |
2240 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c | 2241 | |
3c2d774c GS |
2242 | listener->conn_type = cm_info->conn_type; |
2243 | listener->backlog = cm_info->backlog; | |
2244 | listener->listener_state = NES_CM_LISTENER_ACTIVE_STATE; | |
2245 | ||
2246 | if (!listener->reused_node) { | |
2247 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
2248 | list_add(&listener->list, &cm_core->listen_list.list); | |
2249 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
2250 | atomic_inc(&cm_core->listen_node_cnt); | |
2251 | } | |
2252 | ||
2253 | nes_debug(NES_DBG_CM, "Api - listen(): addr=0x%08X, port=0x%04x," | |
615eb715 TN |
2254 | " listener = %p, backlog = %d, cm_id = %p.\n", |
2255 | cm_info->loc_addr, cm_info->loc_port, | |
2256 | listener, listener->backlog, listener->cm_id); | |
3c2d774c GS |
2257 | |
2258 | return listener; | |
2259 | } | |
2260 | ||
2261 | ||
2262 | /** | |
2263 | * mini_cm_connect - make a connection node with params | |
2264 | */ | |
54c86a8c | 2265 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, |
615eb715 TN |
2266 | struct nes_vnic *nesvnic, u16 private_data_len, |
2267 | void *private_data, struct nes_cm_info *cm_info) | |
3c2d774c GS |
2268 | { |
2269 | int ret = 0; | |
2270 | struct nes_cm_node *cm_node; | |
2271 | struct nes_cm_listener *loopbackremotelistener; | |
2272 | struct nes_cm_node *loopbackremotenode; | |
2273 | struct nes_cm_info loopback_cm_info; | |
615eb715 | 2274 | u8 *start_buff; |
3c2d774c GS |
2275 | |
2276 | /* create a CM connection node */ | |
2277 | cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL); | |
2278 | if (!cm_node) | |
2279 | return NULL; | |
2280 | ||
7495ab68 | 2281 | /* set our node side to client (active) side */ |
3c2d774c GS |
2282 | cm_node->tcp_cntxt.client = 1; |
2283 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
2284 | ||
2285 | if (cm_info->loc_addr == cm_info->rem_addr) { | |
6492cdf3 | 2286 | loopbackremotelistener = find_listener(cm_core, |
615eb715 TN |
2287 | ntohl(nesvnic->local_ipaddr), cm_node->rem_port, |
2288 | NES_CM_LISTENER_ACTIVE_STATE); | |
3c2d774c GS |
2289 | if (loopbackremotelistener == NULL) { |
2290 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2291 | } else { | |
3c2d774c GS |
2292 | loopback_cm_info = *cm_info; |
2293 | loopback_cm_info.loc_port = cm_info->rem_port; | |
2294 | loopback_cm_info.rem_port = cm_info->loc_port; | |
2295 | loopback_cm_info.cm_id = loopbackremotelistener->cm_id; | |
6492cdf3 | 2296 | loopbackremotenode = make_cm_node(cm_core, nesvnic, |
615eb715 | 2297 | &loopback_cm_info, loopbackremotelistener); |
79fc3d74 FL |
2298 | if (!loopbackremotenode) { |
2299 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
2300 | return NULL; | |
2301 | } | |
2302 | atomic_inc(&cm_loopbacks); | |
3c2d774c | 2303 | loopbackremotenode->loopbackpartner = cm_node; |
6492cdf3 FL |
2304 | loopbackremotenode->tcp_cntxt.rcv_wscale = |
2305 | NES_CM_DEFAULT_RCV_WND_SCALE; | |
3c2d774c | 2306 | cm_node->loopbackpartner = loopbackremotenode; |
6492cdf3 | 2307 | memcpy(loopbackremotenode->mpa_frame_buf, private_data, |
615eb715 | 2308 | private_data_len); |
6492cdf3 | 2309 | loopbackremotenode->mpa_frame_size = private_data_len; |
3c2d774c | 2310 | |
6492cdf3 FL |
2311 | /* we are done handling this state. */ |
2312 | /* set node to a TSA state */ | |
3c2d774c | 2313 | cm_node->state = NES_CM_STATE_TSA; |
6492cdf3 FL |
2314 | cm_node->tcp_cntxt.rcv_nxt = |
2315 | loopbackremotenode->tcp_cntxt.loc_seq_num; | |
2316 | loopbackremotenode->tcp_cntxt.rcv_nxt = | |
2317 | cm_node->tcp_cntxt.loc_seq_num; | |
2318 | cm_node->tcp_cntxt.max_snd_wnd = | |
2319 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2320 | loopbackremotenode->tcp_cntxt.max_snd_wnd = | |
2321 | cm_node->tcp_cntxt.rcv_wnd; | |
2322 | cm_node->tcp_cntxt.snd_wnd = | |
2323 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2324 | loopbackremotenode->tcp_cntxt.snd_wnd = | |
2325 | cm_node->tcp_cntxt.rcv_wnd; | |
2326 | cm_node->tcp_cntxt.snd_wscale = | |
2327 | loopbackremotenode->tcp_cntxt.rcv_wscale; | |
2328 | loopbackremotenode->tcp_cntxt.snd_wscale = | |
2329 | cm_node->tcp_cntxt.rcv_wscale; | |
9d5ab133 | 2330 | loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD; |
3c2d774c GS |
2331 | create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ); |
2332 | } | |
2333 | return cm_node; | |
2334 | } | |
2335 | ||
615eb715 TN |
2336 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
2337 | cm_node->mpa_frame_size = private_data_len; | |
6492cdf3 | 2338 | |
615eb715 | 2339 | memcpy(start_buff, private_data, private_data_len); |
3c2d774c GS |
2340 | |
2341 | /* send a syn and goto syn sent state */ | |
2342 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
6492cdf3 FL |
2343 | ret = send_syn(cm_node, 0, NULL); |
2344 | ||
2345 | if (ret) { | |
2346 | /* error in sending the syn free up the cm_node struct */ | |
2347 | nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest " | |
615eb715 TN |
2348 | "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2349 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2350 | cm_node->cm_id); | |
6492cdf3 FL |
2351 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2352 | cm_node = NULL; | |
2353 | } | |
3c2d774c | 2354 | |
615eb715 | 2355 | if (cm_node) { |
6492cdf3 | 2356 | nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X," |
615eb715 TN |
2357 | "port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2358 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2359 | cm_node->cm_id); | |
2360 | } | |
3c2d774c GS |
2361 | |
2362 | return cm_node; | |
2363 | } | |
2364 | ||
2365 | ||
2366 | /** | |
2367 | * mini_cm_accept - accept a connection | |
2368 | * This function is never called | |
2369 | */ | |
615eb715 | 2370 | static int mini_cm_accept(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2371 | { |
2372 | return 0; | |
2373 | } | |
2374 | ||
2375 | ||
2376 | /** | |
2377 | * mini_cm_reject - reject and teardown a connection | |
2378 | */ | |
615eb715 | 2379 | static int mini_cm_reject(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2380 | { |
2381 | int ret = 0; | |
9d5ab133 | 2382 | int err = 0; |
183ecfa3 | 2383 | int passive_state; |
9d5ab133 FL |
2384 | struct nes_cm_event event; |
2385 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
2386 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
3c2d774c | 2387 | |
6492cdf3 | 2388 | nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n", |
615eb715 | 2389 | __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state); |
3c2d774c | 2390 | |
6492cdf3 FL |
2391 | if (cm_node->tcp_cntxt.client) |
2392 | return ret; | |
2393 | cleanup_retrans_entry(cm_node); | |
3c2d774c | 2394 | |
9d5ab133 FL |
2395 | if (!loopback) { |
2396 | passive_state = atomic_add_return(1, &cm_node->passive_state); | |
2397 | if (passive_state == NES_SEND_RESET_EVENT) { | |
2398 | cm_node->state = NES_CM_STATE_CLOSED; | |
2399 | rem_ref_cm_node(cm_core, cm_node); | |
2400 | } else { | |
c5a7d489 FL |
2401 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2402 | rem_ref_cm_node(cm_core, cm_node); | |
2403 | } else { | |
2404 | ret = send_mpa_reject(cm_node); | |
2405 | if (ret) { | |
2406 | cm_node->state = NES_CM_STATE_CLOSED; | |
2407 | err = send_reset(cm_node, NULL); | |
2408 | if (err) | |
2409 | WARN_ON(1); | |
615eb715 | 2410 | } else { |
c5a7d489 | 2411 | cm_id->add_ref(cm_id); |
615eb715 | 2412 | } |
c5a7d489 | 2413 | } |
9d5ab133 FL |
2414 | } |
2415 | } else { | |
2416 | cm_node->cm_id = NULL; | |
c5a7d489 FL |
2417 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2418 | rem_ref_cm_node(cm_core, cm_node); | |
2419 | rem_ref_cm_node(cm_core, loopback); | |
2420 | } else { | |
2421 | event.cm_node = loopback; | |
2422 | event.cm_info.rem_addr = loopback->rem_addr; | |
