tcp repair: Fix unaligned access when repairing options (v2)
Don't pick __u8/__u16 values directly from raw pointers, but instead use
an array of structures of code:value pairs. This is OK, since the buffer
we take options from is not an skb memory, but a user-to-kernel one.
For those options which don't require any value now, require this to be
zero (for potential future extension of this API).
v2: Changed tcp_repair_opt to use two __u32-s as spotted by David Laight.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 9865936..278af9e 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -111,6 +111,11 @@
#define TCP_QUEUE_SEQ 21
#define TCP_REPAIR_OPTIONS 22
+struct tcp_repair_opt {
+ __u32 opt_code;
+ __u32 opt_val;
+};
+
enum {
TCP_NO_QUEUE,
TCP_RECV_QUEUE,