1c0dd49bdSEiji Ota /*
216e76cddSagiri * This file contains definitions imported from the OFED rds header rds.h.
316e76cddSagiri * Oracle elects to have and use the contents of rds.h under and
416e76cddSagiri * governed by the OpenIB.org BSD license.
5c0dd49bdSEiji Ota */
616e76cddSagiri
7c0dd49bdSEiji Ota /*
8c0dd49bdSEiji Ota * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
9c0dd49bdSEiji Ota */
10c0dd49bdSEiji Ota
11c0dd49bdSEiji Ota #ifndef _RDSV3_RDSV3_H
12c0dd49bdSEiji Ota #define _RDSV3_RDSV3_H
13c0dd49bdSEiji Ota
14c0dd49bdSEiji Ota /*
15c0dd49bdSEiji Ota * The name of this file is rds.h in ofed.
16c0dd49bdSEiji Ota */
17c0dd49bdSEiji Ota
18c0dd49bdSEiji Ota #ifdef __cplusplus
19c0dd49bdSEiji Ota extern "C" {
20c0dd49bdSEiji Ota #endif
21c0dd49bdSEiji Ota
22c0dd49bdSEiji Ota #include <sys/sunndi.h>
23c0dd49bdSEiji Ota #include <netinet/in.h>
24c0dd49bdSEiji Ota #include <sys/synch.h>
25c0dd49bdSEiji Ota #include <sys/stropts.h>
26c0dd49bdSEiji Ota #include <sys/socket.h>
27c0dd49bdSEiji Ota #include <sys/socketvar.h>
28c0dd49bdSEiji Ota #include <inet/ip.h>
29c0dd49bdSEiji Ota #include <sys/avl.h>
30c0dd49bdSEiji Ota #include <sys/param.h>
315d5562f5SEiji Ota #include <sys/time.h>
32c0dd49bdSEiji Ota #include <sys/rds.h>
33c0dd49bdSEiji Ota
34c0dd49bdSEiji Ota #include <sys/ib/ibtl/ibti.h>
35c0dd49bdSEiji Ota #include <sys/ib/clients/of/rdma/ib_verbs.h>
36c0dd49bdSEiji Ota #include <sys/ib/clients/of/rdma/ib_addr.h>
37c0dd49bdSEiji Ota #include <sys/ib/clients/of/rdma/rdma_cm.h>
38c0dd49bdSEiji Ota #include <sys/ib/clients/rdsv3/rdsv3_impl.h>
39c0dd49bdSEiji Ota #include <sys/ib/clients/rdsv3/info.h>
40c0dd49bdSEiji Ota
41*a530e0a9Sagiri #include <sys/cpuvar.h>
42*a530e0a9Sagiri #include <sys/disp.h>
43*a530e0a9Sagiri
44c0dd49bdSEiji Ota #define NIPQUAD(addr) \
45c0dd49bdSEiji Ota (unsigned char)((ntohl(addr) >> 24) & 0xFF), \
46c0dd49bdSEiji Ota (unsigned char)((ntohl(addr) >> 16) & 0xFF), \
47c0dd49bdSEiji Ota (unsigned char)((ntohl(addr) >> 8) & 0xFF), \
48c0dd49bdSEiji Ota (unsigned char)(ntohl(addr) & 0xFF)
49c0dd49bdSEiji Ota
50c0dd49bdSEiji Ota /*
51c0dd49bdSEiji Ota * RDS Network protocol version
52c0dd49bdSEiji Ota */
53c0dd49bdSEiji Ota #define RDS_PROTOCOL_3_0 0x0300
54c0dd49bdSEiji Ota #define RDS_PROTOCOL_3_1 0x0301
55c0dd49bdSEiji Ota #define RDS_PROTOCOL_VERSION RDS_PROTOCOL_3_1
56c0dd49bdSEiji Ota #define RDS_PROTOCOL_MAJOR(v) ((v) >> 8)
57c0dd49bdSEiji Ota #define RDS_PROTOCOL_MINOR(v) ((v) & 255)
58c0dd49bdSEiji Ota #define RDS_PROTOCOL(maj, min) (((maj) << 8) | min)
59c0dd49bdSEiji Ota
60c0dd49bdSEiji Ota /*
61c0dd49bdSEiji Ota * XXX randomly chosen, but at least seems to be unused:
62c0dd49bdSEiji Ota * # 18464-18768 Unassigned
63c0dd49bdSEiji Ota * We should do better. We want a reserved port to discourage unpriv'ed
64c0dd49bdSEiji Ota * userspace from listening.
65c0dd49bdSEiji Ota *
66c0dd49bdSEiji Ota * port 18633 was the version that had ack frames on the wire.
67c0dd49bdSEiji Ota */
68c0dd49bdSEiji Ota #define RDSV3_PORT 18634
69c0dd49bdSEiji Ota
705d5562f5SEiji Ota #define RDSV3_REAPER_WAIT_SECS (5*60)
715d5562f5SEiji Ota #define RDSV3_REAPER_WAIT_JIFFIES SEC_TO_TICK(RDSV3_REAPER_WAIT_SECS)
725d5562f5SEiji Ota
73c0dd49bdSEiji Ota static inline ulong_t
ceil(ulong_t x,ulong_t y)74c0dd49bdSEiji Ota ceil(ulong_t x, ulong_t y)
75c0dd49bdSEiji Ota {
76c0dd49bdSEiji Ota return ((x + y - 1) / y);
77c0dd49bdSEiji Ota }
78c0dd49bdSEiji Ota
79c0dd49bdSEiji Ota #define RDSV3_FRAG_SHIFT 12
80c0dd49bdSEiji Ota #define RDSV3_FRAG_SIZE ((unsigned int)(1 << RDSV3_FRAG_SHIFT))
81c0dd49bdSEiji Ota
82c0dd49bdSEiji Ota #define RDSV3_CONG_MAP_BYTES (65536 / 8)
83c0dd49bdSEiji Ota #define RDSV3_CONG_MAP_LONGS (RDSV3_CONG_MAP_BYTES / sizeof (unsigned long))
84c0dd49bdSEiji Ota #define RDSV3_CONG_MAP_PAGES (RDSV3_CONG_MAP_BYTES / PAGE_SIZE)
85c0dd49bdSEiji Ota #define RDSV3_CONG_MAP_PAGE_BITS (PAGE_SIZE * 8)
86c0dd49bdSEiji Ota
87c0dd49bdSEiji Ota struct rdsv3_cong_map {
88c0dd49bdSEiji Ota struct avl_node m_rb_node;
89c0dd49bdSEiji Ota uint32_be_t m_addr;
90c0dd49bdSEiji Ota rdsv3_wait_queue_t m_waitq;
91c0dd49bdSEiji Ota struct list m_conn_list;
92c0dd49bdSEiji Ota unsigned long m_page_addrs[RDSV3_CONG_MAP_PAGES];
93c0dd49bdSEiji Ota };
94c0dd49bdSEiji Ota
95c0dd49bdSEiji Ota /*
96c0dd49bdSEiji Ota * This is how we will track the connection state:
97c0dd49bdSEiji Ota * A connection is always in one of the following
98c0dd49bdSEiji Ota * states. Updates to the state are atomic and imply
99c0dd49bdSEiji Ota * a memory barrier.
