qlcnic: Enhance channel configuration logs

o Add logs for various failure conditions during channel configuration.

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 28 insertions, 8 deletions

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index 8d02dd75c9a2..f699ccee65dc 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -1474,7 +1474,7 @@ 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 *, __u32);
 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 9f7aade4667c..59350c287f63 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 247a9f9b7bdc..0052953a255d 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -3273,20 +3273,40 @@ 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;
+        u8 max_hw = adapter->ahw->max_rx_ques;
         u32 max_allowed;
 
-        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 (!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], number of online CPUs in the system\n",
+                                   num_online_cpus());
+
+                netdev_err(netdev, "Unable to configure %u RSS rings\n", val);
+
                 return -EINVAL;
         }
         return 0;