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2013-07-31ax25.h: Remove extern from function prototypesJoe Perches1-106/+109
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Reflow modified prototypes to 80 columns. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31arp/neighbour.h: Remove extern from function prototypesJoe Perches2-65/+63
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Reflow modified prototypes to 80 columns. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31af_rxrpc.h: Remove extern from function prototypesJoe Perches1-19/+16
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Reflow modified prototypes to 80 columns. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31af_unix.h: Remove extern from function prototypesJoe Perches1-8/+8
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Reflow modified prototypes to 80 columns. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31addrconf.h: Remove extern function prototypesJoe Perches1-88/+72
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Reflow modified prototypes to 80 columns. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31fib_rules: add .suppress operationStefan Tomanek1-0/+4
This change adds a new operation to the fib_rules_ops struct; it allows the suppression of routing decisions if certain criteria are not met by its results. The first implemented constraint is a minimum prefix length added to the structures of routing rules. If a rule is added with a minimum prefix length >0, only routes meeting this threshold will be considered. Any other (more general) routing table entries will be ignored. When configuring a system with multiple network uplinks and default routes, it is often convinient to reference the main routing table multiple times - but omitting the default route. Using this patch and a modified "ip" utility, this can be achieved by using the following command sequence: $ ip route add table secuplink default via 10.42.23.1 $ ip rule add pref 100 table main prefixlength 1 $ ip rule add pref 150 fwmark 0xA table secuplink With this setup, packets marked 0xA will be processed by the additional routing table "secuplink", but only if no suitable route in the main routing table can be found. By using a minimal prefixlength of 1, the default route (/0) of the table "main" is hidden to packets processed by rule 100; packets traveling to destinations with more specific routing entries are processed as usual. Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31net: Remove extern from include/net/ scheduling prototypesJoe Perches4-101/+104
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Reflow modified prototypes to 80 columns. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31ndisc: Add missing inline to ndisc_addr_option_padJoe Perches1-1/+1
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31netem: Introduce skb_orphan_partial() helperEric Dumazet1-0/+1
Commit 547669d483e578 ("tcp: xps: fix reordering issues") added unexpected reorders in case netem is used in a MQ setup for high performance test bed. ETH=eth0 tc qd del dev $ETH root 2>/dev/null tc qd add dev $ETH root handle 1: mq for i in `seq 1 32` do tc qd add dev $ETH parent 1:$i netem delay 100ms done As all tcp packets are orphaned by netem, TCP stack believes it can set skb->ooo_okay on all packets. In order to allow producers to send more packets, we want to keep sk_wmem_alloc from reaching sk_sndbuf limit. We can do that by accounting one byte per skb in netem queues, so that TCP stack is not fooled too much. Tested: With above MQ/netem setup, scaling number of concurrent flows gives linear results and no reorders/retransmits lpq83:~# for n in 1 10 20 30 40 50 60 70 80 90 100 do echo -n "n:$n " ; ./super_netperf $n -H 10.7.7.84; done n:1 198.46 n:10 2002.69 n:20 4000.98 n:30 6006.35 n:40 8020.93 n:50 10032.3 n:60 12081.9 n:70 13971.3 n:80 16009.7 n:90 17117.3 n:100 17425.5 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31net: split rt_genid for ipv4 and ipv6fan.du3-5/+34
