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Daniel Borkmann [Thu, 27 Jun 2013 11:44:26 +0000 (13:44 +0200)]
nlmon: fix comparison in nlmon_is_valid_mtu
This patch fixes the following warning introduced in
e4fc408e0e99
("packet: nlmon: virtual netlink monitoring device for packet
sockets") reported by Dan Carpenter:
warning: "drivers/net/nlmon.c:31 nlmon_is_valid_mtu()
warn: always true condition '(new_mtu <= ((~0 >> 1))) =>
(s32min-s32max <= s32max)'"
Thus, we should simply remove the test against INT_MAX. Next to that
we also need to explicitly cast the sizeof() case as the comparison
is type promoted to unsigned long so negative values are then
valid instead of invalid. While at it, this also adds a comment about
Netlink and MTUs.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Mack [Thu, 27 Jun 2013 09:40:47 +0000 (11:40 +0200)]
drivers: net: cpsw: add newline after MACID log
Cosmetic patch to add a newline after logging the device's MACID.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Fri, 28 Jun 2013 11:02:54 +0000 (14:02 +0300)]
pch_gbe: use managed functions pcim_* and devm_*
This makes the error handling much more simpler than open-coding everything and
in addition makes the probe function smaller an tidier.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Fri, 28 Jun 2013 11:02:53 +0000 (14:02 +0300)]
pch_gbe: convert pr_* to netdev_*
We may use nice macros to prefix our messages with proper device name.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Fri, 28 Jun 2013 11:02:52 +0000 (14:02 +0300)]
pch_gbe: remove inline keyword for exported functions
There is no much sense to mark functions inline that are going to be used in
the other compile modules.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Chang [Thu, 27 Jun 2013 09:16:43 +0000 (17:16 +0800)]
usbnet: ax88179_178a: add .reset_resume hook
I tested with the AX88179 usb dongle, if without .reset_resume hook,
after S3/S4 resume you have to enable network interface or reload the
dirver module manually otherwise the network interface can not work.
Signed-off-by: David Chang <dchang@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Chang [Thu, 27 Jun 2013 09:16:42 +0000 (17:16 +0800)]
usbnet: ax88179_178a: Correct a typo in description
Correct a typo in description of driver_info, it should be Gigabit
Signed-off-by: David Chang <dchang@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timo Teräs [Thu, 27 Jun 2013 07:27:05 +0000 (10:27 +0300)]
ipv4: use next hop exceptions also for input routes
Commit
d2d68ba9 (ipv4: Cache input routes in fib_info nexthops)
assmued that "locally destined, and routed packets, never trigger
PMTU events or redirects that will be processed by us".
However, it seems that tunnel devices do trigger PMTU events in certain
cases. At least ip_gre, ip6_gre, sit, and ipip do use the inner flow's
skb_dst(skb)->ops->update_pmtu to propage mtu information from the
outer flows. These can cause the inner flow mtu to be decreased. If
next hop exceptions are not consulted for pmtu, IP fragmentation will
not be done properly for these routes.
It also seems that we really need to have the PMTU information always
for netfilter TCPMSS clamp-to-pmtu feature to work properly.
So for the time being, cache separate copies of input routes for
each next hop exception.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Reviewed-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Wed, 26 Jun 2013 22:07:01 +0000 (00:07 +0200)]
ipv6: resend MLD report if a link-local address completes DAD
RFC3590/RFC3810 specifies we should resend MLD reports as soon as a
valid link-local address is available.
We now use the valid_ll_addr_cnt to check if it is necessary to resend
a new report.
Changes since Flavio Leitner's version:
a) adapt for valid_ll_addr_cnt
b) resend first reports directly in the path and just arm the timer for
mc_qrv-1 resends.
Reported-by: Flavio Leitner <fleitner@redhat.com>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: David Stevens <dlstevens@us.ibm.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Wed, 26 Jun 2013 22:06:56 +0000 (00:06 +0200)]
ipv6: introduce per-interface counter for dad-completed ipv6 addresses
To reduce the number of unnecessary router solicitations, MLDv2 and IGMPv3
messages we need to track the number of valid (as in non-optimistic,
no-dad-failed and non-tentative) link-local addresses. Therefore, this
patch implements a valid_ll_addr_cnt in struct inet6_dev.
We now only emit router solicitations if the first link-local address
finishes duplicate address detection.
The changes for MLDv2 and IGMPv3 are in a follow-up patch.
While there, also simplify one if statement(one minor nit I made in one
of my previous patches):
if (!...)
do();
else
return;
<<into>>
if (...)
return;
do();
Cc: Flavio Leitner <fbl@redhat.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Cc: David Stevens <dlstevens@us.ibm.com>
Suggested-by: David Stevens <dlstevens@us.ibm.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
nikolay@redhat.com [Wed, 26 Jun 2013 15:13:39 +0000 (17:13 +0200)]
bonding: when cloning a MAC use NET_ADDR_STOLEN
A simple semantic change, when a slave's MAC is cloned by the bond
master then set addr_assign_type to NET_ADDR_STOLEN instead of
NET_ADDR_SET. Also use bond_set_dev_addr() in BOND_FOM_ACTIVE mode
to change the bond's MAC address because the assign_type has to be
set properly.
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
nikolay@redhat.com [Wed, 26 Jun 2013 15:13:38 +0000 (17:13 +0200)]
bonding: remove unnecessary dev_addr_from_first member
In struct bonding there's a member called dev_addr_from_first which is
used to denote when the bond dev should clone the first slave's MAC
address but since we have netdev's addr_assign_type variable that is not
necessary. We clone the first slave's MAC each time we have a random MAC
set to the bond device. This has the nice side-effect of also fixing an
inconsistency - when the MAC address of the bond dev is set after its
creation, but prior to having slaves, it's not kept and the first slave's
MAC is cloned. The only way to keep the MAC was to create the bond device
with the MAC address set (e.g. through ip link). In all cases if the
bond device is left without any slaves - its MAC gets reset to a random
one as before.
