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2012-07-17NFS: Split out NFS v2 inode operationsBryan Schumaker
This patch moves the NFS v2 file and directory inode functions into files that are only compiled whet CONFIG_NFS_V2 is enabled. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-17pstore/ram: Add ftrace messages handlingAnton Vorontsov
The ftrace log size is configurable via ramoops.ftrace_size module option, and the log itself is available via <pstore-mount>/ftrace-ramoops file. Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-17pstore: Add persistent function tracingAnton Vorontsov
With this support kernel can save function call chain log into a persistent ram buffer that can be decoded and dumped after reboot through pstore filesystem. It can be used to determine what function was last called before a reset or panic. We store the log in a binary format and then decode it at read time. p.s. Mostly the code comes from trace_persistent.c driver found in the Android git tree, written by Colin Cross <ccross@android.com> (according to sign-off history). I reworked the driver a little bit, and ported it to pstore. Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-17pstore: Introduce write_buf backend callbackAnton Vorontsov
For function tracing we need to stop using pstore.buf directly, since in a tracing callback we can't use spinlocks, and thus we can't safely use the global buffer. With write_buf callback, backends no longer need to access pstore.buf directly, and thus we can pass any buffers (e.g. allocated on stack). Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-17pstore/ram_core: Get rid of prz->ecc enable/disable flagAnton Vorontsov
Nowadays we can use prz->ecc_size as a flag, no need for the special member in the prz struct. Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-17pstore/ram: Make ECC size configurableAnton Vorontsov
This is now pretty straightforward: instead of using bool, just pass an integer. For backwards compatibility ramoops.ecc=1 means 16 bytes ECC (using 1 byte for ECC isn't much of use anyway). Suggested-by: Arve Hjønnevåg <arve@android.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-17pstore/ram_core: Get rid of prz->ecc_symsize and prz->ecc_polyAnton Vorontsov
The struct members were never used anywhere outside of persistent_ram_init_ecc(), so there's actually no need for them to be in the struct. If we ever want to make polynomial or symbol size configurable, it would make more sense to just pass initialized rs_decoder to the persistent_ram init functions. Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-17extcon: spelling of detach in function docPeter Meerwald
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-17team: add netpoll supportJiri Pirko
It's done in very similar way this is done in bonding and bridge. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-17netpoll: move np->dev and np->dev_name init into __netpoll_setup()Jiri Pirko
Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-17ipv4: Add FIB nexthop exceptions.David S. Miller
In a regime where we have subnetted route entries, we need a way to store persistent storage about destination specific learned values such as redirects and PMTU values. This is implemented here via nexthop exceptions. The initial implementation is a 2048 entry hash table with relaiming starting at chain length 5. A more sophisticated scheme can be devised if that proves necessary. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) IPVS oops'ers: a) Should not reset skb->nf_bridge in forwarding hook (Lin Ming) b) 3.4 commit can cause ip_vs_control_cleanup to be invoked after the ipvs_core_ops are unregistered during rmmod (Julian ANastasov) 2) ixgbevf bringup failure can crash in TX descriptor cleanup (Alexander Duyck) 3) AX25 switch missing break statement hoses ROSE sockets (Alan Cox) 4) CAIF accesses freed per-net memory (Sjur Brandeland) 5) Network cgroup code has out-or-bounds accesses (Eric DUmazet), and accesses freed memory (Gao Feng) 6) Fix a crash in SCTP reported by Dave Jones caused by freeing an association still on a list (Neil HOrman) 7) __netdev_alloc_skb() regresses on GFP_DMA using drivers because that GFP flag is not being retained for the allocation (Eric Dumazet). 