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usr /
src /
linux-headers-4.15.0-64 /
include /
linux /
[ HOME SHELL ]
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amba
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drwxr-xr-x
avf
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byteorder
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can
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ceph
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clk
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platform_data
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rtc
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soc
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spi
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ssb
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sunrpc
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ulpi
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unaligned
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usb
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uwb
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drwxr-xr-x
wimax
[ DIR ]
drwxr-xr-x
8250_pci.h
1.01
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a.out.h
354
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acct.h
2.49
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acpi.h
37.04
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acpi_dma.h
3.22
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acpi_iort.h
2.15
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acpi_pmtmr.h
674
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adb.h
1.79
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adfs_fs.h
574
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aer.h
1.71
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agp_backend.h
3.45
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agpgart.h
3.82
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ahci-remap.h
607
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ahci_platform.h
1.55
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aio.h
673
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alarmtimer.h
1.83
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altera_jtaguart.h
379
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altera_uart.h
397
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amd-iommu.h
6.78
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amifd.h
1.99
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amifdreg.h
2.65
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anon_inodes.h
494
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apm-emulation.h
1.54
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apm_bios.h
2.68
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apple-gmux.h
1.42
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apple_bl.h
498
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arch_topology.h
840
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arm-cci.h
2.01
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arm-smccc.h
10.54
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arm_sdei.h
2.33
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asn1.h
1.99
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asn1_ber_bytecode.h
2.72
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asn1_decoder.h
675
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assoc_array.h
3.07
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assoc_array_priv.h
5.49
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async.h
1.65
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async_tx.h
6.81
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ata.h
33.18
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ata_platform.h
729
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atalk.h
4.36
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ath9k_platform.h
1.44
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atm.h
287
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atm_suni.h
253
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atm_tcp.h
511
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atmdev.h
10.21
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atmel-mci.h
1.4
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atmel-ssc.h
9.74
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atmel_pdc.h
1.47
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atmel_tc.h
11.33
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atomic.h
30.33
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attribute_container.h
2.47
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audit.h
17.22
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auto_dev-ioctl.h
454
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auto_fs.h
436
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auxvec.h
304
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average.h
2.42
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b1pcmcia.h
666
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backing-dev-defs.h
8.53
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backing-dev.h
13.58
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backlight.h
5.3
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badblocks.h
2.14
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balloon_compaction.h
7.2
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bcd.h
559
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bch.h
2.6
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bcm47xx_nvram.h
1.22
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bcm47xx_sprom.h
600
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bcm47xx_wdt.h
555
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bcm963xx_nvram.h
2.96
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bcm963xx_tag.h
3.6
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bfin_mac.h
559
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binfmts.h
4.77
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bio.h
20.17
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bit_spinlock.h
2.3
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bitfield.h
3.2
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bitmap.h
16.2
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bitops.h
6.61
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bitrev.h
2.53
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bits.h
833
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blk-cgroup.h
22.2
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blk-mq-pci.h
247
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blk-mq-rdma.h
232
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blk-mq-virtio.h
288
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blk-mq.h
9.06
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blk_types.h
9.61
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blkdev.h
58.17
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blkpg.h
436
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blktrace_api.h
3.55
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blockgroup_lock.h
810
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bma150.h
1.89
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bootmem.h
11.7
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bottom_half.h
803
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bpf-cgroup.h
4.53
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bpf.h
18.31
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bpf_trace.h
196
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bpf_types.h
1.88
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bpf_verifier.h
6.71
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brcmphy.h
9.88
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bsearch.h
275
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bsg-lib.h
2.13
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bsg.h
773
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btree-128.h
2.67
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btree-type.h
3.9
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btree.h
6.83
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btrfs.h
145
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buffer_head.h
13.22
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bug.h
1.85
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build_bug.h
3.04
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bvec.h
3.42
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c2port.h
1.49
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cache.h
2.13
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cacheinfo.h
3.7
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capability.h
7.59
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cb710.h
5.69
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cciss_ioctl.h
1.03
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ccp.h
18.24
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cdev.h
845
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cdrom.h
8.75
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cfag12864b.h
2.1
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cgroup-defs.h
25.23
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cgroup.h
25.82
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cgroup_rdma.h
1.33
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cgroup_subsys.h
1.17
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circ_buf.h
1.08
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cleancache.h
3.89
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clk-provider.h
34.29
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clk.h
19.38
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clkdev.h
1.54
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clock_cooling.h
2.06
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clockchips.h
7.27
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clocksource.h
8.31
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cm4000_cs.h
199
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cma.h
1.19
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cmdline-parser.h
1.21
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cn_proc.h
1.85
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cnt32_to_63.h
3.6
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coda.h
2.16
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coda_psdev.h
2.98
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compaction.h
7.1
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compat.h
27.45
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compiler-clang.h
1.31
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compiler-gcc.h
12.33
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compiler-intel.h
1.3
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compiler.h
9.81
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compiler_types.h
7.5
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completion.h
4.05
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component.h
1.37
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concap.h
3.69
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configfs.h
9.22
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connector.h
2.43
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console.h
6.7
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console_struct.h
6.81
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consolemap.h
1.04
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container.h
668
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context_tracking.h
4.43
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context_tracking_state.h
1.39
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cordic.h
1.75
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coredump.h
783
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coresight-pmu.h
1.44
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coresight-stm.h
152
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coresight.h
9.86
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count_zeros.h
1.62
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cper.h
16.11
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cpu.h
6.67
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cpu_cooling.h
3.59
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cpu_pm.h
2.78
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cpu_rmap.h
1.86
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cpufeature.h
1.84
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cpufreq.h
27.93
KB
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cpuhotplug.h
