Commit 298deef1 authored by Anjali Singhai Jain's avatar Anjali Singhai Jain Committed by Jeff Kirsher

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: default avatarAnjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: default avatarKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent b912b2f8
...@@ -77,7 +77,6 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data, ...@@ -77,7 +77,6 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
/* grab the next descriptor */ /* grab the next descriptor */
i = tx_ring->next_to_use; i = tx_ring->next_to_use;
fdir_desc = I40E_TX_FDIRDESC(tx_ring, i); fdir_desc = I40E_TX_FDIRDESC(tx_ring, i);
tx_buf = &tx_ring->tx_bi[i];
tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0; tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0;
...@@ -129,15 +128,23 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data, ...@@ -129,15 +128,23 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
/* Now program a dummy descriptor */ /* Now program a dummy descriptor */
i = tx_ring->next_to_use; i = tx_ring->next_to_use;
tx_desc = I40E_TX_DESC(tx_ring, i); tx_desc = I40E_TX_DESC(tx_ring, i);
tx_buf = &tx_ring->tx_bi[i];
tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0; tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0;
/* record length, and DMA address */
dma_unmap_len_set(tx_buf, len, I40E_FDIR_MAX_RAW_PACKET_LOOKUP);
dma_unmap_addr_set(tx_buf, dma, dma);
tx_desc->buffer_addr = cpu_to_le64(dma); tx_desc->buffer_addr = cpu_to_le64(dma);
td_cmd = I40E_TXD_CMD | I40E_TX_DESC_CMD_DUMMY; td_cmd = I40E_TXD_CMD | I40E_TX_DESC_CMD_DUMMY;
tx_desc->cmd_type_offset_bsz = tx_desc->cmd_type_offset_bsz =
build_ctob(td_cmd, 0, I40E_FDIR_MAX_RAW_PACKET_LOOKUP, 0); build_ctob(td_cmd, 0, I40E_FDIR_MAX_RAW_PACKET_LOOKUP, 0);
/* set the timestamp */
tx_buf->time_stamp = jiffies;
/* Force memory writes to complete before letting h/w /* Force memory writes to complete before letting h/w
* know there are new descriptors to fetch. (Only * know there are new descriptors to fetch. (Only
* applicable for weak-ordered memory model archs, * applicable for weak-ordered memory model archs,
......
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