1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Lin 1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
2 /* 2 /*
3 * Copyright (c) 2008, 2018 Oracle and/or its 3 * Copyright (c) 2008, 2018 Oracle and/or its affiliates. All rights reserved.
4 * 4 *
5 * This software is available to you under a c 5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed un 6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, ava 7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this sourc 8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below: 9 * OpenIB.org BSD license below:
10 * 10 *
11 * Redistribution and use in source and bi 11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted pro 12 * without modification, are permitted provided that the following
13 * conditions are met: 13 * conditions are met:
14 * 14 *
15 * - Redistributions of source code must 15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of condi 16 * copyright notice, this list of conditions and the following
17 * disclaimer. 17 * disclaimer.
18 * 18 *
19 * - Redistributions in binary form must 19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of condi 20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/ 21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution. 22 * provided with the distribution.
23 * 23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT W 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMIT 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR P 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTH 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER L 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARIS 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE. 31 * SOFTWARE.
32 * 32 *
33 */ 33 */
34 34
35 #ifndef _LINUX_RDS_H 35 #ifndef _LINUX_RDS_H
36 #define _LINUX_RDS_H 36 #define _LINUX_RDS_H
37 37
38 #include <linux/types.h> 38 #include <linux/types.h>
39 #include <linux/socket.h> /* For 39 #include <linux/socket.h> /* For __kernel_sockaddr_storage. */
40 #include <linux/in6.h> /* For 40 #include <linux/in6.h> /* For struct in6_addr. */
41 41
42 #define RDS_IB_ABI_VERSION 0x301 42 #define RDS_IB_ABI_VERSION 0x301
43 43
44 #define SOL_RDS 276 44 #define SOL_RDS 276
45 45
46 /* 46 /*
47 * setsockopt/getsockopt for SOL_RDS 47 * setsockopt/getsockopt for SOL_RDS
48 */ 48 */
49 #define RDS_CANCEL_SENT_TO 1 49 #define RDS_CANCEL_SENT_TO 1
50 #define RDS_GET_MR 2 50 #define RDS_GET_MR 2
51 #define RDS_FREE_MR 3 51 #define RDS_FREE_MR 3
52 /* deprecated: RDS_BARRIER 4 */ 52 /* deprecated: RDS_BARRIER 4 */
53 #define RDS_RECVERR 5 53 #define RDS_RECVERR 5
54 #define RDS_CONG_MONITOR 6 54 #define RDS_CONG_MONITOR 6
55 #define RDS_GET_MR_FOR_DEST 7 55 #define RDS_GET_MR_FOR_DEST 7
56 #define SO_RDS_TRANSPORT 8 56 #define SO_RDS_TRANSPORT 8
57 57
58 /* Socket option to tap receive path latency 58 /* Socket option to tap receive path latency
59 * SO_RDS: SO_RDS_MSG_RXPATH_LATENCY 59 * SO_RDS: SO_RDS_MSG_RXPATH_LATENCY
60 * Format used struct rds_rx_trace_so 60 * Format used struct rds_rx_trace_so
61 */ 61 */
62 #define SO_RDS_MSG_RXPATH_LATENCY 10 62 #define SO_RDS_MSG_RXPATH_LATENCY 10
63 63
64 64
65 /* supported values for SO_RDS_TRANSPORT */ 65 /* supported values for SO_RDS_TRANSPORT */
66 #define RDS_TRANS_IB 0 66 #define RDS_TRANS_IB 0
67 #define RDS_TRANS_GAP 1 !! 67 #define RDS_TRANS_IWARP 1
68 #define RDS_TRANS_TCP 2 68 #define RDS_TRANS_TCP 2
69 #define RDS_TRANS_COUNT 3 69 #define RDS_TRANS_COUNT 3
70 #define RDS_TRANS_NONE (~0) 70 #define RDS_TRANS_NONE (~0)
71 /* don't use RDS_TRANS_IWARP - it is deprecate <<
72 #define RDS_TRANS_IWARP RDS_TRANS_GAP <<
73 <<
74 /* IOCTLS commands for SOL_RDS */ <<
75 #define SIOCRDSSETTOS (SIOCPROTOPRIV <<
76 #define SIOCRDSGETTOS (SIOCPROTOPRIV <<
77 <<
78 typedef __u8 rds_tos_t; <<
79 71
80 /* 72 /*
81 * Control message types for SOL_RDS. 73 * Control message types for SOL_RDS.
