net: sctp: add build check for sctp_sf_eat_sack_6_2/jsctp_sf_eat_sack

[cascardo/linux.git] / net / sctp / probe.c

diff --git a/net/sctp/probe.c b/net/sctp/probe.c
index 4eaaaf6..261b7b9 100644 (file)
--- a/net/sctp/probe.c
+++ b/net/sctp/probe.c
@@ -183,6 +183,13 @@ static __init int sctpprobe_init(void)
 {
        int ret = -ENOMEM;
 
+       /* Warning: if the function signature of sctp_sf_eat_sack_6_2,
+        * has been changed, you also have to change the signature of
+        * jsctp_sf_eat_sack, otherwise you end up right here!
+        */
+       BUILD_BUG_ON(__same_type(sctp_sf_eat_sack_6_2,
+                                jsctp_sf_eat_sack) == 0);
+
        init_waitqueue_head(&sctpw.wait);
        spin_lock_init(&sctpw.lock);
        if (kfifo_alloc(&sctpw.fifo, bufsize, GFP_KERNEL))