Current net name space has only one genid for both IPv4 and IPv6, it has below drawbacks: - Add/delete an IPv4 address will invalidate all IPv6 routing table entries. - Insert/remove XFRM policy will also invalidate both IPv4/IPv6 routing table entries even when the policy is only applied for one address family. Thus, this patch attempt to split one genid for two to cater for IPv4 and IPv6 separately in a fine granularity. Signed-off-by: Fan Du <fan.du@windriver.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31tcp: Remove unused tcpct declarations and commentsDmitry Popov1-4/+0
Remove declaration, 4 defines and confusing comment that are no longer used since 1a2c6181c4 ("tcp: Remove TCPCT"). Signed-off-by: Dmitry Popov <dp@highloadlab.com> Acked-by: Christoph Paasch <christoph.paasch@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31netfilter: nf_nat: change sequence number adjustments to 32 bitsPatrick McHardy3-5/+5
Using 16 bits is too small, when many adjustments happen the offsets might overflow and break the connection. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-07-31netfilter: nf_conntrack: remove duplicate code in ctnetlinkFlorian Westphal1-2/+1
ctnetlink contains copy-paste code from death_by_timeout. In order to avoid changing both places in upcoming event delivery patch, export death_by_timeout functionality and use it in the ctnetlink code. Based on earlier patch from Pablo Neira. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-07-31netfilter: tproxy: remove nf_tproxy_core.hFlorian Westphal1-206/+0
We've removed nf_tproxy_core.ko, so also remove its header. The lookup helpers are split and then moved to tproxy target/socket match. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-07-31netfilter: tproxy: remove nf_tproxy_core, keep tw sk assigned to skbFlorian Westphal1-4/+0
The module was "permanent", due to the special tproxy skb->destructor. Nowadays we have tcp early demux and its sock_edemux destructor in networking core which can be used instead. Thanks to early demux changes the input path now also handles "skb->sk is tw socket" correctly, so this no longer needs the special handling introduced with commit d503b30bd648b3cb4e5f50b65d27e389960cc6d9 (netfilter: tproxy: do not assign timewait sockets to skb->sk). Thus: - move assign_sock function to where its needed - don't prevent timewait sockets from being assigned to the skb - remove nf_tproxy_core. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-07-31netfilter: nf_conntrack: remove net_ratelimit() for LOG_INVALID()Patrick McHardy1-7/+0
Logging of invalid packets has to be explicitly enabled. Rate-limiting these messages is inconsistent with other netfilter logging features and makes debugging harder. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-07-31NFC: netlink: Rename CMD_FW_UPLOAD to CMD_FW_DOWNLOADSamuel Ortiz2-3/+3
Loading a firmware into a target is typically called firmware download, not firmware upload. So we rename the netlink API to NFC_CMD_FW_DOWNLOAD in order to avoid any terminology confusion from userspace. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-07-309p: client: remove unused code and any reference to "cancelled" functionAndi Shyti1-3/+0
This patch reverts commit 80b45261a0b263536b043c5ccfc4ba4fc27c2acc which was implementing a 'cancelled' functionality to notify that a cancelled request will not be replied. This implementation was not used anywhere and therefore removed. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-27pktgen: Add UDPCSUM flag to support UDP checksumsThomas Graf1-0/+1
UDP checksums are optional, hence pktgen has been omitting them in favour of performance. The optional flag UDPCSUM enables UDP checksumming. If the output device supports hardware checksumming the skb is prepared and marked CHECKSUM_PARTIAL, otherwise the checksum is generated in software. Signed-off-by: Thomas Graf <tgraf@suug.ch> Cc: Eric Dumazet <edumazet@google.com> Cc: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-27VSOCK: Move af_vsock.h and vsock_addr.h to include/netAsias He2-0/+205
This is useful for other VSOCK transport implemented outside the net/vmw_vsock/ directory to use these headers. Signed-off-by: Asias He <asias@redhat.com> Acked-by: Andy King <acking@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-27net/sctp: Refactor SCTP skb checksum computationJoe Stringer1-0/+15
