From 298deef1f439b31af8c2a63dda6211b2dbf2f51a Mon Sep 17 00:00:00 2001 From: Anjali Singhai Jain Date: Thu, 28 Nov 2013 06:39:33 +0000 Subject: [PATCH] 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 Signed-off-by: Jesse Brandeburg Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) 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, -- 2.11.0