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ax25: add link layer header validation function
[pandora-kernel.git]
/
net
/
ax25
/
ax25_ip.c
diff --git
a/net/ax25/ax25_ip.c
b/net/ax25/ax25_ip.c
index
cf0c47a
..
a0c9956
100644
(file)
--- a/
net/ax25/ax25_ip.c
+++ b/
net/ax25/ax25_ip.c
@@
-232,9
+232,24
@@
int ax25_rebuild_header(struct sk_buff *skb)
#endif
#endif
+static bool ax25_validate_header(const char *header, unsigned int len)
+{
+ ax25_digi digi;
+
+ if (!len)
+ return false;
+
+ if (header[0])
+ return true;
+
+ return ax25_addr_parse(header + 1, len - 1, NULL, NULL, &digi, NULL,
+ NULL);
+}
+
const struct header_ops ax25_header_ops = {
.create = ax25_hard_header,
.rebuild = ax25_rebuild_header,
const struct header_ops ax25_header_ops = {
.create = ax25_hard_header,
.rebuild = ax25_rebuild_header,
+ .validate = ax25_validate_header,
};
EXPORT_SYMBOL(ax25_hard_header);
};
EXPORT_SYMBOL(ax25_hard_header);