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authorVlad Yasevich <vladislav.yasevich@hp.com>2008-10-08 14:19:01 -0700
committerDavid S. Miller <davem@davemloft.net>2008-10-08 14:19:01 -0700
commit02015180e2509afd2e3fe3790a333b30708a116b (patch)
treed2d92b62758f01375602cd7e44cb9ffbb3e44d59 /net/sctp/sm_make_chunk.c
parent8e1ee18c332e08bee9d8bd66e63cd564fbf17fc2 (diff)
downloadop-kernel-dev-02015180e2509afd2e3fe3790a333b30708a116b.zip
op-kernel-dev-02015180e2509afd2e3fe3790a333b30708a116b.tar.gz
sctp: shrink sctp_tsnmap some more by removing gabs array
The gabs array in the sctp_tsnmap structure is only used in one place, sctp_make_sack(). As such, carrying the array around in the sctp_tsnmap and thus directly in the sctp_association is rather pointless since most of the time it's just taking up space. Now, let sctp_make_sack create and populate it and then throw it away when it's done. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_make_chunk.c')
-rw-r--r--net/sctp/sm_make_chunk.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 6dd9b3e..fd8acb4 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -702,12 +702,14 @@ struct sctp_chunk *sctp_make_sack(const struct sctp_association *asoc)
__u32 ctsn;
__u16 num_gabs, num_dup_tsns;
struct sctp_tsnmap *map = (struct sctp_tsnmap *)&asoc->peer.tsn_map;
+ struct sctp_gap_ack_block gabs[SCTP_MAX_GABS];
+ memset(gabs, 0, sizeof(gabs));
ctsn = sctp_tsnmap_get_ctsn(map);
SCTP_DEBUG_PRINTK("sackCTSNAck sent: 0x%x.\n", ctsn);
/* How much room is needed in the chunk? */
- num_gabs = sctp_tsnmap_num_gabs(map);
+ num_gabs = sctp_tsnmap_num_gabs(map, gabs);
num_dup_tsns = sctp_tsnmap_num_dups(map);
/* Initialize the SACK header. */
@@ -763,7 +765,7 @@ struct sctp_chunk *sctp_make_sack(const struct sctp_association *asoc)
/* Add the gap ack block information. */
if (num_gabs)
sctp_addto_chunk(retval, sizeof(__u32) * num_gabs,
- sctp_tsnmap_get_gabs(map));
+ gabs);
/* Add the duplicate TSN information. */
if (num_dup_tsns)
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