patches for DPDK stable branches
 help / color / Atom feed
* [dpdk-stable] [DPDK] net/i40e: fix conflict with multi-driver
@ 2019-09-11  3:05 alvinx.zhang
  0 siblings, 0 replies; only message in thread
From: alvinx.zhang @ 2019-09-11  3:05 UTC (permalink / raw)
  To: qabuild; +Cc: AlvinZhang, stable

From: AlvinZhang <alvinx.zhang@intel.com>

If support-multi-driver option been set, we suppose the DPDK will
not modify the value of global register GLQF_FD_MSK. Current
situation is if we create a new flow with 'flow creat ...' command,
the register value may be changed.

Fixes: cfdfca493cae ("net/i40e: fix multiple driver support")
Cc: stable@dpdk.org

Change-Id: Ie9f41943a590f2d7a85b94fa7017f39a30916492
Signed-off-by: AlvinZhang <alvinx.zhang@intel.com>
---
 drivers/net/i40e/i40e_flow.c | 34 +++++++++++++++++++++++++++-------
 1 file changed, 27 insertions(+), 7 deletions(-)

diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
index e902a35..8c54394 100644
--- a/drivers/net/i40e/i40e_flow.c
+++ b/drivers/net/i40e/i40e_flow.c
@@ -2349,6 +2349,33 @@ static int i40e_flow_destroy_tunnel_filter(struct i40e_pf *pf,
 	if (num < 0)
 		return -EINVAL;
 
+	if (pf->support_multi_driver) {
+		for (i = 0; i < num; i++)
+			if (i40e_read_rx_ctl(hw,
+					I40E_GLQF_FD_MSK(i, pctype)) !=
+					mask_reg[i]) {
+				PMD_DRV_LOG(ERR, "Input set setting is not"
+						" supported.");
+				return -1;
+			}
+		for (i = num; i < I40E_INSET_MASK_NUM_REG; i++)
+			if (i40e_read_rx_ctl(hw,
+					I40E_GLQF_FD_MSK(i, pctype)) != 0) {
+				PMD_DRV_LOG(ERR, "Input set setting is not"
+						" supported.");
+				return -1;
+			}
+
+	} else {
+		for (i = 0; i < num; i++)
+			i40e_check_write_reg(hw, I40E_GLQF_FD_MSK(i, pctype),
+				mask_reg[i]);
+		/*clear unused mask registers of the pctype */
+		for (i = num; i < I40E_INSET_MASK_NUM_REG; i++)
+			i40e_check_write_reg(hw,
+					I40E_GLQF_FD_MSK(i, pctype), 0);
+	}
+
 	inset_reg |= i40e_translate_input_set_reg(hw->mac.type, input_set);
 
 	i40e_check_write_reg(hw, I40E_PRTQF_FD_INSET(pctype, 0),
@@ -2357,13 +2384,6 @@ static int i40e_flow_destroy_tunnel_filter(struct i40e_pf *pf,
 			     (uint32_t)((inset_reg >>
 					 I40E_32_BIT_WIDTH) & UINT32_MAX));
 
-	for (i = 0; i < num; i++)
-		i40e_check_write_reg(hw, I40E_GLQF_FD_MSK(i, pctype),
-				     mask_reg[i]);
-
-	/*clear unused mask registers of the pctype */
-	for (i = num; i < I40E_INSET_MASK_NUM_REG; i++)
-		i40e_check_write_reg(hw, I40E_GLQF_FD_MSK(i, pctype), 0);
 	I40E_WRITE_FLUSH(hw);
 
 	pf->fdir.input_set[pctype] = input_set;
-- 
1.8.3.1


^ permalink raw reply	[flat|nested] only message in thread

only message in thread, back to index

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-09-11  3:05 [dpdk-stable] [DPDK] net/i40e: fix conflict with multi-driver alvinx.zhang

patches for DPDK stable branches

Archives are clonable:
	git clone --mirror http://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ http://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable


Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/ public-inbox