11.98
KB
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cpuidle.h
8.68
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cpumask.h
25.38
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cpuset.h
7.07
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crash_core.h
2.99
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crash_dump.h
2.98
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crc-ccitt.h
369
B
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crc-itu-t.h
613
B
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crc-t10dif.h
415
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crc16.h
622
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crc32.h
2.83
KB
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crc32c.h
293
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crc4.h
192
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crc7.h
316
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crc8.h
3.65
KB
-rw-r--r--
cred.h
12.1
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crypto.h
55.52
KB
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cryptohash.h
319
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cs5535.h
6.28
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ctype.h
1.75
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cuda.h
501
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cyclades.h
10.36
KB
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davinci_emac.h
1.12
KB
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dax.h
3.65
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dca.h
2.63
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dcache.h
18.78
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dccp.h
10.73
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dcookies.h
1.3
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debug_locks.h
1.51
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debugfs.h
10.52
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debugobjects.h
3.89
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delay.h
1.83
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delayacct.h
5.17
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delayed_call.h
709
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dell-led.h
128
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devcoredump.h
2.78
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devfreq-event.h
5.64
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devfreq.h
12.53
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devfreq_cooling.h
3.52
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device-mapper.h
17.83
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device.h
55.43
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device_cgroup.h
1.86
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devpts_fs.h
1.28
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digsig.h
1.35
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dio.h
10.97
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dirent.h
216
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dlm.h
6.01
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dlm_plock.h
678
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dm-dirty-log.h
3.94
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dm-io.h
1.93
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dm-kcopyd.h
2.88
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dm-region-hash.h
3.11
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dm9000.h
1.11
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dma-buf.h
14.7
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dma-contiguous.h
4.48
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dma-debug.h
5.61
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dma-direction.h
338
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dma-fence-array.h
2.49
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dma-fence.h
17.29
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dma-iommu.h
3.62
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dma-mapping.h
24.63
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dma_remapping.h
1.46
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dmaengine.h
45.91
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dmapool.h
1.09
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dmar.h
7.94
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dmi.h
4.08
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dnotify.h
1.02
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dns_resolver.h
1.31
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dqblk_qtree.h
2.19
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dqblk_v1.h
327
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dqblk_v2.h
406
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drbd.h
10.67
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drbd_genl.h
21.49
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drbd_genl_api.h
1.77
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drbd_limits.h
7.82
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ds2782_battery.h
158
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dtlk.h
3.5
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dw_apb_timer.h
1.7
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dynamic_debug.h
5.08
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dynamic_queue_limits.h
3.7
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earlycpio.h
359
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ecryptfs.h
3.82
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edac.h
20.22
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edd.h
1.43
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edma.h
807
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eeprom_93cx6.h
2.94
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eeprom_93xx46.h
776
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efi-bgrt.h
644
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efi.h
47.77
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efs_vh.h
1.55
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eisa.h
2.96
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elevator.h
9.26
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elf-fdpic.h
2.18
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elf-randomize.h
583
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elf.h
1.53
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elfcore-compat.h
1.24
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elfcore.h
2.11
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elfnote.h
3.54
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enclosure.h
4.6
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err.h
1.55
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errno.h
1.34
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errqueue.h
524
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errseq.h
373
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etherdevice.h
15.67
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ethtool.h
17.3
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eventfd.h
2.1
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eventpoll.h
2.16
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evm.h
2.65
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export.h
3.88
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exportfs.h
7.45
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ext2_fs.h
967
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extable.h
999
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extcon-provider.h
4.33
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extcon.h
9.84
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f2fs_fs.h
17.51
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f75375s.h
541
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falloc.h
792
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fanotify.h
245
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fault-inject.h
1.87
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fb.h
28.87
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fbcon.h
281
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fcdevice.h
988
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fcntl.h
1.27
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fd.h
490
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fddidevice.h
1.02
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fdtable.h
3.28
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fec.h
609
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file.h
2.06
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filter.h
26.43
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fips.h
167
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firewire.h
13.4
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firmware-map.h
1.32
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firmware.h
2.34
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fixp-arith.h
4.41
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flat.h
1.61
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flex_array.h
4.31
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flex_proportions.h
2.81
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fmc-sdb.h
1.29
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fmc.h
9.65
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font.h
1.29
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frame.h
813
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freezer.h
8.67
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frontswap.h
2.87
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fs.h
110.29
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fs_enet_pd.h
3.38
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fs_pin.h
619
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fs_stack.h
811
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fs_struct.h
1.03
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fs_uart_pd.h
1.49
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fscache-cache.h
18.4
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fscache.h
27.54
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fscrypt.h
8.93
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fscrypt_notsupp.h
4.45
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fscrypt_supp.h
6.1
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fsi.h
2.37
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fsl-diu-fb.h
4.08
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fsl_devices.h
4.32
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fsl_hypervisor.h
2.76
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fsl_ifc.h
25.06
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fsldma.h
398
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fsnotify.h
7.43
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fsnotify_backend.h
16.66
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ftrace.h
29.86
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ftrace_irq.h
823
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futex.h
1.92
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fwnode.h
4.41
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gameport.h
5.56
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gcd.h
193
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genalloc.h
5.77
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genetlink.h
1.39
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genhd.h
22.73
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genl_magic_func.h
12.05
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genl_magic_struct.h
7.66
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getcpu.h
641
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gfp.h
22.47
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glob.h
256
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goldfish.h
605
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gpio-pxa.h
571
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gpio.h
5.67
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gpio_keys.h
1.63
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hardirq.h
1.95
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hash.h
3
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hashtable.h
6.63
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hdlc.h
3.33
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hdlcdrv.h
6.32
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hdmi.h
9.36
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hid-debug.h
2.07
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hid-roccat.h
688
