i40e: refactor fdir setup function

This function did a lot of unnecessary cpu_to_xxx(foo) and making it
worse, each of these calls caused a lot of line wrapping.

Fix look and feel via a refactor of this function.  No functional
changes.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 8fc313c..41be7a7 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -37,6 +37,7 @@ static inline __le64 build_ctob(u32 td_cmd, u32 td_offset, unsigned int size,
                           ((u64)td_tag  << I40E_TXD_QW1_L2TAG1_SHIFT));
 }
 
+#define I40E_TXD_CMD (I40E_TX_DESC_CMD_EOP | I40E_TX_DESC_CMD_RS)
 /**
  * i40e_program_fdir_filter - Program a Flow Director filter
  * @fdir_input: Packet data that will be filter parameters
@@ -50,6 +51,7 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
        struct i40e_tx_buffer *tx_buf;
        struct i40e_tx_desc *tx_desc;
        struct i40e_ring *tx_ring;
+       unsigned int fpt, dcc;
        struct i40e_vsi *vsi;
        struct device *dev;
        dma_addr_t dma;
@@ -68,7 +70,7 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
        dev = tx_ring->dev;
 
        dma = dma_map_single(dev, fdir_data->raw_packet,
-                               I40E_FDIR_MAX_RAW_PACKET_LOOKUP, DMA_TO_DEVICE);
+                            I40E_FDIR_MAX_RAW_PACKET_LOOKUP, DMA_TO_DEVICE);
        if (dma_mapping_error(dev, dma))
                goto dma_fail;
 
@@ -77,74 +79,61 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
        fdir_desc = I40E_TX_FDIRDESC(tx_ring, i);
        tx_buf = &tx_ring->tx_bi[i];
 
-       i++;
-       tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
+       tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0;
 
-       fdir_desc->qindex_flex_ptype_vsi = cpu_to_le32((fdir_data->q_index
-                                            << I40E_TXD_FLTR_QW0_QINDEX_SHIFT)
-                                            & I40E_TXD_FLTR_QW0_QINDEX_MASK);
+       fpt = (fdir_data->q_index << I40E_TXD_FLTR_QW0_QINDEX_SHIFT) &
+             I40E_TXD_FLTR_QW0_QINDEX_MASK;
 
-       fdir_desc->qindex_flex_ptype_vsi |= cpu_to_le32((fdir_data->flex_off
-                                           << I40E_TXD_FLTR_QW0_FLEXOFF_SHIFT)
-                                           & I40E_TXD_FLTR_QW0_FLEXOFF_MASK);
+       fpt |= (fdir_data->flex_off << I40E_TXD_FLTR_QW0_FLEXOFF_SHIFT) &
+              I40E_TXD_FLTR_QW0_FLEXOFF_MASK;
 
-       fdir_desc->qindex_flex_ptype_vsi |= cpu_to_le32((fdir_data->pctype
-                                            << I40E_TXD_FLTR_QW0_PCTYPE_SHIFT)
-                                            & I40E_TXD_FLTR_QW0_PCTYPE_MASK);
+       fpt |= (fdir_data->pctype << I40E_TXD_FLTR_QW0_PCTYPE_SHIFT) &
+              I40E_TXD_FLTR_QW0_PCTYPE_MASK;
 
        /* Use LAN VSI Id if not programmed by user */
        if (fdir_data->dest_vsi == 0)
-               fdir_desc->qindex_flex_ptype_vsi |=
-                                         cpu_to_le32((pf->vsi[pf->lan_vsi]->id)
-                                          << I40E_TXD_FLTR_QW0_DEST_VSI_SHIFT);
+               fpt |= (pf->vsi[pf->lan_vsi]->id) <<
+                      I40E_TXD_FLTR_QW0_DEST_VSI_SHIFT;
        else
-               fdir_desc->qindex_flex_ptype_vsi |=
-                       cpu_to_le32((((u32)fdir_data->dest_vsi) <<
-                                         I40E_TXD_FLTR_QW0_DEST_VSI_SHIFT) &
-                                   I40E_TXD_FLTR_QW0_DEST_VSI_MASK);
+               fpt |= ((u32)fdir_data->dest_vsi <<
+                       I40E_TXD_FLTR_QW0_DEST_VSI_SHIFT) &
+                      I40E_TXD_FLTR_QW0_DEST_VSI_MASK;
+
+       fdir_desc->qindex_flex_ptype_vsi = cpu_to_le32(fpt);
 
