diff options
| author | Ed Swarthout <Ed.Swarthout@freescale.com> | 2007-03-07 12:14:50 -0600 |
|---|---|---|
| committer | Ben Warren <bwarren@qstreams.com> | 2007-03-07 18:12:15 -0500 |
| commit | 83853178bd36bca6f0f8f1331476620c84a587fc (patch) | |
| tree | e5408afbc6f933e6da2c16a1ab119b7864fc026c /net/net.c | |
| parent | ccbc7036648e465697ca298ba51e0e76dda352a0 (diff) | |
| download | u-boot-imx-83853178bd36bca6f0f8f1331476620c84a587fc.zip u-boot-imx-83853178bd36bca6f0f8f1331476620c84a587fc.tar.gz u-boot-imx-83853178bd36bca6f0f8f1331476620c84a587fc.tar.bz2 | |
net - Support ping reply when processing net-loop
Add ICMP_ECHO_REQUEST packet support by responding with a ICMP_ECHO_REPLY.
This permits the ping command to test the phy interface when the phy
is put in loopback mode (typically by setting register 0 bit 14).
It also allows the port to respond to an external ping when u-boot is
processing some other net command (such as tftp). This is useful when
tftp appears to hang.
Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Ben Warren <bwarren@qstreams.com>
Diffstat (limited to 'net/net.c')
| -rw-r--r-- | net/net.c | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -1424,6 +1424,26 @@ NetReceive(volatile uchar * inpkt, int len) /* XXX point to ip packet */ (*packetHandler)((uchar *)ip, 0, 0, 0); return; + case ICMP_ECHO_REQUEST: +#ifdef ET_DEBUG + printf ("Got ICMP ECHO REQUEST, return %d bytes \n", + ETHER_HDR_SIZE + len); +#endif + memcpy (&et->et_dest[0], &et->et_src[0], 6); + memcpy (&et->et_src[ 0], NetOurEther, 6); + + ip->ip_sum = 0; + ip->ip_off = 0; + NetCopyIP((void*)&ip->ip_dst, &ip->ip_src); + NetCopyIP((void*)&ip->ip_src, &NetOurIP); + ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP >> 1); + + icmph->type = ICMP_ECHO_REPLY; + icmph->checksum = 0; + icmph->checksum = ~NetCksum((uchar *)icmph, + (len - IP_HDR_SIZE_NO_UDP) >> 1); + (void) eth_send((uchar *)et, ETHER_HDR_SIZE + len); + return; #endif default: return; |