This patch consolidates the SCTP checksum calculation code from various places to a single new function, sctp_compute_cksum(skb, offset). Signed-off-by: Joe Stringer <joe@wand.net.nz> Reviewed-by: Julian Anastasov <ja@ssi.bg> Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-24tcp: TCP_NOTSENT_LOWAT socket optionEric Dumazet2-6/+27
Idea of this patch is to add optional limitation of number of unsent bytes in TCP sockets, to reduce usage of kernel memory. TCP receiver might announce a big window, and TCP sender autotuning might allow a large amount of bytes in write queue, but this has little performance impact if a large part of this buffering is wasted : Write queue needs to be large only to deal with large BDP, not necessarily to cope with scheduling delays (incoming ACKS make room for the application to queue more bytes) For most workloads, using a value of 128 KB or less is OK to give applications enough time to react to POLLOUT events in time (or being awaken in a blocking sendmsg()) This patch adds two ways to set the limit : 1) Per socket option TCP_NOTSENT_LOWAT 2) A sysctl (/proc/sys/net/ipv4/tcp_notsent_lowat) for sockets not using TCP_NOTSENT_LOWAT socket option (or setting a zero value) Default value being UINT_MAX (0xFFFFFFFF), meaning this has no effect. This changes poll()/select()/epoll() to report POLLOUT only if number of unsent bytes is below tp->nosent_lowat Note this might increase number of sendmsg()/sendfile() calls when using non blocking sockets, and increase number of context switches for blocking sockets. Note this is not related to SO_SNDLOWAT (as SO_SNDLOWAT is defined as : Specify the minimum number of bytes in the buffer until the socket layer will pass the data to the protocol) Tested: netperf sessions, and watching /proc/net/protocols "memory" column for TCP With 200 concurrent netperf -t TCP_STREAM sessions, amount of kernel memory used by TCP buffers shrinks by ~55 % (20567 pages instead of 45458) lpq83:~# echo -1 >/proc/sys/net/ipv4/tcp_notsent_lowat lpq83:~# (super_netperf 200 -t TCP_STREAM -H remote -l 90 &); sleep 60 ; grep TCP /proc/net/protocols TCPv6 1880 2 45458 no 208 yes ipv6 y y y y y y y y y y y y y n y y y y y TCP 1696 508 45458 no 208 yes kernel y y y y y y y y y y y y y n y y y y y lpq83:~# echo 131072 >/proc/sys/net/ipv4/tcp_notsent_lowat lpq83:~# (super_netperf 200 -t TCP_STREAM -H remote -l 90 &); sleep 60 ; grep TCP /proc/net/protocols TCPv6 1880 2 20567 no 208 yes ipv6 y y y y y y y y y y y y y n y y y y y TCP 1696 508 20567 no 208 yes kernel y y y y y y y y y y y y y n y y y y y Using 128KB has no bad effect on the throughput or cpu usage of a single flow, although there is an increase of context switches. A bonus is that we hold socket lock for a shorter amount of time and should improve latencies of ACK processing. lpq83:~# echo -1 >/proc/sys/net/ipv4/tcp_notsent_lowat lpq83:~# perf stat -e context-switches ./netperf -H 7.7.7.84 -t omni -l 20 -c -i10,3 OMNI Send TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 7.7.7.84 () port 0 AF_INET : +/-2.500% @ 99% conf. Local Remote Local Elapsed Throughput Throughput Local Local Remote Remote Local Remote Service Send Socket Recv Socket Send Time Units CPU CPU CPU CPU Service Service Demand Size Size Size (sec) Util Util Util Util Demand Demand Units Final Final % Method % Method 1651584 6291456 16384 20.00 17447.90 10^6bits/s 3.13 S -1.00 U 0.353 -1.000 usec/KB Performance counter stats for './netperf -H 7.7.7.84 -t omni -l 20 -c -i10,3': 412,514 context-switches 200.034645535 seconds time elapsed lpq83:~# echo 131072 >/proc/sys/net/ipv4/tcp_notsent_lowat lpq83:~# perf stat -e context-switches ./netperf -H 7.7.7.84 -t omni -l 20 -c -i10,3 OMNI Send TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 7.7.7.84 () port 0 AF_INET : +/-2.500% @ 99% conf. Local Remote Local Elapsed Throughput Throughput Local Local Remote Remote Local Remote Service Send Socket Recv Socket Send Time Units CPU CPU CPU CPU Service Service Demand Size Size Size (sec) Util Util Util Util Demand Demand Units Final Final % Method % Method 1593240 6291456 16384 20.00 17321.16 10^6bits/s 3.35 S -1.00 U 0.381 -1.000 usec/KB Performance counter stats for './netperf -H 7.7.7.84 -t omni -l 20 -c -i10,3': 2,675,818 context-switches 200.029651391 seconds time elapsed Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Yuchung Cheng <ycheng@google.com> Acked-By: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-24net: add sk_stream_is_writeable() helperEric Dumazet1-0/+4
