[dpdk-stable] patch 'net/igb: fix add/delete of flex filters' has been queued to stable release 17.05.1

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 17.05.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/22/17. So please
shout if anyone has objections.

Thanks.

	--yliu

---
>From 4318c5f6057a9ba328d80e2662b94af3492f6391 Mon Sep 17 00:00:00 2001
From: Markus Theil <markus.theil at tu-ilmenau.de>
Date: Mon, 22 May 2017 12:17:50 +0200
Subject: [PATCH] net/igb: fix add/delete of flex filters

[ upstream commit 167e7b9ae531491f10f495587cb59ae271430abb ]

Before this patch, flex_filter->index was always zero when it was read
and used after rte_zmalloc. The corresponding code was therefore moved
into the add and delete parts of the if/else statement.

Fixes: 231d43909a31 ("igb: migrate flex filter to new API")

Signed-off-by: Markus Theil <markus.theil at tu-ilmenau.de>
Acked-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
---
 drivers/net/e1000/igb_ethdev.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 5af3ac8..d18dd48 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -3912,10 +3912,6 @@ eth_igb_add_del_flex_filter(struct rte_eth_dev *dev,
 	}
 
 	wufc = E1000_READ_REG(hw, E1000_WUFC);
-	if (flex_filter->index < E1000_MAX_FHFT)
-		reg_off = E1000_FHFT(flex_filter->index);
-	else
-		reg_off = E1000_FHFT_EXT(flex_filter->index - E1000_MAX_FHFT);
 
 	if (add) {
 		if (eth_igb_flex_filter_lookup(&filter_info->flex_list,
@@ -3945,6 +3941,11 @@ eth_igb_add_del_flex_filter(struct rte_eth_dev *dev,
 			return -ENOSYS;
 		}
 
+		if (flex_filter->index < E1000_MAX_FHFT)
+			reg_off = E1000_FHFT(flex_filter->index);
+		else
+			reg_off = E1000_FHFT_EXT(flex_filter->index - E1000_MAX_FHFT);
+
 		E1000_WRITE_REG(hw, E1000_WUFC, wufc | E1000_WUFC_FLEX_HQ |
 				(E1000_WUFC_FLX0 << flex_filter->index));
 		queueing = filter->len |
@@ -3973,6 +3974,11 @@ eth_igb_add_del_flex_filter(struct rte_eth_dev *dev,
 			return -ENOENT;
 		}
 
+		if (it->index < E1000_MAX_FHFT)
+			reg_off = E1000_FHFT(it->index);
+		else
+			reg_off = E1000_FHFT_EXT(it->index - E1000_MAX_FHFT);
+
 		for (i = 0; i < E1000_FHFT_SIZE_IN_DWD; i++)
 			E1000_WRITE_REG(hw, reg_off + i * sizeof(uint32_t), 0);
 		E1000_WRITE_REG(hw, E1000_WUFC, wufc &
-- 
2.7.4