100c0dd49bdSEiji Ota */
101c0dd49bdSEiji Ota enum {
102c0dd49bdSEiji Ota RDSV3_CONN_DOWN = 0,
103c0dd49bdSEiji Ota RDSV3_CONN_CONNECTING,
104c0dd49bdSEiji Ota RDSV3_CONN_DISCONNECTING,
105c0dd49bdSEiji Ota RDSV3_CONN_UP,
106c0dd49bdSEiji Ota RDSV3_CONN_ERROR,
107c0dd49bdSEiji Ota };
108c0dd49bdSEiji Ota
109c0dd49bdSEiji Ota /* Bits for c_flags */
110c0dd49bdSEiji Ota #define RDSV3_LL_SEND_FULL 0
111c0dd49bdSEiji Ota #define RDSV3_RECONNECT_PENDING 1
112c0dd49bdSEiji Ota
113c0dd49bdSEiji Ota struct rdsv3_connection {
114c0dd49bdSEiji Ota struct avl_node c_hash_node;
11580166370Sagiri struct rdsv3_ip_bucket *c_bucketp;
116c0dd49bdSEiji Ota uint32_be_t c_laddr;
117c0dd49bdSEiji Ota uint32_be_t c_faddr;
118c0dd49bdSEiji Ota unsigned int c_loopback:1;
119c0dd49bdSEiji Ota struct rdsv3_connection *c_passive;
120c0dd49bdSEiji Ota
121c0dd49bdSEiji Ota struct rdsv3_cong_map *c_lcong;
122c0dd49bdSEiji Ota struct rdsv3_cong_map *c_fcong;
123c0dd49bdSEiji Ota
124c0dd49bdSEiji Ota struct mutex c_send_lock; /* protect send ring */
1255d5562f5SEiji Ota atomic_t c_send_generation;
1265d5562f5SEiji Ota atomic_t c_senders;
1275d5562f5SEiji Ota
128c0dd49bdSEiji Ota struct rdsv3_message *c_xmit_rm;
129c0dd49bdSEiji Ota unsigned long c_xmit_sg;
130c0dd49bdSEiji Ota unsigned int c_xmit_hdr_off;
131c0dd49bdSEiji Ota unsigned int c_xmit_data_off;
132c0dd49bdSEiji Ota unsigned int c_xmit_rdma_sent;
133c0dd49bdSEiji Ota
134c0dd49bdSEiji Ota kmutex_t c_lock; /* protect msg queues */
135c0dd49bdSEiji Ota uint64_t c_next_tx_seq;
136c0dd49bdSEiji Ota struct list c_send_queue;
137c0dd49bdSEiji Ota struct list c_retrans;
138c0dd49bdSEiji Ota
139c0dd49bdSEiji Ota uint64_t c_next_rx_seq;
140c0dd49bdSEiji Ota
141c0dd49bdSEiji Ota struct rdsv3_transport *c_trans;
142c0dd49bdSEiji Ota void *c_transport_data;
143c0dd49bdSEiji Ota
144c0dd49bdSEiji Ota atomic_t c_state;
145c0dd49bdSEiji Ota unsigned long c_flags;
146c0dd49bdSEiji Ota unsigned long c_reconnect_jiffies;
1475d5562f5SEiji Ota clock_t c_last_connect_jiffies;
1485d5562f5SEiji Ota
149c0dd49bdSEiji Ota struct rdsv3_delayed_work_s c_send_w;
150c0dd49bdSEiji Ota struct rdsv3_delayed_work_s c_recv_w;
151c0dd49bdSEiji Ota struct rdsv3_delayed_work_s c_conn_w;
1525d5562f5SEiji Ota struct rdsv3_delayed_work_s c_reap_w;
153c0dd49bdSEiji Ota struct rdsv3_work_s c_down_w;
154c0dd49bdSEiji Ota struct mutex c_cm_lock; /* protect conn state & cm */
155c0dd49bdSEiji Ota
156c0dd49bdSEiji Ota struct list_node c_map_item;
157c0dd49bdSEiji Ota unsigned long c_map_queued;
158c0dd49bdSEiji Ota unsigned long c_map_offset;
159c0dd49bdSEiji Ota unsigned long c_map_bytes;
160c0dd49bdSEiji Ota
161c0dd49bdSEiji Ota unsigned int c_unacked_packets;
162c0dd49bdSEiji Ota unsigned int c_unacked_bytes;
163c0dd49bdSEiji Ota
164c0dd49bdSEiji Ota /* Protocol version */
165c0dd49bdSEiji Ota unsigned int c_version;
166c0dd49bdSEiji Ota };
167c0dd49bdSEiji Ota
168c0dd49bdSEiji Ota #define RDSV3_FLAG_CONG_BITMAP 0x01
169c0dd49bdSEiji Ota #define RDSV3_FLAG_ACK_REQUIRED 0x02
170c0dd49bdSEiji Ota #define RDSV3_FLAG_RETRANSMITTED 0x04
171cadbfdc3SEiji Ota #define RDSV3_MAX_ADV_CREDIT 127
172c0dd49bdSEiji Ota
173c0dd49bdSEiji Ota /*
174c0dd49bdSEiji Ota * Maximum space available for extension headers.
175c0dd49bdSEiji Ota */
176c0dd49bdSEiji Ota #define RDSV3_HEADER_EXT_SPACE 16
177c0dd49bdSEiji Ota
178c0dd49bdSEiji Ota struct rdsv3_header {
179c0dd49bdSEiji Ota uint64_be_t h_sequence;
180c0dd49bdSEiji Ota uint64_be_t h_ack;
181c0dd49bdSEiji Ota uint32_be_t h_len;
182c0dd49bdSEiji Ota uint16_be_t h_sport;
183c0dd49bdSEiji Ota uint16_be_t h_dport;
184c0dd49bdSEiji Ota uint8_t h_flags;
185c0dd49bdSEiji Ota uint8_t h_credit;
186c0dd49bdSEiji Ota uint8_t h_padding[4];
187c0dd49bdSEiji Ota uint16_be_t h_csum;
188c0dd49bdSEiji Ota
189c0dd49bdSEiji Ota uint8_t h_exthdr[RDSV3_HEADER_EXT_SPACE];
190c0dd49bdSEiji Ota };
191c0dd49bdSEiji Ota
192c0dd49bdSEiji Ota /* Reserved - indicates end of extensions */
193c0dd49bdSEiji Ota #define RDSV3_EXTHDR_NONE 0
194c0dd49bdSEiji Ota
195c0dd49bdSEiji Ota /*
196c0dd49bdSEiji Ota * This extension header is included in the very
197c0dd49bdSEiji Ota * first message that is sent on a new connection,
198c0dd49bdSEiji Ota * and identifies the protocol level. This will help
199c0dd49bdSEiji Ota * rolling updates if a future change requires breaking
200c0dd49bdSEiji Ota * the protocol.
201c0dd49bdSEiji Ota */
202c0dd49bdSEiji Ota #define RDSV3_EXTHDR_VERSION 1
203c0dd49bdSEiji Ota struct rdsv3_ext_header_version {
204c0dd49bdSEiji Ota uint32_be_t h_version;
205c0dd49bdSEiji Ota };
206c0dd49bdSEiji Ota
207c0dd49bdSEiji Ota /*
208c0dd49bdSEiji Ota * This extension header is included in the RDS message
209c0dd49bdSEiji Ota * chasing an RDMA operation.
