2 * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
3 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #ifndef _IPATH_COMMON_H
35 #define _IPATH_COMMON_H
38 * This file contains defines, structures, etc. that are used
39 * to communicate between kernel and user code.
43 /* This is the IEEE-assigned OUI for QLogic Inc. InfiniPath */
44 #define IPATH_SRC_OUI_1 0x00
45 #define IPATH_SRC_OUI_2 0x11
46 #define IPATH_SRC_OUI_3 0x75
48 /* version of protocol header (known to chip also). In the long run,
49 * we should be able to generate and accept a range of version numbers;
50 * for now we only accept one, and it's compiled in.
52 #define IPS_PROTO_VERSION 2
55 * These are compile time constants that you may want to enable or disable
56 * if you are trying to debug problems with code or performance.
57 * IPATH_VERBOSE_TRACING define as 1 if you want additional tracing in
59 * IPATH_TRACE_REGWRITES define as 1 if you want register writes to be
60 * traced in faspath code
61 * _IPATH_TRACING define as 0 if you want to remove all tracing in a
63 * _IPATH_DEBUGGING define as 0 if you want to remove debug prints
67 * The value in the BTH QP field that InfiniPath uses to differentiate
68 * an infinipath protocol IB packet vs standard IB transport
70 #define IPATH_KD_QP 0x656b79
73 * valid states passed to ipath_set_linkstate() user call
75 #define IPATH_IB_LINKDOWN 0
76 #define IPATH_IB_LINKARM 1
77 #define IPATH_IB_LINKACTIVE 2
78 #define IPATH_IB_LINKINIT 3
79 #define IPATH_IB_LINKDOWN_SLEEP 4
80 #define IPATH_IB_LINKDOWN_DISABLE 5
81 #define IPATH_IB_LINK_LOOPBACK 6 /* enable local loopback */
82 #define IPATH_IB_LINK_EXTERNAL 7 /* normal, disable local loopback */
85 * stats maintained by the driver. For now, at least, this is global
86 * to all minor devices.
88 struct infinipath_stats {
89 /* number of interrupts taken */
91 /* number of interrupts for errors */
93 /* number of errors from chip (not incl. packet errors or CRC) */
95 /* number of packet errors from chip other than CRC */
97 /* number of packets with CRC errors (ICRC and VCRC) */
99 /* number of hardware errors reported (parity, etc.) */
101 /* number of times IB link changed state unexpectedly */
103 /* kernel receive interrupts that didn't read intstat */
104 __u64 sps_fastrcvint;
105 /* number of kernel (port0) packets received */
107 /* number of "ethernet" packets sent by driver */
108 __u64 sps_ether_spkts;
109 /* number of "ethernet" packets received by driver */
110 __u64 sps_ether_rpkts;
111 /* number of SMA packets sent by driver. Obsolete. */
113 /* number of SMA packets received by driver. Obsolete. */
115 /* number of times all ports rcvhdrq was full and packet dropped */
117 /* number of times all ports egrtid was full and packet dropped */
120 * number of times we tried to send from driver, but no pio buffers
124 /* number of ports currently open */
126 /* list of pkeys (other than default) accepted (0 means not set) */
128 __u16 sps_unused16[4]; /* available; maintaining compatible layout */
129 /* number of user ports per chip (not IB ports) */
131 /* not our interrupt, or already handled */
133 /* max number of packets handled per receive call */
134 __u32 sps_maxpkts_call;
135 /* avg number of packets handled per receive call */
136 __u32 sps_avgpkts_call;
137 /* total number of pages locked */
139 /* total number of pages unlocked */
140 __u64 sps_pageunlocks;
142 * Number of packets dropped in kernel other than errors (ether
143 * packets if ipath not configured, etc.)
146 __u64 sps_txeparity; /* PIO buffer parity error, recovered */
147 /* pad for future growth */
152 * These are the status bits readable (in ascii form, 64bit value)
153 * from the "status" sysfs file.
