~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/include/rdma/ib_hdrs.h

Version: ~ [ linux-5.5-rc7 ] ~ [ linux-5.4.13 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.97 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.166 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.210 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.210 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.81 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * Copyright(c) 2016 Intel Corporation.
  3  *
  4  * This file is provided under a dual BSD/GPLv2 license.  When using or
  5  * redistributing this file, you may do so under either license.
  6  *
  7  * GPL LICENSE SUMMARY
  8  *
  9  * This program is free software; you can redistribute it and/or modify
 10  * it under the terms of version 2 of the GNU General Public License as
 11  * published by the Free Software Foundation.
 12  *
 13  * This program is distributed in the hope that it will be useful, but
 14  * WITHOUT ANY WARRANTY; without even the implied warranty of
 15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 16  * General Public License for more details.
 17  *
 18  * BSD LICENSE
 19  *
 20  * Redistribution and use in source and binary forms, with or without
 21  * modification, are permitted provided that the following conditions
 22  * are met:
 23  *
 24  *  - Redistributions of source code must retain the above copyright
 25  *    notice, this list of conditions and the following disclaimer.
 26  *  - Redistributions in binary form must reproduce the above copyright
 27  *    notice, this list of conditions and the following disclaimer in
 28  *    the documentation and/or other materials provided with the
 29  *    distribution.
 30  *  - Neither the name of Intel Corporation nor the names of its
 31  *    contributors may be used to endorse or promote products derived
 32  *    from this software without specific prior written permission.
 33  *
 34  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 35  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 36  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 37  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 38  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 39  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 40  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 41  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 42  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 43  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 44  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 45  *
 46  */
 47 
 48 #ifndef IB_HDRS_H
 49 #define IB_HDRS_H
 50 
 51 #include <linux/types.h>
 52 #include <asm/unaligned.h>
 53 #include <rdma/ib_verbs.h>
 54 
 55 #define IB_SEQ_NAK      (3 << 29)
 56 
 57 /* AETH NAK opcode values */
 58 #define IB_RNR_NAK                      0x20
 59 #define IB_NAK_PSN_ERROR                0x60
 60 #define IB_NAK_INVALID_REQUEST          0x61
 61 #define IB_NAK_REMOTE_ACCESS_ERROR      0x62
 62 #define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
 63 #define IB_NAK_INVALID_RD_REQUEST       0x64
 64 
 65 #define IB_BTH_REQ_ACK          BIT(31)
 66 #define IB_BTH_SOLICITED        BIT(23)
 67 #define IB_BTH_MIG_REQ          BIT(22)
 68 
 69 #define IB_GRH_VERSION          6
 70 #define IB_GRH_VERSION_MASK     0xF
 71 #define IB_GRH_VERSION_SHIFT    28
 72 #define IB_GRH_TCLASS_MASK      0xFF
 73 #define IB_GRH_TCLASS_SHIFT     20
 74 #define IB_GRH_FLOW_MASK        0xFFFFF
 75 #define IB_GRH_FLOW_SHIFT       0
 76 #define IB_GRH_NEXT_HDR         0x1B
 77 #define IB_FECN_SHIFT 31
 78 #define IB_FECN_MASK 1
 79 #define IB_FECN_SMASK BIT(IB_FECN_SHIFT)
 80 #define IB_BECN_SHIFT 30
 81 #define IB_BECN_MASK 1
 82 #define IB_BECN_SMASK BIT(IB_BECN_SHIFT)
 83 
