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* net: Optionally use pxe client arch from variableAlexander Graf2016-05-27-7/+15
| | | | | | | | | | | | The client architecture that we pass to a dhcp server depends on the target payload that we want to execute. An EFI binary has a different client arch than a legacy binary or a u-boot binary. So let's parameterize the pxe client arch field to allow an override via the distro script, so that our efi boot path can tell the dhcp server that it's actually an efi firmware. Signed-off-by: Alexander Graf <agraf@suse.de>
* distro: Add efi pxe boot codeAlexander Graf2016-05-27-2/+11
| | | | | | | | | | | | | | | | | | Now that we can expose network functionality to EFI applications, the logical next step is to load them via pxe to execute them as well. This patch adds the necessary bits to the distro script to automatically load and execute EFI payloads. It identifies the dhcp client as a uEFI capable PXE client, hoping the server returns a tftp path to a workable EFI binary that we can then execute. To enable boards that don't come with a working device tree preloaded, this patch also adds support to load a device tree from the /dtb directory on the remote tftp server. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Tom Rini <trini@konsulko.com>
* net: Move CONFIG_SPL_NET_VCI_STRING into KconfigAlexander Graf2016-05-27-0/+3
| | | | | | | This patch also adds the SPL time VCI string into Kconfig. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Tom Rini <trini@konsulko.com>
* net: Fix client identifiers for ARMAlexander Graf2016-05-27-1/+2
| | | | | | | | | | | | | | There are client identifiers specifically reserved for ARM U-Boot according to http://www.ietf.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xml#processor-architecture. So let's actually make use of them rather than the bogus 0x100 that we emitted so far. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Tom Rini <trini@konsulko.com> [trini: Drop the Xilinx define to 0x100 as it's not the correct value to use]. Signed-off-by: Tom Rini <trini@konsulko.com>
* net: Move the VCI and client arch values to KconfigAlexander Graf2016-05-27-0/+12
| | | | | | | | | | | | | We have a bunch of boards that define their vendor class identifier and client archs in the board files or in the distro config. Move everything to the generic Kconfig options. We're missing the distinction between i386 and x86_64, as I couldn't find any config variable that would tell us the difference. Is that really important to people? I guess not, so I left it out. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Tom Rini <trini@konsulko.com>
* bootp: Move vendor class identifier set to functionAlexander Graf2016-05-27-13/+13
| | | | | | | | | Both the dhcp as well as the bootp case add vendor class identifier parameters into their packets. Let's move that into a separate function to make overlaying easier. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Tom Rini <trini@konsulko.com>
* efi_loader: Add network access supportAlexander Graf2016-05-27-2/+6
| | | | | | | | | | | | | We can now successfully boot EFI applications from disk, but users may want to also run them from a PXE setup. This patch implements rudimentary network support, allowing a payload to send and receive network packets. With this patch, I was able to successfully run grub2 with network access inside of QEMU's -M xlnx-ep108. Signed-off-by: Alexander Graf <agraf@suse.de>
* bootp: Prevent u-boot from using others responses.Anton Persson2016-03-27-0/+2
| | | | | | | | In rare circumstances two dhcp clients may generate the same bootp ID. If this happens it is vital that the client also checks the hw address in the received response to prevent IP address conflicts. Signed-off-by: Anton Persson <don.juanton@gmail.com>
* net: bootp: Add environment variable for timeout periodAlexandre Messier2016-02-26-1/+10
| | | | | | | | | | | | | | | There is currently one config option (CONFIG_NET_RETRY_COUNT) that is available to tune the retries of the network stack. Unfortunately, it is global to all protocols, and the value is interpreted differently in all of them. Add a new environment variable that directly sets the retry period for BOOTP timeouts. If this new value is not set, the period is still derived from the default number of retries, or from CONFIG_NET_RETRY_COUNT if defined. When both the new variable is set and CONFIG_NET_RETRY_COUNT is defined, the variable has precedence. Signed-off-by: Alexandre Messier <amessier@tycoint.com>
* microblaze: Correct build error in eth-uclass.cSimon Glass2016-02-06-0/+2
| | | | | | | | | | | | | This fixes the following error when building microblaze-generic: net/eth-uclass.c: In function 'eth_post_probe': net/eth-uclass.c:466:18: error: 'gd' undeclared (first use in this function) ops->start += gd->reloc_off; Fixes: db9391e1 ("net: Move driver-model code into its own file") Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Add bootfile in DHCP RequestAlexandre Messier2016-01-28-0/+1
| | | | | | | | | | | Add the bootfile name in the DHCP Request packet, in addition to it already being sent in the DHCP Discover. This is needed by some DHCP servers so that the bootfile name is properly returned by the server to the client in the DHCP Ack, as expected by U-Boot. Signed-off-by: Alexandre Messier <amessier@tycoint.com>
* net: Rename eth.c to eth_lecacy.cSimon Glass2016-01-28-1/+1
| | | | | | | | | Rename this file to make it clear it is for the old networking drivers and not for use with driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Move driver-model code into its own fileSimon Glass2016-01-28-543/+553
| | | | | | | | | Every other uclass is in its own file. Create a new eth-uclass.c file and move the driver-model code into it, so that networking is consistent. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Move remaining common functions to eth_common.cSimon Glass2016-01-28-104/+113
| | | | | | | | | Move eth_current_changed(), eth_set_current(), eth_mac_skip() and eth_get_name() into the common file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Move environment functions to the common fileSimon Glass2016-01-28-43/+59
| | | | | | | | Move the functions which set ethernet environment variables to the common file. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Move common init into a new eth_common.c fileSimon Glass2016-01-28-28/+53
| | | | | | | | | | Only half of the init is actually common. Move that part into a new common file and call it from driver-model and legacy code. More common functions will be added in future patches. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Don't call board/cpu_eth_init() with driver modelSimon Glass2016-01-28-2/+2
| | | | | | | | | We should avoid weak functions with driver model. Existing boards that use driver model don't need them, so let's kill them off. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: bootp: Ignore packets whose yiaddr is 0Peng Fan2016-01-28-0/+3
| | | | | | | | | | | | | | | | | When doing `dhcp`, there is a bad dhcp server in my network which always reply dhcp request with yiaddr 0, which cause uboot can not successfully get ipaddr from the good dhcp server. But the Linux PC can get the ip address even if there is a bad dhcp server. This patch is to fix that even if there is a bad dhcp server, uboot can still get ipaddr and tftp work ok. The way is to ignore the packets from the bad dhcp server by filtering out the yiaddr whose value is 0. Signed-off-by: Peng Fan <peng.fan@nxp.com> Cc: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Wolfgang Denk <wd@denx.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: remove scary warning about EEPROM provided MAC addressAndre Przywara2016-01-08-2/+0
| | | | | | | | | | | | | | | | | In many parts of the computing world having a unique MAC address sitting in some on-NIC storage is considered the normal case. Remove the warning to not scare the user unnecessarily. This applies to Highbank/Midway and ARM's Juno, for instance. Besides that this fixes the formatting on Midway, for instance, which currently looks like: ... Net: xgmac0 Warning: xgmac0 using MAC address from net device , xgmac1 Warning: xgmac1 using MAC address from net device ... Signed-off-by: Andre Przywara <andre.przywara@arm.com>
* net: Fix delay in net_retry testJoe Hershberger2016-01-07-4/+3
| | | | | | | | | | | | | | | | | Introduced in 45b4773 (net/arp: account for ARP delay, avoid duplicate packets on timeout) Check the arp timeout and adjust the timeout start time before the call to eth_recv() so that the sandbox driver has the opportunity to adjust the sandbox timer after the new start time has been recorded. Also, change the adjustment amount by 11 seconds instead of exactly the 10 seconds that the ping timout is expecting since the timeout check is looking for the time elapsed to be greater than but not equal to the specified delay. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Simon Glass <sjg@chromium.org>
* dm: eth: Stick to 'ethact' when 'ethrotate' is 'no' in eth_init()Bin Meng2016-01-07-4/+20
| | | | | | | | | | When 'ethrotate' variable is set to 'no' and 'ethact' variable is already set to an ethernet device, we should stick to 'ethact'. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
* dm: eth: Test 'ethrotate' before changing current ethernet deviceBin Meng2016-01-07-0/+11
| | | | | | | | | | | In eth_current_changed(), the call to eth_get_dev() below has a side effect of rotating ethernet device if uc_priv->current == NULL. This is not what we want when 'ethrotate' variable is 'no'. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
* dm: net: Fix DM for targets which use MANUAL_RELOCMichal Simek2015-12-18-0/+28
| | | | | | | | All ethernet operation needs to be updated for architectures which requires MANUAL_RELOC. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* Move console definitions into a new console.h fileSimon Glass2015-11-19-0/+1
| | | | | | | | The console includes a global variable and several functions that are only used by a small subset of U-Boot files. Before adding more functions, move the definitions into their own header file. Signed-off-by: Simon Glass <sjg@chromium.org>
* net: eth: Check return value in various placesBin Meng2015-10-29-18/+25
| | | | | | | | | | | eth_get_dev() can return NULL which means device_probe() fails for that ethernet device. Add return value check in various places or U-Boot will crash due to NULL pointer access. With this commit, 'dm_test_eth_act' test case passes. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: eth: Clear MAC address in eth_pre_remove()Bin Meng2015-10-29-0/+5
| | | | | | | | | | | platdata->enetaddr was assigned to a value in dev_probe() last time. If we don't clear it, for dev_probe() at the second time, dm eth will end up treating it as a MAC address from ROM no matter where it came from originally (maybe env, ROM, or even random). Fix this by clearing platdata->enetaddr when removing an Ethernet device. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Increase the size of the net_boot_file_name bufferJacob Stiffler2015-10-29-1/+1
| | | | | | | | | | | The net_boot_file_name buffer is used as storage for the bootfilename command line argument to network boot commands such as tftp and nfs. Increase the size of this buffer to 1024 bytes as the current size of 128 bytes is restrictive for arbitrary paths on the server. Signed-off-by: Jacob Stiffler <j-stiffler@ti.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: parse DHCP options from overloaded file/sname fieldsStefan Brüns2015-10-29-10/+32
| | | | | | | | | | | If Option 52 in the vendor option field signals overloading of the file and/or sname fields, these field may contain additional options. Formatting of file/sname contained options is the same as in the vendor options field, but without the leading magic. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Do not overwrite options found in overloaded 'file' fieldStefan Brüns2015-10-29-26/+18
| | | | | | | | If 'file' is overloaded, it is wrong to get or put the bootfile name from it/to it. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: change the env name to use constJosh Wu2015-10-28-2/+2
| | | | | | | | As we don't modify the 'name' parameter, so change it to const. Signed-off-by: Josh Wu <josh.wu@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net/eth: fix a bug in on_ethaddr()Gong Qianyu2015-10-28-0/+1
| | | | | | | | | The loop should check all ethenet devices, not only the first device, to set each specified ethaddr, or it'll cause failure when we use other devices. Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: cancel timeout handler after DHCPACKStefan Brüns2015-10-28-0/+1
| | | | | | | | | Timeout handler should be stopped after reception of DHCPACK. If "autoload" is not set, the handler is immediately replaced by the TFTP handler, otherwise it may trigger before the next boot stage begins. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net/arp: account for ARP delay, avoid duplicate packets on timeoutStefan Brüns2015-10-28-4/+7
| | | | | | | | | | | eth_rx() in the main reception loop may trigger sending a packet which is already timed out (or will immediately) upon reception of an ARP reply. As long as the ARP reply is pending, the timeout handler of a packet should be postponed. Happens on TFTP with bad network (e.g. WLAN). Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net/arp: Do not run net_start_again() on timeoutStefan Brüns2015-10-28-1/+1
| | | | | | | net_start_again() will be called from net_loop() if state is NETLOOP_FAIL. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Fix parsing of Bootp/DHCP option 0 (Pad)Stefan Brüns2015-10-28-1/+10
| | | | | | | Pad has no len byte, so the normal parsing code fails. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: send RFC1542 compliant value for bootp requestsStefan Brüns2015-10-28-2/+6
| | | | | | | | | | | RFC1542, 3.2: "The 'secs' field of a BOOTREQUEST message SHOULD represent the elapsed time, in seconds, since the client sent its first BOOTREQUEST message. Note that this implies that the 'secs' field of the first BOOTREQUEST message SHOULD be set to zero." Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: reject Bootp/DHCP packets with bad OP valueStefan Brüns2015-10-28-8/+5
| | | | | | | | | | | Rename check_packet to check_reply_packet to make its function more obvious. The check for DHCP_* values is completely off, as it should compare against DHCP option 53 (Message Type). Only valid value for any Bootp/DHCP reply is BOOTREPLY. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: protect status led access in bootpThomas Chou2015-10-28-1/+1
| | | | | | | This fixes the error when STATUS_LED_BOOT is not defined. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: bootp fix vci string on SPL-BootHannes Petermaier2015-10-28-1/+3
| | | | | | | | | | | | | | | | If CONFIG_CMD_DHCP is enabled, the vci (vendor-class-identifier) string isn't inserted into the bootp-packet during SPL stage because the CONFIG_BOOTP_VCI_STRING instead CONFIG_SPL_NET_VCI_STRING We fix this with testing for CONFIG_SPL_BUILD and testing for existing CONFIG_SPL_NET_VCI_STRING. Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Tom Rini <trini@konsulko.com>
* net: TFTP: variables cleanup and additionAlbert ARIBAUD \(3ADEV\)2015-10-28-2/+25
| | | | | | | | | | | | | | | | | | | TFTP source and destination port variable names are 'tftpsrcp' and 'tftpdstp' in the code, but 'tftpsrcport' and 'tftpdstport' in the README file. Fix the README. Add environment variable 'tftptimeoutcountmax'. As per the comments about the global variable tftp_timeout_count_max, make sure tftptimeoutcountmax is nonnegative. Introduce configuration option CONFIG_NET_TFTP_VARS, which controls whether environment variables tftpblocksize, tftptimeout, and tftptimoueoutcountmax are read by the TFTP client code. CONFIG_NET_TFTP_VARS defaults to y but can be set to n by targets with to tight size contraints. Make bf527-ezkit set CONFIG_NET_TFTP_VARS to n to keep the target size below limit.
* net: support NETCONSOLE option via KconfigBernhard Nortmann2015-09-29-0/+6
| | | | | | | | | | | | | | This patch introduces CONFIG_NETCONSOLE as an option to the Kconfig system. Joe Hershberger pointed out that it may not be entirely free of problems, as many boards predating the driver model define this symbol directly via include files. In case they're not properly migrated, their NetConsole might 'vanish' if they start to use CONFIG_NET or CONFIG_NETDEVICES. Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: expose eth_is_active() function to test network device stateBernhard Nortmann2015-09-29-1/+17
| | | | | | | | | | | | | | | | | | | | The previous eth_device struct returned by eth_get_dev() allowed code to directly query the state member field. However, with CONFIG_DM_ETH this data gets encapsulated (i.e. private), and eth_get_dev() returns a udevice struct 'abstraction' instead. This breaks legacy code relying on the former behaviour - e.g. netconsole. (see http://lists.denx.de/pipermail/u-boot/2015-June/216528.html) The patch introduces a method to retrieve the ethernet device state in a 'clean' and uniform way, supporting both legacy code and driver model. The new function eth_is_active() accepts a device struct pointer and tests it for ETH_STATE_ACTIVE. Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* dm: eth: Correctly detect alias in eth_get_dev_by_name()Bin Meng2015-09-09-2/+3
| | | | | | | | When given a device name string, we should test to see if it is really an alias like "eth#". Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* dm: eth: Do not print misleading "Net Initialization Skipped"Bin Meng2015-09-09-0/+2
| | | | | | | | With driver model, board_eth_init() or cpu_eth_init() is not a must. Thus we don't need print a misleading "Net Initialization Skipped". Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Revert "tftp: adjust settings to be suitable for 100Mbit ethernet"Bin Meng2015-09-09-5/+5
| | | | | | | | | | | | | | | | | | | | | Commit 620776d "tftp: adjust settings to be suitable for 100Mbit ethernet" causes the following error message when trying to load a file using 'tftp' command via a tftp server. TFTP error: 'Unsupported option(s) requested' (8) This is due to with commit 620776d changes, the tftp option 'timeout' value is now set to zero which is an invalid value as per RFC2349 [1]. Valid values range between "1" and "255" seconds, inclusive. With some tftp servers that strictly implement the RFC requirement, it reports such an error message. Revert commit 620776d for RFC compliance. [1] https://www.ietf.org/rfc/rfc2349.txt Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: tftp: Move tftp.h file from ./net to ./include/netLukasz Majewski2015-09-07-34/+4
| | | | | | | | | | This change gives the ability to reuse the <tftp.h> header file by other subsystems (like e.g. dfu). Without this change compilation error emerges for the legacy update.c file. Signed-off-by: Lukasz Majewski <l.majewski@majess.pl> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Return -EINTR when ctrl+c is pressedMichal Simek2015-08-21-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Current behavior is that if CTRL+C is pressed command returns 0 that was successful which is not correct behavior. The easiest test case is "tftpboot 80000 uImage && echo yes" and press CTRL+C. Then the second command is called which is incorrect. Error log: zynq-uboot> tftpb 80000 uImage && echo yes Gem.e000b000:7 is connected to Gem.e000b000. Reconnecting to Gem.e000b000 Gem.e000b000 Waiting for PHY auto negotiation to complete....... done Using Gem.e000b000 device TFTP from server 192.168.0.102; our IP address is 192.168.0.101 Filename 'uImage'. Load address: 0x80000 Loading: ################ Abort yes zynq-uboot> This patch adds -EINTR return value when CTRL+C is pressed. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Tom Rini <trini@konsulko.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* tftp: adjust settings to be suitable for 100Mbit ethernetPavel Machek2015-08-21-5/+5
| | | | | | | | | | | | | | | | Adjust timouts and retry counts to be suitable for loaded ethernet network. With 5 seconds timeout, 10 retries maximum, tftp is impossible even on local network with single full-speed TCP connection. 100msec timeout should be suitable for most networks tftp is used on, that is local ethernets. Timeout count really needs to be way higher, as lost packets are normal when TCP is running over the same network. Enforce 10msec minimum. Signed-off-by: Pavel Machek <pavel@denx.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* tftp.c: fix CONFIG_TFTP_TSIZE for small filesMax Krummenacher2015-08-12-0/+2
| | | | | | | | | | | | | | | | | CONFIG_TFTP_TSIZE should limit a tftp downloads progress to 50 '#' chars. Make this work also for small files. If the file size is small, i.e. smaller than 2 tftp block sizes the number of '#' can get much larger. i.e. with a 1 byte file 65000 characters are printed, with a 512 byte file around 500. When using CONFIG TFTP BLOCKSIZE together with CONFIG_IP_DEFRAG the issue is more notable. Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com> Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Reviewed-by: Marek Vasut <marex@denx.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net: Allow drivers to return -ENOSYS with the write_hwaddr() methodSimon Glass2015-07-21-0/+6
| | | | | | | | | | | | Some drivers may want to implement this method for some of their devices but not for others. So it is not possible to just leave the operation out of the table. Drivers could get around this by masquerading as two separate drivers but that seems unpleasant. Allow the driver to return an error when it does not want to process the write_hwaddr() method. Signed-off-by: Simon Glass <sjg@chromium.org>
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