Several call sites use the hardcoded following condition : sk_stream_wspace(sk) >= sk_stream_min_wspace(sk) Lets use a helper because TCP_NOTSENT_LOWAT support will change this condition for TCP sockets. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Yuchung Cheng <ycheng@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-24net: sctp: trivial: update mailing list addressDaniel Borkmann9-9/+9
The SCTP mailing list address to send patches or questions to is linux-sctp@vger.kernel.org and not lksctp-developers@lists.sourceforge.net anymore. Therefore, update all occurences. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-22tcp: prefer packet timing to TS-ECR for RTTYuchung Cheng1-1/+0
Prefer packet timings to TS-ecr for RTT measurements when both sources are available. That's because broken middle-boxes and remote peer can return packets with corrupted TS ECR fields. Similarly most congestion controls that require RTT signals favor timing-based sources as well. Also check for bad TS ECR values to avoid RTT blow-ups. It has happened on production Web servers. Signed-off-by: Yuchung Cheng <ycheng@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-22tcp: consolidate SYNACK RTT samplingYuchung Cheng1-9/+0
The first patch consolidates SYNACK and other RTT measurement to use a central function tcp_ack_update_rtt(). A (small) bonus is now SYNACK RTT measurement happens after PAWS check, potentially reducing the impact of RTO seeding on bad TCP timestamps values. Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-22net: Provide a generic socket error queue delivery method for Tx time stamps.Richard Cochran1-0/+2
This patch moves the private error queue delivery function from the af_packet code to the core socket method. In this way, network layers only needing the error queue for transmit time stamping can share common code. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-16cfg80211/mac80211: use reduced txpower for 5 and 10 MHzSimon Wunderlich1-0/+27
Some regulations (like germany, but also FCC) express their transmission power limit in dBm/MHz or mW/MHz. To cope with that and be on the safe side, reduce the maximum power to half (10 MHz) or quarter (5 MHz) when operating on these reduced bandwidth channels. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16cfg80211/mac80211: get mandatory rates based on scan widthSimon Wunderlich1-1/+3
Mandatory rates for 5 and 10 MHz are different from the rates used for 20 MHz in 2.4 GHz mode, as they use OFDM only. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16mac80211: add radiotap flag and handling for 5/10 MHzSimon Wunderlich2-0/+8
Wireshark already defines radiotap channel flags for 5 and 10 MHz, so just use them in Linux radiotap too. Furthermore, add rx status flags to allow drivers to report when they received data on 5 or 10 MHz channels. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16mac80211/rc80211: add chandef to rate initializationSimon Wunderlich1-0/+2
5 and 10 MHz support needs to know the current operating channel width, add the chandef to the rate control API. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16nl80211: add scan width to bss and scan request structsSimon Wunderlich1-3/+51
To allow scanning and working with 5 MHz and 10 MHz BSS, extend the inform bss commands and add wrappers to take 5 and 10 MHz bss into account. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16cfg80211/nl80211: Add packet coalesce supportAmitkumar Karwar1-0/+54
