[RFC v2 16/16] sandbox_defconfig: switch to picotcp

[Antony Pavlov]

Picotcp sandbox barebox howto
=============================

Compile sandbox barebox:

  $ cd barebox.git
  $ unset ARCH
  $ unset CROSS_COMPILE
  $ make sandbox_defconfig
  ...
  $ make

Run barebox:

  $ su
  # ./barebox

Testing ping
------------

While sandbox barebox is running setup a IP-address
for your host 'barebox' network interface, e.g.:

  # ifconfig barebox 192.168.1.1

Next, in sandbox barebox console setup network interface
and try to ping host:

  barebox:/ ifconfig eth 192.168.1.2 255.255.255.0
  Assigned ipv4 192.168.1.2 to device eth
  barebox:/ picoping 192.168.1.1
  48 bytes from 192.168.1.1: icmp_req=1 ttl=64 time=1 ms
  ...
  48 bytes from 192.168.1.1: icmp_req=10 ttl=64 time=0 ms

Testing domain name resolving
-----------------------------

Install simple maradns name server on the host.

Edit /etc/maradns/mararc config file, add these lines:

  csv2 = {}
  csv2["example.com."] = "db.example.com"

  bind_address = "192.168.1.1"

Edit /etc/maradns/db.example.com, add these lines:

  example.com. 192.168.1.1 ~
  www.example.com. 192.168.1.1 ~
  barebox.example.com. 192.168.1.2 ~

Run sandbox barebox and setup the www.example.com IP-address
for your host 'barebox' network interface, e.g.:

  # ifconfig barebox 192.168.1.1

Restart maradns:

  $ /etc/init.d/maradns restart

Check name resolution:

  barebox at barebox sandbox:/ ifconfig eth 192.168.1.2 255.255.255.0
  Assigned ipv4 192.168.1.2 to device eth
  barebox at barebox sandbox:/ net.nameserver=192.168.1.1
  barebox at barebox sandbox:/ host barebox.example.com
  barebox.example.com is at 192.168.1.2
  barebox at barebox sandbox:/ host www.example.com
  www.example.com is at 192.168.1.1

The same checks for barebox legacy network stack:

  barebox at barebox sandbox:/ eth0.ipaddr=192.168.1.2
  barebox at barebox sandbox:/ eth0.serverip=192.168.1.1
  barebox at barebox sandbox:/ net.domainname=example.com
  barebox at barebox sandbox:/ net.nameserver=192.168.1.1
  barebox at barebox sandbox:/ host barebox.example.com
  warning: No MAC address set. Using random address 9a:a1:86:31:05:1e
  barebox.example.com is at 192.168.1.2
  barebox at barebox sandbox:/ host www.example.com
  www.example.com is at 192.168.1.1

Testing dhcp (ad memorandum)
----------------------------

Configure your host dhcp server, e.g. add this
to your /etc/dhcp/dhcpd.conf:

  subnet 192.168.1.0 netmask 255.255.255.0 {
    range dynamic-bootp 192.168.1.26 192.168.1.29;
    option routers 192.168.1.1;
    option broadcast-address 192.168.1.255;
    default-lease-time 600;
    max-lease-time 7200;
  }

While sandbox barebox is running setup a IP-address
for your host 'barebox' network interface and restart
your host dhcp server, e.g.:

  # ifconfig barebox 192.168.1.1
  # /etc/init.d/isc-dhcp-server restart

Next, in your sandbox barebox console run 'dhclient':

  barebox:/ dhclient eth
  Assigned ipv4 0.0.0.0 to device eth
  Assigned ipv4 192.168.1.26 to device eth
  DHCP client: renewal time (T1) 300
  DHCP client: rebinding time (T2) 525
  DHCP client: lease time 496
  DHCP client: IP assigned by the server: 192.168.1.26

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
 arch/sandbox/configs/sandbox_defconfig | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/sandbox/configs/sandbox_defconfig b/arch/sandbox/configs/sandbox_defconfig
index d82579b..320a22b 100644
--- a/arch/sandbox/configs/sandbox_defconfig
+++ b/arch/sandbox/configs/sandbox_defconfig
@@ -36,10 +36,7 @@ CONFIG_CMD_LET=y
 CONFIG_CMD_MSLEEP=y
 CONFIG_CMD_READF=y
 CONFIG_CMD_SLEEP=y
-CONFIG_CMD_DHCP=y
 CONFIG_CMD_HOST=y
-CONFIG_CMD_PING=y
-CONFIG_CMD_TFTP=y
 CONFIG_CMD_ECHO_E=y
 CONFIG_CMD_EDIT=y
 CONFIG_CMD_MENU=y
@@ -61,8 +58,13 @@ CONFIG_CMD_OFTREE=y
 CONFIG_CMD_TIME=y
 CONFIG_CMD_SPD_DECODE=y
 CONFIG_NET=y
+CONFIG_NET_PICOTCP=y
 CONFIG_NET_NFS=y
 CONFIG_NET_NETCONSOLE=y
+CONFIG_CMD_PICOTCP_TEST_IPV4=y
+CONFIG_CMD_PICOTCP_IFCONFIG=y
+CONFIG_CMD_PICOTCP_PING=y
+CONFIG_CMD_PICOTCP_ROUTE=y
 CONFIG_OFDEVICE=y
 CONFIG_OF_BAREBOX_DRIVERS=y
 CONFIG_DRIVER_NET_TAP=y
-- 
2.1.4