- 03 Sep, 2009 2 commits
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Eric Dumazet authored
Christoph Lameter pointed out that packet drops at qdisc level where not accounted in SNMP counters. Only if application sets IP_RECVERR, drops are reported to user (-ENOBUFS errors) and SNMP counters updated. IP_RECVERR is used to enable extended reliable error message passing, but these are not needed to update system wide SNMP stats. This patch changes things a bit to allow SNMP counters to be updated, regardless of IP_RECVERR being set or not on the socket. Example after an UDP tx flood # netstat -s ... IP: 1487048 outgoing packets dropped ... Udp: ... SndbufErrors: 1487048 send() syscalls, do however still return an OK status, to not break applications. Note : send() manual page explicitly says for -ENOBUFS error : "The output queue for a network interface was full. This generally indicates that the interface has stopped sending, but may be caused by transient congestion. (Normally, this does not occur in Linux. Packets are just silently dropped when a device queue overflows.) " This is not true for IP_RECVERR enabled sockets : a send() syscall that hit a qdisc drop returns an ENOBUFS error. Many thanks to Christoph, David, and last but not least, Alexey ! Signed-off-by:Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
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:
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- 02 Sep, 2009 38 commits
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Neil Horman authored
It was recently pointed out to me that the last_rx field of the net_device structure wasn't updated regularly. In fact only the bonding driver really uses it currently. Since the drop_monitor code relies on the last_rx field to detect drops on recevie in hardware, We need to find a more reliable way to rate limit our drop checks (so that we don't check for drops on every frame recevied, which would be inefficient. This patch makes a last_rx timestamp that is private to the drop monitor code and is updated for every device that we track. Signed-off-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
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Vivek Natarajan authored
Signed-off-by:
Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by:
John W. Linville <linville@tuxdriver.com>
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Bob Copeland authored
The find_ie() function uses a size_t for the len parameter, and directly uses len as a loop variable. If any received packets are malformed, it is possible for the decrease of len to overflow, and since the result is unsigned, the loop will not terminate. Change it to a signed int so the loop conditional works for negative values. This fixes the following soft lockup: [38573.102007] BUG: soft lockup - CPU#0 stuck for 61s! [phy0:2230] [38573.102007] Modules linked in: aes_i586 aes_generic fuse af_packet ipt_REJECT xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state iptable_filter ip_tables x_tables acpi_cpufreq binfmt_misc dm_mirror dm_region_hash dm_log dm_multipath dm_mod kvm_intel kvm uinput i915 arc4 ecb drm snd_hda_codec_idt ath5k snd_hda_intel hid_apple mac80211 usbhid appletouch snd_hda_codec snd_pcm ath cfg80211 snd_timer i2c_algo_bit ohci1394 video snd processor ieee1394 rfkill ehci_hcd sg sky2 backlight snd_page_alloc uhci_hcd joydev output ac thermal button battery sr_mod applesmc cdrom input_polldev evdev unix [last unloaded: scsi_wait_scan] [38573.102007] irq event stamp: 2547724535 [38573.102007] hardirqs last enabled at (2547724534): [<c1002ffc>] restore_all_notrace+0x0/0x18 [38573.102007] hardirqs last disabled at (2547724535): [<c10038f4>] apic_timer_interrupt+0x28/0x34 [38573.102007] softirqs last enabled at (92950144): [<c103ab48>] __do_softirq+0x108/0x210 [38573.102007] softirqs last disabled at (92950274): [<c1348e74>] _spin_lock_bh+0x14/0x80 [38573.102007] [38573.102007] Pid: 2230, comm: phy0 Tainted: G W (2.6.31-rc7-wl #8) MacBook1,1 [38573.102007] EIP: 0060:[<f8ea2d50>] EFLAGS: 00010292 CPU: 0 [38573.102007] EIP is at cmp_ies+0x30/0x180 [cfg80211] [38573.102007] EAX: 00000082 EBX: 00000000 ECX: ffffffc1 EDX: d8efd014 [38573.102007] ESI: ffffff7c EDI: 0000004d EBP: eee2dc50 ESP: eee2dc3c [38573.102007] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [38573.102007] CR0: 8005003b CR2: d8efd014 CR3: 01694000 CR4: 000026d0 [38573.102007] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [38573.102007] DR6: ffff0ff0 DR7: 00000400 [38573.102007] Call Trace: [38573.102007] [<f8ea2f8d>] cmp_bss+0xed/0x100 [cfg80211] [38573.102007] [<f8ea33e4>] cfg80211_bss_update+0x84/0x410 [cfg80211] [38573.102007] [<f8ea3884>] cfg80211_inform_bss_frame+0x114/0x180 [cfg80211] [38573.102007] [<f97255ff>] ieee80211_bss_info_update+0x4f/0x180 [mac80211] [38573.102007] [<f972b118>] ieee80211_rx_bss_info+0x88/0xf0 [mac80211] [38573.102007] [<f9739297>] ? ieee802_11_parse_elems+0x27/0x30 [mac80211] [38573.102007] [<f972b224>] ieee80211_rx_mgmt_probe_resp+0xa4/0x1c0 [mac80211] [38573.102007] [<f972bc59>] ieee80211_sta_rx_queued_mgmt+0x919/0xc50 [mac80211] [38573.102007] [<c1009707>] ? sched_clock+0x27/0xa0 [38573.102007] [<c1009707>] ? sched_clock+0x27/0xa0 [38573.102007] [<c105ffd0>] ? mark_held_locks+0x60/0x80 [38573.102007] [<c1348be5>] ? _spin_unlock_irqrestore+0x55/0x70 [38573.102007] [<c134baa5>] ? sub_preempt_count+0x85/0xc0 [38573.102007] [<c1348bce>] ? _spin_unlock_irqrestore+0x3e/0x70 [38573.102007] [<c12c1c0f>] ? skb_dequeue+0x4f/0x70 [38573.102007] [<f972c021>] ieee80211_sta_work+0x91/0xb80 [mac80211] [38573.102007] [<c1009707>] ? sched_clock+0x27/0xa0 [38573.102007] [<c134baa5>] ? sub_preempt_count+0x85/0xc0 [38573.102007] [<c10479af>] worker_thread+0x18f/0x320 [38573.102007] [<c104794e>] ? worker_thread+0x12e/0x320 [38573.102007] [<c1348be5>] ? _spin_unlock_irqrestore+0x55/0x70 [38573.102007] [<f972bf90>] ? ieee80211_sta_work+0x0/0xb80 [mac80211] [38573.102007] [<c104cbb0>] ? autoremove_wake_function+0x0/0x50 [38573.102007] [<c1047820>] ? worker_thread+0x0/0x320 [38573.102007] [<c104c854>] kthread+0x84/0x90 [38573.102007] [<c104c7d0>] ? kthread+0x0/0x90 [38573.102007] [<c1003ab7>] kernel_thread_helper+0x7/0x10 Cc: stable@kernel.org Signed-off-by:
Bob Copeland <me@bobcopeland.com> Signed-off-by:
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Luis R. Rodriguez authored
We can just display this upon enabling mac80211 with an 'if MAC80211 != n' check. Cc: Johannes Berg <johannes@sipsolutions.net> Signed-off-by:
Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by:
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Luis R. Rodriguez authored
Refer to the wireless wiki for more information. Signed-off-by:
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Luis R. Rodriguez authored
Change it to a menuconfig to give it some documentation, to refer users to our wireless wiki for extra resources and documentation. It seems our wiki is still obscure to some. Signed-off-by:
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Stephen Hemminger authored
All instances of file_operations should be const. Signed-off-by:
Stephen Hemminger <shemminger@vyatta.com> Signed-off-by:
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Stephen Hemminger authored
The function block inet_connect_sock_af_ops contains no data make it constant. Signed-off-by:
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Stephen Hemminger authored
Signed-off-by:
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Stephen Hemminger authored
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Stephen Hemminger authored
No need to put ethtool_ops in data, they should be const. Signed-off-by:
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Matt Carlson authored
This patch updates the tg3 version to 3.102. Signed-off-by:
Matt Carlson <mcarlson@broadcom.com> Reviewed-by:
Benjamin Li <benli@broadcom.com> Signed-off-by:
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Matt Carlson authored
The 5717 is a dual port chip that has a shared MDIO bus design. While it is impossible for one function to interface with the wrong phy, that function still needs to know which MDIO bus address to use when interfacing with its own phy. This patch adds code to determine which MDIO bus address to use. Signed-off-by:
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Matt Carlson authored
This patch adds NVRAM detection routines for the 5717. Signed-off-by:
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Matt Carlson authored
This patch adds the 5717 asic rev. Signed-off-by:
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Matt Carlson authored
When RSS is enabled, the status block format changes slightly. The "rx_jumbo_consumer", "reserved", and "rx_mini_consumer" members get mapped to the other three rx return ring producer indexes. This patch introduces a new per-interrupt member which identifies which location in the status block a particular vector should look for return ring updates. Signed-off-by:
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Matt Carlson authored
When multivector RSS is enabled, the first interrupt vector is only used to report link interrupts and error conditions. This patch changes the code so that rx and tx ring resources are not allocated for this vector. Signed-off-by:
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Matt Carlson authored