8) Missing NULL hceck in sch_sfb netlink message parsing (Alan Cox) 9) bnx2 crashes because TX index iteration is not bounded correctly (Michael Chan) 10) IPoIB generates warnings in TCP queue collapsing (via skb_try_coalesce) because it does not set skb->truesize correctly (Eric Dumazet) 11) vlan_info objects leak for the implicit vlan with ID 0 (Amir Hanania) 12) A fix for TX time stamp handling in gianfar does not transfer socket ownership from one packet to another correctly, resulting in a socket write space imbalance (Eric Dumazet) 13) Julia Lawall found several cases where we do a list iteration, and then at the loop termination unconditionally assume we ended up with real list object, rather than the list head itself (CNIC, RXRPC, mISDN). 14) The bonding driver handles procfs moving incorrectly when a device it manages is moved from one namespace to another (Eric Biederman) 15) Missing memory barriers in stmmac descriptor accesses result in various crashes (Deepak Sikri) 16) Fix handling of broadcast packets in batman-adv (Simon Wunderlich) 17) Properly check the sanity of sendmsg() lengths in ieee802154's dgram_sendmsg(). Dave Jones and others have hit and reported this bug (Sasha Levin) 18) Some drivers (b44 and b43legacy) on 64-bit machines stopped working because of how netdev_alloc_skb() was adjusted. Such drivers should now use alloc_skb() for obtaining bounce buffers. (Eric Dumazet) 19) atl1c mis-managed it's link state in that it stops the queue by hand on link down. The generic networking takes care of that and this double stop locks the queue down. So simply removing the driver's queue stop call fixes the problem (Cloud Ren) 20) Fix out-of-memory due to mis-accounting in net_em packet scheduler (Eric Dumazet) 21) If DCB and SR-IOV are configured at the same time in IXGBE the chip will hang because this is not supported (Alexander Duyck) 22) A commit to stop drivers using netdev->base_addr broke the CNIC driver (Michael Chan) 23) Timeout regression in ipset caused by an attempt to fix an overflow bug (Jozsef Kadlecsik). 24) mac80211 minstrel code allocates memory using incorrect size (Thomas Huehn) 25) llcp_sock_getname() needs to check for a NULL device otherwise we OOPS (Sasha Levin) 26) mwifiex leaks memory (Bing Zhao) 27) Propagate iwlwifi fix to iwlegacy, even when we're not associated we need to monitor for stuck queues in the watchdog handler (Stanislaw Geuszka) * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits) ipvs: fix oops in ip_vs_dst_event on rmmod ipvs: fix oops on NAT reply in br_nf context ixgbevf: Fix panic when loading driver ax25: Fix missing break MAINTAINERS: reflect actual changes in IEEE 802.15.4 maintainership caif: Fix access to freed pernet memory net: cgroup: fix access the unallocated memory in netprio cgroup ixgbevf: Prevent RX/TX statistics getting reset to zero sctp: Fix list corruption resulting from freeing an association on a list net: respect GFP_DMA in __netdev_alloc_skb() e1000e: fix test for PHY being accessible on 82577/8/9 and I217 e1000e: Correct link check logic for 82571 serdes sch_sfb: Fix missing NULL check bnx2: Fix bug in bnx2_free_tx_skbs(). IPoIB: fix skb truesize underestimatiom net: Fix memory leak - vlan_info struct gianfar: fix potential sk_wmem_alloc imbalance drivers/net/ethernet/broadcom/cnic.c: remove invalid reference to list iterator variable net/rxrpc/ar-peer.c: remove invalid reference to list iterator variable drivers/isdn/mISDN/stack.c: remove invalid reference to list iterator variable ...
