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* sctp: fast recovery algorithm is per association.Vlad Yasevich2010-04-302-21/+23
| | | | | | | SCTP fast recovery algorithm really applies per association and impacts all transports. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: update transport initializationsVlad Yasevich2010-04-304-31/+1
| | | | | | | | | Right now, sctp transports are not fully initialized and when adding any new fields, they have to be explicitely initialized. This is prone to mistakes. So we switch to calling kzalloc() which makes things much simpler. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: Save some room in the sctp_transport by using bitfieldsVlad Yasevich2010-04-301-22/+27
| | | | | | Saves some room in the sctp_transport structure. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: Do not force T3 timer on fast retransmissions.Vlad Yasevich2010-04-302-14/+5
| | | | | | | | | We don't need to force the T3 timer any more and it's actually wrong to do as it causes too long of a delay. The timer will be started if one is not running, but if one is running, we leave it alone. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: remove 'resent' bit from the chunkVlad Yasevich2010-04-304-20/+10
| | | | | | | | | | | The 'resent' bit is used to make sure that we don't update rto estimate based on retransmitted chunks. However, we already have the 'rto_pending' bit that we test when need to update rto, so 'resent' bit is just extra. Additionally, we currently have a bug in that we always set a 'resent' bit and thus rto estimate is only updated by Heartbeats. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: Make sure we always return valid retransmit pathVlad Yasevich2010-04-301-1/+2
| | | | | | | | | | | | | | | commit 4951feda0c60d1ef681f1a270afdd617924ab041 sctp: Do no select unconfirmed transports for retransmissions added code to make sure that we do not select unconfirmed paths for data transmission. This caused a problem when there are only 2 paths, 1 unconfirmed and 1 unreachable. In that case, the next retransmit path returned is NULL and that causes a kernel crash. The solution is to only change retransmit paths if we found one to use. Reported-by: Frank Schuster <frank.schuster01@web.de> Signed-off-b: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: cleanup: remove duplicate assignmentDan Carpenter2010-04-301-14/+9
| | | | | | | | | | | This assignment isn't needed because we did it earlier already. Also another reason to delete the assignment is because it triggers a Smatch warning about checking for NULL pointers after a dereference. Reported-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: implement sctp association probing moduleWei Yongjun2010-04-303-0/+228
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch implement sctp association probing module, the module will be called sctp_probe. This module allows for capturing the changes to SCTP association state in response to incoming packets. It is used for debugging SCTP congestion control algorithms. Usage: $ modprobe sctp_probe [full=n] [port=n] [bufsize=n] $ cat /proc/net/sctpprobe The output format is: TIME ASSOC LPORT RPORT MTU RWND UNACK <REMOTE-ADDR STATE CWND SSTHRESH INFLIGHT PARTIAL_BYTES_ACKED MTU> ... The output will be like this: 9.226086 c4064c48 9000 8000 1500 53352 1 *192.168.0.19 1 4380 54784 1252 0 1500 9.287195 c4064c48 9000 8000 1500 45144 5 *192.168.0.19 1 5880 54784 6500 0 1500 9.289130 c4064c48 9000 8000 1500 42724 5 *192.168.0.19 1 7380 54784 6500 0 1500 9.620332 c4064c48 9000 8000 1500 48284 4 *192.168.0.19 1 8880 54784 5200 0 1500 ...... Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: use sctp_chunk_is_data macro to decide a chunk is data chunkShan Wei2010-04-301-1/+1
| | | | | | | | sctp_chunk_is_data macro is defined to decide that whether a chunk is data chunk or not. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: Do no select unconfirmed transports for retransmissionsVlad Yasevich2010-04-301-2/+3
| | | | | | | | | | | An unconfirmed transport is one that we have not been able to reach since the beginning. There is no point in trying to retrasnmit data on those transports. Also, the specification forbids it due to security issues. Reported-by: Frank Schuster <frank.schuster01@web.de> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: fix to retranmit at least one DATA chunkWei Yongjun2010-04-301-0/+12
| | | | | | | | | | | While doing retranmit, if control chunk exists, such as FORWARD TSN chunk, and the DATA chunk can not be bundled with this control chunk because of PMTU limit, no DATA chunk will be retranmitted in the current implementation. This patch makes sure to retranmit at least one DATA chunk in this case. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: missing set src and dest port while lookup output routeWei Yongjun2010-04-301-1/+6
