i40e: Record dma buffer info for dummy packets
Save information that we can use while cleaning the tx ring. Also record the time_stamp since we will need it to check tx hangs. Change-Id: Ia3f1c17f6fec9bcb7fef2542d77eac7f6c4f115c Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> 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>
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@ -77,7 +77,6 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
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/* grab the next descriptor */
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i = tx_ring->next_to_use;
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fdir_desc = I40E_TX_FDIRDESC(tx_ring, i);
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tx_buf = &tx_ring->tx_bi[i];
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tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0;
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@ -129,15 +128,23 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
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/* Now program a dummy descriptor */
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i = tx_ring->next_to_use;
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tx_desc = I40E_TX_DESC(tx_ring, i);
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tx_buf = &tx_ring->tx_bi[i];
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tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0;
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/* record length, and DMA address */
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dma_unmap_len_set(tx_buf, len, I40E_FDIR_MAX_RAW_PACKET_LOOKUP);
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dma_unmap_addr_set(tx_buf, dma, dma);
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tx_desc->buffer_addr = cpu_to_le64(dma);
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td_cmd = I40E_TXD_CMD | I40E_TX_DESC_CMD_DUMMY;
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tx_desc->cmd_type_offset_bsz =
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build_ctob(td_cmd, 0, I40E_FDIR_MAX_RAW_PACKET_LOOKUP, 0);
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/* set the timestamp */
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tx_buf->time_stamp = jiffies;
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/* Force memory writes to complete before letting h/w
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* know there are new descriptors to fetch. (Only
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* applicable for weak-ordered memory model archs,
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