[dpdk-stable] patch 'net/bnxt: fix clear port stats' has been queued to stable release 18.05.1

[Christian Ehrhardt]

Hi,

FYI, your patch has been queued to stable release 18.05.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/01/18. So please
shout if anyone has objections.

Thanks.

Christian Ehrhardt <christian.ehrhardt at canonical.com>

---
>From 194d3495a8d404365e00ffe3a7009b205a8f6a34 Mon Sep 17 00:00:00 2001
From: Ajit Khaparde <ajit.khaparde at broadcom.com>
Date: Thu, 28 Jun 2018 13:15:27 -0700
Subject: [PATCH] net/bnxt: fix clear port stats

[ upstream commit a15fd8c005e75022140b5d83d15f0b10100b94f2 ]

PORT_CLR_STATS is not allowed for VFs, NPAR, MultiHost functions
or when SR-IOV is enabled.
Don't send the HWRM command in such cases.

Fixes: bfb9c2260be2 ("net/bnxt: support xstats get/reset")

Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
---
 drivers/net/bnxt/bnxt.h      | 4 ++++
 drivers/net/bnxt/bnxt_hwrm.c | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index afaaf8c41..d19aea569 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -98,6 +98,7 @@ struct bnxt_child_vf_info {
 struct bnxt_pf_info {
 #define BNXT_FIRST_PF_FID	1
 #define BNXT_MAX_VFS(bp)	(bp->pf.max_vfs)
+#define BNXT_TOTAL_VFS(bp)	((bp)->pf.total_vfs)
 #define BNXT_FIRST_VF_FID	128
 #define BNXT_PF_RINGS_USED(bp)	bnxt_get_num_queues(bp)
 #define BNXT_PF_RINGS_AVAIL(bp)	(bp->pf.max_cp_rings - BNXT_PF_RINGS_USED(bp))
@@ -105,6 +106,9 @@ struct bnxt_pf_info {
 	uint16_t		first_vf_id;
 	uint16_t		active_vfs;
 	uint16_t		max_vfs;
+	uint16_t		total_vfs; /* Total VFs possible.
+					    * Not necessarily enabled.
+					    */
 	uint32_t		func_cfg_flags;
 	void			*vf_req_buf;
 	rte_iova_t		vf_req_buf_dma_addr;
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index d6fdc1b88..f441d4610 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -506,6 +506,7 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 	if (BNXT_PF(bp)) {
 		bp->pf.port_id = resp->port_id;
 		bp->pf.first_vf_id = rte_le_to_cpu_16(resp->first_vf_id);
+		bp->pf.total_vfs = rte_le_to_cpu_16(resp->max_vfs);
 		new_max_vfs = bp->pdev->max_vfs;
 		if (new_max_vfs != bp->pf.max_vfs) {
 			if (bp->pf.vf_info)
@@ -3151,7 +3152,9 @@ int bnxt_hwrm_port_clr_stats(struct bnxt *bp)
 	struct bnxt_pf_info *pf = &bp->pf;
 	int rc;
 
-	if (!(bp->flags & BNXT_FLAG_PORT_STATS))
+	/* Not allowed on NS2 device, NPAR, MultiHost, VF */
+	if (!(bp->flags & BNXT_FLAG_PORT_STATS) || BNXT_VF(bp) ||
+	    BNXT_NPAR(bp) || BNXT_MH(bp) || BNXT_TOTAL_VFS(bp))
 		return 0;
 
 	HWRM_PREP(req, PORT_CLR_STATS);
-- 
2.17.1