210c0dd49bdSEiji Ota */
211c0dd49bdSEiji Ota #define RDSV3_EXTHDR_RDMA 2
212c0dd49bdSEiji Ota struct rdsv3_ext_header_rdma {
213c0dd49bdSEiji Ota uint32_be_t h_rdma_rkey;
214c0dd49bdSEiji Ota };
215c0dd49bdSEiji Ota
216c0dd49bdSEiji Ota /*
217c0dd49bdSEiji Ota * This extension header tells the peer about the
218c0dd49bdSEiji Ota * destination <R_Key,offset> of the requested RDMA
219c0dd49bdSEiji Ota * operation.
220c0dd49bdSEiji Ota */
221c0dd49bdSEiji Ota #define RDSV3_EXTHDR_RDMA_DEST 3
222c0dd49bdSEiji Ota struct rdsv3_ext_header_rdma_dest {
223c0dd49bdSEiji Ota uint32_be_t h_rdma_rkey;
224c0dd49bdSEiji Ota uint32_be_t h_rdma_offset;
225c0dd49bdSEiji Ota };
226c0dd49bdSEiji Ota
227c0dd49bdSEiji Ota #define __RDSV3_EXTHDR_MAX 16 /* for now */
228c0dd49bdSEiji Ota
229c0dd49bdSEiji Ota struct rdsv3_incoming {
230c0dd49bdSEiji Ota atomic_t i_refcount;
231c0dd49bdSEiji Ota struct list_node i_item;
232c0dd49bdSEiji Ota struct rdsv3_connection *i_conn;
233c0dd49bdSEiji Ota struct rdsv3_header i_hdr;
234c0dd49bdSEiji Ota unsigned long i_rx_jiffies;
235c0dd49bdSEiji Ota uint32_be_t i_saddr;
236c0dd49bdSEiji Ota
237fe817b60SEiji Ota rds_rdma_cookie_t i_rdma_cookie;
238c0dd49bdSEiji Ota };
239c0dd49bdSEiji Ota
240c0dd49bdSEiji Ota /*
241c0dd49bdSEiji Ota * m_sock_item and m_conn_item are on lists that are serialized under
242c0dd49bdSEiji Ota * conn->c_lock. m_sock_item has additional meaning in that once it is empty
243c0dd49bdSEiji Ota * the message will not be put back on the retransmit list after being sent.
244c0dd49bdSEiji Ota * messages that are canceled while being sent rely on this.
245c0dd49bdSEiji Ota *
246c0dd49bdSEiji Ota * m_inc is used by loopback so that it can pass an incoming message straight
247c0dd49bdSEiji Ota * back up into the rx path. It embeds a wire header which is also used by
248c0dd49bdSEiji Ota * the send path, which is kind of awkward.
249c0dd49bdSEiji Ota *
250c0dd49bdSEiji Ota * m_sock_item indicates the message's presence on a socket's send or receive
251c0dd49bdSEiji Ota * queue. m_rs will point to that socket.
252c0dd49bdSEiji Ota *
253c0dd49bdSEiji Ota * m_daddr is used by cancellation to prune messages to a given destination.
254c0dd49bdSEiji Ota *
255c0dd49bdSEiji Ota * The RDS_MSG_ON_SOCK and RDS_MSG_ON_CONN flags are used to avoid lock
256c0dd49bdSEiji Ota * nesting. As paths iterate over messages on a sock, or conn, they must
257c0dd49bdSEiji Ota * also lock the conn, or sock, to remove the message from those lists too.
258c0dd49bdSEiji Ota * Testing the flag to determine if the message is still on the lists lets
259c0dd49bdSEiji Ota * us avoid testing the list_head directly. That means each path can use
260c0dd49bdSEiji Ota * the message's list_head to keep it on a local list while juggling locks
261c0dd49bdSEiji Ota * without confusing the other path.
262c0dd49bdSEiji Ota *
263c0dd49bdSEiji Ota * m_ack_seq is an optional field set by transports who need a different
264c0dd49bdSEiji Ota * sequence number range to invalidate. They can use this in a callback
265c0dd49bdSEiji Ota * that they pass to rdsv3_send_drop_acked() to see if each message has been
266c0dd49bdSEiji Ota * acked. The HAS_ACK_SEQ flag can be used to detect messages which haven't
267c0dd49bdSEiji Ota * had ack_seq set yet.
268c0dd49bdSEiji Ota */
269c0dd49bdSEiji Ota #define RDSV3_MSG_ON_SOCK 1
270c0dd49bdSEiji Ota #define RDSV3_MSG_ON_CONN 2
271c0dd49bdSEiji Ota #define RDSV3_MSG_HAS_ACK_SEQ 3
272c0dd49bdSEiji Ota #define RDSV3_MSG_ACK_REQUIRED 4
273c0dd49bdSEiji Ota #define RDSV3_MSG_RETRANSMITTED 5
274c0dd49bdSEiji Ota #define RDSV3_MSG_MAPPED 6
275c0dd49bdSEiji Ota #define RDSV3_MSG_PAGEVEC 7
276c0dd49bdSEiji Ota
277c0dd49bdSEiji Ota struct rdsv3_message {
278c0dd49bdSEiji Ota atomic_t m_refcount;
279c0dd49bdSEiji Ota struct list_node m_sock_item;
280c0dd49bdSEiji Ota struct list_node m_conn_item;
281c0dd49bdSEiji Ota struct rdsv3_incoming m_inc;
282c0dd49bdSEiji Ota uint64_t m_ack_seq;
283c0dd49bdSEiji Ota uint32_be_t m_daddr;
284c0dd49bdSEiji Ota unsigned long m_flags;
285c0dd49bdSEiji Ota
286c0dd49bdSEiji Ota /*
287c0dd49bdSEiji Ota * Never access m_rs without holding m_rs_lock.
288c0dd49bdSEiji Ota * Lock nesting is
289c0dd49bdSEiji Ota * rm->m_rs_lock
290c0dd49bdSEiji Ota * -> rs->rs_lock
291c0dd49bdSEiji Ota */
292c0dd49bdSEiji Ota kmutex_t m_rs_lock;
2935d5562f5SEiji Ota rdsv3_wait_queue_t m_flush_wait;
2945d5562f5SEiji Ota
295c0dd49bdSEiji Ota struct rdsv3_sock *m_rs;
296c0dd49bdSEiji Ota struct rdsv3_rdma_op *m_rdma_op;
297fe817b60SEiji Ota rds_rdma_cookie_t m_rdma_cookie;
298c0dd49bdSEiji Ota struct rdsv3_mr *m_rdma_mr;
299c0dd49bdSEiji Ota unsigned int m_nents;
300c0dd49bdSEiji Ota unsigned int m_count;
301c0dd49bdSEiji Ota struct rdsv3_scatterlist m_sg[1];
302c0dd49bdSEiji Ota };
303c0dd49bdSEiji Ota
304c0dd49bdSEiji Ota /*
305c0dd49bdSEiji Ota * The RDS notifier is used (optionally) to tell the application about
306c0dd49bdSEiji Ota * completed RDMA operations. Rather than keeping the whole rds message
307c0dd49bdSEiji Ota * around on the queue, we allocate a small notifier that is put on the
308c0dd49bdSEiji Ota * socket's notifier_list. Notifications are delivered to the application
309c0dd49bdSEiji Ota * through control messages.