155 #define IPATH_STATUS_INITTED 0x1 /* basic initialization done */
156 #define IPATH_STATUS_DISABLED 0x2 /* hardware disabled */
157 /* Device has been disabled via admin request */
158 #define IPATH_STATUS_ADMIN_DISABLED 0x4
159 /* Chip has been found and initted */
160 #define IPATH_STATUS_CHIP_PRESENT 0x20
161 /* IB link is at ACTIVE, usable for data traffic */
162 #define IPATH_STATUS_IB_READY 0x40
163 /* link is configured, LID, MTU, etc. have been set */
164 #define IPATH_STATUS_IB_CONF 0x80
165 /* no link established, probably no cable */
166 #define IPATH_STATUS_IB_NOCABLE 0x100
167 /* A Fatal hardware error has occurred. */
168 #define IPATH_STATUS_HWERROR 0x200
171 * The list of usermode accessible registers. Also see Reg_* later in file.
173 typedef enum _ipath_ureg {
174 /* (RO) DMA RcvHdr to be used next. */
176 /* (RW) RcvHdr entry to be processed next by host. */
178 /* (RO) Index of next Eager index to use. */
179 ur_rcvegrindextail = 2,
180 /* (RW) Eager TID to be processed next */
181 ur_rcvegrindexhead = 3,
182 /* For internal use only; max register number. */
186 /* bit values for spi_runtime_flags */
187 #define IPATH_RUNTIME_HT 0x1
188 #define IPATH_RUNTIME_PCIE 0x2
189 #define IPATH_RUNTIME_FORCE_WC_ORDER 0x4
190 #define IPATH_RUNTIME_RCVHDR_COPY 0x8
191 #define IPATH_RUNTIME_MASTER 0x10
192 #define IPATH_RUNTIME_PBC_REWRITE 0x20
193 #define IPATH_RUNTIME_LOOSE_DMA_ALIGN 0x40
196 * This structure is returned by ipath_userinit() immediately after
197 * open to get implementation-specific info, and info specific to this
200 * This struct must have explict pad fields where type sizes
201 * may result in different alignments between 32 and 64 bit
202 * programs, since the 64 bit * bit kernel requires the user code
203 * to have matching offsets
205 struct ipath_base_info {
206 /* version of hardware, for feature checking. */
207 __u32 spi_hw_version;
208 /* version of software, for feature checking. */
209 __u32 spi_sw_version;
210 /* InfiniPath port assigned, goes into sent packets */
214 * IB MTU, packets IB data must be less than this.
215 * The MTU is in bytes, and will be a multiple of 4 bytes.
219 * Size of a PIO buffer. Any given packet's total size must be less
220 * than this (in words). Included is the starting control word, so
221 * if 513 is returned, then total pkt size is 512 words or less.
224 /* size of the TID cache in infinipath, in entries */
226 /* size of the TID Eager list in infinipath, in entries */
228 /* size of a single receive header queue entry in words. */
229 __u32 spi_rcvhdrent_size;
231 * Count of receive header queue entries allocated.
232 * This may be less than the spu_rcvhdrcnt passed in!.
234 __u32 spi_rcvhdr_cnt;
236 /* per-chip and other runtime features bitmap (IPATH_RUNTIME_*) */
237 __u32 spi_runtime_flags;
239 /* address where receive buffer queue is mapped into */
240 __u64 spi_rcvhdr_base;
244 /* base address of eager TID receive buffers. */
245 __u64 spi_rcv_egrbufs;
247 /* Allocated by initialization code, not by protocol. */
250 * Size of each TID buffer in host memory, starting at
251 * spi_rcv_egrbufs. The buffers are virtually contiguous.
253 __u32 spi_rcv_egrbufsize;
255 * The special QP (queue pair) value that identifies an infinipath
256 * protocol packet from standard IB packets. More, probably much
262 * User register base for init code, not to be used directly by
263 * protocol or applications.
265 __u64 __spi_uregbase;
267 * Maximum buffer size in bytes that can be used in a single TID
268 * entry (assuming the buffer is aligned to this boundary). This is
269 * the minimum of what the hardware and software support Guaranteed
270 * to be a power of 2.