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hid-sensor-hub.h
9.25
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hid-sensor-ids.h
7.27
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hid.h
34.55
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hiddev.h
2.07
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hidraw.h
1.49
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highmem.h
5.84
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highuid.h
3.12
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hil.h
18.42
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hil_mlc.h
5.13
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hippidevice.h
1.23
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hmm.h
18.19
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host1x.h
9.02
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hp_sdc.h
14.02
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hpet.h
2.55
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hrtimer.h
13.78
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htcpld.h
617
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huge_mm.h
10.1
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hugetlb.h
16.82
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hugetlb_cgroup.h
2.93
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hugetlb_inline.h
374
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hw_breakpoint.h
3.85
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hw_random.h
2.15
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hwmon-sysfs.h
1.98
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hwmon-vid.h
1.48
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hwmon.h
12.07
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hwspinlock.h
11.06
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hyperv.h
38.83
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hypervisor.h
400
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i2c-algo-bit.h
2.24
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i2c-algo-pca.h
2.54
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i2c-algo-pcf.h
1.88
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i2c-dev.h
1.03
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i2c-gpio.h
1.19
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i2c-mux-gpio.h
1.35
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i2c-mux.h
2.29
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i2c-ocores.h
757
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i2c-omap.h
1.21
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i2c-pca-platform.h
441
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i2c-pnx.h
923
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i2c-pxa.h
438
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i2c-smbus.h
1.94
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i2c-xiic.h
1.41
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i2c.h
30.84
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i7300_idle.h
1.95
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i8042.h
2.14
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i8253.h
809
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icmp.h
863
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icmpv6.h
1.29
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ide.h
46.29
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idr.h
7.81
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ieee80211.h
80.94
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ieee802154.h
11.5
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if_arp.h
1.81
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if_bridge.h
2.65
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if_eql.h
1.07
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if_ether.h
1.28
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if_fddi.h
3.44
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if_frad.h
2.87
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if_link.h
554
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if_ltalk.h
188
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if_macvlan.h
2.17
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if_phonet.h
319
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if_pppol2tp.h
727
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if_pppox.h
2.91
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if_tap.h
2.24
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if_team.h
7.65
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if_tun.h
1.14
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if_tunnel.h
409
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if_vlan.h
18.67
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igmp.h
4.15
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ihex.h
1.95
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ima.h
2.53
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imx-media.h
811
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in.h
2.43
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in6.h
1.85
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inet.h
2.8
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inet_diag.h
2.13
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inetdevice.h
8.12
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init.h
9.1
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init_ohci1394_dma.h
196
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init_task.h
7.84
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initrd.h
685
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inotify.h
696
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input-polldev.h
2.17
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input.h
18.81
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integrity.h
1.05
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intel-iommu.h
16.77
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intel-pti.h
1.56
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intel-svm.h
4.96
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interrupt.h
21.15
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interval_tree.h
831
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interval_tree_generic.h
8
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io-64-nonatomic-hi-lo.h
1.14
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io-64-nonatomic-lo-hi.h
1.14
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io-mapping.h
4.32
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io.h
5.76
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ioc3.h
3.14
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ioc4.h
5.78
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iocontext.h
4.74
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iomap.h
3.95
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iommu-common.h
1.41
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iommu-helper.h
950
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iommu.h
21.74
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iopoll.h
5.72
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ioport.h
10.74
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ioprio.h
1.96
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iova.h
7.03
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ip.h
1.07
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ipack.h
8.85
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ipc.h
695
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ipc_namespace.h
4.54
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ipmi-fru.h
3.64
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ipmi.h
11.44
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ipmi_smi.h
8.9
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ipv6.h
8.92
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ipv6_route.h
594
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irq.h
38.05
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irq_cpustat.h
949
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irq_poll.h
575
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irq_sim.h
1.16
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irq_work.h
1.3
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irqbypass.h
3.59
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irqchip.h
1.54
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irqdesc.h
8.15
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irqdomain.h
19.02
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irqflags.h
4.82
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irqhandler.h
362
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irqnr.h
856
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irqreturn.h
503
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isa.h
2.12
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isapnp.h
3.8
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iscsi_boot_sysfs.h
4.09
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iscsi_ibft.h
1.28
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isdn.h
22.99
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isdn_divertif.h
1.27
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isdn_ppp.h
6.64
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isdnif.h
19.26
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isicom.h
1.49
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jbd2.h
46.21
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jhash.h
4.62
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jiffies.h
15.4
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journal-head.h
2.87
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joystick.h
1.28
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jump_label.h
13.32
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jump_label_ratelimit.h
1.12
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jz4740-adc.h
1023
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jz4780-nemc.h
1.16
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kallsyms.h
3.59
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kasan-checks.h
441
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kasan.h
4.48
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kbd_diacr.h
198
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kbd_kern.h
3.84
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kbuild.h
380
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kconfig.h
2.53
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kcore.h
664
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kcov.h
802
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kd.h
211
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kdb.h
7.3
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kdebug.h
487
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kdev_t.h
1.7
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kern_levels.h
1.58
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kernel-page-flags.h
505
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kernel.h
31.25
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kernel_stat.h
2.5
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kernelcapi.h
4.45
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kernfs.h
16.86
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kexec.h
9.64
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key-type.h
6.17
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key.h
12.67
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keyboard.h
665
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kfifo.h
24.81
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kgdb.h
10.7
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khugepaged.h
2.24
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klist.h
1.88
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kmemleak.h
3.86
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kmod.h
1.71
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kmsg_dump.h
2.85
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kobj_map.h
545
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kobject.h
7.62
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kobject_ns.h
1.9
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kprobes.h
14.41
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kref.h
3.28
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ks0108.h
1.57
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ks8842.h
1.19
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ks8851_mll.h
1.04
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ksm.h
2.89
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kthread.h
6.6
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ktime.h
