u-boot.git/net/ping.c, branch v2015.01

SPDX License cleanup for LiMon imported files

2014-10-10T13:44:43+00:00

A number of network related files were imported from the LiMon
project; these contain a somewhat unclear license statement:

	Copyright 1994 - 2000 Neil Russell.
	(See License)

I analyzed the source code of LiMon v1.4.2 which was used for this
import.  It does not contain any "License" file, but the top level
directory contains a file "COPYING", which turns out to be GPL v2
of June 1991.  So it is legitimate to conclude that the LiMon derived
files are also to be released under GPLv2.  Mark them as such.

Signed-off-by: Wolfgang Denk

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: 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 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: 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 ping receive handler

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

There is no need to call through the handler... inline it

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

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

net: Refactor IP, UPD, and ICMP header writing functions

2012-05-23T22:46:18+00:00

ICMP (ping) was reimplementing IP header code... it now shares code.

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