272 __u32 spi_tid_maxsize;
274 * alignment of each pio send buffer (byte count
275 * to add to spi_piobufbase to get to second buffer)
279 * The index of the first pio buffer available to this process;
280 * needed to do lookup in spi_pioavailaddr; not added to
284 /* number of buffers mapped for this process */
288 * Base address of writeonly pio buffers for this process.
289 * Each buffer has spi_piosize words, and is aligned on spi_pioalign
290 * boundaries. spi_piocnt buffers are mapped from this address
292 __u64 spi_piobufbase;
295 * Base address of readonly memory copy of the pioavail registers.
296 * There are 2 bits for each buffer.
298 __u64 spi_pioavailaddr;
301 * Address where driver updates a copy of the interface and driver
302 * status (IPATH_STATUS_*) as a 64 bit value. It's followed by a
303 * string indicating hardware error, if there was one.
307 /* number of chip ports available to user processes */
309 /* unit number of chip we are using */
311 /* num bufs in each contiguous set */
312 __u32 spi_rcv_egrperchunk;
313 /* size in bytes of each contiguous set */
314 __u32 spi_rcv_egrchunksize;
315 /* total size of mmap to cover full rcvegrbuffers */
316 __u32 spi_rcv_egrbuftotlen;
317 __u32 spi_filler_for_align;
318 /* address of readonly memory copy of the rcvhdrq tail register. */
319 __u64 spi_rcvhdr_tailaddr;
321 /* shared memory pages for subports if port is shared */
322 __u64 spi_subport_uregbase;
323 __u64 spi_subport_rcvegrbuf;
324 __u64 spi_subport_rcvhdr_base;
326 /* shared memory page for hardware port if it is shared */
327 __u64 spi_port_uregbase;
328 __u64 spi_port_rcvegrbuf;
329 __u64 spi_port_rcvhdr_base;
330 __u64 spi_port_rcvhdr_tailaddr;
332 } __attribute__ ((aligned(8)));
336 * This version number is given to the driver by the user code during
337 * initialization in the spu_userversion field of ipath_user_info, so
338 * the driver can check for compatibility with user code.
340 * The major version changes when data structures
341 * change in an incompatible way. The driver must be the same or higher
342 * for initialization to succeed. In some cases, a higher version
343 * driver will not interoperate with older software, and initialization
344 * will return an error.
346 #define IPATH_USER_SWMAJOR 1
349 * Minor version differences are always compatible
350 * a within a major version, however if user software is larger
351 * than driver software, some new features and/or structure fields
352 * may not be implemented; the user code must deal with this if it
353 * cares, or it must abort after initialization reports the difference.
355 #define IPATH_USER_SWMINOR 4
357 #define IPATH_USER_SWVERSION ((IPATH_USER_SWMAJOR<<16) | IPATH_USER_SWMINOR)
359 #define IPATH_KERN_TYPE 0
362 * Similarly, this is the kernel version going back to the user. It's
363 * slightly different, in that we want to tell if the driver was built as
364 * part of a QLogic release, or from the driver from openfabrics.org,
365 * kernel.org, or a standard distribution, for support reasons.
366 * The high bit is 0 for non-QLogic and 1 for QLogic-built/supplied.
368 * It's returned by the driver to the user code during initialization in the
369 * spi_sw_version field of ipath_base_info, so the user code can in turn
370 * check for compatibility with the kernel.
372 #define IPATH_KERN_SWVERSION ((IPATH_KERN_TYPE<<31) | IPATH_USER_SWVERSION)
375 * This structure is passed to ipath_userinit() to tell the driver where
376 * user code buffers are, sizes, etc. The offsets and sizes of the
377 * fields must remain unchanged, for binary compatibility. It can
378 * be extended, if userversion is changed so user code can tell, if needed
380 struct ipath_user_info {
382 * version of user software, to detect compatibility issues.
383 * Should be set to IPATH_USER_SWVERSION.