6.71
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kvm_host.h
35.37
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kvm_irqfd.h
2.39
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kvm_para.h
284
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kvm_types.h
1.59
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l2tp.h
261
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lapb.h
1.71
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latencytop.h
1.18
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lcd.h
4.19
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lcm.h
275
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led-class-flash.h
5.42
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led-lm3530.h
3.7
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leds-bd2802.h
642
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leds-lp3944.h
1.07
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leds-lp3952.h
2.5
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leds-pca9532.h
1.01
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leds-regulator.h
1.29
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leds-tca6507.h
1.02
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leds.h
13.67
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leds_pwm.h
407
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libata.h
64.51
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libfdt.h
244
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libfdt_env.h
396
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libgcc.h
1.07
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libnvdimm.h
7.16
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libps2.h
1.75
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license.h
374
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lightnvm.h
10.95
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linkage.h
2.64
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linux_logo.h
2.06
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lis3lv02d.h
5
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list.h
23.3
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list_bl.h
4.19
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list_lru.h
6.29
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list_nulls.h
3.42
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list_sort.h
277
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livepatch.h
6.94
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llc.h
749
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llist.h
9.15
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lockdep.h
18.61
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lockref.h
1.45
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log2.h
5.48
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logic_pio.h
3.18
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lp.h
2.76
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lru_cache.h
12.42
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lsm_audit.h
2.73
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lsm_hooks.h
88.01
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lz4.h
26.44
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lzo.h
1.37
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mISDNdsp.h
1.19
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mISDNhw.h
5.78
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mISDNif.h
14.91
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mailbox_client.h
1.79
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mailbox_controller.h
5.37
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maple.h
2.71
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marvell_phy.h
1.17
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math64.h
6.42
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max17040_battery.h
474
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mbcache.h
1.57
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mbus.h
3.09
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mc146818rtc.h
4.46
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mc6821.h
1.18
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mcb.h
3.88
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mdev.h
4.9
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mdio-bitbang.h
1.18
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mdio-mux.h
1021
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mdio.h
8.89
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mei_cl_bus.h
3.28
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mem_encrypt.h
1.21
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memblock.h
14.6
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memcontrol.h
28.26
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memory.h
4.52
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memory_hotplug.h
10.12
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mempolicy.h
7.44
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mempool.h
2.39
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memremap.h
7.15
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memstick.h
9.73
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mic_bus.h
3.2
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micrel_phy.h
1.42
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microchipphy.h
2.84
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migrate.h
10.02
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migrate_mode.h
758
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mii.h
8.74
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miscdevice.h
2.79
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mm-arch-hooks.h
679
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mm.h
85.2
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mm_inline.h
3.44
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mm_types.h
19.15
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mm_types_task.h
2.4
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mman.h
3.26
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mmdebug.h
1.88
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mmiotrace.h
3.05
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mmu_context.h
378
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mmu_notifier.h
15.84
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mmzone.h
39.68
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mnt_namespace.h
617
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mod_devicetable.h
19.1
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module.h
22.23
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moduleloader.h
2.72
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moduleparam.h
19.42
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mount.h
3.45
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mpage.h
761
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mpi.h
5.17
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mpls.h
394
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mpls_iptunnel.h
178
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mroute.h
4.71
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mroute6.h
3.27
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msdos_fs.h
273
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msg.h
1.02
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msi.h
11.58
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mutex.h
6.91
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mv643xx.h
52.4
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mv643xx_eth.h
1.95
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mv643xx_i2c.h
545
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mvebu-pmsu.h
520
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mxm-wmi.h
1.05
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n_r3964.h
4.06
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namei.h
3.41
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nd.h
5.71
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net.h
11.17
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netdev_features.h
9.39
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netdevice.h
139.26
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netfilter.h
11.74
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netfilter_bridge.h
1.82
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netfilter_defs.h
239
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netfilter_ingress.h
1.44
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netfilter_ipv4.h
424
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netfilter_ipv6.h
1.43
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netlink.h
6.87
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netpoll.h
2.69
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nfs.h
1.31
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nfs3.h
260
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nfs4.h
17.5
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nfs_fs.h
16.03
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nfs_fs_i.h
308
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nfs_fs_sb.h
8.81
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nfs_iostat.h
4.18
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nfs_page.h
5.89
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nfs_xdr.h
38.78
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nfsacl.h
1.15
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nl802154.h
4.23
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nls.h
3.08
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nmi.h
6.56
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node.h
3
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nodemask.h
16.9
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nospec.h
2.14
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notifier.h
7.72
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ns_common.h
235
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nsc_gpio.h
1.42
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nsproxy.h
2.48
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ntb.h
46.52
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ntb_transport.h
3.8
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nubus.h
4.13
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numa.h
292
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nvme-fc-driver.h
38.22
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nvme-fc.h
8.34
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nvme-rdma.h
2.44
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nvme.h
26.61
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nvmem-consumer.h
4.35
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nvmem-provider.h
1.52
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nvram.h
495
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of.h
40.35
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of_address.h
4.47
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of_device.h
3.04
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of_dma.h
2.45
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of_fdt.h
4.19
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of_gpio.h
4.39
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of_graph.h
3.56
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of_iommu.h
1
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of_irq.h
3.6
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of_mdio.h
2.98
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of_net.h
708
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of_pci.h
2.23
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of_pdt.h
1.4
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of_platform.h
4.1
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of_reserved_mem.h
2.35
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oid_registry.h
3.87
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olpc-ec.h
1.08
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omap-dma.h
10.5
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omap-dmaengine.h
583
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omap-gpmc.h
2.22
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omap-iommu.h
520
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omap-mailbox.h
777
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omapfb.h
1.22
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once.h
1.84
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oom.h
3.12
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openvswitch.h
844
