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net: Filter incoming netconsole packets by IP

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Check the incoming packets' source IP address... if ncip isn't set to a
broadcast address, only listen to the client at ncip.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Joe Hershberger
2012-09-18 10:01:32 +00:00
parent e827fec2b2
commit 8a0eccb105
3 changed files with 9 additions and 3 deletions
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8
drivers/net/netconsole.c
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@@ -147,13 +147,17 @@ void NcStart(void)
}
}
int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len)
int nc_input_packet(uchar *pkt, IPaddr_t src_ip, unsigned dest_port,
unsigned src_port, unsigned len)
{
int end, chunk;
if (dest != nc_in_port || !len)
if (dest_port != nc_in_port || !len)
return 0; /* not for us */
if (src_ip != nc_ip && !is_broadcast(nc_ip))
return 0; /* not from our client */
debug_cond(DEBUG_DEV_PKT, "input: \"%*.*s\"\n", len, len, pkt);
if (input_size == sizeof(input_buffer))