385 __u32 spu_userversion;
387 /* desired number of receive header queue entries */
390 /* size of struct base_info to write to */
391 __u32 spu_base_info_size;
394 * number of words in KD protocol header
395 * This tells InfiniPath how many words to copy to rcvhdrq. If 0,
396 * kernel uses a default. Once set, attempts to set any other value
397 * are an error (EAGAIN) until driver is reloaded.
399 __u32 spu_rcvhdrsize;
402 * If two or more processes wish to share a port, each process
403 * must set the spu_subport_cnt and spu_subport_id to the same
404 * values. The only restriction on the spu_subport_id is that
405 * it be unique for a given node.
407 __u16 spu_subport_cnt;
408 __u16 spu_subport_id;
410 __u32 spu_unused; /* kept for compatible layout */
413 * address of struct base_info to write to
417 } __attribute__ ((aligned(8)));
421 #define IPATH_CMD_MIN 16
423 #define __IPATH_CMD_USER_INIT 16 /* old set up userspace (for old user code) */
424 #define IPATH_CMD_PORT_INFO 17 /* find out what resources we got */
425 #define IPATH_CMD_RECV_CTRL 18 /* control receipt of packets */
426 #define IPATH_CMD_TID_UPDATE 19 /* update expected TID entries */
427 #define IPATH_CMD_TID_FREE 20 /* free expected TID entries */
428 #define IPATH_CMD_SET_PART_KEY 21 /* add partition key */
429 #define __IPATH_CMD_SLAVE_INFO 22 /* return info on slave processes (for old user code) */
430 #define IPATH_CMD_ASSIGN_PORT 23 /* allocate HCA and port */
431 #define IPATH_CMD_USER_INIT 24 /* set up userspace */
433 #define IPATH_CMD_MAX 24
435 struct ipath_port_info {
436 __u32 num_active; /* number of active units */
437 __u32 unit; /* unit (chip) assigned to caller */
438 __u16 port; /* port on unit assigned to caller */
439 __u16 subport; /* subport on unit assigned to caller */
440 __u16 num_ports; /* number of ports available on unit */
441 __u16 num_subports; /* number of subports opened on port */
444 struct ipath_tid_info {
446 /* make structure same size in 32 and 64 bit */
448 /* virtual address of first page in transfer */
450 /* pointer (same size 32/64 bit) to __u16 tid array */
454 * pointer (same size 32/64 bit) to bitmap of TIDs used
455 * for this call; checked for being large enough at open
461 __u32 type; /* command type */
463 struct ipath_tid_info tid_info;
464 struct ipath_user_info user_info;
465 /* address in userspace of struct ipath_port_info to
468 /* enable/disable receipt of packets */
470 /* partition key to set */
472 /* user address of __u32 bitmask of active slaves */
473 __u64 slave_mask_addr;
478 /* Pointer to data, but same size 32 and 64 bit */
482 * Length of data; don't need 64 bits, but want
483 * ipath_sendpkt to remain same size as before 32 bit changes, so...
489 * Describes a single packet for send. Each packet can have one or more
490 * buffers, but the total length (exclusive of IB headers) must be less
491 * than the MTU, and if using the PIO method, entire packet length,
492 * including IB headers, must be less than the ipath_piosize value (words).
493 * Use of this necessitates including sys/uio.h
495 struct __ipath_sendpkt {
496 __u32 sps_flags; /* flags for packet (TBD) */
497 __u32 sps_cnt; /* number of entries to use in sps_iov */
498 /* array of iov's describing packet. TEMPORARY */
499 struct ipath_iovec sps_iov[4];
502 /* Passed into diag data special file's ->write method. */
503 struct ipath_diag_pkt {
510 * Data layout in I2C flash (for GUID, etc.)
511 * All fields are little-endian binary unless otherwise stated
513 #define IPATH_FLASH_VERSION 2
515 /* flash layout version (IPATH_FLASH_VERSION) */
517 /* checksum protecting if_length bytes */
520 * valid length (in use, protected by if_csum), including
521 * if_fversion and if_csum themselves)
524 /* the GUID, in network order */
526 /* number of GUIDs to use, starting from if_guid */
528 /* the (last 10 characters of) board serial number, in ASCII */
530 /* board mfg date (YYYYMMDD ASCII) */
532 /* last board rework/test date (YYYYMMDD ASCII) */
534 /* logging of error counts, TBD */
536 /* powered on hours, updated at driver unload */
537 __u8 if_powerhour[2];
538 /* ASCII free-form comment field */
540 /* Backwards compatible prefix for longer QLogic Serial Numbers */
542 /* 82 bytes used, min flash size is 128 bytes */
547 * These are the counters implemented in the chip, and are listed in order.
