kernel/git/stable/linux-stable.git/drivers/net/macvlan.c, branch linux-2.6.32.y

macvlan: Initialize vlan_features to turn on offload support.

2014-11-23T09:55:42+00:00

[ Upstream commit 081e83a78db9b0ae1f5eabc2dedecc865f509b98 ] Macvlan devices do not initialize vlan_features. As a result, any vlan devices configured on top of macvlans perform very poorly. Initialize vlan_features based on the vlan features of the lower-level device. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller Signed-off-by: Willy Tarreau

macvlan: fix gso_max_size setting

2009-11-23T22:18:53+00:00

gso_max_size must be set based on the value of the underlying device to support devices not using the full 64k. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller

macvlan: add multiqueue capability

2009-09-04T03:02:13+00:00

macvlan devices are currently not multi-queue capable. We can do that defining rtnl_link_ops method, get_tx_queues(), called from rtnl_create_link() This new method gets num_tx_queues/real_num_tx_queues from lower device. macvlan_get_tx_queues() is a copy of vlan_get_tx_queues(). Because macvlan_start_xmit() has to update netdev_queue stats only (and not dev->stats), I chose to change tx_errors/tx_aborted_errors accounting to tx_dropped, since netdev_queue structure doesnt define tx_errors / tx_aborted_errors. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

macvlan: Use compare_ether_addr_64bits()

2009-09-02T00:40:25+00:00

To speedup ether addresses compares, we can use compare_ether_addr_64bits() (all operands are guaranteed to be at least 8 bytes long) Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

netdev: convert pseudo drivers to netdev_tx_t

2009-09-01T08:13:40+00:00

These are all drivers that don't touch real hardware. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

drivers/net/macvlan.c: fix cloning of tagged VLAN interfaces

2009-06-11T09:32:39+00:00

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13348 akpm: the reporter disappeared, so I typed it in again. It is not possible to make clone of tagged VLAN interface to be used as mac-based vlan interfave. How reproducible: Use any 802.1q tagged vlan interface, e.g. eth2.700 and clone it: ip link add link eth2.700 address 00:04:75:cb:38:09 macvlan0 type macvlan ip link set dev macvlan0 up ip addr add 10.195.1.1/24 dev macvlan0 So far, so good. Now try to ping anything via macvlan0: ping 10.195.1.2 Actual results: For every attempted packet tx kernel writes to console: ------------[ cut here ]------------ WARNING: at net/8021q/vlan_dev.c:254 vlan_dev_hard_header+0x36/0x126 [8021q]() Hardware name: M22ES Modules linked in: arptable_filter arp_tables bridge veth macvlan arc4 ecb ppp_mppe ppp_async crc_ccitt ppp_generic slhc autofs4 sunrpc 8021q garp stp ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_tcpudp x_tables dm_mirror dm_region_hash dm_log dm_multipath dm_mod sbs sbshc lp floppy snd_intel8x0 joydev snd_seq_dummy snd_intel8x0m snd_ac97_codec ide_cd_mod ac97_bus snd_seq_oss cdrom snd_seq_midi_event serio_raw snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss parport_pc snd_pcm parport battery 8139cp snd_timer i2c_sis96x ac button snd rtc_cmos rtc_core 8139too soundcore rtc_lib mii i2c_core pcspkr snd_page_alloc pata_sis libata sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd [last unloaded: ip_tables] Pid: 0, comm: swapper Tainted: G W 2.6.29.3 #1 Call Trace: [] warn_slowpath+0x60/0x9f [] warn_slowpath+0x87/0x9f [] vlan_dev_hard_header+0x0/0x126 [8021q] [] vlan_dev_hard_header+0x36/0x126 [8021q] [] vlan_dev_hard_header+0x0/0x126 [8021q] [] macvlan_hard_header+0x3c/0x47 [macvlan] [] macvlan_hard_header+0x0/0x47 [macvlan] [] arp_create+0xef/0x1ff [] arp_send+0x3d/0x54 [] arp_solicit+0x16c/0x177 [] neigh_timer_handler+0x227/0x269 [] neigh_timer_handler+0x0/0x269 [] run_timer_softirq+0xf0/0x141 [] __do_softirq+0x76/0xf8 [] __do_softirq+0x0/0xf8 [] handle_level_irq+0x0/0xad [] irq_exit+0x35/0x62 [] do_IRQ+0xdf/0xf4 [] common_interrupt+0x27/0x2c [] default_idle+0x2a/0x3d [] cpu_idle+0x57/0x70 Macvlan driver always uses standard ethernet header length for all types of interface to which it is linked. This patch fixes this problem. Reported-by: Cc: Alan Cox Cc: "Rafael J. Wysocki" Cc: "David S. Miller" Cc: Stephen Hemminger Signed-off-by: Andrew Morton Signed-off-by: David S. Miller

net: convert unicast addr list

2009-05-30T05:12:32+00:00

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

net: release dst entry in dev_hard_start_xmit()

2009-05-19T05:19:19+00:00

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_fr Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

net: factor out ethtool invocation of vlan/macvlan drivers

2009-04-21T09:00:51+00:00

Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller

vlan/macvlan: fix NULL pointer dereferences in ethtool handlers

2009-04-17T22:59:23+00:00

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