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oprofile.h
6.1
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osq_lock.h
1.04
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overflow.h
6.6
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oxu210hp.h
197
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padata.h
6.02
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page-flags-layout.h
2.99
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page-flags.h
23.42
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page-isolation.h
1.9
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page_counter.h
1.46
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page_ext.h
1.89
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page_idle.h
2.62
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page_owner.h
2.3
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page_ref.h
4.99
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pageblock-flags.h
3.28
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pagemap.h
18.92
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pagevec.h
2.3
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parman.h
2.87
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parport.h
17.84
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parport_pc.h
6.56
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parser.h
1.04
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pata_arasan_cf_data.h
1.22
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patchkey.h
757
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path.h
572
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pch_dma.h
999
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pci-acpi.h
3.44
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pci-aspm.h
882
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pci-ats.h
1.39
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pci-dma-compat.h
4.41
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pci-dma.h
454
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pci-ecam.h
2.54
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pci-ep-cfs.h
1.09
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pci-epc.h
5.26
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pci-epf.h
4.83
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pci.h
81.38
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pci_hotplug.h
6.91
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pci_ids.h
119.4
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pcieport_if.h
2.35
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pda_power.h
1.12
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pe.h
15.6
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percpu-defs.h
18.17
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percpu-refcount.h
9.93
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percpu-rwsem.h
4.09
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percpu.h
5.02
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percpu_counter.h
4.26
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percpu_ida.h
2.32
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perf_event.h
38.74
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perf_regs.h
1.02
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personality.h
393
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pfn.h
666
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pfn_t.h
3.23
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phonet.h
1.12
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phy.h
31
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phy_fixed.h
1.64
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phy_led_triggers.h
1.46
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phylink.h
5.06
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pid.h
5.77
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pid_namespace.h
2.33
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pim.h
2.67
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pipe_fs_i.h
6.46
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pkeys.h
916
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pktcdvd.h
5.87
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pl320-ipc.h
758
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platform_device.h
12.43
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plist.h
8.69
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pm-trace.h
940
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pm.h
34.21
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pm2301_charger.h
1.68
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pm_clock.h
2.45
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pm_domain.h
9.03
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pm_opp.h
10.08
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pm_qos.h
8.51
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pm_runtime.h
8.52
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pm_wakeirq.h
1.31
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pm_wakeup.h
6.61
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pmbus.h
1.58
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pmu.h
2.34
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pnfs_osd_xdr.h
9.27
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pnp.h
15.4
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poison.h
2.66
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poll.h
3.19
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posix-clock.h
4.41
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posix-timers.h
3.55
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posix_acl.h
3.06
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posix_acl_xattr.h
1.58
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power_supply.h
13.41
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powercap.h
12.59
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ppp-comp.h
3.1
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ppp_channel.h
3.07
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ppp_defs.h
454
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pps-gpio.h
1.01
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pps_kernel.h
3.55
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pr.h
566
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preempt.h
9.33
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prefetch.h
1.54
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prime_numbers.h
1.35
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printk.h
15.24
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proc_fs.h
3.26
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proc_ns.h
2.44
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processor.h
2.14
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profile.h
2.68
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projid.h
2.34
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property.h
9.79
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psci.h
1.87
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pstore.h
7.58
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pstore_ram.h
2.89
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pti.h
240
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ptp_classify.h
2.89
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ptp_clock_kernel.h
8.39
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ptr_ring.h
16.29
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ptrace.h
14.77
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purgatory.h
589
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pvclock_gtod.h
548
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pwm.h
16.8
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pwm_backlight.h
740
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pxa168_eth.h
728
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pxa2xx_ssp.h
9.8
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qcom_scm.h
4.09
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qnx6_fs.h
3.27
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quicklist.h
2.13
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quota.h
18.86
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quotaops.h
10.02
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radix-tree.h
21.77
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raid_class.h
2.08
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ramfs.h
762
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random.h
5.07
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range.h
651
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ras.h
1.18
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ratelimit.h
2.63
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rational.h
639
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rbtree.h
5.36
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rbtree_augmented.h
8.67
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rbtree_latch.h
6.62
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rcu_node_tree.h
4.34
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rcu_segcblist.h
3.26
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rcu_sync.h
2.57
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rculist.h
23.53
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rculist_bl.h
4.36
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rculist_nulls.h
4.93
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rcupdate.h
32.58
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rcupdate_wait.h
1.63
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rcutiny.h
3.64
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rcutree.h
3.56
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rcuwait.h
1.82
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reboot-mode.h
600
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reboot.h
2.05
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reciprocal_div.h
1.01
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refcount.h
2.6
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regmap.h
42.34
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regset.h
15.08
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relay.h
8.84
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remoteproc.h
18.48
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reservation.h
8.12
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reset-controller.h
2.12
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reset.h
13.69
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resource.h
339
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resource_ext.h
2.22
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restart_block.h
1.11
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rfkill.h
9.89
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rhashtable.h
38.24
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ring_buffer.h
6.79
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rio.h
19.23
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rio_drv.h
14.71
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rio_ids.h
1.29
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rio_regs.h
19.27
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rmap.h
8.76
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rmi.h
12.13
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rndis.h
16.86
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rodata_test.h
559
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root_dev.h
579
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rpmsg.h
8.38
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rslib.h
2.99
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rtc.h
8.71
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rtmutex.h
3.47
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rtnetlink.h
4.27
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rtsx_common.h
1.44
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rtsx_pci.h
40.14
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rtsx_usb.h
15.95
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rwlock.h
4.35
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rwlock_api_smp.h
7.67
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rwlock_types.h
1.12
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rwsem-spinlock.h
1.58
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rwsem.h
6
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s3c_adc_battery.h
971
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sa11x0-dma.h
572
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sbitmap.h
13.56