2423 | event.cm_info.loc_addr = loopback->loc_addr; | |
2424 | event.cm_info.rem_port = loopback->rem_port; | |
2425 | event.cm_info.loc_port = loopback->loc_port; | |
2426 | event.cm_info.cm_id = loopback->cm_id; | |
2427 | cm_event_mpa_reject(&event); | |
2428 | rem_ref_cm_node(cm_core, cm_node); | |
2429 | loopback->state = NES_CM_STATE_CLOSING; | |
9d5ab133 | 2430 | |
c5a7d489 FL |
2431 | cm_id = loopback->cm_id; |
2432 | rem_ref_cm_node(cm_core, loopback); | |
2433 | cm_id->rem_ref(cm_id); | |
2434 | } | |
9d5ab133 FL |
2435 | } |
2436 | ||
3c2d774c GS |
2437 | return ret; |
2438 | } | |
2439 | ||
2440 | ||
2441 | /** | |
2442 | * mini_cm_close | |
2443 | */ | |
1a855fbf | 2444 | static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2445 | { |
2446 | int ret = 0; | |
2447 | ||
2448 | if (!cm_core || !cm_node) | |
2449 | return -EINVAL; | |
2450 | ||
2451 | switch (cm_node->state) { | |
6492cdf3 FL |
2452 | case NES_CM_STATE_SYN_RCVD: |
2453 | case NES_CM_STATE_SYN_SENT: | |
2454 | case NES_CM_STATE_ONE_SIDE_ESTABLISHED: | |
2455 | case NES_CM_STATE_ESTABLISHED: | |
2456 | case NES_CM_STATE_ACCEPTING: | |
2457 | case NES_CM_STATE_MPAREQ_SENT: | |
2458 | case NES_CM_STATE_MPAREQ_RCVD: | |
2459 | cleanup_retrans_entry(cm_node); | |
2460 | send_reset(cm_node, NULL); | |
2461 | break; | |
2462 | case NES_CM_STATE_CLOSE_WAIT: | |
2463 | cm_node->state = NES_CM_STATE_LAST_ACK; | |
2464 | send_fin(cm_node, NULL); | |
2465 | break; | |
2466 | case NES_CM_STATE_FIN_WAIT1: | |
2467 | case NES_CM_STATE_FIN_WAIT2: | |
2468 | case NES_CM_STATE_LAST_ACK: | |
2469 | case NES_CM_STATE_TIME_WAIT: | |
2470 | case NES_CM_STATE_CLOSING: | |
2471 | ret = -1; | |
2472 | break; | |
2473 | case NES_CM_STATE_LISTENING: | |
886f98a3 FL |
2474 | cleanup_retrans_entry(cm_node); |
2475 | send_reset(cm_node, NULL); | |
2476 | break; | |
2477 | case NES_CM_STATE_MPAREJ_RCVD: | |
6492cdf3 FL |
2478 | case NES_CM_STATE_UNKNOWN: |
2479 | case NES_CM_STATE_INITED: | |
2480 | case NES_CM_STATE_CLOSED: | |
c5a7d489 | 2481 | case NES_CM_STATE_LISTENER_DESTROYED: |
6492cdf3 FL |
2482 | ret = rem_ref_cm_node(cm_core, cm_node); |
2483 | break; | |
2484 | case NES_CM_STATE_TSA: | |
2485 | if (cm_node->send_entry) | |
2486 | printk(KERN_ERR "ERROR Close got called from STATE_TSA " | |
615eb715 | 2487 | "send_entry=%p\n", cm_node->send_entry); |
6492cdf3 FL |
2488 | ret = rem_ref_cm_node(cm_core, cm_node); |
2489 | break; | |
3c2d774c | 2490 | } |
3c2d774c GS |
2491 | return ret; |
2492 | } | |
2493 | ||
2494 | ||
2495 | /** | |
2496 | * recv_pkt - recv an ETHERNET packet, and process it through CM | |
2497 | * node state machine | |
2498 | */ | |
4a14f6a7 | 2499 | static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, |
615eb715 | 2500 | struct nes_vnic *nesvnic, struct sk_buff *skb) |
3c2d774c GS |
2501 | { |
2502 | struct nes_cm_node *cm_node = NULL; | |
2503 | struct nes_cm_listener *listener = NULL; | |
2504 | struct iphdr *iph; | |
2505 | struct tcphdr *tcph; | |
2506 | struct nes_cm_info nfo; | |
4a14f6a7 | 2507 | int skb_handled = 1; |
03080e5c | 2508 | __be32 tmp_daddr, tmp_saddr; |
3c2d774c | 2509 | |
6492cdf3 | 2510 | if (!skb) |
4a14f6a7 | 2511 | return 0; |
615eb715 | 2512 | if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) |
4a14f6a7 | 2513 | return 0; |
3c2d774c GS |
2514 | |
2515 | iph = (struct iphdr *)skb->data; | |
2516 | tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr)); | |
3c2d774c GS |
2517 | |
2518 | nfo.loc_addr = ntohl(iph->daddr); | |
2519 | nfo.loc_port = ntohs(tcph->dest); | |
2520 | nfo.rem_addr = ntohl(iph->saddr); | |
2521 | nfo.rem_port = ntohs(tcph->source); | |
2522 | ||
03080e5c HH |
2523 | tmp_daddr = cpu_to_be32(iph->daddr); |
2524 | tmp_saddr = cpu_to_be32(iph->saddr); | |
2525 | ||
63779436 | 2526 | nes_debug(NES_DBG_CM, "Received packet: dest=%pI4:0x%04X src=%pI4:0x%04X\n", |
03080e5c | 2527 | &tmp_daddr, tcph->dest, &tmp_saddr, tcph->source); |
3c2d774c | 2528 | |
6492cdf3 FL |
2529 | do { |
2530 | cm_node = find_node(cm_core, | |
615eb715 TN |
2531 | nfo.rem_port, nfo.rem_addr, |
2532 | nfo.loc_port, nfo.loc_addr); | |
3c2d774c | 2533 | |
3c2d774c | 2534 | if (!cm_node) { |
6492cdf3 FL |
2535 | /* Only type of packet accepted are for */ |
2536 | /* the PASSIVE open (syn only) */ | |
2537 | if ((!tcph->syn) || (tcph->ack)) { | |
4a14f6a7 | 2538 | skb_handled = 0; |
6492cdf3 FL |
2539 | break; |
2540 | } | |
2541 | listener = find_listener(cm_core, nfo.loc_addr, | |
615eb715 TN |
2542 | nfo.loc_port, |
2543 | NES_CM_LISTENER_ACTIVE_STATE); | |
4a14f6a7 FL |
2544 | if (!listener) { |
2545 | nfo.cm_id = NULL; | |
2546 | nfo.conn_type = 0; | |
2547 | nes_debug(NES_DBG_CM, "Unable to find listener for the pkt\n"); | |
2548 | skb_handled = 0; | |
6492cdf3 FL |
2549 | break; |
2550 | } | |
4a14f6a7 FL |
2551 | nfo.cm_id = listener->cm_id; |
2552 | nfo.conn_type = listener->conn_type; | |
6492cdf3 | 2553 | cm_node = make_cm_node(cm_core, nesvnic, &nfo, |
615eb715 | 2554 | listener); |
6492cdf3 FL |
2555 | if (!cm_node) { |
2556 | nes_debug(NES_DBG_CM, "Unable to allocate " | |
615eb715 | 2557 | "node\n"); |
6492cdf3 | 2558 | cm_packets_dropped++; |
3c2d774c | 2559 | atomic_dec(&listener->ref_count); |
6492cdf3 FL |
2560 | dev_kfree_skb_any(skb); |
2561 | break; | |
3c2d774c | 2562 | } |
6492cdf3 FL |
2563 | if (!tcph->rst && !tcph->fin) { |
2564 | cm_node->state = NES_CM_STATE_LISTENING; | |
2565 | } else { | |
2566 | cm_packets_dropped++; | |
2567 | rem_ref_cm_node(cm_core, cm_node); | |
2568 | dev_kfree_skb_any(skb); | |
2569 | break; | |
3c2d774c | 2570 | } |
6492cdf3 FL |
2571 | add_ref_cm_node(cm_node); |
2572 | } else if (cm_node->state == NES_CM_STATE_TSA) { | |
0f0bee8b FL |
2573 | if (cm_node->nesqp->pau_mode) |
2574 | nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp); | |
2575 | else { | |
2576 | rem_ref_cm_node(cm_core, cm_node); | |
2577 | atomic_inc(&cm_accel_dropped_pkts); | |
2578 | dev_kfree_skb_any(skb); | |
2579 | } | |
6492cdf3 | 2580 | break; |
3c2d774c | 2581 | } |
4a14f6a7 FL |
2582 | skb_reset_network_header(skb); |
2583 | skb_set_transport_header(skb, sizeof(*tcph)); | |
2584 | skb->len = ntohs(iph->tot_len); | |
6492cdf3 FL |
2585 | process_packet(cm_node, skb, cm_core); |
2586 | rem_ref_cm_node(cm_core, cm_node); | |
2587 | } while (0); | |
4a14f6a7 | 2588 | return skb_handled; |
3c2d774c GS |
2589 | } |
2590 | ||
2591 | ||
2592 | /** | |
2593 | * nes_cm_alloc_core - allocate a top level instance of a cm core | |
2594 | */ | |
1a855fbf | 2595 | static struct nes_cm_core *nes_cm_alloc_core(void) |
3c2d774c | 2596 | { |
3c2d774c | 2597 | struct nes_cm_core *cm_core; |
3c2d774c GS |
2598 | |
2599 | /* setup the CM core */ | |
2600 | /* alloc top level core control structure */ | |
2601 | cm_core = kzalloc(sizeof(*cm_core), GFP_KERNEL); | |
2602 | if (!cm_core) | |
2603 | return NULL; | |
2604 | ||
2605 | INIT_LIST_HEAD(&cm_core->connected_nodes); | |
2606 | init_timer(&cm_core->tcp_timer); | |
2607 | cm_core->tcp_timer.function = nes_cm_timer_tick; | |
2608 | ||
615eb715 | 2609 | cm_core->mtu = NES_CM_DEFAULT_MTU; |
3c2d774c GS |
2610 | cm_core->state = NES_CM_STATE_INITED; |
2611 | cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS; | |
2612 | ||
3c2d774c GS |
2613 | atomic_set(&cm_core->events_posted, 0); |
2614 | ||
3c2d774c GS |
2615 | cm_core->api = &nes_cm_api; |
2616 | ||
2617 | spin_lock_init(&cm_core->ht_lock); | |
2618 | spin_lock_init(&cm_core->listen_list_lock); | |
2619 | ||
2620 | INIT_LIST_HEAD(&cm_core->listen_list.list); | |
2621 | ||
2622 | nes_debug(NES_DBG_CM, "Init CM Core completed -- cm_core=%p\n", cm_core); | |
2623 | ||
2624 | nes_debug(NES_DBG_CM, "Enable QUEUE EVENTS\n"); | |
2625 | cm_core->event_wq = create_singlethread_workqueue("nesewq"); | |
2626 | cm_core->post_event = nes_cm_post_event; | |
