diff options
author | Robin Getz <rgetz@blackfin.uclinux.org> | 2009-07-20 18:53:54 (GMT) |
---|---|---|
committer | Ben Warren <biggerbadderben@gmail.com> | 2009-07-23 05:53:44 (GMT) |
commit | 1a32bf41881b5dbe3119cb77a33572b4d462cabf (patch) | |
tree | dda370cbcb7a6614e111ad2399661392322bab0b /net/net.c | |
parent | 88ad3fd91c83a4343b25385fd78fd8e29ebb723f (diff) | |
download | u-boot-fsl-qoriq-1a32bf41881b5dbe3119cb77a33572b4d462cabf.tar.xz |
Add DNS support
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 <rgetz@blackfin.uclinux.org>
Signed-off-by: Pieter Voorthuijsen <pieter.voorthuijsen@prodrive.nl>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'net/net.c')
-rw-r--r-- | net/net.c | 29 |
1 files changed, 29 insertions, 0 deletions
@@ -92,6 +92,9 @@ #if defined(CONFIG_CDP_VERSION) #include <timestamp.h> #endif +#if defined(CONFIG_CMD_DNS) +#include "dns.h" +#endif #if defined(CONFIG_CMD_NET) @@ -291,6 +294,9 @@ NetInitLoop(proto_t protocol) NetServerIP = getenv_IPaddr ("serverip"); NetOurNativeVLAN = getenv_VLAN("nvlan"); NetOurVLAN = getenv_VLAN("vlan"); +#if defined(CONFIG_CMD_DNS) + NetOurDNSIP = getenv_IPaddr("dnsip"); +#endif env_changed_id = env_id; } @@ -426,6 +432,11 @@ restart: SntpStart(); break; #endif +#if defined(CONFIG_CMD_DNS) + case DNS: + DnsStart(); + break; +#endif default: break; } @@ -1518,6 +1529,14 @@ static int net_check_prereq (proto_t protocol) } goto common; #endif +#if defined(CONFIG_CMD_DNS) + case DNS: + if (NetOurDNSIP == 0) { + puts("*** ERROR: DNS server address not given\n"); + return 1; + } + goto common; +#endif #if defined(CONFIG_CMD_NFS) case NFS: #endif @@ -1681,6 +1700,16 @@ void copy_filename (char *dst, char *src, int size) #endif +#if defined(CONFIG_CMD_NFS) || defined(CONFIG_CMD_SNTP) || defined(CONFIG_CMD_DNS) +/* + * make port a little random, but use something trivial to compute + */ +unsigned int random_port(void) +{ + return 1024 + (get_timer(0) % 0x8000);; +} +#endif + void ip_to_string (IPaddr_t x, char *s) { x = ntohl (x); |