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2019-01-24net: explicitly assign errno to return code in case of network failureThomas RIENOESSL
When dealing with two ethernet ports and having "netretry" set to "once", it could occur that the connection (e.g. an ARP request) failed, hence the status of the netloop was "NETLOOP_FAIL". Due to the setting of "netretry", the network logic would then switch to the other network interface, assigning "ret" with the return value of "net_start_again()". If this call succeeded we would return 0 (i.e. success) to the caller when in reality the network action failed. Signed-off-by: Thomas RIENOESSL <thomas.rienoessl@bachmann.info> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-10-10net: Don't overwrite waiting packets with asynchronous repliesJoe Hershberger
Peter originally sent a fix, but it breaks a number of other things. This addresses the original reported issue in a different way. That report was: > U-Boot has 1 common buffer to send Ethernet frames, pointed to by > net_tx_packet. When sending to an IP address without knowing the MAC > address, U-Boot makes an ARP request (using the arp_tx_packet buffer) > to find out the MAC address of the IP addressr. When a matching ARP > reply is received, U-Boot continues sending the frame stored in the > net_tx_packet buffer. > > However, in the mean time, if U-Boot needs to send out any network > packets (e.g. replying ping packets or ARP requests for its own IP > address etc.), it will use the net_tx_packet buffer to prepare the > new packet. Thus this buffer is no longer the original packet meant > to be transmitted after the ARP reply. The original packet will be > lost. This instead uses the ARP tx buffer to send async replies in the case where we are actively waiting for an ARP reply. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reported-by: Tran Tien Dat <peter.trantiendat@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-10test: eth: Add a test for the target being pingedJoe Hershberger
The target will respond to pings while doing other network handling. Make sure that the response happens and is correct. This currently corrupts the ongoing operation of the device if it happens to be awaiting an ARP reply of its own to whatever serverip it is attempting to communicate with. In the test, add an expectation that the user operation (ping, in this case) will fail. A later patch will address this problem. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-10test: eth: Add a test for ARP requestsJoe Hershberger
This tests that ARP requests made to this target's IP address are responded-to by the target when it is doing other networking operations. This currently corrupts the ongoing operation of the device if it happens to be awaiting an ARP reply of its own to whatever serverip it is attempting to communicate with. In the test, add an expectation that the user operation (ping, in this case) will fail. A later patch will address this problem. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-27Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTRTom Rini
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-06test/dm: Fix string handling issues in the eth testTom Rini
Coverity scan has identified potential buffer overruns in these tests. Correct this by zeroing our buffer and using strncpy not strcpy. Reported-by: Coverity (CID: 155462, 155463) Cc: Joe Hershberger <joe.hershberger@ni.com> Cc: Simon Glass <sjg@chromium.org> Cc: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2017-08-16env: Rename getenv/_f() to env_get()Simon Glass
We are now using an env_ prefix for environment functions. Rename these two functions for consistency. Also add function comments in common.h. Quite a few places use getenv() in a condition context, provoking a warning from checkpatch. These are fixed up in this patch also. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16env: Rename setenv() to env_set()Simon Glass
We are now using an env_ prefix for environment functions. Rename setenv() for consistency. Also add function comments in common.h. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
2017-04-04dm: core: Add flags parameter to device_remove()Stefan Roese
This patch adds the flags parameter to device_remove() and changes all calls to this function to provide the default value of DM_REMOVE_NORMAL for "normal" device removal. This is in preparation for the driver specific pre-OS (e.g. DMA cancelling) remove support. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
2015-10-29dm: test: Add a new test case against dm eth codes for NULL pointer accessBin Meng
U-Boot crashes when doing a 'ping' with the following test scenario: - All ethernet devices are not probed - "ethaddr" for all ethernet devices are not set - "ethact" is set to a valid ethernet device name Add a new test case 'dm_test_eth_act' to hit such scenario. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2015-09-09dm: test: Add a new test case for dm_test_eth_rotateBin Meng
Add one more ethernet device node in the sandbox test device tree, with name 'sbe5'. This is to support a new test case for testing network device rotation. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2015-05-21test: dm: eth: Handle failed test env cleanupJoe Hershberger
Make sure that the env gets cleaned up after a test fails so that other tests aren't affected. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2015-05-21test: Generalize the unit test frameworkJoe Hershberger
Separate the ability to define tests and assert status of test functions from the dm tests so they can be used more consistently throughout all tests. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-21net: Apply default format rules to all ethaddrJoe Hershberger
Use a regular expression to apply the default formatting flags for all ethaddr env vars. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-05test: dm: eth: Skip timeouts on ping testsJoe Hershberger
Indicate to the emulated sandbox Ethernet driver when we expect a timeout and tell it to leap forward. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org>
2015-04-18net: cosmetic: Fix checkpatch.pl failures in net.cJoe Hershberger
Finish eliminating CamelCase from net.c and other failures Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org>
2015-04-18net: cosmetic: Change IPaddr_t to struct in_addrJoe Hershberger
This patch is simply clean-up to make the IPv4 type that is used match what Linux uses. It also attempts to move all variables that are IP addresses use good naming instead of CamelCase. No functional change. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org>
2015-04-18net: Improve error handlingJoe Hershberger
Take a pass at plumbing errors through to the users of the network stack Currently only the start() function errors will be returned from NetLoop(). recv() tends not to have errors, so that is likely not worth adding. send() certainly can return errors, but this patch does not attempt to plumb them yet. halt() is not expected to error. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-04-18test: dm: net: Add a test of the netretry behaviorJoe Hershberger
The effect of the "netretry" env var was recently changed. This test checks that behavior. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-04-18test: dm: eth: Add testing for ethrotate env varJoe Hershberger
Make sure that the ethrotate behavior occurs as expected. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-04-18dm: eth: Add support for ethprime env varJoe Hershberger
The ethprime env var is used to indicate the starting device if none is specified in ethact. Also support aliases specified in the ethprime var. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-04-18dm: eth: Add support for aliasesJoe Hershberger
Allow network devices to be referred to as "eth0" instead of "eth@12345678" when specified in ethact. Add tests to verify this behavior. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-04-18test: dm: eth: Add tests for the eth dm implementationJoe Hershberger
Add a test for the eth uclass using the sandbox eth driver. Verify basic functionality of the network stack / eth uclass by exercising the ping function. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>