5bd75403be
* remotes/origin/tmp-f686d9f:
ANDROID: update abi_gki_aarch64.xml for 5.2-rc6
Linux 5.2-rc6
Revert "iommu/vt-d: Fix lock inversion between iommu->lock and device_domain_lock"
Bluetooth: Fix regression with minimum encryption key size alignment
tcp: refine memory limit test in tcp_fragment()
x86/vdso: Prevent segfaults due to hoisted vclock reads
SUNRPC: Fix a credential refcount leak
Revert "SUNRPC: Declare RPC timers as TIMER_DEFERRABLE"
net :sunrpc :clnt :Fix xps refcount imbalance on the error path
NFS4: Only set creation opendata if O_CREAT
ANDROID: gki_defconfig: workaround to enable configs
ANDROID: gki_defconfig: more configs for partners
ARM: 8867/1: vdso: pass --be8 to linker if necessary
KVM: nVMX: reorganize initial steps of vmx_set_nested_state
KVM: PPC: Book3S HV: Invalidate ERAT when flushing guest TLB entries
habanalabs: use u64_to_user_ptr() for reading user pointers
nfsd: replace Jeff by Chuck as nfsd co-maintainer
inet: clear num_timeout reqsk_alloc()
PCI/P2PDMA: Ignore root complex whitelist when an IOMMU is present
net: mvpp2: debugfs: Add pmap to fs dump
ipv6: Default fib6_type to RTN_UNICAST when not set
net: hns3: Fix inconsistent indenting
net/af_iucv: always register net_device notifier
net/af_iucv: build proper skbs for HiperTransport
net/af_iucv: remove GFP_DMA restriction for HiperTransport
doc: fix documentation about UIO_MEM_LOGICAL using
MAINTAINERS / Documentation: Thorsten Scherer is the successor of Gavin Schenk
docs: fb: Add TER16x32 to the available font names
MAINTAINERS: fpga: hand off maintainership to Moritz
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 507
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KVM: arm/arm64: Fix emulated ptimer irq injection
net: dsa: mv88e6xxx: fix shift of FID bits in mv88e6185_g1_vtu_loadpurge()
tests: kvm: Check for a kernel warning
kvm: tests: Sort tests in the Makefile alphabetically
KVM: x86/mmu: Allocate PAE root array when using SVM's 32-bit NPT
KVM: x86: Modify struct kvm_nested_state to have explicit fields for data
fanotify: update connector fsid cache on add mark
quota: fix a problem about transfer quota
drm/i915: Don't clobber M/N values during fastset check
powerpc: enable a 30-bit ZONE_DMA for 32-bit pmac
ovl: make i_ino consistent with st_ino in more cases
scsi: qla2xxx: Fix hardlockup in abort command during driver remove
scsi: ufs: Avoid runtime suspend possibly being blocked forever
scsi: qedi: update driver version to 8.37.0.20
scsi: qedi: Check targetname while finding boot target information
hvsock: fix epollout hang from race condition
net/udp_gso: Allow TX timestamp with UDP GSO
net: netem: fix use after free and double free with packet corruption
net: netem: fix backlog accounting for corrupted GSO frames
net: lio_core: fix potential sign-extension overflow on large shift
tipc: pass tunnel dev as NULL to udp_tunnel(6)_xmit_skb
ip6_tunnel: allow not to count pkts on tstats by passing dev as NULL
ip_tunnel: allow not to count pkts on tstats by setting skb's dev to NULL
apparmor: reset pos on failure to unpack for various functions
apparmor: enforce nullbyte at end of tag string
apparmor: fix PROFILE_MEDIATES for untrusted input
RDMA/efa: Handle mmap insertions overflow
tun: wake up waitqueues after IFF_UP is set
drm: return -EFAULT if copy_to_user() fails
net: remove duplicate fetch in sock_getsockopt
tipc: fix issues with early FAILOVER_MSG from peer
bnx2x: Check if transceiver implements DDM before access
xhci: detect USB 3.2 capable host controllers correctly
usb: xhci: Don't try to recover an endpoint if port is in error state.
KVM: fix typo in documentation
drm/panfrost: Make sure a BO is only unmapped when appropriate
md: fix for divide error in status_resync
soc: ixp4xx: npe: Fix an IS_ERR() vs NULL check in probe
arm64/mm: don't initialize pgd_cache twice
MAINTAINERS: Update my email address
arm64/sve: <uapi/asm/ptrace.h> should not depend on <uapi/linux/prctl.h>
ovl: fix typo in MODULE_PARM_DESC
ovl: fix bogus -Wmaybe-unitialized warning
ovl: don't fail with disconnected lower NFS
mmc: core: Prevent processing SDIO IRQs when the card is suspended
mmc: sdhci: sdhci-pci-o2micro: Correctly set bus width when tuning
brcmfmac: sdio: Don't tune while the card is off
mmc: core: Add sdio_retune_hold_now() and sdio_retune_release()
brcmfmac: sdio: Disable auto-tuning around commands expected to fail
mmc: core: API to temporarily disable retuning for SDIO CRC errors
Revert "brcmfmac: disable command decode in sdio_aos"
ARM: ixp4xx: include irqs.h where needed
ARM: ixp4xx: mark ixp4xx_irq_setup as __init
ARM: ixp4xx: don't select SERIAL_OF_PLATFORM
firmware: trusted_foundations: add ARMv7 dependency
usb: dwc2: Use generic PHY width in params setup
RDMA/efa: Fix success return value in case of error
IB/hfi1: Handle port down properly in pio
IB/hfi1: Handle wakeup of orphaned QPs for pio
IB/hfi1: Wakeup QPs orphaned on wait list after flush
IB/hfi1: Use aborts to trigger RC throttling
IB/hfi1: Create inline to get extended headers
IB/hfi1: Silence txreq allocation warnings
IB/hfi1: Avoid hardlockup with flushlist_lock
KVM: PPC: Book3S HV: Only write DAWR[X] when handling h_set_dawr in real mode
KVM: PPC: Book3S HV: Fix r3 corruption in h_set_dabr()
fs/namespace: fix unprivileged mount propagation
vfs: fsmount: add missing mntget()
cifs: fix GlobalMid_Lock bug in cifs_reconnect
SMB3: retry on STATUS_INSUFFICIENT_RESOURCES instead of failing write
staging: erofs: add requirements field in superblock
arm64: ssbd: explicitly depend on <linux/prctl.h>
block: fix page leak when merging to same page
block: return from __bio_try_merge_page if merging occured in the same page
Btrfs: fix failure to persist compression property xattr deletion on fsync
riscv: remove unused barrier defines
usb: chipidea: udc: workaround for endpoint conflict issue
MAINTAINERS: Change QCOM repo location
mmc: mediatek: fix SDIO IRQ detection issue
mmc: mediatek: fix SDIO IRQ interrupt handle flow
mmc: core: complete HS400 before checking status
riscv: mm: synchronize MMU after pte change
MAINTAINERS: Update my email address to use @kernel.org
ANDROID: update abi_gki_aarch64.xml for 5.2-rc5
riscv: dts: add initial board data for the SiFive HiFive Unleashed
riscv: dts: add initial support for the SiFive FU540-C000 SoC
dt-bindings: riscv: convert cpu binding to json-schema
dt-bindings: riscv: sifive: add YAML documentation for the SiFive FU540
arch: riscv: add support for building DTB files from DT source data
drm/i915/gvt: ignore unexpected pvinfo write
lapb: fixed leak of control-blocks.
tipc: purge deferredq list for each grp member in tipc_group_delete
ax25: fix inconsistent lock state in ax25_destroy_timer
neigh: fix use-after-free read in pneigh_get_next
tcp: fix compile error if !CONFIG_SYSCTL
hv_sock: Suppress bogus "may be used uninitialized" warnings
be2net: Fix number of Rx queues used for flow hashing
net: handle 802.1P vlan 0 packets properly
Linux 5.2-rc5
tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()
tcp: add tcp_min_snd_mss sysctl
tcp: tcp_fragment() should apply sane memory limits
tcp: limit payload size of sacked skbs
Revert "net: phylink: set the autoneg state in phylink_phy_change"
bpf: fix nested bpf tracepoints with per-cpu data
bpf: Fix out of bounds memory access in bpf_sk_storage
vsock/virtio: set SOCK_DONE on peer shutdown
net: dsa: rtl8366: Fix up VLAN filtering
net: phylink: set the autoneg state in phylink_phy_change
powerpc/32: fix build failure on book3e with KVM
powerpc/booke: fix fast syscall entry on SMP
powerpc/32s: fix initial setup of segment registers on secondary CPU
x86/microcode, cpuhotplug: Add a microcode loader CPU hotplug callback
net: add high_order_alloc_disable sysctl/static key
tcp: add tcp_tx_skb_cache sysctl
tcp: add tcp_rx_skb_cache sysctl
sysctl: define proc_do_static_key()
hv_netvsc: Set probe mode to sync
net: sched: flower: don't call synchronize_rcu() on mask creation
net: dsa: fix warning same module names
sctp: Free cookie before we memdup a new one
net: dsa: microchip: Don't try to read stats for unused ports
qmi_wwan: extend permitted QMAP mux_id value range
qmi_wwan: avoid RCU stalls on device disconnect when in QMAP mode
qmi_wwan: add network device usage statistics for qmimux devices
qmi_wwan: add support for QMAP padding in the RX path
bpf, x64: fix stack layout of JITed bpf code
Smack: Restore the smackfsdef mount option and add missing prefixes
bpf, devmap: Add missing RCU read lock on flush
bpf, devmap: Add missing bulk queue free
bpf, devmap: Fix premature entry free on destroying map
ftrace: Fix NULL pointer dereference in free_ftrace_func_mapper()
module: Fix livepatch/ftrace module text permissions race
tracing/uprobe: Fix obsolete comment on trace_uprobe_create()
tracing/uprobe: Fix NULL pointer dereference in trace_uprobe_create()
tracing: Make two symbols static
tracing: avoid build warning with HAVE_NOP_MCOUNT
tracing: Fix out-of-range read in trace_stack_print()
gfs2: Fix rounding error in gfs2_iomap_page_prepare
net: phylink: further mac_config documentation improvements
nfc: Ensure presence of required attributes in the deactivate_target handler
btrfs: start readahead also in seed devices
x86/kasan: Fix boot with 5-level paging and KASAN
cfg80211: report measurement start TSF correctly
cfg80211: fix memory leak of wiphy device name
cfg80211: util: fix bit count off by one
mac80211: do not start any work during reconfigure flow
cfg80211: use BIT_ULL in cfg80211_parse_mbssid_data()
mac80211: only warn once on chanctx_conf being NULL
mac80211: drop robust management frames from unknown TA
gpu: ipu-v3: image-convert: Fix image downsize coefficients
gpu: ipu-v3: image-convert: Fix input bytesperline for packed formats
gpu: ipu-v3: image-convert: Fix input bytesperline width/height align
thunderbolt: Implement CIO reset correctly for Titan Ridge
ARM: davinci: da8xx: specify dma_coherent_mask for lcdc
ARM: davinci: da850-evm: call regulator_has_full_constraints()
timekeeping: Repair ktime_get_coarse*() granularity
Revert "ALSA: hda/realtek - Improve the headset mic for Acer Aspire laptops"
ANDROID: update abi_gki_aarch64.xml
mm/devm_memremap_pages: fix final page put race
PCI/P2PDMA: track pgmap references per resource, not globally
lib/genalloc: introduce chunk owners
PCI/P2PDMA: fix the gen_pool_add_virt() failure path
mm/devm_memremap_pages: introduce devm_memunmap_pages
drivers/base/devres: introduce devm_release_action()
mm/vmscan.c: fix trying to reclaim unevictable LRU page
coredump: fix race condition between collapse_huge_page() and core dumping
mm/mlock.c: change count_mm_mlocked_page_nr return type
mm: mmu_gather: remove __tlb_reset_range() for force flush
fs/ocfs2: fix race in ocfs2_dentry_attach_lock()
mm/vmscan.c: fix recent_rotated history
mm/mlock.c: mlockall error for flag MCL_ONFAULT
scripts/decode_stacktrace.sh: prefix addr2line with $CROSS_COMPILE
mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node
mm: memcontrol: don't batch updates of local VM stats and events
PCI: PM: Skip devices in D0 for suspend-to-idle
ANDROID: Removed extraneous configs from gki
powerpc/bpf: use unsigned division instruction for 64-bit operations
bpf: fix div64 overflow tests to properly detect errors
bpf: sync BPF_FIB_LOOKUP flag changes with BPF uapi
bpf: simplify definition of BPF_FIB_LOOKUP related flags
cifs: add spinlock for the openFileList to cifsInodeInfo
cifs: fix panic in smb2_reconnect
x86/fpu: Don't use current->mm to check for a kthread
KVM: nVMX: use correct clean fields when copying from eVMCS
vfio-ccw: Destroy kmem cache region on module exit
block/ps3vram: Use %llu to format sector_t after LBDAF removal
libata: Extend quirks for the ST1000LM024 drives with NOLPM quirk
bcache: only set BCACHE_DEV_WB_RUNNING when cached device attached
bcache: fix stack corruption by PRECEDING_KEY()
arm64/sve: Fix missing SVE/FPSIMD endianness conversions
blk-mq: remove WARN_ON(!q->elevator) from blk_mq_sched_free_requests
blkio-controller.txt: Remove references to CFQ
block/switching-sched.txt: Update to blk-mq schedulers
null_blk: remove duplicate check for report zone
blk-mq: no need to check return value of debugfs_create functions
io_uring: fix memory leak of UNIX domain socket inode
block: force select mq-deadline for zoned block devices
binder: fix possible UAF when freeing buffer
drm/amdgpu: return 0 by default in amdgpu_pm_load_smu_firmware
drm/amdgpu: Fix bounds checking in amdgpu_ras_is_supported()
ANDROID: x86 gki_defconfig: enable DMA_CMA
ANDROID: Fixed x86 regression
ANDROID: gki_defconfig: enable DMA_CMA
Input: synaptics - enable SMBus on ThinkPad E480 and E580
net: mvpp2: prs: Use the correct helpers when removing all VID filters
net: mvpp2: prs: Fix parser range for VID filtering
mlxsw: spectrum: Disallow prio-tagged packets when PVID is removed
mlxsw: spectrum_buffers: Reduce pool size on Spectrum-2
selftests: tc_flower: Add TOS matching test
mlxsw: spectrum_flower: Fix TOS matching
selftests: mlxsw: Test nexthop offload indication
mlxsw: spectrum_router: Refresh nexthop neighbour when it becomes dead
mlxsw: spectrum: Use different seeds for ECMP and LAG hash
net: tls, correctly account for copied bytes with multiple sk_msgs
vrf: Increment Icmp6InMsgs on the original netdev
cpuset: restore sanity to cpuset_cpus_allowed_fallback()
net: ethtool: Allow matching on vlan DEI bit
linux-next: DOC: RDS: Fix a typo in rds.txt
x86/kgdb: Return 0 from kgdb_arch_set_breakpoint()
mpls: fix af_mpls dependencies for real
selinux: fix a missing-check bug in selinux_sb_eat_lsm_opts()
selinux: fix a missing-check bug in selinux_add_mnt_opt( )
arm64: tlbflush: Ensure start/end of address range are aligned to stride
usb: typec: Make sure an alt mode exist before getting its partner
KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy
KVM: arm64: Filter out invalid core register IDs in KVM_GET_REG_LIST
KVM: arm64: Implement vq_present() as a macro
xdp: check device pointer before clearing
bpf: net: Set sk_bpf_storage back to NULL for cloned sk
Btrfs: fix race between block group removal and block group allocation
clocksource/drivers/arm_arch_timer: Don't trace count reader functions
i2c: pca-platform: Fix GPIO lookup code
thunderbolt: Make sure device runtime resume completes before taking domain lock
drm: add fallback override/firmware EDID modes workaround
i2c: acorn: fix i2c warning
arm64: Don't unconditionally add -Wno-psabi to KBUILD_CFLAGS
drm/edid: abstract override/firmware EDID retrieval
platform/mellanox: mlxreg-hotplug: Add devm_free_irq call to remove flow
platform/x86: mlx-platform: Fix parent device in i2c-mux-reg device registration
platform/x86: intel-vbtn: Report switch events when event wakes device
platform/x86: asus-wmi: Only Tell EC the OS will handle display hotkeys from asus_nb_wmi
ARM: mvebu_v7_defconfig: fix Ethernet on Clearfog
x86/resctrl: Prevent NULL pointer dereference when local MBM is disabled
x86/resctrl: Don't stop walking closids when a locksetup group is found
iommu/arm-smmu: Avoid constant zero in TLBI writes
drm/i915/perf: fix whitelist on Gen10+
drm/i915/sdvo: Implement proper HDMI audio support for SDVO
drm/i915: Fix per-pixel alpha with CCS
drm/i915/dmc: protect against reading random memory
drm/i915/dsi: Use a fuzzy check for burst mode clock check
Input: imx_keypad - make sure keyboard can always wake up system
selinux: log raw contexts as untrusted strings
ptrace: restore smp_rmb() in __ptrace_may_access()
IB/hfi1: Correct tid qp rcd to match verbs context
IB/hfi1: Close PSM sdma_progress sleep window
IB/hfi1: Validate fault injection opcode user input
geneve: Don't assume linear buffers in error handler
vxlan: Don't assume linear buffers in error handler
net: openvswitch: do not free vport if register_netdevice() is failed.
net: correct udp zerocopy refcnt also when zerocopy only on append
drm/amdgpu/{uvd,vcn}: fetch ring's read_ptr after alloc
ovl: fix wrong flags check in FS_IOC_FS[SG]ETXATTR ioctls
riscv: Fix udelay in RV32.