310c0dd49bdSEiji Ota */
311c0dd49bdSEiji Ota struct rdsv3_notifier {
312c0dd49bdSEiji Ota list_node_t n_list;
313c0dd49bdSEiji Ota uint64_t n_user_token;
314c0dd49bdSEiji Ota int n_status;
315c0dd49bdSEiji Ota };
316c0dd49bdSEiji Ota
317c0dd49bdSEiji Ota /*
318c0dd49bdSEiji Ota * struct rdsv3_transport - transport specific behavioural hooks
319c0dd49bdSEiji Ota *
320c0dd49bdSEiji Ota * @xmit: .xmit is called by rdsv3_send_xmit() to tell the transport to send
321c0dd49bdSEiji Ota * part of a message. The caller serializes on the send_sem so this
322c0dd49bdSEiji Ota * doesn't need to be reentrant for a given conn. The header must be
323c0dd49bdSEiji Ota * sent before the data payload. .xmit must be prepared to send a
324c0dd49bdSEiji Ota * message with no data payload. .xmit should return the number of
325c0dd49bdSEiji Ota * bytes that were sent down the connection, including header bytes.
326c0dd49bdSEiji Ota * Returning 0 tells the caller that it doesn't need to perform any
327c0dd49bdSEiji Ota * additional work now. This is usually the case when the transport has
328c0dd49bdSEiji Ota * filled the sending queue for its connection and will handle
329c0dd49bdSEiji Ota * triggering the rds thread to continue the send when space becomes
330c0dd49bdSEiji Ota * available. Returning -EAGAIN tells the caller to retry the send
331c0dd49bdSEiji Ota * immediately. Returning -ENOMEM tells the caller to retry the send at
332c0dd49bdSEiji Ota * some point in the future.
333c0dd49bdSEiji Ota *
334c0dd49bdSEiji Ota * @conn_shutdown: conn_shutdown stops traffic on the given connection. Once
335c0dd49bdSEiji Ota * it returns the connection can not call rdsv3_recv_incoming().
336c0dd49bdSEiji Ota * This will only be called once after conn_connect returns
337c0dd49bdSEiji Ota * non-zero success and will The caller serializes this with
338c0dd49bdSEiji Ota * the send and connecting paths (xmit_* and conn_*). The
339c0dd49bdSEiji Ota * transport is responsible for other serialization, including
340c0dd49bdSEiji Ota * rdsv3_recv_incoming(). This is called in process context but
341c0dd49bdSEiji Ota * should try hard not to block.
342c0dd49bdSEiji Ota *
343c0dd49bdSEiji Ota * @xmit_cong_map: This asks the transport to send the local bitmap down the
344c0dd49bdSEiji Ota * given connection. XXX get a better story about the bitmap
345c0dd49bdSEiji Ota * flag and header.
346c0dd49bdSEiji Ota */
347c0dd49bdSEiji Ota
348cadbfdc3SEiji Ota #define RDS_TRANS_IB 0
349cadbfdc3SEiji Ota #define RDS_TRANS_IWARP 1
350cadbfdc3SEiji Ota #define RDS_TRANS_TCP 2
351cadbfdc3SEiji Ota #define RDS_TRANS_COUNT 3
352cadbfdc3SEiji Ota
353c0dd49bdSEiji Ota struct rdsv3_transport {
354cadbfdc3SEiji Ota char t_name[TRANSNAMSIZ];
355c0dd49bdSEiji Ota struct list_node t_item;
356cadbfdc3SEiji Ota unsigned int t_type;
357c0dd49bdSEiji Ota unsigned int t_prefer_loopback:1;
358c0dd49bdSEiji Ota
359c0dd49bdSEiji Ota int (*laddr_check)(uint32_be_t addr);
360c0dd49bdSEiji Ota int (*conn_alloc)(struct rdsv3_connection *conn, int gfp);
361c0dd49bdSEiji Ota void (*conn_free)(void *data);
362c0dd49bdSEiji Ota int (*conn_connect)(struct rdsv3_connection *conn);
363c0dd49bdSEiji Ota void (*conn_shutdown)(struct rdsv3_connection *conn);
364c0dd49bdSEiji Ota void (*xmit_prepare)(struct rdsv3_connection *conn);
365c0dd49bdSEiji Ota void (*xmit_complete)(struct rdsv3_connection *conn);
366c0dd49bdSEiji Ota int (*xmit)(struct rdsv3_connection *conn, struct rdsv3_message *rm,
367c0dd49bdSEiji Ota unsigned int hdr_off, unsigned int sg, unsigned int off);
368c0dd49bdSEiji Ota int (*xmit_cong_map)(struct rdsv3_connection *conn,
369c0dd49bdSEiji Ota struct rdsv3_cong_map *map, unsigned long offset);
370c0dd49bdSEiji Ota int (*xmit_rdma)(struct rdsv3_connection *conn,
371c0dd49bdSEiji Ota struct rdsv3_rdma_op *op);
372c0dd49bdSEiji Ota int (*recv)(struct rdsv3_connection *conn);
373c0dd49bdSEiji Ota int (*inc_copy_to_user)(struct rdsv3_incoming *inc, uio_t *uio,
374c0dd49bdSEiji Ota size_t size);
375c0dd49bdSEiji Ota void (*inc_free)(struct rdsv3_incoming *inc);
376c0dd49bdSEiji Ota
377c0dd49bdSEiji Ota int (*cm_handle_connect)(struct rdma_cm_id *cm_id,
378c0dd49bdSEiji Ota struct rdma_cm_event *event);
379c0dd49bdSEiji Ota int (*cm_initiate_connect)(struct rdma_cm_id *cm_id);
380c0dd49bdSEiji Ota void (*cm_connect_complete)(struct rdsv3_connection *conn,
381c0dd49bdSEiji Ota struct rdma_cm_event *event);
382c0dd49bdSEiji Ota
383c0dd49bdSEiji Ota unsigned int (*stats_info_copy)(struct rdsv3_info_iterator *iter,
384c0dd49bdSEiji Ota unsigned int avail);
385c0dd49bdSEiji Ota void (*exit)(void);
386fe817b60SEiji Ota void *(*get_mr)(struct rds_iovec *sg, unsigned long nr_sg,
387c0dd49bdSEiji Ota struct rdsv3_sock *rs, uint32_t *key_ret);
388c0dd49bdSEiji Ota void (*sync_mr)(void *trans_private, int direction);
389c0dd49bdSEiji Ota void (*free_mr)(void *trans_private, int invalidate);
390c0dd49bdSEiji Ota void (*flush_mrs)(void);
391c0dd49bdSEiji Ota };
392c0dd49bdSEiji Ota
393c0dd49bdSEiji Ota struct rdsv3_sock {
394c0dd49bdSEiji Ota struct rsock *rs_sk;
395c0dd49bdSEiji Ota uint64_t rs_user_addr;
396c0dd49bdSEiji Ota uint64_t rs_user_bytes;
397c0dd49bdSEiji Ota
398c0dd49bdSEiji Ota /*
399c0dd49bdSEiji Ota * bound_addr used for both incoming and outgoing, no INADDR_ANY
400c0dd49bdSEiji Ota * support.