548 * The InterCaps naming is taken straight from the chip spec.
550 struct infinipath_counters {
552 __u64 LBFlowStallCnt;
554 __u64 TxUnsupVLErrCnt;
559 __u64 TxMaxMinLenErrCnt;
561 __u64 TxFlowStallCnt;
562 __u64 TxDroppedPktCnt;
563 __u64 RxDroppedPktCnt;
568 __u64 RxMaxMinLenErrCnt;
571 __u64 RxFlowCtrlErrCnt;
572 __u64 RxBadFormatCnt;
573 __u64 RxLinkProblemCnt;
577 __u64 RxTIDFullErrCnt;
578 __u64 RxTIDValidErrCnt;
579 __u64 RxPKeyMismatchCnt;
580 __u64 RxP0HdrEgrOvflCnt;
581 __u64 RxP1HdrEgrOvflCnt;
582 __u64 RxP2HdrEgrOvflCnt;
583 __u64 RxP3HdrEgrOvflCnt;
584 __u64 RxP4HdrEgrOvflCnt;
585 __u64 RxP5HdrEgrOvflCnt;
586 __u64 RxP6HdrEgrOvflCnt;
587 __u64 RxP7HdrEgrOvflCnt;
588 __u64 RxP8HdrEgrOvflCnt;
591 __u64 IBStatusChangeCnt;
592 __u64 IBLinkErrRecoveryCnt;
593 __u64 IBLinkDownedCnt;
594 __u64 IBSymbolErrCnt;
598 * The next set of defines are for packet headers, and chip register
599 * and memory bits that are visible to and/or used by user-mode software
600 * The other bits that are used only by the driver or diags are in
604 /* RcvHdrFlags bits */
605 #define INFINIPATH_RHF_LENGTH_MASK 0x7FF
606 #define INFINIPATH_RHF_LENGTH_SHIFT 0
607 #define INFINIPATH_RHF_RCVTYPE_MASK 0x7
608 #define INFINIPATH_RHF_RCVTYPE_SHIFT 11
609 #define INFINIPATH_RHF_EGRINDEX_MASK 0x7FF
610 #define INFINIPATH_RHF_EGRINDEX_SHIFT 16
611 #define INFINIPATH_RHF_H_ICRCERR 0x80000000
612 #define INFINIPATH_RHF_H_VCRCERR 0x40000000
613 #define INFINIPATH_RHF_H_PARITYERR 0x20000000
614 #define INFINIPATH_RHF_H_LENERR 0x10000000
615 #define INFINIPATH_RHF_H_MTUERR 0x08000000
616 #define INFINIPATH_RHF_H_IHDRERR 0x04000000
617 #define INFINIPATH_RHF_H_TIDERR 0x02000000
618 #define INFINIPATH_RHF_H_MKERR 0x01000000
619 #define INFINIPATH_RHF_H_IBERR 0x00800000
620 #define INFINIPATH_RHF_L_SWA 0x00008000
621 #define INFINIPATH_RHF_L_SWB 0x00004000
623 /* infinipath header fields */
624 #define INFINIPATH_I_VERS_MASK 0xF
625 #define INFINIPATH_I_VERS_SHIFT 28
626 #define INFINIPATH_I_PORT_MASK 0xF
627 #define INFINIPATH_I_PORT_SHIFT 24
628 #define INFINIPATH_I_TID_MASK 0x7FF
629 #define INFINIPATH_I_TID_SHIFT 13
630 #define INFINIPATH_I_OFFSET_MASK 0x1FFF
631 #define INFINIPATH_I_OFFSET_SHIFT 0
633 /* K_PktFlags bits */
634 #define INFINIPATH_KPF_INTR 0x1
635 #define INFINIPATH_KPF_SUBPORT_MASK 0x3
636 #define INFINIPATH_KPF_SUBPORT_SHIFT 1
638 #define INFINIPATH_MAX_SUBPORT 4
640 /* SendPIO per-buffer control */
641 #define INFINIPATH_SP_TEST 0x40
642 #define INFINIPATH_SP_TESTEBP 0x20
644 /* SendPIOAvail bits */
645 #define INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT 1
646 #define INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT 0
648 /* infinipath header format */
649 struct ipath_header {
651 * Version - 4 bits, Port - 4 bits, TID - 10 bits and Offset -
652 * 14 bits before ECO change ~28 Dec 03. After that, Vers 4,
653 * Port 4, TID 11, offset 13.