drm/vmwgfx: fix a warning due to missing dma_parms
riscv: export pm_power_off again
drm/vmwgfx: Honor the sg list segment size limitation
RISC-V: defconfig: enable clocks, serial console
drm/vmwgfx: Use the backdoor port if the HB port is not available
bpf: lpm_trie: check left child of last leftmost node for NULL
Revert "fuse: require /dev/fuse reads to have enough buffer capacity"
ALSA: ice1712: Check correct return value to snd_i2c_sendbytes (EWS/DMX 6Fire)
ALSA: oxfw: allow PCM capture for Stanton SCS.1m
ALSA: firewire-motu: fix destruction of data for isochronous resources
s390/ctl_reg: mark __ctl_set_bit and __ctl_clear_bit as __always_inline
s390/boot: disable address-of-packed-member warning
ANDROID: update gki aarch64 ABI representation
cgroup: Fix css_task_iter_advance_css_set() cset skip condition
drm/panfrost: Require the simple_ondemand governor
drm/panfrost: make devfreq optional again
drm/gem_shmem: Use a writecombine mapping for ->vaddr
mmc: sdhi: disallow HS400 for M3-W ES1.2, RZ/G2M, and V3H
ASoC: Intel: sst: fix kmalloc call with wrong flags
ASoC: core: Fix deadlock in snd_soc_instantiate_card()
cgroup/bfq: revert bfq.weight symlink change
ARM: dts: am335x phytec boards: Fix cd-gpios active level
ARM: dts: dra72x: Disable usb4_tm target module
nfp: ensure skb network header is set for packet redirect
tcp: fix undo spurious SYNACK in passive Fast Open
mpls: fix af_mpls dependencies
ibmvnic: Fix unchecked return codes of memory allocations
ibmvnic: Refresh device multicast list after reset
ibmvnic: Do not close unopened driver during reset
mpls: fix warning with multi-label encap
net: phy: rename Asix Electronics PHY driver
ipv6: flowlabel: fl6_sock_lookup() must use atomic_inc_not_zero
net: ipv4: fib_semantics: fix uninitialized variable
Input: iqs5xx - get axis info before calling input_mt_init_slots()
Linux 5.2-rc4
drm: panel-orientation-quirks: Add quirk for GPD MicroPC
drm: panel-orientation-quirks: Add quirk for GPD pocket2
counter/ftm-quaddec: Add missing dependencies in Kconfig
staging: iio: adt7316: Fix build errors when GPIOLIB is not set
x86/fpu: Update kernel's FPU state before using for the fsave header
MAINTAINERS: Karthikeyan Ramasubramanian is MIA
i2c: xiic: Add max_read_len quirk
ANDROID: update ABI representation
gpio: pca953x: hack to fix 24 bit gpio expanders
net/mlx5e: Support tagged tunnel over bond
net/mlx5e: Avoid detaching non-existing netdev under switchdev mode
net/mlx5e: Fix source port matching in fdb peer flow rule
net/mlx5e: Replace reciprocal_scale in TX select queue function
net/mlx5e: Add ndo_set_feature for uplink representor
net/mlx5: Avoid reloading already removed devices
net/mlx5: Update pci error handler entries and command translation
RAS/CEC: Convert the timer callback to a workqueue
RAS/CEC: Fix binary search function
x86/mm/KASLR: Compute the size of the vmemmap section properly
can: purge socket error queue on sock destruct
can: flexcan: Remove unneeded registration message
can: af_can: Fix error path of can_init()
can: m_can: implement errata "Needless activation of MRAF irq"
can: mcp251x: add support for mcp25625
dt-bindings: can: mcp251x: add mcp25625 support
can: xilinx_can: use correct bittiming_const for CAN FD core
can: flexcan: fix timeout when set small bitrate
can: usb: Kconfig: Remove duplicate menu entry
lockref: Limit number of cmpxchg loop retries
uaccess: add noop untagged_addr definition
x86/insn-eval: Fix use-after-free access to LDT entry
kbuild: use more portable 'command -v' for cc-cross-prefix
s390/unwind: correct stack switching during unwind
scsi: hpsa: correct ioaccel2 chaining
btrfs: Always trim all unallocated space in btrfs_trim_free_extents
netfilter: ipv6: nf_defrag: accept duplicate fragments again
powerpc/32s: fix booting with CONFIG_PPC_EARLY_DEBUG_BOOTX
drm/meson: fix G12A primary plane disabling
drm/meson: fix primary plane disabling
drm/meson: fix G12A HDMI PLL settings for 4K60 1000/1001 variations
block, bfq: add weight symlink to the bfq.weight cgroup parameter
cgroup: let a symlink too be created with a cftype file
powerpc/64s: __find_linux_pte() synchronization vs pmdp_invalidate()
powerpc/64s: Fix THP PMD collapse serialisation
powerpc: Fix kexec failure on book3s/32
drm/nouveau/secboot/gp10[2467]: support newer FW to fix SEC2 failures on some boards
drm/nouveau/secboot: enable loading of versioned LS PMU/SEC2 ACR msgqueue FW
drm/nouveau/secboot: split out FW version-specific LS function pointers
drm/nouveau/secboot: pass max supported FW version to LS load funcs
drm/nouveau/core: support versioned firmware loading
drm/nouveau/core: pass subdev into nvkm_firmware_get, rather than device
block: free sched's request pool in blk_cleanup_queue
bpf: expand section tests for test_section_names
bpf: more msg_name rewrite tests to test_sock_addr
bpf, bpftool: enable recvmsg attach types
bpf, libbpf: enable recvmsg attach types
bpf: sync tooling uapi header
bpf: fix unconnected udp hooks
vfio/mdev: Synchronize device create/remove with parent removal
vfio/mdev: Avoid creating sysfs remove file on stale device removal
pktgen: do not sleep with the thread lock held.
net: mvpp2: Use strscpy to handle stat strings
net: rds: fix memory leak in rds_ib_flush_mr_pool
ipv6: fix EFAULT on sendto with icmpv6 and hdrincl
ipv6: use READ_ONCE() for inet->hdrincl as in ipv4
soundwire: intel: set dai min and max channels correctly
soundwire: stream: fix bad unlock balance
x86/fpu: Use fault_in_pages_writeable() for pre-faulting
nvme-rdma: use dynamic dma mapping per command
nvme: Fix u32 overflow in the number of namespace list calculation
vfio/mdev: Improve the create/remove sequence
SoC: rt274: Fix internal jack assignment in set_jack callback
ALSA: hdac: fix memory release for SST and SOF drivers
ASoC: SOF: Intel: hda: use the defined ppcap functions
ASoC: core: move DAI pre-links initiation to snd_soc_instantiate_card
ASoC: Intel: cht_bsw_rt5672: fix kernel oops with platform_name override
ASoC: Intel: cht_bsw_nau8824: fix kernel oops with platform_name override
ASoC: Intel: bytcht_es8316: fix kernel oops with platform_name override
ASoC: Intel: cht_bsw_max98090: fix kernel oops with platform_name override
Revert "gfs2: Replace gl_revokes with a GLF flag"
arm64: Silence gcc warnings about arch ABI drift
parisc: Fix crash due alternative coding for NP iopdir_fdc bit
parisc: Use lpa instruction to load physical addresses in driver code
parisc: configs: Remove useless UEVENT_HELPER_PATH
parisc: Use implicit space register selection for loading the coherence index of I/O pdirs
usb: gadget: udc: lpc32xx: fix return value check in lpc32xx_udc_probe()
usb: gadget: dwc2: fix zlp handling
usb: dwc2: Set actual frame number for completed ISOC transfer for none DDMA
usb: gadget: udc: lpc32xx: allocate descriptor with GFP_ATOMIC
usb: gadget: fusb300_udc: Fix memory leak of fusb300->ep[i]
usb: phy: mxs: Disable external charger detect in mxs_phy_hw_init()
usb: dwc2: Fix DMA cache alignment issues
usb: dwc2: host: Fix wMaxPacketSize handling (fix webcam regression)
ARM64: trivial: s/TIF_SECOMP/TIF_SECCOMP/ comment typo fix
drm/komeda: Potential error pointer dereference
drm/komeda: remove set but not used variable 'kcrtc'
x86/CPU: Add more Icelake model numbers
hwmon: (pmbus/core) Treat parameters as paged if on multiple pages
hwmon: (pmbus/core) mutex_lock write in pmbus_set_samples
hwmon: (core) add thermal sensors only if dev->of_node is present
Revert "fib_rules: return 0 directly if an exactly same rule exists when NLM_F_EXCL not supplied"
net: aquantia: fix wol configuration not applied sometimes
ethtool: fix potential userspace buffer overflow
Fix memory leak in sctp_process_init
net: rds: fix memory leak when unload rds_rdma
ipv6: fix the check before getting the cookie in rt6_get_cookie
ipv4: not do cache for local delivery if bc_forwarding is enabled
selftests: vm: Fix test build failure when built by itself
tools: bpftool: Fix JSON output when lookup fails
mmc: also set max_segment_size in the device
mtip32xx: also set max_segment_size in the device
rsxx: don't call dma_set_max_seg_size
nvme-pci: don't limit DMA segement size
s390/qeth: handle error when updating TX queue count
s390/qeth: fix VLAN attribute in bridge_hostnotify udev event
s390/qeth: check dst entry before use
s390/qeth: handle limited IPv4 broadcast in L3 TX path
ceph: fix error handling in ceph_get_caps()
ceph: avoid iput_final() while holding mutex or in dispatch thread
ceph: single workqueue for inode related works
cgroup: css_task_iter_skip()'d iterators must be advanced before accessed
drm/amd/amdgpu: add RLC firmware to support raven1 refresh
drm/amd/powerplay: add set_power_profile_mode for raven1_refresh
drm/amdgpu: fix ring test failure issue during s3 in vce 3.0 (V2)
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lib/test_stackinit: Handle Clang auto-initialization pattern
block: Drop unlikely before IS_ERR(_OR_NULL)
xen/swiotlb: don't initialize swiotlb twice on arm64
s390/mm: fix address space detection in exception handling
HID: logitech-dj: Fix 064d:c52f receiver support
Revert "HID: core: Call request_module before doing device_add"
Revert "HID: core: Do not call request_module() in async context"
Revert "HID: Increase maximum report size allowed by hid_field_extract()"
tests: fix pidfd-test compilation
signal: improve comments
samples: fix pidfd-metadata compilation
arm64: arch_timer: mark functions as __always_inline
arm64: smp: Moved cpu_logical_map[] to smp.h
arm64: cpufeature: Fix missing ZFR0 in __read_sysreg_by_encoding()
selftests/bpf: move test_lirc_mode2_user to TEST_GEN_PROGS_EXTENDED
USB: Fix chipmunk-like voice when using Logitech C270 for recording audio.
USB: usb-storage: Add new ID to ums-realtek
udmabuf: actually unmap the scatterlist
net: fix indirect calls helpers for ptype list hooks.
net: ipvlan: Fix ipvlan device tso disabled while NETIF_F_IP_CSUM is set
scsi: smartpqi: unlock on error in pqi_submit_raid_request_synchronous()
scsi: ufs: Check that space was properly alloced in copy_query_response
udp: only choose unbound UDP socket for multicast when not in a VRF
net/tls: replace the sleeping lock around RX resync with a bit lock
Revert "net/tls: avoid NULL-deref on resync during device removal"
block: aoe: no need to check return value of debugfs_create functions
net: dsa: sja1105: Fix link speed not working at 100 Mbps and below
net: phylink: avoid reducing support mask
scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
kbuild: tar-pkg: enable communication with jobserver
kconfig: tests: fix recursive inclusion unit test
kbuild: teach kselftest-merge to find nested config files
nvmet: fix data_len to 0 for bdev-backed write_zeroes
MAINTAINERS: Hand over skd maintainership
ASoC: sun4i-i2s: Add offset to RX channel select
ASoC: sun4i-i2s: Fix sun8i tx channel offset mask
ASoC: max98090: remove 24-bit format support if RJ is 0
ASoC: da7219: Fix build error without CONFIG_I2C
ASoC: SOF: Intel: hda: Fix COMPILE_TEST build error
drm/arm/hdlcd: Allow a bit of clock tolerance
drm/arm/hdlcd: Actually validate CRTC modes
drm/arm/mali-dp: Add a loop around the second set CVAL and try 5 times
drm/komeda: fixing of DMA mapping sg segment warning
netfilter: ipv6: nf_defrag: fix leakage of unqueued fragments
habanalabs: Read upper bits of trace buffer from RWPHI
arm64: arch_k3: Fix kconfig dependency warning
drm: don't block fb changes for async plane updates
drm/vc4: fix fb references in async update
drm/msm: fix fb references in async update
drm/amd: fix fb references in async update
drm/rockchip: fix fb references in async update
xen-blkfront: switch kcalloc to kvcalloc for large array allocation
drm/mediatek: call mtk_dsi_stop() after mtk_drm_crtc_atomic_disable()
drm/mediatek: clear num_pipes when unbind driver
drm/mediatek: call drm_atomic_helper_shutdown() when unbinding driver
drm/mediatek: unbind components in mtk_drm_unbind()
drm/mediatek: fix unbind functions
net: sfp: read eeprom in maximum 16 byte increments
selftests: set sysctl bc_forwarding properly in router_broadcast.sh
ANDROID: update gki aarch64 ABI representation
net: ethernet: mediatek: Use NET_IP_ALIGN to judge if HW RX_2BYTE_OFFSET is enabled
net: ethernet: mediatek: Use hw_feature to judge if HWLRO is supported
net: ethernet: ti: cpsw_ethtool: fix ethtool ring param set
ANDROID: gki_defconfig: Enable CMA, SLAB_FREELIST (RANDOM and HARDENED) on x86
bpf: udp: Avoid calling reuseport's bpf_prog from udp_gro
bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err
rcu: locking and unlocking need to always be at least barriers
ANDROID: gki_defconfig: enable SLAB_FREELIST_RANDOM, SLAB_FREELIST_HARDENED
ANDROID: gki_defconfig: enable CMA and increase CMA_AREAS
ASoC: SOF: fix DSP oops definitions in FW ABI
ASoC: hda: fix unbalanced codec dev refcount for HDA_DEV_ASOC
ASoC: SOF: ipc: replace fw ready bitfield with explicit bit ordering
ASoC: SOF: bump to ABI 3.6
ASoC: SOF: soundwire: add initial soundwire support
ASoC: SOF: uapi: mirror firmware changes
ASoC: Intel: Baytrail: add quirk for Aegex 10 (RU2) tablet
xfs: inode btree scrubber should calculate im_boffset correctly
mmc: sdhci_am654: Fix SLOTTYPE write
usb: typec: ucsi: ccg: fix memory leak in do_flash
ANDROID: update gki aarch64 ABI representation
habanalabs: Fix virtual address access via debugfs for 2MB pages
drm/komeda: Constify the usage of komeda_component/pipeline/dev_funcs
x86/power: Fix 'nosmt' vs hibernation triple fault during resume
mm/vmalloc: Avoid rare case of flushing TLB with weird arguments
mm/vmalloc: Fix calculation of direct map addr range
PM: sleep: Add kerneldoc comments to some functions
drm/i915/gvt: save RING_HEAD into vreg when vgpu switched out
sparc: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD
mdesc: fix a missing-check bug in get_vdev_port_node_info()
drm/i915/gvt: add F_CMD_ACCESS flag for wa regs
sparc64: Fix regression in non-hypervisor TLB flush xcall
packet: unconditionally free po->rollover
Update my email address
net: hns: Fix loopback test failed at copper ports
Linux 5.2-rc3
net: dsa: mv88e6xxx: avoid error message on remove from VLAN 0
mm, compaction: make sure we isolate a valid PFN
include/linux/generic-radix-tree.h: fix kerneldoc comment
kernel/signal.c: trace_signal_deliver when signal_group_exit
drivers/iommu/intel-iommu.c: fix variable 'iommu' set but not used
spdxcheck.py: fix directory structures
kasan: initialize tag to 0xff in __kasan_kmalloc
z3fold: fix sheduling while atomic
scripts/gdb: fix invocation when CONFIG_COMMON_CLK is not set
mm/gup: continue VM_FAULT_RETRY processing even for pre-faults
ocfs2: fix error path kobject memory leak
memcg: make it work on sparse non-0-node systems
mm, memcg: consider subtrees in memory.events
prctl_set_mm: downgrade mmap_sem to read lock
prctl_set_mm: refactor checks from validate_prctl_map
kernel/fork.c: make max_threads symbol static
arch/arm/boot/compressed/decompress.c: fix build error due to lz4 changes
arch/parisc/configs/c8000_defconfig: remove obsoleted CONFIG_DEBUG_SLAB_LEAK
mm/vmalloc.c: fix typo in comment
lib/sort.c: fix kernel-doc notation warnings
mm: fix Documentation/vm/hmm.rst Sphinx warnings
treewide: fix typos of SPDX-License-Identifier
crypto: ux500 - fix license comment syntax error
MAINTAINERS: add I2C DT bindings to ARM platforms
MAINTAINERS: add DT bindings to i2c drivers
mwifiex: Fix heap overflow in mwifiex_uap_parse_tail_ies()
iwlwifi: mvm: change TLC config cmd sent by rs to be async
iwlwifi: Fix double-free problems in iwl_req_fw_callback()
iwlwifi: fix AX201 killer sku loading firmware issue
iwlwifi: print fseq info upon fw assert
iwlwifi: clear persistence bit according to device family
iwlwifi: fix load in rfkill flow for unified firmware
iwlwifi: mvm: remove d3_sram debugfs file
bpf, riscv: clear high 32 bits for ALU32 add/sub/neg/lsh/rsh/arsh
libbpf: Return btf_fd for load_sk_storage_btf
HID: a4tech: fix horizontal scrolling
HID: hyperv: Add a module description line
net: dsa: sja1105: Don't store frame type in skb->cb
block: print offending values when cloned rq limits are exceeded
blk-mq: Document the blk_mq_hw_queue_to_node() arguments
blk-mq: Fix spelling in a source code comment
block: Fix bsg_setup_queue() kernel-doc header
block: Fix rq_qos_wait() kernel-doc header
block: Fix blk_mq_*_map_queues() kernel-doc headers
block: Fix throtl_pending_timer_fn() kernel-doc header
block: Convert blk_invalidate_devt() header into a non-kernel-doc header
block/partitions/ldm: Convert a kernel-doc header into a non-kernel-doc header
leds: avoid flush_work in atomic context
cgroup: Include dying leaders with live threads in PROCS iterations
cgroup: Implement css_task_iter_skip()
cgroup: Call cgroup_release() before __exit_signal()
netfilter: nf_tables: fix module autoload with inet family
Revert "lockd: Show pid of lockd for remote locks"
ALSA: hda/realtek - Update headset mode for ALC256
fs/adfs: fix filename fixup handling for "/" and "//" names
fs/adfs: move append_filetype_suffix() into adfs_object_fixup()
fs/adfs: remove truncated filename hashing
fs/adfs: factor out filename fixup
fs/adfs: factor out object fixups
fs/adfs: factor out filename case lowering
fs/adfs: factor out filename comparison
ovl: doc: add non-standard corner cases
pstore/ram: Run without kernel crash dump region
MAINTAINERS: add Vasily Gorbik and Christian Borntraeger for s390
MAINTAINERS: Farewell Martin Schwidefsky
pstore: Set tfm to NULL on free_buf_for_compression
nds32: add new emulations for floating point instruction
nds32: Avoid IEX status being incorrectly modified
math-emu: Use statement expressions to fix Wshift-count-overflow warning
net: correct zerocopy refcnt with udp MSG_MORE
ethtool: Check for vlan etype or vlan tci when parsing flow_rule
net: don't clear sock->sk early to avoid trouble in strparser
net-gro: fix use-after-free read in napi_gro_frags()
net: dsa: tag_8021q: Create a stable binary format
net: dsa: tag_8021q: Change order of rx_vid setup
net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value
docs cgroups: add another example size for hugetlb
NFSv4.1: Fix bug only first CB_NOTIFY_LOCK is handled
NFSv4.1: Again fix a race where CB_NOTIFY_LOCK fails to wake a waiter
ipv4: tcp_input: fix stack out of bounds when parsing TCP options.
mlxsw: spectrum: Prevent force of 56G
mlxsw: spectrum_acl: Avoid warning after identical rules insertion
SUNRPC: Fix a use after free when a server rejects the RPCSEC_GSS credential
net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT
SUNRPC fix regression in umount of a secure mount
r8169: fix MAC address being lost in PCI D3
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net: core: support XDP generic on stacked devices.
netvsc: unshare skb in VF rx handler
udp: Avoid post-GRO UDP checksum recalculation
nvme-tcp: fix queue mapping when queue count is limited
nvme-rdma: fix queue mapping when queue count is limited
fpga: zynqmp-fpga: Correctly handle error pointer
selftests: vm: install test_vmalloc.sh for run_vmtests
userfaultfd: selftest: fix compiler warning
kselftest/cgroup: fix incorrect test_core skip
kselftest/cgroup: fix unexpected testing failure on test_core
kselftest/cgroup: fix unexpected testing failure on test_memcontrol
xtensa: Fix section mismatch between memblock_reserve and mem_reserve
signal/ptrace: Don't leak unitialized kernel memory with PTRACE_PEEK_SIGINFO
mwifiex: Abort at too short BSS descriptor element
mwifiex: Fix possible buffer overflows at parsing bss descriptor
drm/i915/gvt: Assign NULL to the pointer after memory free.
