- 22 Sep, 2015 32 commits
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Alexander Aring authored
This patch supports handling to set the cca energy detection level for the mrf24j40 transceiver. Reviewed-by:
Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by:
Alexander Aring <alex.aring@gmail.com> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org>
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Alexander Aring authored
This patch supports cca mode handling for mrf24j40. Reviewed-by:
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Alexander Aring authored
This patch adds supports to change the CSMA parameters. The datasheet doesn't say anything about max_be value. Seems not configurable and we assume the 802.15.4 default. But this value must exists because there is a min_be value. Signed-off-by:
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Alexander Aring authored
This patch removes the threaded irq handling and do a hardirq instead. We need to switch to spi_async for this step for getting the irq status register. Reviewed-by:
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Alexander Aring authored
This patch prepares that we can do the receive handling inside interrupt context by using spi_async. This is necessary for introduce a non-threaded irq handling. Also we drop the bit setting for "RXDECINV" at register "BBREG1", we do a driectly full write of register "BBREG1", because it contains the bit RXDECINV only. Reviewed-by:
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Alexander Aring authored
This patch reworks the current transmit API to spi_async handling. We removed the error handling check, because mac802154 has no chance to report it. Also the transmit timeout handling can't be handled by xmit async handling, for this usecase we need to implement the netdev watchdog. These are all unlikely cases which we drop now and should be provided by netdev watchdog. We also drop the bit setting for TXNACKREQ at register TXNCON, this is not necessary. The TXNCON register should set only once for each frame, previous settings doesn't matter. Reviewed-by:
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Alexander Aring authored
This patch introduce two static inline functions. The first to get the frame control field from an sk_buff. The second is for checking on the acknowledgment request bit on the frame control field. Later we can introduce more functions to check on the frame control fields. These will deprecate the current behaviour which requires a host-byteorder conversion and manually bit handling. Reviewed-by:
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Alexander Aring authored
This patch changes the frame delivery to mac802154 with crc. This is useful for monitor interface types which deliver the crc to userspace. Reviewed-by:
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Alexander Aring authored
This patch uses the regmap functions for transceiver register settings where it's possible. This means everything except the hotpaths like receive/transmit handling. Reviewed-by:
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Alexander Aring authored
This patch introduce regmap support for short and long address space of mrf24j40. It's only possible to use regmap_read/write/update_bits for long address range. This is because I added lowlevel bus operation because the write operation need to set the 12th bit to mark a register write, but regmap only supports to set bits for register write access in the first byte. We use other regmap register functions than read/write/update_bits, so this should be fine. Reviewed-by:
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Alexander Aring authored
For supporting regmap, this patch will add more register defines to prepare a full register dump by regmap debugfs. Reviewed-by:
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Alexander Aring authored
The mrf24j40 has no source to get a permanent extended address. This patch will add a random generated permanent extended address source. Reviewed-by:
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Alexander Aring authored
Per default mrf24j40 has the channel 11 after reset. This patch adds the right phy default value for the channel setting. Reviewed-by:
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Alexander Aring authored
This patch adds devicetree support to mrf24j40 with proper devicetree compatible strings. Reviewed-by:
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Alexander Aring authored
This patch removes spi settings while mrf24j40 probing. These settings cannot be overwrite while device probing where spi controller should be already configured. These settings need to be setup by device tree or platform data. Reviewed-by:
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Alexander Aring authored
The function ieee802154_register_hw should always called at last. Currently we do hardware init and such things after register hardware into the subsystem. It could be that the subsystem already call driver operations while running hardware init. Reviewed-by:
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Alexander Aring authored
This patch removes the own private dataroom allocation by calling devm_kzalloc for devrec and assign this pointer to "devrec->hw->priv". Instead we using like all other drivers ieee802154_alloc_hw and give the size for the private driver dataroom at the first argument. Reviewed-by:
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Alexander Aring authored
This patch replaces the spaces after define by a tab. Reviewed-by:
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Alexander Aring authored
This patch adds support for edge triggered irq types. We remove the locking for irq resources by enable/disable irq and allocate directly some heap buffer at isr. We have still a enable/disable irq path but this is for level-triggered irq's which need to be disabled until spi_async clear the irq line. There is usually a little race condition between "irq line cleared" and "enable_irq". When in this time a edge triggered irq arrived, we will not recognize this interrupt. This case can't happend at at86rf230. The reason is that we unmask TRX_END irq's only which indicates a transmit or receive completion, which depends on the current state. On Transmit: TRX_END arrived and transceiver is in TX_ARET_ON state again, in this state no other TRX_END can happen until we leave the state. On Receive: This is protected with the RX_SAFE_MODE bit which leaves the transceiver in RX_AACK_BUSY until we readed the framebuffer. In this state no other TRX_END can happen. Tested with RPi where I first detected issues between edge/level irq's. Signed-off-by:
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Alexander Aring authored
Sending over AF_PACKET RAW sockets we can sending frames which exceeds MTU size. To handling it correct we need to change things in AF_PACKET which knows on RAW sockets an additional FCS is set by hardware or mac802154 transmit functionality. Signed-off-by:
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Alexander Aring authored
This patch cleanups needed_headroom, needed_tailroom and hard_header_len fields for wpan and lowpan interfaces. For wpan interfaces the worst case mac header len should be part of needed_headroom, currently this is set as hard_header_len, but hard_header_len should be set to the minimum header length which xmit call assumes and this is the minimum frame length of 802.15.4. The hard_header_len value will check inside send callbacl of AF_PACKET raw sockets. For lowpan interfaces, if fragmentation isn't needed the skb will call dev_hard_header for 802154 layer and queue it afterwards. This happens without new skb allocation, so we need the same headroom and tailroom lengths like 802154 inside 802154 6lowpan layer. At least we assume as minimum header length an ipv6 header size. Signed-off-by:
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Alexander Aring authored
The current header_ops callback structure of net device are used mostly from 802.15.4 upper-layers. Because this callback structure is a very generic one, which is also used by e.g. DGRAM AF_PACKET sockets, we can't make this callback structure 802.15.4 specific which is currently is. I saw the smallest "constraint" for calling this callback with dev_hard_header/dev_parse_header by AF_PACKET which assign a 8 byte array for address void pointers. Currently 802.15.4 specific protocols like af802154 and 6LoWPAN will assign the "struct ieee802154_addr" as these parameters which is greater than 8 bytes. The current callback implementation for header_ops.create assumes always a complete "struct ieee802154_addr" which AF_PACKET can't never handled and is greater than 8 bytes. For that reason we introduce now a "generic" create/parse header_ops callback which allows handling with intra-pan extended addresses only. This allows a small use-case with AF_PACKET to send "somehow" a valid dataframe over DGRAM. To keeping the current dev_hard_header behaviour we introduce a similar callback structure "wpan_dev_header_ops" which contains 802.15.4 specific upper-layer header creation functionality, which can be called by wpan_dev_hard_header. Signed-off-by:
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Alexander Aring authored
Sometimes upper-layer protocols wants to generate a new mac header by filling "struct ieee802154_hdr" only. These upper-layers sets for the address settings the source and dest fields, but not the fc fields for indicate the source and dest address mode. This patch changes the "ieee802154_hdr_push" function so the fc address fields are set according the source and dest fields of "struct ieee802154_hdr". Signed-off-by:
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Alexander Aring authored
This patch adds a missing list_del when a device description will be deleted. Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by:
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Nachiket Kukade authored
First firmware dump attempt from user works fine, but firmware goes into bad state after this. Subsequent attempts fails. As required by the firmware dump implementation, this change writes FW_DUMP_READ_DONE value to dump ctrl register to address this issue. Signed-off-by:
Nachiket Kukade <kukaden@marvell.com> Signed-off-by:
Amitkumar Karwar <akarwar@marvell.com> Signed-off-by:
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Stephen Rothwell authored
Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Cc: Alexander Aring <alex.aring@gmail.com> Cc: Stefan Schmidt <stefan@osg.samsung.com> Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Mugunthan V N says: ==================== Add support for reading macid when DT macid not found Did a boot test on dra7-evm [1] and am437x-gp-evm [2]. Pushed a branch [3] for others to test the patch. [1]: http://pastebin.ubuntu.com/12513420/ [2]: http://pastebin.ubuntu.com/12513428/ [3]: git://git.ti.com/~mugunthanvnm/ti-linux-kernel/linux.git cpsw-macid-read-support ==================== Signed-off-by:
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Mugunthan V N authored
There are 2 MACIDs stored in the control module of the am4372. These are read by the cpsw driver if no valid MACID was found in the devicetree. Signed-off-by:
Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by:
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Mugunthan V N authored
There are 2 MACIDs stored in the control module of the dra7. These are read by the cpsw driver if no valid MACID was found in the devicetree. Signed-off-by:
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Mugunthan V N authored
Adding support for reading mac address using syscon driver for dra7 and am437x platforms Signed-off-by:
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Mugunthan V N authored
Moving mac address reading from ethernet driver to common file for better maintenance and for code reusable. Signed-off-by:
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David S. Miller authored
Merge tag 'linux-can-next-for-4.4-20150921' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next Marc Kleine-Budde says: ==================== pull-request: can-next 2015-09-17 this is a pull request of 8 patches for net-next/master. All 8 patches are by me and cleanup the flexcan driver. ==================== Signed-off-by:
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- 21 Sep, 2015 8 commits
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Florian Fainelli authored
We were checking twice for ec->tx_coalesce_usecs_high, remove the duplicate test. Reported-by:
Julia Lawall <julia.lawall@lip6.fr> Reported-by: kbuild-all@01.org Fixes: 2f913070 ("net: bcmgenet: Implement TX coalescing control knobs") Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Yuchung Cheng authored
This patch makes TLP to use 1 sec timer by default when RTT is not available due to SYN/ACK retransmission or SYN cookies. Prior to this change, the lack of RTT prevents TLP so the first data packets sent can only be recovered by fast recovery or RTO. If the fast recovery fails to trigger the RTO is 3 second when SYN/ACK is retransmitted. With this patch we can trigger fast recovery in 1sec instead. Note that we need to check Fast Open more properly. A Fast Open connection could be (accepted then) closed before it receives the final ACK of 3WHS so the state is FIN_WAIT_1. Without the new check, TLP will retransmit FIN instead of SYN/ACK. Signed-off-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
Nandita Dukkipati <nanditad@google.com> Signed-off-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Yuchung Cheng authored
Currently SYN/ACK RTT is measured in jiffies. For LAN the SYN/ACK RTT is often measured as 0ms or sometimes 1ms, which would affect RTT estimation and min RTT samping used by some congestion control. This patch improves SYN/ACK RTT to be usec resolution if platform supports it. While the timestamping of SYN/ACK is done in request sock, the RTT measurement is carefully arranged to avoid storing another u64 timestamp in tcp_sock. For regular handshake w/o SYNACK retransmission, the RTT is sampled right after the child socket is created and right before the request sock is released (tcp_check_req() in tcp_minisocks.c) For Fast Open the child socket is already created when SYN/ACK was sent, the RTT is sampled in tcp_rcv_state_process() after processing the final ACK an right before the request socket is released. If the SYN/ACK was retransmistted or SYN-cookie was used, we rely on TCP timestamps to measure the RTT. The sample is taken at the same place in tcp_rcv_state_process() after the timestamp values are validated in tcp_validate_incoming(). Note that we do not store TS echo value in request_sock for SYN-cookies, because the value is already stored in tp->rx_opt used by tcp_ack_update_rtt(). One side benefit is that the RTT measurement now happens before initializing congestion control (of the passive side). Therefore the congestion control can use the SYN/ACK RTT. Signed-off-by:
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David S. Miller authored
Ursula Braun says: ==================== s390: qeth and iucv patches here is version 2 of some s390 related qeth patches for net-next. The patch by Thomas Richter adds a new feature to the qeth layer2 code; the remaining patches are minor improvements. Version 2 of patch 4 uses the desired indentation in function declarations and definitions spanning multiple lines in almost all cases. Thomas run into a conflict with the maximum number of columns once. Thus you will still see one function definition using an earlier column before the opening paranthesis. ==================== Signed-off-by: -
Ursula Braun authored
The iucv code uses arrays as arguments. Even though this does not really cause a problem, it could be misleading, since the compiler turns array arguments into just a pointer argument. To be more precise this patch changes the array arguments into pointers. Signed-off-by:
Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by:
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Thomas Richter authored
Checksum offloading for send and receive is already supported for layer 3 (IP layer). This patch adds support for RX and TX hardware checksum offloading for layer 2 (MAC layer). The hardware calculates the checksum for IP UDP and TCP packets. This patch moves the hardware checksum offloading setup to the set of common functions in qeth_core_main.c. Layer 2 and layer 3 now simply call the same common functions. Also note that TX checksum offloading is always enabled. The device driver relies on the TCP/IP stack to make use of this feature. Signed-off-by:
Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by:
Eugene Crosser <Eugene.Crosser@ru.ibm.com> Signed-off-by:
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Ursula Braun authored
An OSA-Express port name was required to identify a shared OSA port. All operating system instances that shared the port had to use the same port name. This requirement no longer applies. Signed-off-by:
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Lakhvich Dmitriy authored
User is not allowed to write into bridge_state sysfs file. Fixed attribute not mislead the user Signed-off-by:
Lakhvich Dmitriy <ldmitriy@ru.ibm.com> Signed-off-by:
Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Reviewed-by:
Thomas Richter <tmricht@de.ibm.com> Signed-off-by:
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