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2010-09-02drivers/net: avoid some skb->ip_summed initializationsEric Dumazet
fresh skbs have ip_summed set to CHECKSUM_NONE (0) We can avoid setting again skb->ip_summed to CHECKSUM_NONE in drivers. Introduce skb_checksum_none_assert() helper so that we keep this assertion documented in driver sources. Change most occurrences of : skb->ip_summed = CHECKSUM_NONE; by : skb_checksum_none_assert(skb); Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-02Merge branch 'for-davem' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
2010-09-02Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
2010-09-02net: Improve comments in include/linux/phy.hPeter Meerwald
Correct state range of PHY bus addresses (i.e. 0-31) in comment, make spelling of PHY consistent in comments. Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-01skge: add GRO supportEric Dumazet
- napi_gro_flush() is exported from net/core/dev.c, to avoid an irq_save/irq_restore in the packet receive path. - use napi_gro_receive() instead of netif_receive_skb() - use napi_gro_flush() before calling __napi_complete() - turn on NETIF_F_GRO by default - Tested on a Marvell 88E8001 Gigabit NIC Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-31net: add a comment on netdev->last_rxEric Dumazet
As some driver authors seem to reintroduce dev->last_rx use, add a comment to strongly discourage this. Since commit 6cf3f41e6c0 (bonding, net: Move last_rx update into bonding recv logic), network drivers dont need to update last_rx themselves, unless they use this field to implement a timeout. Not updating last_rx helps not dirtying a cache line, improving performance in SMP. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-30TCP: update initial windows according to RFC 5681Gerrit Renker
This updates the use of larger initial windows, as originally specified in RFC 3390, to use the newer IW values specified in RFC 5681, section 3.1. The changes made in RFC 5681 are: a) the setting now is more clearly specified in units of segments (as the comments by John Heffner emphasized, this was not very clear in RFC 3390); b) for connections with 1095 < SMSS <= 2190 there is now a change: - RFC 3390 says that IW <= 4380, - RFC 5681 says that IW = 3 * SMSS <= 6570. Since RFC 3390 is older and "only" proposed standard, whereas the newer RFC 5681 is already draft standard, it seems preferable to use the newer IW variant. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-30tcp/dccp: Consolidate common code for RFC 3390 conversionGerrit Renker
This patch consolidates initial-window code common to TCP and CCID-2: * TCP uses RFC 3390 in a packet-oriented manner (tcp_input.c) and * CCID-2 uses RFC 3390 in packet-oriented manner (RFC 4341). Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-30tcp: Add TCP_USER_TIMEOUT socket option.Jerry Chu
This patch provides a "user timeout" support as described in RFC793. The socket option is also needed for the the local half of RFC5482 "TCP User Timeout Option". TCP_USER_TIMEOUT is a TCP level socket option that takes an unsigned int, when > 0, to specify the maximum amount of time in ms that transmitted data may remain unacknowledged before TCP will forcefully close the corresponding connection and return ETIMEDOUT to the application. If 0 is given, TCP will continue to use the system default. Increasing the user timeouts allows a TCP connection to survive extended periods without end-to-end connectivity. Decreasing the user timeouts allows applications to "fail fast" if so desired. Otherwise it may take upto 20 minutes with the current system defaults in a normal WAN environment. The socket option can be made during any state of a TCP connection, but is only effective during the synchronized states of a connection (ESTABLISHED, FIN-WAIT-1, FIN-WAIT-2, CLOSE-WAIT, CLOSING, or LAST-ACK). Moreover, when used with the TCP keepalive (SO_KEEPALIVE) option, TCP_USER_TIMEOUT will overtake keepalive to determine when to close a connection due to keepalive failure. The option does not change in anyway when TCP retransmits a packet, nor when a keepalive probe will be sent. This option, like many others, will be inherited by an acceptor from its listener. Signed-off-by: H.K. Jerry Chu <hkchu@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-29net: fix datapath typoSimon Horman
Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-27mac80211: support runtime interface type changesJohannes Berg
Add support to mac80211 for changing the interface type even when the interface is UP, if the driver supports it. To achieve this * add a new driver callback for switching, * split some of the interface up/down code out into new functions (do_open/do_stop), and * maintain an own __SDATA_RUNNING bit that will not be set during interface type, so that any other code doesn't use the interface. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-27cfg80211: allow changing port control protocolJohannes Berg
Some vendor specified mechanisms for 802.1X-style functionality use a different protocol than EAP (even if EAP is vendor-extensible). Allow setting the ethertype for the protocol when a driver has support for this. The default if unspecified is EAP, of course. Note: This is suitable only for station mode, not for AP implementation. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-27mac80211: allow scan to complete from any contextJohannes Berg
The ieee80211_scan_completed() function was a frequent source of potential deadlocks, since it is called by drivers but may call back into drivers, so drivers had to make sure to call it without any locks held, which frequently lead to more complex code in drivers. Avoid that problem by allowing the function to be called in any context, and queueing the actual work it does. Also update the documentation for it to indicate this. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-26gro: __napi_gro_receive() optimizationsEric Dumazet
