Date: Sun, 3 May 2015 23:28:54 +0000 (UTC) From: Adrian Chadd <adrian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r282392 - head/sys/dev/wpi Message-ID: <201505032328.t43NSsiF090226@svn.freebsd.org>
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Author: adrian Date: Sun May 3 23:28:54 2015 New Revision: 282392 URL: https://svnweb.freebsd.org/changeset/base/282392 Log: Try to fix passive scanning hang on beacon miss. PR: kern/197143 Submitted by: Andriy Voskoboinyk <s3erios@gmail.com> Modified: head/sys/dev/wpi/if_wpi.c head/sys/dev/wpi/if_wpi_debug.h head/sys/dev/wpi/if_wpireg.h Modified: head/sys/dev/wpi/if_wpi.c ============================================================================== --- head/sys/dev/wpi/if_wpi.c Sun May 3 23:27:36 2015 (r282391) +++ head/sys/dev/wpi/if_wpi.c Sun May 3 23:28:54 2015 (r282392) @@ -2135,11 +2135,18 @@ wpi_notif_intr(struct wpi_softc *sc) __func__, misses, le32toh(miss->total), received, expected); - if (vap->iv_state == IEEE80211_S_RUN && - (ic->ic_flags & IEEE80211_F_SCAN) == 0 && - (misses >= threshold || - (received == 0 && expected >= threshold))) - ieee80211_beacon_miss(ic); + if (misses >= threshold || + (received == 0 && expected >= threshold)) { + WPI_RXON_LOCK(sc); + if (callout_pending(&sc->scan_timeout)) { + wpi_cmd(sc, WPI_CMD_SCAN_ABORT, NULL, + 0, 1); + } + WPI_RXON_UNLOCK(sc); + if (vap->iv_state == IEEE80211_S_RUN && + (ic->ic_flags & IEEE80211_F_SCAN) == 0) + ieee80211_beacon_miss(ic); + } break; } @@ -2202,17 +2209,21 @@ wpi_notif_intr(struct wpi_softc *sc) { bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD); -#ifdef WPI_DEBUG + struct wpi_stop_scan *scan = (struct wpi_stop_scan *)(desc + 1); + DPRINTF(sc, WPI_DEBUG_SCAN, "scan finished nchan=%d status=%d chan=%d\n", scan->nchan, scan->status, scan->chan); -#endif + WPI_RXON_LOCK(sc); callout_stop(&sc->scan_timeout); WPI_RXON_UNLOCK(sc); - ieee80211_scan_next(vap); + if (scan->status == WPI_SCAN_ABORTED) + ieee80211_cancel_scan(vap); + else + ieee80211_scan_next(vap); break; } } Modified: head/sys/dev/wpi/if_wpi_debug.h ============================================================================== --- head/sys/dev/wpi/if_wpi_debug.h Sun May 3 23:27:36 2015 (r282391) +++ head/sys/dev/wpi/if_wpi_debug.h Sun May 3 23:28:54 2015 (r282392) @@ -86,6 +86,7 @@ static const char *wpi_cmd_str(int cmd) WPI_DESC(WPI_CMD_SET_LED); WPI_DESC(WPI_CMD_SET_POWER_MODE); WPI_DESC(WPI_CMD_SCAN); + WPI_DESC(WPI_CMD_SCAN_ABORT); WPI_DESC(WPI_CMD_SET_BEACON); WPI_DESC(WPI_CMD_TXPOWER); WPI_DESC(WPI_CMD_BT_COEX); Modified: head/sys/dev/wpi/if_wpireg.h ============================================================================== --- head/sys/dev/wpi/if_wpireg.h Sun May 3 23:27:36 2015 (r282391) +++ head/sys/dev/wpi/if_wpireg.h Sun May 3 23:28:54 2015 (r282392) @@ -352,6 +352,7 @@ struct wpi_tx_cmd { #define WPI_CMD_SET_LED 72 #define WPI_CMD_SET_POWER_MODE 119 #define WPI_CMD_SCAN 128 +#define WPI_CMD_SCAN_ABORT 129 #define WPI_CMD_SET_BEACON 145 #define WPI_CMD_TXPOWER 151 #define WPI_CMD_BT_COEX 155 @@ -725,6 +726,9 @@ struct wpi_start_scan { struct wpi_stop_scan { uint8_t nchan; uint8_t status; +#define WPI_SCAN_COMPLETED 1 +#define WPI_SCAN_ABORTED 2 + uint8_t reserved; uint8_t chan; uint64_t tsf;
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