655 __le32 ver_port_tid_offset;
660 /* infinipath user message header format.
661 * This structure contains the first 4 fields common to all protocols
662 * that employ infinipath.
664 struct ipath_message_header {
667 /* fields below this point are in host byte order */
668 struct ipath_header iph;
672 /* infinipath ethernet header format */
673 struct ether_header {
676 struct ipath_header iph;
684 /* MUST be of word size due to PIO write requirements */
689 __u8 unused[2]; /* currently unused */
693 /* IB - LRH header consts */
694 #define IPATH_LRH_GRH 0x0003 /* 1. word of IB LRH - next header: GRH */
695 #define IPATH_LRH_BTH 0x0002 /* 1. word of IB LRH - next header: BTH */
698 #define SIZE_OF_CRC 1
700 #define IPATH_DEFAULT_P_KEY 0xFFFF
701 #define IPATH_PERMISSIVE_LID 0xFFFF
702 #define IPATH_AETH_CREDIT_SHIFT 24
703 #define IPATH_AETH_CREDIT_MASK 0x1F
704 #define IPATH_AETH_CREDIT_INVAL 0x1F
705 #define IPATH_PSN_MASK 0xFFFFFF
706 #define IPATH_MSN_MASK 0xFFFFFF
707 #define IPATH_QPN_MASK 0xFFFFFF
708 #define IPATH_MULTICAST_LID_BASE 0xC000
709 #define IPATH_MULTICAST_QPN 0xFFFFFF
711 /* Receive Header Queue: receive type (from infinipath) */
712 #define RCVHQ_RCV_TYPE_EXPECTED 0
713 #define RCVHQ_RCV_TYPE_EAGER 1
714 #define RCVHQ_RCV_TYPE_NON_KD 2
715 #define RCVHQ_RCV_TYPE_ERROR 3
718 /* sub OpCodes - ith4x */
719 #define IPATH_ITH4X_OPCODE_ENCAP 0x81
720 #define IPATH_ITH4X_OPCODE_LID_ARP 0x82
722 #define IPATH_HEADER_QUEUE_WORDS 9
724 /* functions for extracting fields from rcvhdrq entries for the driver.
726 static inline __u32 ipath_hdrget_err_flags(const __le32 * rbuf)
728 return __le32_to_cpu(rbuf[1]);
731 static inline __u32 ipath_hdrget_rcv_type(const __le32 * rbuf)
733 return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_RCVTYPE_SHIFT)
734 & INFINIPATH_RHF_RCVTYPE_MASK;
737 static inline __u32 ipath_hdrget_length_in_bytes(const __le32 * rbuf)
739 return ((__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_LENGTH_SHIFT)
740 & INFINIPATH_RHF_LENGTH_MASK) << 2;
743 static inline __u32 ipath_hdrget_index(const __le32 * rbuf)
745 return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_EGRINDEX_SHIFT)
746 & INFINIPATH_RHF_EGRINDEX_MASK;
749 static inline __u32 ipath_hdrget_ipath_ver(__le32 hdrword)
751 return (__le32_to_cpu(hdrword) >> INFINIPATH_I_VERS_SHIFT)
752 & INFINIPATH_I_VERS_MASK;
755 #endif /* _IPATH_COMMON_H */