2627 | nes_debug(NES_DBG_CM, "Enable QUEUE DISCONNECTS\n"); | |
2628 | cm_core->disconn_wq = create_singlethread_workqueue("nesdwq"); | |
2629 | ||
2630 | print_core(cm_core); | |
2631 | return cm_core; | |
2632 | } | |
2633 | ||
2634 | ||
2635 | /** | |
2636 | * mini_cm_dealloc_core - deallocate a top level instance of a cm core | |
2637 | */ | |
1a855fbf | 2638 | static int mini_cm_dealloc_core(struct nes_cm_core *cm_core) |
3c2d774c GS |
2639 | { |
2640 | nes_debug(NES_DBG_CM, "De-Alloc CM Core (%p)\n", cm_core); | |
2641 | ||
2642 | if (!cm_core) | |
2643 | return -EINVAL; | |
2644 | ||
2645 | barrier(); | |
2646 | ||
615eb715 | 2647 | if (timer_pending(&cm_core->tcp_timer)) |
3c2d774c | 2648 | del_timer(&cm_core->tcp_timer); |
3c2d774c GS |
2649 | |
2650 | destroy_workqueue(cm_core->event_wq); | |
2651 | destroy_workqueue(cm_core->disconn_wq); | |
2652 | nes_debug(NES_DBG_CM, "\n"); | |
2653 | kfree(cm_core); | |
2654 | ||
2655 | return 0; | |
2656 | } | |
2657 | ||
2658 | ||
2659 | /** | |
2660 | * mini_cm_get | |
2661 | */ | |
1a855fbf | 2662 | static int mini_cm_get(struct nes_cm_core *cm_core) |
3c2d774c GS |
2663 | { |
2664 | return cm_core->state; | |
2665 | } | |
2666 | ||
2667 | ||
2668 | /** | |
2669 | * mini_cm_set | |
2670 | */ | |
1a855fbf | 2671 | static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value) |
3c2d774c GS |
2672 | { |
2673 | int ret = 0; | |
2674 | ||
2675 | switch (type) { | |
9d5ab133 FL |
2676 | case NES_CM_SET_PKT_SIZE: |
2677 | cm_core->mtu = value; | |
2678 | break; | |
2679 | case NES_CM_SET_FREE_PKT_Q_SIZE: | |
2680 | cm_core->free_tx_pkt_max = value; | |
2681 | break; | |
2682 | default: | |
2683 | /* unknown set option */ | |
2684 | ret = -EINVAL; | |
3c2d774c GS |
2685 | } |
2686 | ||
2687 | return ret; | |
2688 | } | |
2689 | ||
2690 | ||
2691 | /** | |
2692 | * nes_cm_init_tsa_conn setup HW; MPA frames must be | |
2693 | * successfully exchanged when this is called | |
2694 | */ | |
2695 | static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_node) | |
2696 | { | |
2697 | int ret = 0; | |
2698 | ||
2699 | if (!nesqp) | |
2700 | return -EINVAL; | |
2701 | ||
2702 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_IPV4 | | |
615eb715 TN |
2703 | NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG | |
2704 | NES_QPCONTEXT_MISC_DROS); | |
3c2d774c GS |
2705 | |
2706 | if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale) | |
2707 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WSCALE); | |
2708 | ||
2709 | nesqp->nesqp_context->misc2 |= cpu_to_le32(64 << NES_QPCONTEXT_MISC2_TTL_SHIFT); | |
2710 | ||
2711 | nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16); | |
2712 | ||
2713 | nesqp->nesqp_context->tcp_state_flow_label |= cpu_to_le32( | |
615eb715 | 2714 | (u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT); |
3c2d774c GS |
2715 | |
2716 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2717 | (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) & |
2718 | NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK); | |
3c2d774c GS |
2719 | |
2720 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2721 | (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) & |
2722 | NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK); | |
3c2d774c GS |
2723 | |
2724 | nesqp->nesqp_context->keepalive = cpu_to_le32(0x80); | |
2725 | nesqp->nesqp_context->ts_recent = 0; | |
2726 | nesqp->nesqp_context->ts_age = 0; | |
2727 | nesqp->nesqp_context->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2728 | nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd); | |
2729 | nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); | |
2730 | nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd << | |
615eb715 | 2731 | cm_node->tcp_cntxt.rcv_wscale); |
3c2d774c GS |
2732 | nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
2733 | nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2734 | nesqp->nesqp_context->srtt = 0; | |
2735 | nesqp->nesqp_context->rttvar = cpu_to_le32(0x6); | |
2736 | nesqp->nesqp_context->ssthresh = cpu_to_le32(0x3FFFC000); | |
615eb715 | 2737 | nesqp->nesqp_context->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss); |
3c2d774c GS |
2738 | nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); |
2739 | nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2740 | nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd); | |
2741 | ||
2742 | nes_debug(NES_DBG_CM, "QP%u: rcv_nxt = 0x%08X, snd_nxt = 0x%08X," | |
615eb715 TN |
2743 | " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n", |
2744 | nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt), | |
2745 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
2746 | cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale), | |
2747 | le32_to_cpu(nesqp->nesqp_context->rcv_wnd), | |
2748 | le32_to_cpu(nesqp->nesqp_context->misc)); | |
3c2d774c GS |
2749 | nes_debug(NES_DBG_CM, " snd_wnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->snd_wnd)); |
2750 | nes_debug(NES_DBG_CM, " snd_cwnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->cwnd)); | |
2751 | nes_debug(NES_DBG_CM, " max_swnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->max_snd_wnd)); | |
2752 | ||
2753 | nes_debug(NES_DBG_CM, "Change cm_node state to TSA\n"); | |
2754 | cm_node->state = NES_CM_STATE_TSA; | |
2755 | ||
2756 | return ret; | |
2757 | } | |
2758 | ||
2759 | ||
2760 | /** | |
2761 | * nes_cm_disconn | |
2762 | */ | |
2763 | int nes_cm_disconn(struct nes_qp *nesqp) | |
2764 | { | |
873fcdd4 | 2765 | struct disconn_work *work; |
3c2d774c | 2766 | |
873fcdd4 DW |
2767 | work = kzalloc(sizeof *work, GFP_ATOMIC); |
2768 | if (!work) | |
615eb715 | 2769 | return -ENOMEM; /* Timer will clean up */ |
3c2d774c | 2770 | |
873fcdd4 DW |
2771 | nes_add_ref(&nesqp->ibqp); |
2772 | work->nesqp = nesqp; | |
2773 | INIT_WORK(&work->work, nes_disconnect_worker); | |
2774 | queue_work(g_cm_core->disconn_wq, &work->work); | |
3c2d774c GS |
2775 | return 0; |
2776 | } | |
2777 | ||
2778 | ||
2779 | /** | |
2780 | * nes_disconnect_worker | |
2781 | */ | |
1a855fbf | 2782 | static void nes_disconnect_worker(struct work_struct *work) |
3c2d774c | 2783 | { |
873fcdd4 DW |
2784 | struct disconn_work *dwork = container_of(work, struct disconn_work, work); |
2785 | struct nes_qp *nesqp = dwork->nesqp; | |
3c2d774c | 2786 | |
873fcdd4 | 2787 | kfree(dwork); |
3c2d774c | 2788 | nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n", |
615eb715 | 2789 | nesqp->last_aeq, nesqp->hwqp.qp_id); |
3c2d774c | 2790 | nes_cm_disconn_true(nesqp); |
c4c3f279 | 2791 | nes_rem_ref(&nesqp->ibqp); |
3c2d774c GS |
2792 | } |
2793 | ||
2794 | ||
2795 | /** | |
2796 | * nes_cm_disconn_true | |
2797 | */ | |
1a855fbf | 2798 | static int nes_cm_disconn_true(struct nes_qp *nesqp) |
3c2d774c GS |
2799 | { |
2800 | unsigned long flags; | |
2801 | int ret = 0; | |
2802 | struct iw_cm_id *cm_id; | |
2803 | struct iw_cm_event cm_event; | |
2804 | struct nes_vnic *nesvnic; | |
2805 | u16 last_ae; | |
2806 | u8 original_hw_tcp_state; | |
2807 | u8 original_ibqp_state; | |
d0c49bf3 | 2808 | int disconn_status = 0; |
b29a4fc4 DW |
2809 | int issue_disconn = 0; |
2810 | int issue_close = 0; | |
2811 | int issue_flush = 0; | |
2812 | u32 flush_q = NES_CQP_FLUSH_RQ; | |
2813 | struct ib_event ibevent; | |
3c2d774c GS |
2814 | |
2815 | if (!nesqp) { | |
2816 | nes_debug(NES_DBG_CM, "disconnect_worker nesqp is NULL\n"); | |
2817 | return -1; | |
2818 | } | |
2819 | ||
2820 | spin_lock_irqsave(&nesqp->lock, flags); | |
2821 | cm_id = nesqp->cm_id; | |
2822 | /* make sure we havent already closed this connection */ | |
2823 | if (!cm_id) { | |
2824 | nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n", | |
615eb715 | 2825 | nesqp->hwqp.qp_id); |
3c2d774c | 2826 | spin_unlock_irqrestore(&nesqp->lock, flags); |
3c2d774c GS |