drm/i915/gvt: Check if cur_pt_type is valid
x86: intel_epb: Do not build when CONFIG_PM is unset
crypto: hmac - fix memory leak in hmac_init_tfm()
crypto: jitterentropy - change back to module_init()
ARM: dts: Drop bogus CLKSEL for timer12 on dra7
KVM: PPC: Book3S HV: Restore SPRG3 in kvmhv_p9_guest_entry()
KVM: PPC: Book3S HV: Fix lockdep warning when entering guest on POWER9
KVM: PPC: Book3S HV: XIVE: Fix page offset when clearing ESB pages
KVM: PPC: Book3S HV: XIVE: Take the srcu read lock when accessing memslots
KVM: PPC: Book3S HV: XIVE: Do not clear IRQ data of passthrough interrupts
KVM: PPC: Book3S HV: XIVE: Introduce a new mutex for the XIVE device
drm/i915/gvt: Fix cmd length of VEB_DI_IECP
drm/i915/gvt: refine ggtt range validation
drm/i915/gvt: Fix vGPU CSFE_CHICKEN1_REG mmio handler
drm/i915/gvt: Fix GFX_MODE handling
drm/i915/gvt: Update force-to-nonpriv register whitelist
drm/i915/gvt: Initialize intel_gvt_gtt_entry in stack
ima: show rules with IMA_INMASK correctly
evm: check hash algorithm passed to init_desc()
scsi: libsas: delete sas port if expander discover failed
scsi: libsas: only clear phy->in_shutdown after shutdown event done
scsi: scsi_dh_alua: Fix possible null-ptr-deref
scsi: smartpqi: properly set both the DMA mask and the coherent DMA mask
scsi: zfcp: fix to prevent port_remove with pure auto scan LUNs (only sdevs)
scsi: zfcp: fix missing zfcp_port reference put on -EBUSY from port_remove
scsi: libcxgbi: add a check for NULL pointer in cxgbi_check_route()
net: phy: dp83867: Set up RGMII TX delay
net: phy: dp83867: do not call config_init twice
net: phy: dp83867: increase SGMII autoneg timer duration
net: phy: dp83867: fix speed 10 in sgmii mode
net: phy: marvell10g: report if the PHY fails to boot firmware
net: phylink: ensure consistent phy interface mode
cgroup: Use css_tryget() instead of css_tryget_online() in task_get_css()
blk-mq: Fix memory leak in error handling
usbip: usbip_host: fix stub_dev lock context imbalance regression
net: sh_eth: fix mdio access in sh_eth_close() for R-Car Gen2 and RZ/A1 SoCs
MIPS: uprobes: remove set but not used variable 'epc'
s390/crypto: fix possible sleep during spinlock aquired
MIPS: pistachio: Build uImage.gz by default
MIPS: Make virt_addr_valid() return bool
MIPS: Bounds check virt_addr_valid
CIFS: cifs_read_allocate_pages: don't iterate through whole page array on ENOMEM
RDMA/efa: Remove MAYEXEC flag check from mmap flow
mlx5: avoid 64-bit division
IB/hfi1: Validate page aligned for a given virtual address
IB/{qib, hfi1, rdmavt}: Correct ibv_devinfo max_mr value
IB/hfi1: Insure freeze_work work_struct is canceled on shutdown
IB/rdmavt: Fix alloc_qpn() WARN_ON()
ASoC: sun4i-codec: fix first delay on Speaker
drm/amdgpu: reserve stollen vram for raven series
media: venus: hfi_parser: fix a regression in parser
selftests: bpf: fix compiler warning in flow_dissector test
arm64: use the correct function type for __arm64_sys_ni_syscall
arm64: use the correct function type in SYSCALL_DEFINE0
arm64: fix syscall_fn_t type
block: don't protect generic_make_request_checks with blk_queue_enter
block: move blk_exit_queue into __blk_release_queue
selftests: bpf: complete sub-register zero extension checks
selftests: bpf: move sub-register zero extension checks into subreg.c
ovl: detect overlapping layers
drm/i915/icl: Add WaDisableBankHangMode
ALSA: fireface: Use ULL suffixes for 64-bit constants
signal/arm64: Use force_sig not force_sig_fault for SIGKILL
nl80211: fill all policy .type entries
mac80211: free peer keys before vif down in mesh
ANDROID: ABI out: Use the extension .xml rather then .out
drm/mediatek: respect page offset for PRIME mmap calls
drm/mediatek: adjust ddp clock control flow
ALSA: hda/realtek - Improve the headset mic for Acer Aspire laptops
KVM: PPC: Book3S HV: XIVE: Fix the enforced limit on the vCPU identifier
KVM: PPC: Book3S HV: XIVE: Do not test the EQ flag validity when resetting
KVM: PPC: Book3S HV: XIVE: Clear file mapping when device is released
KVM: PPC: Book3S HV: Don't take kvm->lock around kvm_for_each_vcpu
KVM: PPC: Book3S: Use new mutex to synchronize access to rtas token list
KVM: PPC: Book3S HV: Use new mutex to synchronize MMU setup
KVM: PPC: Book3S HV: Avoid touching arch.mmu_ready in XIVE release functions
Revert "drivers: thermal: tsens: Add new operation to check if a sensor is enabled"
net/mlx5e: Disable rxhash when CQE compress is enabled
net/mlx5e: restrict the real_dev of vlan device is the same as uplink device
net/mlx5: Allocate root ns memory using kzalloc to match kfree
net/mlx5: Avoid double free in fs init error unwinding path
net/mlx5: Avoid double free of root ns in the error flow path
net/mlx5: Fix error handling in mlx5_load()
Documentation: net-sysfs: Remove duplicate PHY device documentation
llc: fix skb leak in llc_build_and_send_ui_pkt()
selftests: pmtu: Fix encapsulating device in pmtu_vti6_link_change_mtu
dfs_cache: fix a wrong use of kfree in flush_cache_ent()
fs/cifs/smb2pdu.c: fix buffer free in SMB2_ioctl_free
cifs: fix memory leak of pneg_inbuf on -EOPNOTSUPP ioctl case
xenbus: Avoid deadlock during suspend due to open transactions
xen/pvcalls: Remove set but not used variable
tracing: Avoid memory leak in predicate_parse()
habanalabs: fix bug in checking huge page optimization
mmc: sdhci: Fix SDIO IRQ thread deadlock
dpaa_eth: use only online CPU portals
net: mvneta: Fix err code path of probe
net: stmmac: Do not output error on deferred probe
Btrfs: fix race updating log root item during fsync
Btrfs: fix wrong ctime and mtime of a directory after log replay
ARC: [plat-hsdk] Get rid of inappropriate PHY settings
ARC: [plat-hsdk]: Add support of Vivante GPU
ARC: [plat-hsdk]: enable creg-gpio controller
Btrfs: fix fsync not persisting changed attributes of a directory
btrfs: qgroup: Check bg while resuming relocation to avoid NULL pointer dereference
btrfs: reloc: Also queue orphan reloc tree for cleanup to avoid BUG_ON()
Btrfs: incremental send, fix emission of invalid clone operations
Btrfs: incremental send, fix file corruption when no-holes feature is enabled
btrfs: correct zstd workspace manager lock to use spin_lock_bh()
btrfs: Ensure replaced device doesn't have pending chunk allocation
ia64: fix build errors by exporting paddr_to_nid()
ASoC: SOF: Intel: hda: fix the hda init chip
ASoC: SOF: ipc: fix a race, leading to IPC timeouts
ASoC: SOF: control: correct the copy size for bytes kcontrol put
ASoC: SOF: pcm: remove warning - initialize workqueue on open
ASoC: SOF: pcm: clear hw_params_upon_resume flag correctly
ASoC: SOF: core: fix error handling with the probe workqueue
ASoC: SOF: core: remove snd_soc_unregister_component in case of error
ASoC: SOF: core: remove DSP after unregistering machine driver
ASoC: soc-core: fixup references at soc_cleanup_card_resources()
arm64/module: revert to unsigned interpretation of ABS16/32 relocations
KVM: s390: Do not report unusabled IDs via KVM_CAP_MAX_VCPU_ID
kvm: fix compile on s390 part 2
xprtrdma: Use struct_size() in kzalloc()
tools headers UAPI: Sync kvm.h headers with the kernel sources
perf record: Fix s390 missing module symbol and warning for non-root users
perf machine: Read also the end of the kernel
perf test vmlinux-kallsyms: Ignore aliases to _etext when searching on kallsyms
perf session: Add missing swap ops for namespace events
perf namespace: Protect reading thread's namespace
tools headers UAPI: Sync drm/drm.h with the kernel
s390/crypto: fix gcm-aes-s390 selftest failures
s390/zcrypt: Fix wrong dispatching for control domain CPRBs
s390/pci: fix assignment of bus resources
s390/pci: fix struct definition for set PCI function
s390: mark __cpacf_check_opcode() and cpacf_query_func() as __always_inline
s390: add unreachable() to dump_fault_info() to fix -Wmaybe-uninitialized
tools headers UAPI: Sync drm/i915_drm.h with the kernel
tools headers UAPI: Sync linux/fs.h with the kernel
tools headers UAPI: Sync linux/sched.h with the kernel
tools arch x86: Sync asm/cpufeatures.h with the with the kernel
tools include UAPI: Update copy of files related to new fspick, fsmount, fsconfig, fsopen, move_mount and open_tree syscalls
perf arm64: Fix mksyscalltbl when system kernel headers are ahead of the kernel
perf data: Fix 'strncat may truncate' build failure with recent gcc
arm64: Fix the arm64_personality() syscall wrapper redirection
rtw88: Make some symbols static
rtw88: avoid circular locking between local->iflist_mtx and rtwdev->mutex
rsi: Properly initialize data in rsi_sdio_ta_reset
rtw88: fix unassigned rssi_level in rtw_sta_info
rtw88: fix subscript above array bounds compiler warning
fuse: extract helper for range writeback
fuse: fix copy_file_range() in the writeback case
mmc: meson-gx: fix irq ack
mmc: tmio: fix SCC error handling to avoid false positive CRC error
mmc: tegra: Fix a warning message
memstick: mspro_block: Fix an error code in mspro_block_issue_req()
mac80211: mesh: fix RCU warning
nl80211: fix station_info pertid memory leak
mac80211: Do not use stack memory with scatterlist for GMAC
ALSA: line6: Assure canceling delayed work at disconnection
configfs: Fix use-after-free when accessing sd->s_dentry
ALSA: hda - Force polling mode on CNL for fixing codec communication
i2c: synquacer: fix synquacer_i2c_doxfer() return value
i2c: mlxcpld: Fix wrong initialization order in probe
i2c: dev: fix potential memory leak in i2cdev_ioctl_rdwr
RDMA/core: Fix panic when port_data isn't initialized
RDMA/uverbs: Pass udata on uverbs error unwind
RDMA/core: Clear out the udata before error unwind
net: aquantia: tcp checksum 0xffff being handled incorrectly
net: aquantia: fix LRO with FCS error
net: aquantia: check rx csum for all packets in LRO session
net: aquantia: tx clean budget logic error
vhost: scsi: add weight support
vhost: vsock: add weight support
vhost_net: fix possible infinite loop
vhost: introduce vhost_exceeds_weight()
virtio: Fix indentation of VIRTIO_MMIO
virtio: add unlikely() to WARN_ON_ONCE()
iommu/vt-d: Set the right field for Page Walk Snoop
iommu/vt-d: Fix lock inversion between iommu->lock and device_domain_lock
iommu: Add missing new line for dma type
drm/etnaviv: lock MMU while dumping core
block: Don't revalidate bdev of hidden gendisk
loop: Don't change loop device under exclusive opener
drm/imx: ipuv3-plane: fix atomic update status query for non-plus i.MX6Q
drm/qxl: drop WARN_ONCE()
iio: temperature: mlx90632 Relax the compatibility check
iio: imu: st_lsm6dsx: fix PM support for st_lsm6dsx i2c controller
staging:iio:ad7150: fix threshold mode config bit
fuse: add FUSE_WRITE_KILL_PRIV
fuse: fallocate: fix return with locked inode
PCI: PM: Avoid possible suspend-to-idle issue
ACPI: PM: Call pm_set_suspend_via_firmware() during hibernation
ACPI/PCI: PM: Add missing wakeup.flags.valid checks
ovl: support the FS_IOC_FS[SG]ETXATTR ioctls
soundwire: stream: fix out of boundary access on port properties
net: tulip: de4x5: Drop redundant MODULE_DEVICE_TABLE()
selftests/tls: add test for sleeping even though there is data
net/tls: fix no wakeup on partial reads
selftests/tls: test for lowat overshoot with multiple records
net/tls: fix lowat calculation if some data came from previous record
dpaa2-eth: Make constant 64-bit long
dpaa2-eth: Use PTR_ERR_OR_ZERO where appropriate
dpaa2-eth: Fix potential spectre issue
bonding/802.3ad: fix slave link initialization transition states
io_uring: Fix __io_uring_register() false success
net: ethtool: Document get_rxfh_context and set_rxfh_context ethtool ops
net: stmmac: dwmac-mediatek: modify csr_clk value to fix mdio read/write fail
net: stmmac: fix csr_clk can't be zero issue
net: stmmac: update rx tail pointer register to fix rx dma hang issue.
ip_sockglue: Fix missing-check bug in ip_ra_control()
ipv6_sockglue: Fix a missing-check bug in ip6_ra_control()
efi: Allow the number of EFI configuration tables entries to be zero
efi/x86/Add missing error handling to old_memmap 1:1 mapping code
parisc: Fix compiler warnings in float emulation code
parisc/slab: cleanup after /proc/slab_allocators removal
bpf: sockmap, fix use after free from sleep in psock backlog workqueue
net: sched: don't use tc_action->order during action dump
cxgb4: Revert "cxgb4: Remove SGE_HOST_PAGE_SIZE dependency on page size"
net: fec: fix the clk mismatch in failed_reset path
habanalabs: Avoid using a non-initialized MMU cache mutex
habanalabs: fix debugfs code
uapi/habanalabs: add opcode for enable/disable device debug mode
habanalabs: halt debug engines on user process close
selftests: rtc: rtctest: specify timeouts
selftests/harness: Allow test to configure timeout
selftests/ftrace: Add checkbashisms meta-testcase
selftests/ftrace: Make a script checkbashisms clean
media: smsusb: better handle optional alignment
test_firmware: Use correct snprintf() limit
genwqe: Prevent an integer overflow in the ioctl
parport: Fix mem leak in parport_register_dev_model
fpga: dfl: expand minor range when registering chrdev region
fpga: dfl: Add lockdep classes for pdata->lock
fpga: dfl: afu: Pass the correct device to dma_mapping_error()
fpga: stratix10-soc: fix use-after-free on s10_init()
w1: ds2408: Fix typo after 49695ac468
(reset on output_write retry with readback)
kheaders: Do not regenerate archive if config is not changed
kheaders: Move from proc to sysfs
drm/amd/display: Don't load DMCU for Raven 1 (v2)
drm/i915: Maintain consistent documentation subsection ordering
scripts/sphinx-pre-install: make it handle Sphinx versions
docs: Fix conf.py for Sphinx 2.0
vt/fbcon: deinitialize resources in visual_init() after failed memory allocation
xfs: fix broken log reservation debugging
clocksource/drivers/timer-ti-dm: Change to new style declaration
ASoC: core: lock client_mutex while removing link components
ASoC: simple-card: Restore original configuration of DAI format
{nl,mac}80211: allow 4addr AP operation on crypto controlled devices
mac80211_hwsim: mark expected switch fall-through
mac80211: fix rate reporting inside cfg80211_calculate_bitrate_he()
mac80211: remove set but not used variable 'old'
mac80211: handle deauthentication/disassociation from TDLS peer
gpio: fix gpio-adp5588 build errors
pinctrl: stmfx: Fix compile issue when CONFIG_OF_GPIO is not defined
staging: kpc2000: Add dependency on MFD_CORE to kconfig symbol 'KPC2000'
perf/ring-buffer: Use regular variables for nesting
perf/ring-buffer: Always use {READ,WRITE}_ONCE() for rb->user_page data
perf/ring_buffer: Add ordering to rb->nest increment
perf/ring_buffer: Fix exposing a temporarily decreased data_head
x86/CPU/AMD: Don't force the CPB cap when running under a hypervisor
x86/boot: Provide KASAN compatible aliases for string routines
ALSA: hda/realtek - Enable micmute LED for Huawei laptops
Input: uinput - add compat ioctl number translation for UI_*_FF_UPLOAD
Input: silead - add MSSL0017 to acpi_device_id
cxgb4: offload VLAN flows regardless of VLAN ethtype
hsr: fix don't prune the master node from the node_db
net: mvpp2: cls: Fix leaked ethtool_rx_flow_rule
docs: fix multiple doc build warnings in enumeration.rst
lib/list_sort: fix kerneldoc build error
docs: fix numaperf.rst and add it to the doc tree
doc: Cope with the deprecation of AutoReporter
doc: Cope with Sphinx logging deprecations
bpf: sockmap, restore sk_write_space when psock gets dropped
selftests: bpf: add zero extend checks for ALU32 and/or/xor
bpf, riscv: clear target register high 32-bits for and/or/xor on ALU32
spi: abort spi_sync if failed to prepare_transfer_hardware
ALSA: hda/realtek - Set default power save node to 0
ipv4/igmp: fix build error if !CONFIG_IP_MULTICAST
powerpc/kexec: Fix loading of kernel + initramfs with kexec_file_load()
MIPS: TXx9: Fix boot crash in free_initmem()
MIPS: remove a space after -I to cope with header search paths for VDSO
MIPS: mark ginvt() as __always_inline
ipv4/igmp: fix another memory leak in igmpv3_del_delrec()
bnxt_en: Device serial number is supported only for PFs.
bnxt_en: Reduce memory usage when running in kdump kernel.
bnxt_en: Fix possible BUG() condition when calling pci_disable_msix().
bnxt_en: Fix aggregation buffer leak under OOM condition.