In most cases, host that receives IPv4 and IPv6 multicast/broadcast packets does not do anything with these packets. Therefore the reception of these unwanted packets causes unnecessary processing and power consumption. Packet coalesce feature helps to reduce number of received interrupts to host by buffering these packets in firmware/hardware for some predefined time. Received interrupt will be generated when one of the following events occur. a) Expiration of hardware timer whose expiration time is set to maximum coalescing delay of matching coalesce rule. b) Coalescing buffer in hardware reaches it's limit. c) Packet doesn't match any of the configured coalesce rules. This patch adds set/get configuration support for packet coalesce. User needs to configure following parameters for creating a coalesce rule. a) Maximum coalescing delay b) List of packet patterns which needs to be matched c) Condition for coalescence. pattern 'match' or 'no match' Multiple such rules can be created. This feature needs to be advertised during driver initialization. Drivers are supposed to do required firmware/hardware settings based on user configuration. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> [fix kernel-doc, change free function, fix copy/paste error] Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16wireless: indent kernel-doc with tabsJohannes Berg2-20/+20
Almost everywhere tabs are used to indent continuation lines, replace the few places that use spaces. Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16nl80211: enable HT overrides for ibssSimon Wunderlich1-0/+5
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16cfg80211/nl80211: rename packet pattern related structures and enumsAmitkumar Karwar1-3/+3
Currently packet patterns and it's enum/structures are used only for WoWLAN feature. As we intend to reuse them for new feature packet coalesce, they are renamed in this patch. Older names are kept for backward compatibility purpose. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds1-14/+16
Pull networking fixes from David Miller: "Just a bunch of small fixes and tidy ups: 1) Finish the "busy_poll" renames, from Eliezer Tamir. 2) Fix RCU stalls in IFB driver, from Ding Tianhong. 3) Linearize buffers properly in tun/macvtap zerocopy code. 4) Don't crash on rmmod in vxlan, from Pravin B Shelar. 5) Spinlock used before init in alx driver, from Maarten Lankhorst. 6) A sparse warning fix in bnx2x broke TSO checksums, fix from Dmitry Kravkov. 7) Dummy and ifb driver load failure paths can oops, fixes from Tan Xiaojun and Ding Tianhong. 8) Correct MTU calculations in IP tunnels, from Alexander Duyck. 9) Account all TCP retransmits in SNMP stats properly, from Yuchung Cheng. 10) atl1e and via-rhine do not handle DMA mapping failures properly, from Neil Horman. 11) Various equal-cost multipath route fixes in ipv6 from Hannes Frederic Sowa" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (36 commits) ipv6: only static routes qualify for equal cost multipathing via-rhine: fix dma mapping errors atl1e: fix dma mapping warnings tcp: account all retransmit failures usb/net/r815x: fix cast to restricted __le32 usb/net/r8152: fix integer overflow in expression net: access page->private by using page_private net: strict_strtoul is obsolete, use kstrtoul instead drivers/net/ieee802154: don't use devm_pinctrl_get_select_default() in probe drivers/net/ethernet/cadence: don't use devm_pinctrl_get_select_default() in probe drivers/net/can/c_can: don't use devm_pinctrl_get_select_default() in probe net/usb: add relative mii functions for r815x net/tipc: use %*phC to dump small buffers in hex form qlcnic: Adding Maintainers. gre: Fix MTU sizing check for gretap tunnels pkt_sched: sch_qfq: remove forward declaration of qfq_update_agg_ts pkt_sched: sch_qfq: improve efficiency of make_eligible gso: Update tunnel segmentation to support Tx checksum offload inet: fix spacing in assignment ifb: fix oops when loading the ifb failed ...
2013-07-11Merge tag 'for-linus-3.11-merge-window-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fsLinus Torvalds1-0/+6