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
nikolay@redhat.com [Wed, 26 Jun 2013 15:13:37 +0000 (17:13 +0200)]
bonding: remove unnecessary setup_by_slave member
We have a member called setup_by_slave in struct bonding to denote if the
bond dev has different type than ARPHRD_ETHER, but that is already denoted
in bond's netdev type variable if it was setup by the slave, so use that
instead of the member.
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira [Fri, 28 Jun 2013 01:04:23 +0000 (03:04 +0200)]
netlink: fix splat in skb_clone with large messages
Since (
c05cdb1 netlink: allow large data transfers from user-space),
netlink splats if it invokes skb_clone on large netlink skbs since:
* skb_shared_info was not correctly initialized.
* skb->destructor is not set in the cloned skb.
This was spotted by trinity:
[ 894.990671] BUG: unable to handle kernel paging request at
ffffc9000047b001
[ 894.991034] IP: [<
ffffffff81a212c4>] skb_clone+0x24/0xc0
[...]
[ 894.991034] Call Trace:
[ 894.991034] [<
ffffffff81ad299a>] nl_fib_input+0x6a/0x240
[ 894.991034] [<
ffffffff81c3b7e6>] ? _raw_read_unlock+0x26/0x40
[ 894.991034] [<
ffffffff81a5f189>] netlink_unicast+0x169/0x1e0
[ 894.991034] [<
ffffffff81a601e1>] netlink_sendmsg+0x251/0x3d0
Fix it by:
1) introducing a new netlink_skb_clone function that is used in nl_fib_input,
that sets our special skb->destructor in the cloned skb. Moreover, handle
the release of the large cloned skb head area in the destructor path.
2) not allowing large skbuffs in the netlink broadcast path. I cannot find
any reasonable use of the large data transfer using netlink in that path,
moreover this helps to skip extra skb_clone handling.
I found two more netlink clients that are cloning the skbs, but they are
not in the sendmsg path. Therefore, the sole client cloning that I found
seems to be the fib frontend.
Thanks to Eric Dumazet for helping to address this issue.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Dichtel [Wed, 26 Jun 2013 14:11:28 +0000 (16:11 +0200)]
sit: add support of x-netns
This patch allows to switch the netns when packet is encapsulated or
decapsulated. In other word, the encapsulated packet is received in a netns,
where the lookup is done to find the tunnel. Once the tunnel is found, the
packet is decapsulated and injecting into the corresponding interface which
stands to another netns.
When one of the two netns is removed, the tunnel is destroyed.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Dichtel [Wed, 26 Jun 2013 14:11:27 +0000 (16:11 +0200)]
dev: introduce skb_scrub_packet()
The goal of this new function is to perform all needed cleanup before sending
an skb into another netns.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chris Healy [Wed, 26 Jun 2013 06:18:52 +0000 (23:18 -0700)]
fec: Add support for reading RMON registers
Add ethtool operation to read RMON registers.
Tested against net-next on i.MX28.
v2: make conditional on #ifndef CONFIG_M5272
Signed-off-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Wed, 26 Jun 2013 01:41:49 +0000 (03:41 +0200)]
ipv6: rearm router solicitaion timer when setting new tokenized address
When a new tokenized address gets installed we send out just one
router solicition. We should send out `rtr_solicits' in case one router
advertisment got lost.
So, rearm the timer as we do in addrconf_dad_complete.
Cc: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Dichtel [Wed, 26 Jun 2013 15:40:33 +0000 (17:40 +0200)]
sit: fix 4in4 + IPsec scenario
Since commit
32b8a8e59c9c "sit: add IPv4 over IPv4 support",
tunnel->parms.iph.protocol is 0 when both 4in4 and 6in4 are setup, but
xfrm_lookup() is called only when proto is != 0, thus we need to pass the real
value.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 26 Jun 2013 20:23:13 +0000 (13:23 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:
====================
Just one patch this time.
1) Drop packets when the matching SA is in larval state and add a
statistic counter for that. From Fan Du.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexey Brodkin [Wed, 26 Jun 2013 07:49:26 +0000 (11:49 +0400)]
arc_emac: fix compile-time errors & warnings on PPC64
As reported by "kbuild test robot" there were some errors and warnings
on attempt to build kernel with "make ARCH=powerpc allmodconfig".
And this patch addresses both errors and warnings.
Below is a list of introduced changes:
1. Fix compile-time errors (misspellings in "dma_unmap_single") on PPC.
2. Use DMA address instead of "skb->data" as a pointer to data buffer.
This fixed warnings on pointer to int conversion on 64-bit systems.
3. Re-implemented initial allocation of Rx buffers in "arc_emac_open" in
the same way they're re-allocated during operation (receiving packets).
So once again DMA address could be used instead of "skb->data".
4. Explicitly use EMAC_BUFFER_SIZE for Rx buffers allocation.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: netdev@vger.kernel.org
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Francois Romieu <romieu@fr.zoreil.com>
Cc: Joe Perches <joe@perches.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Mischa Jonker <mjonker@synopsys.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: linux-kernel@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Florian Fainelli <florian@openwrt.org>
Cc: David Laight <david.laight@aculab.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Veaceslav Falico [Mon, 24 Jun 2013 09:49:34 +0000 (11:49 +0200)]
bonding: add an option to fail when any of arp_ip_target is inaccessible
Currently, we fail only when all of the ips in arp_ip_target are gone.
However, in some situations we might need to fail if even one host from
arp_ip_target becomes unavailable.
All situations, obviously, rely on the idea that we need *completely*
functional network, with all interfaces/addresses working correctly.
One real world example might be:
vlans on top on bond (hybrid port). If bond and vlans have ips assigned
and we have their peers monitored via arp_ip_target - in case of switch
misconfiguration (trunk/access port), slave driver malfunction or
tagged/untagged traffic dropped on the way - we will be able to switch
to another slave.
