Commit Graph

28 Commits

Author SHA1 Message Date
David S. Miller 64b1f00a08 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-10-08 16:22:22 -04:00
Sylvain "ythier" Hitier 88b09a6d95 3c59x: fix bad split of cpu_to_le32(pci_map_single())
In commit 6f2b6a3005,
  # 3c59x: Add dma error checking and recovery
the intent is to split out the mapping from the byte-swapping in order to
insert a dma_mapping_error() check.

Kinda this semantic patch:

    // See http://coccinelle.lip6.fr/
    //
    // Beware, grouik-and-dirty!
    @@
    expression DEV, X, Y, Z;
    @@
    -   cpu_to_le32(pci_map_single(DEV, X, Y, Z))
    +   dma_addr_t addr = pci_map_single(DEV, X, Y, Z);
    +   if (dma_mapping_error(&DEV->dev, addr))
    +       /* snip */;
    +   cpu_to_le32(addr)

However, the #else part (of the #if DO_ZEROCOPY test) is changed this way:

    -   cpu_to_le32(pci_map_single(DEV, X, Y, Z))
    +   dma_addr_t addr = cpu_to_le32(pci_map_single(DEV, X, Y, Z));
    //                    ^^^^^^^^^^^
    //                    That mismatches the 3 other changes!
    +   if (dma_mapping_error(&DEV->dev, addr))
    +       /* snip */;
    +   cpu_to_le32(addr)

Let's remove the leftover cpu_to_le32() for coherency.

v2: Better changelog.
v3: Add Acked-by

Fixes: 6f2b6a3005
  # 3c59x: Add dma error checking and recovery
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Sylvain "ythier" Hitier <sylvain.hitier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-07 13:16:06 -04:00
David S. Miller 1f6d80358d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	arch/mips/net/bpf_jit.c
	drivers/net/can/flexcan.c

Both the flexcan and MIPS bpf_jit conflicts were cases of simple
overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-23 12:09:27 -04:00
Neil Horman 8400dd029e 3c59x: Fix bad offset spec in skb_frag_dma_map
Recently aded the use of skb_frag_dma_map to 3c59x, but didn't realize it
automatically included the frag_offset internally, as well as provided an option
to specify an extra offset in the parameter list.  We need to specify an offset
of 0 in the parameter list to avoid skb corruption that results in lost
connections.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Linux Kernel list <linux-kernel@vger.kernel.org>
CC: "David S. Miller" <davem@davemloft.net>
CC: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
2014-09-19 16:28:57 -04:00
Neil Horman 6f2b6a3005 3c59x: Add dma error checking and recovery
Noted that 3c59x has no checks on transmit for failed DMA mappings, and no
ability to unmap fragments when a single map fails in the middle of a transmit.
This patch provides error checking to ensure that dma mappings work properly,
and unrolls an skb mapping if a fragmented skb transmission has a mapping
failure to prevent leaks.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Linux Kernel list <linux-kernel@vger.kernel.org>
CC: "David S. Miller" <davem@davemloft.net>
CC: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
2014-09-19 16:28:57 -04:00
Joe Perches fe3881cf7e drivers/net: Convert remaining uses of pr_warning to pr_warn
Use the much more common pr_warn instead of pr_warning.

Other miscellanea:

o Typo fixes submiting/submitting
o Coalesce formats
o Realign arguments
o Add missing terminating '\n' to formats

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-09 20:37:08 -07:00
Neil Horman 98ea232cf6 3c59x: avoid panic in boomerang_start_xmit when finding page address:
This bug was reported on a very old kernel (RHEL6, 2.6.32-491.el6):

BUG: unable to handle kernel paging request at 00800000
IP: [<c04107b5>] nommu_map_page+0x15/0x110
*pdpt = 000000003454f001 *pde = 000000003f03d067
Oops: 0000 [#1] SMP
last sysfs file: /sys/devices/system/cpu/online
Modules linked in: nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs p4_clockmod
ipv6 ppdev parport_pc parport microcode iTCO_wdt iTCO_vendor_support 3c59x mii
dcdbas serio_raw snd_intel8x0 snd_ac97_codec ac97_bus snd_seq snd_seq_device
snd_pcm snd_timer snd soundcore snd_page_alloc i2c_i801 sg lpc_ich mfd_core ext4
jbd2 mbcache sr_mod cdrom sd_mod crc_t10dif pata_acpi ata_generic ata_piix
radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core dm_mirror dm_region_hash
dm_log dm_mod [last unloaded: mperf]

