Return-path: Received: from ti-out-0910.google.com ([209.85.142.185]:56499 "EHLO ti-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751301AbYLFRyT (ORCPT ); Sat, 6 Dec 2008 12:54:19 -0500 Received: by ti-out-0910.google.com with SMTP id b6so348077tic.23 for ; Sat, 06 Dec 2008 09:54:17 -0800 (PST) From: Sujith MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Message-ID: <18746.48068.593834.660064@localhost.localdomain> (sfid-20081206_185432_464908_BAEB1D03) Date: Sat, 6 Dec 2008 23:22:04 +0530 To: Mats Johannesson Cc: linux-wireless@vger.kernel.org Subject: Re: [ath9k] 2.6.28-rc7-wl Kernel panic when "iwlist ath0 scan" as root In-Reply-To: <20081206180537.717d1791@loke.fish.not> References: <20081206113406.734f1d94@loke.fish.not> <18746.37273.989918.333164@localhost.localdomain> <20081206180537.717d1791@loke.fish.not> Sender: linux-wireless-owner@vger.kernel.org List-ID: Mats Johannesson wrote: > It fixes the kernel panic with root "iwlist ath0 scan" but after that > the network dies without a sign of any kind (iwlist, ifconfig etc is > normal, nothing in logs). Tried several times. Boot -> ping local and > remote machine OK -> "iwlist ath0 scan" -> ping nonfunctional: 'no > route to host' or some such message. > Ok, thanks for testing. Can you check if this patch makes the connection stable ? Please apply on top of the earlier patch. diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c index d874223..9e5c0c0 100644 --- a/drivers/net/wireless/ath9k/beacon.c +++ b/drivers/net/wireless/ath9k/beacon.c @@ -106,7 +106,7 @@ static void ath_beacon_setup(struct ath_softc *sc, * XXX everything at min xmit rate */ rix = 0; - rt = sc->hw_rate_table[sc->sc_curmode]; + rt = sc->cur_rate_table; rate = rt->info[rix].ratecode; if (sc->sc_flags & SC_OP_PREAMBLE_SHORT) rate |= rt->info[rix].short_preamble; diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h index 726d0a3..23844e0 100644 --- a/drivers/net/wireless/ath9k/core.h +++ b/drivers/net/wireless/ath9k/core.h @@ -646,7 +646,6 @@ struct ath_softc { u8 sc_tx_chainmask; u8 sc_rx_chainmask; enum ath9k_int sc_imask; - enum wireless_mode sc_curmode; enum PROT_MODE sc_protmode; u8 sc_nbcnvaps; diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 08f2949..5c6a1b0 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -60,7 +60,8 @@ static void bus_read_cachesize(struct ath_softc *sc, int *csz) static void ath_setcurmode(struct ath_softc *sc, enum wireless_mode mode) { - sc->sc_curmode = mode; + if (!sc->sc_curaid) + sc->cur_rate_table = sc->hw_rate_table[mode]; /* * All protection frames are transmited at 2Mb/s for * 11g, otherwise at 1Mb/s. diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c index 8eec667..0ae5988 100644 --- a/drivers/net/wireless/ath9k/rc.c +++ b/drivers/net/wireless/ath9k/rc.c @@ -874,9 +874,8 @@ static void ath_rc_ratefind(struct ath_softc *sc, * So, set fourth rate in series to be same as third one for * above conditions. */ - if ((sc->sc_curmode == ATH9K_MODE_11NG_HT20) || - (sc->sc_curmode == ATH9K_MODE_11NG_HT40PLUS) || - (sc->sc_curmode == ATH9K_MODE_11NG_HT40MINUS)) { + if ((sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ) && + (sc->hw->conf.ht.enabled)) { u8 dot11rate = rate_table->info[rix].dot11rate; u8 phy = rate_table->info[rix].phy; if (i == 4 && @@ -1354,8 +1353,8 @@ static void ath_rc_init(struct ath_softc *sc, sta->ht_cap.ht_supported, is_cw_40); } else if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP) { - /* sc_curmode would be set on init through config() */ - rate_table = sc->hw_rate_table[sc->sc_curmode]; + /* cur_rate_table would be set on init through config() */ + rate_table = sc->cur_rate_table; } if (!rate_table) { diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c index ec7edac..8aa8614 100644 --- a/drivers/net/wireless/ath9k/recv.c +++ b/drivers/net/wireless/ath9k/recv.c @@ -147,7 +147,7 @@ static int ath_rx_prepare(struct sk_buff *skb, struct ath_desc *ds, struct ieee80211_rx_status *rx_status, bool *decrypt_error, struct ath_softc *sc) { - struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode]; + struct ath_rate_table *rate_table = sc->cur_rate_table; struct ieee80211_hdr *hdr; int ratekbps, rix; u8 ratecode; diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index 9de27c6..353b7ed 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -493,7 +493,7 @@ static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid, static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf, int width, int half_gi, bool shortPreamble) { - struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode]; + struct ath_rate_table *rate_table = sc->cur_rate_table; u32 nbits, nsymbits, duration, nsymbols; u8 rc; int streams, pktlen; @@ -557,7 +557,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) } /* get the cix for the lowest valid rix */ - rt = sc->hw_rate_table[sc->sc_curmode]; + rt = sc->cur_rate_table; for (i = 3; i >= 0; i--) { if (rates[i].count && (rates[i].idx >= 0)) { rix = rates[i].idx; @@ -1240,7 +1240,7 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf, struct ath_atx_tid *tid) { - struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode]; + struct ath_rate_table *rate_table = sc->cur_rate_table; struct sk_buff *skb; struct ieee80211_tx_info *tx_info; struct ieee80211_tx_rate *rates; @@ -1308,7 +1308,7 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_buf *bf, u16 frmlen) { - struct ath_rate_table *rt = sc->hw_rate_table[sc->sc_curmode]; + struct ath_rate_table *rt = sc->cur_rate_table; struct sk_buff *skb = bf->bf_mpdu; struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); u32 nsymbits, nsymbols, mpdudensity;