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* Bluetooth: Fix drop of acked packets on ERTMGustavo F. Padovan2010-05-10
| | | | | | | | | l2cap_drop_acked_frames() was droping not sent packets, causing them to be not transmitted. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix crash when monitor timeout expiresGustavo F. Padovan2010-05-10
| | | | | | | | | The code was crashing due to a invalid access to hci_conn after the channel disconnect. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix bug when retransmitting I-framesGustavo F. Padovan2010-05-10
| | | | | | | | | If there is no frames to retransmit l2cap was crashing the kernel, now we check if the queue is empty first. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Enable option to configure Max Transmission value via sockoptGustavo F. Padovan2010-05-10
| | | | | | | | With the sockopt extension we can set a per-channel MaxTx value. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add module parameter for txWindow size on L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | | Very useful for testing purposes. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> [jprvita@profusion.mobi: improved parameter description] Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Change acknowledgement to use the value of txWindowGustavo F. Padovan2010-05-10
| | | | | | | | | | | Now that we can set the txWindow we need to change the acknowledgement procedure to ack after each (pi->txWindow/6 + 1). The plus 1 is to avoid the zero value. It also renames pi->num_to_ack to a better name: pi->num_acked. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add sockopt configuration for txWindow on L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | Now we can set/get Transmission Window size via sockopt. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Send Ack after clear the SREJ listGustavo F. Padovan2010-05-10
| | | | | | | | | As specified by Bluetooth 3.0 spec we shall send an acknowledgment using the Send-Ack() after clear the SREJ list. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Check the SDU size against the MTU valueGustavo F. Padovan2010-05-10
| | | | | | | | | | If the SDU size is greater than the MTU something is wrong, so report an error. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> [jprvita@profusion.mobi: set err to appropriate errno value] Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add le16 macro to Retransmission and Monitor Timeouts valuesGustavo F. Padovan2010-05-10
| | | | | | | | Fix a possible problem with Big Endian machines. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix configuration of the MPS valueGustavo F. Padovan2010-05-10
| | | | | | | | | We were accepting values bigger than we can accept. This was leading ERTM to drop packets because of wrong FCS checks. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Read RFC conf option on a successful Conf RSPGustavo F. Padovan2010-05-10
| | | | | | | | | | | On Enhanced Retransmission Mode and Streaming Mode a entity can send, on a successful Conf RSP, new values for the RFC fields. For example, the entity can send txWindow and MPS values less than the value received on a Conf REQ. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Ignore Tx Window value with Streaming modeGustavo F. Padovan2010-05-10
| | | | | | | | | Tx Window value shall not be used with Streaming Mode and the receiver of the config Request shall ignore its value. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add timer to Acknowledge I-framesGustavo F. Padovan2010-05-10
| | | | | | | | | | | | We ack I-frames on each txWindow/5 I-frames received, but if the sender stop to send I-frames and it's not a txWindow multiple we can leave some frames unacked. So I added a timer to ack I-frames on this case. The timer expires in 200ms. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Finish implementation for Rec RR (P=1) on ERTMGustavo F. Padovan2010-05-10
| | | | | | | | Now the code handles the case under SREJ_SENT state. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Remove duplicate use of __get_reqseq() macro on L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | tx_seq var already has the value of __get_reqseq(). Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Group the ack of I-frames into l2cap_data_channel_rrframe()Gustavo F. Padovan2010-05-10
| | | | | | | | | | | | It also fix a bug: we weren't acknowledging I-frames when P=1. Note that when F=1 we are acknowledging packets before setting RemoteBusy to False. The spec says we should do that in the opposite order, but acknowledment of packets doesn't care about RemoteBusy flag so we can do that in the order we want. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Handle all cases of receipt of RNR-frames into L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | | | We weren't handling the receipt under SREJ_SENT state table. It also introduce l2cap_send_srejtail(). It will be used in the nexts commits too. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Split l2cap_data_channel_sframe()Gustavo F. Padovan2010-05-10
| | | | | | | | | Create a function for each type fo S-frame and avoid a lot of nested code. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add Recv RR (P=0)(F=0) for SREJ_SENT state on ERTMGustavo F. Padovan2010-05-10
| | | | | | | | | This finishes the implementation of Recv RR (P=0)(F=0) for the Enhanced Retransmission Mode on L2CAP. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Move set of P-bit to l2cap_send_sframe()Gustavo F. Padovan2010-05-10
| | | | | | | | | Abstract the send of of P-bit and avoids code duplication like we did with the setting of F-bit. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Implement SendAck() Action on ERTM.Gustavo F. Padovan2010-05-10
| | | | | | | | | | | Shall be used to ack received frames, It must decide type of acknowledgment between a RR frame, a RNR frame or transmission of pending I-frames. It also modifies l2cap_ertm_send() to report the number of frames sent. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Check if SDU size is greater than MTU on L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | | After reassembly the SDU we need to check his size. It can't overflow the MTU size. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Check the minimum {I,S}-frame size into L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | | | All packets with size fewer than the minimum specified is dropped. Note that the size of the l2cap basic header, FCS and SAR fields are already subtracted of len at the moment of the size check. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Support case with F bit set under WAIT_F state.Gustavo F. Padovan2010-05-10
| | | | | | | | | On receipt of a F=1 under WAIT_F state ERTM shall stop monitor timer and start retransmission timer (if there are unacked frames). Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Implement 'Send IorRRorRNR' eventGustavo F. Padovan2010-05-10
| | | | | | | | | After receive a RR with P bit set ERTM shall use this funcion to choose what type of frame to reply with F bit = 1. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Use a l2cap_pinfo struct instead l2cap_pi() macroGustavo F. Padovan2010-05-10
| | | | | | | | Trivial clean up. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix ACL MTU issueGustavo F. Padovan2010-05-10
| | | | | | | | | | ERTM and Streaming Modes was having problems when the ACL MTU is lower than MPS. The 'minus 10' is to take in account the header and fcs lenghts. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix expected_tx_seq calculation on L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | All operation related to the txWindow should be modulo 64. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix memory leak of S-frames into L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | l2cap_data_channel do not free the S-frame, so we free it here. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Move specific Basic Mode code to the right placeGustavo F. Padovan2010-05-10
| | | | | | | | | Inside "case L2CAP_MODE_BASIC:" we don't need to check for sk_type and L2CAP mode. So only the length check is fine. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Trivial clean ups to SCOGustavo F. Padovan2010-05-10
| | | | | | | Remove extra braces and labels, break over column 80 lines, etc Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Make hci_send_sco() voidGustavo F. Padovan2010-05-10
| | | | | | | | | It also removes an unneeded check for the MTU. The check is done before on sco_send_frame() Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix wrong packet type count incrementGustavo F. Padovan2010-05-10
| | | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Use the proper function cast to get hdr dataGustavo F. Padovan2010-05-10
| | | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix return value when bt_skb_alloc failsGustavo F. Padovan2010-05-10
| | | | | | | Set the proper error(ENOMEM), instead of just return 0. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ipv4: remove ip_rt_secret timer (v4)Neil Horman2010-05-08
| | | | | | | | | | | | | A while back there was a discussion regarding the rt_secret_interval timer. Given that we've had the ability to do emergency route cache rebuilds for awhile now, based on a statistical analysis of the various hash chain lengths in the cache, the use of the flush timer is somewhat redundant. This patch removes the rt_secret_interval sysctl, allowing us to rely solely on the statistical analysis mechanism to determine the need for route cache flushes. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Revert "microblaze: Kill NET_SKB_PAD and NET_IP_ALIGN overrides."David S. Miller2010-05-07
| | | | | | | | | This reverts commit 39e0786d3cf39c6d2f47b4818ae2da8b8ebc9ce2. On request from microblaze developers, they are going to handle this differently. Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2: Add prefetches to rx path.Michael Chan2010-05-07
| | | | | | | | | | | | | Add prefetches of the skb and the next rx descriptor to speed up rx path. Use prefetchw() for the skb [suggested by Eric Dumazet]. The rx descriptor is in skb->data which is mapped for streaming mode DMA. Eric Dumazet pointed out that we should not prefetch the data before dma_sync. So we prefetch only if dma_sync is no_op on the system. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2: Add GRO support.Michael Chan2010-05-07
| | | | | | | And turn on NETIF_F_GRO by default [requested by DaveM]. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tehuti: Remove unnecessary memset of netdev private dataTobias Klauser2010-05-07
| | | | | | | | | The memory for the private data is allocated using kzalloc in alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to set it to 0 again. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* sunhme: Remove unnecessary memset of netdev private dataTobias Klauser2010-05-07
| | | | | | | | | The memory for the private data is allocated using kzalloc in alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to set it to 0 again. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* smc9194: Remove unnecessary memset of netdev private dataTobias Klauser2010-05-07
| | | | | | | | | The memory for the private data is allocated using kzalloc in alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to set it to 0 again. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* ethoc: Remove unnecessary memset of napi member in netdev private dataTobias Klauser2010-05-07
| | | | | | | | | The memory for the private data is allocated using kzalloc in alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to set the napi member it to 0 explicitely. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* bcm63xx_enet: Remove unnecessary memset of netdev private dataTobias Klauser2010-05-07
| | | | | | | | | The memory for the private data is allocated using kzalloc in alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to set it to 0 again. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* KS8695: Remove unnecessary memset of netdev private dataTobias Klauser2010-05-07
| | | | | | | | | The memory for the private data is allocated using kzalloc in alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to set it to 0 again. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* 3c523: Remove unnecessary memset of netdev private dataTobias Klauser2010-05-07
| | | | | | | | | The memory for the private data is allocated using kzalloc in alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to set it to 0 again. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* 3c507: Remove unnecessary memset of netdev private dataTobias Klauser2010-05-07
| | | | | | | | | The memory for the private data is allocated using kzalloc in alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to set it to 0 again. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* rps: Various optimizationsEric Dumazet2010-05-07
| | | | | | | | | | | | | | | | | | | | Introduce ____napi_schedule() helper for callers in irq disabled contexts. rps_trigger_softirq() becomes a leaf function. Use container_of() in process_backlog() instead of accessing per_cpu address. Use a custom inlined version of __napi_complete() in process_backlog() to avoid one locked instruction : only current cpu owns and manipulates this napi, and NAPI_STATE_SCHED is the only possible flag set on backlog. we can use a plain write instead of clear_bit(), and we dont need an smp_mb() memory barrier, since RPS is on, backlog is protected by a spinlock. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* microblaze: Kill NET_SKB_PAD and NET_IP_ALIGN overrides.David S. Miller2010-05-07
| | | | | | | | | NET_IP_ALIGN defaults to 2, no need to override. NET_SKB_PAD is now 64, which is much larger than microblaze's L1_CACHE_SIZE so no need to override that either. Signed-off-by: David S. Miller <davem@davemloft.net>
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