Though any other configuration needs that if we need to have access to all
arp_ip_targets.
This patch adds this possibility by adding a new parameter -
arp_all_targets (both as a module parameter and as a sysfs knob). It can be
set to:
0 or any (the default) - which works exactly as it's working now -
the slave is up if any of the arp_ip_targets are up.
1 or all - the slave is up if all of the arp_ip_targets are up.
This parameter can be changed on the fly (via sysfs), and requires the mode
to be active-backup and arp_validate to be enabled (it obeys the
arp_validate config on which slaves to validate).
Internally it's done through:
1) Add target_last_arp_rx[BOND_MAX_ARP_TARGETS] array to slave struct. It's
an array of jiffies, meaning that slave->target_last_arp_rx[i] is the
last time we've received arp from bond->params.arp_targets[i] on this
slave.
2) If we successfully validate an arp from bond->params.arp_targets[i] in
bond_validate_arp() - update the slave->target_last_arp_rx[i] with the
current jiffies value.
3) When getting slave's last_rx via slave_last_rx(), we return the oldest
time when we've received an arp from any address in
bond->params.arp_targets[].
If the value of arp_all_targets == 0 - we still work the same way as
before.
Also, update the documentation to reflect the new parameter.
v3->v4:
Kill the forgotten rtnl_unlock(), rephrase the documentation part to be
more clear, don't fail setting arp_all_targets if arp_validate is not set -
it has no effect anyway but can be easier to set up. Also, print a warning
if the last arp_ip_target is removed while the arp_interval is on, but not
the arp_validate.
v2->v3:
Use _bh spinlock, remove useless rtnl_lock() and use jiffies for new
arp_ip_target last arp, instead of slave_last_rx(). On bond_enslave(),
use the same initialization value for target_last_arp_rx[] as is used
for the default last_arp_rx, to avoid useless interface flaps.
Also, instead of failing to remove the last arp_ip_target just print a
warning - otherwise it might break existing scripts.
v1->v2:
Correctly handle adding/removing hosts in arp_ip_target - we need to
shift/initialize all slave's target_last_arp_rx. Also, don't fail module
loading on arp_all_targets misconfiguration, just disable it, and some
minor style fixes.
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Veaceslav Falico [Mon, 24 Jun 2013 09:49:33 +0000 (11:49 +0200)]
bonding: doc: some details on backup slave arp validation
Add some details to bonding documentation on how backup slave arp
validation works.
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Veaceslav Falico [Mon, 24 Jun 2013 09:49:32 +0000 (11:49 +0200)]
bonding: don't trust arp requests unless active slave really works
Currently, if we receive any arp packet on a backup slave in active-backup
mode and arp_validate enabled, we suppose that it's an arp request, swap
source/target ip and try to validate it. This optimization gives us
virtually no downtime in the most common situation (active and backup
slaves are in the same broadcast domain and the active slave failed).
However, if we can't reach the arp_ip_target(s), we end up in an endless
loop of reselecting slaves, because we receive our arp requests, sent by
the active slave, and think that backup slaves are up, thus selecting them
as active and, again, sending arp requests, which fool our backup slaves.
Fix this by not validating the swapped arp packets if the current active
slave didn't receive any arp reply after it was selected as active. This
way we will only accept arp requests if we know that the current active
slave can actually reach arp_ip_target.
v3->v4:
Obey 80 lines and make checkpatch.pl happy, per Sergei's suggestion.
v1->v3:
No change.
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Veaceslav Falico [Mon, 24 Jun 2013 09:49:31 +0000 (11:49 +0200)]
bonding: don't validate arp if we don't have to
Currently, we validate all the incoming arps if arp_validate not 0.
However, we don't have to validate backup slaves if arp_validate == active
and vice versa, so return early in bond_arp_rcv() in these cases.
It works correctly now because we verify arp_validate in slave_last_rx(),
however we're just doing useless work in bond_arp_rcv().
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Veaceslav Falico [Mon, 24 Jun 2013 09:49:30 +0000 (11:49 +0200)]
bonding: don't add duplicate targets to arp_ip_target
Print a warning and skip them.
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Veaceslav Falico [Mon, 24 Jun 2013 09:49:29 +0000 (11:49 +0200)]
bonding: add helper function bond_get_targets_ip(targets, ip)
Add function bond_get_targets_ip(targets, ip) which searches through
targets array of ips (arp_targets) and returns the position of first
match. If ip == 0, returns the first free slot. On failure to find the
ip or free slot, return -1.
Use it to verify if the arp we've received is valid and in sysfs.
v1->v2:
Fix "[2/6] bonding: add helper function bond_get_targets_ip(targets, ip)",
per Nikolay's advice, to verify if source ip != 0.0.0.0, otherwise we might
update 'null' arp_ip_targets' last_rx. Also, address style.
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Lad, Prabhakar [Tue, 25 Jun 2013 15:54:53 +0000 (21:24 +0530)]
net: davinci_mdio: gaurd the DT code with IS_ENABLED(CONFIG_OF)
guard the davinci_mdio_of_mtable table and davinci_mdio_probe_dt()
with CONFIG_OF.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Lad, Prabhakar [Tue, 25 Jun 2013 15:54:52 +0000 (21:24 +0530)]
net: davinci_emac: simplify the OF parser code
This patch cleans up the OF parser code, removes unnecessary checks
on of_property_read_*() and guards davinci_emac_of_match table with
CONFIG_OF.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Lad, Prabhakar [Tue, 25 Jun 2013 15:54:51 +0000 (21:24 +0530)]
net: davinci: emac: Convert to devm_* api
Use devm_ioremap_resource instead of devm_request_mem_region()/devm_ioremap()
and devm_request_irq() instead of request_irq().
This ensures more consistent error values and simplifies error paths.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Mon, 24 Jun 2013 11:46:54 +0000 (19:46 +0800)]
doc: fix some syntax errors in netlink mmap sample code
Cc: Patrick McHardy <kaber@trash.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Tue, 25 Jun 2013 20:04:22 +0000 (16:04 -0400)]
macvtap: Perform GSO on forwarding path.