2012-07-17Merge branch 'fixes-for-linus' of ↵Linus Torvalds
git://git.linaro.org/people/mszyprowski/linux-dma-mapping Pull CMA and DMA-mapping fixes from Marek Szyprowski: "Another set of minor fixups for recently merged Contiguous Memory Allocator and ARM DMA-mapping changes. Those patches fix mysterious crashes on systems with CMA and Himem enabled as well as some corner cases caused by typical off-by-one bug." * 'fixes-for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: ARM: dma-mapping: modify condition check while freeing pages mm: cma: fix condition check when setting global cma area mm: cma: don't replace lowmem pages with highmem
2012-07-17tcp: implement RFC 5961 4.2Eric Dumazet
Implement the RFC 5691 mitigation against Blind Reset attack using SYN bit. Section 4.2 of RFC 5961 advises to send a Challenge ACK and drop incoming packet, instead of resetting the session. Add a new SNMP counter to count number of challenge acks sent in response to SYN packets. (netstat -s | grep TCPSYNChallenge) Remove obsolete TCPAbortOnSyn, since we no longer abort a TCP session because of a SYN flag. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Kiran Kumar Kella <kkiran@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-17net: Pass optional SKB and SK arguments to dst_ops->{update_pmtu,redirect}()David S. Miller
This will be used so that we can compose a full flow key. Even though we have a route in this context, we need more. In the future the routes will be without destination address, source address, etc. keying. One ipv4 route will cover entire subnets, etc. In this environment we have to have a way to possess persistent storage for redirects and PMTU information. This persistent storage will exist in the FIB tables, and that's why we'll need to be able to rebuild a full lookup flow key here. Using that flow key will do a fib_lookup() and create/update the persistent entry. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-17cfg80211: add cellular base station regulatory hint supportLuis R. Rodriguez
Cellular base stations can provide hints to cfg80211 about where they think we are. This can be done for example on a cell phone. To enable these hints we simply allow them through as user regulatory hints but we allow userspace to clasify the hint as either coming directly from the user or coming from a cellular base station. This option is only available when you enable CONFIG_CFG80211_CERTIFICATION_ONUS. The base station hints themselves will not be processed by the core unless at least one device on the system supports this feature. Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-17regulator: tps65910: set input_supply on desc unconditionallyLaxman Dewangan
Set the supply_name in the regulator descriptor unconditionally and make this parameter as required parameter in the device node for successfully registration of the regulator. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-17Merge tag 'v3.5-rc7' into arm/tegraJoerg Roedel
This solves the merge conflicts while creating the next branch. Linux 3.5-rc7 Conflicts: drivers/iommu/tegra-smmu.c
2012-07-17ipvs: fix oops on NAT reply in br_nf contextLin Ming
IPVS should not reset skb->nf_bridge in FORWARD hook by calling nf_reset for NAT replies. It triggers oops in br_nf_forward_finish. [ 579.781508] BUG: unable to handle kernel NULL pointer dereference at 0000000000000004 [ 579.781669] IP: [<ffffffff817b1ca5>] br_nf_forward_finish+0x58/0x112 [ 579.781792] PGD 218f9067 PUD 0 [ 579.781865] Oops: 0000 [#1] SMP [ 579.781945] CPU 0 [ 579.781983] Modules linked in: [ 579.782047] [ 579.782080] [ 579.782114] Pid: 4644, comm: qemu Tainted: G W 3.5.0-rc5-00006-g95e69f9 #282 Hewlett-Packard /30E8 [ 579.782300] RIP: 0010:[<ffffffff817b1ca5>] [<ffffffff817b1ca5>] br_nf_forward_finish+0x58/0x112 [ 579.782455] RSP: 0018:ffff88007b003a98 EFLAGS: 00010287 [ 579.782541] RAX: 0000000000000008 RBX: ffff8800762ead00 RCX: 000000000001670a [ 579.782653] RDX: 0000000000000000 RSI: 000000000000000a RDI: ffff8800762ead00 [ 579.782845] RBP: ffff88007b003ac8 R08: 0000000000016630 R09: ffff88007b003a90 [ 579.782957] R10: ffff88007b0038e8 R11: ffff88002da37540 R12: ffff88002da01a02 [ 579.783066] R13: ffff88002da01a80 R14: ffff88002d83c000 R15: ffff88002d82a000 [ 579.783177] FS: 0000000000000000(0000) GS:ffff88007b000000(0063) knlGS:00000000f62d1b70 [ 579.783306] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b [ 579.783395] CR2: 0000000000000004 CR3: 00000000218fe000 CR4: 00000000000027f0 [ 579.783505] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 579.783684] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 579.783795] Process qemu (pid: 4644, threadinfo ffff880021b20000, task ffff880021aba760) [ 579.783919] Stack: [ 579.783959] ffff88007693cedc