2827 | return -1; |
2828 | } | |
2829 | ||
2830 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
2831 | nes_debug(NES_DBG_CM, "Disconnecting QP%u\n", nesqp->hwqp.qp_id); | |
2832 | ||
2833 | original_hw_tcp_state = nesqp->hw_tcp_state; | |
615eb715 | 2834 | original_ibqp_state = nesqp->ibqp_state; |
3c2d774c GS |
2835 | last_ae = nesqp->last_aeq; |
2836 | ||
b29a4fc4 DW |
2837 | if (nesqp->term_flags) { |
2838 | issue_disconn = 1; | |
2839 | issue_close = 1; | |
2840 | nesqp->cm_id = NULL; | |
2841 | if (nesqp->flush_issued == 0) { | |
2842 | nesqp->flush_issued = 1; | |
2843 | issue_flush = 1; | |
2844 | } | |
2845 | } else if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) || | |
2846 | ((original_ibqp_state == IB_QPS_RTS) && | |
2847 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
2848 | issue_disconn = 1; | |
2849 | if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) | |
d0c49bf3 | 2850 | disconn_status = -ECONNRESET; |
b29a4fc4 DW |
2851 | } |
2852 | ||
2853 | if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) || | |
2854 | (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) || | |
2855 | (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) || | |
2856 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
2857 | issue_close = 1; | |
2858 | nesqp->cm_id = NULL; | |
2859 | if (nesqp->flush_issued == 0) { | |
2860 | nesqp->flush_issued = 1; | |
2861 | issue_flush = 1; | |
2862 | } | |
2863 | } | |
3c2d774c | 2864 | |
b29a4fc4 DW |
2865 | spin_unlock_irqrestore(&nesqp->lock, flags); |
2866 | ||
2867 | if ((issue_flush) && (nesqp->destroyed == 0)) { | |
2868 | /* Flush the queue(s) */ | |
2869 | if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE) | |
2870 | flush_q |= NES_CQP_FLUSH_SQ; | |
2871 | flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1); | |
2872 | ||
2873 | if (nesqp->term_flags) { | |
2874 | ibevent.device = nesqp->ibqp.device; | |
2875 | ibevent.event = nesqp->terminate_eventtype; | |
2876 | ibevent.element.qp = &nesqp->ibqp; | |
2877 | nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context); | |
2878 | } | |
2879 | } | |
3c2d774c | 2880 | |
b29a4fc4 DW |
2881 | if ((cm_id) && (cm_id->event_handler)) { |
2882 | if (issue_disconn) { | |
3c2d774c GS |
2883 | atomic_inc(&cm_disconnects); |
2884 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
b29a4fc4 | 2885 | cm_event.status = disconn_status; |
3c2d774c GS |
2886 | cm_event.local_addr = cm_id->local_addr; |
2887 | cm_event.remote_addr = cm_id->remote_addr; | |
2888 | cm_event.private_data = NULL; | |
2889 | cm_event.private_data_len = 0; | |
2890 | ||
6492cdf3 | 2891 | nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event" |
615eb715 TN |
2892 | " for QP%u, SQ Head = %u, SQ Tail = %u. " |
2893 | "cm_id = %p, refcount = %u.\n", | |
2894 | nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, | |
2895 | nesqp->hwqp.sq_tail, cm_id, | |
2896 | atomic_read(&nesqp->refcount)); | |
3c2d774c | 2897 | |
3c2d774c GS |
2898 | ret = cm_id->event_handler(cm_id, &cm_event); |
2899 | if (ret) | |
6492cdf3 | 2900 | nes_debug(NES_DBG_CM, "OFA CM event_handler " |
615eb715 | 2901 | "returned, ret=%d\n", ret); |
3c2d774c GS |
2902 | } |
2903 | ||
b29a4fc4 | 2904 | if (issue_close) { |
3c2d774c | 2905 | atomic_inc(&cm_closes); |
3c2d774c GS |
2906 | nes_disconnect(nesqp, 1); |
2907 | ||
2908 | cm_id->provider_data = nesqp; | |
2909 | /* Send up the close complete event */ | |
2910 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 2911 | cm_event.status = 0; |
3c2d774c GS |
2912 | cm_event.provider_data = cm_id->provider_data; |
2913 | cm_event.local_addr = cm_id->local_addr; | |
2914 | cm_event.remote_addr = cm_id->remote_addr; | |
2915 | cm_event.private_data = NULL; | |
2916 | cm_event.private_data_len = 0; | |
2917 | ||
2918 | ret = cm_id->event_handler(cm_id, &cm_event); | |
615eb715 | 2919 | if (ret) |
3c2d774c | 2920 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3c2d774c GS |
2921 | |
2922 | cm_id->rem_ref(cm_id); | |
3c2d774c | 2923 | } |
3c2d774c | 2924 | } |
3c2d774c GS |
2925 | |
2926 | return 0; | |
2927 | } | |
2928 | ||
2929 | ||
2930 | /** | |
2931 | * nes_disconnect | |
2932 | */ | |
1a855fbf | 2933 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt) |
3c2d774c GS |
2934 | { |
2935 | int ret = 0; | |
2936 | struct nes_vnic *nesvnic; | |
2937 | struct nes_device *nesdev; | |
c12e56ef | 2938 | struct nes_ib_device *nesibdev; |
3c2d774c GS |
2939 | |
2940 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
2941 | if (!nesvnic) | |
2942 | return -EINVAL; | |
2943 | ||
2944 | nesdev = nesvnic->nesdev; | |
c12e56ef | 2945 | nesibdev = nesvnic->nesibdev; |
3c2d774c GS |
2946 | |
2947 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 2948 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c GS |
2949 | |
2950 | if (nesqp->active_conn) { | |
2951 | ||
2952 | /* indicate this connection is NOT active */ | |
2953 | nesqp->active_conn = 0; | |
2954 | } else { | |
2955 | /* Need to free the Last Streaming Mode Message */ | |
2956 | if (nesqp->ietf_frame) { | |
c12e56ef FL |
2957 | if (nesqp->lsmm_mr) |
2958 | nesibdev->ibdev.dereg_mr(nesqp->lsmm_mr); | |
3c2d774c | 2959 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
2960 | nesqp->private_data_len + nesqp->ietf_frame_size, |
2961 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
3c2d774c GS |
2962 | } |
2963 | } | |
2964 | ||
2965 | /* close the CM node down if it is still active */ | |
2966 | if (nesqp->cm_node) { | |
2967 | nes_debug(NES_DBG_CM, "Call close API\n"); | |
2968 | ||
2969 | g_cm_core->api->close(g_cm_core, nesqp->cm_node); | |
3c2d774c GS |
2970 | } |
2971 | ||
2972 | return ret; | |
2973 | } | |
2974 | ||
2975 | ||
2976 | /** | |
2977 | * nes_accept | |
2978 | */ | |
2979 | int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
2980 | { | |
2981 | u64 u64temp; | |
2982 | struct ib_qp *ibqp; | |
2983 | struct nes_qp *nesqp; | |
2984 | struct nes_vnic *nesvnic; | |
2985 | struct nes_device *nesdev; | |
2986 | struct nes_cm_node *cm_node; | |
2987 | struct nes_adapter *adapter; | |
2988 | struct ib_qp_attr attr; | |
2989 | struct iw_cm_event cm_event; | |
2990 | struct nes_hw_qp_wqe *wqe; | |
2991 | struct nes_v4_quad nes_quad; | |
30da7cff | 2992 | u32 crc_value; |
3c2d774c | 2993 | int ret; |
183ecfa3 | 2994 | int passive_state; |
c12e56ef FL |
2995 | struct nes_ib_device *nesibdev; |
2996 | struct ib_mr *ibmr = NULL; | |
2997 | struct ib_phys_buf ibphysbuf; | |
2998 | struct nes_pd *nespd; | |
7a5efb62 | 2999 | u64 tagged_offset; |
615eb715 TN |
3000 | u8 mpa_frame_offset = 0; |
3001 | struct ietf_mpa_v2 *mpa_v2_frame; | |
3002 | u8 start_addr = 0; | |
3003 | u8 *start_ptr = &start_addr; | |
3004 | u8 **start_buff = &start_ptr; | |
3005 | u16 buff_len = 0; | |
c12e56ef | 3006 | |
3c2d774c GS |
3007 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
3008 | if (!ibqp) | |
3009 | return -EINVAL; | |
3010 | ||
3011 | /* get all our handles */ | |
3012 | nesqp = to_nesqp(ibqp); | |
3013 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3014 | nesdev = nesvnic->nesdev; | |
3015 | adapter = nesdev->nesadapter; | |
3016 | ||
3c2d774c | 3017 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
6492cdf3 FL |
3018 | nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p," |
3019 | "%s\n", cm_node, nesvnic, nesvnic->netdev, | |
3020 | nesvnic->netdev->name); | |
3c2d774c | 3021 | |
c5a7d489 FL |
3022 | if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) { |
3023 | if (cm_node->loopbackpartner) | |
3024 | rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner); | |
3025 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3026 | return -EINVAL; | |
3027 | } | |
3028 | ||
dae58728 FL |
3029 | passive_state = atomic_add_return(1, &cm_node->passive_state); |
3030 | if (passive_state == NES_SEND_RESET_EVENT) { | |
