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sctp: add SCTP_PR_SUPPORTED on sctp sockopt

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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>
This commit is contained in:
Xin Long
2016-07-09 19:47:40 +08:00
committed by David S. Miller
parent bac65c4b39
commit 28aa4c26fc
6 changed files with 93 additions and 8 deletions
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include/uapi/linux/sctp.h
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@@ -112,6 +112,7 @@ typedef __s32 sctp_assoc_t;
#define SCTP_SOCKOPT_CONNECTX 110 /* CONNECTX requests. */
#define SCTP_SOCKOPT_CONNECTX3 111 /* CONNECTX requests (updated) */
#define SCTP_GET_ASSOC_STATS 112 /* Read only */
#define SCTP_PR_SUPPORTED 113
/* These are bit fields for msghdr->msg_flags. See section 5.1. */
/* On user space Linux, these live in <bits/socket.h> as an enum. */