82 * 74 *
83 * CMSG_RDMA_ARGS (sendmsg) 75 * CMSG_RDMA_ARGS (sendmsg)
84 * Request a RDMA transfer to/from the sp 76 * Request a RDMA transfer to/from the specified
85 * memory ranges. 77 * memory ranges.
86 * The cmsg_data is a struct rds_rdma_arg 78 * The cmsg_data is a struct rds_rdma_args.
87 * RDS_CMSG_RDMA_DEST (recvmsg, sendmsg) 79 * RDS_CMSG_RDMA_DEST (recvmsg, sendmsg)
88 * Kernel informs application about inten 80 * Kernel informs application about intended
89 * source/destination of a RDMA transfer 81 * source/destination of a RDMA transfer
90 * RDS_CMSG_RDMA_MAP (sendmsg) 82 * RDS_CMSG_RDMA_MAP (sendmsg)
91 * Application asks kernel to map the giv 83 * Application asks kernel to map the given
92 * memory range into a IB MR, and send th 84 * memory range into a IB MR, and send the
93 * R_Key along in an RDS extension header 85 * R_Key along in an RDS extension header.
94 * The cmsg_data is a struct rds_get_mr_a 86 * The cmsg_data is a struct rds_get_mr_args,
95 * the same as for the GET_MR setsockopt. 87 * the same as for the GET_MR setsockopt.
96 * RDS_CMSG_RDMA_STATUS (recvmsg) 88 * RDS_CMSG_RDMA_STATUS (recvmsg)
97 * Returns the status of a completed RDMA 89 * Returns the status of a completed RDMA operation.
98 * RDS_CMSG_RXPATH_LATENCY(recvmsg) 90 * RDS_CMSG_RXPATH_LATENCY(recvmsg)
99 * Returns rds message latencies in vario 91 * Returns rds message latencies in various stages of receive
100 * path in nS. Its set per socket using S 92 * path in nS. Its set per socket using SO_RDS_MSG_RXPATH_LATENCY
101 * socket option. Legitimate points are d 93 * socket option. Legitimate points are defined in
102 * enum rds_message_rxpath_latency. More 94 * enum rds_message_rxpath_latency. More points can be added in
103 * future. CSMG format is struct rds_cmsg 95 * future. CSMG format is struct rds_cmsg_rx_trace.
104 */ 96 */
105 #define RDS_CMSG_RDMA_ARGS 1 97 #define RDS_CMSG_RDMA_ARGS 1
106 #define RDS_CMSG_RDMA_DEST 2 98 #define RDS_CMSG_RDMA_DEST 2
107 #define RDS_CMSG_RDMA_MAP 3 99 #define RDS_CMSG_RDMA_MAP 3
108 #define RDS_CMSG_RDMA_STATUS 4 100 #define RDS_CMSG_RDMA_STATUS 4
109 #define RDS_CMSG_CONG_UPDATE 5 101 #define RDS_CMSG_CONG_UPDATE 5
110 #define RDS_CMSG_ATOMIC_FADD 6 102 #define RDS_CMSG_ATOMIC_FADD 6
111 #define RDS_CMSG_ATOMIC_CSWP 7 103 #define RDS_CMSG_ATOMIC_CSWP 7
112 #define RDS_CMSG_MASKED_ATOMIC_FADD 8 104 #define RDS_CMSG_MASKED_ATOMIC_FADD 8
113 #define RDS_CMSG_MASKED_ATOMIC_CSWP 9 105 #define RDS_CMSG_MASKED_ATOMIC_CSWP 9
114 #define RDS_CMSG_RXPATH_LATENCY 11 106 #define RDS_CMSG_RXPATH_LATENCY 11
115 #define RDS_CMSG_ZCOPY_COOKIE 12 107 #define RDS_CMSG_ZCOPY_COOKIE 12
116 #define RDS_CMSG_ZCOPY_COMPLETION 13 108 #define RDS_CMSG_ZCOPY_COMPLETION 13
117 109
118 #define RDS_INFO_FIRST 10000 110 #define RDS_INFO_FIRST 10000