3031 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3032 | return -ECONNRESET; | |
3033 | } | |
3034 | ||
3c2d774c GS |
3035 | /* associate the node with the QP */ |
3036 | nesqp->cm_node = (void *)cm_node; | |
6492cdf3 | 3037 | cm_node->nesqp = nesqp; |
3c2d774c | 3038 | |
6492cdf3 FL |
3039 | nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", |
3040 | nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); | |
3c2d774c GS |
3041 | atomic_inc(&cm_accepts); |
3042 | ||
3043 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 3044 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c | 3045 | |
615eb715 | 3046 | nesqp->ietf_frame_size = sizeof(struct ietf_mpa_v2); |
6492cdf3 FL |
3047 | /* allocate the ietf frame and space for private data */ |
3048 | nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev, | |
615eb715 TN |
3049 | nesqp->ietf_frame_size + conn_param->private_data_len, |
3050 | &nesqp->ietf_frame_pbase); | |
3c2d774c | 3051 | |
6492cdf3 | 3052 | if (!nesqp->ietf_frame) { |
615eb715 | 3053 | nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n"); |
6492cdf3 FL |
3054 | return -ENOMEM; |
3055 | } | |
615eb715 | 3056 | mpa_v2_frame = (struct ietf_mpa_v2 *)nesqp->ietf_frame; |
3c2d774c | 3057 | |
615eb715 TN |
3058 | if (cm_node->mpa_frame_rev == IETF_MPA_V1) |
3059 | mpa_frame_offset = 4; | |
3c2d774c | 3060 | |
615eb715 TN |
3061 | memcpy(mpa_v2_frame->priv_data, conn_param->private_data, |
3062 | conn_param->private_data_len); | |
3c2d774c | 3063 | |
615eb715 TN |
3064 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, nesqp->ietf_frame, MPA_KEY_REPLY); |
3065 | nesqp->private_data_len = conn_param->private_data_len; | |
3c2d774c | 3066 | |
6492cdf3 FL |
3067 | /* setup our first outgoing iWarp send WQE (the IETF frame response) */ |
3068 | wqe = &nesqp->hwqp.sq_vbase[0]; | |
3069 | ||
3070 | if (cm_id->remote_addr.sin_addr.s_addr != | |
615eb715 | 3071 | cm_id->local_addr.sin_addr.s_addr) { |
6492cdf3 | 3072 | u64temp = (unsigned long)nesqp; |
c12e56ef FL |
3073 | nesibdev = nesvnic->nesibdev; |
3074 | nespd = nesqp->nespd; | |
615eb715 TN |
3075 | ibphysbuf.addr = nesqp->ietf_frame_pbase + mpa_frame_offset; |
3076 | ibphysbuf.size = buff_len; | |
3077 | tagged_offset = (u64)(unsigned long)*start_buff; | |
c12e56ef | 3078 | ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd, |
615eb715 TN |
3079 | &ibphysbuf, 1, |
3080 | IB_ACCESS_LOCAL_WRITE, | |
3081 | &tagged_offset); | |
c12e56ef FL |
3082 | if (!ibmr) { |
3083 | nes_debug(NES_DBG_CM, "Unable to register memory region" | |
615eb715 TN |
3084 | "for lSMM for cm_node = %p \n", |
3085 | cm_node); | |
9256b251 | 3086 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
3087 | nesqp->private_data_len + nesqp->ietf_frame_size, |
3088 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
c12e56ef FL |
3089 | return -ENOMEM; |
3090 | } | |
3091 | ||
3092 | ibmr->pd = &nespd->ibpd; | |
3093 | ibmr->device = nespd->ibpd.device; | |
3094 | nesqp->lsmm_mr = ibmr; | |
3095 | ||
615eb715 | 3096 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
6492cdf3 | 3097 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3098 | NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, |
3099 | u64temp); | |
6492cdf3 FL |
3100 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = |
3101 | cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING | | |
615eb715 | 3102 | NES_IWARP_SQ_WQE_WRPDU); |
6492cdf3 | 3103 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = |
615eb715 | 3104 | cpu_to_le32(buff_len); |
c12e56ef | 3105 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3106 | NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, |
3107 | (u64)(unsigned long)(*start_buff)); | |
6492cdf3 | 3108 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = |
615eb715 | 3109 | cpu_to_le32(buff_len); |
c12e56ef | 3110 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey; |
d2fa9b26 FL |
3111 | if (nesqp->sq_kmapped) { |
3112 | nesqp->sq_kmapped = 0; | |
3113 | kunmap(nesqp->page); | |
3114 | } | |
6492cdf3 FL |
3115 | |
3116 | nesqp->nesqp_context->ird_ord_sizes |= | |
3117 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
615eb715 | 3118 | NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3119 | } else { |
3120 | nesqp->nesqp_context->ird_ord_sizes |= | |
9d5ab133 | 3121 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3122 | } |
3123 | nesqp->skip_lsmm = 1; | |
3c2d774c GS |
3124 | |
3125 | ||
3126 | /* Cache the cm_id in the qp */ | |
3127 | nesqp->cm_id = cm_id; | |
3128 | cm_node->cm_id = cm_id; | |
3129 | ||
3130 | /* nesqp->cm_node = (void *)cm_id->provider_data; */ | |
3131 | cm_id->provider_data = nesqp; | |
615eb715 | 3132 | nesqp->active_conn = 0; |
3c2d774c | 3133 | |
6492cdf3 FL |
3134 | if (cm_node->state == NES_CM_STATE_TSA) |
3135 | nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n", | |
615eb715 | 3136 | cm_node); |
6492cdf3 | 3137 | |
3c2d774c GS |
3138 | nes_cm_init_tsa_conn(nesqp, cm_node); |
3139 | ||
6492cdf3 FL |
3140 | nesqp->nesqp_context->tcpPorts[0] = |
3141 | cpu_to_le16(ntohs(cm_id->local_addr.sin_port)); | |
3142 | nesqp->nesqp_context->tcpPorts[1] = | |
3143 | cpu_to_le16(ntohs(cm_id->remote_addr.sin_port)); | |
3144 | ||
3145 | if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) | |
3146 | nesqp->nesqp_context->ip0 = | |
3147 | cpu_to_le32(ntohl(nesvnic->local_ipaddr)); | |
3148 | else | |
3149 | nesqp->nesqp_context->ip0 = | |
3150 | cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr)); | |
3c2d774c GS |
3151 | |
3152 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
615eb715 TN |
3153 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3154 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3155 | |
6492cdf3 FL |
3156 | nesqp->nesqp_context->arp_index_vlan |= |
3157 | cpu_to_le32(nes_arp_table(nesdev, | |
615eb715 TN |
3158 | le32_to_cpu(nesqp->nesqp_context->ip0), NULL, |
3159 | NES_ARP_RESOLVE) << 16); | |
3c2d774c GS |
3160 | |
3161 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
6492cdf3 | 3162 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); |
3c2d774c GS |
3163 | |
3164 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3165 | ||
3166 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32( | |
6492cdf3 FL |
3167 | ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT)); |
3168 | nesqp->nesqp_context->ird_ord_sizes |= | |
3169 | cpu_to_le32((u32)conn_param->ord); | |
3c2d774c GS |
3170 | |
3171 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
6492cdf3 FL |
3172 | nes_quad.DstIpAdrIndex = |
3173 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
3174 | if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) | |
3175 | nes_quad.SrcIpadr = nesvnic->local_ipaddr; | |
3176 | else | |
3177 | nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr; | |
3178 | nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port; | |
3179 | nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port; | |
3c2d774c GS |
3180 | |
3181 | /* Produce hash key */ | |
30da7cff FL |
3182 | crc_value = get_crc_value(&nes_quad); |
3183 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3184 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n", |
615eb715 | 3185 | nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask); |
3c2d774c GS |
3186 | |
3187 | nesqp->hte_index &= adapter->hte_index_mask; | |
3188 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3189 | ||
3190 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); | |
3191 | ||
6492cdf3 | 3192 | nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = " |
615eb715 TN |
3193 | "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + " |
3194 | "private data length=%u.\n", nesqp->hwqp.qp_id, | |
3195 | ntohl(cm_id->remote_addr.sin_addr.s_addr), | |
3196 | ntohs(cm_id->remote_addr.sin_port), | |
