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sctp: define subscribe in sctp_sock as __u16

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The member subscribe in sctp_sock is used to indicate to which of
the events it is subscribed, more like a group of flags. So it's
better to be defined as __u16 (2 bytpes), instead of struct
sctp_event_subscribe (13 bytes).

Note that sctp_event_subscribe is an UAPI struct, used on sockopt
calls, and thus it will not be removed. This patch only changes
the internal storage of the flags.

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
2018-11-18 16:08:51 +08:00
committed by David S. Miller
parent f2be6d710d
commit 2cc0eeb676
7 changed files with 69 additions and 38 deletions
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6
include/uapi/linux/sctp.h
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@@ -632,7 +632,9 @@ union sctp_notification {
*/
enum sctp_sn_type {
SCTP_SN_TYPE_BASE = (1<<15),
SCTP_SN_TYPE_BASE = (1<<15),
SCTP_DATA_IO_EVENT = SCTP_SN_TYPE_BASE,
#define SCTP_DATA_IO_EVENT SCTP_DATA_IO_EVENT
SCTP_ASSOC_CHANGE,
#define SCTP_ASSOC_CHANGE SCTP_ASSOC_CHANGE
SCTP_PEER_ADDR_CHANGE,
@@ -657,6 +659,8 @@ enum sctp_sn_type {
#define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT
SCTP_STREAM_CHANGE_EVENT,
#define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT
SCTP_SN_TYPE_MAX = SCTP_STREAM_CHANGE_EVENT,
#define SCTP_SN_TYPE_MAX SCTP_SN_TYPE_MAX
};
/* Notification error codes used to fill up the error fields in some