When macvtap forwards skb to its tap, it needs to check
if GSO needs to be performed. This is sometimes necessary
when the HW device performed GRO, but the guest reading
from the tap does not support it (ex: Windows 7).
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Tue, 25 Jun 2013 20:04:21 +0000 (16:04 -0400)]
macvtap: Let TUNSETOFFLOAD actually controll offload features.
When the user issues TUNSETOFFLOAD ioctl, macvtap does not do
anything other then to verify arguments. This patch adds
functionality to allow users to actually control offload features.
NETIF_F_GSO and NETIF_F_GRO are always on, but the rest of the
features can be controlled.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Tue, 25 Jun 2013 20:04:20 +0000 (16:04 -0400)]
macvtap: Consistently use rcu functions
Currently macvtap uses rcu_bh functions in its
user facing fuction macvtap_get_user() and macvtap_put_user().
However, its packet handlers use normal rcu as the rcu_read_lock()
is taken in netif_receive_skb(). We can safely discontinue
the usage or rcu with bh disabled.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Tue, 25 Jun 2013 20:04:19 +0000 (16:04 -0400)]
macvtap: Convert to using rtnl lock
Macvtap uses a private lock to protect the relationship between
macvtap_queue and macvlan_dev. The private lock is not needed
since the relationship is managed by user via open(), release(),
and dellink() calls. dellink() already happens under rtnl, so
we can safely convert open() and release(), and use it in ioctl()
as well.
Suggested by Eric Dumazet.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eliezer Tamir [Mon, 24 Jun 2013 07:28:03 +0000 (10:28 +0300)]
net: poll/select low latency socket support
select/poll busy-poll support.
Split sysctl value into two separate ones, one for read and one for poll.
updated Documentation/sysctl/net.txt
Add a new poll flag POLL_LL. When this flag is set, sock_poll will call
sk_poll_ll if possible. sock_poll sets this flag in its return value
to indicate to select/poll when a socket that can busy poll is found.
When poll/select have nothing to report, call the low-level
sock_poll again until we are out of time or we find something.
Once the system call finds something, it stops setting POLL_LL, so it can
return the result to the user ASAP.
Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexey Brodkin [Mon, 24 Jun 2013 05:54:27 +0000 (09:54 +0400)]
ethernet/arc/arc_emac - Add new driver
Driver for non-standard on-chip ethernet device ARC EMAC 10/100,
instantiated in some legacy ARC (Synopsys) FPGA Boards such as
ARCAngel4/ML50x.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Francois Romieu <romieu@fr.zoreil.com>
Cc: Joe Perches <joe@perches.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Mischa Jonker <mjonker@synopsys.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-kernel@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Florian Fainelli <florian@openwrt.org>
Cc: David Laight <david.laight@aculab.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 25 Jun 2013 16:17:30 +0000 (18:17 +0200)]
net: sctp: simplify sctp_get_port
No need to have an extra ret variable when we directly can return
the value of sctp_get_port_local().
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 25 Jun 2013 16:17:29 +0000 (18:17 +0200)]
net: sctp: decouple cleaning some socket data from endpoint
Rather instead of having the endpoint clean the garbage from the
socket, use a sk_destruct handler sctp_destruct_sock(), that does
the job for that when there are no more references on the socket.
At least do this for our crypto transform through crypto_free_hash()
that is allocated when in listening state.
Also, perform sctp_put_port() only when sk is valid. At a later
point in time we can still determine if there's an option of
placing this into sk_prot->unhash() or sctp_endpoint_free() without
any races. For now, leave it in sctp_endpoint_destroy() though.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 25 Jun 2013 16:17:28 +0000 (18:17 +0200)]
net: sctp: minor: sctp_seq_dump_local_addrs add missing newline
A trailing newline has been forgotten to add into the WARN().
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 25 Jun 2013 16:17:27 +0000 (18:17 +0200)]
net: sctp: migrate cookie life from timeval to ktime
Currently, SCTP code defines its own timeval functions (since timeval
is rarely used inside the kernel by others), namely tv_lt() and
TIMEVAL_ADD() macros, that operate on SCTP cookie expiration.
We might as well remove all those, and operate directly on ktime
structures for a couple of reasons: ktime is available on all archs;
complexity of ktime calculations depending on the arch is less than
(reduces to a simple arithmetic operations on archs with
BITS_PER_LONG == 64 or CONFIG_KTIME_SCALAR) or equal to timeval
functions (other archs); code becomes more readable; macros can be
thrown out.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 25 Jun 2013 16:17:26 +0000 (18:17 +0200)]
ktime: add ms_to_ktime() and ktime_add_ms() helpers
Add two ktime helper functions that i) convert a given msec value to
a ktime structure and ii) that adds a msec value to a ktime structure.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 25 Jun 2013 16:17:25 +0000 (18:17 +0200)]
net: sctp: remove TEST_FRAME ifdef
We do neither ship a test_frame.h, nor will this be compatible with
the 2.5 out-of-tree lksctp kernel test suite anyway. So remove this
artefact.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jack Morgenstein [Tue, 25 Jun 2013 09:09:38 +0000 (12:09 +0300)]
net/mlx4_core: Fail device init if num_vfs is negative
Should not allow negative num_vfs
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.com>
Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dotan Barak [Tue, 25 Jun 2013 09:09:37 +0000 (12:09 +0300)]
net/mlx4_core: Add warning in case of command timeouts
Warning prints when there are command timeout to help debugging future
failures.
Signed-off-by: Dotan Barak <dotanb@dev.mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dotan Barak [Tue, 25 Jun 2013 09:09:36 +0000 (12:09 +0300)]
net/mlx4_core: Replace sscanf() with kstrtoint()
It is not safe to use sscanf.