 84 #define IB_AETH_CREDIT_SHIFT    24
 85 #define IB_AETH_CREDIT_MASK     0x1F
 86 #define IB_AETH_CREDIT_INVAL    0x1F
 87 #define IB_AETH_NAK_SHIFT       29
 88 #define IB_MSN_MASK             0xFFFFFF
 89 
 90 struct ib_reth {
 91         __be64 vaddr;        /* potentially unaligned */
 92         __be32 rkey;
 93         __be32 length;
 94 } __packed;
 95 
 96 struct ib_atomic_eth {
 97         __be64 vaddr;        /* potentially unaligned */
 98         __be32 rkey;
 99         __be64 swap_data;    /* potentially unaligned */
100         __be64 compare_data; /* potentially unaligned */
101 } __packed;
102 
103 union ib_ehdrs {
104         struct {
105                 __be32 deth[2];
106                 __be32 imm_data;
107         } ud;
108         struct {
109                 struct ib_reth reth;
110                 __be32 imm_data;
111         } rc;
112         struct {
113                 __be32 aeth;
114                 __be64 atomic_ack_eth; /* potentially unaligned */
115         } __packed at;
116         __be32 imm_data;
117         __be32 aeth;
118         __be32 ieth;
119         struct ib_atomic_eth atomic_eth;
120 }  __packed;
121 
122 struct ib_other_headers {
123         __be32 bth[3];
124         union ib_ehdrs u;
125 } __packed;
126 
127 struct ib_header {
128         __be16 lrh[4];
129         union {
130                 struct {
131                         struct ib_grh grh;
132                         struct ib_other_headers oth;
133                 } l;
134                 struct ib_other_headers oth;
135         } u;
136 } __packed;
137 
138 /* accessors for unaligned __be64 items */
139 
140 static inline u64 ib_u64_get(__be64 *p)
141 {
142         return get_unaligned_be64(p);
143 }
144 
145 static inline void ib_u64_put(u64 val, __be64 *p)
146 {
147         put_unaligned_be64(val, p);
148 }
149 
150 static inline u64 get_ib_reth_vaddr(struct ib_reth *reth)
151 {
152         return ib_u64_get(&reth->vaddr);
153 }
154 
155 static inline void put_ib_reth_vaddr(u64 val, struct ib_reth *reth)
156 {
157         ib_u64_put(val, &reth->vaddr);
158 }
159 
160 static inline u64 get_ib_ateth_vaddr(struct ib_atomic_eth *ateth)
161 {
162         return ib_u64_get(&ateth->vaddr);
163 }
164 
165 static inline void put_ib_ateth_vaddr(u64 val, struct ib_atomic_eth *ateth)
166 {
167         ib_u64_put(val, &ateth->vaddr);
168 }
169 
170 static inline u64 get_ib_ateth_swap(struct ib_atomic_eth *ateth)
171 {
172         return ib_u64_get(&ateth->swap_data);
173 }
174 
175 static inline void put_ib_ateth_swap(u64 val, struct ib_atomic_eth *ateth)
176 {
177         ib_u64_put(val, &ateth->swap_data);
178 }
179 
180 static inline u64 get_ib_ateth_compare(struct ib_atomic_eth *ateth)
181 {
182         return ib_u64_get(&ateth->compare_data);
183 }
184 
185 static inline void put_ib_ateth_compare(u64 val, struct ib_atomic_eth *ateth)
186 {
187         ib_u64_put(val, &ateth->compare_data);
188 }
189 
190 /*
191  * 9B/IB Packet Format
192  */
193 #define IB_LNH_MASK             3
194 #define IB_SC_MASK              0xf
195 #define IB_SC_SHIFT             12
196 #define IB_SC5_MASK             0x10
197 #define IB_SL_MASK              0xf
198 #define IB_SL_SHIFT             4
199 #define IB_SL_SHIFT             4
200 #define IB_LVER_MASK    0xf
201 #define IB_LVER_SHIFT   8
202 
203 static inline u8 ib_get_lnh(struct ib_header *hdr)
204 {
205         return (be16_to_cpu(hdr->lrh[0]) & IB_LNH_MASK);
206 }
207 
208 static inline u8 ib_get_sc(struct ib_header *hdr)
209 {
210         return ((be16_to_cpu(hdr->lrh[0]) >> IB_SC_SHIFT) & IB_SC_MASK);
211 }
212 
213 static inline bool ib_is_sc5(u16 sc5)
214 {
215         return !!(sc5 & IB_SC5_MASK);
216 }
217 
218 static inline u8 ib_get_sl(struct ib_header *hdr)
219 {
220         return ((be16_to_cpu(hdr->lrh[0]) >> IB_SL_SHIFT) & IB_SL_MASK);
