linux-toradex.git/drivers/net/ethernet/intel, branch v3.2.68

igb: do a reset on SR-IOV re-init if device is down

2014-08-06T17:07:37+00:00

commit 76252723e88681628a3dbb9c09c963e095476f73 upstream.

To properly re-initialize SR-IOV it is necessary to reset the device
even if it is already down. Not doing this may result in Tx unit hangs.

Signed-off-by: Stefan Assmann 
Tested-by: Aaron Brown 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller 
Signed-off-by: Ben Hutchings

ixgbe: Fix Tx Hang issue with lldpad on 82598EB

2013-09-10T00:57:16+00:00

commit 1eb9ac14c34a948bf1538bfb9034e8ab29099a64 upstream.

This patch fixes an issue with the 82598EB device, where lldpad is causing Tx
Hangs on the card as soon as it attempts to configure DCB for the device. The
adapter will continually Tx hang and reset in a loop.

Signed-off-by: Jacob Keller 
Tested-by: Phil Schmitt 
Tested-by: Jack Morgan 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller 
Signed-off-by: Ben Hutchings

ixgbe: add missing rtnl_lock in PM resume path

2013-05-13T14:02:43+00:00

commit 34948a947d1a576c10afee6d14792fd237549577 upstream.

Upon resume from standby, ixgbe may trigger the ASSERT_RTNL() in
netif_set_real_num_tx_queues(). The call stack is:
	netif_set_real_num_tx_queues
	ixgbe_set_num_queues
	ixgbe_init_interrupt_scheme
	ixgbe_resume

Signed-off-by: Benjamin Poirier 
Tested-by: Stephen Ko 
Signed-off-by: Jeff Kirsher 
Signed-off-by: Ben Hutchings

ixgbe: fix EICR write in ixgbe_msix_other

2013-05-13T14:02:26+00:00

commit d87d830720a1446403ed38bfc2da268be0d356d1 upstream.

Previously, the ixgbe_msix_other was writing the full 32bits of the set
interrupts, instead of only the ones which the ixgbe_msix_other is
handling. This resulted in a loss of performance when the X540's PPS feature is
enabled due to sometimes clearing queue interrupts which resulted in the driver
not getting the interrupt for cleaning the q_vector rings often enough. The fix
is to simply mask the lower 16bits off so that this handler does not write them
in the EICR, which causes them to remain high and be properly handled by the
clean_rings interrupt routine as normal.

Signed-off-by: Jacob Keller 
Tested-by: Phil Schmitt 
Signed-off-by: Jeff Kirsher 
Signed-off-by: Ben Hutchings

ixgbe: fix registration order of driver and DCA nofitication

2013-04-10T02:20:08+00:00

commit f01fc1a82c2ee68726b400fadb156bd623b5f2f1 upstream.

ixgbe_notify_dca cannot be called before driver registration
because it expects driver's klist_devices to be allocated and
initialized. While on it make sure debugfs files are removed
when registration fails.

Signed-off-by: Jakub Kicinski 
Tested-by: Phil Schmitt 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller 
[bwh: Backported to 3.2: no debugfs support]
Signed-off-by: Ben Hutchings

e1000e: fix pci-device enable-counter balance

2013-03-20T15:03:31+00:00

commit 4e0855dff094b0d56d6b5b271e0ce7851cc1e063 upstream.

This patch removes redundant and unbalanced pci_disable_device() from
__e1000_shutdown(). pci_clear_master() is enough, device can go into
suspended state with elevated enable_cnt.

Bug was introduced in commit 23606cf5d1192c2b17912cb2ef6e62f9b11de133
("e1000e / PCI / PM: Add basic runtime PM support (rev. 4)") in v2.6.35

Cc: Bruce Allan 
Signed-off-by: Konstantin Khlebnikov 
Acked-by: Rafael J. Wysocki 
Tested-by: Borislav Petkov 
Tested-by: Aaron Brown 
Signed-off-by: Jeff Kirsher 
Signed-off-by: Ben Hutchings

igb: Remove artificial restriction on RQDPC stat reading

2013-03-06T03:24:18+00:00

commit ae1c07a6b7ced6c0c94c99e3b53f4e7856fa8bff upstream.

For some reason the reading of the RQDPC register was being artificially
limited to 4K.  Instead of limiting the value we should read the value and
add the full amount.  Otherwise this can lead to a misleading number of
dropped packets when the actual value is in fact much higher.

Signed-off-by: Alexander Duyck 
Tested-by: Jeff Pieper   
Signed-off-by: Jeff Kirsher 
Signed-off-by: Ben Hutchings

igb: release already assigned MSI-X interrupts if setup fails

2013-02-06T04:33:55+00:00

commit 52285b762b3681669215bf1d17ca6143448ab7d3 upstream.

During MSI-X setup the system might run out of vectors. If this happens the
already assigned vectors for this NIC should be freed before trying the
disable MSI-X. Failing to do so results in the following oops.

kernel BUG at drivers/pci/msi.c:341!
[...]
Call Trace:
 [] pci_disable_msix+0x3d/0x60
 [] igb_reset_interrupt_capability+0x27/0x5c [igb]
 [] igb_clear_interrupt_scheme+0x26/0x2d [igb]
 [] igb_request_irq+0x73/0x297 [igb]
 [] __igb_open+0xc8/0x223 [igb]
 [] igb_open+0x13/0x15 [igb]
 [] __dev_open+0xbf/0x120
 [] __dev_change_flags+0xa1/0x180
 [] dev_change_flags+0x28/0x70
 [] devinet_ioctl+0x5b7/0x620
 [] inet_ioctl+0x88/0xa0
 [] sock_do_ioctl+0x30/0x70
 [] sock_ioctl+0x72/0x270
 [] do_vfs_ioctl+0x8c/0x340
 [] sys_ioctl+0xa1/0xb0
 [] system_call_fastpath+0x16/0x1b
Code: 48 89 df e8 1f 40 ed ff 4d 39 e6 49 8b 45 10 75 b6 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f c9 c3 48 8b 7b 20 e8 3e 91 db ff eb ae <0f> 0b eb fe 0f 1f 84 00 00 00 00 00 55 48 89 e5 0f 1f 44 00 00
RIP  [] free_msi_irqs+0x124/0x130
 RSP 

Signed-off-by: Stefan Assmann 
Tested-by: Aaron Brown 
Signed-off-by: Jeff Kirsher 
Signed-off-by: Ben Hutchings

ixgbe: add support for X540-AT1

2012-12-06T11:20:14+00:00

commit df376f0de167754da9b3ece4afdb5bb8bf3fbf3e upstream.

This patch adds device support for Ethernet Controller X540-AT1.

Signed-off-by: Josh Hay 
Tested-by: Phil Schmitt 
Signed-off-by: Jeff Kirsher 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

ixgbe: add support for new 82599 device id

2012-12-06T11:20:14+00:00

commit 9e791e4a04c08868f02cd579a428a7268492e1b4 upstream.

Support for new 82599 based quad port adapter.

Signed-off-by: Emil Tantilov 
Tested-by: Phil Schmitt 
Signed-off-by: Jeff Kirsher 
Signed-off-by: Ben Hutchings