30 Oct, 2009
3 commits
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The temporary copy of the VLAN group is not neccessary since the lower device
is already in the process of being unregistered, if it was neccessary the
memset of the global group would introduce a race condition.With this removed, the changes to the original code are only a few lines, so
remove the new function and move the code back into vlan_device_event().Signed-off-by: Patrick McHardy
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller -
This will allow drivers to adjust their receive path dynamically
based on whether GRO is being applied successfully.Currently all in-tree callers ignore the return values of these
functions and do not need to be changed.Signed-off-by: Ben Hutchings
Acked-by: Herbert Xu
Signed-off-by: David S. Miller -
This clarifies which return and parameter types are GRO result codes
and not RX result codes.Signed-off-by: Ben Hutchings
Acked-by: Herbert Xu
Signed-off-by: David S. Miller
29 Oct, 2009
1 commit
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Implements the netdev_ops.ndo_fcoe_get_wwn for VLAN device.
Signed-off-by: Yi Zou
Signed-off-by: Jeff Kirsher
Signed-off-by: David S. Miller
28 Oct, 2009
2 commits
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Use unregister_netdevice_many() to speedup master device unregister.
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
Adding a list_head parameter to rtnl_link_ops->dellink() methods
allow us to queue devices on a list, in order to dismantle
them all at once.Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
27 Oct, 2009
1 commit
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We currently use a 16 bit field (vlan_tci) to store VLAN ID/PRIO on a skb.
Null value is used as a special value, meaning vlan tagging not enabled.
This forbids use of null vlan ID.As pointed by David, some drivers use the 3 high order bits (PRIO)
As VLAN ID is 12 bits, we can use the remaining bit (CFI) as a flag, and
allow null VLAN ID.In case future code really wants to use VLAN_CFI_MASK, we'll have to use
a bit outside of vlan_tci.#define VLAN_PRIO_MASK 0xe000 /* Priority Code Point */
#define VLAN_PRIO_SHIFT 13
#define VLAN_CFI_MASK 0x1000 /* Canonical Format Indicator */
#define VLAN_TAG_PRESENT VLAN_CFI_MASK
#define VLAN_VID_MASK 0x0fff /* VLAN Identifier */Reported-by: Gertjan Hofman
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
27 Sep, 2009
1 commit
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Fix vlan_get_size to include vlan->flags. Currently, the
size of the vlan flags is not included in the nlmsg size.Signed-off-by: John Fastabend
Signed-off-by: Jeff Kirsher
Signed-off-by: David S. Miller
04 Sep, 2009
1 commit
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Its hard to tell if vlans are dropping frames, since
every frame given to vlan_???_start_xmit() functions
is accounted as fully transmitted by lower device.We can test dev_queue_xmit() return values to
properly account for dropped frames.Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
03 Sep, 2009
2 commits
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vlan_dev_hard_start_xmit() & vlan_dev_hwaccel_hard_start_xmit()
select txqueue number 0, instead of using index provided by
skb_get_queue_mapping().This is not correct after commit 2e59af3dcbdf11635c03f
[vlan: multiqueue vlan device] because
txq->tx_packets & txq->tx_bytes changes are performed on
a single location, and not the right locking.Fix is to take the appropriate struct netdev_queue pointer
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
vlan devices are currently not multi-queue capable.
We can do that with a new rtnl_link_ops method,
get_tx_queues(), called from rtnl_create_link()This new method gets num_tx_queues/real_num_tx_queues
from real device.register_vlan_device() is also handled.
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
01 Sep, 2009
2 commits
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This adds implementation of the net_devices_ops.ndo_fcoe_enable/_disable to
the VLAN driver. It checks if the real_dev has support for ndo_fcoe_enable/
ndo_fcoe_disable and if so, passes on to call the associated real_dev.Signed-off-by: Yi Zou
Signed-off-by: Jeff Kirsher
Signed-off-by: David S. Miller -
Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller
15 Aug, 2009
1 commit
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Adds fcoe offload related net_device_ops functions vlan_dev_fcoe_ddp_setup
and vlan_dev_fcoe_ddp_done, their implementation simply calls real eth device
net_device_ops for FCoE DDP setup and done operations.Updates VLAN netdev field value for fcoe_ddp_xid from real eth device netdev.
Above changes are required for fcoe DDP offload working on a VLAN interface.