ffff8800762ead00 ffff88002da01a02 ffff8800762ead00 [ 579.784110] ffff88002da01a02 ffff88002da01a80 ffff88007b003b18 ffffffff817b26c7 [ 579.784260] ffff880080000000 ffffffff81ef59f0 ffff8800762ead00 ffffffff81ef58b0 [ 579.784477] Call Trace: [ 579.784523] <IRQ> [ 579.784562] [ 579.784603] [<ffffffff817b26c7>] br_nf_forward_ip+0x275/0x2c8 [ 579.784707] [<ffffffff81704b58>] nf_iterate+0x47/0x7d [ 579.784797] [<ffffffff817ac32e>] ? br_dev_queue_push_xmit+0xae/0xae [ 579.784906] [<ffffffff81704bfb>] nf_hook_slow+0x6d/0x102 [ 579.784995] [<ffffffff817ac32e>] ? br_dev_queue_push_xmit+0xae/0xae [ 579.785175] [<ffffffff8187fa95>] ? _raw_write_unlock_bh+0x19/0x1b [ 579.785179] [<ffffffff817ac417>] __br_forward+0x97/0xa2 [ 579.785179] [<ffffffff817ad366>] br_handle_frame_finish+0x1a6/0x257 [ 579.785179] [<ffffffff817b2386>] br_nf_pre_routing_finish+0x26d/0x2cb [ 579.785179] [<ffffffff817b2cf0>] br_nf_pre_routing+0x55d/0x5c1 [ 579.785179] [<ffffffff81704b58>] nf_iterate+0x47/0x7d [ 579.785179] [<ffffffff817ad1c0>] ? br_handle_local_finish+0x44/0x44 [ 579.785179] [<ffffffff81704bfb>] nf_hook_slow+0x6d/0x102 [ 579.785179] [<ffffffff817ad1c0>] ? br_handle_local_finish+0x44/0x44 [ 579.785179] [<ffffffff81551525>] ? sky2_poll+0xb35/0xb54 [ 579.785179] [<ffffffff817ad62a>] br_handle_frame+0x213/0x229 [ 579.785179] [<ffffffff817ad417>] ? br_handle_frame_finish+0x257/0x257 [ 579.785179] [<ffffffff816e3b47>] __netif_receive_skb+0x2b4/0x3f1 [ 579.785179] [<ffffffff816e69fc>] process_backlog+0x99/0x1e2 [ 579.785179] [<ffffffff816e6800>] net_rx_action+0xdf/0x242 [ 579.785179] [<ffffffff8107e8a8>] __do_softirq+0xc1/0x1e0 [ 579.785179] [<ffffffff8135a5ba>] ? trace_hardirqs_off_thunk+0x3a/0x6c [ 579.785179] [<ffffffff8188812c>] call_softirq+0x1c/0x30 The steps to reproduce as follow, 1. On Host1, setup brige br0(192.168.1.106) 2. Boot a kvm guest(192.168.1.105) on Host1 and start httpd 3. Start IPVS service on Host1 ipvsadm -A -t 192.168.1.106:80 -s rr ipvsadm -a -t 192.168.1.106:80 -r 192.168.1.105:80 -m 4. Run apache benchmark on Host2(192.168.1.101) ab -n 1000 http://192.168.1.106/ ip_vs_reply4 ip_vs_out handle_response ip_vs_notrack nf_reset() { skb->nf_bridge = NULL; } Actually, IPVS wants in this case just to replace nfct with untracked version. So replace the nf_reset(skb) call in ip_vs_notrack() with a nf_conntrack_put(skb->nfct) call. Signed-off-by: Lin Ming <mlin@ss.pku.edu.cn> Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-07-17cfg80211: support TX error rate CQMThomas Pedersen
Let the user configure serveral TX error conection quality monitoring parameters: % error rate, survey interval, and # of attempted packets. On exceeding the TX failure rate over the given interval, the driver will send a CQM notify event with the actual TX failure rate and packets attempted. Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-17tcp: implement RFC 5961 3.2Eric Dumazet
Implement the RFC 5691 mitigation against Blind Reset attack using RST bit. Idea is to validate incoming RST sequence, to match RCV.NXT value, instead of previouly accepted window : (RCV.NXT <= SEG.SEQ < RCV.NXT+RCV.WND) If sequence is in window but not an exact match, send a "challenge ACK", so that the other part can resend an RST with the appropriate sequence. Add a new sysctl, tcp_challenge_ack_limit, to limit number of challenge ACK sent per second. Add a new SNMP counter to count number of challenge acks sent. (netstat -s | grep TCPChallengeACK) Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Kiran Kumar Kella <kkiran@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-16etherdevice: Rename random_ether_addr to eth_random_addrJoe Perches
Add some API symmetry to eth_broadcast_addr and add a #define to the old name for backward compatibility. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-16Merge branch 'tipc_net-next' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Paul Gortmaker says: ==================== This is the same eight commits as sent for review last week[1], with just the incorporation of the pr_fmt change as suggested by JoeP. There was no additional change requests, so unless you can see something else you'd like me to change, please pull. ... Erik Hugne (5): tipc: use standard printk shortcut macros (pr_err etc.) tipc: remove TIPC packet debugging functions and macros tipc: simplify print buffer handling in tipc_printf tipc: phase out most of the struct print_buf usage tipc: remove print_buf and deprecated log buffer code Paul Gortmaker (3): tipc: factor stats struct out of the larger link struct tipc: limit error messages relating to memory leak to one line tipc: simplify link_print by divorcing it from using tipc_printf ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-16net: make sock diag per-namespaceAndrey Vagin