119 #define RDS_INFO_COUNTERS 10000 111 #define RDS_INFO_COUNTERS 10000
120 #define RDS_INFO_CONNECTIONS 10001 112 #define RDS_INFO_CONNECTIONS 10001
121 /* 10002 aka RDS_INFO_FLOWS is deprecated */ 113 /* 10002 aka RDS_INFO_FLOWS is deprecated */
122 #define RDS_INFO_SEND_MESSAGES 10003 114 #define RDS_INFO_SEND_MESSAGES 10003
123 #define RDS_INFO_RETRANS_MESSAGES 10004 115 #define RDS_INFO_RETRANS_MESSAGES 10004
124 #define RDS_INFO_RECV_MESSAGES 10005 116 #define RDS_INFO_RECV_MESSAGES 10005
125 #define RDS_INFO_SOCKETS 10006 117 #define RDS_INFO_SOCKETS 10006
126 #define RDS_INFO_TCP_SOCKETS 10007 118 #define RDS_INFO_TCP_SOCKETS 10007
127 #define RDS_INFO_IB_CONNECTIONS 10008 119 #define RDS_INFO_IB_CONNECTIONS 10008
128 #define RDS_INFO_CONNECTION_STATS 10009 120 #define RDS_INFO_CONNECTION_STATS 10009
129 #define RDS_INFO_IWARP_CONNECTIONS 10010 121 #define RDS_INFO_IWARP_CONNECTIONS 10010
130 122
131 /* PF_RDS6 options */ 123 /* PF_RDS6 options */
132 #define RDS6_INFO_CONNECTIONS 10011 124 #define RDS6_INFO_CONNECTIONS 10011
133 #define RDS6_INFO_SEND_MESSAGES 10012 125 #define RDS6_INFO_SEND_MESSAGES 10012
134 #define RDS6_INFO_RETRANS_MESSAGES 10013 126 #define RDS6_INFO_RETRANS_MESSAGES 10013
135 #define RDS6_INFO_RECV_MESSAGES 10014 127 #define RDS6_INFO_RECV_MESSAGES 10014
136 #define RDS6_INFO_SOCKETS 10015 128 #define RDS6_INFO_SOCKETS 10015
137 #define RDS6_INFO_TCP_SOCKETS 10016 129 #define RDS6_INFO_TCP_SOCKETS 10016
138 #define RDS6_INFO_IB_CONNECTIONS 10017 130 #define RDS6_INFO_IB_CONNECTIONS 10017
139 131
140 #define RDS_INFO_LAST 10017 132 #define RDS_INFO_LAST 10017
141 133
142 struct rds_info_counter { 134 struct rds_info_counter {
143 __u8 name[32]; 135 __u8 name[32];
144 __u64 value; 136 __u64 value;
145 } __attribute__((packed)); 137 } __attribute__((packed));
146 138
147 #define RDS_INFO_CONNECTION_FLAG_SENDING 139 #define RDS_INFO_CONNECTION_FLAG_SENDING 0x01
148 #define RDS_INFO_CONNECTION_FLAG_CONNECTING 140 #define RDS_INFO_CONNECTION_FLAG_CONNECTING 0x02
149 #define RDS_INFO_CONNECTION_FLAG_CONNECTED 141 #define RDS_INFO_CONNECTION_FLAG_CONNECTED 0x04
150 142
151 #define TRANSNAMSIZ 16 143 #define TRANSNAMSIZ 16
152 144
153 struct rds_info_connection { 145 struct rds_info_connection {
154 __u64 next_tx_seq; 146 __u64 next_tx_seq;
155 __u64 next_rx_seq; 147 __u64 next_rx_seq;
156 __be32 laddr; 148 __be32 laddr;
157 __be32 faddr; 149 __be32 faddr;
158 __u8 transport[TRANSNAMSIZ] 150 __u8 transport[TRANSNAMSIZ]; /* null term ascii */
159 __u8 flags; 151 __u8 flags;
160 __u8 tos; <<
161 } __attribute__((packed)); 152 } __attribute__((packed));
162 153
163 struct rds6_info_connection { 154 struct rds6_info_connection {
164 __u64 next_tx_seq; 155 __u64 next_tx_seq;
165 __u64 next_rx_seq; 156 __u64 next_rx_seq;
166 struct in6_addr laddr; 157 struct in6_addr laddr;