401c0dd49bdSEiji Ota */
402c0dd49bdSEiji Ota struct avl_node rs_bound_node;
403c0dd49bdSEiji Ota uint32_be_t rs_bound_addr;
404c0dd49bdSEiji Ota uint32_be_t rs_conn_addr;
405c0dd49bdSEiji Ota uint16_be_t rs_bound_port;
406c0dd49bdSEiji Ota uint16_be_t rs_conn_port;
407c0dd49bdSEiji Ota
408c0dd49bdSEiji Ota /*
409c0dd49bdSEiji Ota * This is only used to communicate the transport between bind and
410c0dd49bdSEiji Ota * initiating connections. All other trans use is referenced through
411c0dd49bdSEiji Ota * the connection.
412c0dd49bdSEiji Ota */
413c0dd49bdSEiji Ota struct rdsv3_transport *rs_transport;
414c0dd49bdSEiji Ota
415c0dd49bdSEiji Ota /*
416c0dd49bdSEiji Ota * rdsv3_sendmsg caches the conn it used the last time around.
417c0dd49bdSEiji Ota * This helps avoid costly lookups.
418c0dd49bdSEiji Ota */
419c0dd49bdSEiji Ota struct rdsv3_connection *rs_conn;
420c0dd49bdSEiji Ota kmutex_t rs_conn_lock;
421c0dd49bdSEiji Ota
422c0dd49bdSEiji Ota /* flag indicating we were congested or not */
423c0dd49bdSEiji Ota int rs_congested;
424cadbfdc3SEiji Ota /* seen congestion (ENOBUFS) when sending? */
425cadbfdc3SEiji Ota int rs_seen_congestion;
4265d5562f5SEiji Ota kmutex_t rs_congested_lock;
4275d5562f5SEiji Ota kcondvar_t rs_congested_cv;
428c0dd49bdSEiji Ota
429c0dd49bdSEiji Ota /* rs_lock protects all these adjacent members before the newline */
430c0dd49bdSEiji Ota kmutex_t rs_lock;
431c0dd49bdSEiji Ota struct list rs_send_queue;
432c0dd49bdSEiji Ota uint32_t rs_snd_bytes;
433c0dd49bdSEiji Ota int rs_rcv_bytes;
434c0dd49bdSEiji Ota /* currently used for failed RDMAs */
435c0dd49bdSEiji Ota struct list rs_notify_queue;
436c0dd49bdSEiji Ota
437c0dd49bdSEiji Ota /*
438c0dd49bdSEiji Ota * Congestion wake_up. If rs_cong_monitor is set, we use cong_mask
439c0dd49bdSEiji Ota * to decide whether the application should be woken up.
440c0dd49bdSEiji Ota * If not set, we use rs_cong_track to find out whether a cong map
441c0dd49bdSEiji Ota * update arrived.
442c0dd49bdSEiji Ota */
443c0dd49bdSEiji Ota uint64_t rs_cong_mask;
444c0dd49bdSEiji Ota uint64_t rs_cong_notify;
445c0dd49bdSEiji Ota struct list_node rs_cong_list;
446c0dd49bdSEiji Ota unsigned long rs_cong_track;
447c0dd49bdSEiji Ota
448c0dd49bdSEiji Ota /*
449c0dd49bdSEiji Ota * rs_recv_lock protects the receive queue, and is
450c0dd49bdSEiji Ota * used to serialize with rdsv3_release.
451c0dd49bdSEiji Ota */
452c0dd49bdSEiji Ota krwlock_t rs_recv_lock;
453c0dd49bdSEiji Ota struct list rs_recv_queue;
454c0dd49bdSEiji Ota
455c0dd49bdSEiji Ota /* just for stats reporting */
456c0dd49bdSEiji Ota struct list_node rs_item;
457c0dd49bdSEiji Ota
458c0dd49bdSEiji Ota /* these have their own lock */
459c0dd49bdSEiji Ota kmutex_t rs_rdma_lock;
460c0dd49bdSEiji Ota struct avl_tree rs_rdma_keys;
461c0dd49bdSEiji Ota
462c0dd49bdSEiji Ota /* Socket options - in case there will be more */
463c0dd49bdSEiji Ota unsigned char rs_recverr,
464c0dd49bdSEiji Ota rs_cong_monitor;
465c0dd49bdSEiji Ota
466c0dd49bdSEiji Ota cred_t *rs_cred;
467c0dd49bdSEiji Ota zoneid_t rs_zoneid;
468c0dd49bdSEiji Ota };
469c0dd49bdSEiji Ota
4701a561c76SEiji Ota static inline struct rdsv3_sock *
rdsv3_sk_to_rs(const struct rsock * sk)471c0dd49bdSEiji Ota rdsv3_sk_to_rs(const struct rsock *sk)
472c0dd49bdSEiji Ota {
473c0dd49bdSEiji Ota return ((struct rdsv3_sock *)sk->sk_protinfo);
474c0dd49bdSEiji Ota }
475c0dd49bdSEiji Ota
4761a561c76SEiji Ota static inline struct rsock *
rdsv3_rs_to_sk(const struct rdsv3_sock * rs)477c0dd49bdSEiji Ota rdsv3_rs_to_sk(const struct rdsv3_sock *rs)
478c0dd49bdSEiji Ota {
479c0dd49bdSEiji Ota return ((struct rsock *)rs->rs_sk);
480c0dd49bdSEiji Ota }
481c0dd49bdSEiji Ota
482c0dd49bdSEiji Ota /*
483c0dd49bdSEiji Ota * The stack assigns sk_sndbuf and sk_rcvbuf to twice the specified value
484c0dd49bdSEiji Ota * to account for overhead. We don't account for overhead, we just apply
485c0dd49bdSEiji Ota * the number of payload bytes to the specified value.