compare_ether_header() can have a special implementation on 64 bit arches if CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is defined. __napi_gro_receive() and vlan_gro_common() can avoid a conditional branch to perform device match. On x86_64, __napi_gro_receive() has now 38 instructions instead of 53 As gcc-4.4.3 still choose to not inline it, add inline keyword to this performance critical function. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-26net/sctp: Use pr_fmt and pr_<level>Joe Perches
Change SCTP_DEBUG_PRINTK and SCTP_DEBUG_PRINTK_IPADDR to use do { print } while (0) guards. Add SCTP_DEBUG_PRINTK_CONT to fix errors in log when lines were continued. Add #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt Add a missing newline in "Failed bind hash alloc" Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-25stmmac: make ioaddr 'void __iomem *' rather than unsigned longGiuseppe CAVALLARO
This avoids unnecessary casting and adds the ioaddr in the private structure. This patch also removes many warning when compile the driver. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-25Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem Conflicts: drivers/net/wireless/libertas/if_sdio.c
2010-08-25wl12xx: change contact person for the include fileKalle Valo
Luciano should be the contact person for the include/linux/spi/wl12xx.h file. Signed-off-by: Kalle Valo <kvalo@adurom.com> Acked-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-25mac80211: trivial spelling fixesBob Copeland
Fix spelling and readability of a few lines of kernel doc: s/issueing/issuing/g s/approriate/appropriate/g s/supported by simply/supported simply by/ s/IEEE80211_HW_BEACON_FILTERING/IEEE80211_HW_BEACON_FILTER/g Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-24mlx4_en: UDP RSS supportYevgeny Petrilin
Adding capability for RSS for UDP traffic, hashing is done based on IP addresses and UDP port number. The support depends on HW/FW capabilities. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-24mlx4_en: Fixing report in Ethtool get_settingsYevgeny Petrilin
The report now based on query from FW, giving the correct tranciever type and link speed. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-24mlx4_en: Added self diagnostics test implementationYevgeny Petrilin
The selftest includes 5 features: 1. Interrupt test: Executing commands and receiving command completion on all our interrupt vectors. 2. Link test: Verifying we are connected to valid link partner. 3. Speed test: Check that we negotiated link speed correctly. 4. Registers test: Activate HW health check command. 5. Loopback test: Send a packet on loopback interface and catch it on RX side. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-24tc: add meta match on receive hashStephen Hemminger
Trivial extension to existing meta data match rules to allow matching on skb receive hash value. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-24include/linux/if_ether.h: Remove unused #define MAC_FMTJoe Perches
Last use was removed, so remove the #define. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-24cfg80211: add some documentationJohannes Berg
Add some documentation for cfg80211. I'm hoping some of the regulatory documentation will be filled by somebody more familiar with it, hint hint! :) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-24nl80211: some documentation fixesJohannes Berg
The nl80211 documentation is currently never generated, so problems have accumulated. Fix most of the trivial ones. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-24mac80211: fix docbookJohannes Berg
Fix a small problem in the documentation for ieee80211_request_smps, and a now erroneous inclusion of enum ieee80211_key_alg, which no longer exists after the change to ciphers. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-24b43: N-PHY: Implement MAC PHY clock setGábor Stefanik
Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-24cfg80211/mac80211: extensible frame processingJohannes Berg
Allow userspace to register for more than just action frames by giving the frame subtype, and make it possible to use this in various modes as well. With some tweaks and some added functionality this will, in the future, also be usable in AP mode and be able to replace the cooked monitor interface currently used in that case. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-24cfg80211: mark ieee80211_hdrlen constJohannes Berg
This function analyses only its single, value-passed argument, and has no side effects. Thus it can be const, which makes mac80211 smaller, for example: text data bss dec hex filename 362518 16720 884 380122 5ccda mac80211.ko (before) 362358 16720 884 379962 5cc3a mac80211.ko (after) a 160 byte saving in text size, and an optimisation because the function won't be called as often. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-23net: increase the size of priv_flags and add IFF_OVS_DATAPATHSimon Horman
IFF_OVS_DATAPATH is a place-holder for the Open vSwitch datapath which I am preparing to submit for merging. As all 16 bits of priv_flags are already assigned flags, also increase the size of priv_flags to 32 bits. Unfortunately, by my calculations this increases the size of struct net_device by 4 bytes on 32bit architectures and 8 bytes on 64 bit architectures. I couldn't see an obvious way to avoid that. Cc: Jesse Gross <jesse@nicira.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-23bna: Brocade 10Gb Ethernet device driverRasesh Mody
This is patch 1/6 which contains linux driver source for Brocade's BR1010/BR1020 10Gb CEE capable ethernet adapter. Signed-off-by: Debashis Dutt <ddutt@brocade.com> Signed-off-by: Rasesh Mody <rmody@brocade.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-23net: Rename skb_has_frags to skb_has_frag_listDavid S. Miller
SKBs can be "fragmented" in two ways, via a page array (called skb_shinfo(skb)->frags[]) and via a list of SKBs (called skb_shinfo(skb)->frag_list). Since skb_has_frags() tests the latter, it's name is confusing since it sounds more like it's testing the former. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-22Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: include/linux/if_pppox.h Fix conflict between Changli's __packed header file fixes and the new PPTP driver. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-22header: fix broken headers for user spaceChangli Gao