Pid: 4219, comm: nfsd Not tainted 2.6.32-491.el6.i686 #1 Dell Computer
Corporation OptiPlex GX240               /OptiPlex GX240
EIP: 0060:[<c04107b5>] EFLAGS: 00010246 CPU: 0
EIP is at nommu_map_page+0x15/0x110
EAX: 00000000 EBX: c0a83480 ECX: 00000000 EDX: 00800000
ESI: 00000000 EDI: f70e7860 EBP: e2d09b54 ESP: e2d09b24
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process nfsd (pid: 4219, ti=e2d08000 task=e2ceaaa0 task.ti=e2d08000)
Stack:
 00000056 00000000 0000000e c65efd38 00000020 00000296 00000206 00000206
<0> c050c850 c0a83480 e2cef154 00000001 e2d09ba8 f8fcd585 00000510 00000001
<0> 00000000 00000000 f5172200 f8fdac00 0039ef8c f5277020 f70e7860 00000510
Call Trace:
 [<c050c850>] ? page_address+0xd0/0xe0
 [<f8fcd585>] ? boomerang_start_xmit+0x3b5/0x520 [3c59x]
 [<c07b2975>] ? dev_hard_start_xmit+0xe5/0x400
 [<f9182b00>] ? ip6_output_finish+0x0/0xf0 [ipv6]
 [<c07ca053>] ? sch_direct_xmit+0x113/0x180
 [<c07d5588>] ? nf_hook_slow+0x68/0x120
 [<c07b2ea5>] ? dev_queue_xmit+0x1b5/0x290
 [<f9182b6d>] ? ip6_output_finish+0x6d/0xf0 [ipv6]
 [<f9184cb8>] ? ip6_xmit+0x3e8/0x490 [ipv6]
 [<f91ab9f9>] ? inet6_csk_xmit+0x289/0x2f0 [ipv6]
 [<c07f6451>] ? tcp_transmit_skb+0x431/0x7f0
 [<c07a403f>] ? __alloc_skb+0x4f/0x140
 [<c07f85a2>] ? tcp_write_xmit+0x1c2/0xa50
 [<c07f90b1>] ? __tcp_push_pending_frames+0x31/0xe0
 [<c07ea47a>] ? tcp_sendpage+0x44a/0x4b0
 [<c07ea030>] ? tcp_sendpage+0x0/0x4b0
 [<c079be1e>] ? kernel_sendpage+0x4e/0x90
 [<f8457bb9>] ? svc_send_common+0xc9/0x120 [sunrpc]
 [<f8457c85>] ? svc_sendto+0x75/0x1f0 [sunrpc]
 [<c060d0d9>] ? _atomic_dec_and_lock+0x59/0x90
 [<f87d55d0>] ? nfs3svc_encode_readres+0x0/0xc0 [nfsd]
 [<f845876d>] ? svc_authorise+0x2d/0x40 [sunrpc]
 [<f87d4410>] ? nfs3svc_release_fhandle+0x0/0x10 [nfsd]
 [<f8455721>] ? svc_process_common+0xf1/0x5a0 [sunrpc]
 [<f8457e86>] ? svc_tcp_sendto+0x36/0xa0 [sunrpc]
 [<f8461778>] ? svc_send+0x98/0xd0 [sunrpc]
 [<f87c698c>] ? nfsd+0xac/0x140 [nfsd]
 [<c04470e0>] ? complete+0x40/0x60
 [<f87c68e0>] ? nfsd+0x0/0x140 [nfsd]
 [<c04802ac>] ? kthread+0x7c/0xa0
 [<c0480230>] ? kthread+0x0/0xa0
 [<c0409f9f>] ? kernel_thread_helper+0x7/0x10
Code: 8d b6 00 00 00 00 eb f8 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5
83 ec 30 89 75 f8 31 f6 89 7d fc 89 c7 89 c8 89 5d f4 <8b> 1a 8b 4d 08 c1 eb 19
c1 e3 04 8b 9b c0 29 c7 c0 83 e3 fc 29

But the problem seems to still exist upstream.  It seems on 32 bit kernels
page_address() can reutrn a NULL value in some circumstances, and the
pci_map_single api isn't prepared to handle that (on this system it results in a
bogus pointer deference in nommu_map_page.

