1.When no interface is specified in an IPV6_PKTINFO ancillary data
item, the interface specified in an IPV6_PKTINFO sticky optionis
is used.
RFC3542:
6.7. Summary of Outgoing Interface Selection
This document and [RFC-3493] specify various methods that affect the
selection of the packet's outgoing interface. This subsection
summarizes the ordering among those in order to ensure deterministic
behavior.
For a given outgoing packet on a given socket, the outgoing interface
is determined in the following order:
1. if an interface is specified in an IPV6_PKTINFO ancillary data
item, the interface is used.
2. otherwise, if an interface is specified in an IPV6_PKTINFO sticky
option, the interface is used.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When get receiving interface index while no message is received,
the the value seted with setsockopt() should be returned.
RFC 3542:
Issuing getsockopt() for the above options will return the sticky
option value i.e., the value set with setsockopt(). If no sticky
option value has been set getsockopt() will return the following
values:
- For the IPV6_PKTINFO option, it will return an in6_pktinfo
structure with ipi6_addr being in6addr_any and ipi6_ifindex being
zero.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are three reasons for me to add this support:
1.When no interface is specified in an IPV6_PKTINFO ancillary data
item, the interface specified in an IPV6_PKTINFO sticky optionis
is used.
RFC3542:
6.7. Summary of Outgoing Interface Selection
This document and [RFC-3493] specify various methods that affect the
selection of the packet's outgoing interface. This subsection
summarizes the ordering among those in order to ensure deterministic
behavior.
For a given outgoing packet on a given socket, the outgoing interface
is determined in the following order:
1. if an interface is specified in an IPV6_PKTINFO ancillary data
item, the interface is used.
2. otherwise, if an interface is specified in an IPV6_PKTINFO sticky
option, the interface is used.
2.When no IPV6_PKTINFO ancillary data is received,getsockopt() should
return the sticky option value which set with setsockopt().
RFC 3542:
Issuing getsockopt() for the above options will return the sticky
option value i.e., the value set with setsockopt(). If no sticky
option value has been set getsockopt() will return the following
values:
3.Make the setsockopt implementation POSIX compliant.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
These 4 drivers have identical full duplex flow control resolution
functions. This patch changes them all to use one common function.
The function in question decides whether a device should enable TX and
RX flow control in a standard way (IEEE 802.3-2005 table 28B-3), so this
should also be useful for other drivers.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
flags used within drivers for indicating tx and rx flow control are
defined in 4 drivers (and probably more), move these constants to mii.h.
The 3 SMSC drivers use the same constants (FLOW_CTRL_TX), but TG3 uses
TG3_FLOW_CTRL_TX, so this patch also renames the constants within TG3.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The NIC driver can work with mutliple versions of the FW.
Let the driver load when the embedded FW does not match,
and the FW update mechanism failed.
The iWARP module will make its own loading decision.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The pppol2tp driver has had broken UDP checksum code for a long
time. This patch fixes it. If UDP checksums are enabled in the
tunnel's UDP socket, the L2TP driver now properly validates the
checksum on receive and fills in the checksum on transmit. If the
network device has hardware checksum support and is enabled, it is
used instead of generating/checking the checksum in software.
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix this sparse warnings by making the functions static:
drivers/isdn/hardware/eicon/di.c:356:6: warning: symbol 'isdn_rc' was not declared. Should it be static?
drivers/isdn/hardware/eicon/di.c:558:6: warning: symbol 'isdn_ind' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:595:6: warning: symbol 'api_parse' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:634:6: warning: symbol 'api_save_msg' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:666:6: warning: symbol 'api_load_msg' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3417:6: warning: symbol 'manufacturer_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3745:6: warning: symbol 'manufacturer_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:4077:6: warning: symbol 'control_rc' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:4743:6: warning: symbol 'data_rc' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:4779:6: warning: symbol 'data_ack' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:4805:6: warning: symbol 'sig_ind' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:6173:6: warning: symbol 'SendInfo' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:6349:6: warning: symbol 'SendMultiIE' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:6468:6: warning: symbol 'nl_ind' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7250:6: warning: symbol 'get_plci' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7409:6: warning: symbol 'add_d' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7427:6: warning: symbol 'add_ai' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7448:6: warning: symbol 'add_b1' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7912:6: warning: symbol 'add_b23' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8709:6: warning: symbol 'nl_req_ncci' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8731:6: warning: symbol 'send_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8866:6: warning: symbol 'listen_check' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8909:6: warning: symbol 'IndParse' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8994:6: warning: symbol 'ie_compare' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9003:6: warning: symbol 'find_cip' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9071:6: warning: symbol 'SetVoiceChannel' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9089:6: warning: symbol 'VoiceChannelOff' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9102:6: warning: symbol 'AdvCodecSupport' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9198:6: warning: symbol 'CodecIdCheck' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement NIC Tx multiqueue.