Pull second round of 9p patches from Eric Van Hensbergen: "Several of these patches were rebased in order to correct style issues. Only stylistic changes were made versus the patches which were in linux-next for two weeks. The rebases have been in linux-next for 3 days and have passed my regressions. The bulk of these are RDMA fixes and improvements. There's also some additions on the extended attributes front to support some additional namespaces and a new option for TCP to force allocation of mount requests from a priviledged port" * tag 'for-linus-3.11-merge-window-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: fs/9p: Remove the unused variable "err" in v9fs_vfs_getattr() 9P: Add cancelled() to the transport functions. 9P/RDMA: count posted buffers without a pending request 9P/RDMA: Improve error handling in rdma_request 9P/RDMA: Do not free req->rc in error handling in rdma_request() 9P/RDMA: Use a semaphore to protect the RQ 9P/RDMA: Protect against duplicate replies 9P/RDMA: increase P9_RDMA_MAXSIZE to 1MB 9pnet: refactor struct p9_fcall alloc code 9P/RDMA: rdma_request() needs not allocate req->rc 9P: Fix fcall allocation for rdma fs/9p: xattr: add trusted and security namespaces net/9p: add privport option to 9p tcp transport
2013-07-10net: rename busy poll socket op and globalsEliezer Tamir1-4/+4
Rename LL_SO to BUSY_POLL_SO Rename sysctl_net_ll_{read,poll} to sysctl_busy_{read,poll} Fix up users of these variables. Fix documentation for sysctl. a patch for the socket.7 man page will follow separately, because of limitations of my mail setup. Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-10net: rename ll methods to busy-pollEliezer Tamir1-10/+12
Rename ndo_ll_poll to ndo_busy_poll. Rename sk_mark_ll to sk_mark_napi_id. Rename skb_mark_ll to skb_mark_napi_id. Correct all useres of these functions. Update comments and defines in include/net/busy_poll.h Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-10net: rename include/net/ll_poll.h to include/net/busy_poll.hEliezer Tamir1-0/+0
Rename the file and correct all the places where it is included. Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-09net/fs: change busy poll time accountingEliezer Tamir1-37/+18
Suggested by Linus: Changed time accounting for busy-poll: - Make it microsecond based. - Use unsigned longs. - Revert back to use time_after instead of time_in_range. Reorder poll/select busy loop conditions: - Clear busy_flag after one time we can't busy-poll. - Only init busy_end if we actually are going to busy-poll. Added one more missing need_resched() test. Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-08net: rename low latency sockets functions to busy pollEliezer Tamir1-22/+24
Rename functions in include/net/ll_poll.h to busy wait. Clarify documentation about expected power use increase. Rename POLL_LL to POLL_BUSY_LOOP. Add need_resched() testing to poll/select busy loops. Note, that in select and poll can_busy_poll is dynamic and is updated continuously to reflect the existence of supported sockets with valid queue information. Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-079P: Add cancelled() to the transport functions.Simon Derr1-0/+3
RDMA needs to post a buffer for each incoming reply. Hence it needs to keep count of these and needs to be aware of whether a flushed request has received a reply or not. This patch adds the cancelled() callback to the transport modules. It is called when RFLUSH has been received and that the corresponding request will never receive a reply. Signed-off-by: Simon Derr <simon.derr@bull.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2013-07-07net/9p: add privport option to 9p tcp transportJim Garlick1-0/+3
If the privport option is specified, the tcp transport binds local address to a reserved port before connecting to the 9p server. In some cases when 9P AUTH cannot be implemented, this is better than nothing. Signed-off-by: Jim Garlick <garlick@llnl.gov> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2013-07-03net: sock: fix TCP_SKB_MIN_TRUESIZEEric Dumazet1-1/+1
commit eea86af6b1e18d ("net: sock: adapt SOCK_MIN_RCVBUF and SOCK_MIN_SNDBUF") forgot the sk_buff alignment taken into account in __alloc_skb() : skb->truesize = SKB_TRUESIZE(size); While above commit fixed the sender issue, the receiver is still dropping the second packet (on loopback device), because the receiver socket can not really hold two skbs : First packet truesize already is above sk_rcvbuf, so even TCP coalescing cannot help. On a typical 64bit build, each tcp skb truesize is 2304, instead of 2272 Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Daniel Borkmann <dborkman@redhat.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Tested-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-03net: gre: move GSO functions to gre_offloadDaniel Borkmann1-0/+4