__packed is only defined in kernel space, so we should use __attribute__((packed)) for the code shared between kernel and user space. Two __attribute() annotations are replaced with __attribute__() too. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-22net: rds: remove duplication type definitionsChangli Gao
__be* are defined in linux/types.h now, and in fact, rds.h isn't exported to user space even. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-22net: 802.1q: make vlan_hwaccel_do_receive() return voidChangli Gao
vlan_hwaccel_do_receive() always returns 0, so make it return void. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-22net: use __be16 instead of u16 for the userspace codeChangli Gao
Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-21net_sched: cls_flow: add key rxhashChangli Gao
We can use rxhash to classify the traffic into flows. As rxhash maybe supplied by NIC or RPS, it is cheaper. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Acked-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-21irda: use net_device_stats from struct net_deviceEric Dumazet
struct net_device has its own struct net_device_stats member, so use this one instead of a private copy in the irlan_cb struct. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-21Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-08-21PPTP: PPP over IPv4 (Point-to-Point Tunneling Protocol)Dmitry Kozlov
PPP: introduce "pptp" module which implements point-to-point tunneling protocol using pppox framework NET: introduce the "gre" module for demultiplexing GRE packets on version criteria (required to pptp and ip_gre may coexists) NET: ip_gre: update to use the "gre" module This patch introduces then pptp support to the linux kernel which dramatically speeds up pptp vpn connections and decreases cpu usage in comparison of existing user-space implementation (poptop/pptpclient). There is accel-pptp project (https://sourceforge.net/projects/accel-pptp/) to utilize this module, it contains plugin for pppd to use pptp in client-mode and modified pptpd (poptop) to build high-performance pptp NAS. There was many changes from initial submitted patch, most important are: 1. using rcu instead of read-write locks 2. using static bitmap instead of dynamically allocated 3. using vmalloc for memory allocation instead of BITS_PER_LONG + __get_free_pages 4. fixed many coding style issues Thanks to Eric Dumazet. Signed-off-by: Dmitry Kozlov <xeb@mail.ru> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-20net/sched: add ACT_CSUM action to update packets checksumsGrégoire Baron
net/sched: add ACT_CSUM action to update packets checksums ACT_CSUM can be called just after ACT_PEDIT in order to re-compute some altered checksums in IPv4 and IPv6 packets. The following checksums are supported by this patch: - IPv4: IPv4 header, ICMP, IGMP, TCP, UDP & UDPLite - IPv6: ICMPv6, TCP, UDP & UDPLite It's possible to request in the same action to update different kind of checksums, if the packets flow mix TCP, UDP and UDPLite, ... An example of usage is done in the associated iproute2 patch. Version 3 changes: - remove useless goto instructions - improve IPv6 hop options decoding Version 2 changes: - coding style correction - remove useless arguments of some functions - use stack in tcf_csum_dump() - add tcf_csum_skb_nextlayer() to factor code Signed-off-by: Gregoire Baron <baronchon@n7mm.org> Acked-by: jamal <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19net: introduce proto_ports_offset()Changli Gao
Introduce proto_ports_offset() for getting the position of the ports or SPI in the message of a protocol. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19net: simplify flags for tx timestampingOliver Hartkopp
This patch removes the abstraction introduced by the union skb_shared_tx in the shared skb data. The access of the different union elements at several places led to some confusion about accessing the shared tx_flags e.g. in skb_orphan_try(). http://marc.info/?l=linux-netdev&m=128084897415886&w=2 Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18netfilter: fix userspace header warningSam Ravnborg
"make headers_check" issued the following warning: CHECK include/linux/netfilter (64 files) usr/include/linux/netfilter/xt_ipvs.h:19: found __[us]{8,16,32,64} type without #include <linux/types.h> Fix this by as suggested including linux/types.h. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18net: add Fast Ethernet driver for PXA168.Sachin Sanap
Signed-off-by: Sachin Sanap <ssanap@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-16macvtap: Implement multiqueue for macvtap driverKrishna Kumar
Implement multiqueue facility for macvtap driver. The idea is that a macvtap device can be opened multiple times and the fd's can be used to register eg, as backend for vhost. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-16core: Factor out flow calculation from get_rps_cpuKrishna Kumar
Factor out flow calculation code from get_rps_cpu, since other functions can use the same code. Revisions: v2 (Ben): Separate flow calcuation out and use in select queue. v3 (Arnd): Don't re-implement MIN. v4 (Changli): skb->data points to ethernet header in macvtap, and make a fast path. Tested macvtap with this patch. v5 (Changli): - Cache skb->rxhash in skb_get_rxhash - macvtap may not have pow(2) queues, so change code for queue selection. (Arnd): - Use first available queue if all fails. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-16mac80211: use cipher suite selectorsJohannes Berg
Currently, mac80211 translates the cfg80211 cipher suite selectors into ALG_* values. That isn't all too useful, and some drivers benefit from the distinction between WEP40 and WEP104 as well. Therefore, convert it all to use the cipher suite selectors. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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