ipv6: Fix redirect with VRF
net: stmmac: fix reset gpio free missing
mISDN: make sure device name is NUL terminated
net: macb: save/restore the remaining registers and features
media: dvb: warning about dvb frequency limits produces too much noise
net/tls: don't ignore netdev notifications if no TLS features
net/tls: fix state removal with feature flags off
net/tls: avoid NULL-deref on resync during device removal
Documentation: add TLS offload documentation
Documentation: tls: RSTify the ktls documentation
Documentation: net: move device drivers docs to a submenu
mISDN: Fix indenting in dsp_cmx.c
ocelot: Dont allocate another multicast list, use __dev_mc_sync
Validate required parameters in inet6_validate_link_af
xhci: Use %zu for printing size_t type
xhci: Convert xhci_handshake() to use readl_poll_timeout_atomic()
xhci: Fix immediate data transfer if buffer is already DMA mapped
usb: xhci: avoid null pointer deref when bos field is NULL
usb: xhci: Fix a potential null pointer dereference in xhci_debugfs_create_endpoint()
xhci: update bounce buffer with correct sg num
media: usb: siano: Fix false-positive "uninitialized variable" warning
spi: spi-fsl-spi: call spi_finalize_current_message() at the end
ALSA: hda/realtek - Check headset type by unplug and resume
powerpc/perf: Fix MMCRA corruption by bhrb_filter
powerpc/powernv: Return for invalid IMC domain
HID: logitech-hidpp: Add support for the S510 remote control
HID: multitouch: handle faulty Elo touch device
selftests: netfilter: add flowtable test script
netfilter: nft_flow_offload: IPCB is only valid for ipv4 family
netfilter: nft_flow_offload: don't offload when sequence numbers need adjustment
netfilter: nft_flow_offload: set liberal tracking mode for tcp
netfilter: nf_flow_table: ignore DF bit setting
ASoC: Intel: sof-rt5682: fix AMP quirk support
ASoC: Intel: sof-rt5682: fix for codec button mapping
clk: ti: clkctrl: Fix clkdm_clk handling
clk: imx: imx8mm: fix int pll clk gate
clk: sifive: restrict Kconfig scope for the FU540 PRCI driver
RDMA/hns: Fix PD memory leak for internal allocation
netfilter: nat: fix udp checksum corruption
selftests: netfilter: missing error check when setting up veth interface
RDMA/srp: Rename SRP sysfs name after IB device rename trigger
ipvs: Fix use-after-free in ip_vs_in
ARC: [plat-hsdk]: Add missing FIFO size entry in GMAC node
ARC: [plat-hsdk]: Add missing multicast filter bins number to GMAC node
samples, bpf: suppress compiler warning
samples, bpf: fix to change the buffer size for read()
bpf: Check sk_fullsock() before returning from bpf_sk_lookup()
bpf: fix out-of-bounds read in __bpf_skc_lookup
Documentation/networking: fix af_xdp.rst Sphinx warnings
netfilter: nft_fib: Fix existence check support
netfilter: nf_queue: fix reinject verdict handling
dmaengine: sprd: Add interrupt support for 2-stage transfer
dmaengine: sprd: Fix the right place to configure 2-stage transfer
dmaengine: sprd: Fix block length overflow
dmaengine: sprd: Fix the incorrect start for 2-stage destination channels
dmaengine: sprd: Add validation of current descriptor in irq handler
dmaengine: sprd: Fix the possible crash when getting descriptor status
tty: max310x: Fix external crystal register setup
serial: sh-sci: disable DMA for uart_console
serial: imx: remove log spamming error message
tty: serial: msm_serial: Fix XON/XOFF
USB: serial: option: add Telit 0x1260 and 0x1261 compositions
USB: serial: pl2303: add Allied Telesis VT-Kit3
USB: serial: option: add support for Simcom SIM7500/SIM7600 RNDIS mode
dmaengine: tegra210-adma: Fix spelling
dmaengine: tegra210-adma: Fix channel FIFO configuration
dmaengine: tegra210-adma: Fix crash during probe
dmaengine: mediatek-cqdma: sleeping in atomic context
dmaengine: dw-axi-dmac: fix null dereference when pointer first is null
perf/x86/intel/ds: Fix EVENT vs. UEVENT PEBS constraints
USB: rio500: update Documentation
USB: rio500: simplify locking
USB: rio500: fix memory leak in close after disconnect
USB: rio500: refuse more than one device at a time
usbip: usbip_host: fix BUG: sleeping function called from invalid context
USB: sisusbvga: fix oops in error path of sisusb_probe
USB: Add LPM quirk for Surface Dock GigE adapter
media: usb: siano: Fix general protection fault in smsusb
usb: mtu3: fix up undefined reference to usb_debug_root
USB: Fix slab-out-of-bounds write in usb_get_bos_descriptor
Input: elantech - enable middle button support on 2 ThinkPads
dmaengine: fsl-qdma: Add improvement
dmaengine: jz4780: Fix transfers being ACKed too soon
gcc-plugins: Fix build failures under Darwin host
MAINTAINERS: Update Stefan Wahren email address
netfilter: nf_tables: fix oops during rule dump
ARC: mm: SIGSEGV userspace trying to access kernel virtual memory
ARC: fix build warnings
ARM: dts: bcm: Add missing device_type = "memory" property
soc: bcm: brcmstb: biuctrl: Register writes require a barrier
soc: brcmstb: Fix error path for unsupported CPUs
ARM: dts: dra71x: Disable usb4_tm target module
ARM: dts: dra71x: Disable rtc target module
ARM: dts: dra76x: Disable usb4_tm target module
ARM: dts: dra76x: Disable rtc target module
ASoC: simple-card: Fix configuration of DAI format
ASoC: Intel: soc-acpi: Fix machine selection order
ASoC: rt5677-spi: Handle over reading when flipping bytes
ASoC: soc-dpm: fixup DAI active unbalance
pinctrl: intel: Clear interrupt status in mask/unmask callback
pinctrl: intel: Use GENMASK() consistently
parisc: Allow building 64-bit kernel without -mlong-calls compiler option
parisc: Kconfig: remove ARCH_DISCARD_MEMBLOCK
staging: wilc1000: Fix some double unlock bugs in wilc_wlan_cleanup()
staging: vc04_services: prevent integer overflow in create_pagelist()
Staging: vc04_services: Fix a couple error codes
staging: wlan-ng: fix adapter initialization failure
staging: kpc2000: double unlock in error handling in kpc_dma_transfer()
staging: kpc2000: Fix build error without CONFIG_UIO
staging: kpc2000: fix build error on xtensa
staging: erofs: set sb->s_root to NULL when failing from __getname()
ARM: imx: cpuidle-imx6sx: Restrict the SW2ISO increase to i.MX6SX
firmware: imx: SCU irq should ONLY be enabled after SCU IPC is ready
arm64: imx: Fix build error without CONFIG_SOC_BUS
ima: fix wrong signed policy requirement when not appraising
x86/ima: Check EFI_RUNTIME_SERVICES before using
stacktrace: Unbreak stack_trace_save_tsk_reliable()
HID: wacom: Sync INTUOSP2_BT touch state after each frame if necessary
HID: wacom: Correct button numbering 2nd-gen Intuos Pro over Bluetooth
HID: wacom: Send BTN_TOUCH in response to INTUOSP2_BT eraser contact
HID: wacom: Don't report anything prior to the tool entering range
HID: wacom: Don't set tool type until we're in range
ASoC: cs42xx8: Add regcache mask dirty
regulator: tps6507x: Fix boot regression due to testing wrong init_data pointer
ASoC: fsl_asrc: Fix the issue about unsupported rate
spi: bitbang: Fix NULL pointer dereference in spi_unregister_master
Input: elan_i2c - increment wakeup count if wake source
wireless: Skip directory when generating certificates
ASoC: ak4458: rstn_control - return a non-zero on error only
ASoC: soc-pcm: BE dai needs prepare when pause release after resume
ASoC: ak4458: add return value for ak4458_probe
ASoC : cs4265 : readable register too low
ASoC: SOF: fix error in verbose ipc command parsing
ASoC: SOF: fix race in FW boot timeout handling
ASoC: SOF: nocodec: fix undefined reference
iio: adc: ti-ads8688: fix timestamp is not updated in buffer
iio: dac: ds4422/ds4424 fix chip verification
HID: rmi: Use SET_REPORT request on control endpoint for Acer Switch 3 and 5
HID: logitech-hidpp: add support for the MX5500 keyboard
HID: logitech-dj: add support for the Logitech MX5500's Bluetooth Mini-Receiver
HID: i2c-hid: add iBall Aer3 to descriptor override
spi: Fix Raspberry Pi breakage
ARM: dts: dra76x: Update MMC2_HS200_MANUAL1 iodelay values
ARM: dts: am57xx-idk: Remove support for voltage switching for SD card
bus: ti-sysc: Handle devices with no control registers
ARM: dts: Configure osc clock for d_can on am335x
iio: imu: mpu6050: Fix FIFO layout for ICM20602
lkdtm/bugs: Adjust recursion test to avoid elision
lkdtm/usercopy: Moves the KERNEL_DS test to non-canonical
iio: adc: ads124: avoid buffer overflow
iio: adc: modify NPCM ADC read reference voltage
Change-Id: I98c823993370027391cc21dfb239c3049f025136
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>
2324 lines
60 KiB
C
2324 lines
60 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright(c) 2007 Intel Corporation. All rights reserved.
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* Copyright(c) 2008 Red Hat, Inc. All rights reserved.
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* Copyright(c) 2008 Mike Christie
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*
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* Maintained at www.Open-FCoE.org
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/scatterlist.h>
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#include <linux/err.h>
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#include <linux/crc32.h>
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#include <linux/slab.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/fc/fc_fc2.h>
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#include <scsi/libfc.h>
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#include <scsi/fc_encode.h>
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#include "fc_libfc.h"
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static struct kmem_cache *scsi_pkt_cachep;
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/* SRB state definitions */
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#define FC_SRB_FREE 0 /* cmd is free */
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#define FC_SRB_CMD_SENT (1 << 0) /* cmd has been sent */
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#define FC_SRB_RCV_STATUS (1 << 1) /* response has arrived */
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#define FC_SRB_ABORT_PENDING (1 << 2) /* cmd abort sent to device */
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#define FC_SRB_ABORTED (1 << 3) /* abort acknowledged */
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#define FC_SRB_DISCONTIG (1 << 4) /* non-sequential data recvd */
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#define FC_SRB_COMPL (1 << 5) /* fc_io_compl has been run */
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#define FC_SRB_FCP_PROCESSING_TMO (1 << 6) /* timer function processing */
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#define FC_SRB_READ (1 << 1)
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#define FC_SRB_WRITE (1 << 0)
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/*
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* The SCp.ptr should be tested and set under the scsi_pkt_queue lock
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*/
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#define CMD_SP(Cmnd) ((struct fc_fcp_pkt *)(Cmnd)->SCp.ptr)
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#define CMD_ENTRY_STATUS(Cmnd) ((Cmnd)->SCp.have_data_in)
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#define CMD_COMPL_STATUS(Cmnd) ((Cmnd)->SCp.this_residual)
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#define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
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#define CMD_RESID_LEN(Cmnd) ((Cmnd)->SCp.buffers_residual)
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/**
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* struct fc_fcp_internal - FCP layer internal data
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* @scsi_pkt_pool: Memory pool to draw FCP packets from
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* @scsi_queue_lock: Protects the scsi_pkt_queue
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* @scsi_pkt_queue: Current FCP packets
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* @last_can_queue_ramp_down_time: ramp down time
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* @last_can_queue_ramp_up_time: ramp up time
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* @max_can_queue: max can_queue size
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*/
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struct fc_fcp_internal {
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mempool_t *scsi_pkt_pool;
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spinlock_t scsi_queue_lock;
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struct list_head scsi_pkt_queue;
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unsigned long last_can_queue_ramp_down_time;
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unsigned long last_can_queue_ramp_up_time;
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int max_can_queue;
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};
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#define fc_get_scsi_internal(x) ((struct fc_fcp_internal *)(x)->scsi_priv)
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/*
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* function prototypes
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* FC scsi I/O related functions
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*/
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static void fc_fcp_recv_data(struct fc_fcp_pkt *, struct fc_frame *);
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static void fc_fcp_recv(struct fc_seq *, struct fc_frame *, void *);
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static void fc_fcp_resp(struct fc_fcp_pkt *, struct fc_frame *);
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static void fc_fcp_complete_locked(struct fc_fcp_pkt *);
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static void fc_tm_done(struct fc_seq *, struct fc_frame *, void *);
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static void fc_fcp_error(struct fc_fcp_pkt *, struct fc_frame *);
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static void fc_fcp_recovery(struct fc_fcp_pkt *, u8 code);
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static void fc_fcp_timeout(struct timer_list *);
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static void fc_fcp_rec(struct fc_fcp_pkt *);
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static void fc_fcp_rec_error(struct fc_fcp_pkt *, struct fc_frame *);
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static void fc_fcp_rec_resp(struct fc_seq *, struct fc_frame *, void *);
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static void fc_io_compl(struct fc_fcp_pkt *);
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static void fc_fcp_srr(struct fc_fcp_pkt *, enum fc_rctl, u32);
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static void fc_fcp_srr_resp(struct fc_seq *, struct fc_frame *, void *);
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static void fc_fcp_srr_error(struct fc_fcp_pkt *, struct fc_frame *);
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/*
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* command status codes
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*/
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#define FC_COMPLETE 0
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#define FC_CMD_ABORTED 1
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#define FC_CMD_RESET 2
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#define FC_CMD_PLOGO 3
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#define FC_SNS_RCV 4
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#define FC_TRANS_ERR 5
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#define FC_DATA_OVRRUN 6
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#define FC_DATA_UNDRUN 7
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#define FC_ERROR 8
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#define FC_HRD_ERROR 9
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#define FC_CRC_ERROR 10
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#define FC_TIMED_OUT 11
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#define FC_TRANS_RESET 12
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/*
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* Error recovery timeout values.
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*/
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#define FC_SCSI_TM_TOV (10 * HZ)
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#define FC_HOST_RESET_TIMEOUT (30 * HZ)
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#define FC_CAN_QUEUE_PERIOD (60 * HZ)
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#define FC_MAX_ERROR_CNT 5
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#define FC_MAX_RECOV_RETRY 3
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#define FC_FCP_DFLT_QUEUE_DEPTH 32
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/**
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* fc_fcp_pkt_alloc() - Allocate a fcp_pkt
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* @lport: The local port that the FCP packet is for
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* @gfp: GFP flags for allocation
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*
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* Return value: fcp_pkt structure or null on allocation failure.
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* Context: Can be called from process context, no lock is required.
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*/
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static struct fc_fcp_pkt *fc_fcp_pkt_alloc(struct fc_lport *lport, gfp_t gfp)
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{
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struct fc_fcp_internal *si = fc_get_scsi_internal(lport);
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struct fc_fcp_pkt *fsp;
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fsp = mempool_alloc(si->scsi_pkt_pool, gfp);
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if (fsp) {
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memset(fsp, 0, sizeof(*fsp));
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fsp->lp = lport;
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fsp->xfer_ddp = FC_XID_UNKNOWN;
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refcount_set(&fsp->ref_cnt, 1);
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timer_setup(&fsp->timer, NULL, 0);
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INIT_LIST_HEAD(&fsp->list);
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spin_lock_init(&fsp->scsi_pkt_lock);
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} else {
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per_cpu_ptr(lport->stats, get_cpu())->FcpPktAllocFails++;
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put_cpu();
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}
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return fsp;
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}
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/**
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* fc_fcp_pkt_release() - Release hold on a fcp_pkt
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* @fsp: The FCP packet to be released
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*
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* Context: Can be called from process or interrupt context,
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* no lock is required.
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*/
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static void fc_fcp_pkt_release(struct fc_fcp_pkt *fsp)
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{
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if (refcount_dec_and_test(&fsp->ref_cnt)) {
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struct fc_fcp_internal *si = fc_get_scsi_internal(fsp->lp);
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mempool_free(fsp, si->scsi_pkt_pool);
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}
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}
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/**
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* fc_fcp_pkt_hold() - Hold a fcp_pkt
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* @fsp: The FCP packet to be held
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*/
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static void fc_fcp_pkt_hold(struct fc_fcp_pkt *fsp)
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{
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refcount_inc(&fsp->ref_cnt);
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}
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/**
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* fc_fcp_pkt_destroy() - Release hold on a fcp_pkt
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* @seq: The sequence that the FCP packet is on (required by destructor API)
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* @fsp: The FCP packet to be released
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*
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* This routine is called by a destructor callback in the fc_exch_seq_send()
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* routine of the libfc Transport Template. The 'struct fc_seq' is a required
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* argument even though it is not used by this routine.
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*
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* Context: No locking required.
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*/
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static void fc_fcp_pkt_destroy(struct fc_seq *seq, void *fsp)
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{
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fc_fcp_pkt_release(fsp);
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}
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/**
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* fc_fcp_lock_pkt() - Lock a fcp_pkt and increase its reference count
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* @fsp: The FCP packet to be locked and incremented
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*
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* We should only return error if we return a command to SCSI-ml before
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* getting a response. This can happen in cases where we send a abort, but
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* do not wait for the response and the abort and command can be passing
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* each other on the wire/network-layer.
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*
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* Note: this function locks the packet and gets a reference to allow
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* callers to call the completion function while the lock is held and
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* not have to worry about the packets refcount.
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*
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* TODO: Maybe we should just have callers grab/release the lock and
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* have a function that they call to verify the fsp and grab a ref if
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* needed.
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*/
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static inline int fc_fcp_lock_pkt(struct fc_fcp_pkt *fsp)
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{
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spin_lock_bh(&fsp->scsi_pkt_lock);
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if (fsp->state & FC_SRB_COMPL) {
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spin_unlock_bh(&fsp->scsi_pkt_lock);
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return -EPERM;
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}
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fc_fcp_pkt_hold(fsp);
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return 0;
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}
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/**
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* fc_fcp_unlock_pkt() - Release a fcp_pkt's lock and decrement its
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* reference count
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* @fsp: The FCP packet to be unlocked and decremented
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*/
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static inline void fc_fcp_unlock_pkt(struct fc_fcp_pkt *fsp)
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{
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spin_unlock_bh(&fsp->scsi_pkt_lock);
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fc_fcp_pkt_release(fsp);
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}
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/**
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* fc_fcp_timer_set() - Start a timer for a fcp_pkt
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* @fsp: The FCP packet to start a timer for
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* @delay: The timeout period in jiffies
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*/
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static void fc_fcp_timer_set(struct fc_fcp_pkt *fsp, unsigned long delay)
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{
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if (!(fsp->state & FC_SRB_COMPL)) {
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mod_timer(&fsp->timer, jiffies + delay);
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fsp->timer_delay = delay;
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}
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}
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static void fc_fcp_abort_done(struct fc_fcp_pkt *fsp)
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{
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fsp->state |= FC_SRB_ABORTED;
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fsp->state &= ~FC_SRB_ABORT_PENDING;
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if (fsp->wait_for_comp)
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complete(&fsp->tm_done);
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else
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fc_fcp_complete_locked(fsp);
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}
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/**
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* fc_fcp_send_abort() - Send an abort for exchanges associated with a
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* fcp_pkt
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* @fsp: The FCP packet to abort exchanges on
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*/
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static int fc_fcp_send_abort(struct fc_fcp_pkt *fsp)
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{
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int rc;
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if (!fsp->seq_ptr)
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return -EINVAL;
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per_cpu_ptr(fsp->lp->stats, get_cpu())->FcpPktAborts++;
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put_cpu();
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fsp->state |= FC_SRB_ABORT_PENDING;
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rc = fc_seq_exch_abort(fsp->seq_ptr, 0);
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/*
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* fc_seq_exch_abort() might return -ENXIO if
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* the sequence is already completed
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*/
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if (rc == -ENXIO) {
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fc_fcp_abort_done(fsp);
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rc = 0;
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}
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return rc;
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}
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/**
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* fc_fcp_retry_cmd() - Retry a fcp_pkt
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* @fsp: The FCP packet to be retried
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*
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* Sets the status code to be FC_ERROR and then calls
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* fc_fcp_complete_locked() which in turn calls fc_io_compl().
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* fc_io_compl() will notify the SCSI-ml that the I/O is done.
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* The SCSI-ml will retry the command.
