From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dmitry Kravkov" Subject: [PATCH net 2/6] bnx2x: prevent statistics update flow to act before statistics are started Date: Tue, 16 Jul 2013 18:21:43 +0300 Message-ID: <1373988107-305-3-git-send-email-dmitry@broadcom.com> References: <1373988107-305-1-git-send-email-dmitry@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit To: davem@davemloft.net, netdev@vger.kernel.org Return-path: Received: from mms1.broadcom.com ([216.31.210.17]:4140 "EHLO mms1.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933137Ab3GPPWD (ORCPT ); Tue, 16 Jul 2013 11:22:03 -0400 In-Reply-To: <1373988107-305-1-git-send-email-dmitry@broadcom.com> Sender: netdev-owner@vger.kernel.org List-ID: This in order to serialize statistics requests sent to FW, otherwise two outstanding queries may cause FW assert. Signed-off-by: Dmitry Kravkov Signed-off-by: Ariel Elior Signed-off-by: Eilon Greenstein --- drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 1 + drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 1 + drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c | 6 +++++- 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h index dedbd76..bdbd87e 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h @@ -1830,6 +1830,7 @@ struct bnx2x { int fp_array_size; u32 dump_preset_idx; + atomic_t stats_started; }; /* Tx queues may be less or equal to Rx queues */ diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index e5da078..7e9681f 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -11524,6 +11524,7 @@ static int bnx2x_init_bp(struct bnx2x *bp) mutex_init(&bp->port.phy_mutex); mutex_init(&bp->fw_mb_mutex); spin_lock_init(&bp->stats_lock); + atomic_set(&bp->stats_started, 0); INIT_DELAYED_WORK(&bp->sp_task, bnx2x_sp_task); INIT_DELAYED_WORK(&bp->sp_rtnl_task, bnx2x_sp_rtnl_task); diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c index 69c4cb6..79d2d5f 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c @@ -534,6 +534,8 @@ static void bnx2x_stats_start(struct bnx2x *bp) bnx2x_hw_stats_post(bp); bnx2x_storm_stats_post(bp); + + atomic_set(&bp->stats_started, 1); } static void bnx2x_stats_pmf_start(struct bnx2x *bp) @@ -1227,7 +1229,7 @@ static void bnx2x_stats_update(struct bnx2x *bp) { u32 *stats_comp = bnx2x_sp(bp, stats_comp); - if (bnx2x_edebug_stats_stopped(bp)) + if (bnx2x_edebug_stats_stopped(bp) || !atomic_read(&bp->stats_started)) return; if (IS_PF(bp)) { @@ -1332,6 +1334,8 @@ static void bnx2x_stats_stop(struct bnx2x *bp) { int update = 0; + atomic_set(&bp->stats_started, 0); + bnx2x_stats_comp(bp); if (bp->port.pmf) -- 1.8.1.4