diff options
| author | Neil Horman <nhorman@tuxdriver.com> | 2008-07-25 12:44:09 -0400 |
|---|---|---|
| committer | Vlad Yasevich <vladislav.yasevich@hp.com> | 2008-10-01 11:33:06 -0400 |
| commit | c226ef9b83694311327f3ab0036c6de9c22e9daf (patch) | |
| tree | 04c81b4186fd79a1f1b129a8627da6a41ceb4c25 /include/net/sctp | |
| parent | 845b8eda4d783a7ce2670d482a716840a650389e (diff) | |
| download | linux-3.10-c226ef9b83694311327f3ab0036c6de9c22e9daf.tar.gz linux-3.10-c226ef9b83694311327f3ab0036c6de9c22e9daf.tar.bz2 linux-3.10-c226ef9b83694311327f3ab0036c6de9c22e9daf.zip | |
sctp: reduce memory footprint of sctp_chunk structure
sctp_chunks should be put on a diet. This is some of the low hanging
fruit that we can strip out. Changes all the __s8/__u8 flags to
bitfields. Saves 12 bytes per chunk.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Diffstat (limited to 'include/net/sctp')
| -rw-r--r-- | include/net/sctp/structs.h | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index ab1c472ea75..0dc1b7267c3 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -731,20 +731,23 @@ struct sctp_chunk { */ struct sk_buff *auth_chunk; - __u8 rtt_in_progress; /* Is this chunk used for RTT calculation? */ - __u8 resent; /* Has this chunk ever been retransmitted. */ - __u8 has_tsn; /* Does this chunk have a TSN yet? */ - __u8 has_ssn; /* Does this chunk have a SSN yet? */ - __u8 singleton; /* Was this the only chunk in the packet? */ - __u8 end_of_packet; /* Was this the last chunk in the packet? */ - __u8 ecn_ce_done; /* Have we processed the ECN CE bit? */ - __u8 pdiscard; /* Discard the whole packet now? */ - __u8 tsn_gap_acked; /* Is this chunk acked by a GAP ACK? */ - __s8 fast_retransmit; /* Is this chunk fast retransmitted? */ - __u8 tsn_missing_report; /* Data chunk missing counter. */ - __u8 data_accepted; /* At least 1 chunk in this packet accepted */ - __u8 auth; /* IN: was auth'ed | OUT: needs auth */ - __u8 has_asconf; /* IN: have seen an asconf before */ +#define SCTP_CAN_FRTX 0x0 +#define SCTP_NEED_FRTX 0x1 +#define SCTP_DONT_FRTX 0x2 + __u16 rtt_in_progress:1, /* This chunk used for RTT calc? */ + resent:1, /* Has this chunk ever been resent. */ + has_tsn:1, /* Does this chunk have a TSN yet? */ + has_ssn:1, /* Does this chunk have a SSN yet? */ + singleton:1, /* Only chunk in the packet? */ + end_of_packet:1, /* Last chunk in the packet? */ + ecn_ce_done:1, /* Have we processed the ECN CE bit? */ + pdiscard:1, /* Discard the whole packet now? */ + tsn_gap_acked:1, /* Is this chunk acked by a GAP ACK? */ + data_accepted:1, /* At least 1 chunk accepted */ + auth:1, /* IN: was auth'ed | OUT: needs auth */ + has_asconf:1, /* IN: have seen an asconf before */ + tsn_missing_report:2, /* Data chunk missing counter. */ + fast_retransmit:2; /* Is this chunk fast retransmitted? */ }; void sctp_chunk_hold(struct sctp_chunk *); |