From: Zhe Tao <zhe.tao@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v2] i40e:Fix the Description Done check mechanism for i40e
Date: Wed, 8 Jul 2015 17:29:19 +0800 [thread overview]
Message-ID: <1436347759-31915-1-git-send-email-zhe.tao@intel.com> (raw)
In-Reply-To: <1435943507-2679-1-git-send-email-zhe.tao@intel.com>
If the descriptor the device derive is handling is the context descriptor its type will be 0x1, so using the not expression, the device driver will consider the descriptor has been completed for transmission even its DD field is still 0x1 which means NIC has't finished the operation on this descriptor.
Signed-off-by: Zhe Tao <zhe.tao@intel.com>
---
drivers/net/i40e/i40e_fdir.c | 3 ++-
drivers/net/i40e/i40e_rxtx.c | 10 ++++++----
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
index 4bf98d0..f3cb757 100644
--- a/drivers/net/i40e/i40e_fdir.c
+++ b/drivers/net/i40e/i40e_fdir.c
@@ -1110,7 +1110,8 @@ i40e_fdir_filter_programming(struct i40e_pf *pf,
for (i = 0; i < I40E_FDIR_WAIT_COUNT; i++) {
rte_delay_us(I40E_FDIR_WAIT_INTERVAL_US);
- if (txdp->cmd_type_offset_bsz &
+ if ((txdp->cmd_type_offset_bsz &
+ rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) ==
rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))
break;
}
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 2de0ac4..7c0c684 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -574,8 +574,9 @@ i40e_xmit_cleanup(struct i40e_tx_queue *txq)
desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);
desc_to_clean_to = sw_ring[desc_to_clean_to].last_id;
- if (!(txd[desc_to_clean_to].cmd_type_offset_bsz &
- rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))) {
+ if ((txd[desc_to_clean_to].cmd_type_offset_bsz &
+ rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) !=
+ rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE)) {
PMD_TX_FREE_LOG(DEBUG, "TX descriptor %4u is not done "
"(port=%d queue=%d)", desc_to_clean_to,
txq->port_id, txq->queue_id);
@@ -1431,8 +1432,9 @@ i40e_tx_free_bufs(struct i40e_tx_queue *txq)
struct i40e_tx_entry *txep;
uint16_t i;
- if (!(txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
- rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE)))
+ if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
+ rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) !=
+ rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))
return 0;
txep = &(txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)]);
--
1.8.4.2
next prev parent reply other threads:[~2015-07-08 9:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-03 17:11 [dpdk-dev] [PATCH] i40e: Fix the clean up function for i40e, the DD bits are multiplex with descriptor type field. so cannot use "not zero" as the rule for the completion of Tx descriptor Zhe Tao
2015-07-08 9:29 ` Zhe Tao [this message]
2015-07-09 2:58 ` [dpdk-dev] [PATCH v3] i40e:Fix the Descriptor Done check mechanism for i40e Zhe Tao
2015-07-09 3:31 ` Wu, Jingjing
2015-07-10 16:56 ` Thomas Monjalon
2015-07-16 19:20 ` [dpdk-dev] [PATCH] i40e: Fix the clean up function for i40e, the DD bits are multiplex with descriptor type field. so cannot use "not zero" as the rule for the completion of Tx descriptor Zhang, Helin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1436347759-31915-1-git-send-email-zhe.tao@intel.com \
--to=zhe.tao@intel.com \
--cc=dev@dpdk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).