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2015-11-19net: move napi_hash[] into read mostly sectionEric Dumazet2-1/+5
We do not often add/delete a napi context. Moving napi_hash[] into read mostly section avoids potential false sharing. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19net: add netif_tx_napi_add()Eric Dumazet12-16/+38
netif_tx_napi_add() is a variant of netif_napi_add() It should be used by drivers that use a napi structure to exclusively poll TX. We do not want to add this kind of napi in napi_hash[] in following patches, adding generic busy polling to all NAPI drivers. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19net: move skb_mark_napi_id() into core networking stackEric Dumazet13-16/+4
We would like to automatically provide busy polling support to all NAPI drivers, without them having to implement anything. skb_mark_napi_id() can be called from napi_gro_receive() and napi_get_frags(). Few drivers are still calling skb_mark_napi_id() because they use netif_receive_skb(). They should eventually call napi_gro_receive() instead. I will leave this to drivers maintainers. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19mlx4: remove mlx4_en_low_latency_recv()Eric Dumazet4-198/+2
Busy polling can now be handled in generic NAPI poll infrastructure. This removes complexity and fast path overhead : mlx4 used two spin_lock()/spin_unlock() pair per napi->poll() call in mlx4_en_cq_lock_napi()/mlx4_en_cq_unlock_napi() Tested: Without busy polling : lpaa23:~# echo 0 >/proc/sys/net/core/busy_read lpaa24:~# echo 0 >/proc/sys/net/core/busy_read lpaa23:~# ./netperf -H lpaa24 -t TCP_RR MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to lpaa24.prod.google.com () port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 47330.78 With busy polling : lpaa23:~# echo 70 >/proc/sys/net/core/busy_read lpaa24:~# echo 70 >/proc/sys/net/core/busy_read lpaa23:~# ./netperf -H lpaa24 -t TCP_RR MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to lpaa24.prod.google.com () port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 97643.55 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19bnx2x: remove bnx2x_low_latency_recv() supportEric Dumazet4-167/+2
Switch to native NAPI polling, as this reduces overhead and complexity. Normal path is faster, since one cmpxchg() is not anymore requested, and busy polling with the NAPI polling has same performance. Tested: lpk50:~# cat /proc/sys/net/core/busy_read 70 lpk50:~# nstat >/dev/null;./netperf -H lpk55 -t TCP_RR;nstat MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to lpk55.prod.google.com () port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 40095.07 16384 87380 IpInReceives 401062 0.0 IpInDelivers 401062 0.0 IpOutRequests 401079 0.0 TcpActiveOpens 7 0.0 TcpPassiveOpens 3 0.0 TcpAttemptFails 3 0.0 TcpEstabResets 5 0.0 TcpInSegs 401036 0.0 TcpOutSegs 401052 0.0 TcpOutRsts 38 0.0 UdpInDatagrams 26 0.0 UdpOutDatagrams 27 0.0 Ip6OutNoRoutes 1 0.0 TcpExtDelayedACKs 1 0.0 TcpExtTCPPrequeued 98 0.0 TcpExtTCPDirectCopyFromPrequeue 98 0.0 TcpExtTCPHPHits 4 0.0 TcpExtTCPHPHitsToUser 98 0.0 TcpExtTCPPureAcks 5 0.0 TcpExtTCPHPAcks 101 0.0 TcpExtTCPAbortOnData 6 0.0 TcpExtBusyPollRxPackets 400832 0.0 TcpExtTCPOrigDataSent 400983 0.0 IpExtInOctets 21273867 0.0 IpExtOutOctets 21261254 0.0 IpExtInNoECTPkts 401064 0.0 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19mlx5: support napi_complete_done()Eric Dumazet3-14/+13
A NAPI poll handler should return number of RX packets processed, instead of 0 / budget. This allows proper busy poll accounting through LINUX_MIB_BUSYPOLLRXPACKETS SNMP counter. napi_complete_done() allows /sys/class/net/ethX/gro_flush_timeout to be used for finer GRO aggregation control. Tested: Enabled busy polling, and checked TcpExtBusyPollRxPackets counter is increasing. echo 70 >/proc/sys/net/core/busy_read nstat >/dev/null netperf -H target -t TCP_RR >/dev/null nstat | grep TcpExtBusyPollRxPackets TcpExtBusyPollRxPackets 490958 0.0 Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19mlx5: add busy polling supportEric Dumazet2-0/+8