167 struct in6_addr faddr; 158 struct in6_addr faddr;
168 __u8 transport[TRANSNAMSIZ] 159 __u8 transport[TRANSNAMSIZ]; /* null term ascii */
169 __u8 flags; 160 __u8 flags;
170 } __attribute__((packed)); 161 } __attribute__((packed));
171 162
172 #define RDS_INFO_MESSAGE_FLAG_ACK 163 #define RDS_INFO_MESSAGE_FLAG_ACK 0x01
173 #define RDS_INFO_MESSAGE_FLAG_FAST_ACK 164 #define RDS_INFO_MESSAGE_FLAG_FAST_ACK 0x02
174 165
175 struct rds_info_message { 166 struct rds_info_message {
176 __u64 seq; 167 __u64 seq;
177 __u32 len; 168 __u32 len;
178 __be32 laddr; 169 __be32 laddr;
179 __be32 faddr; 170 __be32 faddr;
180 __be16 lport; 171 __be16 lport;
181 __be16 fport; 172 __be16 fport;
182 __u8 flags; 173 __u8 flags;
183 __u8 tos; <<
184 } __attribute__((packed)); 174 } __attribute__((packed));
185 175
186 struct rds6_info_message { 176 struct rds6_info_message {
187 __u64 seq; 177 __u64 seq;
188 __u32 len; 178 __u32 len;
189 struct in6_addr laddr; 179 struct in6_addr laddr;
190 struct in6_addr faddr; 180 struct in6_addr faddr;
191 __be16 lport; 181 __be16 lport;
192 __be16 fport; 182 __be16 fport;
193 __u8 flags; 183 __u8 flags;
194 __u8 tos; 184 __u8 tos;
195 } __attribute__((packed)); 185 } __attribute__((packed));
196 186
197 struct rds_info_socket { 187 struct rds_info_socket {
198 __u32 sndbuf; 188 __u32 sndbuf;
199 __be32 bound_addr; 189 __be32 bound_addr;
200 __be32 connected_addr; 190 __be32 connected_addr;
201 __be16 bound_port; 191 __be16 bound_port;
202 __be16 connected_port; 192 __be16 connected_port;
203 __u32 rcvbuf; 193 __u32 rcvbuf;
204 __u64 inum; 194 __u64 inum;
205 } __attribute__((packed)); 195 } __attribute__((packed));
206 196
207 struct rds6_info_socket { 197 struct rds6_info_socket {
208 __u32 sndbuf; 198 __u32 sndbuf;
209 struct in6_addr bound_addr; 199 struct in6_addr bound_addr;
210 struct in6_addr connected_addr; 200 struct in6_addr connected_addr;
211 __be16 bound_port; 201 __be16 bound_port;
212 __be16 connected_port; 202 __be16 connected_port;
213 __u32 rcvbuf; 203 __u32 rcvbuf;
214 __u64 inum; 204 __u64 inum;
215 } __attribute__((packed)); 205 } __attribute__((packed));
216 206
217 struct rds_info_tcp_socket { 207 struct rds_info_tcp_socket {
218 __be32 local_addr; 208 __be32 local_addr;
219 __be16 local_port; 209 __be16 local_port;
220 __be32 peer_addr; 210 __be32 peer_addr;
221 __be16 peer_port; 211 __be16 peer_port;
222 __u64 hdr_rem; 212 __u64 hdr_rem;
223 __u64 data_rem; 213 __u64 data_rem;
224 __u32 last_sent_nxt; 214 __u32 last_sent_nxt;
225 __u32 last_expected_una; 215 __u32 last_expected_una;
226 __u32 last_seen_una; 216 __u32 last_seen_una;
227 __u8 tos; <<
228 } __attribute__((packed)); 217 } __attribute__((packed));
229 218
230 struct rds6_info_tcp_socket { 219 struct rds6_info_tcp_socket {
231 struct in6_addr local_addr; 220 struct in6_addr local_addr;
