21 Jul, 2012
28 commits
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Add a big comment explaining how the field works, and use defines
instead of magic constants for the values assigned to it.Suggested by Joe Perches.
Signed-off-by: David S. Miller
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In order to allow prefixed routes, we have to adjust how rt_gateway
is set and interpreted.The new interpretation is:
1) rt_gateway == 0, destination is on-link, nexthop is iph->daddr
2) rt_gateway != 0, destination requires a nexthop gateway
Abstract the fetching of the proper nexthop value using a new
inline helper, rt_nexthop(), as suggested by Joe Perches.Signed-off-by: David S. Miller
Tested-by: Vijay Subramanian -
Signed-off-by: David S. Miller
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Signed-off-by: David S. Miller
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Signed-off-by: David S. Miller
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They are always used in contexts where they can be reconstituted,
or where the finally resolved rt->rt_{src,dst} is semantically
equivalent.Signed-off-by: David S. Miller
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The "noref" argument to ip_route_input_common() is now always ignored
because we do not cache routes, and in that case we must always grab
a reference to the resulting 'dst'.Signed-off-by: David S. Miller
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The ipv4 routing cache is non-deterministic, performance wise, and is
subject to reasonably easy to launch denial of service attacks.The routing cache works great for well behaved traffic, and the world
was a much friendlier place when the tradeoffs that led to the routing
cache's design were considered.What it boils down to is that the performance of the routing cache is
a product of the traffic patterns seen by a system rather than being a
product of the contents of the routing tables. The former of which is
controllable by external entitites.Even for "well behaved" legitimate traffic, high volume sites can see
hit rates in the routing cache of only ~%10.Signed-off-by: David S. Miller
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When io access mode is enabled by BOOTROM or BIOS for AR8152 v2.1,
the register can't be read/write by memory access mode.
Clearing Bit 8 of Register 0x21c could fixed the issue.Signed-off-by: Cloud Ren
Cc: stable
Signed-off-by: xiong
Signed-off-by: David S. Miller -
This patch fixes a crash
tun_chr_close -> netdev_run_todo -> tun_free_netdev -> sk_release_kernel ->
sock_release -> iput(SOCK_INODE(sock))
introduced by commit 1ab5ecb90cb6a3df1476e052f76a6e8f6511cb3dThe problem is that this socket is embedded in struct tun_struct, it has
no inode, iput is called on invalid inode, which modifies invalid memory
and optionally causes a crash.sock_release also decrements sockets_in_use, this causes a bug that
"sockets: used" field in /proc/*/net/sockstat keeps on decreasing when
creating and closing tun devices.This patch introduces a flag SOCK_EXTERNALLY_ALLOCATED that instructs
sock_release to not free the inode and not decrement sockets_in_use,
fixing both memory corruption and sockets_in_use underflow.It should be backported to 3.3 an 3.4 stabke.
Signed-off-by: Mikulas Patocka
Cc: stable@kernel.org
Signed-off-by: David S. Miller -
Override the metrics with rt_pmtu
Signed-off-by: Julian Anastasov
Signed-off-by: David S. Miller -
Jerr Kirsher says:
====================
This series contains updates to ixgbe.
...
Alexander Duyck (9):
ixgbe: Use VMDq offset to indicate the default pool
ixgbe: Fix memory leak when SR-IOV VFs are direct assigned
ixgbe: Drop references to deprecated pci_ DMA api and instead use
dma_ API
ixgbe: Cleanup configuration of FCoE registers
ixgbe: Merge all FCoE percpu values into a single structure
ixgbe: Make FCoE allocation and configuration closer to how rings
work
ixgbe: Correctly set SAN MAC RAR pool to default pool of PF
ixgbe: Only enable anti-spoof on VF pools
ixgbe: Enable FCoE FSO and CRC offloads based on CAPABLE instead of
ENABLED flag
====================Signed-off-by: David S. Miller
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Jiri Pirko says:
====================
This patchset represents the way I walked when I was adding multiqueue
support for team driver.Jiri Pirko (6):
net: honour netif_set_real_num_tx_queues() retval
rtnl: allow to specify different num for rx and tx queue count
rtnl: allow to specify number of rx and tx queues on device creation
net: rename bond_queue_mapping to slave_dev_queue_mapping
bond_sysfs: use ream_num_tx_queues rather than params.tx_queue
team: add multiqueue support
====================Signed-off-by: David S. Miller
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Largely copied from bonding code.
Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller -
Since now number of tx queues can be specified during bond instance
creation and therefore it may differ from params.tx_queues, use rather
real_num_tx_queues for boundary check.Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller -
As this is going to be used not only by bonding.
Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller -
This patch introduces IFLA_NUM_TX_QUEUES and IFLA_NUM_RX_QUEUES by
which userspace can set number of rx and/or tx queues to be allocated
for newly created netdevice.