Similarly to TCP/UDP offloading, move all related GRE functions to gre_offload.c to make things more explicit and similar to the rest of the code. Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-02net: lls fix build with allnoconfigEliezer Tamir1-3/+3
correct placeholder declarations to prevent build breakage when !CONFIG_NET_LL_RX_POLL Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-02net: convert lls to use time_in_range()Eliezer Tamir1-9/+17
Time in range will fail safely if we move to a different cpu with an extremely large clock skew. Add time_in_range64() and convert lls to use it. changelog: v2 - fixed double call to sched_clock in can_poll_ll - fixed checkpatchisms Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-02ipv6: call udp_push_pending_frames when uncorking a socket with AF_INET pending dataHannes Frederic Sowa1-0/+1
We accidentally call down to ip6_push_pending_frames when uncorking pending AF_INET data on a ipv6 socket. This results in the following splat (from Dave Jones): skbuff: skb_under_panic: text:ffffffff816765f6 len:48 put:40 head:ffff88013deb6df0 data:ffff88013deb6dec tail:0x2c end:0xc0 dev:<NULL> ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:126! invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: dccp_ipv4 dccp 8021q garp bridge stp dlci mpoa snd_seq_dummy sctp fuse hidp tun bnep nfnetlink scsi_transport_iscsi rfcomm can_raw can_bcm af_802154 appletalk caif_socket can caif ipt_ULOG x25 rose af_key pppoe pppox ipx phonet irda llc2 ppp_generic slhc p8023 psnap p8022 llc crc_ccitt atm bluetooth +netrom ax25 nfc rfkill rds af_rxrpc coretemp hwmon kvm_intel kvm crc32c_intel snd_hda_codec_realtek ghash_clmulni_intel microcode pcspkr snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hwdep usb_debug snd_seq snd_seq_device snd_pcm e1000e snd_page_alloc snd_timer ptp snd pps_core soundcore xfs libcrc32c CPU: 2 PID: 8095 Comm: trinity-child2 Not tainted 3.10.0-rc7+ #37 task: ffff8801f52c2520 ti: ffff8801e6430000 task.ti: ffff8801e6430000 RIP: 0010:[<ffffffff816e759c>] [<ffffffff816e759c>] skb_panic+0x63/0x65 RSP: 0018:ffff8801e6431de8 EFLAGS: 00010282 RAX: 0000000000000086 RBX: ffff8802353d3cc0 RCX: 0000000000000006 RDX: 0000000000003b90 RSI: ffff8801f52c2ca0 RDI: ffff8801f52c2520 RBP: ffff8801e6431e08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88022ea0c800 R13: ffff88022ea0cdf8 R14: ffff8802353ecb40 R15: ffffffff81cc7800 FS: 00007f5720a10740(0000) GS:ffff880244c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000005862000 CR3: 000000022843c000 CR4: 00000000001407e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Stack: ffff88013deb6dec 000000000000002c 00000000000000c0 ffffffff81a3f6e4 ffff8801e6431e18 ffffffff8159a9aa ffff8801e6431e90 ffffffff816765f6 ffffffff810b756b 0000000700000002 ffff8801e6431e40 0000fea9292aa8c0 Call Trace: [<ffffffff8159a9aa>] skb_push+0x3a/0x40 [<ffffffff816765f6>] ip6_push_pending_frames+0x1f6/0x4d0 [<ffffffff810b756b>] ? mark_held_locks+0xbb/0x140 [<ffffffff81694919>] udp_v6_push_pending_frames+0x2b9/0x3d0 [<ffffffff81694660>] ? udplite_getfrag+0x20/0x20 [<ffffffff8162092a>] udp_lib_setsockopt+0x1aa/0x1f0 [<ffffffff811cc5e7>] ? fget_light+0x387/0x4f0 [<ffffffff816958a4>] udpv6_setsockopt+0x34/0x40 [<ffffffff815949f4>] sock_common_setsockopt+0x14/0x20 [<ffffffff81593c31>] SyS_setsockopt+0x71/0xd0 [<ffffffff816f5d54>] tracesys+0xdd/0xe2 Code: 00 00 48 89 44 24 10 8b 87 d8 00 00 00 48 89 44 24 08 48 8b 87 e8 00 00 00 48 c7 c7 c0 04 aa 81 48 89 04 24 31 c0 e8 e1 7e ff ff <0f> 0b 55 48 89 e5 0f 0b 55 48 89 e5 0f 0b 55 48 89 e5 0f 0b 55 RIP [<ffffffff816e759c>] skb_panic+0x63/0x65 RSP <ffff8801e6431de8> This patch adds a check if the pending data is of address family AF_INET and directly calls udp_push_ending_frames from udp_v6_push_pending_frames if that is the case. This bug was found by Dave Jones with trinity. (Also move the initialization of fl6 below the AF_INET check, even if not strictly necessary.) Cc: Dave Jones <davej@redhat.com> Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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