232 __be16 local_port; 221 __be16 local_port;
233 struct in6_addr peer_addr; 222 struct in6_addr peer_addr;
234 __be16 peer_port; 223 __be16 peer_port;
235 __u64 hdr_rem; 224 __u64 hdr_rem;
236 __u64 data_rem; 225 __u64 data_rem;
237 __u32 last_sent_nxt; 226 __u32 last_sent_nxt;
238 __u32 last_expected_una; 227 __u32 last_expected_una;
239 __u32 last_seen_una; 228 __u32 last_seen_una;
240 } __attribute__((packed)); 229 } __attribute__((packed));
241 230
242 #define RDS_IB_GID_LEN 16 231 #define RDS_IB_GID_LEN 16
243 struct rds_info_rdma_connection { 232 struct rds_info_rdma_connection {
244 __be32 src_addr; 233 __be32 src_addr;
245 __be32 dst_addr; 234 __be32 dst_addr;
246 __u8 src_gid[RDS_IB_GID_LEN 235 __u8 src_gid[RDS_IB_GID_LEN];
247 __u8 dst_gid[RDS_IB_GID_LEN 236 __u8 dst_gid[RDS_IB_GID_LEN];
248 237
249 __u32 max_send_wr; 238 __u32 max_send_wr;
250 __u32 max_recv_wr; 239 __u32 max_recv_wr;
251 __u32 max_send_sge; 240 __u32 max_send_sge;
252 __u32 rdma_mr_max; 241 __u32 rdma_mr_max;
253 __u32 rdma_mr_size; 242 __u32 rdma_mr_size;
254 __u8 tos; <<
255 __u8 sl; <<
256 __u32 cache_allocs; <<
257 }; 243 };
258 244
259 struct rds6_info_rdma_connection { 245 struct rds6_info_rdma_connection {
260 struct in6_addr src_addr; 246 struct in6_addr src_addr;
261 struct in6_addr dst_addr; 247 struct in6_addr dst_addr;
262 __u8 src_gid[RDS_IB_GID_LEN 248 __u8 src_gid[RDS_IB_GID_LEN];
263 __u8 dst_gid[RDS_IB_GID_LEN 249 __u8 dst_gid[RDS_IB_GID_LEN];
264 250
265 __u32 max_send_wr; 251 __u32 max_send_wr;
266 __u32 max_recv_wr; 252 __u32 max_recv_wr;
267 __u32 max_send_sge; 253 __u32 max_send_sge;
268 __u32 rdma_mr_max; 254 __u32 rdma_mr_max;
269 __u32 rdma_mr_size; 255 __u32 rdma_mr_size;
270 __u8 tos; <<
271 __u8 sl; <<
272 __u32 cache_allocs; <<
273 }; 256 };
274 257
275 /* RDS message Receive Path Latency points */ 258 /* RDS message Receive Path Latency points */
276 enum rds_message_rxpath_latency { 259 enum rds_message_rxpath_latency {
277 RDS_MSG_RX_HDR_TO_DGRAM_START = 0, 260 RDS_MSG_RX_HDR_TO_DGRAM_START = 0,
278 RDS_MSG_RX_DGRAM_REASSEMBLE, 261 RDS_MSG_RX_DGRAM_REASSEMBLE,
279 RDS_MSG_RX_DGRAM_DELIVERED, 262 RDS_MSG_RX_DGRAM_DELIVERED,
280 RDS_MSG_RX_DGRAM_TRACE_MAX 263 RDS_MSG_RX_DGRAM_TRACE_MAX
281 }; 264 };
282 265
283 struct rds_rx_trace_so { 266 struct rds_rx_trace_so {
284 __u8 rx_traces; 267 __u8 rx_traces;
285 __u8 rx_trace_pos[RDS_MSG_RX_DGRAM_TRA 268 __u8 rx_trace_pos[RDS_MSG_RX_DGRAM_TRACE_MAX];
286 }; 269 };
287 270
288 struct rds_cmsg_rx_trace { 271 struct rds_cmsg_rx_trace {
289 __u8 rx_traces; 272 __u8 rx_traces;
290 __u8 rx_trace_pos[RDS_MSG_RX_DGRAM_TRA 273 __u8 rx_trace_pos[RDS_MSG_RX_DGRAM_TRACE_MAX];
291 __u64 rx_trace[RDS_MSG_RX_DGRAM_TRACE_ 274 __u64 rx_trace[RDS_MSG_RX_DGRAM_TRACE_MAX];
292 }; 275 };
293 276
294 /* 277 /*
295 * Congestion monitoring. 278 * Congestion monitoring.