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scatterlist.h
12.9
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scc.h
2.84
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sched.h
47.53
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sched_clock.h
661
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scif.h
58.85
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scpi_protocol.h
2.58
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screen_info.h
191
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sctp.h
21.92
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scx200.h
1.82
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scx200_gpio.h
2.38
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sdb.h
4.17
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sdla.h
6.9
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seccomp.h
2.66
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securebits.h
239
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security.h
47.85
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sed-opal.h
1.94
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seg6.h
121
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seg6_genl.h
136
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seg6_hmac.h
136
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seg6_iptunnel.h
148
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seg6_local.h
100
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selection.h
1.39
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selinux.h
910
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sem.h
2.02
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semaphore.h
1.36
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seq_buf.h
3.16
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seq_file.h
6.68
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seq_file_net.h
713
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seqlock.h
16
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seqno-fence.h
3.96
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serdev.h
9.48
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serial.h
630
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serial_8250.h
5.91
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serial_bcm63xx.h
4.73
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serial_core.h
16.38
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serial_max3100.h
1.39
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serial_pnx8xxx.h
2.61
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serial_s3c.h
9.24
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serial_sci.h
1.57
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serio.h
4.42
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set_memory.h
740
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sfi.h
5.75
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sfi_acpi.h
3.39
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sfp.h
10.4
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sh_clk.h
5.96
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sh_dma.h
3.61
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sh_eth.h
417
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sh_intc.h
3.42
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sh_timer.h
172
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shdma-base.h
4.41
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shm.h
1.56
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shmem_fs.h
5.33
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shrinker.h
2.82
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signal.h
12.22
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Code Editor : nvme-fc-driver.h
/* * Copyright (c) 2016, Avago Technologies * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. */ #ifndef _NVME_FC_DRIVER_H #define _NVME_FC_DRIVER_H 1 /* * ********************** LLDD FC-NVME Host API ******************** * * For FC LLDD's that are the NVME Host role. * * ****************************************************************** */ /* FC Port role bitmask - can merge with FC Port Roles in fc transport */ #define FC_PORT_ROLE_NVME_INITIATOR 0x10 #define FC_PORT_ROLE_NVME_TARGET 0x20 #define FC_PORT_ROLE_NVME_DISCOVERY 0x40 /** * struct nvme_fc_port_info - port-specific ids and FC connection-specific * data element used during NVME Host role * registrations * * Static fields describing the port being registered: * @node_name: FC WWNN for the port * @port_name: FC WWPN for the port * @port_role: What NVME roles are supported (see FC_PORT_ROLE_xxx) * @dev_loss_tmo: maximum delay for reconnects to an association on * this device. Used only on a remoteport. * * Initialization values for dynamic port fields: * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must * be set to 0. */ struct nvme_fc_port_info { u64 node_name; u64 port_name; u32 port_role; u32 port_id; u32 dev_loss_tmo; }; /** * struct nvmefc_ls_req - Request structure passed from NVME-FC transport * to LLDD in order to perform a NVME FC-4 LS * request and obtain a response. * * Values set by the NVME-FC layer prior to calling the LLDD ls_req * entrypoint. * @rqstaddr: pointer to request buffer * @rqstdma: PCI DMA address of request buffer * @rqstlen: Length, in bytes, of request buffer * @rspaddr: pointer to response buffer * @rspdma: PCI DMA address of response buffer * @rsplen: Length, in bytes, of response buffer * @timeout: Maximum amount of time, in seconds, to wait for the LS response. * If timeout exceeded, LLDD to abort LS exchange and complete * LS request with error status. * @private: pointer to memory allocated alongside the ls request structure * that is specifically for the LLDD to use while processing the * request. The length of the buffer corresponds to the * lsrqst_priv_sz value specified in the nvme_fc_port_template * supplied by the LLDD. * @done: The callback routine the LLDD is to invoke upon completion of * the LS request. req argument is the pointer to the original LS * request structure. Status argument must be 0 upon success, a * negative errno on failure (example: -ENXIO). */ struct nvmefc_ls_req { void *rqstaddr; dma_addr_t rqstdma; u32 rqstlen; void *rspaddr; dma_addr_t rspdma; u32 rsplen; u32 timeout; void *private; void (*done)(struct nvmefc_ls_req *req, int status); } __aligned(sizeof(u64)); /* alignment for other things alloc'd with */ enum nvmefc_fcp_datadir { NVMEFC_FCP_NODATA, /* payload_length and sg_cnt will be zero */ NVMEFC_FCP_WRITE, NVMEFC_FCP_READ, }; /** * struct nvmefc_fcp_req - Request structure passed from NVME-FC transport * to LLDD in order to perform a NVME FCP IO operation. * * Values set by the NVME-FC layer prior to calling the LLDD fcp_io * entrypoint. * @cmdaddr: pointer to the FCP CMD IU buffer * @rspaddr: pointer to the FCP RSP IU buffer * @cmddma: PCI DMA address of the FCP CMD IU buffer * @rspdma: PCI DMA address of the FCP RSP IU buffer * @cmdlen: Length, in bytes, of the FCP CMD IU buffer * @rsplen: Length, in bytes, of the FCP RSP IU buffer * @payload_length: Length of DATA_IN or DATA_OUT payload data to transfer * @sg_table: scatter/gather structure for payload data * @first_sgl: memory for 1st scatter/gather list segment for payload data * @sg_cnt: number of elements in the scatter/gather list * @io_dir: direction of the FCP request (see NVMEFC_FCP_xxx) * @sqid: The nvme SQID the command is being issued on * @done: The callback routine the LLDD is to invoke upon completion of * the FCP operation. req argument is the pointer to the original * FCP IO operation. * @private: pointer to memory allocated alongside the FCP operation * request structure that is specifically for the LLDD to use * while processing the operation. The length of the buffer * corresponds to the fcprqst_priv_sz value specified in the * nvme_fc_port_template supplied by the LLDD. * * Values set by the LLDD indicating completion status of the FCP operation. * Must be set prior to calling the done() callback. * @transferred_length: amount of payload data, in bytes, that were * transferred. Should equal payload_length on success. * @rcv_rsplen: length, in bytes, of the FCP RSP IU received. * @status: Completion status of the FCP operation. must be 0 upon success, * negative errno value upon failure (ex: -EIO). Note: this is * NOT a reflection of the NVME CQE completion status. Only the * status of the FCP operation at the NVME-FC level. */ struct nvmefc_fcp_req { void *cmdaddr; void *rspaddr; dma_addr_t cmddma; dma_addr_t rspdma; u16 cmdlen; u16 rsplen; u32 payload_length; struct sg_table sg_table; struct scatterlist *first_sgl; int sg_cnt; enum nvmefc_fcp_datadir io_dir; __le16 sqid; void (*done)(struct nvmefc_fcp_req *req); void *private; u32 transferred_length; u16 rcv_rsplen; u32 status; } __aligned(sizeof(u64)); /* alignment for other things alloc'd with */ /* * Direct copy of fc_port_state enum. For later merging */ enum nvme_fc_obj_state { FC_OBJSTATE_UNKNOWN, FC_OBJSTATE_NOTPRESENT, FC_OBJSTATE_ONLINE, FC_OBJSTATE_OFFLINE, /* User has taken Port Offline */ FC_OBJSTATE_BLOCKED, FC_OBJSTATE_BYPASSED, FC_OBJSTATE_DIAGNOSTICS, FC_OBJSTATE_LINKDOWN, FC_OBJSTATE_ERROR, FC_OBJSTATE_LOOPBACK, FC_OBJSTATE_DELETED, }; /** * struct nvme_fc_local_port - structure used between NVME-FC transport and * a LLDD to reference a local NVME host port. * Allocated/created by the nvme_fc_register_localport() * transport interface. * * Fields with static values for the port. Initialized by the * port_info struct supplied to the registration call. * @port_num: NVME-FC transport host port number * @port_role: NVME roles are supported on the port (see FC_PORT_ROLE_xxx) * @node_name: FC WWNN for the port * @port_name: FC WWPN for the port * @private: pointer to memory allocated alongside the local port * structure that is specifically for the LLDD to use. * The length of the buffer corresponds to the local_priv_sz * value specified in the nvme_fc_port_template supplied by * the LLDD. * @dev_loss_tmo: maximum delay for reconnects to an association on * this device. To modify, lldd must call * nvme_fc_set_remoteport_devloss(). * * Fields with dynamic values. Values may change base on link state. LLDD * may reference fields directly to change them. Initialized by the * port_info struct supplied to the registration call. * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must * be set to 0. * @port_state: Operational state of the port. */ struct nvme_fc_local_port { /* static/read-only fields */ u32 port_num; u32 port_role; u64 node_name; u64 port_name; void *private; /* dynamic fields */ u32 port_id; enum nvme_fc_obj_state port_state; } __aligned(sizeof(u64)); /* alignment for other things alloc'd with */ /** * struct nvme_fc_remote_port - structure used between NVME-FC transport and * a LLDD to reference a remote NVME subsystem port. * Allocated/created by the nvme_fc_register_remoteport() * transport interface. * * Fields with static values for the port. Initialized by the * port_info struct supplied to the registration call. * @port_num: NVME-FC transport remote subsystem port number * @port_role: NVME roles are supported on the port (see FC_PORT_ROLE_xxx) * @node_name: FC WWNN for the port * @port_name: FC WWPN for the port * @localport: pointer to the NVME-FC local host port the subsystem is * connected to. * @private: pointer to memory allocated alongside the remote port * structure that is specifically for the LLDD to use. * The length of the buffer corresponds to the remote_priv_sz * value specified in the nvme_fc_port_template supplied by * the LLDD. * * Fields with dynamic values. Values may change base on link or login * state. LLDD may reference fields directly to change them. Initialized by * the port_info struct supplied to the registration call. * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must * be set to 0. * @port_state: Operational state of the remote port. Valid values are * ONLINE or UNKNOWN. */ struct nvme_fc_remote_port { /* static fields */ u32 port_num; u32 port_role; u64 node_name; u64 port_name; struct nvme_fc_local_port *localport; void *private; u32 dev_loss_tmo; /* dynamic fields */ u32 port_id; enum nvme_fc_obj_state port_state; } __aligned(sizeof(u64)); /* alignment for other things alloc'd with */ /** * struct nvme_fc_port_template - structure containing static entrypoints and * operational parameters for an LLDD that supports NVME host * behavior. Passed by reference in port registrations. * NVME-FC transport remembers template reference and may * access it during runtime operation. * * Host/Initiator Transport Entrypoints/Parameters: * * @localport_delete: The LLDD initiates deletion of a localport via * nvme_fc_deregister_localport(). However, the teardown is * asynchronous. This routine is