Bump up driver version.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds GRO support to e1000e by making it invoke napi_gro_receive
instead of netif_receive_skb.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the ethtool ops to enable and disable GRO. It also
makes GRO depend on RX checksum offload much the same as how TSO
depends on SG support.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the TCP-specific portion of GRO. The criterion for
merging is extremely strict (the TCP header must match exactly apart
from the checksum) so as to allow refragmentation. Otherwise this
is pretty much identical to LRO, except that we support the merging
of ECN packets.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the helper skb_gro_receive to merge packets for
GRO. The current method is to allocate a new header skb and then
chain the original packets to its frag_list. This is done to
make it easier to integrate into the existing GSO framework.
In future as GSO is moved into the drivers, we can undo this and
simply chain the original packets together.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds GRO support for IPv4.
The criteria for merging is more stringent than LRO, in particular,
we require all fields in the IP header to be identical except for
the length, ID and checksum. In addition, the ID must form an
arithmetic sequence with a difference of one.
The ID requirement might seem overly strict, however, most hardware
TSO solutions already obey this rule. Linux itself also obeys this
whether GSO is in use or not.
In future we could relax this rule by storing the IDs (or rather
making sure that we don't drop them when pulling the aggregate
skb's tail).
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the top-level GRO (Generic Receive Offload) infrastructure.
This is pretty similar to LRO except that this is protocol-independent.
Instead of holding packets in an lro_mgr structure, they're now held in
napi_struct.
For drivers that intend to use this, they can set the NETIF_F_GRO bit and
call napi_gro_receive instead of netif_receive_skb or just call netif_rx.
The latter will call napi_receive_skb automatically. When napi_gro_receive
is used, the driver must either call napi_complete/napi_rx_complete, or
call napi_gro_flush in softirq context if the driver uses the primitives
__napi_complete/__napi_rx_complete.
Protocols will set the gro_receive and gro_complete function pointers in
order to participate in this scheme.
In addition to the packet, gro_receive will get a list of currently held
packets. Each packet in the list has a same_flow field which is non-zero
if it is a potential match for the new packet. For each packet that may
match, they also have a flush field which is non-zero if the held packet
must not be merged with the new packet.
Once gro_receive has determined that the new skb matches a held packet,
the held packet may be processed immediately if the new skb cannot be
merged with it. In this case gro_receive should return the pointer to
the existing skb in gro_list. Otherwise the new skb should be merged into
the existing packet and NULL should be returned, unless the new skb makes
it impossible for any further merges to be made (e.g., FIN packet) where
the merged skb should be returned.
Whenever the skb is merged into an existing entry, the gro_receive
function should set NAPI_GRO_CB(skb)->same_flow. Note that if an skb
merely matches an existing entry but can't be merged with it, then
this shouldn't be set.
If gro_receive finds it pointless to hold the new skb for future merging,
it should set NAPI_GRO_CB(skb)->flush.
Held packets will be flushed by napi_gro_flush which is called by
napi_complete and napi_rx_complete.
Currently held packets are stored in a singly liked list just like LRO.
The list is limited to a maximum of 8 entries. In future, this may be
expanded to use a hash table to allow more flows to be held for merging.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch allows GSO to handle frag_list in a limited way for the
purposes of allowing packets merged by GRO to be refragmented on
output.
Most hardware won't (and aren't expected to) support handling GRO
frag_list packets directly. Therefore we will perform GSO in
software for those cases.
However, for drivers that can support it (such as virtual NICs) we
may not have to segment the packets at all.
Whether the added overhead of GRO/GSO is worthwhile for bridges
and routers when weighed against the benefit of potentially
increasing the MTU within the host is still an open question.
However, for the case of host nodes this is undoubtedly a win.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds limited support for handling frag_list packets in
skb_segment. The intention is to support GRO (Generic Receive Offload)
packets which will be constructed by chaining normal packets using
frag_list.
As such we require all frag_list members terminate on exact MSS
boundaries. This is checked using BUG_ON.
As there should only be one producer in the kernel of such packets,
namely GRO, this requirement should not be difficult to maintain.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 5348/1: fix documentation wrt location of the alignment trap interface
[ARM] Ensure linux/hardirqs.h is included where required
[ARM] fix kernel-doc syntax
[ARM] arch/arm/common/sa1111.c: Correct error handling code
[ARM] 5341/2: there is no copy_page on nommu ARM
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
Phonet: keep TX queue disabled when the device is off
SCHED: netem: Correct documentation comment in code.
netfilter: update rwlock initialization for nat_table
netlabel: Compiler warning and NULL pointer dereference fix
e1000e: fix double release of mutex
IA64: HP_SIMETH needs to depend upon NET
netpoll: fix race on poll_list resulting in garbage entry
ipv6: silence log messages for locally generated multicast
sungem: improve ethtool output with internal pcs and serdes
tcp: tcp_vegas cong avoid fix
sungem: Make PCS PHY support partially work again.