486c0dd49bdSEiji Ota */
4871a561c76SEiji Ota static inline int
rdsv3_sk_sndbuf(struct rdsv3_sock * rs)488c0dd49bdSEiji Ota rdsv3_sk_sndbuf(struct rdsv3_sock *rs)
489c0dd49bdSEiji Ota {
490c0dd49bdSEiji Ota /* XXX */
491c0dd49bdSEiji Ota return (rdsv3_rs_to_sk(rs)->sk_sndbuf);
492c0dd49bdSEiji Ota }
493c0dd49bdSEiji Ota
4941a561c76SEiji Ota static inline int
rdsv3_sk_rcvbuf(struct rdsv3_sock * rs)495c0dd49bdSEiji Ota rdsv3_sk_rcvbuf(struct rdsv3_sock *rs)
496c0dd49bdSEiji Ota {
497c0dd49bdSEiji Ota /* XXX */
498c0dd49bdSEiji Ota return (rdsv3_rs_to_sk(rs)->sk_rcvbuf);
499c0dd49bdSEiji Ota }
500c0dd49bdSEiji Ota
501c0dd49bdSEiji Ota struct rdsv3_statistics {
502c0dd49bdSEiji Ota uint64_t s_conn_reset;
503c0dd49bdSEiji Ota uint64_t s_recv_drop_bad_checksum;
504c0dd49bdSEiji Ota uint64_t s_recv_drop_old_seq;
505c0dd49bdSEiji Ota uint64_t s_recv_drop_no_sock;
506c0dd49bdSEiji Ota uint64_t s_recv_drop_dead_sock;
507c0dd49bdSEiji Ota uint64_t s_recv_deliver_raced;
508c0dd49bdSEiji Ota uint64_t s_recv_delivered;
509c0dd49bdSEiji Ota uint64_t s_recv_queued;
510c0dd49bdSEiji Ota uint64_t s_recv_immediate_retry;
511c0dd49bdSEiji Ota uint64_t s_recv_delayed_retry;
512c0dd49bdSEiji Ota uint64_t s_recv_ack_required;
513c0dd49bdSEiji Ota uint64_t s_recv_rdma_bytes;
514c0dd49bdSEiji Ota uint64_t s_recv_ping;
515c0dd49bdSEiji Ota uint64_t s_send_queue_empty;
516c0dd49bdSEiji Ota uint64_t s_send_queue_full;
517c0dd49bdSEiji Ota uint64_t s_send_sem_contention;
518c0dd49bdSEiji Ota uint64_t s_send_sem_queue_raced;
519c0dd49bdSEiji Ota uint64_t s_send_immediate_retry;
520c0dd49bdSEiji Ota uint64_t s_send_delayed_retry;
521c0dd49bdSEiji Ota uint64_t s_send_drop_acked;
522c0dd49bdSEiji Ota uint64_t s_send_ack_required;
523c0dd49bdSEiji Ota uint64_t s_send_queued;
524c0dd49bdSEiji Ota uint64_t s_send_rdma;
525c0dd49bdSEiji Ota uint64_t s_send_rdma_bytes;
526c0dd49bdSEiji Ota uint64_t s_send_pong;
527c0dd49bdSEiji Ota uint64_t s_page_remainder_hit;
528c0dd49bdSEiji Ota uint64_t s_page_remainder_miss;
529c0dd49bdSEiji Ota uint64_t s_copy_to_user;
530c0dd49bdSEiji Ota uint64_t s_copy_from_user;
531c0dd49bdSEiji Ota uint64_t s_cong_update_queued;
532c0dd49bdSEiji Ota uint64_t s_cong_update_received;
533c0dd49bdSEiji Ota uint64_t s_cong_send_error;
534c0dd49bdSEiji Ota uint64_t s_cong_send_blocked;
535c0dd49bdSEiji Ota };
536c0dd49bdSEiji Ota
537c0dd49bdSEiji Ota /* af_rds.c */
538c0dd49bdSEiji Ota void rdsv3_sock_addref(struct rdsv3_sock *rs);
539c0dd49bdSEiji Ota void rdsv3_sock_put(struct rdsv3_sock *rs);
540c0dd49bdSEiji Ota void rdsv3_wake_sk_sleep(struct rdsv3_sock *rs);
541c0dd49bdSEiji Ota void __rdsv3_wake_sk_sleep(struct rsock *sk);
542c0dd49bdSEiji Ota
543c0dd49bdSEiji Ota /* bind.c */
544c0dd49bdSEiji Ota int rdsv3_bind(sock_lower_handle_t proto_handle, struct sockaddr *sa,
545c0dd49bdSEiji Ota socklen_t len, cred_t *cr);
546c0dd49bdSEiji Ota void rdsv3_remove_bound(struct rdsv3_sock *rs);
54780166370Sagiri struct rdsv3_sock *rdsv3_find_bound(struct rdsv3_connection *conn,
54880166370Sagiri uint16_be_t port);
54980166370Sagiri struct rdsv3_ip_bucket *rdsv3_find_ip_bucket(ipaddr_t, zoneid_t);
550c0dd49bdSEiji Ota
551c0dd49bdSEiji Ota /* conn.c */
552c0dd49bdSEiji Ota int rdsv3_conn_init(void);
553c0dd49bdSEiji Ota void rdsv3_conn_exit(void);
554c0dd49bdSEiji Ota struct rdsv3_connection *rdsv3_conn_create(uint32_be_t laddr, uint32_be_t faddr,
555c0dd49bdSEiji Ota struct rdsv3_transport *trans, int gfp);
556c0dd49bdSEiji Ota struct rdsv3_connection *rdsv3_conn_create_outgoing(uint32_be_t laddr,
557c0dd49bdSEiji Ota uint32_be_t faddr,
558c0dd49bdSEiji Ota struct rdsv3_transport *trans, int gfp);
5595d5562f5SEiji Ota void rdsv3_conn_shutdown(struct rdsv3_connection *conn);
560c0dd49bdSEiji Ota void rdsv3_conn_destroy(struct rdsv3_connection *conn);
561c0dd49bdSEiji Ota void rdsv3_conn_reset(struct rdsv3_connection *conn);
562c0dd49bdSEiji Ota void rdsv3_conn_drop(struct rdsv3_connection *conn);
563c0dd49bdSEiji Ota void rdsv3_for_each_conn_info(struct rsock *sock, unsigned int len,
564c0dd49bdSEiji Ota struct rdsv3_info_iterator *iter,
565c0dd49bdSEiji Ota struct rdsv3_info_lengths *lens,
566c0dd49bdSEiji Ota int (*visitor)(struct rdsv3_connection *, void *),
567c0dd49bdSEiji Ota size_t item_len);
568c0dd49bdSEiji Ota
569c0dd49bdSEiji Ota static inline int
rdsv3_conn_transition(struct rdsv3_connection * conn,int old,int new)570c0dd49bdSEiji Ota rdsv3_conn_transition(struct rdsv3_connection *conn, int old, int new)
571c0dd49bdSEiji Ota {
572c0dd49bdSEiji Ota return (atomic_cmpxchg(&conn->c_state, old, new) == old);
573c0dd49bdSEiji Ota }
574c0dd49bdSEiji Ota
5751a561c76SEiji Ota static inline int
rdsv3_conn_state(struct rdsv3_connection * conn)576c0dd49bdSEiji Ota rdsv3_conn_state(struct rdsv3_connection *conn)
577c0dd49bdSEiji Ota {
578c0dd49bdSEiji Ota return (atomic_get(&conn->c_state));
579c0dd49bdSEiji Ota }
580c0dd49bdSEiji Ota
5811a561c76SEiji Ota static inline int
rdsv3_conn_up(struct rdsv3_connection * conn)582c0dd49bdSEiji Ota rdsv3_conn_up(struct rdsv3_connection *conn)
583c0dd49bdSEiji Ota {
