There are really only 3 modes that can control the number of queues. Those
are RSS, DCB, and VMDq/SR-IOV. Currently we have things much more broken
up than they need to be for how we are configuring the rings. In order to
try and straiten some of this out I am going to start merging similar
functionality into single functions. To start with I am merging the Flow
Director ring configuration into the RSS ring configuration since Flow
Director cannot function with DCB or SR-IOV.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This patch replaces a switch statement for an 82598 workaround with an if
statement that only applies to 82598. In addition I am pulling out several
dead pieces of code and instead of reading the SRRCTL register and then
modifying it we are just writing a value which we generate from scratch.
Finally I am also removing any drop enable related code since that was
moved to a function of its own.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The mask value for ring features was overloaded for FCoE which can lead to
some confusion. In order to avoid any confusion I am splitting the mask
value and adding an offset value. This can be used for the start of the
FCoE rings, and in the future I hope to use it to store the start of the
registers for SR-IOV.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
We are currently using indices to indicate the upper limit on a ring
feature. However since we can switch back and forth on features such as
DCB and that has effects on other features such as RSS it is preferable to
instead store the upper limit separate from the current value for the
number of rings related to the feature.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
It makes much more sense for us to count q_vectors instead of MSI-X
vectors. We were using num_msix_vectors to find the number of q_vectors in
multiple places. This was wasteful since we only had one place that
actually needs the number of MSI-X vectors and that is in slow path.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
commit 6d29b1ef introduces a bug, ntohs is __be16_to_cpu,
not cpu_to_be16.
We always use htons on IP_OFFSET and IP_MF, then compare
with network package.
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ETH_P_IP is host Endian, skb->protocol is big Endian, when
compare them, Using htons on skb->protocol is wrong.
And fix two code style issues: indentation and remove
unnecessary parentheses.
CC: Tristram Ha <Tristram.Ha@micrel.com>
CC: Ben Hutchings <bhutchings@solarflare.com>
CC: Joe Perches <joe@perches.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Conflicts:
net/batman-adv/bridge_loop_avoidance.c
net/batman-adv/bridge_loop_avoidance.h
net/batman-adv/soft-interface.c
net/mac80211/mlme.c
With merge help from Antonio Quartulli (batman-adv) and
Stephen Rothwell (drivers/net/usb/qmi_wwan.c).
The net/mac80211/mlme.c conflict seemed easy enough, accounting for a
conversion to some new tracing macros.
Signed-off-by: David S. Miller <davem@davemloft.net>
In rare cases, bnx2x_free_tx_skbs() can unmap the wrong DMA address
when it gets to the last entry of the tx ring. We were not using
the proper macro to skip the last entry when advancing the tx index.
Reported-by: Zongyun Lai <zlai@vmware.com>
Reviewed-by: Jeffrey Huang <huangjw@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Or Gerlitz reported triggering of WARN_ON_ONCE(delta < len); in
skb_try_coalesce()
This warning tracks drivers that incorrectly set skb->truesize
IPoIB indeed allocates a full page to store a fragment, but only
accounts in skb->truesize the used part of the page (frame length)
This patch fixes skb truesize underestimation, and
also fixes a performance issue, because RX skbs have not enough tailroom
to allow IP and TCP stacks to pull their header in skb linear part
without an expensive call to pskb_expand_head()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Erez Shitrit <erezsh@mellanox.com>
Cc: Shlomo Pongartz <shlomop@mellanox.com>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Missing case was causing ethtool self test to print garbage
value in extra info section.
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
TX queue was being stopped at beginning of send path instead
of at the end when last descriptor is used.
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enabling RX cut-thru mode yields better performance as received frames
start getting written to memory before a whole frame is received.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Increase the number of outstanding read and write AXI transactions from 1
to 8 for better performance.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix intermittent hangs in xgmac_rx_refill. If a ring buffer entry already
had an skb allocated, then xgmac_rx_refill would get stuck in a loop. This
can happen on a rx error when we just leave the skb allocated to the entry.
