diff options
| author | Stefano Brivio <stefano.brivio@polimi.it> | 2007-12-23 04:41:19 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 15:00:52 -0800 |
| commit | fa44327c06492c9bd625dbc8dbe35e5d5965fec6 (patch) | |
| tree | f13a2e0faf5b15457d125461495561da017c84c2 /net/mac80211/rc80211_pid_algo.c | |
| parent | ca5fbca924b845863ab9da00ac90b3384445f497 (diff) | |
| download | blackbird-op-linux-fa44327c06492c9bd625dbc8dbe35e5d5965fec6.tar.gz blackbird-op-linux-fa44327c06492c9bd625dbc8dbe35e5d5965fec6.zip | |
rc80211-pid: simplify and fix shift_adjust
Simplify and fix rate_control_pid_shift_adjust(). A bug prevented correct
mapping of sorted rates, and readability was seriously flawed.
Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac80211/rc80211_pid_algo.c')
| -rw-r--r-- | net/mac80211/rc80211_pid_algo.c | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c index b84e51480c84..3e26280d3142 100644 --- a/net/mac80211/rc80211_pid_algo.c +++ b/net/mac80211/rc80211_pid_algo.c @@ -74,29 +74,27 @@ static int rate_control_pid_shift_adjust(struct rc_pid_rateinfo *r, { int i, j, k, tmp; - if (cur + adj < 0) - return 0; - if (cur + adj >= l) - return l - 1; + j = r[cur].rev_index; + i = j + adj; - i = r[cur + adj].rev_index; + if (i < 0) + return r[0].index; + if (i >= l - 1) + return r[l - 1].index; - j = r[cur].rev_index; + tmp = i; if (adj < 0) { - tmp = i; - for (k = j; k >= i; k--) - if (r[k].diff <= r[j].diff) - tmp = k; - return r[tmp].index; - } else if (adj > 0) { - tmp = i; - for (k = i + 1; k + i < l; k++) - if (r[k].diff <= r[i].diff) - tmp = k; - return r[tmp].index; + for (k = j; k >= i; k--) + if (r[k].diff <= r[j].diff) + tmp = k; + } else { + for (k = i + 1; k + i < l; k++) + if (r[k].diff <= r[i].diff) + tmp = k; } - return cur + adj; + + return r[tmp].index; } static void rate_control_pid_adjust_rate(struct ieee80211_local *local, |