3197 | ntohl(cm_id->local_addr.sin_addr.s_addr), | |
3198 | ntohs(cm_id->local_addr.sin_port), | |
3199 | le32_to_cpu(nesqp->nesqp_context->rcv_nxt), | |
3200 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
3201 | buff_len); | |
3c2d774c | 3202 | |
73ac36ea | 3203 | /* notify OF layer that accept event was successful */ |
3c2d774c | 3204 | cm_id->add_ref(cm_id); |
9256b251 | 3205 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3206 | |
3207 | cm_event.event = IW_CM_EVENT_ESTABLISHED; | |
d0c49bf3 | 3208 | cm_event.status = 0; |
3c2d774c GS |
3209 | cm_event.provider_data = (void *)nesqp; |
3210 | cm_event.local_addr = cm_id->local_addr; | |
3211 | cm_event.remote_addr = cm_id->remote_addr; | |
3212 | cm_event.private_data = NULL; | |
3213 | cm_event.private_data_len = 0; | |
3214 | ret = cm_id->event_handler(cm_id, &cm_event); | |
183ecfa3 FL |
3215 | attr.qp_state = IB_QPS_RTS; |
3216 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3217 | if (cm_node->loopbackpartner) { |
6492cdf3 FL |
3218 | cm_node->loopbackpartner->mpa_frame_size = |
3219 | nesqp->private_data_len; | |
3c2d774c | 3220 | /* copy entire MPA frame to our cm_node's frame */ |
6492cdf3 | 3221 | memcpy(cm_node->loopbackpartner->mpa_frame_buf, |
615eb715 | 3222 | conn_param->private_data, conn_param->private_data_len); |
3c2d774c GS |
3223 | create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED); |
3224 | } | |
3225 | if (ret) | |
6492cdf3 | 3226 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3227 | "ret=%d\n", __func__, __LINE__, ret); |
3c2d774c GS |
3228 | |
3229 | return 0; | |
3230 | } | |
3231 | ||
3232 | ||
3233 | /** | |
3234 | * nes_reject | |
3235 | */ | |
3236 | int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
3237 | { | |
3238 | struct nes_cm_node *cm_node; | |
9d5ab133 | 3239 | struct nes_cm_node *loopback; |
3c2d774c | 3240 | struct nes_cm_core *cm_core; |
615eb715 | 3241 | u8 *start_buff; |
3c2d774c GS |
3242 | |
3243 | atomic_inc(&cm_rejects); | |
615eb715 | 3244 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
9d5ab133 | 3245 | loopback = cm_node->loopbackpartner; |
3c2d774c | 3246 | cm_core = cm_node->cm_core; |
9d5ab133 | 3247 | cm_node->cm_id = cm_id; |
3c2d774c | 3248 | |
615eb715 | 3249 | if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER) |
9d5ab133 FL |
3250 | return -EINVAL; |
3251 | ||
9d5ab133 FL |
3252 | if (loopback) { |
3253 | memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len); | |
3254 | loopback->mpa_frame.priv_data_len = pdata_len; | |
615eb715 | 3255 | loopback->mpa_frame_size = pdata_len; |
9d5ab133 | 3256 | } else { |
615eb715 TN |
3257 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
3258 | cm_node->mpa_frame_size = pdata_len; | |
3259 | memcpy(start_buff, pdata, pdata_len); | |
9d5ab133 | 3260 | } |
615eb715 | 3261 | return cm_core->api->reject(cm_core, cm_node); |
3c2d774c GS |
3262 | } |
3263 | ||
3264 | ||
3265 | /** | |
3266 | * nes_connect | |
3267 | * setup and launch cm connect node | |
3268 | */ | |
3269 | int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
3270 | { | |
3271 | struct ib_qp *ibqp; | |
3272 | struct nes_qp *nesqp; | |
3273 | struct nes_vnic *nesvnic; | |
3274 | struct nes_device *nesdev; | |
3275 | struct nes_cm_node *cm_node; | |
3276 | struct nes_cm_info cm_info; | |
53094c38 | 3277 | int apbvt_set = 0; |
3c2d774c GS |
3278 | |
3279 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); | |
3280 | if (!ibqp) | |
3281 | return -EINVAL; | |
3282 | nesqp = to_nesqp(ibqp); | |
3283 | if (!nesqp) | |
3284 | return -EINVAL; | |
3285 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3286 | if (!nesvnic) | |
3287 | return -EINVAL; | |
615eb715 | 3288 | nesdev = nesvnic->nesdev; |
3c2d774c GS |
3289 | if (!nesdev) |
3290 | return -EINVAL; | |
3291 | ||
c5a7d489 FL |
3292 | if (!(cm_id->local_addr.sin_port) || !(cm_id->remote_addr.sin_port)) |
3293 | return -EINVAL; | |
3294 | ||
6492cdf3 | 3295 | nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = " |
615eb715 TN |
3296 | "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id, |
3297 | ntohl(nesvnic->local_ipaddr), | |
3298 | ntohl(cm_id->remote_addr.sin_addr.s_addr), | |
3299 | ntohs(cm_id->remote_addr.sin_port), | |
3300 | ntohl(cm_id->local_addr.sin_addr.s_addr), | |
3301 | ntohs(cm_id->local_addr.sin_port)); | |
3c2d774c | 3302 | |
6492cdf3 | 3303 | atomic_inc(&cm_connects); |
3c2d774c GS |
3304 | nesqp->active_conn = 1; |
3305 | ||
3c2d774c GS |
3306 | /* cache the cm_id in the qp */ |
3307 | nesqp->cm_id = cm_id; | |
3308 | ||
3309 | cm_id->provider_data = nesqp; | |
3310 | ||
3c2d774c GS |
3311 | nesqp->private_data_len = conn_param->private_data_len; |
3312 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32((u32)conn_param->ord); | |
3313 | nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord); | |
6492cdf3 | 3314 | nes_debug(NES_DBG_CM, "mpa private data len =%u\n", |
615eb715 | 3315 | conn_param->private_data_len); |
3c2d774c | 3316 | |
6492cdf3 | 3317 | if (cm_id->local_addr.sin_addr.s_addr != |
615eb715 | 3318 | cm_id->remote_addr.sin_addr.s_addr) { |
3c2d774c | 3319 | nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port), |
615eb715 | 3320 | PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD); |
53094c38 FL |
3321 | apbvt_set = 1; |
3322 | } | |
3c2d774c GS |
3323 | |
3324 | /* set up the connection params for the node */ | |
6492cdf3 FL |
3325 | cm_info.loc_addr = htonl(cm_id->local_addr.sin_addr.s_addr); |
3326 | cm_info.loc_port = htons(cm_id->local_addr.sin_port); | |
3327 | cm_info.rem_addr = htonl(cm_id->remote_addr.sin_addr.s_addr); | |
3328 | cm_info.rem_port = htons(cm_id->remote_addr.sin_port); | |
3c2d774c GS |
3329 | cm_info.cm_id = cm_id; |
3330 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3331 | ||
3332 | cm_id->add_ref(cm_id); | |
3c2d774c GS |
3333 | |
3334 | /* create a connect CM node connection */ | |
6492cdf3 | 3335 | cm_node = g_cm_core->api->connect(g_cm_core, nesvnic, |
615eb715 TN |
3336 | conn_param->private_data_len, (void *)conn_param->private_data, |
3337 | &cm_info); | |
3c2d774c | 3338 | if (!cm_node) { |
53094c38 | 3339 | if (apbvt_set) |
3c2d774c | 3340 | nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port), |
615eb715 TN |
3341 | PCI_FUNC(nesdev->pcidev->devfn), |
3342 | NES_MANAGE_APBVT_DEL); | |
6492cdf3 | 3343 | |
3c2d774c GS |
3344 | cm_id->rem_ref(cm_id); |
3345 | return -ENOMEM; | |
3346 | } | |
3347 | ||
53094c38 | 3348 | cm_node->apbvt_set = apbvt_set; |
3c2d774c | 3349 | nesqp->cm_node = cm_node; |
6492cdf3 | 3350 | cm_node->nesqp = nesqp; |
d7ffd507 | 3351 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3352 | |
3353 | return 0; | |
3354 | } | |
3355 | ||
3356 | ||
3357 | /** | |
3358 | * nes_create_listen | |
3359 | */ | |
3360 | int nes_create_listen(struct iw_cm_id *cm_id, int backlog) | |
3361 | { | |
3362 | struct nes_vnic *nesvnic; | |
3363 | struct nes_cm_listener *cm_node; | |
3364 | struct nes_cm_info cm_info; | |
3c2d774c GS |
3365 | int err; |
3366 | ||
3c2d774c GS |
3367 | nes_debug(NES_DBG_CM, "cm_id = %p, local port = 0x%04X.\n", |
3368 | cm_id, ntohs(cm_id->local_addr.sin_port)); | |
3369 | ||
3370 | nesvnic = to_nesvnic(cm_id->device); | |
3371 | if (!nesvnic) | |
3372 | return -EINVAL; | |
69d51023 | 3373 | |
3c2d774c GS |
3374 | nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n", |
3375 | nesvnic, nesvnic->netdev, nesvnic->netdev->name); | |
3376 | ||
3377 | nes_debug(NES_DBG_CM, "nesvnic->local_ipaddr=0x%08x, sin_addr.s_addr=0x%08x\n", | |
3378 | nesvnic->local_ipaddr, cm_id->local_addr.sin_addr.s_addr); | |
3379 | ||
3380 | /* setup listen params in our api call struct */ | |
3381 | cm_info.loc_addr = nesvnic->local_ipaddr; | |
3382 | cm_info.loc_port = cm_id->local_addr.sin_port; | |
3383 | cm_info.backlog = backlog; | |