Signed-off-by: Vasu Dev
Signed-off-by: Jeff Kirsher
Signed-off-by: David S. Miller
06 Aug, 2009
1 commit
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String literals are constant, and usually, we can also tag the array
of pointers const too, moving it to the .rodata section.Signed-off-by: Jan Engelhardt
Signed-off-by: David S. Miller
31 Jul, 2009
1 commit
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There is no reason for the arbitrary restriction that device must be
up to create a vlan. This patch was added to Vyatta kernel to resolve startup
ordering issues where vlan's are created but real device was disabled.Note: the vlan already correctly inherits the operstate from real device; so
if vlan is created and real device is marked down, the vlan is marked
down.Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller
20 Jul, 2009
1 commit
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When the physical MTU changes we want to ensure that all existing
VLAN device MTUs do not exceed the new underlying MTU. This patch
adds that propagation.Signed-off-by: Herbert Xu
Signed-off-by: David S. Miller
10 Jun, 2009
1 commit
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The VLAN 8021q driver needs to call rcu_barrier() when unloading the module,
instead of syncronize_net(). This is needed to make sure that outstanding
call_rcu() callbacks have completed, before the callback function code is
removed on module unload.Signed-off-by: Jesper Dangaard Brouer
Reviewed-by: Paul E. McKenney
Acked-by: Patrick McHardy
Signed-off-by: David S. Miller
30 May, 2009
1 commit
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This patch converts unicast address list to standard list_head using
previously introduced struct netdev_hw_addr. It also relaxes the
locking. Original spinlock (still used for multicast addresses) is not
needed and is no longer used for a protection of this list. All
reading and writing takes place under rtnl (with no changes).I also removed a possibility to specify the length of the address
while adding or deleting unicast address. It's always dev->addr_len.The convertion touched especially e1000 and ixgbe codes when the
change is not so trivial.Signed-off-by: Jiri Pirko
drivers/net/bnx2.c | 13 +--
drivers/net/e1000/e1000_main.c | 24 +++--
drivers/net/ixgbe/ixgbe_common.c | 14 ++--
drivers/net/ixgbe/ixgbe_common.h | 4 +-
drivers/net/ixgbe/ixgbe_main.c | 6 +-
drivers/net/ixgbe/ixgbe_type.h | 4 +-
drivers/net/macvlan.c | 11 +-
drivers/net/mv643xx_eth.c | 11 +-
drivers/net/niu.c | 7 +-
drivers/net/virtio_net.c | 7 +-
drivers/s390/net/qeth_l2_main.c | 6 +-
drivers/scsi/fcoe/fcoe.c | 16 ++--
include/linux/netdevice.h | 18 ++--
net/8021q/vlan.c | 4 +-
net/8021q/vlan_dev.c | 10 +-
net/core/dev.c | 195 +++++++++++++++++++++++++++-----------
net/dsa/slave.c | 10 +-
net/packet/af_packet.c | 4 +-
18 files changed, 227 insertions(+), 137 deletions(-)
Signed-off-by: David S. Miller
25 May, 2009
1 commit
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All drivers are already converted to new net_device_ops API
and nobody uses old API anymore.Signed-off-by: Alexander Beregalov
Signed-off-by: David S. Miller
19 May, 2009
2 commits
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One point of contention in high network loads is the dst_release() performed
when a transmited skb is freed. This is because NIC tx completion calls
dev_kree_skb() long after original call to dev_queue_xmit(skb).CPU cache is cold and the atomic op in dst_release() stalls. On SMP, this is
quite visible if one CPU is 100% handling softirqs for a network device,
since dst_clone() is done by other cpus, involving cache line ping pongs.It seems right place to release dst is in dev_hard_start_xmit(), for most
devices but ones that are virtual, and some exceptions.David Miller suggested to define a new device flag, set in alloc_netdev_mq()
(so that most devices set it at init time), and carefuly unset in devices
which dont want a NULL skb->dst in their ndo_start_xmit().List of devices that must clear this flag is :
- loopback device, because it calls netif_rx() and quoting Patrick :
"ip_route_input() doesn't accept loopback addresses, so loopback packets
already need to have a dst_entry attached."
- appletalk/ipddp.c : needs skb->dst in its xmit function- And all devices that call again dev_queue_xmit() from their xmit function
(as some classifiers need skb->dst) : bonding, vlan, macvlan, eql, ifb, hdlc_frSigned-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
We can update netdev_queue tx_bytes/tx_packets/tx_dropped counters instead
of dev->stats ones, to reduce number of cache lines dirtied in xmit path.This fixes a performance problem on SMP when many different cpus take
vlan tx path.Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
30 Apr, 2009
1 commit
-
Conflicts:
Documentation/isdn/00-INDEX
drivers/net/wireless/iwlwifi/iwl-scan.c
drivers/net/wireless/rndis_wlan.c
net/mac80211/main.c
26 Apr, 2009
1 commit
-
Currently, the VLAN event handler does not adjust the VLAN
device's carrier state when the real device or the VLAN device is set
administratively up or down.The following patch adds a transfer of operating state from the
real device to the VLAN device when the real device is administratively
set up or down, and sets the carrier state up or down during init, open
and close of the VLAN device.This permits observers above the VLAN device that care about the
carrier state (bonding's link monitor, for example) to receive updates
for administrative changes by more closely mimicing the behavior of real
devices.Signed-off-by: Jay Vosburgh
Signed-off-by: Patrick McHardy
21 Apr, 2009
2 commits
-
Signed-off-by: Patrick McHardy
Signed-off-by: David S. Miller -
Conflicts:
net/core/dev.c
18 Apr, 2009
1 commit
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Check whether the underlying device provides a set of ethtool ops before
checking for individual handlers to avoid NULL pointer dereferences.Reported-by: Art van Breemen
Signed-off-by: Patrick McHardy
Signed-off-by: David S. Miller
17 Apr, 2009
1 commit
16 Apr, 2009
1 commit
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It turns out that copying a 16-byte area at ~800k times a second
can be really expensive :) This patch redesigns the frags GRO
interface to avoid copying that area twice.The two disciples of the frags interface have been converted.
