From 4324414f8ccae4997dd1e91646683679a4436959 Mon Sep 17 00:00:00 2001 From: Sony Chacko Date: Mon, 22 Sep 2014 05:51:50 -0400 Subject: [PATCH 1/4] qlcnic: Use qlcnic_83xx_flash_read32() API instead of lockless version of the API. In qlcnic_83xx_setup_idc_parameters() routine use qlcnic_83xx_flash_read32() API which takes flash lock internally instead of the lockless version qlcnic_83xx_lockless_flash_read32(). Signed-off-by: Sony Chacko Signed-off-by: Manish Chopra Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c index 86783e1afcf7..3172cdf591fe 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c @@ -1177,9 +1177,8 @@ static void qlcnic_83xx_setup_idc_parameters(struct qlcnic_adapter *adapter) { u32 idc_params, val; - if (qlcnic_83xx_lockless_flash_read32(adapter, - QLC_83XX_IDC_FLASH_PARAM_ADDR, - (u8 *)&idc_params, 1)) { + if (qlcnic_83xx_flash_read32(adapter, QLC_83XX_IDC_FLASH_PARAM_ADDR, + (u8 *)&idc_params, 1)) { dev_info(&adapter->pdev->dev, "%s:failed to get IDC params from flash\n", __func__); adapter->dev_init_timeo = QLC_83XX_IDC_INIT_TIMEOUT_SECS; From c023030198b2b0fb87f5d9bcb388c41bfaf3c3c0 Mon Sep 17 00:00:00 2001 From: Manish Chopra Date: Mon, 22 Sep 2014 05:51:51 -0400 Subject: [PATCH 2/4] qlcnic: Fix memory corruption while reading stats using ethtool. o Driver is doing memset with zero for total number of stats bytes when it has already filled some data in the stats buffer, which can overwrite memory area beyond the length of stats buffer. o Fix this by initializing stats buffer with zero before filling any data in it. Signed-off-by: Manish Chopra Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c index 141f116eb868..2d77b7694d16 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c @@ -1333,12 +1333,11 @@ static void qlcnic_get_ethtool_stats(struct net_device *dev, struct qlcnic_host_tx_ring *tx_ring; struct qlcnic_esw_statistics port_stats; struct qlcnic_mac_statistics mac_stats; - int index, ret, length, size, tx_size, ring; + int index, ret, length, size, ring; char *p; - tx_size = adapter->drv_tx_rings * QLCNIC_TX_STATS_LEN; + memset(data, 0, stats->n_stats * sizeof(u64)); - memset(data, 0, tx_size * sizeof(u64)); for (ring = 0, index = 0; ring < adapter->drv_tx_rings; ring++) { if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) { tx_ring = &adapter->tx_ring[ring]; @@ -1347,7 +1346,6 @@ static void qlcnic_get_ethtool_stats(struct net_device *dev, } } - memset(data, 0, stats->n_stats * sizeof(u64)); length = QLCNIC_STATS_LEN; for (index = 0; index < length; index++) { p = (char *)adapter + qlcnic_gstrings_stats[index].stat_offset; From 6c0fd0df0c44d1129ab65fc28d17f23a1c006a0c Mon Sep 17 00:00:00 2001 From: Manish Chopra Date: Mon, 22 Sep 2014 05:51:52 -0400 Subject: [PATCH 3/4] qlcnic: Remove __QLCNIC_DEV_UP bit check to read TX queues statistics. o TX queues stats must be read when queues are allocated regardless of interface is up or not. Signed-off-by: Manish Chopra Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c index 2d77b7694d16..863c4456d2d1 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c @@ -1339,7 +1339,7 @@ static void qlcnic_get_ethtool_stats(struct net_device *dev, memset(data, 0, stats->n_stats * sizeof(u64)); for (ring = 0, index = 0; ring < adapter->drv_tx_rings; ring++) { - if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) { + if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) { tx_ring = &adapter->tx_ring[ring]; data = qlcnic_fill_tx_queue_stats(data, tx_ring); qlcnic_update_stats(adapter); From 3456399b031c4bd71b90521301c646b62dfd0caa Mon Sep 17 00:00:00 2001 From: Manish Chopra Date: Mon, 22 Sep 2014 05:51:53 -0400 Subject: [PATCH 4/4] qlcnic: Fix ordering of stats in stats buffer. o When TX queues are not allocated, driver does not fill TX queues stats in the buffer. However, it is also not advancing data pointer by TX queue stats length, which would misplace all successive stats data in the buffer and will result in mismatch between stats strings and it's values. o Fix this by advancing data pointer by TX queue stats length when queues are not allocated. Signed-off-by: Manish Chopra Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c index 863c4456d2d1..494e8105adee 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c @@ -1343,6 +1343,8 @@ static void qlcnic_get_ethtool_stats(struct net_device *dev, tx_ring = &adapter->tx_ring[ring]; data = qlcnic_fill_tx_queue_stats(data, tx_ring); qlcnic_update_stats(adapter); + } else { + data += QLCNIC_TX_STATS_LEN; } }