This patch adds code needed to enable RSS. Signed-off-by:
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Matt Carlson authored
This patch adds code to tune the coalescing parameters for the other msix vectors. Signed-off-by:
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Matt Carlson authored
This patch adds code to enable and disable the rest of the NAPI instances. Signed-off-by:
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Matt Carlson authored
This patch exposes the additional transmit rings to the kernel and makes the necessary modifications to transmit, open, and close paths. Signed-off-by:
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Matt Carlson authored
This patch fixes up two spots that need attention now that msix support has been added. Signed-off-by:
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Matt Carlson authored
This patch adds code to assign status block, tx producer ring and rx return ring resources needed for the other interrupt vectors. Signed-off-by:
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Matt Carlson authored
The 5717 assigns mailbox locations to interrupt vectors in a rather non-intuitive way. (Much of the complexity stems from legacy compatibility issues.) This patch implements the assignment scheme. Signed-off-by:
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Matt Carlson authored
This patch adds MSI-X support. Signed-off-by:
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Matt Carlson authored
This patch adds code to support multiple interrupt vectors around the kernel's interrupt API. Signed-off-by:
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Matt Carlson authored
This patch moves most of the chip ring setup logic into a separate function. This will make it easier to verify the multi ring setup changes. Signed-off-by:
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Matt Carlson authored
Each interrupt vector has its own bit in the host coalescing register to force that vector's status block to be updated and generate an interrupt. This patch adds a member to the per-interrupt structure that records which bit belongs to that vector. Signed-off-by:
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Matt Carlson authored
This patch inlines the code of tg3_cond_int() into the function's only callsite. This prep work makes the following patch cleaner. Signed-off-by:
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David S. Miller authored
Conflicts: drivers/net/yellowfin.c
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Eric Dumazet authored
qdisc drops should be notified to IP_RECVERR enabled sockets, as done in IPV4. Signed-off-by:
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Xiao Guangrong authored
The net_dev of backlog napi is NULL, like below: __get_cpu_var(softnet_data).backlog.dev == NULL So, we should check it in napi tracepoint's probe function Acked-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
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David S. Miller authored
These are full of unresolved problems, mainly that conversions don't work 1-1 from hrtimers to tasklet_hrtimers because unlike hrtimers tasklets can't be killed from softirq context. And when a qdisc gets reset, that's exactly what we need to do here. We'll work this out in the net-next-2.6 tree and if warranted we'll backport that work to -stable. This reverts the following 3 changesets: a2cb6a4d ("pkt_sched: Fix bogon in tasklet_hrtimer changes.") 38acce2d ("pkt_sched: Convert CBQ to tasklet_hrtimer.") ee5f9757 ("pkt_sched: Convert qdisc_watchdog to tasklet_hrtimer") Signed-off-by:
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David S. Miller authored
Noticed by Michal Simek. Signed-off-by: -
Jarek Poplawski authored
After commit 2b85a34e (net: No more expensive sock_hold()/sock_put() on each tx) sk_free() frees socks conditionally and depends on sk_wmem_alloc being set e.g. in sock_init_data(). But in some cases sk_free() is called earlier, usually after other alloc errors. Fix is to move sk_wmem_alloc initialization from sock_init_data() to sk_alloc() itself. Signed-off-by:
Jarek Poplawski <jarkao2@gmail.com> Signed-off-by:
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Stephen Hemminger authored
These tables are never modified at runtime. Move to read-only section. Signed-off-by:
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roel kluin authored
aup->mii_bus->irq allocation may fail, prevent a dereference of NULL. Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Acked-by:
Florian Fainelli <florian@openwrt.org> Signed-off-by:
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