It is now easy to add busy polling support to a NAPI driver, with very little impact on normal input path. This patch serves as a reference implementation. Note: A followup patch will add proper napi_complete_done() in mlx5, so that LINUX_MIB_BUSYPOLLRXPACKETS snmp counter is properly handled. Tested: Normal TCP_RR results without busy polling : lpk51:~# echo 0 >/proc/sys/net/core/busy_read lpk52:~# echo 0 >/proc/sys/net/core/busy_read lpk51:~# ./netperf -H 192.168.4.52 -t TCP_RR -l 10 MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.4.52 () port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 53509.49 16384 87380 Now enable busy polling : lpk51:~# echo 70 >/proc/sys/net/core/busy_read lpk52:~# echo 70 >/proc/sys/net/core/busy_read lpk51:~# ./netperf -H 192.168.4.52 -t TCP_RR -l 10 MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.4.52 () port 0 AF_INET : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 97530.92 16384 87380 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19net: network drivers no longer need to implement ndo_busy_poll()Eric Dumazet1-5/+20
Instead of having to implement complex ndo_busy_poll() method, drivers can simply rely on NAPI poll logic. Busy polling gains are mainly coming from polling itself, not on exact details on how we poll the device. ndo_busy_poll() if implemented can avoid touching napi state, but it adds extra synchronization between normal napi->poll() and busy poll handler, slowing down the common path (non busy polling) with extra atomic operations. In practice few drivers ever got busy poll because of the complexity. We could go one step further, and make busy polling available for all NAPI drivers, but this would require that all netif_napi_del() calls are done in process context so that we can call synchronize_rcu(). Full audit would be required. Before this is done, a driver still needs to call : - skb_mark_napi_id() for each skb provided to the stack. - napi_hash_add() and napi_hash_del() to allocate a napi_id per napi struct. - Make sure RCU grace period is respected after napi_hash_del() before memory containing napi structure is freed. Followup patch implements busy poll for mlx5 driver as an example. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19net: allow BH servicing in sk_busy_loop()Eric Dumazet1-11/+7
Instead of blocking BH in whole sk_busy_loop(), block them only around ->ndo_busy_poll() calls. This has many benefits. 1) allow tunneled traffic to use busy poll as well as native traffic. Tunnels handlers usually call netif_rx() and depend on net_rx_action() being run (from sofirq handler) 2) allow RFS/RPS being used (sending IPI to other cpus if needed) 3) use the 'lets burn cpu cycles' budget to do useful work (like TX completions, timers, RCU callbacks...) 4) reduce BH latencies, making busy poll a better citizen. Tested: Tested with SIT tunnel lpaa5:~# echo 0 >/proc/sys/net/core/busy_read lpaa5:~# ./netperf -H 2002:af6:786::1 -t TCP_RR MIGRATED TCP REQUEST/RESPONSE TEST from ::0 (::) port 0 AF_INET6 to 2002:af6:786::1 () port 0 AF_INET6 : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 37373.93 16384 87380 Now enable busy poll on both hosts lpaa5:~# echo 70 >/proc/sys/net/core/busy_read lpaa6:~# echo 70 >/proc/sys/net/core/busy_read lpaa5:~# ./netperf -H 2002:af6:786::1 -t TCP_RR MIGRATED TCP REQUEST/RESPONSE TEST from ::0 (::) port 0 AF_INET6 to 2002:af6:786::1 () port 0 AF_INET6 : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 58314.77 16384 87380 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19net: un-inline sk_busy_loop()Eric Dumazet3-55/+49
There is really little gain from inlining this big function. We'll soon make it even bigger in following patches. This means we no longer need to export napi_by_id() Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19mlx4: mlx4_en_low_latency_recv() called with BH disabledEric Dumazet1-5/+7
mlx4_en_low_latency_recv() is called with BH disabled, as other ndo_busy_poll() methods. No need for spin_lock_bh()/spin_unlock_bh() Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-19net: better skb->sender_cpu and skb->napi_id cohabitationEric Dumazet2-20/+16