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*/
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static void fc_fcp_retry_cmd(struct fc_fcp_pkt *fsp, int status_code)
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{
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if (fsp->seq_ptr) {
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fc_exch_done(fsp->seq_ptr);
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fsp->seq_ptr = NULL;
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}
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fsp->state &= ~FC_SRB_ABORT_PENDING;
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fsp->io_status = 0;
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fsp->status_code = status_code;
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fc_fcp_complete_locked(fsp);
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}
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/**
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* fc_fcp_ddp_setup() - Calls a LLD's ddp_setup routine to set up DDP context
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* @fsp: The FCP packet that will manage the DDP frames
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* @xid: The XID that will be used for the DDP exchange
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*/
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void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid)
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{
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struct fc_lport *lport;
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lport = fsp->lp;
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if ((fsp->req_flags & FC_SRB_READ) &&
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(lport->lro_enabled) && (lport->tt.ddp_setup)) {
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if (lport->tt.ddp_setup(lport, xid, scsi_sglist(fsp->cmd),
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scsi_sg_count(fsp->cmd)))
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fsp->xfer_ddp = xid;
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}
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}
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/**
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* fc_fcp_ddp_done() - Calls a LLD's ddp_done routine to release any
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* DDP related resources for a fcp_pkt
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* @fsp: The FCP packet that DDP had been used on
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*/
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void fc_fcp_ddp_done(struct fc_fcp_pkt *fsp)
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{
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struct fc_lport *lport;
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if (!fsp)
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return;
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if (fsp->xfer_ddp == FC_XID_UNKNOWN)
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return;
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lport = fsp->lp;
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if (lport->tt.ddp_done) {
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fsp->xfer_len = lport->tt.ddp_done(lport, fsp->xfer_ddp);
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fsp->xfer_ddp = FC_XID_UNKNOWN;
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}
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}
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/**
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* fc_fcp_can_queue_ramp_up() - increases can_queue
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* @lport: lport to ramp up can_queue
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*/
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static void fc_fcp_can_queue_ramp_up(struct fc_lport *lport)
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{
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struct fc_fcp_internal *si = fc_get_scsi_internal(lport);
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unsigned long flags;
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int can_queue;
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spin_lock_irqsave(lport->host->host_lock, flags);
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if (si->last_can_queue_ramp_up_time &&
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(time_before(jiffies, si->last_can_queue_ramp_up_time +
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FC_CAN_QUEUE_PERIOD)))
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goto unlock;
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if (time_before(jiffies, si->last_can_queue_ramp_down_time +
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FC_CAN_QUEUE_PERIOD))
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goto unlock;
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si->last_can_queue_ramp_up_time = jiffies;
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can_queue = lport->host->can_queue << 1;
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if (can_queue >= si->max_can_queue) {
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can_queue = si->max_can_queue;
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si->last_can_queue_ramp_down_time = 0;
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}
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lport->host->can_queue = can_queue;
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shost_printk(KERN_ERR, lport->host, "libfc: increased "
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"can_queue to %d.\n", can_queue);
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|
unlock:
|
|
spin_unlock_irqrestore(lport->host->host_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_can_queue_ramp_down() - reduces can_queue
|
|
* @lport: lport to reduce can_queue
|
|
*
|
|
* If we are getting memory allocation failures, then we may
|
|
* be trying to execute too many commands. We let the running
|
|
* commands complete or timeout, then try again with a reduced
|
|
* can_queue. Eventually we will hit the point where we run
|
|
* on all reserved structs.
|
|
*/
|
|
static bool fc_fcp_can_queue_ramp_down(struct fc_lport *lport)
|
|
{
|
|
struct fc_fcp_internal *si = fc_get_scsi_internal(lport);
|
|
unsigned long flags;
|
|
int can_queue;
|
|
bool changed = false;
|
|
|
|
spin_lock_irqsave(lport->host->host_lock, flags);
|
|
|
|
if (si->last_can_queue_ramp_down_time &&
|
|
(time_before(jiffies, si->last_can_queue_ramp_down_time +
|
|
FC_CAN_QUEUE_PERIOD)))
|
|
goto unlock;
|
|
|
|
si->last_can_queue_ramp_down_time = jiffies;
|
|
|
|
can_queue = lport->host->can_queue;
|
|
can_queue >>= 1;
|
|
if (!can_queue)
|
|
can_queue = 1;
|
|
lport->host->can_queue = can_queue;
|
|
changed = true;
|
|
|
|
unlock:
|
|
spin_unlock_irqrestore(lport->host->host_lock, flags);
|
|
return changed;
|
|
}
|
|
|
|
/*
|
|
* fc_fcp_frame_alloc() - Allocates fc_frame structure and buffer.
|
|
* @lport: fc lport struct
|
|
* @len: payload length
|
|
*
|
|
* Allocates fc_frame structure and buffer but if fails to allocate
|
|
* then reduce can_queue.
|
|
*/
|
|
static inline struct fc_frame *fc_fcp_frame_alloc(struct fc_lport *lport,
|
|
size_t len)
|
|
{
|
|
struct fc_frame *fp;
|
|
|
|
fp = fc_frame_alloc(lport, len);
|
|
if (likely(fp))
|
|
return fp;
|
|
|
|
per_cpu_ptr(lport->stats, get_cpu())->FcpFrameAllocFails++;
|
|
put_cpu();
|
|
/* error case */
|
|
fc_fcp_can_queue_ramp_down(lport);
|
|
shost_printk(KERN_ERR, lport->host,
|
|
"libfc: Could not allocate frame, "
|
|
"reducing can_queue to %d.\n", lport->host->can_queue);
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* get_fsp_rec_tov() - Helper function to get REC_TOV
|
|
* @fsp: the FCP packet
|
|
*
|
|
* Returns rec tov in jiffies as rpriv->e_d_tov + 1 second
|
|
*/
|
|
static inline unsigned int get_fsp_rec_tov(struct fc_fcp_pkt *fsp)
|
|
{
|
|
struct fc_rport_libfc_priv *rpriv = fsp->rport->dd_data;
|
|
unsigned int e_d_tov = FC_DEF_E_D_TOV;
|
|
|
|
if (rpriv && rpriv->e_d_tov > e_d_tov)
|
|
e_d_tov = rpriv->e_d_tov;
|
|
return msecs_to_jiffies(e_d_tov) + HZ;
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_recv_data() - Handler for receiving SCSI-FCP data from a target
|
|
* @fsp: The FCP packet the data is on
|
|
* @fp: The data frame
|
|
*/
|
|
static void fc_fcp_recv_data(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
|
|
{
|
|
struct scsi_cmnd *sc = fsp->cmd;
|
|
struct fc_lport *lport = fsp->lp;
|
|
struct fc_stats *stats;
|
|
struct fc_frame_header *fh;
|
|
size_t start_offset;
|
|
size_t offset;
|
|
u32 crc;
|
|
u32 copy_len = 0;
|
|
size_t len;
|
|
void *buf;
|
|
struct scatterlist *sg;
|
|
u32 nents;
|
|
u8 host_bcode = FC_COMPLETE;
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
offset = ntohl(fh->fh_parm_offset);
|
|
start_offset = offset;
|
|
len = fr_len(fp) - sizeof(*fh);
|
|
buf = fc_frame_payload_get(fp, 0);
|
|
|
|
/*
|
|
* if this I/O is ddped then clear it and initiate recovery since data
|
|
* frames are expected to be placed directly in that case.
|
|
*
|
|
* Indicate error to scsi-ml because something went wrong with the
|
|
* ddp handling to get us here.
|
|
*/
|
|
if (fsp->xfer_ddp != FC_XID_UNKNOWN) {
|
|
fc_fcp_ddp_done(fsp);
|
|
FC_FCP_DBG(fsp, "DDP I/O in fc_fcp_recv_data set ERROR\n");
|
|
host_bcode = FC_ERROR;
|
|
goto err;
|
|
}
|
|
if (offset + len > fsp->data_len) {
|
|
/* this should never happen */
|
|
if ((fr_flags(fp) & FCPHF_CRC_UNCHECKED) &&
|
|
fc_frame_crc_check(fp))
|
|
goto crc_err;
|
|
FC_FCP_DBG(fsp, "data received past end. len %zx offset %zx "
|
|
"data_len %x\n", len, offset, fsp->data_len);
|
|
|
|
/* Data is corrupted indicate scsi-ml should retry */
|
|
host_bcode = FC_DATA_OVRRUN;
|
|
goto err;
|
|
}
|
|
if (offset != fsp->xfer_len)
|
|
fsp->state |= FC_SRB_DISCONTIG;
|
|
|
|
sg = scsi_sglist(sc);
|
|
nents = scsi_sg_count(sc);
|
|
|
|
if (!(fr_flags(fp) & FCPHF_CRC_UNCHECKED)) {
|
|
copy_len = fc_copy_buffer_to_sglist(buf, len, sg, &nents,
|
|
&offset, NULL);
|
|
} else {
|
|
crc = crc32(~0, (u8 *) fh, sizeof(*fh));
|
|
copy_len = fc_copy_buffer_to_sglist(buf, len, sg, &nents,
|
|
&offset, &crc);
|
|
buf = fc_frame_payload_get(fp, 0);
|
|
if (len % 4)
|
|
crc = crc32(crc, buf + len, 4 - (len % 4));
|
|
|
|
if (~crc != le32_to_cpu(fr_crc(fp))) {
|
|
crc_err:
|
|
stats = per_cpu_ptr(lport->stats, get_cpu());
|
|
stats->ErrorFrames++;
|
|
/* per cpu count, not total count, but OK for limit */
|
|
if (stats->InvalidCRCCount++ < FC_MAX_ERROR_CNT)
|
|
printk(KERN_WARNING "libfc: CRC error on data "
|
|
"frame for port (%6.6x)\n",
|
|
lport->port_id);
|
|
put_cpu();
|
|
/*
|
|
* Assume the frame is total garbage.
|
|
* We may have copied it over the good part
|
|
* of the buffer.
|
|
* If so, we need to retry the entire operation.
|
|
* Otherwise, ignore it.
|
|
*/
|
|
if (fsp->state & FC_SRB_DISCONTIG) {
|
|
host_bcode = FC_CRC_ERROR;
|
|
goto err;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (fsp->xfer_contig_end == start_offset)
|
|
fsp->xfer_contig_end += copy_len;
|
|
fsp->xfer_len += copy_len;
|
|
|
|
/*
|
|
* In the very rare event that this data arrived after the response
|
|
* and completes the transfer, call the completion handler.
|
|
*/
|
|
if (unlikely(fsp->state & FC_SRB_RCV_STATUS) &&
|
|
fsp->xfer_len == fsp->data_len - fsp->scsi_resid) {
|
|
FC_FCP_DBG( fsp, "complete out-of-order sequence\n" );
|
|
fc_fcp_complete_locked(fsp);
|
|
}
|
|
return;
|
|
err:
|
|
fc_fcp_recovery(fsp, host_bcode);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_send_data() - Send SCSI data to a target
|
|
* @fsp: The FCP packet the data is on
|
|
* @sp: The sequence the data is to be sent on
|
|
* @offset: The starting offset for this data request
|
|
* @seq_blen: The burst length for this data request
|
|
*
|
|
* Called after receiving a Transfer Ready data descriptor.
|
|
* If the LLD is capable of sequence offload then send down the
|
|
* seq_blen amount of data in single frame, otherwise send
|
|
* multiple frames of the maximum frame payload supported by
|
|
* the target port.
|
|
*/
|
|
static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq,
|
|
size_t offset, size_t seq_blen)
|
|
{
|
|
struct fc_exch *ep;
|
|
struct scsi_cmnd *sc;
|
|
struct scatterlist *sg;
|
|
struct fc_frame *fp = NULL;
|
|
struct fc_lport *lport = fsp->lp;
|
|
struct page *page;
|
|
size_t remaining;
|
|
size_t t_blen;
|
|
size_t tlen;
|
|
size_t sg_bytes;
|
|
size_t frame_offset, fh_parm_offset;
|
|
size_t off;
|
|
int error;
|
|
void *data = NULL;
|
|
void *page_addr;
|
|
int using_sg = lport->sg_supp;
|
|
u32 f_ctl;
|
|
|
|
WARN_ON(seq_blen <= 0);
|
|
if (unlikely(offset + seq_blen > fsp->data_len)) {
|
|
/* this should never happen */
|
|
FC_FCP_DBG(fsp, "xfer-ready past end. seq_blen %zx "
|
|
"offset %zx\n", seq_blen, offset);
|
|
fc_fcp_send_abort(fsp);
|
|
return 0;
|
|
} else if (offset != fsp->xfer_len) {
|
|
/* Out of Order Data Request - no problem, but unexpected. */
|
|
FC_FCP_DBG(fsp, "xfer-ready non-contiguous. "
|
|
"seq_blen %zx offset %zx\n", seq_blen, offset);
|
|
}
|
|
|
|
/*
|
|
* if LLD is capable of seq_offload then set transport
|
|
* burst length (t_blen) to seq_blen, otherwise set t_blen
|
|
* to max FC frame payload previously set in fsp->max_payload.
|
|
*/
|
|
t_blen = fsp->max_payload;
|
|
if (lport->seq_offload) {
|
|
t_blen = min(seq_blen, (size_t)lport->lso_max);
|
|
FC_FCP_DBG(fsp, "fsp=%p:lso:blen=%zx lso_max=0x%x t_blen=%zx\n",
|
|
fsp, seq_blen, lport->lso_max, t_blen);
|
|
}
|
|
|
|
if (t_blen > 512)
|
|
t_blen &= ~(512 - 1); /* round down to block size */
|
|
sc = fsp->cmd;
|
|
|
|
remaining = seq_blen;
|
|
fh_parm_offset = frame_offset = offset;
|
|
tlen = 0;
|
|
seq = fc_seq_start_next(seq);
|
|
f_ctl = FC_FC_REL_OFF;
|
|
WARN_ON(!seq);
|
|
|
|
sg = scsi_sglist(sc);
|
|
|
|
while (remaining > 0 && sg) {
|
|
if (offset >= sg->length) {
|
|
offset -= sg->length;
|
|
sg = sg_next(sg);
|
|
continue;
|
|
}
|
|
if (!fp) {
|
|
tlen = min(t_blen, remaining);
|
|
|
|
/*
|
|
* TODO. Temporary workaround. fc_seq_send() can't
|
|
* handle odd lengths in non-linear skbs.
|
|
* This will be the final fragment only.
|
|
*/
|
|
if (tlen % 4)
|
|
using_sg = 0;
|
|
fp = fc_frame_alloc(lport, using_sg ? 0 : tlen);
|
|
if (!fp)
|
|
return -ENOMEM;
|
|
|
|
data = fc_frame_header_get(fp) + 1;
|
|
fh_parm_offset = frame_offset;
|
|
fr_max_payload(fp) = fsp->max_payload;
|
|
}
|
|
|
|
off = offset + sg->offset;
|
|
sg_bytes = min(tlen, sg->length - offset);
|
|
sg_bytes = min(sg_bytes,
|
|
(size_t) (PAGE_SIZE - (off & ~PAGE_MASK)));
|
|
page = sg_page(sg) + (off >> PAGE_SHIFT);
|
|
if (using_sg) {
|
|
get_page(page);
|
|
skb_fill_page_desc(fp_skb(fp),
|
|
skb_shinfo(fp_skb(fp))->nr_frags,
|
|
page, off & ~PAGE_MASK, sg_bytes);
|
|
fp_skb(fp)->data_len += sg_bytes;
|
|
fr_len(fp) += sg_bytes;
|
|
fp_skb(fp)->truesize += PAGE_SIZE;
|
|
} else {
|
|
/*
|
|
* The scatterlist item may be bigger than PAGE_SIZE,
|
|
* but we must not cross pages inside the kmap.
|
|
*/
|
|
page_addr = kmap_atomic(page);
|
|
memcpy(data, (char *)page_addr + (off & ~PAGE_MASK),
|
|
sg_bytes);
|
|
kunmap_atomic(page_addr);
|
|
data += sg_bytes;
|
|
}
|
|
offset += sg_bytes;
|
|
frame_offset += sg_bytes;
|
|
tlen -= sg_bytes;
|
|
remaining -= sg_bytes;
|
|
|
|
if ((skb_shinfo(fp_skb(fp))->nr_frags < FC_FRAME_SG_LEN) &&
|
|
(tlen))
|
|
continue;
|
|
|
|
/*
|
|
* Send sequence with transfer sequence initiative in case
|
|
* this is last FCP frame of the sequence.
|
|
*/
|
|
if (remaining == 0)
|
|
f_ctl |= FC_FC_SEQ_INIT | FC_FC_END_SEQ;
|
|
|
|
ep = fc_seq_exch(seq);
|
|
fc_fill_fc_hdr(fp, FC_RCTL_DD_SOL_DATA, ep->did, ep->sid,
|
|
FC_TYPE_FCP, f_ctl, fh_parm_offset);
|
|
|
|
/*
|
|
* send fragment using for a sequence.
|
|
*/
|
|
error = fc_seq_send(lport, seq, fp);
|
|
if (error) {
|
|
WARN_ON(1); /* send error should be rare */
|
|
return error;
|
|
}
|
|
fp = NULL;
|
|
}
|
|
fsp->xfer_len += seq_blen; /* premature count? */
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_abts_resp() - Receive an ABTS response
|
|
* @fsp: The FCP packet that is being aborted
|
|
* @fp: The response frame
|
|
*/
|
|
static void fc_fcp_abts_resp(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
|
|
{
|
|
int ba_done = 1;
|
|
struct fc_ba_rjt *brp;
|
|
struct fc_frame_header *fh;
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
switch (fh->fh_r_ctl) {
|
|
case FC_RCTL_BA_ACC:
|
|
break;
|
|
case FC_RCTL_BA_RJT:
|
|
brp = fc_frame_payload_get(fp, sizeof(*brp));
|
|
if (brp && brp->br_reason == FC_BA_RJT_LOG_ERR)
|
|
break;
|
|
/* fall thru */
|
|
default:
|
|
/*
|
|
* we will let the command timeout
|
|
* and scsi-ml recover in this case,
|
|
* therefore cleared the ba_done flag.
|
|
*/
|
|
ba_done = 0;
|
|
}
|
|
|
|
if (ba_done)
|
|
fc_fcp_abort_done(fsp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_recv() - Receive an FCP frame
|
|
* @seq: The sequence the frame is on
|
|
* @fp: The received frame
|
|
* @arg: The related FCP packet
|
|
*
|
|
* Context: Called from Soft IRQ context. Can not be called
|
|
* holding the FCP packet list lock.
|
|
*/
|
|
static void fc_fcp_recv(struct fc_seq *seq, struct fc_frame *fp, void *arg)
|
|
{
|
|
struct fc_fcp_pkt *fsp = (struct fc_fcp_pkt *)arg;
|
|
struct fc_lport *lport = fsp->lp;
|
|
struct fc_frame_header *fh;
|
|
struct fcp_txrdy *dd;
|
|
u8 r_ctl;
|
|
int rc = 0;
|
|
|
|
if (IS_ERR(fp)) {
|
|
fc_fcp_error(fsp, fp);
|
|
return;
|
|
}
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
r_ctl = fh->fh_r_ctl;
|
|
|
|
if (lport->state != LPORT_ST_READY) {
|
|
FC_FCP_DBG(fsp, "lport state %d, ignoring r_ctl %x\n",
|
|
lport->state, r_ctl);
|
|
goto out;
|
|
}
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
goto out;
|
|
|
|
if (fh->fh_type == FC_TYPE_BLS) {
|
|
fc_fcp_abts_resp(fsp, fp);
|
|
goto unlock;
|
|
}
|
|
|
|
if (fsp->state & (FC_SRB_ABORTED | FC_SRB_ABORT_PENDING)) {
|
|
FC_FCP_DBG(fsp, "command aborted, ignoring r_ctl %x\n", r_ctl);
|
|
goto unlock;
|
|
}
|
|
|
|
if (r_ctl == FC_RCTL_DD_DATA_DESC) {
|
|
/*
|
|
* received XFER RDY from the target
|
|
* need to send data to the target
|
|
*/
|
|
WARN_ON(fr_flags(fp) & FCPHF_CRC_UNCHECKED);
|
|
dd = fc_frame_payload_get(fp, sizeof(*dd));
|
|
WARN_ON(!dd);
|
|
|
|
rc = fc_fcp_send_data(fsp, seq,
|
|
(size_t) ntohl(dd->ft_data_ro),
|
|
(size_t) ntohl(dd->ft_burst_len));
|
|
if (!rc)
|
|
seq->rec_data = fsp->xfer_len;
|
|
} else if (r_ctl == FC_RCTL_DD_SOL_DATA) {
|
|
/*
|
|
* received a DATA frame
|
|
* next we will copy the data to the system buffer
|
|
*/
|
|
WARN_ON(fr_len(fp) < sizeof(*fh)); /* len may be 0 */
|
|
fc_fcp_recv_data(fsp, fp);
|
|
seq->rec_data = fsp->xfer_contig_end;
|
|
} else if (r_ctl == FC_RCTL_DD_CMD_STATUS) {
|
|
WARN_ON(fr_flags(fp) & FCPHF_CRC_UNCHECKED);
|
|
|
|
fc_fcp_resp(fsp, fp);
|
|
} else {
|
|
FC_FCP_DBG(fsp, "unexpected frame. r_ctl %x\n", r_ctl);
|
|
}
|
|
unlock:
|
|
fc_fcp_unlock_pkt(fsp);
|
|
out:
|
|
fc_frame_free(fp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_resp() - Handler for FCP responses
|
|
* @fsp: The FCP packet the response is for
|
|
* @fp: The response frame
|
|
*/
|
|
static void fc_fcp_resp(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
|
|
{
|
|
struct fc_frame_header *fh;
|
|
struct fcp_resp *fc_rp;
|
|
struct fcp_resp_ext *rp_ex;
|
|
struct fcp_resp_rsp_info *fc_rp_info;
|
|
u32 plen;
|
|
u32 expected_len;
|
|
u32 respl = 0;
|
|
u32 snsl = 0;
|
|
u8 flags = 0;
|
|
|
|
plen = fr_len(fp);
|
|
fh = (struct fc_frame_header *)fr_hdr(fp);
|
|
if (unlikely(plen < sizeof(*fh) + sizeof(*fc_rp)))
|
|
goto len_err;
|
|
plen -= sizeof(*fh);
|
|
fc_rp = (struct fcp_resp *)(fh + 1);
|
|
fsp->cdb_status = fc_rp->fr_status;
|
|
flags = fc_rp->fr_flags;
|
|
fsp->scsi_comp_flags = flags;
|
|
expected_len = fsp->data_len;
|
|
|
|
/* if ddp, update xfer len */
|
|
fc_fcp_ddp_done(fsp);
|
|
|
|
if (unlikely((flags & ~FCP_CONF_REQ) || fc_rp->fr_status)) {
|
|
rp_ex = (void *)(fc_rp + 1);
|
|
if (flags & (FCP_RSP_LEN_VAL | FCP_SNS_LEN_VAL)) {
|
|
if (plen < sizeof(*fc_rp) + sizeof(*rp_ex))
|
|
goto len_err;
|
|
fc_rp_info = (struct fcp_resp_rsp_info *)(rp_ex + 1);
|
|
if (flags & FCP_RSP_LEN_VAL) {
|
|
respl = ntohl(rp_ex->fr_rsp_len);
|
|
if ((respl != FCP_RESP_RSP_INFO_LEN4) &&
|
|
(respl != FCP_RESP_RSP_INFO_LEN8))
|
|
goto len_err;
|
|
if (fsp->wait_for_comp) {
|
|
/* Abuse cdb_status for rsp code */
|
|
fsp->cdb_status = fc_rp_info->rsp_code;
|
|
complete(&fsp->tm_done);
|
|
/*
|
|
* tmfs will not have any scsi cmd so
|
|
* exit here
|
|
*/
|
|
return;
|
|
}
|
|
}
|
|
if (flags & FCP_SNS_LEN_VAL) {
|
|
snsl = ntohl(rp_ex->fr_sns_len);
|
|
if (snsl > SCSI_SENSE_BUFFERSIZE)
|
|
snsl = SCSI_SENSE_BUFFERSIZE;
|
|
memcpy(fsp->cmd->sense_buffer,
|
|
(char *)fc_rp_info + respl, snsl);
|
|
}
|
|
}
|
|
if (flags & (FCP_RESID_UNDER | FCP_RESID_OVER)) {
|
|
if (plen < sizeof(*fc_rp) + sizeof(rp_ex->fr_resid))
|
|
goto len_err;
|
|
if (flags & FCP_RESID_UNDER) {
|
|
fsp->scsi_resid = ntohl(rp_ex->fr_resid);
|
|
/*
|
|
* The cmnd->underflow is the minimum number of
|
|
* bytes that must be transferred for this
|
|
* command. Provided a sense condition is not
|
|
* present, make sure the actual amount
|
|
* transferred is at least the underflow value
|
|
* or fail.