584c0dd49bdSEiji Ota return (atomic_get(&conn->c_state) == RDSV3_CONN_UP);
585c0dd49bdSEiji Ota }
586c0dd49bdSEiji Ota
5871a561c76SEiji Ota static inline int
rdsv3_conn_connecting(struct rdsv3_connection * conn)588c0dd49bdSEiji Ota rdsv3_conn_connecting(struct rdsv3_connection *conn)
589c0dd49bdSEiji Ota {
590c0dd49bdSEiji Ota return (atomic_get(&conn->c_state) == RDSV3_CONN_CONNECTING);
591c0dd49bdSEiji Ota }
592c0dd49bdSEiji Ota
593c0dd49bdSEiji Ota /* recv.c */
594c0dd49bdSEiji Ota void rdsv3_inc_init(struct rdsv3_incoming *inc, struct rdsv3_connection *conn,
595c0dd49bdSEiji Ota uint32_be_t saddr);
596c0dd49bdSEiji Ota void rdsv3_inc_addref(struct rdsv3_incoming *inc);
597c0dd49bdSEiji Ota void rdsv3_inc_put(struct rdsv3_incoming *inc);
598c0dd49bdSEiji Ota void rdsv3_recv_incoming(struct rdsv3_connection *conn, uint32_be_t saddr,
599c0dd49bdSEiji Ota uint32_be_t daddr,
600c0dd49bdSEiji Ota struct rdsv3_incoming *inc, int gfp);
601c0dd49bdSEiji Ota int rdsv3_recvmsg(struct rdsv3_sock *rs, uio_t *uio,
602c0dd49bdSEiji Ota struct msghdr *msg, size_t size, int msg_flags);
603c0dd49bdSEiji Ota void rdsv3_clear_recv_queue(struct rdsv3_sock *rs);
604c0dd49bdSEiji Ota int rdsv3_notify_queue_get(struct rdsv3_sock *rs, struct msghdr *msg);
605c0dd49bdSEiji Ota void rdsv3_inc_info_copy(struct rdsv3_incoming *inc,
606c0dd49bdSEiji Ota struct rdsv3_info_iterator *iter,
607c0dd49bdSEiji Ota uint32_be_t saddr, uint32_be_t daddr, int flip);
608c0dd49bdSEiji Ota
609c0dd49bdSEiji Ota /* page.c */
610c0dd49bdSEiji Ota int rdsv3_page_remainder_alloc(struct rdsv3_scatterlist *scat,
611c0dd49bdSEiji Ota unsigned long bytes, int gfp);
612c0dd49bdSEiji Ota
613c0dd49bdSEiji Ota /* send.c */
614c0dd49bdSEiji Ota int rdsv3_sendmsg(struct rdsv3_sock *rs, uio_t *uio, struct nmsghdr *msg,
615c0dd49bdSEiji Ota size_t payload_len);
616c0dd49bdSEiji Ota void rdsv3_send_reset(struct rdsv3_connection *conn);
617c0dd49bdSEiji Ota int rdsv3_send_xmit(struct rdsv3_connection *conn);
618c0dd49bdSEiji Ota struct sockaddr_in;
619c0dd49bdSEiji Ota void rdsv3_send_drop_to(struct rdsv3_sock *rs, struct sockaddr_in *dest);
620c0dd49bdSEiji Ota typedef int (*is_acked_func)(struct rdsv3_message *rm, uint64_t ack);
621c0dd49bdSEiji Ota void rdsv3_send_drop_acked(struct rdsv3_connection *conn, uint64_t ack,
622c0dd49bdSEiji Ota is_acked_func is_acked);
623c0dd49bdSEiji Ota int rdsv3_send_acked_before(struct rdsv3_connection *conn, uint64_t seq);
624c0dd49bdSEiji Ota void rdsv3_send_remove_from_sock(struct list *messages, int status);
625c0dd49bdSEiji Ota int rdsv3_send_pong(struct rdsv3_connection *conn, uint16_be_t dport);
626c0dd49bdSEiji Ota struct rdsv3_message *rdsv3_send_get_message(struct rdsv3_connection *,
627c0dd49bdSEiji Ota struct rdsv3_rdma_op *);
628c0dd49bdSEiji Ota
629c0dd49bdSEiji Ota /* rdma.c */
630c0dd49bdSEiji Ota void rdsv3_rdma_unuse(struct rdsv3_sock *rs, uint32_t r_key, int force);
631c0dd49bdSEiji Ota
632c0dd49bdSEiji Ota /* cong.c */
633c0dd49bdSEiji Ota void rdsv3_cong_init(void);
634c0dd49bdSEiji Ota int rdsv3_cong_get_maps(struct rdsv3_connection *conn);
635c0dd49bdSEiji Ota void rdsv3_cong_add_conn(struct rdsv3_connection *conn);
636c0dd49bdSEiji Ota void rdsv3_cong_remove_conn(struct rdsv3_connection *conn);
637c0dd49bdSEiji Ota void rdsv3_cong_set_bit(struct rdsv3_cong_map *map, uint16_be_t port);
638c0dd49bdSEiji Ota void rdsv3_cong_clear_bit(struct rdsv3_cong_map *map, uint16_be_t port);
639c0dd49bdSEiji Ota int rdsv3_cong_wait(struct rdsv3_cong_map *map, uint16_be_t port, int nonblock,
640c0dd49bdSEiji Ota struct rdsv3_sock *rs);
641c0dd49bdSEiji Ota void rdsv3_cong_queue_updates(struct rdsv3_cong_map *map);
642c0dd49bdSEiji Ota void rdsv3_cong_map_updated(struct rdsv3_cong_map *map, uint64_t);
643c0dd49bdSEiji Ota int rdsv3_cong_updated_since(unsigned long *recent);
644c0dd49bdSEiji Ota void rdsv3_cong_add_socket(struct rdsv3_sock *);
645c0dd49bdSEiji Ota void rdsv3_cong_remove_socket(struct rdsv3_sock *);
646c0dd49bdSEiji Ota void rdsv3_cong_exit(void);
647c0dd49bdSEiji Ota struct rdsv3_message *rdsv3_cong_update_alloc(struct rdsv3_connection *conn);
648c0dd49bdSEiji Ota
649c0dd49bdSEiji Ota /* stats.c */
650*a530e0a9Sagiri extern uint_t nr_cpus;
651*a530e0a9Sagiri extern struct rdsv3_statistics *rdsv3_stats;
652*a530e0a9Sagiri #define rdsv3_per_cpu(var, cpu) var[cpu]
653cadbfdc3SEiji Ota #define rdsv3_stats_add_which(which, member, count) do { \
654*a530e0a9Sagiri rdsv3_per_cpu(which, CPU->cpu_seqid).member += count; \
655c0dd49bdSEiji Ota } while (0)
656*a530e0a9Sagiri #define rdsv3_stats_inc(member) \
657*a530e0a9Sagiri rdsv3_stats_add_which(rdsv3_stats, member, 1)
658c0dd49bdSEiji Ota #define rdsv3_stats_add(member, count) \
659c0dd49bdSEiji Ota rdsv3_stats_add_which(rdsv3_stats, member, count)
660c0dd49bdSEiji Ota int rdsv3_stats_init(void);
661c0dd49bdSEiji Ota void rdsv3_stats_exit(void);
662c0dd49bdSEiji Ota void rdsv3_stats_info_copy(struct rdsv3_info_iterator *iter,
663c0dd49bdSEiji Ota uint64_t *values, char **names, size_t nr);
664c0dd49bdSEiji Ota
665c0dd49bdSEiji Ota
666c0dd49bdSEiji Ota /* sysctl.c */
667c0dd49bdSEiji Ota int rdsv3_sysctl_init(void);