This overrides ops->get_num_[tr]x_queues()Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller -
Also cut out unused function parameters and possible err in return
value.Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller -
In netif_copy_real_num_queues() the return value of
netif_set_real_num_tx_queues() should be checked.Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller -
Modern TCP stack highly depends on tcp_write_timer() having a small
latency, but current implementation doesn't exactly meet the
expectations.When a timer fires but finds the socket is owned by the user, it rearms
itself for an additional delay hoping next run will be more
successful.tcp_write_timer() for example uses a 50ms delay for next try, and it
defeats many attempts to get predictable TCP behavior in term of
latencies.Use the recently introduced tcp_release_cb(), so that the user owning
the socket will call various handlers right before socket release.This will permit us to post a followup patch to address the
tcp_tso_should_defer() syndrome (some deferred packets have to wait
RTO timer to be transmitted, while cwnd should allow us to send them
sooner)Signed-off-by: Eric Dumazet
Cc: Tom Herbert
Cc: Yuchung Cheng
Cc: Neal Cardwell
Cc: Nandita Dukkipati
Cc: H.K. Jerry Chu
Cc: John Heffner
Signed-off-by: David S. Miller -
When/if sysctl_tcp_abc > 1, we expect to increase cwnd by 2 if the
received ACK acknowledges more than 2*MSS bytes, in tcp_slow_start()Problem is this RFC 3465 statement is not correctly coded, as
the while () loop increases snd_cwnd one by one.Add a new variable to avoid this off-by one error.
Signed-off-by: Eric Dumazet
Cc: Tom Herbert
Cc: Yuchung Cheng
Cc: Neal Cardwell
Cc: Nandita Dukkipati
Cc: John Heffner
Cc: Stephen Hemminger
Acked-by: Yuchung Cheng
Acked-by: Neal Cardwell
Signed-off-by: David S. Miller -
Fix a missing roundup_pow_of_two(), since tcpmhash_entries is not
guaranteed to be a power of two.Uses hash_32() instead of custom hash.
tcpmhash_entries should be an unsigned int.
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
Applied to a set of static inline functions in tcp_input.c
Signed-off-by: Vijay Subramanian
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller -
Use PCI_VENDOR_ID_INTEL from pci_ids.h instead of creating its own
vendor ID #define.Signed-off-by: Jon Mason
Cc: Jeff Kirsher
Cc: Jesse Brandeburg
Cc: Bruce Allan
Cc: Carolyn Wyborny
Cc: Don Skidmore
Cc: Greg Rose
Cc: Peter P Waskiewicz Jr
Cc: Alex Duyck
Cc: John Ronciak
Acked-by: Jeff Kirsher
Signed-off-by: David S. Miller -
Use PCI_VENDOR_ID_INTEL from pci_ids.h instead of creating its own
vendor ID #define.Signed-off-by: Jon Mason
Cc: Jeff Kirsher
Cc: Jesse Brandeburg
Cc: Bruce Allan
Cc: Carolyn Wyborny
Cc: Don Skidmore
Cc: Greg Rose
Cc: Peter P Waskiewicz Jr
Cc: Alex Duyck
Cc: John Ronciak
Acked-by: Jeff Kirsher
Signed-off-by: David S. Miller -
Remove myself from myri10ge MAINTAINERS list
Signed-off-by: Jon Mason
Signed-off-by: David S. Miller -
Marc Kleine-Budde says:
====================
the fifth pull request for upcoming v3.6 net-next cleans up and
improves the janz-ican3 driver (6 patches by Ira W. Snyder, one by me).
A patch by Steffen Trumtrar adds imx53 support to the flexcan driver.
And another patch by me, which marks the bit timing constant in the CAN
drivers as "const".
====================Signed-off-by: David S. Miller
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…wireless-next into for-davem
20 Jul, 2012
12 commits
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The Janz VMOD-ICAN3 hardware has support for one shot packet
transmission. This means that a packet will be attempted to be sent
once, with no automatic retries.The SocketCAN core has a controller-wide setting for this mode:
CAN_CTRLMODE_ONE_SHOT. The Janz VMOD-ICAN3 hardware supports this flag
on a per-packet level, but the SocketCAN core does not.Signed-off-by: Ira W. Snyder
Signed-off-by: Marc Kleine-Budde -
If the bus error quota is set to infinite and the host CPU cannot keep
up, the Janz VMOD-ICAN3 firmware will stop responding to control
messages until the controller is reset.The firmware will automatically stop sending bus error messages when the
quota is reached, and will only resume sending bus error messages when
the quota is re-set to a positive value.This limitation is worked around by setting the bus error quota to one
message, and then re-setting the quota to one message every time a bus
error message is received. By doing this, the firmware never stops
responding to control messages. The CAN bus can be reset without a
hard-reset of the controller card.Signed-off-by: Ira W. Snyder
Signed-off-by: Marc Kleine-Budde -
The Janz VMOD-ICAN3 firmware does not support any sort of TX-done
notification or interrupt. The driver previously used the hardware
loopback to attempt to work around this deficiency, but this caused all
sockets to receive all messages, even if CAN_RAW_RECV_OWN_MSGS is off.Using the new function ican3_cmp_echo_skb(), we can drop the loopback
messages and return the original skbs. This fixes the issues with
CAN_RAW_RECV_OWN_MSGS.A private skb queue is used to store the echo skbs. This avoids the need
for any index management.Due to a lack of TX-error interrupts, bus errors are permanently
enabled, and are used as a TX-error notification. This is used to drop
an echo skb when transmission fails. Bus error packets are not generated
if the user has not enabled bus error reporting.Signed-off-by: Ira W. Snyder
Signed-off-by: Marc Kleine-Budde -
The error and byte counter statistics were being incremented
incorrectly. For example, a TX error would be counted both in tx_errors
and rx_errors.This corrects the problem so that tx_errors and rx_errors are only
incremented for errors caused by packets sent to the bus. Error packets
generated by the driver are not counted.The byte counters are only increased for packets which are actually
transmitted or received from the bus. Error packets generated by the
driver are not counted.Signed-off-by: Ira W. Snyder
Signed-off-by: Marc Kleine-Budde -
This patch cleans up the ICAN3 to Linux CAN frame and vice versa
conversion functions:- RX: Use get_can_dlc() to limit the dlc value.
