Commit 2691f271 authored May 27, 2014 by Vladimir Kondratiev Committed by Ian Maund Jun 25, 2014

wil6210: optimize wil_release_reorder_frames



In case of receiving frame with sequence number far greater than current,
wil_release_reorder_frames() will iterate many times over empty buffer.

Optimize this case by checking buffer emptiness and simply update
head_seq_num without iterating.

Suggested-by: Vladimir Shulman <Vladimir.Shulman@Wilocity.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Git-commit: cf42c4e5d3019d801ec6d033b63de5446a53af5c
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Liron Kuch <lkuch@codeaurora.org>

parent e9c8a8bf

drivers/net/wireless/ath/wil6210/rx_reorder.c

+8 −1

Original line number	Diff line number	Diff line
		@@ -49,10 +49,17 @@ static void wil_release_reorder_frames(struct wil6210_priv *wil,
		{
		int index;

		while (seq_less(r->head_seq_num, hseq)) {
		/* note: this function is never called with
		* hseq preceding r->head_seq_num, i.e it is always true
		* !seq_less(hseq, r->head_seq_num)
		* and thus on loop exit it should be
		* r->head_seq_num == hseq
		*/
		while (seq_less(r->head_seq_num, hseq) && r->stored_mpdu_num) {
		index = reorder_index(r, r->head_seq_num);
		wil_release_reorder_frame(wil, r, index);
		}
		r->head_seq_num = hseq;
		}

		static void wil_reorder_release(struct wil6210_priv *wil,