[ 7884.510000] INFO: rcu_preempt detected stall on CPU 0 (t=727315 jiffies)
[ 7884.510000] [<c0010a59>] (unwind_backtrace+0x1/0x98) from [<c006fd93>] (__rcu_pending+0x11b/0x2c4)
[ 7884.510000] [<c006fd93>] (__rcu_pending+0x11b/0x2c4) from [<c0070b95>] (rcu_check_callbacks+0xed/0x1a8)
[ 7884.510000] [<c0070b95>] (rcu_check_callbacks+0xed/0x1a8) from [<c0036abb>] (update_process_times+0x2b/0x48)
[ 7884.510000] [<c0036abb>] (update_process_times+0x2b/0x48) from [<c004e8fd>] (tick_sched_timer+0x51/0x94)
[ 7884.510000] [<c004e8fd>] (tick_sched_timer+0x51/0x94) from [<c0045527>] (__run_hrtimer+0x4f/0x1e8)
[ 7884.510000] [<c0045527>] (__run_hrtimer+0x4f/0x1e8) from [<c0046003>] (hrtimer_interrupt+0xd7/0x1e4)
[ 7884.510000] [<c0046003>] (hrtimer_interrupt+0xd7/0x1e4) from [<c00101d3>] (twd_handler+0x17/0x24)
[ 7884.510000] [<c00101d3>] (twd_handler+0x17/0x24) from [<c006be39>] (handle_percpu_devid_irq+0x59/0x114)
[ 7884.510000] [<c006be39>] (handle_percpu_devid_irq+0x59/0x114) from [<c0069aab>] (generic_handle_irq+0x17/0x2c)
[ 7884.510000] [<c0069aab>] (generic_handle_irq+0x17/0x2c) from [<c000cc8d>] (handle_IRQ+0x35/0x7c)
[ 7884.510000] [<c000cc8d>] (handle_IRQ+0x35/0x7c) from [<c033b153>] (__irq_svc+0x33/0xb8)
[ 7884.510000] [<c033b153>] (__irq_svc+0x33/0xb8) from [<c0244b06>] (xgmac_rx_refill+0x3a/0x140)
[ 7884.510000] [<c0244b06>] (xgmac_rx_refill+0x3a/0x140) from [<c02458ed>] (xgmac_poll+0x265/0x3bc)
[ 7884.510000] [<c02458ed>] (xgmac_poll+0x265/0x3bc) from [<c029fcbf>] (net_rx_action+0xc3/0x200)
[ 7884.510000] [<c029fcbf>] (net_rx_action+0xc3/0x200) from [<c0030cab>] (__do_softirq+0xa3/0x1bc)
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix net tx watchdog timeout recovery. The descriptor ring was reset,
but the DMA engine was not reset to the beginning of the ring.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set by the driver on packet recieve.
eth_type_trans already sets skb->dev to the proper value and it is not
referenced anywhere else in the dirver, thus making its setting unnecessary.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set during ring init and skb alloc in rx. It is
already being set to the proper value when eth_type_trans is called on packet
receive, and the skb->dev is not referenced anywhere else in the code.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set by the driver's skb alloc routine (which is
called in init and during rx). It is already being set to the proper value when
eth_type_trans is called on packet receive, and the skb->dev is not referenced
anywhere else in the code.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set during ring init and skb alloc in rx. It is
already being set to the proper value when eth_type_trans is called on packet
receive, and the skb->dev is not referenced anywhere else in the code.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set by the driver on packet recieve.
eth_type_trans already sets skb->dev to the proper value and it is not
referenced anywhere else in the dirver, thus making its setting unnecessary.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Cc: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Cc: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Cc: Ron Mercer <ron.mercer@qlogic.com>
Cc: linux-driver@qlogic.com
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set before calling eth_type_trans.
eth_type_trans already sets skb->dev to the proper value, thus making this
unnecessary.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Cc: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Cc: Sony Chacko <sony.chacko@qlogic.com>
Cc: linux-driver@qlogic.com
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set during ring init. It is already being set
to the proper value when eth_type_trans is called on packet receive, and the
skb->dev is not referenced anywhere else in the code.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set before calling eth_type_trans.
eth_type_trans already sets skb->dev to the proper value, thus making this
unnecessary.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set by the driver on packet recieve.
eth_type_trans already sets skb->dev to the proper value and it is not
referenced anywhere else in the dirver, thus making its setting unnecessary.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Cc: Sony Chacko <sony.chacko@qlogic.com>
Cc: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set after calling eth_type_trans.