296 * Congestion control in RDS happens at the ho 279 * Congestion control in RDS happens at the host connection
297 * level by exchanging a bitmap marking conges 280 * level by exchanging a bitmap marking congested ports.
298 * By default, a process sleeping in poll() is 281 * By default, a process sleeping in poll() is always woken
299 * up when the congestion map is updated. 282 * up when the congestion map is updated.
300 * With explicit monitoring, an application ca 283 * With explicit monitoring, an application can have more
301 * fine-grained control. 284 * fine-grained control.
302 * The application installs a 64bit mask value 285 * The application installs a 64bit mask value in the socket,
303 * where each bit corresponds to a group of po 286 * where each bit corresponds to a group of ports.
304 * When a congestion update arrives, RDS check 287 * When a congestion update arrives, RDS checks the set of
305 * ports that are now uncongested against the 288 * ports that are now uncongested against the list bit mask
306 * installed in the socket, and if they overla 289 * installed in the socket, and if they overlap, we queue a
307 * cong_notification on the socket. 290 * cong_notification on the socket.
308 * 291 *
309 * To install the congestion monitor bitmask, 292 * To install the congestion monitor bitmask, use RDS_CONG_MONITOR
310 * with the 64bit mask. 293 * with the 64bit mask.
311 * Congestion updates are received via RDS_CMS 294 * Congestion updates are received via RDS_CMSG_CONG_UPDATE
312 * control messages. 295 * control messages.
313 * 296 *
314 * The correspondence between bits and ports i 297 * The correspondence between bits and ports is
315 * 1 << (portnum % 64) 298 * 1 << (portnum % 64)
316 */ 299 */
317 #define RDS_CONG_MONITOR_SIZE 64 300 #define RDS_CONG_MONITOR_SIZE 64
318 #define RDS_CONG_MONITOR_BIT(port) (((unsigne 301 #define RDS_CONG_MONITOR_BIT(port) (((unsigned int) port) % RDS_CONG_MONITOR_SIZE)
319 #define RDS_CONG_MONITOR_MASK(port) (1ULL << R 302 #define RDS_CONG_MONITOR_MASK(port) (1ULL << RDS_CONG_MONITOR_BIT(port))
320 303
321 /* 304 /*
322 * RDMA related types 305 * RDMA related types
323 */ 306 */
324 307
325 /* 308 /*
326 * This encapsulates a remote memory location. 309 * This encapsulates a remote memory location.
327 * In the current implementation, it contains 310 * In the current implementation, it contains the R_Key
328 * of the remote memory region, and the offset 311 * of the remote memory region, and the offset into it
329 * (so that the application does not have to w 312 * (so that the application does not have to worry about
330 * alignment). 313 * alignment).
331 */ 314 */
332 typedef __u64 rds_rdma_cookie_t; 315 typedef __u64 rds_rdma_cookie_t;
333 316
334 struct rds_iovec { 317 struct rds_iovec {
335 __u64 addr; 318 __u64 addr;
336 __u64 bytes; 319 __u64 bytes;
337 }; 320 };
338 321
339 struct rds_get_mr_args { 322 struct rds_get_mr_args {
340 struct rds_iovec vec; 323 struct rds_iovec vec;
341 __u64 cookie_addr; 324 __u64 cookie_addr;
342 __u64 flags; 325 __u64 flags;
343 }; 326 };
344 327
345 struct rds_get_mr_for_dest_args { 328 struct rds_get_mr_for_dest_args {
346 struct __kernel_sockaddr_storage dest_ 329 struct __kernel_sockaddr_storage dest_addr;
347 struct rds_iovec vec; 330 struct rds_iovec vec;
