From 981215a5d399f0c53f50e0ff06b9fc40658df99d Mon Sep 17 00:00:00 2001
From: benjsc <benjsc@FreeBSD.org>
Date: Tue, 27 Nov 2007 08:58:32 +0000
Subject: Handle missed beacons correctly

Approved by: mlaier (comentor)
---
 sys/dev/wpi/if_wpi.c    | 13 ++++++++++++-
 sys/dev/wpi/if_wpireg.h | 10 ++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

(limited to 'sys/dev/wpi')

diff --git a/sys/dev/wpi/if_wpi.c b/sys/dev/wpi/if_wpi.c
index d2ae17f..981fdce 100644
--- a/sys/dev/wpi/if_wpi.c
+++ b/sys/dev/wpi/if_wpi.c
@@ -1800,7 +1800,6 @@ wpi_notif_intr(struct wpi_softc *sc)
 		if (!(desc->qid & 0x80))	/* reply to a command */
 			wpi_cmd_intr(sc, desc);
 
-		/* XXX beacon miss handling? */
 		switch (desc->type) {
 		case WPI_RX_DONE:
 			/* a 802.11 frame was received */
@@ -1870,6 +1869,18 @@ wpi_notif_intr(struct wpi_softc *sc)
 			wpi_queue_cmd(sc, WPI_SCAN_NEXT);
 			break;
 		}
+		case WPI_MISSED_BEACON:
+		{
+		    struct wpi_missed_beacon *beacon =
+				(struct wpi_missed_beacon *)(desc + 1);
+
+                    if (le32toh(beacon->consecutive) >= ic->ic_bmissthreshold) {
+			DPRINTF(("Beacon miss: %u >= %u\n",
+				 le32toh(beacon->consecutive),
+				 ic->ic_bmissthreshold));
+			ieee80211_beacon_miss(ic);
+		    }
+		}
 		}
 
 		sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT;
diff --git a/sys/dev/wpi/if_wpireg.h b/sys/dev/wpi/if_wpireg.h
index a821bf0..0f83d0a 100644
--- a/sys/dev/wpi/if_wpireg.h
+++ b/sys/dev/wpi/if_wpireg.h
@@ -203,6 +203,7 @@ struct wpi_rx_desc {
 #define WPI_START_SCAN		130
 #define WPI_STOP_SCAN		132
 #define WPI_STATE_CHANGED	161
+#define WPI_MISSED_BEACON	162
 
 	uint8_t		flags;
 	uint8_t		idx;
@@ -420,6 +421,15 @@ struct wpi_cmd_beacon {
 	struct		ieee80211_frame wh;
 } __packed;
 
+/* structure for notification WPI_MISSED_BEACON */
+struct wpi_missed_beacon {
+    uint32_t consecutive;
+    uint32_t total;
+    uint32_t expected;
+    uint32_t received;
+} __packed;
+
+
 /* structure for WPI_CMD_MRR_SETUP */
 struct wpi_mrr_setup {
 	uint8_t	which;
-- 
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