-       fdir_desc->dtype_cmd_cntindex =
-                                   cpu_to_le32(I40E_TX_DESC_DTYPE_FILTER_PROG);
+       dcc = I40E_TX_DESC_DTYPE_FILTER_PROG;
 
        if (add)
-               fdir_desc->dtype_cmd_cntindex |= cpu_to_le32(
-                                      I40E_FILTER_PROGRAM_DESC_PCMD_ADD_UPDATE
-                                       << I40E_TXD_FLTR_QW1_PCMD_SHIFT);
+               dcc |= I40E_FILTER_PROGRAM_DESC_PCMD_ADD_UPDATE <<
+                      I40E_TXD_FLTR_QW1_PCMD_SHIFT;
        else
-               fdir_desc->dtype_cmd_cntindex |= cpu_to_le32(
-                                          I40E_FILTER_PROGRAM_DESC_PCMD_REMOVE
-                                          << I40E_TXD_FLTR_QW1_PCMD_SHIFT);
+               dcc |= I40E_FILTER_PROGRAM_DESC_PCMD_REMOVE <<
+                      I40E_TXD_FLTR_QW1_PCMD_SHIFT;
 
-       fdir_desc->dtype_cmd_cntindex |= cpu_to_le32((fdir_data->dest_ctl
-                                         << I40E_TXD_FLTR_QW1_DEST_SHIFT)
-                                         & I40E_TXD_FLTR_QW1_DEST_MASK);
+       dcc |= (fdir_data->dest_ctl << I40E_TXD_FLTR_QW1_DEST_SHIFT) &
+              I40E_TXD_FLTR_QW1_DEST_MASK;
 
-       fdir_desc->dtype_cmd_cntindex |= cpu_to_le32(
-                    (fdir_data->fd_status << I40E_TXD_FLTR_QW1_FD_STATUS_SHIFT)
-                     & I40E_TXD_FLTR_QW1_FD_STATUS_MASK);
+       dcc |= (fdir_data->fd_status << I40E_TXD_FLTR_QW1_FD_STATUS_SHIFT) &
+              I40E_TXD_FLTR_QW1_FD_STATUS_MASK;
 
        if (fdir_data->cnt_index != 0) {
-               fdir_desc->dtype_cmd_cntindex |=
-                                   cpu_to_le32(I40E_TXD_FLTR_QW1_CNT_ENA_MASK);
-               fdir_desc->dtype_cmd_cntindex |=
-                       cpu_to_le32((((u32)fdir_data->cnt_index) <<
-                                          I40E_TXD_FLTR_QW1_CNTINDEX_SHIFT) &
-                                   I40E_TXD_FLTR_QW1_CNTINDEX_MASK);
+               dcc |= I40E_TXD_FLTR_QW1_CNT_ENA_MASK;
+               dcc |= ((u32)fdir_data->cnt_index <<
+                       I40E_TXD_FLTR_QW1_CNTINDEX_SHIFT) &
+                      I40E_TXD_FLTR_QW1_CNTINDEX_MASK;
        }
 
+       fdir_desc->dtype_cmd_cntindex = cpu_to_le32(dcc);
        fdir_desc->fd_id = cpu_to_le32(fdir_data->fd_id);
 
        /* Now program a dummy descriptor */
        i = tx_ring->next_to_use;
        tx_desc = I40E_TX_DESC(tx_ring, i);
 
-       i++;
-       tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
+       tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0;
 
        tx_desc->buffer_addr = cpu_to_le64(dma);
-       td_cmd = I40E_TX_DESC_CMD_EOP |
-                I40E_TX_DESC_CMD_RS  |
-                I40E_TX_DESC_CMD_DUMMY;
+       td_cmd = I40E_TXD_CMD | I40E_TX_DESC_CMD_DUMMY;
 
        tx_desc->cmd_type_offset_bsz =
                build_ctob(td_cmd, 0, I40E_FDIR_MAX_RAW_PACKET_LOOKUP, 0);
@@ -1254,7 +1243,6 @@ static void i40e_atr(struct i40e_ring *tx_ring, struct sk_buff *skb,
        fdir_desc->dtype_cmd_cntindex = cpu_to_le32(dtype_cmd);
 }
 
-#define I40E_TXD_CMD (I40E_TX_DESC_CMD_EOP | I40E_TX_DESC_CMD_RS)
 /**
  * i40e_tx_prepare_vlan_flags - prepare generic TX VLAN tagging flags for HW
  * @skb:     send buffer