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| author | Joe Hershberger <joe.hershberger@ni.com> | 2012-09-18 10:01:32 +0000 |
|---|---|---|
| committer | Joe Hershberger <joe.hershberger@ni.com> | 2012-09-24 13:55:44 -0500 |
| commit | 8a0eccb1056b313b45ab62e3aac400f339aa71b4 (patch) | |
| tree | f1392d5d87080b8c8059504544e9ae2ad3521aa6 | |
| parent | e827fec2b24d4412eabed3cf0080a08a0a7d148c (diff) | |
| download | u-boot-8a0eccb1056b313b45ab62e3aac400f339aa71b4.tar.gz | |
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 <joe.hershberger@ni.com>
| -rw-r--r-- | drivers/net/netconsole.c | 8 | ||||
| -rw-r--r-- | include/net.h | 3 | ||||
| -rw-r--r-- | net/net.c | 1 |
3 files changed, 9 insertions, 3 deletions
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)) diff --git a/include/net.h b/include/net.h index e193b7b60b..35393366d3 100644 --- a/include/net.h +++ b/include/net.h @@ -549,7 +549,8 @@ extern void NetReceive(uchar *, int); #ifdef CONFIG_NETCONSOLE 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); #endif static inline __attribute__((always_inline)) int eth_is_on_demand_init(void) @@ -1161,6 +1161,7 @@ NetReceive(uchar *inpkt, int len) #ifdef CONFIG_NETCONSOLE nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE, + ntohl(ip->ip_src), ntohs(ip->udp_dst), ntohs(ip->udp_src), ntohs(ip->udp_len) - UDP_HDR_SIZE); |