348 __u64 cookie_addr; 331 __u64 cookie_addr;
349 __u64 flags; 332 __u64 flags;
350 }; 333 };
351 334
352 struct rds_free_mr_args { 335 struct rds_free_mr_args {
353 rds_rdma_cookie_t cookie; 336 rds_rdma_cookie_t cookie;
354 __u64 flags; 337 __u64 flags;
355 }; 338 };
356 339
357 struct rds_rdma_args { 340 struct rds_rdma_args {
358 rds_rdma_cookie_t cookie; 341 rds_rdma_cookie_t cookie;
359 struct rds_iovec remote_vec; 342 struct rds_iovec remote_vec;
360 __u64 local_vec_addr; 343 __u64 local_vec_addr;
361 __u64 nr_local; 344 __u64 nr_local;
362 __u64 flags; 345 __u64 flags;
363 __u64 user_token; 346 __u64 user_token;
364 }; 347 };
365 348
366 struct rds_atomic_args { 349 struct rds_atomic_args {
367 rds_rdma_cookie_t cookie; 350 rds_rdma_cookie_t cookie;
368 __u64 local_addr; 351 __u64 local_addr;
369 __u64 remote_addr; 352 __u64 remote_addr;
370 union { 353 union {
371 struct { 354 struct {
372 __u64 compar 355 __u64 compare;
373 __u64 swap; 356 __u64 swap;
374 } cswp; 357 } cswp;
375 struct { 358 struct {
376 __u64 add; 359 __u64 add;
377 } fadd; 360 } fadd;
378 struct { 361 struct {
379 __u64 compar 362 __u64 compare;
380 __u64 swap; 363 __u64 swap;
381 __u64 compar 364 __u64 compare_mask;
382 __u64 swap_m 365 __u64 swap_mask;
383 } m_cswp; 366 } m_cswp;
384 struct { 367 struct {
385 __u64 add; 368 __u64 add;
386 __u64 nocarr 369 __u64 nocarry_mask;
387 } m_fadd; 370 } m_fadd;
388 }; 371 };
389 __u64 flags; 372 __u64 flags;
390 __u64 user_token; 373 __u64 user_token;
391 }; 374 };
392 375
393 struct rds_rdma_notify { 376 struct rds_rdma_notify {
394 __u64 user_token; 377 __u64 user_token;
395 __s32 status; 378 __s32 status;
396 }; 379 };
397 380
398 #define RDS_RDMA_SUCCESS 0 381 #define RDS_RDMA_SUCCESS 0
399 #define RDS_RDMA_REMOTE_ERROR 1 382 #define RDS_RDMA_REMOTE_ERROR 1
400 #define RDS_RDMA_CANCELED 2 383 #define RDS_RDMA_CANCELED 2
401 #define RDS_RDMA_DROPPED 3 384 #define RDS_RDMA_DROPPED 3
402 #define RDS_RDMA_OTHER_ERROR 4 385 #define RDS_RDMA_OTHER_ERROR 4
403 386
404 #define RDS_MAX_ZCOOKIES 8 387 #define RDS_MAX_ZCOOKIES 8
405 struct rds_zcopy_cookies { 388 struct rds_zcopy_cookies {
406 __u32 num; 389 __u32 num;
407 __u32 cookies[RDS_MAX_ZCOOKIES]; 390 __u32 cookies[RDS_MAX_ZCOOKIES];
408 }; 391 };
409 392
410 /* 393 /*
411 * Common set of flags for all RDMA related st 394 * Common set of flags for all RDMA related structs
412 */ 395 */
413 #define RDS_RDMA_READWRITE 0x0001 396 #define RDS_RDMA_READWRITE 0x0001
414 #define RDS_RDMA_FENCE 0x0002 /* use 397 #define RDS_RDMA_FENCE 0x0002 /* use FENCE for immediate send */
415 #define RDS_RDMA_INVALIDATE 0x0004 /* inv 398 #define RDS_RDMA_INVALIDATE 0x0004 /* invalidate R_Key after freeing MR */
416 #define RDS_RDMA_USE_ONCE 0x0008 /* fre 399 #define RDS_RDMA_USE_ONCE 0x0008 /* free MR after use */
417 #define RDS_RDMA_DONTWAIT 0x0010 /* Don 400 #define RDS_RDMA_DONTWAIT 0x0010 /* Don't wait in SET_BARRIER */
418 #define RDS_RDMA_NOTIFY_ME 0x0020 /* Not 401 #define RDS_RDMA_NOTIFY_ME 0x0020 /* Notify when operation completes */
419 #define RDS_RDMA_SILENT 0x0040 /* Do 402 #define RDS_RDMA_SILENT 0x0040 /* Do not interrupt remote */
420 403
421 #endif /* IB_RDS_H */ 404 #endif /* IB_RDS_H */
422 405
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.