u-boot.git/drivers/net/netconsole.c, branch v2012.10

net: Filter incoming netconsole packets by IP

2012-09-24T18:55:44+00:00

Check the incoming packets' source IP address... if ncip isn't set to a
broadcast address, only listen to the client at ncip.

Signed-off-by: Joe Hershberger

net: Allow netconsole settings to change after nc_start

2012-09-24T18:55:43+00:00

Refresh the netconsole settings from the env before each packet instead
of only on netconsole init.

Signed-off-by: Joe Hershberger

net: Improve the speed of netconsole

2012-09-24T18:55:43+00:00

Previously u-boot would initialize the network interface for every
network operation and then shut it down again.  This makes sense for
most operations where the network in not known to be needed soon after
the operation is complete.  In the case of netconsole, it will use the
network for every interaction with the shell or every printf.  This
means that the network is being reinitialized very often.  On many
devices, this intialization is very slow.

This patch checks for consecutive netconsole actions and leaves the
ethernet hardware initialized between them.  It will still behave the
same old way for all other network operations and any time another
network operation happens between netconsole operations.

Signed-off-by: Joe Hershberger 
Cc: Stefano Babic 
Acked-by: Stefano Babic

net: Make the netconsole buffer size configurable

2012-09-24T18:55:43+00:00

Allow a board to configure a larger buffer for netconsole, but leave
the default.

Signed-off-by: Joe Hershberger 
Cc: Mike Frysinger 
Acked-by: Mike Frysinger

net: Make netconsole src and dest ports configurable

2012-09-24T18:17:24+00:00

It is desirable to use different port numbers for sending and receiving
packets with netconsole in the case where you have more than one device
on the local subnet with netconsole enabled for broadcast.  When they
use the same port for both, any output from one will look like input to
the other.  This is typlically not desirable.

This patch allows the input and output ports to be specified separately
in the environment.

Signed-off-by: Joe Hershberger 
Cc: Mike Frysinger 
Acked-by: Mike Frysinger

net: Allow filtering on debug traces in the net subsystem

2012-05-23T22:53:08+00:00

Add several levels of DEBUG prints so that you can limit the noise to
the severety of your problem.

DEBUG_LL_STATE = Link local state machine changes
DEBUG_DEV_PKT = Packets or info directed to the device
DEBUG_NET_PKT = Packets on info on the network at large
DEBUG_INT_STATE = Internal network state changes

Signed-off-by: Joe Hershberger

net: Make sure NetLoop is initialized when using NetConsole

2012-05-23T22:53:06+00:00

Fix NetConsole bug that causes first packet header to claim a
source IP address of 0.0.0.0

Signed-off-by: Joe Hershberger

net: Refactor to separate the UDP handler from the ARP handler

2012-05-23T22:52:53+00:00

Call a built-in dummy if none is registered... don't require
protocols to register a handler (eliminating dummies)
NetConsole now uses the ARP handler when waiting on arp
(instead of needing a #define hack in arp.c)
Clear handlers at the end of net loop

Signed-off-by: Joe Hershberger 
Acked-by: Simon Glass

net: Refactor to protect access to the NetState variable

2012-05-23T22:46:21+00:00

Changes to NetState now go through an accessor function called
net_set_state()

Signed-off-by: Joe Hershberger

net: cosmetic: Un-typedef IP_t

2012-05-23T22:46:00+00:00

Rename IP header related things to IP_UDP. The existing definition
of IP_t includes UDP header, so name it to accurately describe the
structure.

Signed-off-by: Joe Hershberger