| | | | | | | | | While lookup the output route, we do not set the src and dest port. This will cause we got a wrong route if we had set the outbund transport to IPsec with src or dst port. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: discard ABORT chunk with zero verification tag in COOKIE-WAIT stateWei Yongjun2010-04-301-1/+1
| | | | | | | | | | In current implementation if ABORT chunk is received with T flag is set and zero verification tag in COOKIE-WAIT state, the ABORT chunk will be always accepted. This is because in COOKIE-WAIT state, the endpoint does not know the peer's verification tag, and it's zero in the endpoint. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: assure at least one T3-rtx timer is running if a FORWARD TSN is sentWei Yongjun2010-04-301-0/+6
| | | | | | | | | | | | PR-SCTP extension section 3.5 Sender Side Implementation of PR-SCTP: C5) If a FORWARD TSN is sent, the sender MUST assure that at least one T3-rtx timer is running. So this patch fix to assure at least one T3-rtx timer is running if a FORWARD TSN is or will to sent. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: send SHUTDOWN-ACK chunk back to the source.Vlad Yasevich2010-04-301-2/+6
| | | | | | | | | SHUTDOWN-ACK is alaways sent to the primary path at the first time, but should better transmit SHUTDOWN-ACK chunk to the same destination transport address from which it received the SHUTDOWN chunk. Based on the work from Wei Yongjun <yjwei@cn.fujitsu.com>. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: Use correct address family in sctp_getsockopt_peer_addrs()Vlad Yasevich2010-04-301-1/+1
| | | | | | | The function should use the address family of the address when trying to determine the length of the structure. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* ipv6: cleanup: remove unneeded null checkDan Carpenter2010-04-301-2/+1
| | | | | | | | | | | | We dereference "sk" unconditionally elsewhere in the function. This was left over from: b30bd282 "ip6_xmit: remove unnecessary NULL ptr check". According to that commit message, "the sk argument to ip6_xmit is never NULL nowadays since the skb->priority assigment expects a valid socket." Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: potential uninitialized variable num_xfrmsChangli Gao2010-04-301-1/+1
| | | | | | | | | | | | potential uninitialized variable num_xfrms fix compiler warning: 'num_xfrms' may be used uninitialized in this function. Signed-off-by: Changli Gao <xiaosuo@gmail.com> ---- net/xfrm/xfrm_policy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Signed-off-by: David S. Miller <davem@davemloft.net>
* net: speedup sock_recv_ts_and_drops()Eric Dumazet2010-04-302-3/+20
| | | | | | | | | | sock_recv_ts_and_drops() is fat and slow (~ 4% of cpu time on some profiles) We can test all socket flags at once to make fast path fast again. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* cdc_ether: Identify MBM devices by GUID in MDLM descriptorJonas Sjöquist2010-04-301-74/+39
| | | | | | | | | | | | | | | | | | This patch removes vid/pid for Ericsson MBM devices from the whitelist set of devices. The MBM devices are instead identified by GUID. In order for cdc_ether to handle these devices the GUID in the MDLM descriptor is tested. All MBM devices currently handled by cdc_ether as well as future CDC Ethernet MBM devices can be identified by the GUID. This is the same solution used in Carl Nordbeck's mbm driver, http://kerneltrap.org/mailarchive/linux-usb/2008/11/17/4141384/thread I post this as RFC to get feedback on however cdc_ether is the correct place to do the binding, or if it should be done in a separate driver, e.g. zaurus. Signed-off-by: Jonas Sjöquist <jonas.sjoquist@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* forcedeth: Stay in NAPI as long as there's workstephen hemminger2010-04-301-14/+17
| | | | | | | | | | The following does the same thing without the extra overhead of testing all the registers. It also handles the out of memory case. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Tested-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: ip_queue_rcv_skb() helperEric Dumazet2010-04-287-4/+22
| | | | | | | | | | | | | When queueing a skb to socket, we can immediately release its dst if target socket do not use IP_CMSG_PKTINFO. tcp_data_queue() can drop dst too. This to benefit from a hot cache line and avoid the receiver, possibly on another cpu, to dirty this cache line himself. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: speedup udp receive pathEric Dumazet2010-04-284-11/+25
