- 05 Jan, 2012 23 commits
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Eric Dumazet authored
SFQ as implemented in Linux is very limited, with at most 127 flows and limit of 127 packets. [ So if 127 flows are active, we have one packet per flow ] This patch brings to SFQ following features to cope with modern needs. - Ability to specify a smaller per flow limit of inflight packets. (default value being at 127 packets) - Ability to have up to 65408 active flows (instead of 127) - Ability to have head drops instead of tail drops (to drop old packets from a flow) Example of use : No more than 20 packets per flow, max 8000 flows, max 20000 packets in SFQ qdisc, hash table of 65536 slots. tc qdisc add ... sfq \ flows 8000 \ depth 20 \ headdrop \ limit 20000 \ divisor 65536 Ram usage : 2 bytes per hash table entry (instead of previous 1 byte/entry) 32 bytes per flow on 64bit arches, instead of 384 for QFQ, so much better cache hit ratio. Signed-off-by:Eric Dumazet <eric.dumazet@gmail.com> CC: Dave Taht <dave.taht@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Michael Chan authored
When a bnx2x device encounters parity errors, it will not respond to all SPQ messages. As a result, the shutdown sequence before reset can take a long time as the ulp drivers (bnx2i/bnx2fc) have to wait for timeout of all such messages. To improve this scenario, when bnx2x returns error on the SPQ, we'll send an immediate response to the ulp drivers to avoid such lengthy timeouts. Adjust the return code of relevant functions to return error only if the message cannot be sent on the SPQ so that we'll generate an error completion to the ulp drivers. Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
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Michael Chan authored
because bnx2x frees the old and allocates new memory during chip reset. Signed-off-by:
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Hagen Paul Pfeifer authored
Not now, but it looks you are correct. q->qdisc is NULL until another additional qdisc is attached (beside tfifo). See 50612537. The following patch should work. From: Hagen Paul Pfeifer <hagen@jauu.net> netem: catch NULL pointer by updating the real qdisc statistic Reported-by:
Vijay Subramanian <subramanian.vijay@gmail.com> Signed-off-by:
Hagen Paul Pfeifer <hagen@jauu.net> Acked-by:
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stephen hemminger authored
This fixes a several sparse warnings. * the __iomem tag was being used incorrectly (needs to be a prefix) * several variables should have been static since local to one file * the firmware was not being forwared declared and was const one place and not the other Signed-off-by:Stephen Hemminger <shemminger@vyatta.com> Signed-off-by:
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stephen hemminger authored
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stephen hemminger authored
Make local function static, make ethtool_ops const. Compile tested only. Signed-off-by:
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stephen hemminger authored
Auditing all usage of ethtool_ops found several drivers that are not declaring the struct const when it should be. Signed-off-by:
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stephen hemminger authored
All tables of function pointers should be const to make hacks more difficult. Compile tested only. Signed-off-by:
Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by:
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stephen hemminger authored
All tables of function pointers should be const to make hacks more difficult. Compile tested only. Signed-off-by:
Ian Campbell <ian.campbell@citrix.com> Signed-off-by:
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Mike Waychison authored
Currently, the refill path for RX buffers will always allocate the buffers as GFP_ATOMIC, even if we are in process context. This will fail to apply memory pressure as the worker thread will not contribute to the freeing of memory. Fix this by changing add_recvbuf_small to use the gfp variant allocator, __netdev_alloc_skb_ip_align(). Signed-off-by:
Mike Waychison <mikew@google.com> Acked-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Neerav Parikh authored
This patch implements support for ndo_get_fcoe_hbainfo() call in the ixgbe driver. This function will be called by the FCoE protocol stack to obtain device specific information from the underlying device configured to do FCoE. Signed-off-by:
Neerav Parikh <Neerav.Parikh@intel.com> Tested-by:
Ross Brattain <ross.b.brattain@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by:
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Neerav Parikh authored
This adds a new ndo_get_fcoe_hbainfo() call in net_device_ops for FCoE protocol stack. If supported by the underlying device, the FCoE protocol stack will call this to get device specific information from the underlying device. This information will then be utilized by the FCoE protocol stack to register Fiber Channel HBA attributes with the Fiber Channel Management Service via Fabric Device Management Interface (FDMI) as per the T11 FC-GS specification. Changes in v2: - As per comments from David Miller aligning the parameters of the ndo_get_fcoe_hbainfo() Signed-off-by:
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Koki Sanagi authored
According to 82576_Datasheet.pdf, PHY setting is lost after PHY power down. So resetting PHY is needed when recovering from PHY power down to set a default setting to PHY register. Owing to this lack, NIC doesn't link up in some rare situation. Signed-off-by:
Koki Sanagi <sanagi.koki@jp.fujitsu.com> Tested-by:
Aaron Brown <aaron.f.brown@intel.com> Signed-off-by:
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Yan, Zheng authored
Use the runtime power management framework to add basic runtime PM support to the igb driver. Namely, make the driver suspend the device when the link is off and set it up for generating a wakeup event after the link has been detected again. This feature is disabled by default. Based on e1000e's runtime PM code. Changes since v1: Don't suspend the device when shutting down the interface. Avoid race between runtime suspending and ethtool operations. Signed-off-by:
Zheng Yan <zheng.z.yan@intel.com> Tested-by:
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Eric Dumazet authored
This adds support for byte queue limits (BQL) Since this driver collects bytes count in 'bytecount' field, use it also in igb_tx_map() Signed-off-by:
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Florian Fainelli authored
A global variable is currently used to hold the virtual address of the CE4100 MDIO base register address. Store the address in the e1000_hw structure and update macros accordingly. Signed-off-by:
Florian Fainelli <ffainelli@freebox.fr> Tested-by:
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Florian Fainelli authored
We are not unmapping ce4100_gbe_mdio_base_virt in exit path in case we are running on a CE4100 adapter, fix that. Signed-off-by:
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Jesse Brandeburg authored
As reported by Steven Rostedt, e1000 has a lockdep splat added during the recent merge window. The issue is that cancel_delayed_work is called while holding our private mutex. There is no reason that I can see to hold the mutex during pci shutdown, it was more just paranoia that I put the mutex_lock around the call to e1000_down. In a quick survey lots of drivers handle locking differently when being called by the pci layer. The assumption here is that we don't need the mutexes' protection in this function because the driver could not be unloaded while in the shutdown handler which is only called at reboot or poweroff. Reported-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by:
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John W. Linville authored
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/b43legacy/dma.c
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John W. Linville authored
The ath6kl driver is causing build failures when the ath6kl bits are not built as modules. A better fix is forthcoming in a future release, but for now lets revert the problematic code. This reverts the following commits: fde57764 d70385a2 59d954ddSigned-off-by:
John W. Linville <linville@tuxdriver.com>
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Yogesh Ashok Powar authored
Signed-off-by:
Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by:
Nishant Sarmukadam <nishants@marvell.com> Signed-off-by:
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- 04 Jan, 2012 17 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: fix CAN MAINTAINERS SCM tree type mwifiex: fix crash during simultaneous scan and connect b43: fix regression in PIO case ath9k: Fix kernel panic in AR2427 in AP mode CAN MAINTAINERS update net: fsl: fec: fix build for mx23-only kernel sch_qfq: fix overflow in qfq_update_start() Revert "Bluetooth: Increase HCI reset timeout in hci_dev_do_close"
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Al Viro authored
bitmap size sanity checks should be done *before* allocating ->s_root; there their cleanup on failure would be correct. As it is, we do iput() on root inode, but leak the root dentry... Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Acked-by:
Josh Boyer <jwboyer@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Oleg Nesterov authored
This is the temporary simple fix for 3.2, we need more changes in this area. 1. do_signal_stop() assumes that the running untraced thread in the stopped thread group is not possible. This was our goal but it is not yet achieved: a stopped-but-resumed tracee can clone the running thread which can initiate another group-stop. Remove WARN_ON_ONCE(!current->ptrace). 2. A new thread always starts with ->jobctl = 0. If it is auto-attached and this group is stopped, __ptrace_unlink() sets JOBCTL_STOP_PENDING but JOBCTL_STOP_SIGMASK part is zero, this triggers WANR_ON(!signr) in do_jobctl_trap() if another debugger attaches. Change __ptrace_unlink() to set the artificial SIGSTOP for report. Alternatively we could change ptrace_init_task() to copy signr from current, but this means we can copy it for no reason and hide the possible similar problems. Acked-by:
Tejun Heo <tj@kernel.org> Cc: <stable@kernel.org> [3.1] Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Signed-off-by:
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Oleg Nesterov authored