Otherwise those using it in transition patches (eg. kvm) can't compile
with CONFIG_SMP=n:
arch/x86/kvm/../../../virt/kvm/kvm_main.c: In function 'make_all_cpus_request':
arch/x86/kvm/../../../virt/kvm/kvm_main.c:380: error: implicit declaration of function 'smp_call_function_many'
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When a cgroup is removed, it's unlinked from its parent's children list,
but not actually freed until the last dentry on it is released (at which
point cgrp->root->number_of_cgroups is decremented).
Currently rebind_subsystems checks for the top cgroup's child list being
empty in order to rebind subsystems into or out of a hierarchy - this can
result in the set of subsystems bound to a hierarchy being
removed-but-not-freed cgroup.
The simplest fix for this is to forbid remounts that change the set of
subsystems on a hierarchy that has removed-but-not-freed cgroups. This
bug can be reproduced via:
mkdir /mnt/cg
mount -t cgroup -o ns,freezer cgroup /mnt/cg
mkdir /mnt/cg/foo
sleep 1h < /mnt/cg/foo &
rmdir /mnt/cg/foo
mount -t cgroup -o remount,ns,devices,freezer cgroup /mnt/cg
kill $!
Though the above will cause oops in -mm only but not mainline, but the bug
can cause memory leak in mainline (and even oops)
Signed-off-by: Paul Menage <menage@google.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tyler Hicks and Dustin Kirkland are now the primary contact points for
eCryptfs issues that may arise from this point forward.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Acked-by: Dustin Kirkland <kirkland@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The kmem_cache_create() function in the slob allocator passes the SLAB
flags as GFP flags to the slob_alloc() function. The patch changes this
call to pass GFP_KERNEL as the other allocators seem to do.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Based upon a report from Randy Dunlap.
The compat netdev ops assignments need to happen in
8390.c and 8390p.c, not lib8390.c, as only the type
specific code can assign the correct function pointers.
Signed-off-by: David S. Miller <davem@davemloft.net>
dcbml_setnumtcs wasn't checking for the presence of the setnumtcs
function. Instead, it was checking for setstate which was a bug.
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Eric W Multanen <eric.w.multanen@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This issue was initially reported by Joerg Roedel <joerg.roedel@amd.com>
It appears that ixgbe has had a long standing bug where it was unmapping a different size than it had mapped.
ixgbe 0000:02:00.0: PCI-DMA: device driver frees DMA memory with different sizes than it mapped.
ixgbe 0000:02:00.0: PCI-DMA: device driver frees DMA memory with different size [device address=0x0000000003fed812] [map size=258 bytes] [unmap size=256 bytes]
Pid: 6178, comm: rmmod Not tainted 2.6.28-rc5 #4 Call Trace:
[<ffffffff8022a2ae>] iommu_queue_inv_iommu_pages+0x5e/0x70
[<ffffffff80225956>] check_unmap+0x1c6/0x240 [<ffffffff80225ff5>] debug_unmap_single+0xb5/0x110 [<ffffffffa0213997>] ixgbe_clean_rx_ring+0x147/0x220 [<ffffffffa0214d7d>] ixgbe_down+0x2fd/0x3d0 [ixgbe] [<ffffffffa02150b3>] ixgbe_close+0x13/0xc0 [ixgbe] [<ffffffff80431326>] dev_close+0x56/0xa0 [<ffffffff804313b3>] rollback_registered+0x43/0x220 [<ffffffff804315a5>] unregister_netdevice+0x15/0x60 [<ffffffff80431601>] unregister_netdev+0x11/0x20 [<ffffffffa021aef8>] ixgbe_remove+0x48/0x16e [ixgbe] [<ffffffff80386ffc>] pci_device_remove+0x2c/0x60 [<ffffffff803ef929>] __device_release_driver+0x99/0x100
[<ffffffff803efa48>] driver_detach+0xb8/0xc0 [<ffffffff803eea6e>] bus_remove_driver+0x8e/0xd0 [<ffffffff80387374>] pci_unregister_driver+0x34/0x90 [<ffffffff8026c6c7>] sys_delete_module+0x1c7/0x2a0 [<ffffffff802a9ce9>] do_munmap+0x349/0x390 [<ffffffff80374481>] __up_write+0x21/0x150 [<ffffffff8020c30b>] system_call_fastpath+0x16/0x1b
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds support for SMSC's LAN9420 PCI ethernet controller
to ethtool's dump registers (-d) command.
This patch is for use with an accompanying ethtool patch, which decodes
the register dump.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The netem simulator is no longer limited by Linux timer resolution HZ.
Not since Patrick McHardy changed the QoS system to use hrtimer.
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
The commit e099a17357
(netfilter: netns nat: per-netns NAT table) renamed the
nat_table from __nat_table to nat_table without updating the
__RW_LOCK_UNLOCKED(__nat_table.lock).
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
