u-boot.git/net/arp.c, branch v2012.07

net: fix typo in arp clean up

2012-07-10T15:14:56+00:00

The clean up patch missed an &, so we end up passing an int rather than
a pointer to the sprintf function.

arp.c: In function 'ArpReceive':
arp.c:197: warning: format '%p' expects type 'void *', but argument 3 has type 'int'

Signed-off-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: Work-around for brain-damaged Cisco equipment with arp-proxy

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

Cisco's arp-proxy feature fails to ignore the link-local address range
This means that a link-local device on a network with this Cisco
equipment will reply to ARP requests for our device (in addition to
our reply).
If we happen to reply first, the requester's ARP table will be
populated with our MAC address, and one packet will be sent to us...
shortly following this, the requester will get an ARP reply from the
Cisco equipment telling the requester to send packets their way
instead of to our device from now on.
This work-around detects this link-local condition and will delay
replying to the ARP request for 5ms so that the first packet is sent
to the Cisco equipment and all following packets are sent to our
device.

Signed-off-by: Joe Hershberger

net: Separate ArpRequest() into lower-level func

2012-05-23T22:53:07+00:00

Link-local support will need to send ARP packets, but needs more
fine-grained control over the contents.  Split the implementation
into 2 parts so link-local can share the code.

Signed-off-by: Joe Hershberger

net: Don't copy every packet that waits for an ARP

2012-05-23T22:53:07+00:00

Use the NetArpTxPacket for the ARP packet, not to hold what used to
be in NetTxPacket.
This saves a copy and makes the code easier to understand.

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

net: Remove static allocation for MAC address in PingSend()

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

Don't force ARP clients to return the MAC address if they don't care
(such as ping)

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

net: Add net_update_ether() to handle ARP and Ping replies

2012-05-23T22:53:04+00:00

When the network is VLAN or SNAP, net_update_ether() will preserve
the original Ethernet packet header and simply replace the src and
dest MACs and the protocol

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

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 use NetSendPacket instead of eth_send directly

2012-05-23T22:46:20+00:00

Use this entry-point consistently across the net/ code
Use a static inline function to preserve code size

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

net: Refactor packet length computations

2012-05-23T22:46:19+00:00

Save the length when it is computed instead of forgetting it and
subtracting pointers to figure it out again.

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