668c0dd49bdSEiji Ota void rdsv3_sysctl_exit(void);
669c0dd49bdSEiji Ota extern unsigned long rdsv3_sysctl_sndbuf_min;
670c0dd49bdSEiji Ota extern unsigned long rdsv3_sysctl_sndbuf_default;
671c0dd49bdSEiji Ota extern unsigned long rdsv3_sysctl_sndbuf_max;
672c0dd49bdSEiji Ota extern unsigned long rdsv3_sysctl_reconnect_min_jiffies;
673c0dd49bdSEiji Ota extern unsigned long rdsv3_sysctl_reconnect_max_jiffies;
674c0dd49bdSEiji Ota extern unsigned int rdsv3_sysctl_max_unacked_packets;
675c0dd49bdSEiji Ota extern unsigned int rdsv3_sysctl_max_unacked_bytes;
676c0dd49bdSEiji Ota extern unsigned int rdsv3_sysctl_ping_enable;
677c0dd49bdSEiji Ota extern unsigned long rdsv3_sysctl_trace_flags;
678c0dd49bdSEiji Ota extern unsigned int rdsv3_sysctl_trace_level;
679c0dd49bdSEiji Ota
680c0dd49bdSEiji Ota /* threads.c */
681c0dd49bdSEiji Ota int rdsv3_threads_init();
682c0dd49bdSEiji Ota void rdsv3_threads_exit(void);
683c0dd49bdSEiji Ota extern struct rdsv3_workqueue_struct_s *rdsv3_wq;
6845d5562f5SEiji Ota void rdsv3_queue_reconnect(struct rdsv3_connection *conn);
685c0dd49bdSEiji Ota void rdsv3_connect_worker(struct rdsv3_work_s *);
686c0dd49bdSEiji Ota void rdsv3_shutdown_worker(struct rdsv3_work_s *);
687c0dd49bdSEiji Ota void rdsv3_send_worker(struct rdsv3_work_s *);
688c0dd49bdSEiji Ota void rdsv3_recv_worker(struct rdsv3_work_s *);
6895d5562f5SEiji Ota void rdsv3_reaper_worker(struct rdsv3_work_s *);
690c0dd49bdSEiji Ota void rdsv3_connect_complete(struct rdsv3_connection *conn);
691c0dd49bdSEiji Ota
692c0dd49bdSEiji Ota /* transport.c */
693c0dd49bdSEiji Ota int rdsv3_trans_register(struct rdsv3_transport *trans);
694c0dd49bdSEiji Ota void rdsv3_trans_unregister(struct rdsv3_transport *trans);
695c0dd49bdSEiji Ota struct rdsv3_transport *rdsv3_trans_get_preferred(uint32_be_t addr);
696c0dd49bdSEiji Ota unsigned int rdsv3_trans_stats_info_copy(struct rdsv3_info_iterator *iter,
697c0dd49bdSEiji Ota unsigned int avail);
698c0dd49bdSEiji Ota void rdsv3_trans_exit(void);
699c0dd49bdSEiji Ota
700c0dd49bdSEiji Ota /* message.c */
701c0dd49bdSEiji Ota struct rdsv3_message *rdsv3_message_alloc(unsigned int nents, int gfp);
702c0dd49bdSEiji Ota struct rdsv3_message *rdsv3_message_copy_from_user(struct uio *uiop,
703c0dd49bdSEiji Ota size_t total_len);
704c0dd49bdSEiji Ota struct rdsv3_message *rdsv3_message_map_pages(unsigned long *page_addrs,
705c0dd49bdSEiji Ota unsigned int total_len);
706c0dd49bdSEiji Ota void rdsv3_message_populate_header(struct rdsv3_header *hdr, uint16_be_t sport,
707c0dd49bdSEiji Ota uint16_be_t dport, uint64_t seq);
708c0dd49bdSEiji Ota int rdsv3_message_add_extension(struct rdsv3_header *hdr,
709c0dd49bdSEiji Ota unsigned int type, const void *data, unsigned int len);
710c0dd49bdSEiji Ota int rdsv3_message_next_extension(struct rdsv3_header *hdr,
711c0dd49bdSEiji Ota unsigned int *pos, void *buf, unsigned int *buflen);
712c0dd49bdSEiji Ota int rdsv3_message_add_version_extension(struct rdsv3_header *hdr,
713c0dd49bdSEiji Ota unsigned int version);
714c0dd49bdSEiji Ota int rdsv3_message_get_version_extension(struct rdsv3_header *hdr,
715c0dd49bdSEiji Ota unsigned int *version);
716c0dd49bdSEiji Ota int rdsv3_message_add_rdma_dest_extension(struct rdsv3_header *hdr,
717c0dd49bdSEiji Ota uint32_t r_key, uint32_t offset);
718c0dd49bdSEiji Ota int rdsv3_message_inc_copy_to_user(struct rdsv3_incoming *inc,
719c0dd49bdSEiji Ota uio_t *uio, size_t size);
720c0dd49bdSEiji Ota void rdsv3_message_inc_free(struct rdsv3_incoming *inc);
721c0dd49bdSEiji Ota void rdsv3_message_addref(struct rdsv3_message *rm);
722c0dd49bdSEiji Ota void rdsv3_message_put(struct rdsv3_message *rm);
723c0dd49bdSEiji Ota void rdsv3_message_wait(struct rdsv3_message *rm);
724c0dd49bdSEiji Ota void rdsv3_message_unmapped(struct rdsv3_message *rm);
725c0dd49bdSEiji Ota
7261a561c76SEiji Ota static inline void
rdsv3_message_make_checksum(struct rdsv3_header * hdr)727c0dd49bdSEiji Ota rdsv3_message_make_checksum(struct rdsv3_header *hdr)
728c0dd49bdSEiji Ota {
729c0dd49bdSEiji Ota hdr->h_csum = 0;
730c0dd49bdSEiji Ota hdr->h_csum =
731c0dd49bdSEiji Ota rdsv3_ip_fast_csum((void *)hdr, sizeof (*hdr) >> 2);
732c0dd49bdSEiji Ota }
733c0dd49bdSEiji Ota
7341a561c76SEiji Ota static inline int
rdsv3_message_verify_checksum(const struct rdsv3_header * hdr)735c0dd49bdSEiji Ota rdsv3_message_verify_checksum(const struct rdsv3_header *hdr)
736c0dd49bdSEiji Ota {
737c0dd49bdSEiji Ota return (!hdr->h_csum ||
738c0dd49bdSEiji Ota rdsv3_ip_fast_csum((void *)hdr, sizeof (*hdr) >> 2) == 0);
739c0dd49bdSEiji Ota }
740c0dd49bdSEiji Ota
741c0dd49bdSEiji Ota /* rdsv3_sc.c */
742c0dd49bdSEiji Ota extern boolean_t rdsv3_if_lookup_by_name(char *if_name);
743c0dd49bdSEiji Ota extern int rdsv3_sc_path_lookup(ipaddr_t *localip, ipaddr_t *remip);
744c0dd49bdSEiji Ota extern ipaddr_t rdsv3_scaddr_to_ibaddr(ipaddr_t addr);
745c0dd49bdSEiji Ota
746c0dd49bdSEiji Ota #ifdef __cplusplus
747c0dd49bdSEiji Ota }
748c0dd49bdSEiji Ota #endif
749c0dd49bdSEiji Ota
750c0dd49bdSEiji Ota #endif /* _RDSV3_RDSV3_H */
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