The fix is pretty easy, if we convert the 3c59x driver to use the more
convieient skb_frag_dma_map api we don't need to find the virtual address of the
page at all, and page gets mapped to the hardware properly.  Verified to fix the
problem as described by the reporter.

Applies to the net tree

Change Notes:

v2) Converted PCI_DMA_TODEVICE to DMA_TO_DEVICE.  Thanks Dave!

v3) Actually Run git commit after making changes to v2 :)

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: klassert@mathematik.tu-chemnitz.de
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-05 17:24:02 -07:00
Benoit Taine 9baa3c34ac PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use
We should prefer `struct pci_device_id` over `DEFINE_PCI_DEVICE_TABLE` to
meet kernel coding style guidelines.  This issue was reported by checkpatch.

A simplified version of the semantic patch that makes this change is as
follows (http://coccinelle.lip6.fr/):

// <smpl>

@@
identifier i;
declarer name DEFINE_PCI_DEVICE_TABLE;
initializer z;
@@

- DEFINE_PCI_DEVICE_TABLE(i)
+ const struct pci_device_id i[]
= z;

// </smpl>

[bhelgaas: add semantic patch]
Signed-off-by: Benoit Taine <benoit.taine@lip6.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-08-12 12:15:14 -06:00
Eric W. Biederman e5ddf351b1 3c59x: Call dev_consume_skb_any instead of dev_kfree_skb.
Replace dev_kfree_skb with dev_consume_skb_any in vortex_start_xmit
as it can be called in hard irq and other contexts.

dev_consume_skb_any is used when vortext_start_xmit directly consumes
the packet instead of dmaing it to the device.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2014-03-24 15:17:22 -07:00
Christian Engelmayer 4e6ecd442d 3c59x: Remove unused pointer in vortex_eisa_cleanup()
Remove unused network device private data pointer 'vp' in function
vortex_eisa_cleanup(). Detected by Coverity: CID 139826.

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-09 19:06:14 -08:00
Matthew Whitehead 2a2529ef2b 3c59x: Add software timestamping
Added software timestamping ability. Tested with linuxptp and synchronized
clocks to an average of less than 200 microseconds on 10 megabit ethernet.

Tested on both Vortex and Boomerang models.

Signed-off-by: Matthew Whitehead <tedheadster@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-19 14:32:52 -05:00
Yijing Wang d8535a0a02 3c59x/net: Use dev_is_pci() instead of hardcoding
Use PCI standard macro dev_is_pci() instead of hardcoding.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-06 12:51:40 -05:00
Sergei Shtylyov afd6eae13c 3c59x: consolidate error cleanup in vortex_init_one()
The PCI driver's probe() method  duplicates the error cleanup code each time it
has to do error exit. Consolidate the error cleanup code  in  one place and use
*goto* to jump to the right places.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-12 01:53:52 -07:00
Sergei Shtylyov 4fc1ad6f4b 3c59x: remove useless VORTEX_PCI() invocations
It's suboptimal to invoke quite complex VORTEX_PCI() macro every time we want
to get a 'struct pci_dev *' when we already have it in a variable...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:34:20 -07:00
Sergei Shtylyov 4b264a1676 3c59x: fix PCI resource management
The driver wrongly claimed I/O ports at an address returned by pci_iomap() --
even if it was passed an MMIO address.  Fix this by claiming/releasing all PCI
resources in the PCI driver's probe()/remove() methods instead and get rid of
'must_free_region' flag weirdness (why would Cardbus claim anything for us?).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11 17:40:14 -07:00
Sergei Shtylyov c81400be71 3c59x: fix freeing nonexistent resource on driver unload
When unloading the driver that drives an EISA board, a message similar to the
following one is displayed:

Trying to free nonexistent resource <0000000000013000-000000000001301f>

Then an user is unable to reload the driver because the resource it requested in
the previous load hasn't been freed. This happens most probably due to a typo in
vortex_eisa_remove() which calls release_region() with 'dev->base_addr'  instead
of 'edev->base_addr'...