3384 | cm_info.cm_id = cm_id; | |
3385 | ||
3386 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3387 | ||
3388 | ||
3389 | cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info); | |
3390 | if (!cm_node) { | |
6492cdf3 | 3391 | printk(KERN_ERR "%s[%u] Error returned from listen API call\n", |
615eb715 | 3392 | __func__, __LINE__); |
3c2d774c GS |
3393 | return -ENOMEM; |
3394 | } | |
3395 | ||
3396 | cm_id->provider_data = cm_node; | |
3397 | ||
3398 | if (!cm_node->reused_node) { | |
6492cdf3 | 3399 | err = nes_manage_apbvt(nesvnic, |
615eb715 TN |
3400 | ntohs(cm_id->local_addr.sin_port), |
3401 | PCI_FUNC(nesvnic->nesdev->pcidev->devfn), | |
3402 | NES_MANAGE_APBVT_ADD); | |
3c2d774c | 3403 | if (err) { |
6492cdf3 | 3404 | printk(KERN_ERR "nes_manage_apbvt call returned %d.\n", |
615eb715 | 3405 | err); |
3c2d774c GS |
3406 | g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); |
3407 | return err; | |
3408 | } | |
6e10d2e4 | 3409 | atomic_inc(&cm_listens_created); |
3c2d774c GS |
3410 | } |
3411 | ||
3412 | cm_id->add_ref(cm_id); | |
3413 | cm_id->provider_data = (void *)cm_node; | |
3414 | ||
3415 | ||
3416 | return 0; | |
3417 | } | |
3418 | ||
3419 | ||
3420 | /** | |
3421 | * nes_destroy_listen | |
3422 | */ | |
3423 | int nes_destroy_listen(struct iw_cm_id *cm_id) | |
3424 | { | |
3425 | if (cm_id->provider_data) | |
3426 | g_cm_core->api->stop_listener(g_cm_core, cm_id->provider_data); | |
3427 | else | |
3428 | nes_debug(NES_DBG_CM, "cm_id->provider_data was NULL\n"); | |
3429 | ||
3430 | cm_id->rem_ref(cm_id); | |
3431 | ||
3432 | return 0; | |
3433 | } | |
3434 | ||
3435 | ||
3436 | /** | |
3437 | * nes_cm_recv | |
3438 | */ | |
3439 | int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice) | |
3440 | { | |
4a14f6a7 | 3441 | int rc = 0; |
615eb715 | 3442 | |
3c2d774c | 3443 | cm_packets_received++; |
615eb715 | 3444 | if ((g_cm_core) && (g_cm_core->api)) |
4a14f6a7 | 3445 | rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb); |
615eb715 | 3446 | else |
3c2d774c | 3447 | nes_debug(NES_DBG_CM, "Unable to process packet for CM," |
615eb715 | 3448 | " cm is not setup properly.\n"); |
3c2d774c | 3449 | |
4a14f6a7 | 3450 | return rc; |
3c2d774c GS |
3451 | } |
3452 | ||
3453 | ||
3454 | /** | |
3455 | * nes_cm_start | |
3456 | * Start and init a cm core module | |
3457 | */ | |
3458 | int nes_cm_start(void) | |
3459 | { | |
3460 | nes_debug(NES_DBG_CM, "\n"); | |
3461 | /* create the primary CM core, pass this handle to subsequent core inits */ | |
3462 | g_cm_core = nes_cm_alloc_core(); | |
615eb715 | 3463 | if (g_cm_core) |
3c2d774c | 3464 | return 0; |
615eb715 | 3465 | else |
3c2d774c | 3466 | return -ENOMEM; |
3c2d774c GS |
3467 | } |
3468 | ||
3469 | ||
3470 | /** | |
3471 | * nes_cm_stop | |
3472 | * stop and dealloc all cm core instances | |
3473 | */ | |
3474 | int nes_cm_stop(void) | |
3475 | { | |
3476 | g_cm_core->api->destroy_cm_core(g_cm_core); | |
3477 | return 0; | |
3478 | } | |
3479 | ||
3480 | ||
3481 | /** | |
3482 | * cm_event_connected | |
3483 | * handle a connected event, setup QPs and HW | |
3484 | */ | |
1a855fbf | 3485 | static void cm_event_connected(struct nes_cm_event *event) |
3c2d774c | 3486 | { |
3c2d774c GS |
3487 | struct nes_qp *nesqp; |
3488 | struct nes_vnic *nesvnic; | |
3489 | struct nes_device *nesdev; | |
3490 | struct nes_cm_node *cm_node; | |
3491 | struct nes_adapter *nesadapter; | |
3492 | struct ib_qp_attr attr; | |
3493 | struct iw_cm_id *cm_id; | |
3494 | struct iw_cm_event cm_event; | |
3c2d774c | 3495 | struct nes_v4_quad nes_quad; |
30da7cff | 3496 | u32 crc_value; |
3c2d774c GS |
3497 | int ret; |
3498 | ||
3499 | /* get all our handles */ | |
3500 | cm_node = event->cm_node; | |
3501 | cm_id = cm_node->cm_id; | |
3502 | nes_debug(NES_DBG_CM, "cm_event_connected - %p - cm_id = %p\n", cm_node, cm_id); | |
3503 | nesqp = (struct nes_qp *)cm_id->provider_data; | |
3504 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3505 | nesdev = nesvnic->nesdev; | |
3506 | nesadapter = nesdev->nesadapter; | |
3507 | ||
615eb715 | 3508 | if (nesqp->destroyed) |
3c2d774c | 3509 | return; |
3c2d774c GS |
3510 | atomic_inc(&cm_connecteds); |
3511 | nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" | |
615eb715 TN |
3512 | " local port 0x%04X. jiffies = %lu.\n", |
3513 | nesqp->hwqp.qp_id, | |
3514 | ntohl(cm_id->remote_addr.sin_addr.s_addr), | |
3515 | ntohs(cm_id->remote_addr.sin_port), | |
3516 | ntohs(cm_id->local_addr.sin_port), | |
3517 | jiffies); | |
3c2d774c GS |
3518 | |
3519 | nes_cm_init_tsa_conn(nesqp, cm_node); | |
3520 | ||
3521 | /* set the QP tsa context */ | |
6492cdf3 FL |
3522 | nesqp->nesqp_context->tcpPorts[0] = |
3523 | cpu_to_le16(ntohs(cm_id->local_addr.sin_port)); | |
3524 | nesqp->nesqp_context->tcpPorts[1] = | |
3525 | cpu_to_le16(ntohs(cm_id->remote_addr.sin_port)); | |
3526 | if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) | |
3527 | nesqp->nesqp_context->ip0 = | |
3528 | cpu_to_le32(ntohl(nesvnic->local_ipaddr)); | |
3529 | else | |
3530 | nesqp->nesqp_context->ip0 = | |
3531 | cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr)); | |
3c2d774c GS |
3532 | |
3533 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
6492cdf3 FL |
3534 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3535 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3536 | nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32( |
6492cdf3 FL |
3537 | nes_arp_table(nesdev, |
3538 | le32_to_cpu(nesqp->nesqp_context->ip0), | |
3c2d774c GS |
3539 | NULL, NES_ARP_RESOLVE) << 16); |
3540 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
3541 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); | |
3542 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3543 | nesqp->nesqp_context->ird_ord_sizes |= | |
6492cdf3 FL |
3544 | cpu_to_le32((u32)1 << |
3545 | NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT); | |
3c2d774c GS |
3546 | |
3547 | /* Adjust tail for not having a LSMM */ | |
615eb715 | 3548 | /*nesqp->hwqp.sq_tail = 1;*/ |
3c2d774c | 3549 | |
615eb715 | 3550 | build_rdma0_msg(cm_node, &nesqp); |
6492cdf3 | 3551 | |
615eb715 TN |
3552 | nes_write32(nesdev->regs + NES_WQE_ALLOC, |
3553 | (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); | |
3c2d774c GS |
3554 | |
3555 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
3556 | ||
6492cdf3 FL |
3557 | nes_quad.DstIpAdrIndex = |
3558 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
3559 | if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) | |
3560 | nes_quad.SrcIpadr = nesvnic->local_ipaddr; | |
3561 | else | |
3562 | nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr; | |
3c2d774c GS |
3563 | nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port; |
3564 | nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port; | |
3565 | ||
3566 | /* Produce hash key */ | |
30da7cff FL |
3567 | crc_value = get_crc_value(&nes_quad); |
3568 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3569 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, After CRC = 0x%08X\n", |
615eb715 | 3570 | nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask); |
3c2d774c GS |
3571 | |
3572 | nesqp->hte_index &= nesadapter->hte_index_mask; | |
3573 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3574 | ||
3575 | nesqp->ietf_frame = &cm_node->mpa_frame; | |
615eb715 | 3576 | nesqp->private_data_len = (u8)cm_node->mpa_frame_size; |
3c2d774c GS |
3577 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); |
3578 | ||
3c2d774c GS |
3579 | /* notify OF layer we successfully created the requested connection */ |
3580 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
d0c49bf3 | 3581 | cm_event.status = 0; |
3c2d774c GS |
3582 | cm_event.provider_data = cm_id->provider_data; |
3583 | cm_event.local_addr.sin_family = AF_INET; | |