skb->sender_cpu and skb->napi_id share a common storage, and we had various bugs about this. We had to call skb_sender_cpu_clear() in some places to not leave a prior skb->napi_id and fool netdev_pick_tx() As suggested by Alexei, we could split the space so that these errors can not happen. 0 value being reserved as the common (not initialized) value, let's reserve [1 .. NR_CPUS] range for valid sender_cpu, and [NR_CPUS+1 .. ~0U] for valid napi_id. This will allow proper busy polling support over tunnels. Signed-off-by: Eric Dumazet <edumazet@google.com> Suggested-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-18be2net: remove local variable 'status'Ivan Vecera1-4/+2
The lancer_cmd_get_file_len() uses lancer_cmd_read_object() to get the current size of registers for ethtool registers dump. Returned status value is stored but not checked. The check itself is not necessary as the data_read output variable is initialized to 0 and status variable can be removed. Signed-off-by: Ivan Vecera <ivecera@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-18net: hisilicon: fix binding document of mdiohuangdaode1-1/+6
This patch explains the occasion of "hisilcon,mdio" and "hisilicon,hns-mdio" according to Arnd's comments. and reformat it according to comments from Rob<robh@kernel.org>. Signed-off-by: huangdaode <huangdaode@hisilicon.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-18net ipv4: use preferred log methodsBastian Stender4-59/+44
Replace printk calls with preferred unconditional log method calls to keep kernel messages clean. Added newline to "too small MTU" message. Signed-off-by: Bastian Stender <bst@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-18Merge branch 'for-linus' of ↵Linus Torvalds29-278/+247
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Assorted bug fixes, the mlock2 system call gets added, and one improvement. The boot from dasd devices is now possible from a wider range of devices" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390: remove SALIPL loader s390: wire up mlock2 system call s390: remove g5 elf platform support s390: avoid cache aliasing under z/VM and KVM s390/sclp: _sclp_wait_int(): retain full PSW mask s390/zcrypt: Fix initialisation when zcrypt is built-in s390/zcrypt: Fix kernel crash on systems without AP bus support s390: add support for ipl devices in subchannel sets > 0 s390/ipl: fix out of bounds access in scpdata_write s390/pci_dma: improve debugging of errors during dma map s390/pci_dma: handle dma table failures s390/pci_dma: unify label of invalid translation table entries s390/syscalls: remove system call number calculation s390/cio: simplify css_generate_pgid s390/diag: add a s390 prefix to the diagnose trace point s390/head: fix error message on unsupported hardware
2015-11-18Merge tag 'hwmon-for-linus-v4.4-rc2' of ↵Linus Torvalds3-11/+14
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: "Fix build issues in scpi and ina2xx drivers, update scpi driver to support recent firmware, and fix an uninitialized variable warning in applesmc driver" * tag 'hwmon-for-linus-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (scpi) skip unsupported sensors properly hwmon: (scpi) add thermal-of dependency hwmon : (applesmc) Fix uninitialized variables warnings hwmon: (ina2xx) Fix build issue by selecting REGMAP_I2C
2015-11-18mac80211_hwsim: move Kconfig entry for sorting alphabeticallyKalle Valo1-13/+13
mac80211_hwsim was not placed alphabetically correctly in menuconfig, fix that. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18ath: unify Kconfig with other vendorsKalle Valo3-11/+12
Change menuconfig to config to keep the Kconfig entries unified. Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18ti: unify Kconfig with other vendorsKalle Valo5-12/+15
Rename WL_TI to WLAN_VENDOR_TI to match with other vendor configs and make sure that it's enabled by default in new configs. Convert menuconfigs to regular configs to unify the wireless drivers menuconfig. Part of reorganising wireless drivers directory and Kconfig. Also remove WLCORE dependency to WL_TI. It should not be needed as WLCORE is already under if WLAN_VENDOR_TI. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18mediatek: unify Kconfig with other vendorsKalle Valo3-9/+12