Reported-by: Matthew Whitehead <tedheadster@gmail.com>
Tested-by: Matthew Whitehead <tedheadster@gmail.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-06 12:22:11 -04:00
Jiri Pirko aaeb6cdfa5 remove init of dev->perm_addr in drivers
perm_addr is initialized correctly in register_netdevice() so to init it in
drivers is no longer needed.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-08 18:00:48 -08:00
Greg Kroah-Hartman 1dd06ae8db drivers/net: fix up function prototypes after __dev* removals
The __dev* removal patches for the network drivers ended up messing up
the function prototypes for a bunch of drivers.  This patch fixes all of
them back up to be properly aligned.

Bonus is that this almost removes 100 lines of code, always a nice
surprise.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-07 14:22:22 -05:00
Bill Pemberton 3f6db0f38f 3c59x: remove __dev* attributes
CONFIG_HOTPLUG is going away as an option.  As result the __dev*
markings will be going away.

Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-03 11:16:14 -08:00
David S. Miller 32efe08d77 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c

Small minor conflict in bnx2x, wherein one commit changed how
statistics were stored in software, and another commit
fixed endianness bugs wrt. reading the values provided by
the chip in memory.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-19 16:03:15 -05:00
Eric Dumazet 3013dc0cce 3c59x: shorten timer period for slave devices
Jean Delvare reported bonding on top of 3c59x adapters was not detecting
network cable removal fast enough.

3c59x indeed uses a 60 seconds timer to check link status if carrier is
on, and 5 seconds if carrier is off.

This patch reduces timer period to 5 seconds if device is a bonding
slave.

Reported-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-14 16:28:23 -05:00
Pradeep A Dalvi 1d26643054 netdev: ethernet dev_alloc_skb to netdev_alloc_skb
Replaced deprecating dev_alloc_skb with netdev_alloc_skb in drivers/net/ethernet
  - Removed extra skb->dev = dev after netdev_alloc_skb

Signed-off-by: Pradeep A Dalvi <netdev@pradeepdalvi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-06 11:41:20 -05:00
Joe Perches 41de8d4cff drivers/net: Remove alloc_etherdev error messages
alloc_etherdev has a generic OOM/unable to alloc message.
Remove the duplicative messages after alloc_etherdev calls.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-31 16:20:48 -05:00
Rick Jones 68aad78c50 sweep the floors and convert some .get_drvinfo routines to strlcpy
Per the mention made by Ben Hutchings that strlcpy is now the preferred
string copy routine for a .get_drvinfo routine, do a bit of floor
sweeping and convert some of the as-yet unconverted ethernet drivers to
it.

Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-08 15:11:57 -05:00
Eric Dumazet 9e903e0852 net: add skb frag size accessors
To ease skb->truesize sanitization, its better to be able to localize
all references to skb frags size.

Define accessors : skb_frag_size() to fetch frag size, and
skb_frag_size_{set|add|sub}() to manipulate it.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19 03:10:46 -04:00
Ian Campbell 7b63e3a8ff 3c59x: convert to SKB paged frag API.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-30 17:57:58 -04:00
Jiri Pirko afc4b13df1 net: remove use of ndo_set_multicast_list in drivers
replace it by ndo_set_rx_mode

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-17 20:22:03 -07:00
Jeff Kirsher ca7a8e8526 3c*/acenic/typhoon: Move 3Com Ethernet drivers
Moves the 3Com drivers into drivers/net/ethernet/3com/ and the necessary
Kconfig and Makefile changes.

Did not move the following drivers becuase they use a non-3Com
chipset: 3c503, 3c505, 3c507, 3c523 and 3c527

CC: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
CC: David Dillow <dave@thedillows.org>
CC: Jes Sorensen <jes@trained-monkey.org>
CC: Alan Cox <alan@linux.intel.com>
CC: David Hinds <dahinds@users.sourceforge.net>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: David Dillow <dave@thedillows.org>
2011-08-10 19:53:41 -07:00