- Nov 02, 2012
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Frank Li authored
This patch adds a driver for the FEC(MX6) that offers time stamping and a PTP haderware clock. Because FEC\ENET(MX6) hardware frequency adjustment is complex, we have implemented this in software by changing the multiplication factor of the timecounter. Signed-off-by:
Frank Li <Frank.Li@freescale.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Frank Li authored
Set GRP1 BIT21 ENET_CLK_SEL: Enet tx reference clk from internal clock from anatop (loopback through pad), this clock also sent out to external PHY Signed-off-by:
Frank Li <Frank.Li@freescale.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Frank Li authored
Add ENET 1588 clock input pin MX6Q_PAD_GPIO_16__ENET_ANATOP_ETHERNET_REF_OUT and anatop PLL8 clock source for ENET Signed-off-by:
Frank Li <Frank.Li@freescale.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Frank Li authored
A new file fec_ptp.c will use fec_enet_private to support 1588 PTP move such structure to common header file fec.h Signed-off-by:
Frank Li <Frank.Li@freescale.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Hannes Frederic Sowa authored
Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This patch hooks into the CPTS code and adds support for the HWTSTAMP ioctl. The patch includes code for the CPSW version found in the dm814x even though the background device tree support for this board is still missing. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This patch adds a way to configure the CPTS input clock scaling factors via the device tree. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
Because time stamping on both external ports of the switch simultaneously is positively useless from the application's point of view, this patch provides a DT configuration method to choose the active port. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This patch adds a driver for the CPTS that offers time stamping and a PTP hardware clock. Because some of the CPTS hardware variants (like the am335x) do not support frequency adjustment, we have implemented this in software by changing the multiplication factor of the timecounter. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This patch fixes the cpsw driver to operate correctly with both the dm814x and the am335x versions of the switch hardware. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This patch lets the CPSW driver remember the version number in order to support the two different variants already in the wild. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
The code mixes up the CPSW_SS and the CPSW_WR register naming. This patch changes the names to conform to the published Technical Reference Manual from TI, in order to make working on the code less confusing. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Mugunthan V N authored
Adding multicast address to ALE table via netdev ops to subscribe, transmit or receive multicast frames to and from the network Signed-off-by:
Mugunthan V N <mugunthanvnm@ti.com> Acked-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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- Nov 01, 2012
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Jean-Christophe PLAGNIOL-VILLARD authored
If no pinctrl available just report a warning as some architecture may not need to do anything. Signed-off-by:
Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [nicolas.ferre@atmel.com: adapt the error path, remove unneeded headers] Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Havard Skinnemoen authored
Make the ethernet frame payload word-aligned, possibly making the memcpy into the skb a bit faster. This will be even more important after we eliminate the copy altogether. Also eliminate the redundant RX_OFFSET constant -- it has the same definition and purpose as NET_IP_ALIGN. Signed-off-by:
Havard Skinnemoen <havard@skinnemoen.net> [nicolas.ferre@atmel.com: adapt to newer kernel] Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Nicolas Ferre authored
Handle all TX errors, not only underruns. TX error management is deferred to a dedicated workqueue. Reinitialize the TX ring after treating all remaining frames, and restart the controller when everything has been cleaned up properly. Napi is not stopped during this task as the driver only handles napi for RX for now. With this sequence, we do not need a special check during the xmit method as the packets will be caught by TX disable during workqueue execution. Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Nicolas Ferre authored
Add macb_get_regs() ethtool function and its helper function: macb_get_regs_len(). The version field is deduced from the IP revision which gives the "MACB or GEM" information. An additional version field is reserved. Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Reviewed-by:
Ben Hutchings <bhutchings@solarflare.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Havard Skinnemoen authored
Instead of masking head and tail every time we increment them, just let them wrap through UINT_MAX and mask them when subscripting. Add simple accessor functions to do the subscripting properly to minimize the chances of messing this up. This makes the code slightly smaller, and hopefully faster as well. Also, doing the ring buffer management this way will simplify things a lot when making the ring sizes configurable in the future. Available number of descriptors in ring buffer function by David Laight. Signed-off-by:
Havard Skinnemoen <havard@skinnemoen.net> [nicolas.ferre@atmel.com: split patch in topics, adapt to newer kernel] Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Nicolas Ferre authored
On some revision of GEM, TSR status register has more information. Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Nicolas Ferre authored
This function has little meaning so remove it altogether and let ethtool core fill in the fields automatically. Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Reviewed-by:
Ben Hutchings <bhutchings@solarflare.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Havard Skinnemoen authored
Convert some noisy netdev_dbg() statements to netdev_vdbg(). Defining DEBUG will no longer fill up the logs; VERBOSE_DEBUG still does. Add one more verbose debug for ISR status. Signed-off-by:
Havard Skinnemoen <havard@skinnemoen.net> [nicolas.ferre@atmel.com: split patch in topics, add ISR status] Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Havard Skinnemoen authored
Remove a couple of unneeded barriers and document the remaining ones. Signed-off-by:
Havard Skinnemoen <havard@skinnemoen.net> [nicolas.ferre@atmel.com: split patch in topics] Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Patrice Vilchez authored
Add Gigabit Ethernet mode to GEM cadence IP and enable RGMII connection. Signed-off-by:
Patrice Vilchez <patrice.vilchez@atmel.com> Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This patch removes the timecompare code from the kernel. The top five reasons to do this are: 1. There are no more users of this code. 2. The original idea was a bit weak. 3. The original author has disappeared. 4. The code was not general purpose but tuned to a particular hardware, 5. There are better ways to accomplish clock synchronization. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Acked-by:
John Stultz <john.stultz@linaro.org> Tested-by:
Bob Liu <lliubbo@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
The BF518 has a PTP time unit that works in a similar way to other MAC based clocks, like gianfar, ixp46x, and igb. This patch adds support for using the blackfin as a PHC. Although the blackfin hardware does offer a few ancillary features, this patch implements only the basic operations. Compile tested only. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Tested-by:
Bob Liu <lliubbo@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This patch replaces the sys time stamps and timecompare code with simple raw hardware time stamps in nanosecond resolution. The only tricky bit is to find a PTP Hardware Clock period slower than the input clock period and a power of two. Compile tested only. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Tested-by:
Bob Liu <lliubbo@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
The hardware time stamping code is a compile time option for the blackfin. When it is not enabled, the driver should fall back to the standard ethtool reply to the get_ts_info query. Compile tested only. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Tested-by:
Bob Liu <lliubbo@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This patch adds an ioctl for PTP Hardware Clock (PHC) devices that allows user space to measure the time offset between the PHC and the system clock. Rather than hard coding any kind of estimation algorithm into the kernel, this patch takes the more flexible approach of just delivering an array of raw clock readings. In that way, the user space clock servo may be adapted to new and different hardware clocks. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Acked-by:
Jacob Keller <jacob.e.keller@intel.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ben Hutchings authored
Where a PTP clock driver is associated with a net or PHY driver, it should be enabled automatically whenever that driver is enabled. Therefore: - Make PTP clock drivers select rather than depending on PTP_1588_CLOCK - Remove separate boolean options for PTP clock drivers that are built as part of net driver modules. (This also fixes cases where the PTP subsystem is wrongly forced to be built-in.) - Set 'default y' for PTP clock drivers that depend on specific net drivers but are built separately Signed-off-by:
Ben Hutchings <bhutchings@solarflare.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ben Hutchings authored
PTP hardware clock drivers that select PTP_1588_CLOCK must currently also select PPS. For those drivers that don't, the user must enable PPS, then enable PTP_1588_CLOCK, then the driver. Simplify things for developers and users by putting this selection in one place. Signed-off-by:
Ben Hutchings <bhutchings@solarflare.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ben Hutchings authored
These are now established subsystems, and we want drivers to be able to select PPS and PTP_1588_CLOCK without depending on EXPERIMENTAL. Further, the use of EXPERIMENTAL is now deprecated in general. Signed-off-by:
Ben Hutchings <bhutchings@solarflare.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Pavel Emelyanov authored
The SO_ATTACH_FILTER option is set only. I propose to add the get ability by using SO_ATTACH_FILTER in getsockopt. To be less irritating to eyes the SO_GET_FILTER alias to it is declared. This ability is required by checkpoint-restore project to be able to save full state of a socket. There are two issues with getting filter back. First, kernel modifies the sock_filter->code on filter load, thus in order to return the filter element back to user we have to decode it into user-visible constants. Fortunately the modification in question is interconvertible. Second, the BPF_S_ALU_DIV_K code modifies the command argument k to speed up the run-time division by doing kernel_k = reciprocal(user_k). Bad news is that different user_k may result in same kernel_k, so we can't get the original user_k back. Good news is that we don't have to do it. What we need to is calculate a user2_k so, that reciprocal(user2_k) == reciprocal(user_k) == kernel_k i.e. if it's re-loaded back the compiled again value will be exactly the same as it was. That said, the user2_k can be calculated like this user2_k = reciprocal(kernel_k) with an exception, that if kernel_k == 0, then user2_k == 1. The optlen argument is treated like this -- when zero, kernel returns the amount of sock_fprog elements in filter, otherwise it should be large enough for the sock_fprog array. changes since v1: * Declared SO_GET_FILTER in all arch headers * Added decode of vlan-tag codes Signed-off-by:
Pavel Emelyanov <xemul@parallels.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jason Wang authored
This patch implements a simple multiqueue flow steering policy - tx follows rx for tun/tap. The idea is simple, it just choose the txq based on which rxq it comes. The flow were identified through the rxhash of a skb, and the hash to queue mapping were recorded in a hlist with an ageing timer to retire the mapping. The mapping were created when tun receives packet from userspace, and was quired in .ndo_select_queue(). I run co-current TCP_CRR test and didn't see any mapping manipulation helpers in perf top, so the overhead could be negelected. Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jason Wang authored
Sometimes usespace may need to active/deactive a queue, this could be done by detaching and attaching a file from tuntap device. This patch introduces a new ioctls - TUNSETQUEUE which could be used to do this. Flag IFF_ATTACH_QUEUE were introduced to do attaching while IFF_DETACH_QUEUE were introduced to do the detaching. Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jason Wang authored
This patch converts tun/tap to a multiqueue devices and expose the multiqueue queues as multiple file descriptors to userspace. Internally, each tun_file were abstracted as a queue, and an array of pointers to tun_file structurs were stored in tun_structure device, so multiple tun_files were allowed to be attached to the device as multiple queues. When choosing txq, we first try to identify a flow through its rxhash, if it does not have such one, we could try recorded rxq and then use them to choose the transmit queue. This policy may be changed in the future. Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jason Wang authored
Add flags to be used by creating multiqueue tuntap device. Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jason Wang authored
RCU were introduced in this patch to synchronize the dereferences between tun_struct and tun_file. All tun_{get|put} were replaced with RCU, the dereference from one to other must be done under rtnl lock or rcu read critical region. This is needed for the following patches since the one of the goal of multiqueue tuntap is to allow adding or removing queues during workload. Without RCU, control path would hold tx locks when adding or removing queues (which may cause sme delay) and it's hard to change the number of queues without stopping the net device. With the help of rcu, there's also no need for tun_file hold an refcnt to tun_struct. Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jason Wang authored
Current tuntap makes use of the socket receive queue as its tx queue. To implement multiple tx queues for tuntap and enable the ability of adding and removing queues during workload, the first step is to move the socket related structures to tun_file. Then we could let multiple fds/sockets to be attached to the tuntap. This patch removes tun_sock and moves socket related structures from tun_sock or tun_struct to tun_file. Two exceptions are tap_filter and sock_fprog, they are still kept in tun_structure since they are used to filter packets for the net device instead of per transmit queue (at least I see no requirements for them). After those changes, socket were created and destroyed during file open and close (instead of device creation and destroy), the socket structures could be dereferenced from tun_file instead of the file of tun_struct structure itself. For persisent device, since we purge during datching and wouldn't queue any packets when no interface were attached, there's no behaviod changes before and after this patch, so the changes were transparent to the userspace. To keep the attributes such as sndbuf, socket filter and vnet header, those would be re-initialize after a new interface were attached to an persist device. Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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