|
|
*/
|
|
if (!(flags & FCP_SNS_LEN_VAL) &&
|
|
(fc_rp->fr_status == 0) &&
|
|
(scsi_bufflen(fsp->cmd) -
|
|
fsp->scsi_resid) < fsp->cmd->underflow)
|
|
goto err;
|
|
expected_len -= fsp->scsi_resid;
|
|
} else {
|
|
fsp->status_code = FC_ERROR;
|
|
}
|
|
}
|
|
}
|
|
fsp->state |= FC_SRB_RCV_STATUS;
|
|
|
|
/*
|
|
* Check for missing or extra data frames.
|
|
*/
|
|
if (unlikely(fsp->cdb_status == SAM_STAT_GOOD &&
|
|
fsp->xfer_len != expected_len)) {
|
|
if (fsp->xfer_len < expected_len) {
|
|
/*
|
|
* Some data may be queued locally,
|
|
* Wait a at least one jiffy to see if it is delivered.
|
|
* If this expires without data, we may do SRR.
|
|
*/
|
|
if (fsp->lp->qfull) {
|
|
FC_FCP_DBG(fsp, "tgt %6.6x queue busy retry\n",
|
|
fsp->rport->port_id);
|
|
return;
|
|
}
|
|
FC_FCP_DBG(fsp, "tgt %6.6x xfer len %zx data underrun "
|
|
"len %x, data len %x\n",
|
|
fsp->rport->port_id,
|
|
fsp->xfer_len, expected_len, fsp->data_len);
|
|
fc_fcp_timer_set(fsp, get_fsp_rec_tov(fsp));
|
|
return;
|
|
}
|
|
fsp->status_code = FC_DATA_OVRRUN;
|
|
FC_FCP_DBG(fsp, "tgt %6.6x xfer len %zx greater than expected, "
|
|
"len %x, data len %x\n",
|
|
fsp->rport->port_id,
|
|
fsp->xfer_len, expected_len, fsp->data_len);
|
|
}
|
|
fc_fcp_complete_locked(fsp);
|
|
return;
|
|
|
|
len_err:
|
|
FC_FCP_DBG(fsp, "short FCP response. flags 0x%x len %u respl %u "
|
|
"snsl %u\n", flags, fr_len(fp), respl, snsl);
|
|
err:
|
|
fsp->status_code = FC_ERROR;
|
|
fc_fcp_complete_locked(fsp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_complete_locked() - Complete processing of a fcp_pkt with the
|
|
* fcp_pkt lock held
|
|
* @fsp: The FCP packet to be completed
|
|
*
|
|
* This function may sleep if a timer is pending. The packet lock must be
|
|
* held, and the host lock must not be held.
|
|
*/
|
|
static void fc_fcp_complete_locked(struct fc_fcp_pkt *fsp)
|
|
{
|
|
struct fc_lport *lport = fsp->lp;
|
|
struct fc_seq *seq;
|
|
struct fc_exch *ep;
|
|
u32 f_ctl;
|
|
|
|
if (fsp->state & FC_SRB_ABORT_PENDING)
|
|
return;
|
|
|
|
if (fsp->state & FC_SRB_ABORTED) {
|
|
if (!fsp->status_code)
|
|
fsp->status_code = FC_CMD_ABORTED;
|
|
} else {
|
|
/*
|
|
* Test for transport underrun, independent of response
|
|
* underrun status.
|
|
*/
|
|
if (fsp->cdb_status == SAM_STAT_GOOD &&
|
|
fsp->xfer_len < fsp->data_len && !fsp->io_status &&
|
|
(!(fsp->scsi_comp_flags & FCP_RESID_UNDER) ||
|
|
fsp->xfer_len < fsp->data_len - fsp->scsi_resid)) {
|
|
FC_FCP_DBG(fsp, "data underrun, xfer %zx data %x\n",
|
|
fsp->xfer_len, fsp->data_len);
|
|
fsp->status_code = FC_DATA_UNDRUN;
|
|
}
|
|
}
|
|
|
|
seq = fsp->seq_ptr;
|
|
if (seq) {
|
|
fsp->seq_ptr = NULL;
|
|
if (unlikely(fsp->scsi_comp_flags & FCP_CONF_REQ)) {
|
|
struct fc_frame *conf_frame;
|
|
struct fc_seq *csp;
|
|
|
|
csp = fc_seq_start_next(seq);
|
|
conf_frame = fc_fcp_frame_alloc(fsp->lp, 0);
|
|
if (conf_frame) {
|
|
f_ctl = FC_FC_SEQ_INIT;
|
|
f_ctl |= FC_FC_LAST_SEQ | FC_FC_END_SEQ;
|
|
ep = fc_seq_exch(seq);
|
|
fc_fill_fc_hdr(conf_frame, FC_RCTL_DD_SOL_CTL,
|
|
ep->did, ep->sid,
|
|
FC_TYPE_FCP, f_ctl, 0);
|
|
fc_seq_send(lport, csp, conf_frame);
|
|
}
|
|
}
|
|
fc_exch_done(seq);
|
|
}
|
|
/*
|
|
* Some resets driven by SCSI are not I/Os and do not have
|
|
* SCSI commands associated with the requests. We should not
|
|
* call I/O completion if we do not have a SCSI command.
|
|
*/
|
|
if (fsp->cmd)
|
|
fc_io_compl(fsp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_cleanup_cmd() - Cancel the active exchange on a fcp_pkt
|
|
* @fsp: The FCP packet whose exchanges should be canceled
|
|
* @error: The reason for the cancellation
|
|
*/
|
|
static void fc_fcp_cleanup_cmd(struct fc_fcp_pkt *fsp, int error)
|
|
{
|
|
if (fsp->seq_ptr) {
|
|
fc_exch_done(fsp->seq_ptr);
|
|
fsp->seq_ptr = NULL;
|
|
}
|
|
fsp->status_code = error;
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_cleanup_each_cmd() - Cancel all exchanges on a local port
|
|
* @lport: The local port whose exchanges should be canceled
|
|
* @id: The target's ID
|
|
* @lun: The LUN
|
|
* @error: The reason for cancellation
|
|
*
|
|
* If lun or id is -1, they are ignored.
|
|
*/
|
|
static void fc_fcp_cleanup_each_cmd(struct fc_lport *lport, unsigned int id,
|
|
unsigned int lun, int error)
|
|
{
|
|
struct fc_fcp_internal *si = fc_get_scsi_internal(lport);
|
|
struct fc_fcp_pkt *fsp;
|
|
struct scsi_cmnd *sc_cmd;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&si->scsi_queue_lock, flags);
|
|
restart:
|
|
list_for_each_entry(fsp, &si->scsi_pkt_queue, list) {
|
|
sc_cmd = fsp->cmd;
|
|
if (id != -1 && scmd_id(sc_cmd) != id)
|
|
continue;
|
|
|
|
if (lun != -1 && sc_cmd->device->lun != lun)
|
|
continue;
|
|
|
|
fc_fcp_pkt_hold(fsp);
|
|
spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
|
|
|
|
spin_lock_bh(&fsp->scsi_pkt_lock);
|
|
if (!(fsp->state & FC_SRB_COMPL)) {
|
|
fsp->state |= FC_SRB_COMPL;
|
|
/*
|
|
* TODO: dropping scsi_pkt_lock and then reacquiring
|
|
* again around fc_fcp_cleanup_cmd() is required,
|
|
* since fc_fcp_cleanup_cmd() calls into
|
|
* fc_seq_set_resp() and that func preempts cpu using
|
|
* schedule. May be schedule and related code should be
|
|
* removed instead of unlocking here to avoid scheduling
|
|
* while atomic bug.
|
|
*/
|
|
spin_unlock_bh(&fsp->scsi_pkt_lock);
|
|
|
|
fc_fcp_cleanup_cmd(fsp, error);
|
|
|
|
spin_lock_bh(&fsp->scsi_pkt_lock);
|
|
fc_io_compl(fsp);
|
|
}
|
|
spin_unlock_bh(&fsp->scsi_pkt_lock);
|
|
|
|
fc_fcp_pkt_release(fsp);
|
|
spin_lock_irqsave(&si->scsi_queue_lock, flags);
|
|
/*
|
|
* while we dropped the lock multiple pkts could
|
|
* have been released, so we have to start over.
|
|
*/
|
|
goto restart;
|
|
}
|
|
spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_abort_io() - Abort all FCP-SCSI exchanges on a local port
|
|
* @lport: The local port whose exchanges are to be aborted
|
|
*/
|
|
static void fc_fcp_abort_io(struct fc_lport *lport)
|
|
{
|
|
fc_fcp_cleanup_each_cmd(lport, -1, -1, FC_HRD_ERROR);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_pkt_send() - Send a fcp_pkt
|
|
* @lport: The local port to send the FCP packet on
|
|
* @fsp: The FCP packet to send
|
|
*
|
|
* Return: Zero for success and -1 for failure
|
|
* Locks: Called without locks held
|
|
*/
|
|
static int fc_fcp_pkt_send(struct fc_lport *lport, struct fc_fcp_pkt *fsp)
|
|
{
|
|
struct fc_fcp_internal *si = fc_get_scsi_internal(lport);
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
fsp->cmd->SCp.ptr = (char *)fsp;
|
|
fsp->cdb_cmd.fc_dl = htonl(fsp->data_len);
|
|
fsp->cdb_cmd.fc_flags = fsp->req_flags & ~FCP_CFL_LEN_MASK;
|
|
|
|
int_to_scsilun(fsp->cmd->device->lun, &fsp->cdb_cmd.fc_lun);
|
|
memcpy(fsp->cdb_cmd.fc_cdb, fsp->cmd->cmnd, fsp->cmd->cmd_len);
|
|
|
|
spin_lock_irqsave(&si->scsi_queue_lock, flags);
|
|
list_add_tail(&fsp->list, &si->scsi_pkt_queue);
|
|
spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
|
|
rc = lport->tt.fcp_cmd_send(lport, fsp, fc_fcp_recv);
|
|
if (unlikely(rc)) {
|
|
spin_lock_irqsave(&si->scsi_queue_lock, flags);
|
|
fsp->cmd->SCp.ptr = NULL;
|
|
list_del(&fsp->list);
|
|
spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_cmd_send() - Send a FCP command
|
|
* @lport: The local port to send the command on
|
|
* @fsp: The FCP packet the command is on
|
|
* @resp: The handler for the response
|
|
*/
|
|
static int fc_fcp_cmd_send(struct fc_lport *lport, struct fc_fcp_pkt *fsp,
|
|
void (*resp)(struct fc_seq *,
|
|
struct fc_frame *fp,
|
|
void *arg))
|
|
{
|
|
struct fc_frame *fp;
|
|
struct fc_seq *seq;
|
|
struct fc_rport *rport;
|
|
struct fc_rport_libfc_priv *rpriv;
|
|
const size_t len = sizeof(fsp->cdb_cmd);
|
|
int rc = 0;
|
|
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
return 0;
|
|
|
|
fp = fc_fcp_frame_alloc(lport, sizeof(fsp->cdb_cmd));
|
|
if (!fp) {
|
|
rc = -1;
|
|
goto unlock;
|
|
}
|
|
|
|
memcpy(fc_frame_payload_get(fp, len), &fsp->cdb_cmd, len);
|
|
fr_fsp(fp) = fsp;
|
|
rport = fsp->rport;
|
|
fsp->max_payload = rport->maxframe_size;
|
|
rpriv = rport->dd_data;
|
|
|
|
fc_fill_fc_hdr(fp, FC_RCTL_DD_UNSOL_CMD, rport->port_id,
|
|
rpriv->local_port->port_id, FC_TYPE_FCP,
|
|
FC_FCTL_REQ, 0);
|
|
|
|
seq = fc_exch_seq_send(lport, fp, resp, fc_fcp_pkt_destroy, fsp, 0);
|
|
if (!seq) {
|
|
rc = -1;
|
|
goto unlock;
|
|
}
|
|
fsp->seq_ptr = seq;
|
|
fc_fcp_pkt_hold(fsp); /* hold for fc_fcp_pkt_destroy */
|
|
|
|
fsp->timer.function = fc_fcp_timeout;
|
|
if (rpriv->flags & FC_RP_FLAGS_REC_SUPPORTED)
|
|
fc_fcp_timer_set(fsp, get_fsp_rec_tov(fsp));
|
|
|
|
unlock:
|
|
fc_fcp_unlock_pkt(fsp);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_error() - Handler for FCP layer errors
|
|
* @fsp: The FCP packet the error is on
|
|
* @fp: The frame that has errored
|
|
*/
|
|
static void fc_fcp_error(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
|
|
{
|
|
int error = PTR_ERR(fp);
|
|
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
return;
|
|
|
|
if (error == -FC_EX_CLOSED) {
|
|
fc_fcp_retry_cmd(fsp, FC_ERROR);
|
|
goto unlock;
|
|
}
|
|
|
|
/*
|
|
* clear abort pending, because the lower layer
|
|
* decided to force completion.
|
|
*/
|
|
fsp->state &= ~FC_SRB_ABORT_PENDING;
|
|
fsp->status_code = FC_CMD_PLOGO;
|
|
fc_fcp_complete_locked(fsp);
|
|
unlock:
|
|
fc_fcp_unlock_pkt(fsp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_pkt_abort() - Abort a fcp_pkt
|
|
* @fsp: The FCP packet to abort on
|
|
*
|
|
* Called to send an abort and then wait for abort completion
|
|
*/
|
|
static int fc_fcp_pkt_abort(struct fc_fcp_pkt *fsp)
|
|
{
|
|
int rc = FAILED;
|
|
unsigned long ticks_left;
|
|
|
|
FC_FCP_DBG(fsp, "pkt abort state %x\n", fsp->state);
|
|
if (fc_fcp_send_abort(fsp)) {
|
|
FC_FCP_DBG(fsp, "failed to send abort\n");
|
|
return FAILED;
|
|
}
|
|
|
|
if (fsp->state & FC_SRB_ABORTED) {
|
|
FC_FCP_DBG(fsp, "target abort cmd completed\n");
|
|
return SUCCESS;
|
|
}
|
|
|
|
init_completion(&fsp->tm_done);
|
|
fsp->wait_for_comp = 1;
|
|
|
|
spin_unlock_bh(&fsp->scsi_pkt_lock);
|
|
ticks_left = wait_for_completion_timeout(&fsp->tm_done,
|
|
FC_SCSI_TM_TOV);
|
|
spin_lock_bh(&fsp->scsi_pkt_lock);
|
|
fsp->wait_for_comp = 0;
|
|
|
|
if (!ticks_left) {
|
|
FC_FCP_DBG(fsp, "target abort cmd failed\n");
|
|
} else if (fsp->state & FC_SRB_ABORTED) {
|
|
FC_FCP_DBG(fsp, "target abort cmd passed\n");
|
|
rc = SUCCESS;
|
|
fc_fcp_complete_locked(fsp);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* fc_lun_reset_send() - Send LUN reset command
|
|
* @data: The FCP packet that identifies the LUN to be reset
|
|
*/
|
|
static void fc_lun_reset_send(struct timer_list *t)
|
|
{
|
|
struct fc_fcp_pkt *fsp = from_timer(fsp, t, timer);
|
|
struct fc_lport *lport = fsp->lp;
|
|
|
|
if (lport->tt.fcp_cmd_send(lport, fsp, fc_tm_done)) {
|
|
if (fsp->recov_retry++ >= FC_MAX_RECOV_RETRY)
|
|
return;
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
return;
|
|
fsp->timer.function = fc_lun_reset_send;
|
|
fc_fcp_timer_set(fsp, get_fsp_rec_tov(fsp));
|
|
fc_fcp_unlock_pkt(fsp);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* fc_lun_reset() - Send a LUN RESET command to a device
|
|
* and wait for the reply
|
|
* @lport: The local port to sent the command on
|
|
* @fsp: The FCP packet that identifies the LUN to be reset
|
|
* @id: The SCSI command ID
|
|
* @lun: The LUN ID to be reset
|
|
*/
|
|
static int fc_lun_reset(struct fc_lport *lport, struct fc_fcp_pkt *fsp,
|
|
unsigned int id, unsigned int lun)
|
|
{
|
|
int rc;
|
|
|
|
fsp->cdb_cmd.fc_dl = htonl(fsp->data_len);
|
|
fsp->cdb_cmd.fc_tm_flags = FCP_TMF_LUN_RESET;
|
|
int_to_scsilun(lun, &fsp->cdb_cmd.fc_lun);
|
|
|
|
fsp->wait_for_comp = 1;
|
|
init_completion(&fsp->tm_done);
|
|
|
|
fc_lun_reset_send(&fsp->timer);
|
|
|
|
/*
|
|
* wait for completion of reset
|
|
* after that make sure all commands are terminated
|
|
*/
|
|
rc = wait_for_completion_timeout(&fsp->tm_done, FC_SCSI_TM_TOV);
|
|
|
|
spin_lock_bh(&fsp->scsi_pkt_lock);
|
|
fsp->state |= FC_SRB_COMPL;
|
|
spin_unlock_bh(&fsp->scsi_pkt_lock);
|
|
|
|
del_timer_sync(&fsp->timer);
|
|
|
|
spin_lock_bh(&fsp->scsi_pkt_lock);
|
|
if (fsp->seq_ptr) {
|
|
fc_exch_done(fsp->seq_ptr);
|
|
fsp->seq_ptr = NULL;
|
|
}
|
|
fsp->wait_for_comp = 0;
|
|
spin_unlock_bh(&fsp->scsi_pkt_lock);
|
|
|
|
if (!rc) {
|
|
FC_SCSI_DBG(lport, "lun reset failed\n");
|
|
return FAILED;
|
|
}
|
|
|
|
/* cdb_status holds the tmf's rsp code */
|
|
if (fsp->cdb_status != FCP_TMF_CMPL)
|
|
return FAILED;
|
|
|
|
FC_SCSI_DBG(lport, "lun reset to lun %u completed\n", lun);
|
|
fc_fcp_cleanup_each_cmd(lport, id, lun, FC_CMD_ABORTED);
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* fc_tm_done() - Task Management response handler
|
|
* @seq: The sequence that the response is on
|
|
* @fp: The response frame
|
|
* @arg: The FCP packet the response is for
|
|
*/
|
|
static void fc_tm_done(struct fc_seq *seq, struct fc_frame *fp, void *arg)
|
|
{
|
|
struct fc_fcp_pkt *fsp = arg;
|
|
struct fc_frame_header *fh;
|
|
|
|
if (IS_ERR(fp)) {
|
|
/*
|
|
* If there is an error just let it timeout or wait
|
|
* for TMF to be aborted if it timedout.
