- 12 Nov, 2009 2 commits
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Anton Vorontsov authored
NAPI drivers try to recycle SKBs in their polling routine, but we generally don't know the context in which the polling will be called, and the skb recycling itself may require IRQs to be enabled. This patch adds irqs_disabled() test to the skb_recycle_check() routine, so that we'll not let the drivers hit the skb recycling path with IRQs disabled. As a side effect, this patch actually disables skb recycling for some [broken] drivers. E.g. gianfar driver grabs an irqsave spinlock during TX ring processing, and then tries to recycle an skb, and that caused the following badness: nf_conntrack version 0.5.0 (1008 buckets, 4032 max) ------------[ cut here ]------------ Badness at kernel/softirq.c:143 NIP: c003e3c4 LR: c423a528 CTR: c003e344 ... NIP [c003e3c4] local_bh_enable+0x80/0xc4 LR [c423a528] destroy_conntrack+0xd4/0x13c [nf_conntrack] Call Trace: [c15d1b60] [c003e32c] local_bh_disable+0x1c/0x34 (unreliable) [c15d1b70] [c423a528] destroy_conntrack+0xd4/0x13c [nf_conntrack] [c15d1b80] [c02c6370] nf_conntrack_destroy+0x3c/0x70 Signed-off-by:David S. Miller <davem@davemloft.net>
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David S. Miller authored
Reported by Stephen Rothwell: -------------------- Today's linux-next build (x86_64 allmodconfig) produced this warning: net/ipv6/addrconf.c: In function 'inet6_dump_ifinfo': net/ipv6/addrconf.c:3833: warning: unused variable 'err' Introduced by commit 84d2697d ("ipv6: speedup inet6_dump_ifinfo()"). -------------------- Signed-off-by:
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- 11 Nov, 2009 34 commits
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John W. Linville authored
I may have botched my merge conflict resolution instructions for Dave... Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
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David S. Miller authored
Conflicts: drivers/net/wireless/iwlwifi/iwl-1000.c drivers/net/wireless/iwlwifi/iwl-6000.c drivers/net/wireless/iwlwifi/iwl-core.h
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stephen hemminger authored
Use new function to avoid doing read_lock(). Signed-off-by:
Stephen Hemminger <shemminger@vyatta.com> Acked-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by:
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stephen hemminger authored
This also needs to be optimized for large number of devices. Signed-off-by:
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stephen hemminger authored
When showing device statistics use RCU rather than read_lock(&dev_base_lock) Compile tested only. Signed-off-by:
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stephen hemminger authored
This is similar to other cases where for_each_netdev_rcu can be used when gathering information. By inspection, don't have platform or cross-build environment to validate. Signed-off-by:
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stephen hemminger authored
Use RCU to walk list of network devices in qdisc dump. This could be optimized for large number of devices. Signed-off-by:
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stephen hemminger authored
Do not need to use read_lock(&dev_base_lock), use RCU instead. Signed-off-by:
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stephen hemminger authored
This adds an RCU macro for continuing search, useful for some network devices like vlan. Signed-off-by:
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Brian Haley authored
Change udp6_portaddr_hash() to use ipv6_addr_v4mapped() inline instead of ipv6_addr_type(). Signed-off-by:
Brian Haley <brian.haley@hp.com> Acked-by:
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Eric Dumazet authored
Use for_each_netdev_rcu() and dont lock dev_base_lock anymore Signed-off-by:
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Herbert Xu authored
This patch rearranges the SIT DF bit handling using the new IPIP DF code. The only externally visible effect should be the case where PMTU is enabled and the MTU is exactly 1280 bytes. In this case the previous code would send packets out with DF off while the new code would set the DF bit. This is inline with RFC 4213. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Thanks, Signed-off-by:
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Eric Dumazet authored
Apparently, inet6_dump_addr() is not able to handle more than 64 ipv6 addresses per device. We must break from inner loops in case skb is full, or else cursor is put at the end of list. Signed-off-by:
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Eric Dumazet authored
When handling large number of netdevice, inet6_dump_ifinfo() is very slow because it has O(N^2) complexity. Instead of scanning one single list, we can use the 256 sub lists of the dev_index hash table, and RCU lookups. Signed-off-by:
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Cyrill Gorcunov authored
Use guard DECLARE_SOCKADDR in a few more places which allow us to catch if the structure copied back is too big. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by:
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Ben Hutchings authored
Some usbnet drivers update link state while others do not due to hardware limitations. Add a flag to distinguish those that do, and set the link down initially for their devices. This is intended to fix this bug: http://bugs.debian.org/444043Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Signed-off-by:
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Marin Mitov authored
Use DMA_BIT_MASK(44) instead of deprecated DMA_44BIT_MASK Signed-off-by:
Marin Mitov <mitov@issp.bas.bg> Signed-off-by:
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Eric Dumazet authored
UDP bind() can be O(N^2) in some pathological cases. Thanks to secondary hash tables, we can make it O(N) Signed-off-by:
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Eilon Greenstein authored
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Eilon Greenstein <eilong@broadcom.com> Signed-off-by:
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Eilon Greenstein authored
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Eilon Greenstein authored
Failing to allocate MSI-X vectors is not an error and should not be printed as such Signed-off-by:
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Eilon Greenstein authored
Making sure that whenever the FW/HW is configured for GSO, it is also configured to CSUM offload Signed-off-by:
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Rémi Denis-Courmont authored
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Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by:
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Rémi Denis-Courmont authored
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Ben Hutchings authored
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Ben Hutchings authored
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Ben Hutchings authored
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Ben Hutchings authored
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Ben Hutchings authored
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Ben Hutchings authored
Replace run-time string formatting with preprocessor string manipulation. Signed-off-by:
Divy Le Ray <divy@chelsio.com> Signed-off-by:
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Ben Hutchings authored
Replace run-time string formatting with preprocessor string manipulation. Signed-off-by:
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Ben Hutchings authored
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Ben Hutchings authored
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Ben Hutchings authored
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Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
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- 10 Nov, 2009 4 commits
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Wey-Yi Guy authored
Turn on RTS/CTS for HT to prevent uCode TX fifo underrun This is fix for http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2103Signed-off-by:
Wey-Yi Guy <wey-yi.w.guy@intel.com> Tested-by:
Jiajia Zheng <jiajia.zheng@intel.com> Signed-off-by:
Reinette Chatre <reinette.chatre@intel.com> Cc: stable@kernel.org Signed-off-by:
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Wey-Yi Guy authored
When 802.11g was introduced, we had RTS/CTS and CTS-to-Self protection mechanisms. In an HT Beacon, HT stations use the "Operating Mode" field in the HT Information Element to determine whether or not to use protection. The Operating Mode field has 4 possible settings: 0-3: Mode 0: If all stations in the BSS are 20/40 MHz HT capable, or if the BSS is 20/40 MHz capable, or if all stations in the BSS are 20 MHz HT stations in a 20 MHz BSS Mode 1: used if there are non-HT stations or APs using the primary or secondary channels Mode 2: if only HT stations are associated in the BSS and at least one 20 MHz HT station is associated. Mode 3: used if one or more non-HT stations are associated in the BSS. When in operating modes 1 or 3, and the Use_Protection field is 1 in the Beacon's ERP IE, all HT transmissions must be protected using RTS/CTS or CTS-to-Self. By default, CTS-to-self is the preferred protection mechanism for less overhead and higher throughput; but using the full RTS/CTS will better protect the inner exchange from interference, especially in highly-congested environment. For 6000 series WIFI NIC, RTS/CTS protection mechanism is the recommended choice for HT traffic based on the HW design. Signed-off-by:
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Bing Zhao authored
Configuration of wake-on-lan for unicast, multicast, broadcast, physical activity was not working. Kernel panic issue was there when user tries to disable WOL. Fixed them. Signed-off-by:
Amitkumar Karwar <akarwar@marvell.com> Signed-off-by:
Bing Zhao <bzhao@marvell.com> Signed-off-by:
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Bing Zhao authored
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