diff options
| author | Anjali Singhai Jain <anjali.singhai@intel.com> | 2013-11-28 06:39:33 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2014-01-05 18:20:28 -0800 |
| commit | 298deef1f439b31af8c2a63dda6211b2dbf2f51a (patch) | |
| tree | c0e238f6d8f92bbe049d56413cd61f15f3b8b434 | |
| parent | b912b2f8fc71df4c3ffa7a9fe2c2227e8bcdaa07 (diff) | |
| download | linux-298deef1f439b31af8c2a63dda6211b2dbf2f51a.tar.bz2 | |
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>
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 2584d6b610ee..fac4fb37f87b 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -77,7 +77,6 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data, /* grab the next descriptor */ i = tx_ring->next_to_use; 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; @@ -129,15 +128,23 @@ int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data, /* Now program a dummy descriptor */ i = tx_ring->next_to_use; 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; + /* 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); 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); + /* set the timestamp */ + tx_buf->time_stamp = jiffies; + /* Force memory writes to complete before letting h/w * know there are new descriptors to fetch. (Only * applicable for weak-ordered memory model archs, |