|
|
*
|
|
* scsi-eh will escalate for when either happens.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
goto out;
|
|
|
|
/*
|
|
* raced with eh timeout handler.
|
|
*/
|
|
if (!fsp->seq_ptr || !fsp->wait_for_comp)
|
|
goto out_unlock;
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
if (fh->fh_type != FC_TYPE_BLS)
|
|
fc_fcp_resp(fsp, fp);
|
|
fsp->seq_ptr = NULL;
|
|
fc_exch_done(seq);
|
|
out_unlock:
|
|
fc_fcp_unlock_pkt(fsp);
|
|
out:
|
|
fc_frame_free(fp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_cleanup() - Cleanup all FCP exchanges on a local port
|
|
* @lport: The local port to be cleaned up
|
|
*/
|
|
static void fc_fcp_cleanup(struct fc_lport *lport)
|
|
{
|
|
fc_fcp_cleanup_each_cmd(lport, -1, -1, FC_ERROR);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_timeout() - Handler for fcp_pkt timeouts
|
|
* @data: The FCP packet that has timed out
|
|
*
|
|
* If REC is supported then just issue it and return. The REC exchange will
|
|
* complete or time out and recovery can continue at that point. Otherwise,
|
|
* if the response has been received without all the data it has been
|
|
* ER_TIMEOUT since the response was received. If the response has not been
|
|
* received we see if data was received recently. If it has been then we
|
|
* continue waiting, otherwise, we abort the command.
|
|
*/
|
|
static void fc_fcp_timeout(struct timer_list *t)
|
|
{
|
|
struct fc_fcp_pkt *fsp = from_timer(fsp, t, timer);
|
|
struct fc_rport *rport = fsp->rport;
|
|
struct fc_rport_libfc_priv *rpriv = rport->dd_data;
|
|
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
return;
|
|
|
|
if (fsp->cdb_cmd.fc_tm_flags)
|
|
goto unlock;
|
|
|
|
if (fsp->lp->qfull) {
|
|
FC_FCP_DBG(fsp, "fcp timeout, resetting timer delay %d\n",
|
|
fsp->timer_delay);
|
|
fsp->timer.function = fc_fcp_timeout;
|
|
fc_fcp_timer_set(fsp, fsp->timer_delay);
|
|
goto unlock;
|
|
}
|
|
FC_FCP_DBG(fsp, "fcp timeout, delay %d flags %x state %x\n",
|
|
fsp->timer_delay, rpriv->flags, fsp->state);
|
|
fsp->state |= FC_SRB_FCP_PROCESSING_TMO;
|
|
|
|
if (rpriv->flags & FC_RP_FLAGS_REC_SUPPORTED)
|
|
fc_fcp_rec(fsp);
|
|
else if (fsp->state & FC_SRB_RCV_STATUS)
|
|
fc_fcp_complete_locked(fsp);
|
|
else
|
|
fc_fcp_recovery(fsp, FC_TIMED_OUT);
|
|
fsp->state &= ~FC_SRB_FCP_PROCESSING_TMO;
|
|
unlock:
|
|
fc_fcp_unlock_pkt(fsp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_rec() - Send a REC ELS request
|
|
* @fsp: The FCP packet to send the REC request on
|
|
*/
|
|
static void fc_fcp_rec(struct fc_fcp_pkt *fsp)
|
|
{
|
|
struct fc_lport *lport;
|
|
struct fc_frame *fp;
|
|
struct fc_rport *rport;
|
|
struct fc_rport_libfc_priv *rpriv;
|
|
|
|
lport = fsp->lp;
|
|
rport = fsp->rport;
|
|
rpriv = rport->dd_data;
|
|
if (!fsp->seq_ptr || rpriv->rp_state != RPORT_ST_READY) {
|
|
fsp->status_code = FC_HRD_ERROR;
|
|
fsp->io_status = 0;
|
|
fc_fcp_complete_locked(fsp);
|
|
return;
|
|
}
|
|
|
|
fp = fc_fcp_frame_alloc(lport, sizeof(struct fc_els_rec));
|
|
if (!fp)
|
|
goto retry;
|
|
|
|
fr_seq(fp) = fsp->seq_ptr;
|
|
fc_fill_fc_hdr(fp, FC_RCTL_ELS_REQ, rport->port_id,
|
|
rpriv->local_port->port_id, FC_TYPE_ELS,
|
|
FC_FCTL_REQ, 0);
|
|
if (lport->tt.elsct_send(lport, rport->port_id, fp, ELS_REC,
|
|
fc_fcp_rec_resp, fsp,
|
|
2 * lport->r_a_tov)) {
|
|
fc_fcp_pkt_hold(fsp); /* hold while REC outstanding */
|
|
return;
|
|
}
|
|
retry:
|
|
if (fsp->recov_retry++ < FC_MAX_RECOV_RETRY)
|
|
fc_fcp_timer_set(fsp, get_fsp_rec_tov(fsp));
|
|
else
|
|
fc_fcp_recovery(fsp, FC_TIMED_OUT);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_rec_resp() - Handler for REC ELS responses
|
|
* @seq: The sequence the response is on
|
|
* @fp: The response frame
|
|
* @arg: The FCP packet the response is on
|
|
*
|
|
* If the response is a reject then the scsi layer will handle
|
|
* the timeout. If the response is a LS_ACC then if the I/O was not completed
|
|
* set the timeout and return. If the I/O was completed then complete the
|
|
* exchange and tell the SCSI layer.
|
|
*/
|
|
static void fc_fcp_rec_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg)
|
|
{
|
|
struct fc_fcp_pkt *fsp = (struct fc_fcp_pkt *)arg;
|
|
struct fc_els_rec_acc *recp;
|
|
struct fc_els_ls_rjt *rjt;
|
|
u32 e_stat;
|
|
u8 opcode;
|
|
u32 offset;
|
|
enum dma_data_direction data_dir;
|
|
enum fc_rctl r_ctl;
|
|
struct fc_rport_libfc_priv *rpriv;
|
|
|
|
if (IS_ERR(fp)) {
|
|
fc_fcp_rec_error(fsp, fp);
|
|
return;
|
|
}
|
|
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
goto out;
|
|
|
|
fsp->recov_retry = 0;
|
|
opcode = fc_frame_payload_op(fp);
|
|
if (opcode == ELS_LS_RJT) {
|
|
rjt = fc_frame_payload_get(fp, sizeof(*rjt));
|
|
switch (rjt->er_reason) {
|
|
default:
|
|
FC_FCP_DBG(fsp,
|
|
"device %x invalid REC reject %d/%d\n",
|
|
fsp->rport->port_id, rjt->er_reason,
|
|
rjt->er_explan);
|
|
/* fall through */
|
|
case ELS_RJT_UNSUP:
|
|
FC_FCP_DBG(fsp, "device does not support REC\n");
|
|
rpriv = fsp->rport->dd_data;
|
|
/*
|
|
* if we do not spport RECs or got some bogus
|
|
* reason then resetup timer so we check for
|
|
* making progress.
|
|
*/
|
|
rpriv->flags &= ~FC_RP_FLAGS_REC_SUPPORTED;
|
|
break;
|
|
case ELS_RJT_LOGIC:
|
|
case ELS_RJT_UNAB:
|
|
FC_FCP_DBG(fsp, "device %x REC reject %d/%d\n",
|
|
fsp->rport->port_id, rjt->er_reason,
|
|
rjt->er_explan);
|
|
/*
|
|
* If response got lost or is stuck in the
|
|
* queue somewhere we have no idea if and when
|
|
* the response will be received. So quarantine
|
|
* the xid and retry the command.
|
|
*/
|
|
if (rjt->er_explan == ELS_EXPL_OXID_RXID) {
|
|
struct fc_exch *ep = fc_seq_exch(fsp->seq_ptr);
|
|
ep->state |= FC_EX_QUARANTINE;
|
|
fsp->state |= FC_SRB_ABORTED;
|
|
fc_fcp_retry_cmd(fsp, FC_TRANS_RESET);
|
|
break;
|
|
}
|
|
fc_fcp_recovery(fsp, FC_TRANS_RESET);
|
|
break;
|
|
}
|
|
} else if (opcode == ELS_LS_ACC) {
|
|
if (fsp->state & FC_SRB_ABORTED)
|
|
goto unlock_out;
|
|
|
|
data_dir = fsp->cmd->sc_data_direction;
|
|
recp = fc_frame_payload_get(fp, sizeof(*recp));
|
|
offset = ntohl(recp->reca_fc4value);
|
|
e_stat = ntohl(recp->reca_e_stat);
|
|
|
|
if (e_stat & ESB_ST_COMPLETE) {
|
|
|
|
/*
|
|
* The exchange is complete.
|
|
*
|
|
* For output, we must've lost the response.
|
|
* For input, all data must've been sent.
|
|
* We lost may have lost the response
|
|
* (and a confirmation was requested) and maybe
|
|
* some data.
|
|
*
|
|
* If all data received, send SRR
|
|
* asking for response. If partial data received,
|
|
* or gaps, SRR requests data at start of gap.
|
|
* Recovery via SRR relies on in-order-delivery.
|
|
*/
|
|
if (data_dir == DMA_TO_DEVICE) {
|
|
r_ctl = FC_RCTL_DD_CMD_STATUS;
|
|
} else if (fsp->xfer_contig_end == offset) {
|
|
r_ctl = FC_RCTL_DD_CMD_STATUS;
|
|
} else {
|
|
offset = fsp->xfer_contig_end;
|
|
r_ctl = FC_RCTL_DD_SOL_DATA;
|
|
}
|
|
fc_fcp_srr(fsp, r_ctl, offset);
|
|
} else if (e_stat & ESB_ST_SEQ_INIT) {
|
|
/*
|
|
* The remote port has the initiative, so just
|
|
* keep waiting for it to complete.
|
|
*/
|
|
fc_fcp_timer_set(fsp, get_fsp_rec_tov(fsp));
|
|
} else {
|
|
|
|
/*
|
|
* The exchange is incomplete, we have seq. initiative.
|
|
* Lost response with requested confirmation,
|
|
* lost confirmation, lost transfer ready or
|
|
* lost write data.
|
|
*
|
|
* For output, if not all data was received, ask
|
|
* for transfer ready to be repeated.
|
|
*
|
|
* If we received or sent all the data, send SRR to
|
|
* request response.
|
|
*
|
|
* If we lost a response, we may have lost some read
|
|
* data as well.
|
|
*/
|
|
r_ctl = FC_RCTL_DD_SOL_DATA;
|
|
if (data_dir == DMA_TO_DEVICE) {
|
|
r_ctl = FC_RCTL_DD_CMD_STATUS;
|
|
if (offset < fsp->data_len)
|
|
r_ctl = FC_RCTL_DD_DATA_DESC;
|
|
} else if (offset == fsp->xfer_contig_end) {
|
|
r_ctl = FC_RCTL_DD_CMD_STATUS;
|
|
} else if (fsp->xfer_contig_end < offset) {
|
|
offset = fsp->xfer_contig_end;
|
|
}
|
|
fc_fcp_srr(fsp, r_ctl, offset);
|
|
}
|
|
}
|
|
unlock_out:
|
|
fc_fcp_unlock_pkt(fsp);
|
|
out:
|
|
fc_fcp_pkt_release(fsp); /* drop hold for outstanding REC */
|
|
fc_frame_free(fp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_rec_error() - Handler for REC errors
|
|
* @fsp: The FCP packet the error is on
|
|
* @fp: The REC frame
|
|
*/
|
|
static void fc_fcp_rec_error(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
|
|
{
|
|
int error = PTR_ERR(fp);
|
|
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
goto out;
|
|
|
|
switch (error) {
|
|
case -FC_EX_CLOSED:
|
|
FC_FCP_DBG(fsp, "REC %p fid %6.6x exchange closed\n",
|
|
fsp, fsp->rport->port_id);
|
|
fc_fcp_retry_cmd(fsp, FC_ERROR);
|
|
break;
|
|
|
|
default:
|
|
FC_FCP_DBG(fsp, "REC %p fid %6.6x error unexpected error %d\n",
|
|
fsp, fsp->rport->port_id, error);
|
|
fsp->status_code = FC_CMD_PLOGO;
|
|
/* fall through */
|
|
|
|
case -FC_EX_TIMEOUT:
|
|
/*
|
|
* Assume REC or LS_ACC was lost.
|
|
* The exchange manager will have aborted REC, so retry.
|
|
*/
|
|
FC_FCP_DBG(fsp, "REC %p fid %6.6x exchange timeout retry %d/%d\n",
|
|
fsp, fsp->rport->port_id, fsp->recov_retry,
|
|
FC_MAX_RECOV_RETRY);
|
|
if (fsp->recov_retry++ < FC_MAX_RECOV_RETRY)
|
|
fc_fcp_rec(fsp);
|
|
else
|
|
fc_fcp_recovery(fsp, FC_ERROR);
|
|
break;
|
|
}
|
|
fc_fcp_unlock_pkt(fsp);
|
|
out:
|
|
fc_fcp_pkt_release(fsp); /* drop hold for outstanding REC */
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_recovery() - Handler for fcp_pkt recovery
|
|
* @fsp: The FCP pkt that needs to be aborted
|
|
*/
|
|
static void fc_fcp_recovery(struct fc_fcp_pkt *fsp, u8 code)
|
|
{
|
|
FC_FCP_DBG(fsp, "start recovery code %x\n", code);
|
|
fsp->status_code = code;
|
|
fsp->cdb_status = 0;
|
|
fsp->io_status = 0;
|
|
/*
|
|
* if this fails then we let the scsi command timer fire and
|
|
* scsi-ml escalate.
|
|
*/
|
|
fc_fcp_send_abort(fsp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_srr() - Send a SRR request (Sequence Retransmission Request)
|
|
* @fsp: The FCP packet the SRR is to be sent on
|
|
* @r_ctl: The R_CTL field for the SRR request
|
|
* This is called after receiving status but insufficient data, or
|
|
* when expecting status but the request has timed out.
|
|
*/
|
|
static void fc_fcp_srr(struct fc_fcp_pkt *fsp, enum fc_rctl r_ctl, u32 offset)
|
|
{
|
|
struct fc_lport *lport = fsp->lp;
|
|
struct fc_rport *rport;
|
|
struct fc_rport_libfc_priv *rpriv;
|
|
struct fc_exch *ep = fc_seq_exch(fsp->seq_ptr);
|
|
struct fc_seq *seq;
|
|
struct fcp_srr *srr;
|
|
struct fc_frame *fp;
|
|
|
|
rport = fsp->rport;
|
|
rpriv = rport->dd_data;
|
|
|
|
if (!(rpriv->flags & FC_RP_FLAGS_RETRY) ||
|
|
rpriv->rp_state != RPORT_ST_READY)
|
|
goto retry; /* shouldn't happen */
|
|
fp = fc_fcp_frame_alloc(lport, sizeof(*srr));
|
|
if (!fp)
|
|
goto retry;
|
|
|
|
srr = fc_frame_payload_get(fp, sizeof(*srr));
|
|
memset(srr, 0, sizeof(*srr));
|
|
srr->srr_op = ELS_SRR;
|
|
srr->srr_ox_id = htons(ep->oxid);
|
|
srr->srr_rx_id = htons(ep->rxid);
|
|
srr->srr_r_ctl = r_ctl;
|
|
srr->srr_rel_off = htonl(offset);
|
|
|
|
fc_fill_fc_hdr(fp, FC_RCTL_ELS4_REQ, rport->port_id,
|
|
rpriv->local_port->port_id, FC_TYPE_FCP,
|
|
FC_FCTL_REQ, 0);
|
|
|
|
seq = fc_exch_seq_send(lport, fp, fc_fcp_srr_resp,
|
|
fc_fcp_pkt_destroy,
|
|
fsp, get_fsp_rec_tov(fsp));
|
|
if (!seq)
|
|
goto retry;
|
|
|
|
fsp->recov_seq = seq;
|
|
fsp->xfer_len = offset;
|
|
fsp->xfer_contig_end = offset;
|
|
fsp->state &= ~FC_SRB_RCV_STATUS;
|
|
fc_fcp_pkt_hold(fsp); /* hold for outstanding SRR */
|
|
return;
|
|
retry:
|
|
fc_fcp_retry_cmd(fsp, FC_TRANS_RESET);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_srr_resp() - Handler for SRR response
|
|
* @seq: The sequence the SRR is on
|
|
* @fp: The SRR frame
|
|
* @arg: The FCP packet the SRR is on
|
|
*/
|
|
static void fc_fcp_srr_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg)
|
|
{
|
|
struct fc_fcp_pkt *fsp = arg;
|
|
struct fc_frame_header *fh;
|
|
|
|
if (IS_ERR(fp)) {
|
|
fc_fcp_srr_error(fsp, fp);
|
|
return;
|
|
}
|
|
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
goto out;
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
/*
|
|
* BUG? fc_fcp_srr_error calls fc_exch_done which would release
|
|
* the ep. But if fc_fcp_srr_error had got -FC_EX_TIMEOUT,
|
|
* then fc_exch_timeout would be sending an abort. The fc_exch_done
|
|
* call by fc_fcp_srr_error would prevent fc_exch.c from seeing
|
|
* an abort response though.
