[dpdk-stable] patch 'net/qede/base: fix multiple acquisition requests by VF' has been queued to stable release 16.11.1

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 16.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable
yet. It will be pushed if I get no objections before 01/28/17.
So please shout if anyone has objections.

---

Note 16.11 is a LTS release. v16.11.1 is planned to be released
shortly (about 2-3 weeks) after v17.02.

---

Thanks.

	--yliu

---
>From fb347e719be1e05dcea0a6f8126d568ade0bd209 Mon Sep 17 00:00:00 2001
From: Rasesh Mody <rasesh.mody at cavium.com>
Date: Thu, 22 Dec 2016 16:49:59 -0800
Subject: [PATCH] net/qede/base: fix multiple acquisition requests by VF

[ upstream commit a1f761e16f774ed6eb4721d589bf3827e9519534 ]

There are certain conditions under which VF would infinitely send
ACQUIRE messages, as it will fail to understand that PF has rejected
the ACQUIRE request. Fix to reject multiple acquisition requests by VF.

Fixes: 22d07d939c3c ("net/qede/base: update")

Signed-off-by: Rasesh Mody <rasesh.mody at cavium.com>
---
 drivers/net/qede/base/ecore_vf.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/qede/base/ecore_vf.c b/drivers/net/qede/base/ecore_vf.c
index be8b1ec..161b317 100644
--- a/drivers/net/qede/base/ecore_vf.c
+++ b/drivers/net/qede/base/ecore_vf.c
@@ -296,6 +296,14 @@ static enum _ecore_status_t ecore_vf_pf_acquire(struct ecore_hwfn *p_hwfn)
 						VFPF_ACQUIRE_CAP_PRE_FP_HSI;
 				}
 			}
+
+			/* If PF/VF are using same Major, PF must have had
+			 * it's reasons. Simply fail.
+			 */
+			DP_NOTICE(p_hwfn, false,
+				  "PF rejected acquisition by VF\n");
+			rc = ECORE_INVAL;
+			goto exit;
 		} else {
 			DP_ERR(p_hwfn,
 			       "PF returned err %d to VF acquisition request\n",
-- 
1.9.0