Before this patch sock_diag works for init_net only and dumps information about sockets from all namespaces. This patch expands sock_diag for all name-spaces. It creates a netlink kernel socket for each netns and filters data during dumping. v2: filter accoding with netns in all places remove an unused variable. Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Cc: Pavel Emelyanov <xemul@parallels.com> CC: Eric Dumazet <eric.dumazet@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Andrew Vagin <avagin@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-16tcp: add OFO snmp countersEric Dumazet
Add three SNMP TCP counters, to better track TCP behavior at global stage (netstat -s), when packets are received Out Of Order (OFO) TCPOFOQueue : Number of packets queued in OFO queue TCPOFODrop : Number of packets meant to be queued in OFO but dropped because socket rcvbuf limit hit. TCPOFOMerge : Number of packets in OFO that were merged with other packets. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-17ACPICA: Update to version 20120711Bob Moore
Version 20120711. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-17ACPICA: AcpiSrc: Fix some translation issues for Linux conversionBob Moore
Fixes issues like this: i_aSL -> iASL 00-7_f -> 00-7F local_fADT -> local_FADT execute_oSI -> execute_OSI Also, in function headers, the parameters are now translated to lower case (with underscores if necessary.) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-17ACPICA: Update header files copyrights to 2012Bob Moore
Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-17ACPICA: Add new ACPI table load/unload external interfacesBob Moore
Add acpi_load_table and acpi_unload_parent_table to support host-directed dynamic table load/unload. Intended to support hotplug addition and removal of SSDTs. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-17ACPICA: Add new interfaces for BIOS(firmware) errors and warningsBob Moore
These new interfaces will be deployed across ACPICA in order to point a finger directly at any detected BIOS issues -- such as issues with ACPI tables, etc. https://www.acpica.org/bugzilla/show_bug.cgi?id=843 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-17ACPICA: Split exception code utilities to a new file, utexcep.cBob Moore
Simplifies sharing of these functions. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-16Merge 3.5-rc7 into driver-core-nextGreg Kroah-Hartman
This pulls in the printk fixes to the driver-core-next branch. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16driver-core: Move kobj_to_dev from genhd.h to device.hLars-Peter Clausen
This function is not really specific to the genhd layer and there are various re-implementations or open-coded variants of it all throughout the kernel. To avoid further duplications move the function to a more generic place. While moving also convert it from a macro to a inline function. Potential users of this function can be detected and converted using the following coccinelle patch: // <smpl> @@ expression k; @@ -container_of(k, struct device, kobj) +kobj_to_dev(kobj) // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: add USB_VENDOR_AND_INTERFACE_INFO() macroGustavo Padovan
A lot of Broadcom Bluetooth devices provides vendor specific interface class and we are getting flooded by patches adding new device support. This change will help us enable support for any other Broadcom with vendor specific device that arrives in the future. Only the product id changes for those devices, so this macro would be perfect for us: { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) } Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Acked-by: Henrik Rydberg <rydberg@bitmath.se> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16target: Add generation of LOGICAL BLOCK ADDRESS OUT OF RANGERoland Dreier
Many SCSI commands are defined to return a CHECK CONDITION / ILLEGAL REQUEST with ASC set to LOGICAL BLOCK ADDRESS OUT OF RANGE if the initiator sends a command that accesses a too-big LBA. Add an enum value and case entries so that target code can return this status. Signed-off-by: Roland Dreier <roland@purestorage.com> Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: Remove se_session.sess_wait_listRoland Dreier
Since we set se_session.sess_tearing_down and stop new commands from being added to se_session.sess_cmd_list before we wait for commands to finish when freeing a session, there's no need for a separate sess_wait_list -- if we let new commands be added to sess_cmd_list after setting sess_tearing_down, that would be a bug that breaks the logic of waiting in-flight commands. Also rename target_splice_sess_cmd_list() to target_sess_cmd_list_set_waiting(), since we are no longer splicing onto a separate list. Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: Un-export target_get_sess_cmd()Roland Dreier