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18rt2x00: move under ralink vendor directoryKalle Valo51-4/+20
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18rsi: add vendor Kconfig entryKalle Valo3-3/+17
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18realtek: create separate Kconfig fileKalle Valo4-10/+24
Add new a Kconfig file and a vendor config for realtek. Also update MAINTAINERS which we missed to do when earlier moving rtlwifi. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18prism54: move under intersil vendor directoryKalle Valo21-23/+22
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18orinoco: move under intersil vendor directoryKalle Valo36-4/+3
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18p54: move under intersil vendor directoryKalle Valo22-4/+3
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18hostap: move under intersil vendor directoryKalle Valo25-3/+20
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18zd1211rw: move under zydas vendor directoryKalle Valo20-3/+5
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18zd1201: move under zydas vendor directoryKalle Valo7-22/+37
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18mwl8k: move under marvell vendor directoryKalle Valo6-12/+12
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18mwifiex: move under marvell vendor directoryKalle Valo53-4/+3
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18libertas_tf: move under marvell vendor directoryKalle Valo12-21/+21
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18libertas: move under marvell vendor directoryKalle Valo36-3/+20
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18iwlwifi: move under intel vendor directoryKalle Valo127-3/+4
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18iwlegacy: move under intel directoryKalle Valo25-3/+4
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18ipw2x00: move under intel vendor directoryKalle Valo18-5/+21
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18cw1200: move under st vendor directoryKalle Valo32-3/+20
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18brcm80211: move under broadcom vendor directoryKalle Valo119-12/+12
Part of reorganising wireless drivers directory and Kconfig. Note that I had to edit Makefiles from subdirectories to use the new location. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18b43legacy: move under broadcom vendor directoryKalle Valo30-3/+3
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18b43: move under broadcom vendor directoryKalle Valo68-3/+20
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18atmel: move under atmel vendor directoryKalle Valo11-50/+65
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18airo: move under cisco vendor directoryKalle Valo7-45/+60
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds84-3650/+1036
Pull networking fixes from David Miller: 1) Fix list tests in netfilter ingress support, from Florian Westphal. 2) Fix reversal of input and output interfaces in ingress hook invocation, from Pablo Neira Ayuso. 3) We have a use after free in r8169, caught by Dave Jones, fixed by Francois Romieu. 4) Splice use-after-free fix in AF_UNIX frmo Hannes Frederic Sowa. 5) Three ipv6 route handling bug fixes from Martin KaFai Lau: a) Don't create clone routes not managed by the fib6 tree b) Don't forget to check expiration of DST_NOCACHE routes. c) Handle rt->dst.from == NULL properly. 6) Several AF_PACKET fixes wrt transport header setting and SKB protocol setting, from Daniel Borkmann. 7) Fix thunder driver crash on shutdown, from Pavel Fedin. 8) Several Mellanox driver fixes (max MTU calculations, use of correct DMA unmap in TX path, etc.) from Saeed Mahameed, Tariq Toukan, Doron Tsur, Achiad Shochat, Eran Ben Elisha, and Noa Osherovich. 9) Several mv88e6060 DSA driver fixes (wrong bit definitions for certain registers, etc.) from Neil Armstrong. 10) Make sure to disable preemption while updating per-cpu stats of ip tunnels, from Jason A. Donenfeld. 