Signed-off-by: Dotan Barak <dotanb@dev.mellanox.com>
Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dotan Barak [Tue, 25 Jun 2013 09:09:35 +0000 (12:09 +0300)]
net/mlx4_en: Remove an unnecessary test
Since this variable is now part of a structure and not allocated dynamically,
this test is irrelevant now.
Signed-off-by: Dotan Barak <dotanb@dev.mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yevgeny Petrilin [Tue, 25 Jun 2013 09:09:34 +0000 (12:09 +0300)]
net/mlx4_en: Add prints when TX timeout occurs
Print a warning when a TX timeout is detected
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eugenia Emantayev [Tue, 25 Jun 2013 09:09:33 +0000 (12:09 +0300)]
net/mlx4_en: Fix a race between napi poll function and RX ring cleanup
The RX rings were cleaned while there was still possible RX traffic completion
handling.
Change the sequance of events so that the port is closed and the QPs are being
stopped before RX cleanup.
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eugenia Emantayev [Tue, 25 Jun 2013 09:09:32 +0000 (12:09 +0300)]
net/mlx4_en: Change log level from error to debug for vlan related messages
The port vlan table size is 126 (used for IBoE) so after 126 we will
not have space and the user need to see it only in debug print and not
error.
Signed-off-by: Aviad Yehezkel <aviadye@mellanox.com>
Reviewed-by: Yevgeny Petrilin <yevgenyp@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eugenia Emantayev [Tue, 25 Jun 2013 09:09:31 +0000 (12:09 +0300)]
net/mlx4_en: Move register_netdev() to the end of initialization function
To avoid a race between the open function and everything that happens after
register_netdev() move it to be the last operation called.
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jack Morgenstein [Tue, 25 Jun 2013 09:09:30 +0000 (12:09 +0300)]
net/mlx4_en: Do not query stats when device port is down
There are no counters allocated to the eth device when the port is down, so
this query is meaningless at that time.
It also leads to querying incorrect counters (since the counter_index is not
valid when the device port is down).
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dotan Barak [Tue, 25 Jun 2013 09:09:29 +0000 (12:09 +0300)]
net/mlx4_en: Fix resource leak in error flow
Wrong condition was used when calling iounmap.
Signed-off-by: Dotan Barak <dotanb@dev.mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Mon, 24 Jun 2013 20:03:28 +0000 (22:03 +0200)]
ipv6: remove old token ipv6 address as soon as possible
If the tokenized ip address is re-set on an interface we depend on the
arrival of a new router advertisment to call addrconf_verify to clean
up the old address (which valid_lft is now set to 0). Old addresses can
linger around for a longer time if e.g. the source of router advertisments
vanishes.
So, call addrconf_verify immediately after setting the new tokenized
address to get rid of the old tokenized addresses.
Cc: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Sun, 23 Jun 2013 22:22:20 +0000 (00:22 +0200)]
ipv6: don't disable interface if last ipv6 address is removed
The reason behind this change is that as soon as we delete
the last ipv6 address of an interface we also lose the
/proc/sys/net/ipv6/conf/<interface> directory. This seems to be a
usability problem for me.
I don't see any reason why we should shutdown ipv6 on that interface in
such cases.
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Sun, 23 Jun 2013 16:39:01 +0000 (18:39 +0200)]
ipv6: split duplicate address detection and router solicitation timer
This patch splits the timers for duplicate address detection and router
solicitations apart. The router solicitations timer goes into inet6_dev
and the dad timer stays in inet6_ifaddr.
The reason behind this patch is to reduce the number of unneeded router
solicitations send out by the host if additional link-local addresses
are created. Currently we send out RS for every link-local address on
an interface.
If the RS timer fires we pick a source address with ipv6_get_lladdr. This
change could hurt people adding additional link-local addresses and
specifying these addresses in the radvd clients section because we
no longer guarantee that we use every ll address as source address in
router solicitations.
Cc: Flavio Leitner <fleitner@redhat.com>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: David Stevens <dlstevens@us.ibm.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Reviewed-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sun, 23 Jun 2013 15:17:56 +0000 (08:17 -0700)]
mlx4: allow order-0 memory allocations in RX path
Signed-off-by: Eric Dumazet <edumazet@google.com>
mlx4 exclusively uses order-2 allocations in RX path, which are
likely to fail under memory pressure.
We therefore drop frames more than needed.
This patch tries order-3, order-2, order-1 and finally order-0
allocations to keep good performance, yet allow allocations if/when
memory gets fragmented.
By using larger pages, and avoiding unnecessary get_page()/put_page()
on compound pages, this patch improves performance as well, lowering
false sharing on struct page.
Also use GFP_KERNEL allocations in initialization path, as allocating 12
MB (390 order-3 pages) can easily fail with GFP_ATOMIC.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Amir Vadai <amirv@mellanox.com>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 25 Jun 2013 23:11:41 +0000 (16:11 -0700)]
Merge branch 'for-davem' of git://git./linux/kernel/git/bwh/sfc-next
Ben Hutchings says:
====================
1. Make EEH recovery work when using legacy interrupts, from Alexandre
Rames.
2. Enable accelerated RFS for VLAN-tagged flows, from Andy Lutomirski.
3. Improve performance for non-TCP (and particularly UDP) traffic, which
regressed in 3.10 when we switched to always allocating paged RX
buffers. Partly by Jon Cooper.
4. Some minor bug fixes to IOMMU detection, timestamping capabilities,
and IRQ cleanup on the probe failure path.
I've dropped the RX skb cache, which improved some benchmarks but
perhaps needs some reworking to be more generally useful.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sebastian Ott [Mon, 24 Jun 2013 11:21:52 +0000 (13:21 +0200)]
qeth: use default napi weight
Since commit
82dc3c63c692b1e1d59378ecee948ac88e034aad
"net: introduce NAPI_POLL_WEIGHT" network drivers receive a warning
when they use napi weight higher than NAPI_POLL_WEIGHT. This patch
reduces QETH_NAPI_WEIGHT from 128 to 64 (NAPI_POLL_WEIGHT).