3584 | cm_event.local_addr.sin_port = cm_id->local_addr.sin_port; | |
3585 | cm_event.remote_addr = cm_id->remote_addr; | |
3586 | ||
6492cdf3 | 3587 | cm_event.private_data = (void *)event->cm_node->mpa_frame_buf; |
615eb715 TN |
3588 | cm_event.private_data_len = (u8)event->cm_node->mpa_frame_size; |
3589 | cm_event.ird = cm_node->ird_size; | |
3590 | cm_event.ord = cm_node->ord_size; | |
3c2d774c GS |
3591 | |
3592 | cm_event.local_addr.sin_addr.s_addr = event->cm_info.rem_addr; | |
3593 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3594 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3595 | ||
3596 | if (ret) | |
6492cdf3 | 3597 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3598 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 FL |
3599 | attr.qp_state = IB_QPS_RTS; |
3600 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3601 | |
6492cdf3 | 3602 | nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = " |
615eb715 | 3603 | "%lu\n", nesqp->hwqp.qp_id, jiffies); |
3c2d774c GS |
3604 | |
3605 | return; | |
3606 | } | |
3607 | ||
3608 | ||
3609 | /** | |
3610 | * cm_event_connect_error | |
3611 | */ | |
1a855fbf | 3612 | static void cm_event_connect_error(struct nes_cm_event *event) |
3c2d774c GS |
3613 | { |
3614 | struct nes_qp *nesqp; | |
3615 | struct iw_cm_id *cm_id; | |
3616 | struct iw_cm_event cm_event; | |
3617 | /* struct nes_cm_info cm_info; */ | |
3618 | int ret; | |
3619 | ||
3620 | if (!event->cm_node) | |
3621 | return; | |
3622 | ||
3623 | cm_id = event->cm_node->cm_id; | |
615eb715 | 3624 | if (!cm_id) |
3c2d774c | 3625 | return; |
3c2d774c GS |
3626 | |
3627 | nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id); | |
3628 | nesqp = cm_id->provider_data; | |
3629 | ||
615eb715 | 3630 | if (!nesqp) |
3c2d774c | 3631 | return; |
3c2d774c GS |
3632 | |
3633 | /* notify OF layer about this connection error event */ | |
3634 | /* cm_id->rem_ref(cm_id); */ | |
3635 | nesqp->cm_id = NULL; | |
3636 | cm_id->provider_data = NULL; | |
3637 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
c5a7d489 | 3638 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3639 | cm_event.provider_data = cm_id->provider_data; |
3640 | cm_event.local_addr = cm_id->local_addr; | |
3641 | cm_event.remote_addr = cm_id->remote_addr; | |
3642 | cm_event.private_data = NULL; | |
3643 | cm_event.private_data_len = 0; | |
3644 | ||
6492cdf3 | 3645 | nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, " |
615eb715 TN |
3646 | "remove_addr=%08x\n", cm_event.local_addr.sin_addr.s_addr, |
3647 | cm_event.remote_addr.sin_addr.s_addr); | |
3c2d774c GS |
3648 | |
3649 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3650 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3651 | if (ret) | |
6492cdf3 | 3652 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3653 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 | 3654 | cm_id->rem_ref(cm_id); |
3c2d774c | 3655 | |
6492cdf3 | 3656 | rem_ref_cm_node(event->cm_node->cm_core, event->cm_node); |
3c2d774c GS |
3657 | return; |
3658 | } | |
3659 | ||
3660 | ||
3661 | /** | |
3662 | * cm_event_reset | |
3663 | */ | |
1a855fbf | 3664 | static void cm_event_reset(struct nes_cm_event *event) |
3c2d774c GS |
3665 | { |
3666 | struct nes_qp *nesqp; | |
3667 | struct iw_cm_id *cm_id; | |
3668 | struct iw_cm_event cm_event; | |
3669 | /* struct nes_cm_info cm_info; */ | |
3670 | int ret; | |
3671 | ||
3672 | if (!event->cm_node) | |
3673 | return; | |
3674 | ||
3675 | if (!event->cm_node->cm_id) | |
3676 | return; | |
3677 | ||
3678 | cm_id = event->cm_node->cm_id; | |
3679 | ||
3680 | nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id); | |
3681 | nesqp = cm_id->provider_data; | |
f9f3f1e0 FL |
3682 | if (!nesqp) |
3683 | return; | |
3c2d774c GS |
3684 | |
3685 | nesqp->cm_id = NULL; | |
3686 | /* cm_id->provider_data = NULL; */ | |
3687 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
d0c49bf3 | 3688 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3689 | cm_event.provider_data = cm_id->provider_data; |
3690 | cm_event.local_addr = cm_id->local_addr; | |
3691 | cm_event.remote_addr = cm_id->remote_addr; | |
3692 | cm_event.private_data = NULL; | |
3693 | cm_event.private_data_len = 0; | |
3694 | ||
183ecfa3 | 3695 | cm_id->add_ref(cm_id); |
f9f3f1e0 | 3696 | ret = cm_id->event_handler(cm_id, &cm_event); |
183ecfa3 FL |
3697 | atomic_inc(&cm_closes); |
3698 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 3699 | cm_event.status = 0; |
183ecfa3 FL |
3700 | cm_event.provider_data = cm_id->provider_data; |
3701 | cm_event.local_addr = cm_id->local_addr; | |
3702 | cm_event.remote_addr = cm_id->remote_addr; | |
3703 | cm_event.private_data = NULL; | |
3704 | cm_event.private_data_len = 0; | |
3705 | nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node); | |
3706 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3707 | ||
3c2d774c GS |
3708 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3709 | ||
3710 | ||
3711 | /* notify OF layer about this connection error event */ | |
3712 | cm_id->rem_ref(cm_id); | |
3713 | ||
3714 | return; | |
3715 | } | |
3716 | ||
3717 | ||
3718 | /** | |
3719 | * cm_event_mpa_req | |
3720 | */ | |
1a855fbf | 3721 | static void cm_event_mpa_req(struct nes_cm_event *event) |
3c2d774c | 3722 | { |
615eb715 | 3723 | struct iw_cm_id *cm_id; |
3c2d774c GS |
3724 | struct iw_cm_event cm_event; |
3725 | int ret; | |
3726 | struct nes_cm_node *cm_node; | |
3727 | ||
3728 | cm_node = event->cm_node; | |
3729 | if (!cm_node) | |
3730 | return; | |
3731 | cm_id = cm_node->cm_id; | |
3732 | ||
3733 | atomic_inc(&cm_connect_reqs); | |
3734 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 3735 | cm_node, cm_id, jiffies); |
3c2d774c GS |
3736 | |
3737 | cm_event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
d0c49bf3 | 3738 | cm_event.status = 0; |
3c2d774c GS |
3739 | cm_event.provider_data = (void *)cm_node; |
3740 | ||
3741 | cm_event.local_addr.sin_family = AF_INET; | |
3742 | cm_event.local_addr.sin_port = htons(event->cm_info.loc_port); | |
3743 | cm_event.local_addr.sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
3744 | ||
9d5ab133 FL |
3745 | cm_event.remote_addr.sin_family = AF_INET; |
3746 | cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port); | |
3747 | cm_event.remote_addr.sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
3748 | cm_event.private_data = cm_node->mpa_frame_buf; | |
615eb715 TN |
3749 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
3750 | cm_event.ird = cm_node->ird_size; | |
3751 | cm_event.ord = cm_node->ord_size; | |
9d5ab133 FL |
3752 | |
3753 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3754 | if (ret) | |
3755 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", | |
615eb715 | 3756 | __func__, __LINE__, ret); |
9d5ab133 FL |
3757 | return; |
3758 | } | |
3759 | ||
3760 | ||
3761 | static void cm_event_mpa_reject(struct nes_cm_event *event) | |
3762 | { | |
615eb715 | 3763 | struct iw_cm_id *cm_id; |
9d5ab133 FL |
3764 | struct iw_cm_event cm_event; |
3765 | struct nes_cm_node *cm_node; | |
3766 | int ret; | |
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 | ||
3781 | cm_event.local_addr.sin_family = AF_INET; | |
3782 | cm_event.local_addr.sin_port = htons(event->cm_info.loc_port); | |
3783 | cm_event.local_addr.sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
3784 | ||
3c2d774c GS |
3785 | cm_event.remote_addr.sin_family = AF_INET; |
3786 | cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port); | |
3787 | cm_event.remote_addr.sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
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 TN |
3793 | "remove_addr=%08x\n", |
3794 | cm_event.local_addr.sin_addr.s_addr, | |
3795 | cm_event.remote_addr.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 | } |