11) Various ARM64 bpf JIT fixes, from Yang Shi. 12) Flush icache properly in ARM JITs, from Daniel Borkmann. 13) Fix masking of RX and TX interrupts in ravb driver, from Masaru Nagai. 14) Fix netdev feature propagation for devices not implementing ->ndo_set_features(). From Nikolay Aleksandrov. 15) Big endian fix in vmxnet3 driver, from Shrikrishna Khare. 16) RAW socket code increments incorrect SNMP counters, fix from Ben Cartwright-Cox. 17) IPv6 multicast SNMP counters are bumped twice, fix from Neil Horman. 18) Fix handling of VLAN headers on stacked devices when REORDER is disabled. From Vlad Yasevich. 19) Fix SKB leaks and use-after-free in ipvlan and macvlan drivers, from Sabrina Dubroca. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (83 commits) MAINTAINERS: Update Mellanox's Eth NIC driver entries net/core: revert "net: fix __netdev_update_features return.." and add comment af_unix: take receive queue lock while appending new skb rtnetlink: fix frame size warning in rtnl_fill_ifinfo net: use skb_clone to avoid alloc_pages failure. packet: Use PAGE_ALIGNED macro packet: Don't check frames_per_block against negative values net: phy: Use interrupts when available in NOLINK state phy: marvell: Add support for 88E1540 PHY arm64: bpf: make BPF prologue and epilogue align with ARM64 AAPCS macvlan: fix leak in macvlan_handle_frame ipvlan: fix use after free of skb ipvlan: fix leak in ipvlan_rcv_frame vlan: Do not put vlan headers back on bridge and macvlan ports vlan: Fix untag operations of stacked vlans with REORDER_HEADER off via-velocity: unconditionally drop frames with bad l2 length ipg: Remove ipg driver dl2k: Add support for IP1000A-based cards snmp: Remove duplicate OUTMCAST stat increment net: thunder: Check for driver data in nicvf_remove() ...
2015-11-17MAINTAINERS: Update Mellanox's Eth NIC driver entriesOr Gerlitz1-1/+9
Eugenia (Jenny) Emantayev is replacing Amir Vadai as the mlx4 Ethernet driver maintainer. Saeed Mahameed is assigned to maintain mlx5 Eth functionality. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-17net/core: revert "net: fix __netdev_update_features return.." and add commentNikolay Aleksandrov1-1/+4
This reverts commit 00ee59271777 ("net: fix __netdev_update_features return on ndo_set_features failure") and adds a comment explaining why it's okay to return a value other than 0 upon error. Some drivers might actually change flags and return an error so it's better to fire a spurious notification rather than miss these. CC: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-17af_unix: take receive queue lock while appending new skbHannes Frederic Sowa1-1/+4
While possibly in future we don't necessarily need to use sk_buff_head.lock this is a rather larger change, as it affects the af_unix fd garbage collector, diag and socket cleanups. This is too much for a stable patch. For the time being grab sk_buff_head.lock without disabling bh and irqs, so don't use locked skb_queue_tail. Fixes: 869e7c62486e ("net: af_unix: implement stream sendpage support") Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Reported-by: Eric Dumazet <edumazet@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-17rtnetlink: fix frame size warning in rtnl_fill_ifinfoHannes Frederic Sowa1-122/+152
Fix the following warning: CC net/core/rtnetlink.o net/core/rtnetlink.c: In function ‘rtnl_fill_ifinfo’: net/core/rtnetlink.c:1308:1: warning: the frame size of 2864 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ by splitting up the huge rtnl_fill_ifinfo into some smaller ones, so we don't have the huge frame allocations at the same time. Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-17net: use skb_clone to avoid alloc_pages failure.Martin Zhang1-1/+1
1. new skb only need dst and ip address(v4 or v6). 2. skb_copy may need high order pages, which is very rare on long running server. Signed-off-by: Junwei Zhang <linggao.zjw@alibaba-inc.com> Signed-off-by: Martin Zhang <martinbj2008@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-17packet: Use PAGE_ALIGNED macroTobias Klauser1-1/+1
Use PAGE_ALIGNED(...) instead of open-coding it. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.0) at 2025-10-01 14:05:18 +0300