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefan Raspl [Mon, 24 Jun 2013 11:21:51 +0000 (13:21 +0200)]
qeth: Fix crash on initial MTU size change
When the initial MTU size is changed prior to any activity on the device
(e.g. by attaching a z/VM vNIC already configured in Linux to a guestLAN),
we call dev_kfree_skb_irq(NULL) which results in a kernel panic.
Adding a proper check for NULL pointers to address this issue.
Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ursula Braun [Mon, 24 Jun 2013 11:21:50 +0000 (13:21 +0200)]
qeth: change default standard blkt settings for OSA
blkt settings (or LAN idle settings) for an OSA Express card
determine when and how often an OSA Express card tells the
operating system about new incoming packets. The semantic of
these settings has changed starting with OSA Express3. Currently
the qeth standard settings apply to OSA Express2 and older
generations of OSA Express cards, while new generations of OSA
Express cards require extra coding of their reasonable default.
To cover future OSA Express generations the qeth default standard
blkt setting is now the desired setting for OSA generations
starting with OSA Express3, while the fixed set of older OSA
Express cards receives its blkt settings explicitly.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reviewed-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefan Raspl [Mon, 24 Jun 2013 11:21:49 +0000 (13:21 +0200)]
qeth: Increase default MTU for OSA devices
Increase the default MTU for real OSA devices in layer 2 mode
to 1500 Bytes for increased compatibility.
Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Mon, 24 Jun 2013 11:21:48 +0000 (13:21 +0200)]
netiucv: remove unused macro
If someone is interested to dump something they may consider to use
print_hex_dump() or print_hex_dump_bytes() kernel helpers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Tue, 25 Jun 2013 05:50:11 +0000 (08:50 +0300)]
bnx2x: Remove sparse and coccinelle warnings
This patch solves several sparse issues as well as an unneeded semicolon
found via coccinelle.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 25 Jun 2013 08:30:11 +0000 (01:30 -0700)]
ipv6: add include file to suppress sparse warnings
commit
f88c91ddba95 ("ipv6: statically link
register_inet6addr_notifier()" added following sparse warnings :
net/ipv6/addrconf_core.c:83:5: warning: symbol
'register_inet6addr_notifier' was not declared. Should it be static?
net/ipv6/addrconf_core.c:89:5: warning: symbol
'unregister_inet6addr_notifier' was not declared. Should it be static?
net/ipv6/addrconf_core.c:95:5: warning: symbol
'inet6addr_notifier_call_chain' was not declared. Should it be static?
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 25 Jun 2013 08:21:06 +0000 (01:21 -0700)]
tcp: remove invalid __rcu annotation
struct tcp_fastopen_context has a field named tfm, which is a pointer
to a crypto_cipher structure.
It currently has a __rcu annotation, which is not needed at all.
tcp_fastopen_ctx is the pointer fetched by rcu_dereference(), but once
we have a pointer to current tcp_fastopen_context, we do not use/need
rcu_dereference() to access tfm.
This fixes a lot of sparse errors like the following :
net/ipv4/tcp_fastopen.c:21:31: warning: incorrect type in argument 1 (different address spaces)
net/ipv4/tcp_fastopen.c:21:31: expected struct crypto_cipher *tfm
net/ipv4/tcp_fastopen.c:21:31: got struct crypto_cipher [noderef] <asn:4>*tfm
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jerry Chu <hkchu@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Fri, 21 Jun 2013 17:38:08 +0000 (19:38 +0200)]
packet: nlmon: virtual netlink monitoring device for packet sockets
Currently, there is no good possibility to debug netlink traffic that
is being exchanged between kernel and user space. Therefore, this patch
implements a netlink virtual device, so that netlink messages will be
made visible to PF_PACKET sockets. Once there was an approach with a
similar idea [1], but it got forgotten somehow.
I think it makes most sense to accept the "overhead" of an extra netlink
net device over implementing the same functionality from PF_PACKET
sockets once again into netlink sockets. We have BPF filters that can
already be easily applied which even have netlink extensions, we have
RX_RING zero-copy between kernel- and user space that can be reused,
and much more features. So instead of re-implementing all of this, we
simply pass the skb to a given PF_PACKET socket for further analysis.
Another nice benefit that comes from that is that no code needs to be
changed in user space packet analyzers (maybe adding a dissector, but
not more), thus out of the box, we can already capture pcap files of
netlink traffic to debug/troubleshoot netlink problems.
Also thanks goes to Thomas Graf, Flavio Leitner, Jesper Dangaard Brouer.
[1] http://marc.info/?l=linux-netdev&m=
113813401516110
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Fri, 21 Jun 2013 17:38:07 +0000 (19:38 +0200)]
net: netlink: virtual tap device management
Similarly to the networking receive path with ptype_all taps, we add
the possibility to register netdevices that are for ARPHRD_NETLINK to
the netlink subsystem, so that those can be used for netlink analyzers
resp. debuggers. We do not offer a direct callback function as out-of-tree
modules could do crap with it. Instead, a netdevice must be registered
properly and only receives a clone, managed by the netlink layer. Symbols
are exported as GPL-only.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Fri, 21 Jun 2013 17:38:06 +0000 (19:38 +0200)]
net: if_arp: add ARPHRD_NETLINK type
This small patch adds the definition of ARPHRD_NETLINK which can for
example be used by netlink monitoring devices as device type. So that
sockaddr_ll can pick it up and based on that choose the correct packet
dissector.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 24 Jun 2013 19:43:40 +0000 (12:43 -0700)]
net: Restore unintentional reverts.
This restores commits:
c573972c111eb4c6b3f3250ad71e7c75cc799833
1a5904342c7380ceddd61c0b37544d752d0b1433
da2e2c214953f37c2a6be20226537ca5a329724c
which initially accidently went into 'net', were
reverted there, and then properly placed into 'net-next'.
But the next net --> net-next merge accidently wiped them
out again.
Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Wed, 12 Jun 2013 17:09:08 +0000 (18:09 +0100)]
sfc: Improve test for IOMMU in use
The device::iommu_group field may be set even if no IOMMU is in use.
iommu_present() is still a better indicator, although it doesn't tell
us whether *our* device is affected.
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Wed, 22 May 2013 17:03:35 +0000 (18:03 +0100)]
sfc: Fix IRQ cleanup in case of a probe failure
The lifetime of an irq_cpu_rmap is odd: we have to allocate it before
installing IRQ handlers and free it before removing the IRQ handlers.
As a result of this asymmetry, it was omitted from some failure paths.
On another failure path, we could try to remove IRQ handlers we
had not yet installed.
Move the irq_cpu_rmap allocation and freeing alongside IRQ handler
installation and removal, in efx_nic_{init,fini}_interrupts().
Count the number of IRQ handlers successfully installed and only
remove those on the failure path.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Thu, 16 May 2013 17:38:13 +0000 (18:38 +0100)]
sfc: Do not pass non-TCP packets into GRO code
GRO can handle non-TCP packets and pass them up without coalescing,
but it has to do some extra work to parse the packet which we can
bypass using the hardware parse result. (This condition yields a
false negative for TCP/IPv6 packets received by Falcon, but its
performance is already poor in that case due to lack of checksum
offload.)
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Thu, 16 May 2013 17:38:11 +0000 (18:38 +0100)]
sfc: Define and set RX buffer flag for packets parsed as TCP
This will be useful for shortcutting some software packet parsing.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Andy Lutomirski [Fri, 10 May 2013 23:51:33 +0000 (16:51 -0700)]
sfc: Enable accelerated RFS on vlans
As far as I know, the hardware doesn't support matching on both IP
fields and vlan tag, but it can at least match on the IP fields.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Mon, 8 Apr 2013 16:34:58 +0000 (17:34 +0100)]
sfc: Report software timestamping capabilities
The kernel can generate software receive timestamps and we should
report those for all ports regardless of hardware capabilities.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Jon Cooper [Mon, 8 Apr 2013 11:55:58 +0000 (12:55 +0100)]
sfc: Increase size of RX SKB header area
This allows the SKB to hold the headers without reallocation more often.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Jon Cooper [Mon, 8 Apr 2013 11:49:48 +0000 (12:49 +0100)]
sfc: Enable RX checksum offload for packets not handled by GRO
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Alexandre Rames [Thu, 21 Mar 2013 16:41:43 +0000 (16:41 +0000)]
sfc: Fix EEH with legacy interrupts.
PCI legacy interrupts are level-triggered, and we cannot mask them up
on an isolated device. Instead, disable the IRQ at the controller
until we have recovered.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Yuval Mintz [Mon, 24 Jun 2013 08:04:10 +0000 (11:04 +0300)]
bnx2x: Fix compilation with no IOV support
This fixes an issue caused by submit
78c3bcc5d1af64f51d9f30b0f5a2d1985bf69734
`bnx2x: Improve PF behaviour toward VF', which made the bnx2x driver fail
compilation when PCI_IOV is not set.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wedson Almeida Filho [Mon, 24 Jun 2013 06:33:48 +0000 (23:33 -0700)]
net: Unmap fragment page once iterator is done
Callers of skb_seq_read() are currently forced to call skb_abort_seq_read()
even when consuming all the data because the last call to skb_seq_read (the
one that returns 0 to indicate the end) fails to unmap the last fragment page.
With this patch callers will be allowed to traverse the SKB data by calling
skb_prepare_seq_read() once and repeatedly calling skb_seq_read() as originally
intended (and documented in the original commit
677e90eda), that is, only call
skb_abort_seq_read() if the sequential read is actually aborted.
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 24 Jun 2013 07:31:02 +0000 (00:31 -0700)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless-next
John W. Linville says:
====================
I would guess that this is the last big wireless pull request before
the 3.11 merge window...
Regarding the mac80211 bits, Johannes says:
"I have a number of mesh fixes and improvements from Colleen, Jacob,
Ashok and Thomas, powersave fixes in mac80211 from Alex, improved
management-TX from Antonio, and a few various things, including locking
fixes, from others and myself. Overall though, nothing really stands
out."
As for the iwlwifi bits, Johannes says:
"Emmanuel contributed two AP mode fixes, removed an unused field, fixed a
comment and added a warning for something that shouldn't happen in
practice, and I removed the declaration of a function that doesn't even
exist and cleaned up a small include."
"This time I have a number of cleanups, a small fix from Emmanuel and two
performance improvements that combined reduce our driver's CPU
utilisation as much as 75% in high TX-throughput scenarios."
"These two patches fix two issues with using rfkill randomly during
traffic, which would then cause our driver to stop working and not be
able to recover at all."
Regarding the ath6kl bits, Kalle says:
"Here are few simple patches for ath6kl. We have a suspend crash fix for
USB from Shafi, use of mac_pton(), a compiler warning fix and a fix for
module initialisation error path."
Kalle also sends the biggest single item of note, the new ath10k
driver for Qualcomm Atheros 802.11ac CQA98xx devices.
Included is an NFC pull, of which Samuel says:
"These are the pending NFC patches for the 3.11 merge window.
It contains the pending fixes that were on nfc-fixes (nfc-fixes-3.10-2),
along with a few more for the pn544 and pn533 drivers, the LLCP
disconnection path and an LLCP memory leak.
Highlights for this one are:
- An initial secure element API. NFC chipsets can carry an embedded
secure element or get access to the SIM one. In both cases they
control the secure elements and this API provides a way to discover,
enable and disable the available SEs. It also exports that to
userspace in order for SE focused middleware to actually do something
with them (e.g. payments).
- NCI over SPI support. SPI is the most complex NCI specified transport
layer and we now have support for it in the kernel. The next step will
be to implement drivers for NCI chipsets using this transport like
e.g. bcm2079x.