There are no in-tree users of target_get_sess_cmd() outside of target_core_transport.c. Any new code should use the higher-level target_submit_cmd() interface. So let's un-export target_get_sess_cmd() and make it static to the one file where it's actually used. (nab: Fix up minor fuzz to for-next) Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: replace the processing thread with a TMR work queueChristoph Hellwig
The last functionality of the target processing thread is offloading possibly long running task management requests from the submitter context. To keep TMR semantics the same we need a single threaded ordered queue, which can be provided by a per-device workqueue with the right flags. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove transport_generic_handle_cdb_mapChristoph Hellwig
Remove this command submission path which is not used by any in-tree driver. This also removes the now unused new_cmd_map fabtric method, which a few drivers implemented despite never calling transport_generic_handle_cdb_map. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove transport_generic_handle_dataChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove transport_generic_process_writeChristoph Hellwig
Just call target_execute_cmd directly. Also, convert loopback, sbp, usb-gadget to use the newly exported target_execute_cmd(). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move unmap to struct spc_opsChristoph Hellwig
Having all the unmap payload parsing in the backed is a bit ugly, but until more drivers support it and we can find a good interface for all of them that seems the way to go. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move write_same to struct spc_opsChristoph Hellwig
Add spc_ops->execute_write_same() caller for ->execute_cmd() setup, and update IBLOCK backends to use it. (nab: add export of spc_get_write_same_sectors symbol) (roland: Carry forward: Fix range calculation in WRITE SAME emulation when num blocks == 0) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move sync_cache to struct spc_opsChristoph Hellwig
Add spc_ops->execute_sync_cache() caller for ->execute_cmd() setup, and update IBLOCK + FILEIO backends to use it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: add struct spc_ops + initial ->execute_rw pointer usageChristoph Hellwig
Remove the execute_cmd method in struct se_subsystem_api, and always use the one directly in struct se_cmd. To make life simpler for SBC virtual backends a struct spc_ops that is passed to sbc_parse_cmd is added. For now it only contains an execute_rw member, but more will follow with the subsequent commits. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove dead SCF_ flagsChristoph Hellwig
Remove the dead SCF_SE_ALLOW_EOO and SCF_DELAYED_CMD_FROM_SAM_ATTR from se_cmd_flags_table. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move ref_cmd from the generic se_tmr_req into iscsi codeChristoph Hellwig
Also remove the unused ref_task_lun field in struct se_tmr_req. (nab: Add missing TASK_REASSIGN ref_lun vs. ref_cmd orig_fe_lun checks in iscsit_tmr_task_reassign) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove the execute listChristoph Hellwig
Since "target: Drop se_device TCQ queue_depth usage from I/O path" we always submit all commands (or back then, tasks) from __transport_execute_tasks. That means the the execute list has lots its purpose, as we can simply submit the commands that are restarted in transport_complete_task_attr directly while we walk the list. In fact doing so also solves a race in the way it currently walks to delayed_cmd_list as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move code for CDB emulationChristoph Hellwig
Move the existing code in target_core_cdb.c into the files for the command sets that the emulations implement. (roland + nab: Squash patch: Fix range calculation in WRITE SAME emulation when num blocks == 0s) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: add a parse_cdb method to the backend driversChristoph Hellwig
Instead of trying to handle all SCSI command sets in one function (transport_generic_cmd_sequencer) call out to the backend driver to perform this functionality. For pSCSI a copy of the existing code is used, but for all virtual backends we can use a new parse_sbc_cdb helper is used to provide a simple SBC emulation. For now this setups means a fair amount of duplication between pSCSI and the SBC library, but patches later in this series will sort out that problem. (nab: Fix up build failure in target_core_pscsi.c) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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