qlcnic: Allow setting TX interrupt coalescing parameters from VF.

o Tx interrupt coalescing parameters can now be set from VF.
o Added validation code in PF to validate the parameters.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index 19878fb393d01bf2b42af9ab90bb6fdec02bcfec..5ceff4796df64fa0895aed176c5f42e83127ad5e 100644 (file)
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -2052,6 +2052,7 @@ out:
 
 static int qlcnic_alloc_adapter_resources(struct qlcnic_adapter *adapter)
 {
+       struct qlcnic_hardware_context *ahw = adapter->ahw;
        int err = 0;
 
        adapter->recv_ctx = kzalloc(sizeof(struct qlcnic_recv_context),
@@ -2061,6 +2062,18 @@ static int qlcnic_alloc_adapter_resources(struct qlcnic_adapter *adapter)
                goto err_out;
        }
 
+       if (qlcnic_83xx_check(adapter)) {
+               ahw->coal.type = QLCNIC_INTR_COAL_TYPE_RX_TX;
+               ahw->coal.tx_time_us = QLCNIC_DEF_INTR_COALESCE_TX_TIME_US;
+               ahw->coal.tx_packets = QLCNIC_DEF_INTR_COALESCE_TX_PACKETS;
+               ahw->coal.rx_time_us = QLCNIC_DEF_INTR_COALESCE_RX_TIME_US;
+               ahw->coal.rx_packets = QLCNIC_DEF_INTR_COALESCE_RX_PACKETS;
+       } else {
+               ahw->coal.type = QLCNIC_INTR_COAL_TYPE_RX;
+               ahw->coal.rx_time_us = QLCNIC_DEF_INTR_COALESCE_RX_TIME_US;
+               ahw->coal.rx_packets = QLCNIC_DEF_INTR_COALESCE_RX_PACKETS;
+       }
+
        /* clear stats */
        memset(&adapter->stats, 0, sizeof(adapter->stats));
 err_out:

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c
index 2801379915447dc54683719c40058d9d89f8387f..c7926ce85fecf76fa226694dc5265dbdc9a812c0 100644 (file)
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c
@@ -16,6 +16,7 @@
 #define QLC_VF_FLOOD_BIT       BIT_16
 #define QLC_FLOOD_MODE         0x5
 #define QLC_SRIOV_ALLOW_VLAN0  BIT_19
+#define QLC_INTR_COAL_TYPE_MASK        0x7
 
 static int qlcnic_sriov_pf_get_vport_handle(struct qlcnic_adapter *, u8);
 
@@ -1178,19 +1179,41 @@ static int qlcnic_sriov_validate_cfg_intrcoal(struct qlcnic_adapter *adapter,
 {
        struct qlcnic_nic_intr_coalesce *coal = &adapter->ahw->coal;
        u16 ctx_id, pkts, time;
+       int err = -EINVAL;
+       u8 type;
 
+       type = cmd->req.arg[1] & QLC_INTR_COAL_TYPE_MASK;
        ctx_id = cmd->req.arg[1] >> 16;
        pkts = cmd->req.arg[2] & 0xffff;
        time = cmd->req.arg[2] >> 16;
 
-       if (ctx_id != vf->rx_ctx_id)
-               return -EINVAL;
-       if (pkts > coal->rx_packets)
-               return -EINVAL;
-       if (time < coal->rx_time_us)
-               return -EINVAL;
+       switch (type) {
+       case QLCNIC_INTR_COAL_TYPE_RX:
+               if (ctx_id != vf->rx_ctx_id || pkts > coal->rx_packets ||
+                   time < coal->rx_time_us)
+                       goto err_label;
+               break;
+       case QLCNIC_INTR_COAL_TYPE_TX:
+               if (ctx_id != vf->tx_ctx_id || pkts > coal->tx_packets ||
+                   time < coal->tx_time_us)
+                       goto err_label;
+               break;
+       default:
+               netdev_err(adapter->netdev, "Invalid coalescing type 0x%x received\n",
+                          type);
+               return err;
+       }
 
        return 0;
+
+err_label:
+       netdev_err(adapter->netdev, "Expected: rx_ctx_id 0x%x rx_packets 0x%x rx_time_us 0x%x tx_ctx_id 0x%x tx_packets 0x%x tx_time_us 0x%x\n",
+                  vf->rx_ctx_id, coal->rx_packets, coal->rx_time_us,
+                  vf->tx_ctx_id, coal->tx_packets, coal->tx_time_us);
+       netdev_err(adapter->netdev, "Received: ctx_id 0x%x packets 0x%x time_us 0x%x type 0x%x\n",
+                  ctx_id, pkts, time, type);
+
+       return err;
 }
 
 static int qlcnic_sriov_pf_cfg_intrcoal_cmd(struct qlcnic_bc_trans *tran,