|
|
*/
|
|
if (fh->fh_type == FC_TYPE_BLS) {
|
|
fc_fcp_unlock_pkt(fsp);
|
|
return;
|
|
}
|
|
|
|
switch (fc_frame_payload_op(fp)) {
|
|
case ELS_LS_ACC:
|
|
fsp->recov_retry = 0;
|
|
fc_fcp_timer_set(fsp, get_fsp_rec_tov(fsp));
|
|
break;
|
|
case ELS_LS_RJT:
|
|
default:
|
|
fc_fcp_recovery(fsp, FC_ERROR);
|
|
break;
|
|
}
|
|
fc_fcp_unlock_pkt(fsp);
|
|
out:
|
|
fc_exch_done(seq);
|
|
fc_frame_free(fp);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_srr_error() - Handler for SRR errors
|
|
* @fsp: The FCP packet that the SRR error is on
|
|
* @fp: The SRR frame
|
|
*/
|
|
static void fc_fcp_srr_error(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
|
|
{
|
|
if (fc_fcp_lock_pkt(fsp))
|
|
goto out;
|
|
switch (PTR_ERR(fp)) {
|
|
case -FC_EX_TIMEOUT:
|
|
FC_FCP_DBG(fsp, "SRR timeout, retries %d\n", fsp->recov_retry);
|
|
if (fsp->recov_retry++ < FC_MAX_RECOV_RETRY)
|
|
fc_fcp_rec(fsp);
|
|
else
|
|
fc_fcp_recovery(fsp, FC_TIMED_OUT);
|
|
break;
|
|
case -FC_EX_CLOSED: /* e.g., link failure */
|
|
FC_FCP_DBG(fsp, "SRR error, exchange closed\n");
|
|
/* fall through */
|
|
default:
|
|
fc_fcp_retry_cmd(fsp, FC_ERROR);
|
|
break;
|
|
}
|
|
fc_fcp_unlock_pkt(fsp);
|
|
out:
|
|
fc_exch_done(fsp->recov_seq);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_lport_queue_ready() - Determine if the lport and it's queue is ready
|
|
* @lport: The local port to be checked
|
|
*/
|
|
static inline int fc_fcp_lport_queue_ready(struct fc_lport *lport)
|
|
{
|
|
/* lock ? */
|
|
return (lport->state == LPORT_ST_READY) &&
|
|
lport->link_up && !lport->qfull;
|
|
}
|
|
|
|
/**
|
|
* fc_queuecommand() - The queuecommand function of the SCSI template
|
|
* @shost: The Scsi_Host that the command was issued to
|
|
* @cmd: The scsi_cmnd to be executed
|
|
*
|
|
* This is the i/o strategy routine, called by the SCSI layer.
|
|
*/
|
|
int fc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *sc_cmd)
|
|
{
|
|
struct fc_lport *lport = shost_priv(shost);
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
|
|
struct fc_fcp_pkt *fsp;
|
|
int rval;
|
|
int rc = 0;
|
|
struct fc_stats *stats;
|
|
|
|
rval = fc_remote_port_chkready(rport);
|
|
if (rval) {
|
|
sc_cmd->result = rval;
|
|
sc_cmd->scsi_done(sc_cmd);
|
|
return 0;
|
|
}
|
|
|
|
if (!*(struct fc_remote_port **)rport->dd_data) {
|
|
/*
|
|
* rport is transitioning from blocked/deleted to
|
|
* online
|
|
*/
|
|
sc_cmd->result = DID_IMM_RETRY << 16;
|
|
sc_cmd->scsi_done(sc_cmd);
|
|
goto out;
|
|
}
|
|
|
|
if (!fc_fcp_lport_queue_ready(lport)) {
|
|
if (lport->qfull) {
|
|
if (fc_fcp_can_queue_ramp_down(lport))
|
|
shost_printk(KERN_ERR, lport->host,
|
|
"libfc: queue full, "
|
|
"reducing can_queue to %d.\n",
|
|
lport->host->can_queue);
|
|
}
|
|
rc = SCSI_MLQUEUE_HOST_BUSY;
|
|
goto out;
|
|
}
|
|
|
|
fsp = fc_fcp_pkt_alloc(lport, GFP_ATOMIC);
|
|
if (fsp == NULL) {
|
|
rc = SCSI_MLQUEUE_HOST_BUSY;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* build the libfc request pkt
|
|
*/
|
|
fsp->cmd = sc_cmd; /* save the cmd */
|
|
fsp->rport = rport; /* set the remote port ptr */
|
|
|
|
/*
|
|
* set up the transfer length
|
|
*/
|
|
fsp->data_len = scsi_bufflen(sc_cmd);
|
|
fsp->xfer_len = 0;
|
|
|
|
/*
|
|
* setup the data direction
|
|
*/
|
|
stats = per_cpu_ptr(lport->stats, get_cpu());
|
|
if (sc_cmd->sc_data_direction == DMA_FROM_DEVICE) {
|
|
fsp->req_flags = FC_SRB_READ;
|
|
stats->InputRequests++;
|
|
stats->InputBytes += fsp->data_len;
|
|
} else if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
|
|
fsp->req_flags = FC_SRB_WRITE;
|
|
stats->OutputRequests++;
|
|
stats->OutputBytes += fsp->data_len;
|
|
} else {
|
|
fsp->req_flags = 0;
|
|
stats->ControlRequests++;
|
|
}
|
|
put_cpu();
|
|
|
|
/*
|
|
* send it to the lower layer
|
|
* if we get -1 return then put the request in the pending
|
|
* queue.
|
|
*/
|
|
rval = fc_fcp_pkt_send(lport, fsp);
|
|
if (rval != 0) {
|
|
fsp->state = FC_SRB_FREE;
|
|
fc_fcp_pkt_release(fsp);
|
|
rc = SCSI_MLQUEUE_HOST_BUSY;
|
|
}
|
|
out:
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(fc_queuecommand);
|
|
|
|
/**
|
|
* fc_io_compl() - Handle responses for completed commands
|
|
* @fsp: The FCP packet that is complete
|
|
*
|
|
* Translates fcp_pkt errors to a Linux SCSI errors.
|
|
* The fcp packet lock must be held when calling.
|
|
*/
|
|
static void fc_io_compl(struct fc_fcp_pkt *fsp)
|
|
{
|
|
struct fc_fcp_internal *si;
|
|
struct scsi_cmnd *sc_cmd;
|
|
struct fc_lport *lport;
|
|
unsigned long flags;
|
|
|
|
/* release outstanding ddp context */
|
|
fc_fcp_ddp_done(fsp);
|
|
|
|
fsp->state |= FC_SRB_COMPL;
|
|
if (!(fsp->state & FC_SRB_FCP_PROCESSING_TMO)) {
|
|
spin_unlock_bh(&fsp->scsi_pkt_lock);
|
|
del_timer_sync(&fsp->timer);
|
|
spin_lock_bh(&fsp->scsi_pkt_lock);
|
|
}
|
|
|
|
lport = fsp->lp;
|
|
si = fc_get_scsi_internal(lport);
|
|
|
|
/*
|
|
* if can_queue ramp down is done then try can_queue ramp up
|
|
* since commands are completing now.
|
|
*/
|
|
if (si->last_can_queue_ramp_down_time)
|
|
fc_fcp_can_queue_ramp_up(lport);
|
|
|
|
sc_cmd = fsp->cmd;
|
|
CMD_SCSI_STATUS(sc_cmd) = fsp->cdb_status;
|
|
switch (fsp->status_code) {
|
|
case FC_COMPLETE:
|
|
if (fsp->cdb_status == 0) {
|
|
/*
|
|
* good I/O status
|
|
*/
|
|
sc_cmd->result = DID_OK << 16;
|
|
if (fsp->scsi_resid)
|
|
CMD_RESID_LEN(sc_cmd) = fsp->scsi_resid;
|
|
} else {
|
|
/*
|
|
* transport level I/O was ok but scsi
|
|
* has non zero status
|
|
*/
|
|
sc_cmd->result = (DID_OK << 16) | fsp->cdb_status;
|
|
}
|
|
break;
|
|
case FC_ERROR:
|
|
FC_FCP_DBG(fsp, "Returning DID_ERROR to scsi-ml "
|
|
"due to FC_ERROR\n");
|
|
sc_cmd->result = DID_ERROR << 16;
|
|
break;
|
|
case FC_DATA_UNDRUN:
|
|
if ((fsp->cdb_status == 0) && !(fsp->req_flags & FC_SRB_READ)) {
|
|
/*
|
|
* scsi status is good but transport level
|
|
* underrun.
|
|
*/
|
|
if (fsp->state & FC_SRB_RCV_STATUS) {
|
|
sc_cmd->result = DID_OK << 16;
|
|
} else {
|
|
FC_FCP_DBG(fsp, "Returning DID_ERROR to scsi-ml"
|
|
" due to FC_DATA_UNDRUN (trans)\n");
|
|
sc_cmd->result = DID_ERROR << 16;
|
|
}
|
|
} else {
|
|
/*
|
|
* scsi got underrun, this is an error
|
|
*/
|
|
FC_FCP_DBG(fsp, "Returning DID_ERROR to scsi-ml "
|
|
"due to FC_DATA_UNDRUN (scsi)\n");
|
|
CMD_RESID_LEN(sc_cmd) = fsp->scsi_resid;
|
|
sc_cmd->result = (DID_ERROR << 16) | fsp->cdb_status;
|
|
}
|
|
break;
|
|
case FC_DATA_OVRRUN:
|
|
/*
|
|
* overrun is an error
|
|
*/
|
|
FC_FCP_DBG(fsp, "Returning DID_ERROR to scsi-ml "
|
|
"due to FC_DATA_OVRRUN\n");
|
|
sc_cmd->result = (DID_ERROR << 16) | fsp->cdb_status;
|
|
break;
|
|
case FC_CMD_ABORTED:
|
|
if (host_byte(sc_cmd->result) == DID_TIME_OUT)
|
|
FC_FCP_DBG(fsp, "Returning DID_TIME_OUT to scsi-ml "
|
|
"due to FC_CMD_ABORTED\n");
|
|
else {
|
|
FC_FCP_DBG(fsp, "Returning DID_ERROR to scsi-ml "
|
|
"due to FC_CMD_ABORTED\n");
|
|
set_host_byte(sc_cmd, DID_ERROR);
|
|
}
|
|
sc_cmd->result |= fsp->io_status;
|
|
break;
|
|
case FC_CMD_RESET:
|
|
FC_FCP_DBG(fsp, "Returning DID_RESET to scsi-ml "
|
|
"due to FC_CMD_RESET\n");
|
|
sc_cmd->result = (DID_RESET << 16);
|
|
break;
|
|
case FC_TRANS_RESET:
|
|
FC_FCP_DBG(fsp, "Returning DID_SOFT_ERROR to scsi-ml "
|
|
"due to FC_TRANS_RESET\n");
|
|
sc_cmd->result = (DID_SOFT_ERROR << 16);
|
|
break;
|
|
case FC_HRD_ERROR:
|
|
FC_FCP_DBG(fsp, "Returning DID_NO_CONNECT to scsi-ml "
|
|
"due to FC_HRD_ERROR\n");
|
|
sc_cmd->result = (DID_NO_CONNECT << 16);
|
|
break;
|
|
case FC_CRC_ERROR:
|
|
FC_FCP_DBG(fsp, "Returning DID_PARITY to scsi-ml "
|
|
"due to FC_CRC_ERROR\n");
|
|
sc_cmd->result = (DID_PARITY << 16);
|
|
break;
|
|
case FC_TIMED_OUT:
|
|
FC_FCP_DBG(fsp, "Returning DID_BUS_BUSY to scsi-ml "
|
|
"due to FC_TIMED_OUT\n");
|
|
sc_cmd->result = (DID_BUS_BUSY << 16) | fsp->io_status;
|
|
break;
|
|
default:
|
|
FC_FCP_DBG(fsp, "Returning DID_ERROR to scsi-ml "
|
|
"due to unknown error\n");
|
|
sc_cmd->result = (DID_ERROR << 16);
|
|
break;
|
|
}
|
|
|
|
if (lport->state != LPORT_ST_READY && fsp->status_code != FC_COMPLETE)
|
|
sc_cmd->result = (DID_TRANSPORT_DISRUPTED << 16);
|
|
|
|
spin_lock_irqsave(&si->scsi_queue_lock, flags);
|
|
list_del(&fsp->list);
|
|
sc_cmd->SCp.ptr = NULL;
|
|
spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
|
|
sc_cmd->scsi_done(sc_cmd);
|
|
|
|
/* release ref from initial allocation in queue command */
|
|
fc_fcp_pkt_release(fsp);
|
|
}
|
|
|
|
/**
|
|
* fc_eh_abort() - Abort a command
|
|
* @sc_cmd: The SCSI command to abort
|
|
*
|
|
* From SCSI host template.
|
|
* Send an ABTS to the target device and wait for the response.
|
|
*/
|
|
int fc_eh_abort(struct scsi_cmnd *sc_cmd)
|
|
{
|
|
struct fc_fcp_pkt *fsp;
|
|
struct fc_lport *lport;
|
|
struct fc_fcp_internal *si;
|
|
int rc = FAILED;
|
|
unsigned long flags;
|
|
int rval;
|
|
|
|
rval = fc_block_scsi_eh(sc_cmd);
|
|
if (rval)
|
|
return rval;
|
|
|
|
lport = shost_priv(sc_cmd->device->host);
|
|
if (lport->state != LPORT_ST_READY)
|
|
return rc;
|
|
else if (!lport->link_up)
|
|
return rc;
|
|
|
|
si = fc_get_scsi_internal(lport);
|
|
spin_lock_irqsave(&si->scsi_queue_lock, flags);
|
|
fsp = CMD_SP(sc_cmd);
|
|
if (!fsp) {
|
|
/* command completed while scsi eh was setting up */
|
|
spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
|
|
return SUCCESS;
|
|
}
|
|
/* grab a ref so the fsp and sc_cmd cannot be released from under us */
|
|
fc_fcp_pkt_hold(fsp);
|
|
spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
|
|
|
|
if (fc_fcp_lock_pkt(fsp)) {
|
|
/* completed while we were waiting for timer to be deleted */
|
|
rc = SUCCESS;
|
|
goto release_pkt;
|
|
}
|
|
|
|
rc = fc_fcp_pkt_abort(fsp);
|
|
fc_fcp_unlock_pkt(fsp);
|
|
|
|
release_pkt:
|
|
fc_fcp_pkt_release(fsp);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(fc_eh_abort);
|
|
|
|
/**
|
|
* fc_eh_device_reset() - Reset a single LUN
|
|
* @sc_cmd: The SCSI command which identifies the device whose
|
|
* LUN is to be reset
|
|
*
|
|
* Set from SCSI host template.
|
|
*/
|
|
int fc_eh_device_reset(struct scsi_cmnd *sc_cmd)
|
|
{
|
|
struct fc_lport *lport;
|
|
struct fc_fcp_pkt *fsp;
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
|
|
int rc = FAILED;
|
|
int rval;
|
|
|
|
rval = fc_block_scsi_eh(sc_cmd);
|
|
if (rval)
|
|
return rval;
|
|
|
|
lport = shost_priv(sc_cmd->device->host);
|
|
|
|
if (lport->state != LPORT_ST_READY)
|
|
return rc;
|
|
|
|
FC_SCSI_DBG(lport, "Resetting rport (%6.6x)\n", rport->port_id);
|
|
|
|
fsp = fc_fcp_pkt_alloc(lport, GFP_NOIO);
|
|
if (fsp == NULL) {
|
|
printk(KERN_WARNING "libfc: could not allocate scsi_pkt\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Build the libfc request pkt. Do not set the scsi cmnd, because
|
|
* the sc passed in is not setup for execution like when sent
|
|
* through the queuecommand callout.
|
|
*/
|
|
fsp->rport = rport; /* set the remote port ptr */
|
|
|
|
/*
|
|
* flush outstanding commands
|
|
*/
|
|
rc = fc_lun_reset(lport, fsp, scmd_id(sc_cmd), sc_cmd->device->lun);
|
|
fsp->state = FC_SRB_FREE;
|
|
fc_fcp_pkt_release(fsp);
|
|
|
|
out:
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(fc_eh_device_reset);
|
|
|
|
/**
|
|
* fc_eh_host_reset() - Reset a Scsi_Host.
|
|
* @sc_cmd: The SCSI command that identifies the SCSI host to be reset
|
|
*/
|
|
int fc_eh_host_reset(struct scsi_cmnd *sc_cmd)
|
|
{
|
|
struct Scsi_Host *shost = sc_cmd->device->host;
|
|
struct fc_lport *lport = shost_priv(shost);
|
|
unsigned long wait_tmo;
|
|
|
|
FC_SCSI_DBG(lport, "Resetting host\n");
|
|
|
|
fc_lport_reset(lport);
|
|
wait_tmo = jiffies + FC_HOST_RESET_TIMEOUT;
|
|
while (!fc_fcp_lport_queue_ready(lport) && time_before(jiffies,
|
|
wait_tmo))
|
|
msleep(1000);
|
|
|
|
if (fc_fcp_lport_queue_ready(lport)) {
|
|
shost_printk(KERN_INFO, shost, "libfc: Host reset succeeded "
|
|
"on port (%6.6x)\n", lport->port_id);
|
|
return SUCCESS;
|
|
} else {
|
|
shost_printk(KERN_INFO, shost, "libfc: Host reset failed, "
|
|
"port (%6.6x) is not ready.\n",
|
|
lport->port_id);
|
|
return FAILED;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(fc_eh_host_reset);
|
|
|
|
/**
|
|
* fc_slave_alloc() - Configure the queue depth of a Scsi_Host
|
|
* @sdev: The SCSI device that identifies the SCSI host
|
|
*
|
|
* Configures queue depth based on host's cmd_per_len. If not set
|
|
* then we use the libfc default.
|
|
*/
|
|
int fc_slave_alloc(struct scsi_device *sdev)
|
|
{
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
|
|
|
|
if (!rport || fc_remote_port_chkready(rport))
|
|
return -ENXIO;
|
|
|
|
scsi_change_queue_depth(sdev, FC_FCP_DFLT_QUEUE_DEPTH);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(fc_slave_alloc);
|
|
|
|
/**
|
|
* fc_fcp_destory() - Tear down the FCP layer for a given local port
|
|
* @lport: The local port that no longer needs the FCP layer
|
|
*/
|
|
void fc_fcp_destroy(struct fc_lport *lport)
|
|
{
|
|
struct fc_fcp_internal *si = fc_get_scsi_internal(lport);
|
|
|
|
if (!list_empty(&si->scsi_pkt_queue))
|
|
printk(KERN_ERR "libfc: Leaked SCSI packets when destroying "
|
|
"port (%6.6x)\n", lport->port_id);
|
|
|
|
mempool_destroy(si->scsi_pkt_pool);
|
|
kfree(si);
|
|
lport->scsi_priv = NULL;
|
|
}
|
|
EXPORT_SYMBOL(fc_fcp_destroy);
|
|
|
|
int fc_setup_fcp(void)
|
|
{
|
|
int rc = 0;
|
|
|
|
scsi_pkt_cachep = kmem_cache_create("libfc_fcp_pkt",
|
|
sizeof(struct fc_fcp_pkt),
|
|
0, SLAB_HWCACHE_ALIGN, NULL);
|
|
if (!scsi_pkt_cachep) {
|
|
printk(KERN_ERR "libfc: Unable to allocate SRB cache, "
|
|
"module load failed!");
|
|
rc = -ENOMEM;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
void fc_destroy_fcp(void)
|
|
{
|
|
kmem_cache_destroy(scsi_pkt_cachep);
|
|
}
|
|
|
|
/**
|
|
* fc_fcp_init() - Initialize the FCP layer for a local port
|
|
* @lport: The local port to initialize the exchange layer for
|
|
*/
|
|
int fc_fcp_init(struct fc_lport *lport)
|
|
{
|
|
int rc;
|
|
struct fc_fcp_internal *si;
|
|
|
|
if (!lport->tt.fcp_cmd_send)
|
|
lport->tt.fcp_cmd_send = fc_fcp_cmd_send;
|
|
|
|
if (!lport->tt.fcp_cleanup)
|
|
lport->tt.fcp_cleanup = fc_fcp_cleanup;
|
|
|
|
if (!lport->tt.fcp_abort_io)
|
|
lport->tt.fcp_abort_io = fc_fcp_abort_io;
|
|
|
|
si = kzalloc(sizeof(struct fc_fcp_internal), GFP_KERNEL);
|
|
if (!si)
|
|
return -ENOMEM;
|
|
lport->scsi_priv = si;
|
|
si->max_can_queue = lport->host->can_queue;
|
|
INIT_LIST_HEAD(&si->scsi_pkt_queue);
|
|
spin_lock_init(&si->scsi_queue_lock);
|
|
|
|
si->scsi_pkt_pool = mempool_create_slab_pool(2, scsi_pkt_cachep);
|
|
if (!si->scsi_pkt_pool) {
|
|
rc = -ENOMEM;
|
|
goto free_internal;
|
|
}
|
|
return 0;
|
|
|
|
free_internal:
|
|
kfree(si);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(fc_fcp_init);
|