u-boot.git/net/net.c, branch v2010.09

ip/defrag: fix processing of last short fragment

2010-06-21T05:11:32+00:00

TFTP'ing a file of size 1747851 bytes with CONFIG_IP_DEFRAG and
CONFIG_TFTP_BLOCKSIZE set to 4096 fails with a timeout, because
the last fragment is not taken into account. This patch fixes
IP fragments having less than 8 bytes of payload.

Signed-off-by: Stephane Fillod 
Acked-by: Alessandro Rubini 
Signed-off-by: Ben Warren

./net/net.c - make Microsoft dns servers happy with random_port() numbers

2010-05-03T21:52:48+00:00

For some reason, (which I can't find any documentation on), if U-Boot
gives a port number higher than 17500 to a Microsoft DNS server, the
server will reply to port 17500, and U-Boot will ignore things (since
that isn't the port it asked the DNS server to reply to).

This fixes that by ensuring the random port number is less than 17500.

Signed-off-by:  Robin Getz 
Signed-off-by: Ben Warren

Make getenv_IPaddr() global

2010-01-17T19:14:47+00:00

There are boards out there that do not have network support in
U-Boot (CONFIG_CMD_NET not set), but they do so in Linux. This
makes it desirable to be able to port network configuration (like
the IP address) to the Linux kernel.

We should not make the passing of the IP configuration to Linux
dependent on U-Boot features / settings.

For this, make getenv_IPaddr() global. This fixes build error

u-boot/lib_xxx/board.c:360: undefined reference to `getenv_IPaddr'

on various architectures.

Signed-off-by: Dirk Behme 
Acked-by: Ben Warren

net: pull CONFIG checks out of source and into makefile

2009-12-14T05:31:26+00:00

Signed-off-by: Mike Frysinger 
Signed-off-by: Ben Warren

Repair the 'netretry=once' option.

2009-11-24T22:04:11+00:00

'netretry = once' does the same as 'netretry = yes', because it is not stored
when it was tried once.

Signed-off-by: Remy Bohmer 
Signed-off-by: Ben Warren

net: defragment IP packets

2009-08-25T20:35:54+00:00

The defragmenting code is enabled by CONFIG_IP_DEFRAG; the code is
useful for TFTP and NFS transfers.  The user can specify the maximum
defragmented payload as CONFIG_NET_MAXDEFRAG (default 16k).
Since NFS has a bigger per-packet overhead than TFTP, the static
reassembly buffer can hold CONFIG_NET_MAXDEFRAG + the NFS overhead.

The packet buffer is used as an array of "hole" structures, acting as
a double-linked list. Each new fragment can split a hole in two,
reduce a hole or fill a hole. No support is there for a fragment
overlapping two diffrent holes (i.e., thre new fragment is across an
already-received fragment).

Signed-off-by: Alessandro Rubini 
Signed-off-by: Ben Warren

minor debug cleanups in ./net

2009-08-08T00:32:16+00:00

 Minor ./net cleanups - no functional changes
  - change #ifdef DEBUG printf(); #endif to just debug()
  - changed __FUNCTION__ to __func__
  - got rid of extra whitespace between function and opening brace
  - removed unnecessary braces on if statements

 gcc dead code elimination should make this functionally/size equivalent
 when DEBUG is not defined. (confirmed on Blackfin, with gcc 4.3.3).

 Signed-off-by: Robin Getz 

Signed-off-by: Ben Warren

Save server's MAC address in environment

2009-07-23T06:17:01+00:00

Linux's netconsole works much better when you can pass it the MAC address of
the server. (otherwise it just uses broadcast, which everyone else on my
network complains about :)

This sets the env var "serveraddr" (to match ethaddr), so that you can pass
it to linux with whatever bootargs you want to....

addnetconsole=set bootargs $(bootargs) netconsole=@$(ipaddr)/eth0,@$(serverip)/$(serveraddr)

Signed-of-by: Robin Getz 

Signed-off-by: Ben Warren

DHCP regression on 2009-06

2009-07-23T05:53:45+00:00

Fixed the DHCP/BOOTP/RARP regression introduced in u-boot-2009.06
by initializing our IP addr to 0 in order to accept any IP addr
assigned to us by the DHCP/BOOTP/RARP server.

Ack-by: Robin Getz 
Signed-off-by: Michael Zaidman 
Signed-off-by: Ben Warren

Add DNS support

2009-07-23T05:53:44+00:00

On 04 Oct 2008 Pieter posted a dns implementation for U-Boot.

http://www.mail-archive.com/u-boot-users@lists.sourceforge.net/msg10216.html
>
> DNS can be enabled by setting CFG_CMD_DNS. After performing a query,
> the serverip environment var is updated.
>
> Probably there are some cosmetic issues with the patch. Unfortunatly I
> do not have the time to correct these. So if anybody else likes DNS
> support in U-Boot and has the time, feel free to patch it in the main tree.

Here it is again - slightly modified & smaller:
  - update to 2009-06 (Pieter's patch was for U-Boot 1.2.0)
  - README.dns is added
  - syntax is changed (now takes a third option, the env var to store
    the result in)
  - add a random port() function in net.c
  - sort Makefile in ./net/Makefile
  - dns just returns unless a env var is given
  - run through checkpatch, and clean up style issues
  - remove packet from stack
  - cleaned up some comments
  - failure returns much faster (if server responds, don't wait for
    timeout)
  - use built in functions (memcpy) rather than byte copy.

Signed-off-by: Robin Getz 
Signed-off-by: Pieter Voorthuijsen 
Signed-off-by: Ben Warren