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sctp: shrink sctp_tsnmap some more by removing gabs array

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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>
This commit is contained in:
Vlad Yasevich 2008-10-08 14:19:01 -07:00 • committed by David S. Miller
parent 8e1ee18c33
commit 02015180e2
3 changed files with 15 additions and 20 deletions
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15
net/sctp/tsnmap.c
View file

@ -335,10 +335,11 @@ void sctp_tsnmap_renege(struct sctp_tsnmap *map, __u32 tsn)
}
/* How many gap ack blocks do we have recorded? */
__u16 sctp_tsnmap_num_gabs(struct sctp_tsnmap *map)
__u16 sctp_tsnmap_num_gabs(struct sctp_tsnmap *map,
struct sctp_gap_ack_block *gabs)
{
struct sctp_tsnmap_iter iter;
int gabs = 0;
int ngaps = 0;
/* Refresh the gap ack information. */
if (sctp_tsnmap_has_gap(map)) {
@ -348,14 +349,14 @@ __u16 sctp_tsnmap_num_gabs(struct sctp_tsnmap *map)
&start,
&end)) {
map->gabs[gabs].start = htons(start);
map->gabs[gabs].end = htons(end);
gabs++;
if (gabs >= SCTP_MAX_GABS)
gabs[ngaps].start = htons(start);
gabs[ngaps].end = htons(end);
ngaps++;
if (ngaps >= SCTP_MAX_GABS)
break;
}
}
return gabs;
return ngaps;
}
static int sctp_tsnmap_grow(struct sctp_tsnmap *map, u16 gap)