Signed-off-by: Herbert Xu
Signed-off-by: David S. Miller
14 Apr, 2009
1 commit
-
Hi:
gro: Normalise skb before bypassing GRO on netpoll VLAN path
When we detect netpoll RX on the GRO VLAN path we bail out and
call the normal VLAN receive handler. However, the packet needs
to be normalised by calling eth_type_trans since that's what the
normal path expects (normally the GRO path does the fixup).This patch adds the necessary call to vlan_gro_frags.
Signed-off-by: Herbert Xu
Thanks,
Signed-off-by: David S. Miller
18 Mar, 2009
1 commit
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Jarek Poplawski pointed out that my previous fix is broken for
VLAN+netpoll as if netpoll is enabled we'd end up in the normal
receive path instead of the VLAN receive path.This patch fixes it by calling the VLAN receive hook.
Signed-off-by: Herbert Xu
Signed-off-by: David S. Miller
17 Mar, 2009
1 commit
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As my netpoll fix for net doesn't really work for net-next, we
need this update to move the checks into the right place. As it
stands we may pass freed skbs to netpoll_receive_skb.This patch also introduces a netpoll_rx_on function to avoid GRO
completely if we're invoked through netpoll. This might seem
paranoid but as netpoll may have an external receive hook it's
better to be safe than sorry. I don't think we need this for
2.6.29 though since there's nothing immediately broken by it.This patch also moves the GRO_* return values to netdevice.h since
VLAN needs them too (I tried to avoid this originally but alas
this seems to be the easiest way out). This fixes a bug in VLAN
where it continued to use the old return value 2 instead of the
correct GRO_DROP.Signed-off-by: Herbert Xu
Signed-off-by: David S. Miller
10 Mar, 2009
1 commit
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Protocols that use packet_type can be __read_mostly section for better
locality. Elminate any unnecessary initializations of NULL.Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller
05 Mar, 2009
2 commits
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Conflicts:
drivers/net/tokenring/tmspci.c
drivers/net/ucc_geth_mii.c -
As analyzed by Patrick McHardy, vlan needs to reset it's
netdev_ops pointer in it's ->init() function but this
leaves the compat method pointers stale.Add a netdev_resync_ops() and call it from the vlan code.
Any other driver which changes ->netdev_ops after register_netdevice()
will need to call this new function after doing so too.With help from Patrick McHardy.
Tested-by: Patrick McHardy
Signed-off-by: David S. Miller
02 Mar, 2009
1 commit
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Conflicts:
drivers/net/wireless/iwlwifi/iwl-tx.c
net/8021q/vlan_core.c
net/core/dev.c
01 Mar, 2009
1 commit
-
The netpoll entry checks are required to ensure that we don't
receive normal packets when invoked via netpoll. Unfortunately
it only ever worked for the netif_receive_skb/netif_rx entry
points. The VLAN (and subsequently GRO) entry point didn't
have the check and therefore can trigger all sorts of weird
problems.This patch adds the netpoll check to all entry points.
I'm still uneasy with receiving at all under netpoll (which
apparently is only used by the out-of-tree kdump code). The
reason is it is perfectly legal to receive all data including
headers into highmem if netpoll is off, but if you try to do
that with netpoll on and someone gets a printk in an IRQ handler
you're going to get a nice BUG_ON.Signed-off-by: Herbert Xu
Signed-off-by: David S. Miller
09 Feb, 2009
1 commit
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This patch optimises the Ethernet header comparison to use 2-byte
and 4-byte xors instead of memcmp. In order to facilitate this,
the actual comparison is now carried out by the callers of the
shared dev_gro_receive function.This has a significant impact when receiving 1500B packets through
10GbE.Signed-off-by: Herbert Xu
Signed-off-by: David S. Miller
01 Feb, 2009
1 commit
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Base versions handle constant folding now.
Signed-off-by: Harvey Harrison
Signed-off-by: David S. Miller
30 Jan, 2009
1 commit
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Unfortunately simplicity isn't always the best. The fraginfo
interface turned out to be suboptimal. The problem was quite
obvious. For every packet, we have to copy the headers from
the frags structure into skb->head, even though for 99% of the
packets this part is immediately thrown away after the merge.LRO didn't have this problem because it directly read the headers
from the frags structure.This patch attempts to address this by creating an interface
that allows GRO to access the headers in the first frag without
having to copy it. Because all drivers that use frags place the
headers in the first frag this optimisation should be enough.Signed-off-by: Herbert Xu
Signed-off-by: David S. Miller