221 }
222 
223 static inline u16 ib_get_dlid(struct ib_header *hdr)
224 {
225         return (be16_to_cpu(hdr->lrh[1]));
226 }
227 
228 static inline u16 ib_get_slid(struct ib_header *hdr)
229 {
230         return (be16_to_cpu(hdr->lrh[3]));
231 }
232 
233 static inline u8 ib_get_lver(struct ib_header *hdr)
234 {
235         return (u8)((be16_to_cpu(hdr->lrh[0]) >> IB_LVER_SHIFT) &
236                    IB_LVER_MASK);
237 }
238 
239 static inline u16 ib_get_len(struct ib_header *hdr)
240 {
241         return (u16)(be16_to_cpu(hdr->lrh[2]));
242 }
243 
244 static inline u32 ib_get_qkey(struct ib_other_headers *ohdr)
245 {
246         return be32_to_cpu(ohdr->u.ud.deth[0]);
247 }
248 
249 static inline u32 ib_get_sqpn(struct ib_other_headers *ohdr)
250 {
251         return ((be32_to_cpu(ohdr->u.ud.deth[1])) & IB_QPN_MASK);
252 }
253 
254 /*
255  * BTH
256  */
257 #define IB_BTH_OPCODE_MASK      0xff
258 #define IB_BTH_OPCODE_SHIFT     24
259 #define IB_BTH_PAD_MASK 3
260 #define IB_BTH_PKEY_MASK        0xffff
261 #define IB_BTH_PAD_SHIFT        20
262 #define IB_BTH_A_MASK           1
263 #define IB_BTH_A_SHIFT          31
264 #define IB_BTH_M_MASK           1
265 #define IB_BTH_M_SHIFT          22
266 #define IB_BTH_SE_MASK          1
267 #define IB_BTH_SE_SHIFT 23
268 #define IB_BTH_TVER_MASK        0xf
269 #define IB_BTH_TVER_SHIFT       16
270 
271 static inline u8 ib_bth_get_pad(struct ib_other_headers *ohdr)
272 {
273         return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_PAD_SHIFT) &
274                    IB_BTH_PAD_MASK);
275 }
276 
277 static inline u16 ib_bth_get_pkey(struct ib_other_headers *ohdr)
278 {
279         return (be32_to_cpu(ohdr->bth[0]) & IB_BTH_PKEY_MASK);
280 }
281 
282 static inline u8 ib_bth_get_opcode(struct ib_other_headers *ohdr)
283 {
284         return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_OPCODE_SHIFT) &
285                    IB_BTH_OPCODE_MASK);
286 }
287 
288 static inline u8 ib_bth_get_ackreq(struct ib_other_headers *ohdr)
289 {
290         return (u8)((be32_to_cpu(ohdr->bth[2]) >> IB_BTH_A_SHIFT) &
291                    IB_BTH_A_MASK);
292 }
293 
294 static inline u8 ib_bth_get_migreq(struct ib_other_headers *ohdr)
295 {
296         return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_M_SHIFT) &
297                     IB_BTH_M_MASK);
298 }
299 
300 static inline u8 ib_bth_get_se(struct ib_other_headers *ohdr)
301 {
302         return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_SE_SHIFT) &
303                     IB_BTH_SE_MASK);
304 }
305 
306 static inline u32 ib_bth_get_psn(struct ib_other_headers *ohdr)
307 {
308         return (u32)(be32_to_cpu(ohdr->bth[2]));
309 }
310 
311 static inline u32 ib_bth_get_qpn(struct ib_other_headers *ohdr)
312 {
313         return (u32)((be32_to_cpu(ohdr->bth[1])) & IB_QPN_MASK);
314 }
315 
316 static inline bool ib_bth_get_becn(struct ib_other_headers *ohdr)
317 {
318         return (ohdr->bth[1]) & cpu_to_be32(IB_BECN_SMASK);
319 }
320 
321 static inline bool ib_bth_get_fecn(struct ib_other_headers *ohdr)
322 {
323         return (ohdr->bth[1]) & cpu_to_be32(IB_FECN_SMASK);
324 }
325 
326 static inline u8 ib_bth_get_tver(struct ib_other_headers *ohdr)
327 {
328         return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_TVER_SHIFT)  &
329                     IB_BTH_TVER_MASK);
330 }
331 
332 static inline bool ib_bth_is_solicited(struct ib_other_headers *ohdr)
333 {
334         return ohdr->bth[0] & cpu_to_be32(IB_BTH_SOLICITED);
335 }
336 
337 static inline bool ib_bth_is_migration(struct ib_other_headers *ohdr)
338 {
339         return ohdr->bth[0] & cpu_to_be32(IB_BTH_MIG_REQ);
340 }
341 #endif                          /* IB_HDRS_H */
342 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp