upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support

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Thierry Reding 92ac8acc01 net: More BOOTP retry timeout improvements ... It's not unusual for DHCP servers to take a couple hundred milliseconds to respond to DHCP discover messages. One possible reason for the delay can be that the server checks (typically using an ARP request) that the IP it's about to hand out isn't in use yet. To make matters worse, some servers may also queue up requests and process them sequentially, which can cause excessively long delays if clients retry too fast. Commit f59be6e850 ("net: BOOTP retry timeout improvements") shortened the retry timeouts significantly, but the BOOTP/DHCP implementation in U-Boot doesn't handle that well because it will ignore incoming replies to earlier requests. In one particular setup this increases the time it takes to obtain a DHCP lease from 630 ms to 8313 ms. This commit attempts to fix this in two ways. First it increases the initial retry timeout from 10 ms to 250 ms to give DHCP servers some more time to respond. At the same time a cache of outstanding DHCP request IDs is kept so that the implementation will know to continue transactions even after a retransmission of the DISCOVER message. The maximum retry timeout is also increased from 1 second to 2 seconds. An ID cache of size 4 will keep DHCP requests around for 8 seconds (once the maximum retry timeout has been reached) before dropping them. This should give servers plenty of time to respond. If it ever turns out that this isn't enough, the size of the cache can easily be increased. With this commit the DHCP lease on the above-mentioned setup still takes longer (1230 ms) than originally, but that's an acceptable compromise to improve DHCP lease acquisition time for a broader range of setups. To make it easier to benchmark DHCP in the future, this commit also adds the time it took to obtain a lease to the final "DHCP client bound to address x.x.x.x" message. Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>		10 years ago
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Makefile	kbuild: use Linux Kernel build scripts	11 years ago
arp.c	net/: sparse fixes	12 years ago
arp.h	net: Separate ArpRequest() into lower-level func	13 years ago
bootp.c	net: More BOOTP retry timeout improvements	10 years ago
bootp.h	net: BOOTP retry timeout improvements	10 years ago
cdp.c	net: Refactor to separate the UDP handler from the ARP handler	13 years ago
cdp.h	…
dns.c	net: Refactor to separate the UDP handler from the ARP handler	13 years ago
dns.h	Add GPL-2.0+ SPDX-License-Identifier to source files	12 years ago
eth.c	Ethernet: let user know if there is no valid ethernet address	11 years ago
link_local.c	net: Correct check for link-local target IP conflict	12 years ago
link_local.h	net: Add link-local addressing support	13 years ago
net.c	net: BOOTP retry timeout improvements	10 years ago
net_rand.h	net: use common rand()/srand() functions	13 years ago
nfs.c	net: nfs: add dynamic wait period	12 years ago
nfs.h	Add GPL-2.0+ SPDX-License-Identifier to source files	12 years ago
ping.c	net: Allow filtering on debug traces in the net subsystem	13 years ago
ping.h	net/: sparse fixes	12 years ago
rarp.c	Add GPL-2.0+ SPDX-License-Identifier to source files	12 years ago
rarp.h	Add GPL-2.0+ SPDX-License-Identifier to source files	12 years ago
sntp.c	net: Refactor to separate the UDP handler from the ARP handler	13 years ago
sntp.h	Add GPL-2.0+ SPDX-License-Identifier to source files	12 years ago
tftp.c	net: tftpsrv: Get correct client MAC address	11 years ago
tftp.h	net/: sparse fixes	12 years ago