called upon the completion of the * teardown to inform the LLDD that the localport has been deleted. * Entrypoint is Mandatory. * * @remoteport_delete: The LLDD initiates deletion of a remoteport via * nvme_fc_deregister_remoteport(). However, the teardown is * asynchronous. This routine is called upon the completion of the * teardown to inform the LLDD that the remoteport has been deleted. * Entrypoint is Mandatory. * * @create_queue: Upon creating a host<->controller association, queues are * created such that they can be affinitized to cpus/cores. This * callback into the LLDD to notify that a controller queue is being * created. The LLDD may choose to allocate an associated hw queue * or map it onto a shared hw queue. Upon return from the call, the * LLDD specifies a handle that will be given back to it for any * command that is posted to the controller queue. The handle can * be used by the LLDD to map quickly to the proper hw queue for * command execution. The mask of cpu's that will map to this queue * at the block-level is also passed in. The LLDD should use the * queue id and/or cpu masks to ensure proper affinitization of the * controller queue to the hw queue. * Entrypoint is Optional. * * @delete_queue: This is the inverse of the crete_queue. During * host<->controller association teardown, this routine is called * when a controller queue is being terminated. Any association with * a hw queue should be termined. If there is a unique hw queue, the * hw queue should be torn down. * Entrypoint is Optional. * * @poll_queue: Called to poll for the completion of an io on a blk queue. * Entrypoint is Optional. * * @ls_req: Called to issue a FC-NVME FC-4 LS service request. * The nvme_fc_ls_req structure will fully describe the buffers for * the request payload and where to place the response payload. The * LLDD is to allocate an exchange, issue the LS request, obtain the * LS response, and call the "done" routine specified in the request * structure (argument to done is the ls request structure itself). * Entrypoint is Mandatory. * * @fcp_io: called to issue a FC-NVME I/O request. The I/O may be for * an admin queue or an i/o queue. The nvmefc_fcp_req structure will * fully describe the io: the buffer containing the FC-NVME CMD IU * (which contains the SQE), the sg list for the payload if applicable, * and the buffer to place the FC-NVME RSP IU into. The LLDD will * complete the i/o, indicating the amount of data transferred or * any transport error, and call the "done" routine specified in the * request structure (argument to done is the fcp request structure * itself). * Entrypoint is Mandatory. * * @ls_abort: called to request the LLDD to abort the indicated ls request. * The call may return before the abort has completed. After aborting * the request, the LLDD must still call the ls request done routine * indicating an FC transport Aborted status. * Entrypoint is Mandatory. * * @fcp_abort: called to request the LLDD to abort the indicated fcp request. * The call may return before the abort has completed. After aborting * the request, the LLDD must still call the fcp request done routine * indicating an FC transport Aborted status. * Entrypoint is Mandatory. * * @max_hw_queues: indicates the maximum number of hw queues the LLDD * supports for cpu affinitization. * Value is Mandatory. Must be at least 1. * * @max_sgl_segments: indicates the maximum number of sgl segments supported * by the LLDD * Value is Mandatory. Must be at least 1. Recommend at least 256. * * @max_dif_sgl_segments: indicates the maximum number of sgl segments * supported by the LLDD for DIF operations. * Value is Mandatory. Must be at least 1. Recommend at least 256. * * @dma_boundary: indicates the dma address boundary where dma mappings * will be split across. * Value is Mandatory. Typical value is 0xFFFFFFFF to split across * 4Gig address boundarys * * @local_priv_sz: The LLDD sets this field to the amount of additional * memory that it would like fc nvme layer to allocate on the LLDD's * behalf whenever a localport is allocated. The additional memory * area solely for the of the LLDD and its location is specified by * the localport->private pointer. * Value is Mandatory. Allowed to be zero. * * @remote_priv_sz: The LLDD sets this field to the amount of additional * memory that it would like fc nvme layer to allocate on the LLDD's * behalf whenever a remoteport is allocated. The additional memory * area solely for the of the LLDD and its location is specified by * the remoteport->private pointer. * Value is Mandatory. Allowed to be zero. * * @lsrqst_priv_sz: The LLDD sets this field to the amount of additional * memory that it would like fc nvme layer to allocate on the LLDD's * behalf whenever a ls request structure is allocated. The additional * memory area solely for the of the LLDD and its location is * specified by the ls_request->private pointer. * Value is Mandatory. Allowed to be zero. * * @fcprqst_priv_sz: The LLDD sets this field to the amount of additional * memory that it would like fc nvme layer to allocate on the LLDD's * behalf whenever a fcp request structure is allocated. The additional * memory area solely for the of the LLDD and its location is * specified by the fcp_request->private pointer. * Value is Mandatory. Allowed to be zero. */ struct nvme_fc_port_template { /* initiator-based functions */ void (*localport_delete)(struct nvme_fc_local_port *); void (*remoteport_delete)(struct nvme_fc_remote_port *); int (*create_queue)(struct nvme_fc_local_port *, unsigned int qidx, u16 qsize, void **handle); void (*delete_queue)(struct nvme_fc_local_port *, unsigned int qidx, void *handle); void (*poll_queue)(struct nvme_fc_local_port *, void *handle); int (*ls_req)(struct nvme_fc_local_port *, struct nvme_fc_remote_port *, struct nvmefc_ls_req *); int (*fcp_io)(struct nvme_fc_local_port *, struct nvme_fc_remote_port *, void *hw_queue_handle, struct nvmefc_fcp_req *); void (*ls_abort)(struct nvme_fc_local_port *, struct nvme_fc_remote_port *, struct nvmefc_ls_req *); void (*fcp_abort)(struct nvme_fc_local_port *, struct nvme_fc_remote_port *, void *hw_queue_handle, struct nvmefc_fcp_req *); u32 max_hw_queues; u16 max_sgl_segments; u16 max_dif_sgl_segments; u64 dma_boundary; /* sizes of additional private data for data structures */ u32 local_priv_sz; u32 remote_priv_sz; u32 lsrqst_priv_sz; u32 fcprqst_priv_sz; }; /* * Initiator/Host functions */ int nvme_fc_register_localport(struct nvme_fc_port_info *pinfo, struct nvme_fc_port_template *template, struct device *dev, struct nvme_fc_local_port **lport_p); int nvme_fc_unregister_localport(struct nvme_fc_local_port *localport); int nvme_fc_register_remoteport(struct nvme_fc_local_port *localport, struct nvme_fc_port_info *pinfo, struct nvme_fc_remote_port **rport_p); int nvme_fc_unregister_remoteport(struct nvme_fc_remote_port *remoteport); void nvme_fc_rescan_remoteport(struct nvme_fc_remote_port *remoteport); int nvme_fc_set_remoteport_devloss(struct nvme_fc_remote_port *remoteport, u32 dev_loss_tmo); /* * *************** LLDD FC-NVME Target/Subsystem API *************** * * For FC LLDD's that are the NVME Subsystem role * * ****************************************************************** */ /** * struct nvmet_fc_port_info - port-specific ids and FC connection-specific * data element used during NVME Subsystem role * registrations * * Static fields describing the port being registered: * @node_name: FC WWNN for the port * @port_name: FC WWPN for the port * * Initialization values for dynamic port fields: * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must * be set to 0. */ struct nvmet_fc_port_info { u64 node_name; u64 port_name; u32 port_id; }; /** * struct nvmefc_tgt_ls_req - Structure used between LLDD and NVMET-FC * layer to represent the exchange context for * a FC-NVME Link Service (LS). * * The structure is allocated by the LLDD whenever a LS Request is received * from the FC link. The address of the structure is passed to the nvmet-fc * layer via the nvmet_fc_rcv_ls_req() call. The address of the structure * will be passed back to the LLDD when the response is to be transmit. * The LLDD is to use the address to map back to the LLDD exchange structure * which maintains information such as the targetport the LS was received * on, the remote FC NVME initiator that sent the LS, and any FC exchange * context. Upon completion of the LS response transmit, the address of the * structure will be passed back to the LS rsp done() routine, allowing the * nvmet-fc layer to release dma resources. Upon completion of the done() * routine, no further access will be made by the nvmet-fc layer and the * LLDD can de-allocate the structure. * * Field initialization: * At the time of the nvmet_fc_rcv_ls_req() call, there is no content that * is valid in the structure. * * When the structure is used for the LLDD->xmt_ls_rsp() call, the nvmet-fc * layer will fully set the fields in order to specify the response * payload buffer and its length as well as the done routine to be called * upon compeletion of the transmit. The nvmet-fc layer will also set a * private pointer for its own use in the done routine. * * Values set by the NVMET-FC layer prior to calling the LLDD xmt_ls_rsp * entrypoint. * @rspbuf: pointer to the LS response buffer * @rspdma: PCI DMA address of the LS response buffer * @rsplen: Length, in bytes, of the LS response buffer * @done: The callback routine the LLDD is to invoke upon completion of * transmitting the LS response. req argument is the pointer to * the original ls request. * @nvmet_fc_private: pointer to an internal NVMET-FC layer structure used * as part of the NVMET-FC processing. The LLDD is not to access * this pointer. */ struct nvmefc_tgt_ls_req { void *rspbuf; dma_addr_t rspdma; u16 rsplen; void (*done)(struct nvmefc_tgt_ls_req *req); void *nvmet_fc_private; /* LLDD is not to access !! */ }; /* Operations that NVME-FC layer may request the LLDD to perform for FCP */ enum { NVMET_FCOP_READDATA = 1, /* xmt data to initiator */ NVMET_FCOP_WRITEDATA = 2, /* xmt data from initiator */ NVMET_FCOP_READDATA_RSP = 3, /* xmt data to initiator and send * rsp as well */ NVMET_FCOP_RSP = 4, /* send rsp frame */ }; /** * struct nvmefc_tgt_fcp_req - Structure used between LLDD and NVMET-FC * layer to represent the exchange context and * the specific FC-NVME IU operation(s) to perform * for a FC-NVME FCP IO. * * Structure used between LLDD and nvmet-fc layer to represent the exchange * context for a FC-NVME FCP I/O operation (e.g. a nvme sqe, the sqe-related * memory transfers, and its assocated cqe transfer). * * The structure is allocated by the LLDD whenever a FCP CMD IU is received * from the FC link. The address of the structure is passed to the nvmet-fc * layer via the nvmet_fc_rcv_fcp_req() call. The address of the structure * will be passed back to the LLDD for the data operations and transmit of * the response. The LLDD is to use the address to map back to the LLDD * exchange structure which maintains information such as the targetport * the FCP I/O was received on, the remote FC NVME initiator that sent the * FCP I/O, and any FC exchange context. Upon completion of the FCP target * operation, the address of the structure will be passed back to the FCP * op done() routine, allowing the nvmet-fc layer to release dma resources. * Upon completion of the done() routine for either RSP or ABORT ops, no * further access will be made by the nvmet-fc layer and the LLDD can * de-allocate the structure. * * Field initialization: * At the time of the nvmet_fc_rcv_fcp_req() call, there is no content that * is valid in the structure. * * When the structure is used for an FCP target operation, the nvmet-fc * layer will fully set the fields in order to specify the scattergather * list, the transfer length, as well as the done routine to be called * upon compeletion of the operation. The nvmet-fc layer will also set a * private pointer for its own use in the done routine. * * Values set by the NVMET-FC layer prior to calling the LLDD fcp_op * entrypoint. * @op: Indicates the FCP IU operation to perform (see NVMET_FCOP_xxx) * @hwqid: Specifies the hw queue index (0..N-1, where N is the * max_hw_queues value from the LLD's nvmet_fc_target_template) * that the operation is to use. * @offset: Indicates the DATA_OUT/DATA_IN payload offset to be tranferred. * Field is only valid on WRITEDATA, READDATA, or READDATA_RSP ops. * @timeout: amount of time, in seconds, to wait for a response from the NVME * host. A value of 0 is an infinite wait. * Valid only for the following ops: * WRITEDATA: caps the wait for data reception * READDATA_RSP & RSP: caps wait for FCP_CONF reception (if used) * @transfer_length: the length, in bytes, of the DATA_OUT or DATA_IN payload * that is to be