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  1. 04 Jun, 2016 12 commits
    • Andrew Lunn's avatar
      net: dsa: tag_{e}dsa.c: Remove dependency on platform data · 149cafd7
      Andrew Lunn authored 
      The platform data nr_chips is used when validating a received packet,
to ensure it comes from a know switch chip. The number of possible
switches is limited to DSA_MAX_SWITCHES, so use this as the first
validation step. The new binding allows holes in the dst->ds[] array,
so also ensure ensure there is a valid dsa_switch for this packet.
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      149cafd7
    • Andrew Lunn's avatar
      net: dsa: slave: Remove MDIO address from switch MDIO bus name · 6e8e862d
      Andrew Lunn authored 
      The DSA layer should no longer assume the switch is connected to an
MDIO bus. As a result, we cannot use the address on the MDIO bus when
forming the name of the switches internal MDIO bus for its builtin and
possibly external PHYs. The switch index is sufficient to make the
name unique, so drop the MDIO address.
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6e8e862d
    • Vivien Didelot's avatar
      net: dsa: mv88e6xxx: fix circular lock in PPU work · 762eb67b
      Vivien Didelot authored 
      Lock debugging shows that there is a possible circular lock in the PPU
work code. Switch the lock order of smi_mutex and ppu_mutex to fix this.

Here's the full trace:

    [    4.341325] ======================================================
    [    4.347519] [ INFO: possible circular locking dependency detected ]
    [    4.353800] 4.6.0 #4 Not tainted
    [    4.357039] -------------------------------------------------------
    [    4.363315] kworker/0:1/328 is trying to acquire lock:
    [    4.368463]  (&ps->smi_mutex){+.+.+.}, at: [<8049c758>] mv88e6xxx_reg_read+0x30/0x54
    [    4.376313]
    [    4.376313] but task is already holding lock:
    [    4.382160]  (&ps->ppu_mutex){+.+...}, at: [<8049cac0>] mv88e6xxx_ppu_reenable_work+0x28/0xd4
    [    4.390772]
    [    4.390772] which lock already depends on the new lock.
    [    4.390772]
    [    4.398963]
    [    4.398963] the existing dependency chain (in reverse order) is:
    [    4.406461]
    [    4.406461] -> #1 (&ps->ppu_mutex){+.+...}:
    [    4.410897]        [<806d86bc>] mutex_lock_nested+0x54/0x360
    [    4.416606]        [<8049a800>] mv88e6xxx_ppu_access_get+0x28/0x100
    [    4.422906]        [<8049b778>] mv88e6xxx_phy_read+0x90/0xdc
    [    4.428599]        [<806a4534>] dsa_slave_phy_read+0x3c/0x40
    [    4.434300]        [<804943ec>] mdiobus_read+0x68/0x80
    [    4.439481]        [<804939d4>] get_phy_device+0x58/0x1d8
    [    4.444914]        [<80493ed0>] mdiobus_scan+0x24/0xf4
    [    4.450078]        [<8049409c>] __mdiobus_register+0xfc/0x1ac
    [    4.455857]        [<806a40b0>] dsa_probe+0x860/0xca8
    [    4.460934]        [<8043246c>] platform_drv_probe+0x5c/0xc0
    [    4.466627]        [<804305a0>] driver_probe_device+0x118/0x450
    [    4.472589]        [<80430b00>] __device_attach_driver+0xac/0x128
    [    4.478724]        [<8042e350>] bus_for_each_drv+0x74/0xa8
    [    4.484235]        [<804302d8>] __device_attach+0xc4/0x154
    [    4.489755]        [<80430cec>] device_initial_probe+0x1c/0x20
    [    4.495612]        [<8042f620>] bus_probe_device+0x98/0xa0
    [    4.501123]        [<8042fbd0>] deferred_probe_work_func+0x4c/0xd4
    [    4.507328]        [<8013a794>] process_one_work+0x1a8/0x604
    [    4.513030]        [<8013ac54>] worker_thread+0x64/0x528
    [    4.518367]        [<801409e8>] kthread+0xec/0x100
    [    4.523201]        [<80108f30>] ret_from_fork+0x14/0x24
    [    4.528462]
    [    4.528462] -> #0 (&ps->smi_mutex){+.+.+.}:
    [    4.532895]        [<8015ad5c>] lock_acquire+0xb4/0x1dc
    [    4.538154]        [<806d86bc>] mutex_lock_nested+0x54/0x360
    [    4.543856]        [<8049c758>] mv88e6xxx_reg_read+0x30/0x54
    [    4.549549]        [<8049cad8>] mv88e6xxx_ppu_reenable_work+0x40/0xd4
    [    4.556022]        [<8013a794>] process_one_work+0x1a8/0x604
    [    4.561707]        [<8013ac54>] worker_thread+0x64/0x528
    [    4.567053]        [<801409e8>] kthread+0xec/0x100
    [    4.571878]        [<80108f30>] ret_from_fork+0x14/0x24
    [    4.577139]
    [    4.577139] other info that might help us debug this:
    [    4.577139]
    [    4.585159]  Possible unsafe locking scenario:
    [    4.585159]
    [    4.591093]        CPU0                    CPU1
    [    4.595631]        ----                    ----
    [    4.600169]   lock(&ps->ppu_mutex);
    [    4.603693]                                lock(&ps->smi_mutex);
    [    4.609742]                                lock(&ps->ppu_mutex);
    [    4.615790]   lock(&ps->smi_mutex);
    [    4.619314]
    [    4.619314]  *** DEADLOCK ***
    [    4.619314]
    [    4.625256] 3 locks held by kworker/0:1/328:
    [    4.629537]  #0:  ("events"){.+.+..}, at: [<8013a704>] process_one_work+0x118/0x604
    [    4.637288]  #1:  ((&ps->ppu_work)){+.+...}, at: [<8013a704>] process_one_work+0x118/0x604
    [    4.645653]  #2:  (&ps->ppu_mutex){+.+...}, at: [<8049cac0>] mv88e6xxx_ppu_reenable_work+0x28/0xd4
    [    4.654714]
    [    4.654714] stack backtrace:
    [    4.659098] CPU: 0 PID: 328 Comm: kworker/0:1 Not tainted 4.6.0 #4
    [    4.665286] Hardware name: Freescale Vybrid VF5xx/VF6xx (Device Tree)
    [    4.671748] Workqueue: events mv88e6xxx_ppu_reenable_work
    [    4.677174] Backtrace:
    [    4.679674] [<8010d354>] (dump_backtrace) from [<8010d5a0>] (show_stack+0x20/0x24)
    [    4.687252]  r6:80fb3c88 r5:80fb3c88 r4:80fb4728 r3:00000002
    [    4.693003] [<8010d580>] (show_stack) from [<803b45e8>] (dump_stack+0x24/0x28)
    [    4.700246] [<803b45c4>] (dump_stack) from [<80157398>] (print_circular_bug+0x208/0x32c)
    [    4.708361] [<80157190>] (print_circular_bug) from [<8015a630>] (__lock_acquire+0x185c/0x1b80)
    [    4.716982]  r10:9ec22a00 r9:00000060 r8:8164b6bc r7:00000040 r6:00000003 r5:8163a5b4
    [    4.724905]  r4:00000003 r3:9ec22de8
    [    4.728537] [<80158dd4>] (__lock_acquire) from [<8015ad5c>] (lock_acquire+0xb4/0x1dc)
    [    4.736378]  r10:60000013 r9:00000000 r8:00000000 r7:00000000 r6:9e5e9c50 r5:80e618e0
    [    4.744301]  r4:00000000
    [    4.746879] [<8015aca8>] (lock_acquire) from [<806d86bc>] (mutex_lock_nested+0x54/0x360)
    [    4.754976]  r10:9e5e9c1c r9:80e616c4 r8:9f685ea0 r7:0000001b r6:9ec22a00 r5:8163a5b4
    [    4.762899]  r4:9e5e9c1c
    [    4.765477] [<806d8668>] (mutex_lock_nested) from [<8049c758>] (mv88e6xxx_reg_read+0x30/0x54)
    [    4.774008]  r10:80e60c5b r9:80e616c4 r8:9f685ea0 r7:0000001b r6:00000004 r5:9e5e9c10
    [    4.781930]  r4:9e5e9c1c
    [    4.784507] [<8049c728>] (mv88e6xxx_reg_read) from [<8049cad8>] (mv88e6xxx_ppu_reenable_work+0x40/0xd4)
    [    4.793907]  r7:9ffd5400 r6:9e5e9c68 r5:9e5e9cb0 r4:9e5e9c10
    [    4.799659] [<8049ca98>] (mv88e6xxx_ppu_reenable_work) from [<8013a794>] (process_one_work+0x1a8/0x604)
    [    4.809059]  r9:80e616c4 r8:9f685ea0 r7:9ffd5400 r6:80e0a1c8 r5:9f5f2e80 r4:9e5e9cb0
    [    4.816910] [<8013a5ec>] (process_one_work) from [<8013ac54>] (worker_thread+0x64/0x528)
    [    4.825010]  r10:9f5f2e80 r9:00000008 r8:80e0dc80 r7:80e0a1fc r6:80e0a1c8 r5:9f5f2e98
    [    4.832933]  r4:80e0a1c8
    [    4.835510] [<8013abf0>] (worker_thread) from [<801409e8>] (kthread+0xec/0x100)
    [    4.842827]  r10:00000000 r9:00000000 r8:00000000 r7:8013abf0 r6:9f5f2e80 r5:9ec15740
    [    4.850749]  r4:00000000
    [    4.853327] [<801408fc>] (kthread) from [<80108f30>] (ret_from_fork+0x14/0x24)
    [    4.860557]  r7:00000000 r6:00000000 r5:801408fc r4:9ec15740
Signed-off-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      762eb67b
    • Andrew Lunn's avatar
      net: dsa: slave: chip data is optional, don't dereference NULL · 0e576044
      Andrew Lunn authored 
      The new binding does not make use of dsa_chip_data, a.k.a cd.  When
retrieving the size of the EEPROM attached to a switch, don't assume
there is a cd attached to the switch structure.
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0e576044
    • David S. Miller's avatar
      net: Add docbook description for 'mtu' arg to skb_gso_validate_mtu() · 76f21b99
      David S. Miller authored 
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      76f21b99
    • David S. Miller's avatar
      sctp: Fix warning in sctp_packet_transmit_chunk() · 3b55a537
      David S. Miller authored 
      size_t objects should be printed with %Z printf format.
Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3b55a537
    • Yuval Mintz's avatar
      qed: Fix next-ptr chains for BE / 32-bit · 81b1251d
      Yuval Mintz authored 
      Commit a91eb52a ("qed: Revisit chain implementation") contains an
incorrect implementation for BE platforms, as device's regpairs containing
addresses are LE and they're not converted correctly when read back.
In addition, it raises a compilation warning for 32-bit platforms where
dma_addr_t is a 32-bit variable.
Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      81b1251d
    • David S. Miller's avatar
      Merge branch 'qed-roce-iscsi' · 03c7f70b
      David S. Miller authored 
      Yuval Mintz says:

====================
qed: RocE & iSCSI infrastructure

We plan on sending 2 new protocol drivers in the imminent future -
both our RoCE [qedr] and iSCSI [qedi] drivers. As both submissions
would be rather massive and in order to avoid collisions between them,
the common infrastructure on the qed side was prepared as an independent
patch-series to be sent ahead of those 2 submissions.

This patch series introduces in QED 2 new 'ids' - one for iscsi and
one for roce. It then goes and adds logic required for configuring
said protocols in HW. Notice it *doesn't* actually add any client using
said ids, but rather only the infrastructure to allow their later usage.

What this patch doesn't contain is the slowpath protocol-configuration
toward the firmware. I.e., it contains register-setting logic, memory
allocations, etc., but not actual flow-related configuration specific
to the protocl. Those would be sent as part of the protocol driver
submissions.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      03c7f70b
    • Yuval Mintz's avatar
      qed: Initialize hardware for new protocols · dbb799c3
      Yuval Mintz authored 
      RoCE and iSCSI would require some added/changed hw configuration in order
to properly run; The biggest single change being the requirement of
allocating and mapping host memory for several HW blocks that aren't being
used by qede [SRC, QM, TM, etc.].

In addition, whereas qede is only using context memory for HW blocks, the
new protocol would also require task memories to be added.
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      dbb799c3
    • Yuval Mintz's avatar
      qed: Add iscsi/rdma personalities · c5ac9319
      Yuval Mintz authored 
      This patch adds in the ecore 2 new personalities in addition to
QED_PCI_ETH - QED_PCI_ISCSI and QED_PCI_ETH_ROCE.
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c5ac9319
    • Yuval Mintz's avatar
      qed: Add common HSI for new protocols · 7a9b6b8f
      Yuval Mintz authored 
      This adds the qed portion of the RoCE & iSCSI firmware HSI,
as well as adding several new common HSI files which would be required
by both qed and qed* protocols.
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7a9b6b8f
    • Yuval Mintz's avatar
      qed: Revisit chain implementation · a91eb52a
      Yuval Mintz authored 
      RoCE driver is going to need a 32-bit chain [current chain implementation
for qed* currently supports only 16-bit producer/consumer chains].

This patch adds said support, as well as doing other slight tweaks and
modifications to qed's chain API.
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a91eb52a
  3. 03 Jun, 2016 13 commits
  5. 02 Jun, 2016 9 commits
  7. 01 Jun, 2016 5 commits
  9. 31 May, 2016 1 commit
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