sctp: add SCTP_PR_SUPPORTED on sctp sockopt
According to section 4.5 of rfc7496, prsctp_enable should be per asoc.
We will add prsctp_enable to both asoc and ep, and replace the places
where it used net.sctp->prsctp_enable with asoc->prsctp_enable.
ep->prsctp_enable will be initialized with net.sctp->prsctp_enable, and
asoc->prsctp_enable will be initialized with ep->prsctp_enable. We can
also modify it's value through sockopt SCTP_PR_SUPPORTED.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 83c5ec5..07115ca 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -1256,7 +1256,8 @@
/* SCTP-AUTH: endpoint shared keys */
struct list_head endpoint_shared_keys;
__u16 active_key_id;
- __u8 auth_enable;
+ __u8 auth_enable:1,
+ prsctp_enable:1;
};
/* Recover the outter endpoint structure. */
@@ -1848,7 +1849,8 @@
__u16 active_key_id;
__u8 need_ecne:1, /* Need to send an ECNE Chunk? */
- temp:1; /* Is it a temporary association? */
+ temp:1, /* Is it a temporary association? */
+ prsctp_enable:1;
struct sctp_priv_assoc_stats stats;
};