netdev - [PATCH net-next v2 3/7] qlcnic: Enhanced channel configuration logs

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Message-Id: <1366218359-17701-4-git-send-email-shahed.shaikh@qlogic.com>
Date:	Wed, 17 Apr 2013 13:05:55 -0400
From:	Shahed Shaikh <shahed.shaikh@...gic.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, Dept_NX_Linux_NIC_Driver@...gic.com,
	Manish Chopra <manish.chopra@...gic.com>
Subject: [PATCH net-next v2 3/7] qlcnic: Enhanced channel configuration logs

From: Manish Chopra <manish.chopra@...gic.com>

Signed-off-by: Manish Chopra <manish.chopra@...gic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@...gic.com>
---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic.h        |    3 +-
 .../net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c    |    2 +-
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c   |   35 ++++++++++++++++----
 3 files changed, 31 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index 16ed1a6..696d196 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -1478,7 +1478,8 @@ void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings);
 int qlcnic_diag_alloc_res(struct net_device *netdev, int test);
 netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
 int qlcnic_set_max_rss(struct qlcnic_adapter *, u8, size_t);
-int qlcnic_validate_max_rss(u8, u8);
+int qlcnic_validate_max_rss(struct qlcnic_adapter *adapter,
+			    __u32 val);
 void qlcnic_alloc_lb_filters_mem(struct qlcnic_adapter *adapter);
 int qlcnic_enable_msix(struct qlcnic_adapter *, u32);
 
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
index 7b56a50..184f0d2 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
@@ -635,7 +635,7 @@ static int qlcnic_set_channels(struct net_device *dev,
 	    channel->tx_count != channel->max_tx)
 		return -EINVAL;
 
-	err = qlcnic_validate_max_rss(channel->max_rx, channel->rx_count);
+	err = qlcnic_validate_max_rss(adapter, channel->rx_count);
 	if (err)
 		return err;
 
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index edbc85f..f35c504 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -3240,20 +3240,41 @@ qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
 	return err;
 }
 
-int qlcnic_validate_max_rss(u8 max_hw, u8 val)
+int qlcnic_validate_max_rss(struct qlcnic_adapter *adapter,
+			    __u32 val)
 {
+	struct net_device *netdev = adapter->netdev;
 	u32 max_allowed;
+	u8 max_hw = adapter->ahw->max_rx_ques;
 
-	if (max_hw > QLC_MAX_SDS_RINGS) {
-		max_hw = QLC_MAX_SDS_RINGS;
-		pr_info("max rss reset to %d\n", QLC_MAX_SDS_RINGS);
+	if (val > QLC_MAX_SDS_RINGS) {
+		netdev_err(netdev, "RSS value should not be higher than %u\n",
+			   QLC_MAX_SDS_RINGS);
+		return -EINVAL;
 	}
 
 	max_allowed = rounddown_pow_of_two(min_t(int, max_hw,
 						 num_online_cpus()));
-	if ((val > max_allowed) || (val < 2) || !is_power_of_2(val)) {
-		pr_info("rss_ring valid range [2 - %x] in powers of 2\n",
-			max_allowed);
+
+	if ((val > max_allowed) || (val <  2) || !is_power_of_2(val)) {
+		if (!is_power_of_2(val))
+			netdev_err(netdev, "RSS value should be a power of 2\n");
+
+		if (val < 2)
+			netdev_err(netdev, "RSS value should not be lower than 2\n");
+
+		if (val > max_hw)
+			netdev_err(netdev,
+				   "RSS value should not be higher than[%u], the max RSS rings supported by the adapter\n",
+				   max_hw);
+
+		if (val > num_online_cpus())
+			netdev_err(netdev,
+				   "RSS value should not be higher than[%u], the max number of CPUs in the system\n",
+				   num_online_cpus());
+
+		netdev_err(netdev, "Unable to configure %u RSS rings\n", val);
+
 		return -EINVAL;
 	}
 	return 0;
-- 
1.5.6

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