| | | | | | | | | | | | | | | | | | | | | Since commit 95766fff ([UDP]: Add memory accounting.), each received packet needs one extra sock_lock()/sock_release() pair. This added latency because of possible backlog handling. Then later, ticket spinlocks added yet another latency source in case of DDOS. This patch introduces lock_sock_bh() and unlock_sock_bh() synchronization primitives, avoiding one atomic operation and backlog processing. skb_free_datagram_locked() uses them instead of full blown lock_sock()/release_sock(). skb is orphaned inside locked section for proper socket memory reclaim, and finally freed outside of it. UDP receive path now take the socket spinlock only once. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* igb: Clean up left over prototype of igb_get_hw_dev_name()Emil Tantilov2010-04-281-1/+0
| | | | | | Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wireless: Fix merge.Hauke Mehrtens2010-04-281-1/+0
| | | | | | | | | | in your merge in 5c01d5669356e13f0fb468944c1dd4c6a7e978ad you added "int i;" into wl1271_main.c which is unused in that function. This patch fixes the merge problem: Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* Bugfix: Link selection was swapped in switch.Sjur Braendeland2010-04-281-2/+2
| | | | | Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* caif: Bugfixes in CAIF netdevice for close and flow controlSjur Braendeland2010-04-281-57/+73
| | | | | | | | | | | Changes: o Bugfix: Flow control was causing the device to be destroyed. o Bugfix: Handle CAIF channel connect failures. o If the underlying link layer is gone the net-device is no longer removed, but closed. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* caif: Rewritten socket implementationSjur Braendeland2010-04-282-969/+831
| | | | | | | | | | | | Changes: This is a complete re-write of the socket layer. Making the socket implementation more aligned with the other socket layers and using more of the support functions available in sock.c. Lots of code is copied from af_unix (and some from af_irda). Non-blocking mode should be working as well. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* caif: Disconnect without waiting for responseSjur Braendeland2010-04-283-146/+111
| | | | | | | | | | | | | | | | | | | Changes: o Function cfcnfg_disconn_adapt_layer is changed to do asynchronous disconnect, not waiting for any response from the modem. Due to this the function cfcnfg_linkdestroy_rsp does nothing anymore. o Because disconnect may take down a connection before a connect response is received the function cfcnfg_linkup_rsp is checking if the client is still waiting for the response, if not a disconnect request is sent to the modem. o cfctrl is no longer keeping track of pending disconnect requests. o Added function cfctrl_cancel_req, which is used for deleting a pending connect request if disconnect is done before connect response is received. o Removed unused function cfctrl_insert_req2 o Added better handling of connect reject from modem. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* caif: Add reference counting to service layerSjur Braendeland2010-04-287-1/+66
| | | | | | | | | | Changes: o Added functions cfsrvl_get and cfsrvl_put. o Added support release_client to use by socket and net device. o Increase reference counting for in-flight packets from cfmuxl Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* caif: Rename functions in cfcnfg and caif_devSjur Braendeland2010-04-284-41/+41
| | | | | | | | | | | | Changes: o Renamed cfcnfg_del_adapt_layer to cfcnfg_disconn_adapt_layer o Fixed typo cfcfg to cfcnfg o Renamed linkid to channel_id o Updated documentation in caif_dev.h o Minor formatting changes Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* caif: Ldisc add permission check and mem-alloc error checkSjur Braendeland2010-04-281-1/+4
| | | | | | | | | | Changes: o Added permission checks for installing. CAP_SYS_ADMIN and CAP_SYS_TTY_CONFIG can install the ldisc. o Check if allocation of skb was successful. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Create multiple TX queuesBen Hutchings2010-04-288-123/+140
| | | | | | | | | | | | Create a core TX queue and 2 hardware TX queues for each channel. If separate_tx_channels is set, create equal numbers of RX and TX channels instead. Rewrite the channel and queue iteration macros accordingly. Eliminate efx_channel::used_flags as redundant. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Test only the first pair of TX queuesBen Hutchings2010-04-282-3/+3
| | | | | | | | | This makes no immediate difference, but we definitely do not want to test all TX queues once we allocate a pair of TX queues to each channel. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Add Siena PHY BIST and cable diagnostic supportSteve Hodgson2010-04-281-2/+144
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Clean up efx_nic::irq_zero_countBen Hutchings2010-04-281-1/+2
| | | | | | | | There is no need for this to be unsigned long; make it unsigned int. It does need a line in kernel-doc, so add that. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Add necessary parentheses to macro definitions in net_driver.hBen Hutchings2010-04-281-11/+11
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Break NAPI processing after one ring-full of TX completionsBen Hutchings2010-04-282-24/+33
| | | | | | | | | | | Currently TX completions do not count towards the NAPI budget. This means a continuous stream of TX completions can cause the polling function to loop indefinitely with scheduling disabled. To avoid this, follow the common practice of reporting the budget spent after processing one ring-full of TX completions. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Set PERIODIC_NOEVENT flag for MC_CMD_MAC_STATSSteve Hodgson2010-04-281-16/+9
| | | | | | | | When set, an event is not sent whenever periodic MAC statistics are raised. This avoids unnecessary wake-ups. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Update MCDI protocol definitionsBen Hutchings2010-04-281-16/+55
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Enable IPv6 RSS using random key for Toeplitz hashBen Hutchings2010-04-282-0/+21
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Read MEM_STAT for SRM_PERR as well as MEM_PERR errorsSteve Hodgson2010-04-281-1/+2
| | | | | | | | Parity errors in different blocks of SRAM may set one of two different interrupt flags. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Log specific message for failure of NVRAM self-testBen Hutchings2010-04-281-2/+8
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Extend the legacy interrupt workaroundsSteve Hodgson2010-04-282-15/+10
| | | | | | | | | | | | | | | | | Siena has two problems with legacy interrupts: 1. There is no synchronisation between the ISR read completion, and the interrupt deassert message. 2. A downstream read at the "wrong" moment can return 0, and suppress generating the next interrupt. Falcon should suffer from both of these, and it appears it does. Enable EFX_WORKAROUND_15783 on Falcon as well. Also, when we see queues == 0, ensure we always schedule or rearm every event queue. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Reconfigure the XAUI serdes after an EM resetSteve Hodgson2010-04-283-1/+5
| | | | | | | | Fix a regression introduced in d3245b28ef2a45ec4e115062a38100bd06229289 "sfc: Refactor link configuration". Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Stop masking out XGMII faults over reconfiguresSteve Hodgson2010-04-281-15/+5
| | | | | | | | | | | | The aim of this code was to avoid a spurious XGMII fault over a MAC reconfigure. It's less relevant now that the PHY reconfigure isn't called from the MAC reconfigure. After applying this patch, our link stress test passed 48 hours of testing without ever resetting the PHY. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Handle serious errors in exactly one interrupt handlerSteve Hodgson2010-04-283-21/+29
| | | | | | | | | | | | | 'Fatal' errors set an interrupt flag associated with a specific event queue; only read the syndrome vector if we see that queue's flag set (legacy interrupts) or in the interrupt handler for that queue (MSI). Do not ignore an interrupt if the fatal error flag is set but specific error flags are all zero. Even if we don't schedule a reset, we must respect the queue mask and rearm the appropriate event queues. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Consistently report short MCDI responses as EIOBen Hutchings2010-04-282-11/+17
| | | | | | | | In some cases failing functions were returning 0 which is obviously wrong. In other cases they were returning inappropriate error codes. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Ignore parity errors in the other port's SRAMSteve Hodgson2010-04-281-0/+2
| | | | | | | | | | Siena has a separate SRAM bank for each port. On single-port boards these can be merged together, so each port has an interrupt flag for parity errors in the other port's SRAM. Currently we do not enable such merging and should mask this interrupt source. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sky2: use the DMA state API instead of the pci equivalentsFUJITA Tomonori2010-04-282-14/+14
| | | | | | | | | | | | | | | This replace the PCI DMA state API (include/linux/pci-dma.h) with the DMA equivalents since the PCI DMA state API will be obsolete. No functional change. For further information about the background: http://marc.info/?l=linux-netdev&m=127037540020276&w=2 Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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