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sctp: compress bit-wide flags to a bitfield on sctp_sock 

It wastes space and gets worse as we add new flags, so convert bit-wide
flags to a bitfield.

Currently it already saves 4 bytes in sctp_sock, which are left as holes
in it for now. The whole struct needs packing, which should be done in
another patch.

Note that do_auto_asconf cannot be merged, as explained in the comment
before it.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Marcelo Ricardo Leitner 2016-04-08 16:41:27 -03:00 committed by David S. Miller
parent ea019649c3
commit 250eb1f881
1 changed files with 6 additions and 6 deletions
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12
include/net/sctp/structs.h
View File

@ -210,14 +210,14 @@ struct sctp_sock {
int user_frag; int user_frag;
__u32 autoclose; __u32 autoclose;
__u8 nodelay;
__u8 disable_fragments;
__u8 v4mapped;
__u8 frag_interleave;
__u32 adaptation_ind; __u32 adaptation_ind;
__u32 pd_point; __u32 pd_point;
__u8 recvrcvinfo; __u16 nodelay:1,
__u8 recvnxtinfo; disable_fragments:1,
v4mapped:1,
frag_interleave:1,
recvrcvinfo:1,
recvnxtinfo:1;
atomic_t pd_mode; atomic_t pd_mode;
/* Receive to here while partial delivery is in effect. */ /* Receive to here while partial delivery is in effect. */