There have been cases reported where a history buffer size of 8 was
not enough to resolve conflict overlaps. Increase the buffer to and
get rid of the size element which is currently just storing the
constant WB_HISTORY_SIZE.
Signed-off-by: John Johansen <john.johansen@canonical.com>
void aa_dfa_free_kref(struct kref *kref);
-#define WB_HISTORY_SIZE 8
+#define WB_HISTORY_SIZE 24
struct match_workbuf {
unsigned int count;
unsigned int pos;
.count = 0, \
.pos = 0, \
.len = 0, \
- .size = WB_HISTORY_SIZE, \
}
unsigned int aa_dfa_leftmatch(struct aa_dfa *dfa, unsigned int start,
#define inc_wb_pos(wb) \
do { \
- wb->pos = (wb->pos + 1) & (wb->size - 1); \
- wb->len = (wb->len + 1) & (wb->size - 1); \
+ wb->pos = (wb->pos + 1) & (WB_HISTORY_SIZE - 1); \
+ wb->len = (wb->len + 1) & (WB_HISTORY_SIZE - 1); \
} while (0)
/* For DFAs that don't support extended tagging of states */
return true;
}
if (pos == 0)
- pos = wb->size;
+ pos = WB_HISTORY_SIZE;
pos--;
}