Test-case: int main(void) { int pid, status; pid = fork(); if (!pid) { for (;;) { if (!fork()) return 0; if (waitpid(-1, &status, 0) < 0) { printf("ERR!! wait: %m\n"); return 0; } } } assert(ptrace(PTRACE_ATTACH, pid, 0,0) == 0); assert(waitpid(-1, NULL, 0) == pid); assert(ptrace(PTRACE_SETOPTIONS, pid, 0, PTRACE_O_TRACEFORK) == 0); do { ptrace(PTRACE_CONT, pid, 0, 0); pid = waitpid(-1, NULL, 0); } while (pid > 0); return 1; } It fails because ->real_parent sees its child in EXIT_DEAD state while the tracer is going to change the state back to EXIT_ZOMBIE in wait_task_zombie(). The offending commit is 823b018e which moved the EXIT_DEAD check, but in fact we should not blame it. The original code was not correct as well because it didn't take ptrace_reparented() into account and because we can't really trust ->ptrace. This patch adds the additional check to close this particular race but it doesn't solve the whole problem. We simply can't rely on ->ptrace in this case, it can be cleared if the tracer is multithreaded by the exiting ->parent. I think we should kill EXIT_DEAD altogether, we should always remove the soon-to-be-reaped child from ->children or at least we should never do the DEAD->ZOMBIE transition. But this is too complex for 3.2. Reported-and-tested-by:Denys Vlasenko <vda.linux@googlemail.com> Tested-by:
Lukasz Michalik <lmi@ift.uni.wroc.pl> Acked-by:
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
* git://git.samba.org/sfrench/cifs-2.6: [CIFS] default ntlmv2 for cifs mount delayed to 3.3 cifs: fix bad buffer length check in coalesce_t2
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Mihai Maruseac authored
This ensures a linear behaviour when filling /proc/net/if_inet6 thus making ifconfig run really fast on IPv6 only addresses. In fact, with this patch and the IPv4 one sent a while ago, ifconfig will run in linear time regardless of address type. IPv4 related patch: f04565dd dev: use name hash for dev_seq_ops ... Some statistics (running ifconfig > /dev/null on a different setup): iface count / IPv6 no-patch time / IPv6 patched time / IPv4 time ---------------------------------------------------------------- 6250 | 0.23 s | 0.13 s | 0.11 s 12500 | 0.62 s | 0.28 s | 0.22 s 25000 | 2.91 s | 0.57 s | 0.46 s 50000 | 11.37 s | 1.21 s | 0.94 s 128000 | 86.78 s | 3.05 s | 2.54 s Signed-off-by:
Mihai Maruseac <mmaruseac@ixiacom.com> Cc: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by:
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Florian Fainelli authored
checkpatch.pl complained about the line exceding 80 columns, and the comment was actually on the same line as the code, fix that. Signed-off-by:
Florian Fainelli <florian@openwrt.org> Signed-off-by:
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Florian Fainelli authored
instead of __attribute__((__aligned(size)__)) Signed-off-by:
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Florian Fainelli authored
Bit 1 is the reset bit of the MAC status machine register, define and use it. Signed-off-by:
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Florian Fainelli authored
MAC_RST bit is already defined, use it instead of 0x1 where applicable. Signed-off-by:
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Florian Fainelli authored
Define more MCR0-register bits and use them in place of the bits values. Signed-off-by:
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Florian Fainelli authored
Since the conversion to phylib (3831861b: r6040: implement phylib) some PHY-related variables and definitions are now useless, remove them. Signed-off-by:
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Florian Fainelli authored
We should use an unique MDIO bus name which does not clash with anything else in the system like the Fixed MDIO bus. The bus is now named: r6040-<card number> which is unique in the system. Reported-by:
Vladimir Kolpakov <vova.kolpakov@gmail.com> Signed-off-by:
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Neil Horman authored
Recently Dave noticed that a test we did in ipv6_add_addr to see if we next hop route for the interface we're adding an addres to was wrong (see commit 7ffbcecb). for one, it never triggers, and two, it was completely wrong to begin with. This test was meant to cover this section of RFC 4429: 3.3 Modifications to RFC 2462 Stateless Address Autoconfiguration * (modifies section 5.5) A host MAY choose to configure a new address as an Optimistic Address. A host that does not know the SLLAO of its router SHOULD NOT configure a new address as Optimistic. A router SHOULD NOT configure an Optimistic Address. This patch should bring us into proper compliance with the above clause. Since we only add a SLAAC address after we've received a RA which may or may not contain a source link layer address option, we can pass a pointer to that option to addrconf_prefix_rcv (which may be null if the option is not present), and only set the optimistic flag if the option was found in the RA. Change notes: (v2) modified the new parameter to addrconf_prefix_rcv to be a bool rather than a pointer to make its use more clear as per request from davem. Signed-off-by:
Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Signed-off-by:
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Mohammed Shafi Shajakhan authored
ieee80211_offchannel_enable_all_ps function is no longer used and looks like its logic is extensively handled in ieee80211_offchannel_stop_vifs Signed-off-by:
Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by:
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Yogesh Ashok Powar authored
In case of firmware crash, reload the firmware and reconfigure it by triggering ieee80211_hw_restart; mac80211 utility function. V2 Addressed following comments from Lennert: - Stop the queues during reload - Removed atomic_t declaration for hw_restart - Extend the firmware reload support for sta firmware as well - Other misc changes Signed-off-by:
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