eth_type_trans already sets skb->dev to the proper value, thus making this
unnecessary.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Cc: Christian Benvenuti <benve@cisco.com>
Cc: Roopa Prabhu <roprabhu@cisco.com>
Cc: Neel Patel <neepatel@cisco.com>
Cc: Nishank Trivedi <nistrive@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->dev is being unnecessarily set during ring init. It is already being set
to the proper value when eth_type_trans is called on packet receive, and the
skb->dev is not referenced anywhere else in the code.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
URLs to neterion.com and s2io.com no longer resolve. Remove all references to
these URLs in the driver source and documentation.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Convert doxygen (or similar) formatted comments to kernel-doc or
unformatted comment. Delete a few that are content-free.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix incorrect start markers, wrapped summary lines, missing section
breaks, incorrect separators, and some name mismatches. Delete
a few that are content-free.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Defining a function with no parameters as 'T foo()' is the deprecated
K&R style, and is not strictly equivalent to defining it as 'T foo(void)'.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Francois Romieu (4):
r8169: mdio_ops signature change.
r8169: csi_ops signature change.
r8169: ephy, eri and efuse functions signature changes.
r8169: abstract out loop conditions.
Hayes Wang (2):
r8169: add RTL8106E support.
r8169: support RTL8168G
Signed-off-by: David S. Miller <davem@davemloft.net>
commit db83d136d7 (gianfar: Fix missing sock reference when
processing TX time stamps) added a potential sk_wmem_alloc imbalance
If the new skb has a different truesize than old one, we can get a
negative sk_wmem_alloc once new skb is orphaned at TX completion.
Now we no longer early orphan skbs in dev_hard_start_xmit(), this
probably can lead to fatal bugs.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Manfred Rudigier <manfred.rudigier@omicron.at>
Cc: Claudiu Manoil <claudiu.manoil@freescale.com>
Cc: Jiajun Wu <b06378@freescale.com>
Cc: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If list_for_each_entry, etc complete a traversal of the list, the iterator
variable ends up pointing to an address at an offset from the list head,
and not a meaningful structure. Thus this value should not be used after
the end of the iterator. There does not seem to be a meaningful value to
provide to netdev_warn. Replace with pr_warn, since pr_err is used
elsewhere.
This problem was found using Coccinelle (http://coccinelle.lip6.fr/).
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
If list_for_each_entry, etc complete a traversal of the list, the iterator
variable ends up pointing to an address at an offset from the list head,
and not a meaningful structure. Thus this value should not be used after
the end of the iterator. The dereferences are just deleted from the
debugging statement.
This problem was found using Coccinelle (http://coccinelle.lip6.fr/).
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Macro spin_event_timeout() was designed for simple polling of hardware
registers with a timeout, so use it when we poll the MIIMIND register.
This allows us to return an error code instead of polling indefinitely.
Note that PHY_INIT_TIMEOUT is a count of loop iterations, so we can't use
it for spin_event_timeout(), which asks for microseconds.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The bonding debugfs support has been broken in the presence of network
namespaces since it has been added. The debugfs support does not handle
multiple bonding devices with the same name in different network
namespaces.
I haven't had any bug reports, and I'm not interested in getting any.
Disable the debugfs support when network namespaces are enabled.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It was recently reported that moving a bonding device between network
namespaces causes warnings from /proc. It turns out after the move we
were trying to add and to remove the /proc/net/bonding entries from the
wrong network namespace.
Move the bonding /proc registration code into the NETDEV_REGISTER and
NETDEV_UNREGISTER events where the proc registration and unregistration
will always happen at the right time.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Inspired by implementation in smsc911x.c and smsc9420.c
Tested on ARM/pandaboard running android
Signed-off-by: Emeric Vigier <emeric.vigier@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
as the manual of module_pci_driver says that
it can be used when the init and exit functions of
the module does nothing but the pci_register_driver
and pci_unregister_driver.
use it for rdc's r6040 driver, as the init and exit
paths does as above, and also this reduces a little
amount of code.
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
l4_rxhash is set on skb when rxhash is obtained from canonical 4-tuple
over transport ports/addresses.
We can set skb->l4_rxhash for all incoming TCP packets on bnx2x for
free, as cqe status contains a hash type information.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