transferred. * Valid only for the WRITEDATA, READDATA, or READDATA_RSP ops. * @ba_rjt: Contains the BA_RJT payload that is to be transferred. * Valid only for the NVMET_FCOP_BA_RJT op. * @sg: Scatter/gather list for the DATA_OUT/DATA_IN payload data. * Valid only for the WRITEDATA, READDATA, or READDATA_RSP ops. * @sg_cnt: Number of valid entries in the scatter/gather list. * Valid only for the WRITEDATA, READDATA, or READDATA_RSP ops. * @rspaddr: pointer to the FCP RSP IU buffer to be transmit * Used by RSP and READDATA_RSP ops * @rspdma: PCI DMA address of the FCP RSP IU buffer * Used by RSP and READDATA_RSP ops * @rsplen: Length, in bytes, of the FCP RSP IU buffer * Used by RSP and READDATA_RSP ops * @done: The callback routine the LLDD is to invoke upon completion of * the operation. req argument is the pointer to the original * FCP subsystem op request. * @nvmet_fc_private: pointer to an internal NVMET-FC layer structure used * as part of the NVMET-FC processing. The LLDD is not to * reference this field. * * Values set by the LLDD indicating completion status of the FCP operation. * Must be set prior to calling the done() callback. * @transferred_length: amount of DATA_OUT payload data received by a * a WRITEDATA operation. If not a WRITEDATA operation, value must * be set to 0. Should equal transfer_length on success. * @fcp_error: status of the FCP operation. Must be 0 on success; on failure * must be a NVME_SC_FC_xxxx value. */ struct nvmefc_tgt_fcp_req { u8 op; u16 hwqid; u32 offset; u32 timeout; u32 transfer_length; struct fc_ba_rjt ba_rjt; struct scatterlist *sg; int sg_cnt; void *rspaddr; dma_addr_t rspdma; u16 rsplen; void (*done)(struct nvmefc_tgt_fcp_req *); void *nvmet_fc_private; /* LLDD is not to access !! */ u32 transferred_length; int fcp_error; }; /* Target Features (Bit fields) LLDD supports */ enum { NVMET_FCTGTFEAT_READDATA_RSP = (1 << 0), /* Bit 0: supports the NVMET_FCPOP_READDATA_RSP op, which * sends (the last) Read Data sequence followed by the RSP * sequence in one LLDD operation. Errors during Data * sequence transmit must not allow RSP sequence to be sent. */ NVMET_FCTGTFEAT_CMD_IN_ISR = (1 << 1), /* Bit 2: When 0, the LLDD is calling the cmd rcv handler * in a non-isr context, allowing the transport to finish * op completion in the calling context. When 1, the LLDD * is calling the cmd rcv handler in an ISR context, * requiring the transport to transition to a workqueue * for op completion. */ NVMET_FCTGTFEAT_OPDONE_IN_ISR = (1 << 2), /* Bit 3: When 0, the LLDD is calling the op done handler * in a non-isr context, allowing the transport to finish * op completion in the calling context. When 1, the LLDD * is calling the op done handler in an ISR context, * requiring the transport to transition to a workqueue * for op completion. */ }; /** * struct nvmet_fc_target_port - structure used between NVME-FC transport and * a LLDD to reference a local NVME subsystem port. * Allocated/created by the nvme_fc_register_targetport() * transport interface. * * Fields with static values for the port. Initialized by the * port_info struct supplied to the registration call. * @port_num: NVME-FC transport subsytem port number * @node_name: FC WWNN for the port * @port_name: FC WWPN for the port * @private: pointer to memory allocated alongside the local port * structure that is specifically for the LLDD to use. * The length of the buffer corresponds to the target_priv_sz * value specified in the nvme_fc_target_template supplied by * the LLDD. * * Fields with dynamic values. Values may change base on link state. LLDD * may reference fields directly to change them. Initialized by the * port_info struct supplied to the registration call. * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must * be set to 0. * @port_state: Operational state of the port. */ struct nvmet_fc_target_port { /* static/read-only fields */ u32 port_num; u64 node_name; u64 port_name; void *private; /* dynamic fields */ u32 port_id; enum nvme_fc_obj_state port_state; } __aligned(sizeof(u64)); /* alignment for other things alloc'd with */ /** * struct nvmet_fc_target_template - structure containing static entrypoints * and operational parameters for an LLDD that supports NVME * subsystem behavior. Passed by reference in port * registrations. NVME-FC transport remembers template * reference and may access it during runtime operation. * * Subsystem/Target Transport Entrypoints/Parameters: * * @targetport_delete: The LLDD initiates deletion of a targetport via * nvmet_fc_unregister_targetport(). However, the teardown is * asynchronous. This routine is called upon the completion of the * teardown to inform the LLDD that the targetport has been deleted. * Entrypoint is Mandatory. * * @xmt_ls_rsp: Called to transmit the response to a FC-NVME FC-4 LS service. * The nvmefc_tgt_ls_req structure is the same LLDD-supplied exchange * structure specified in the nvmet_fc_rcv_ls_req() call made when * the LS request was received. The structure will fully describe * the buffers for the response payload and the dma address of the * payload. The LLDD is to transmit the response (or return a non-zero * errno status), and upon completion of the transmit, call the * "done" routine specified in the nvmefc_tgt_ls_req structure * (argument to done is the ls reqwuest structure itself). * After calling the done routine, the LLDD shall consider the * LS handling complete and the nvmefc_tgt_ls_req structure may * be freed/released. * Entrypoint is Mandatory. * * @fcp_op: Called to perform a data transfer or transmit a response. * The nvmefc_tgt_fcp_req structure is the same LLDD-supplied * exchange structure specified in the nvmet_fc_rcv_fcp_req() call * made when the FCP CMD IU was received. The op field in the * structure shall indicate the operation for the LLDD to perform * relative to the io. * NVMET_FCOP_READDATA operation: the LLDD is to send the * payload data (described by sglist) to the host in 1 or * more FC sequences (preferrably 1). Note: the fc-nvme layer * may call the READDATA operation multiple times for longer * payloads. * NVMET_FCOP_WRITEDATA operation: the LLDD is to receive the * payload data (described by sglist) from the host via 1 or * more FC sequences (preferrably 1). The LLDD is to generate * the XFER_RDY IU(s) corresponding to the data being requested. * Note: the FC-NVME layer may call the WRITEDATA operation * multiple times for longer payloads. * NVMET_FCOP_READDATA_RSP operation: the LLDD is to send the * payload data (described by sglist) to the host in 1 or * more FC sequences (preferrably 1). If an error occurs during * payload data transmission, the LLDD is to set the * nvmefc_tgt_fcp_req fcp_error and transferred_length field, then * consider the operation complete. On error, the LLDD is to not * transmit the FCP_RSP iu. If all payload data is transferred * successfully, the LLDD is to update the nvmefc_tgt_fcp_req * transferred_length field and may subsequently transmit the * FCP_RSP iu payload (described by rspbuf, rspdma, rsplen). * If FCP_CONF is supported, the LLDD is to await FCP_CONF * reception to confirm the RSP reception by the host. The LLDD * may retramsit the FCP_RSP iu if necessary per FC-NVME. Upon * transmission of the FCP_RSP iu if FCP_CONF is not supported, * or upon success/failure of FCP_CONF if it is supported, the * LLDD is to set the nvmefc_tgt_fcp_req fcp_error field and * consider the operation complete. * NVMET_FCOP_RSP: the LLDD is to transmit the FCP_RSP iu payload * (described by rspbuf, rspdma, rsplen). If FCP_CONF is * supported, the LLDD is to await FCP_CONF reception to confirm * the RSP reception by the host. The LLDD may retramsit the * FCP_RSP iu if FCP_CONF is not received per FC-NVME. Upon * transmission of the FCP_RSP iu if FCP_CONF is not supported, * or upon success/failure of FCP_CONF if it is supported, the * LLDD is to set the nvmefc_tgt_fcp_req fcp_error field and * consider the operation complete. * Upon completing the indicated operation, the LLDD is to set the * status fields for the operation (tranferred_length and fcp_error * status) in the request, then call the "done" routine * indicated in the fcp request. After the operation completes, * regardless of whether the FCP_RSP iu was successfully transmit, * the LLDD-supplied exchange structure must remain valid until the * transport calls the fcp_req_release() callback to return ownership * of the exchange structure back to the LLDD so that it may be used * for another fcp command. * Note: when calling the done routine for READDATA or WRITEDATA * operations, the fc-nvme layer may immediate convert, in the same * thread and before returning to the LLDD, the fcp operation to * the next operation for the fcp io and call the LLDDs fcp_op * call again. If fields in the fcp request are to be accessed post * the done call, the LLDD should save their values prior to calling * the done routine, and inspect the save values after the done * routine. * Returns 0 on success, -<errno> on failure (Ex: -EIO) * Entrypoint is Mandatory. * * @fcp_abort: Called by the transport to abort an active command. * The command may be in-between operations (nothing active in LLDD) * or may have an active WRITEDATA operation pending. The LLDD is to * initiate the ABTS process for the command and return from the * callback. The ABTS does not need to be complete on the command. * The fcp_abort callback inherently cannot fail. After the * fcp_abort() callback completes, the transport will wait for any * outstanding operation (if there was one) to complete, then will * call the fcp_req_release() callback to return the command's * exchange context back to the LLDD. * Entrypoint is Mandatory. * * @fcp_req_release: Called by the transport to return a nvmefc_tgt_fcp_req * to the LLDD after all operations on the fcp operation are complete. * This may be due to the command completing or upon completion of * abort cleanup. * Entrypoint is Mandatory. * * @defer_rcv: Called by the transport to signal the LLLD that it has * begun processing of a previously received NVME CMD IU. The LLDD * is now free to re-use the rcv buffer associated with the * nvmefc_tgt_fcp_req. * Entrypoint is Optional. * * @max_hw_queues: indicates the maximum number of hw queues the LLDD * supports for cpu affinitization. * Value is Mandatory. Must be at least 1. * * @max_sgl_segments: indicates the maximum number of sgl segments supported * by the LLDD * Value is Mandatory. Must be at least 1. Recommend at least 256. * * @max_dif_sgl_segments: indicates the maximum number of sgl segments * supported by the LLDD for DIF operations. * Value is Mandatory. Must be at least 1. Recommend at least 256. * * @dma_boundary: indicates the dma address boundary where dma mappings * will be split across. * Value is Mandatory. Typical value is 0xFFFFFFFF to split across * 4Gig address boundarys * * @target_features: The LLDD sets bits in this field to correspond to * optional features that are supported by the LLDD. * Refer to the NVMET_FCTGTFEAT_xxx values. * Value is Mandatory. Allowed to be zero. * * @target_priv_sz: The LLDD sets this field to the amount of additional * memory that it would like fc nvme layer to allocate on the LLDD's * behalf whenever a targetport is allocated. The additional memory * area solely for the of the LLDD and its location is specified by * the targetport->private pointer. * Value is Mandatory. Allowed to be zero. */ struct nvmet_fc_target_template { void (*targetport_delete)(struct nvmet_fc_target_port *tgtport); int (*xmt_ls_rsp)(struct nvmet_fc_target_port *tgtport, struct nvmefc_tgt_ls_req *tls_req); int (*fcp_op)(struct nvmet_fc_target_port *tgtport, struct nvmefc_tgt_fcp_req *fcpreq); void (*fcp_abort)(struct nvmet_fc_target_port *tgtport, struct nvmefc_tgt_fcp_req *fcpreq); void (*fcp_req_release)(struct nvmet_fc_target_port *tgtport, struct nvmefc_tgt_fcp_req *fcpreq); void (*defer_rcv)(struct nvmet_fc_target_port *tgtport, struct nvmefc_tgt_fcp_req *fcpreq); u32 max_hw_queues; u16 max_sgl_segments; u16 max_dif_sgl_segments; u64 dma_boundary; u32 target_features; u32 target_priv_sz; }; int nvmet_fc_register_targetport(struct nvmet_fc_port_info *portinfo, struct nvmet_fc_target_template *template, struct device *dev, struct nvmet_fc_target_port **tgtport_p); int nvmet_fc_unregister_targetport(struct nvmet_fc_target_port *tgtport); int nvmet_fc_rcv_ls_req(struct nvmet_fc_target_port *tgtport, struct nvmefc_tgt_ls_req *lsreq, void *lsreqbuf, u32 lsreqbuf_len); int nvmet_fc_rcv_fcp_req(struct nvmet_fc_target_port *tgtport, struct nvmefc_tgt_fcp_req *fcpreq, void *cmdiubuf, u32 cmdiubuf_len); void nvmet_fc_rcv_fcp_abort(struct nvmet_fc_target_port *tgtport, struct nvmefc_tgt_fcp_req *fcpreq); #endif /* _NVME_FC_DRIVER_H */
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