- NFC p2p hardware simulation driver. We now have an nfcsim driver that
is mostly a loopback device between 2 NFC interfaces. It also
implements the rest of the NFC core API like polling and target
detection. This driver, with neard running on top of it, allows us to
completely test the LLCP, SNEP and Handover implementation without
physical hardware.
- A Firmware update netlink API. Most (All ?) HCI chipsets have a
special firmware update mode where applications can push a new
firmware that will be flashed. We now have a netlink API for providing
that mode to e.g. nfctool."
On top of all that, there are a variety of updates to brcmfmac,
iwlegacy, rtlwifi, wil6210, and the TI wl12xx drivers. As usual,
the bcma and ssb busses get a little love as well, as do a handful
of others here and there.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Fri, 21 Jun 2013 06:20:08 +0000 (09:20 +0300)]
xen-netback: double free on unload
There is a typo here, "i" vs "j", so we would crash on module_exit().
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesse Gross [Fri, 21 Jun 2013 23:17:11 +0000 (16:17 -0700)]
ip_tunnel: Protect tunnel functions with CONFIG_INET guard.
Tunnel constants can be used in generic code but in these cases
the inline functions in ip_tunnels.h cause compilation problems
if CONFIG_INET is not set.
CC: Pravin Shelar <pshelar@nicira.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pravin B Shelar [Thu, 20 Jun 2013 22:08:14 +0000 (15:08 -0700)]
openvswitch: Use correct config guard.
This bug was introduced by commit
aa310701e787087
(openvswitch: Add gre tunnel support.)
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Fri, 21 Jun 2013 07:37:25 +0000 (15:37 +0800)]
bridge: fix a typo in comments
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 20 Jun 2013 08:15:51 +0000 (01:15 -0700)]
net: allow large number of tx queues
netif_alloc_netdev_queues() uses kcalloc() to allocate memory
for the "struct netdev_queue *_tx" array.
For large number of tx queues, kcalloc() might fail, so this
patch does a fallback to vzalloc().
As vmalloc() adds overhead on a critical network path, add __GFP_REPEAT
to kzalloc() flags to do this fallback only when really needed.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 24 Jun 2013 06:54:23 +0000 (23:54 -0700)]
Merge branch 'bnx2x'
Yuval Mintz says:
====================
This patch series mostly revolves around improving SR-IOV implementation
(Better PF-VF relation, sanity checks and timings), as well as including
a patch correcting the (outward) advertisement of 20G capabilities.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Thu, 20 Jun 2013 14:39:11 +0000 (17:39 +0300)]
bnx2x: Fix 20G KR2 support claims
Don't claim 20G is supported if the speed is unsupported by the phys
(reflected by various ethtools and ndos).
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ariel Elior [Thu, 20 Jun 2013 14:39:10 +0000 (17:39 +0300)]
bnx2x: improve VF timings
Wait 100ms for FLR to complete in parallel over all VFs instead of serializing
the waits (which can amount to several seconds with 64 VFs).
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ariel Elior [Thu, 20 Jun 2013 14:39:09 +0000 (17:39 +0300)]
bnx2x: VF ndo sanity
If iproute2 VF callbacks are invoked before PF is loaded,
abort gracefully.
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ariel Elior [Thu, 20 Jun 2013 14:39:08 +0000 (17:39 +0300)]
bnx2x: Improve PF behaviour toward VF
If PF is unloaded with loaded VFs, signal towards VFs so they can detect
this gracefully.
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
----
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 2 ++
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 3 +++
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 23 +++++++++++++++++++---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 24 ++++++++++++++++++++---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h | 2 ++
drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c | 12 +++++++++++-
drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h | 5 ++++-
7 files changed, 63 insertions(+), 8 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
Asias He [Thu, 20 Jun 2013 09:20:33 +0000 (17:20 +0800)]
VSOCK: Fix VSOCK_HASH and VSOCK_CONN_HASH
If we mod with VSOCK_HASH_SIZE -1, we get 0, 1, .... 249. Actually, we
have vsock_bind_table[0 ... 250] and vsock_connected_table[0 .. 250].
In this case the last entry will never be used.
We should mod with VSOCK_HASH_SIZE instead.
Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Andy King <acking@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Asias He [Thu, 20 Jun 2013 09:20:32 +0000 (17:20 +0800)]
VSOCK: Remove unnecessary label
Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Andy King <acking@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Asias He [Thu, 20 Jun 2013 09:20:31 +0000 (17:20 +0800)]
VSOCK: Return VMCI_ERROR_NO_MEM when fails to allocate skb
vmci_transport_recv_dgram_cb always return VMCI_SUCESS even if we fail
to allocate skb, return VMCI_ERROR_NO_MEM instead.
Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Andy King <acking@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Asias He [Thu, 20 Jun 2013 09:20:30 +0000 (17:20 +0800)]
VSOCK: Introduce vsock_auto_bind helper
This peace of code is called three times, let's have a helper for it.
Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Andy King <acking@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 20 Jun 2013 08:30:00 +0000 (16:30 +0800)]
ipv6: remove a useless pr_info() in addrconf_gre_config()
This is debug info, should at least be pr_debug(), but given
that this code is in upstream for two years, there is no
need to keep this debugging printk any more, so just remove it.
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jitendra Kalsaria [Sat, 22 Jun 2013 08:12:07 +0000 (04:12 -0400)]
qlcnic: Update version to 5.2.44
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rajesh Borundia [Sat, 22 Jun 2013 08:12:06 +0000 (04:12 -0400)]
qlcnic: Add support for 83xx suspend and resume.
o Implement shutdown and resume handlers for 83xx.
o Refactor 82xx shutdown and resume handlers.
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pratik Pujar [Sat, 22 Jun 2013 08:12:05 +0000 (04:12 -0400)]
qlcnic: Add support for 'set driver version' in 83XX
Issue 'set driver version' during driver load and after reset recovery
to notify the driver version to the firmware.
Signed-off-by: Pratik Pujar <pratik.pujar@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>