- RX+TX: Don't copy the whole frame, only copy the amount of bytes
specified in cf->can_dlc.Acked-by: Ira W. Snyder
Tested-by: Ira W. Snyder
Signed-off-by: Marc Kleine-Budde -
The commit which added the janz-ican3 driver and commit
3ccd4c61 "can: Unify droping of invalid tx skbs and netdev stats" were
committed into mainline Linux during the same merge window.Therefore, the addition of this code to the janz-ican3 driver was
forgotten. This patch adds the expected code.Signed-off-by: Ira W. Snyder
Signed-off-by: Marc Kleine-Budde -
The code which used this variable was removed during review, before the
driver was added to mainline Linux. It is now dead code, and can be
removed.Signed-off-by: Ira W. Snyder
Signed-off-by: Marc Kleine-Budde -
This patch adds support for a second clock to the flexcan driver. On
modern freescale ARM cores like the imx53 and imx6q two clocks ("ipg"
and "per") must be enabled in order to access the CAN core.In the original driver, the clock was requested without specifying the
connection id, further all mainline ARM archs with flexcan support
(imx28, imx25, imx35) register their flexcan clock without a
connection id, too.This patch first renames the existing clk variable to clk_ipg and
converts it to devm for easier error handling. The connection id "ipg"
is added to the devm_clk_get() call. Then a second clock "per" is
requested. As all archs don't specify a connection id, both clk_get
return the same clock. This ensures compatibility to existing flexcan
support and adds support for imx53 at the same time.After this patch hits mainline, the archs may give their existing
flexcan clock the "ipg" connection id and implement a dummy "per"
clock.This patch has been tested on imx28 (unmodified clk tree) and on imx53
with a seperate "ipg" and "per" clock.Cc: Sascha Hauer
Cc: Shawn Guo
Signed-off-by: Steffen Trumtrar
Acked-by: Hui Wang
Signed-off-by: Marc Kleine-Budde -
This patch marks the bittiming_const pointer as in the struct can_pric as
"const". This allows us to mark the struct can_bittiming_const in the CAN
drivers as "const", too.Signed-off-by: Marc Kleine-Budde
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Instead of only setting the FCOE segmentation offload and CRC offload flags
if we enable FCoE, we could just set them always since there are no
modifications needed to the hardware or adapter FCoE structure in order to
use these features.The advantage to this is that if FCoE enablement fails, for example because
SR-IOV was enabled on 82599, we will still have use of the FCoE
segmentation offload and Tx/Rx CRC offloads which should still help to
improve the FCoE performance.Signed-off-by: Alexander Duyck
Tested-by: Phil Schmitt
Tested-by: Ross Brattain
Signed-off-by: Jeff Kirsher -
The current logic is enabling anti-spoof on all pools and then clearing
anti-spoof on just the first PF pool. The correct approach is to only set
anti-spoof on the VF pools and to leave all of the PF pools unchecked.This allows for items such as FCoE to use adjacent pools within the PF for
transmit and receive queues without the traffic being blocked by this
security feature.Signed-off-by: Alexander Duyck
Tested-by: Phil Schmitt
Tested-by: Sibai Li
Signed-off-by: Jeff Kirsher -
This change corrects an issue in which an FCoE enabled adapter was always
setting the FCoE SAN MAC MPSAR register to 0x1. This results in the first
VF being assigned the SAN MAC address in the case of SR-IOV and as such is
incorrect. To resolve this I am adding a new function that will update the
SAN MAC pool address after reset.Signed-off-by: Alexander Duyck
Tested-by: Phil Schmitt
Tested-by: Ross Brattain
Signed-off-by: Jeff Kirsher
