From 8a0eccb1056b313b45ab62e3aac400f339aa71b4 Mon Sep 17 00:00:00 2001 From: Joe Hershberger Date: Tue, 18 Sep 2012 10:01:32 +0000 Subject: net: Filter incoming netconsole packets by IP 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 --- drivers/net/netconsole.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 63ce73c818..dd7032af56 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -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)) -- cgit v1.2.1