[dpdk-stable] patch 'net/netvsc: fix memory free on device close' has been queued to stable release 19.11.3

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 19.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/21/20. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Thanks.

Luca Boccassi

---
>From 81441b4e4f4e65b722bd4cdb0d967e47244632f1 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <stephen at networkplumber.org>
Date: Tue, 31 Mar 2020 10:14:00 -0700
Subject: [PATCH] net/netvsc: fix memory free on device close

[ upstream commit 30408aab2d4e0fd9a5d2b4e2ef2a3a7b9e6c95bf ]

The netvsc PMD was putting the mac address in private data but the
core rte_ethdev doesn't allow that it. It has to be in rte_malloc'd
memory or a message will be printed on shutdown/close.
 EAL: Invalid memory

Fixes: f8279f47dd89 ("net/netvsc: fix crash in secondary process")
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 drivers/net/netvsc/hn_ethdev.c | 16 ++++++++++------
 drivers/net/netvsc/hn_var.h    |  2 --
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/net/netvsc/hn_ethdev.c b/drivers/net/netvsc/hn_ethdev.c
index ac66108380..05f1a25a1a 100644
--- a/drivers/net/netvsc/hn_ethdev.c
+++ b/drivers/net/netvsc/hn_ethdev.c
@@ -134,8 +134,6 @@ eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
 static void
 eth_dev_vmbus_release(struct rte_eth_dev *eth_dev)
 {
-	/* mac_addrs must not be freed alone because part of dev_private */
-	eth_dev->data->mac_addrs = NULL;
 	/* free ether device */
 	rte_eth_dev_release_port(eth_dev);
 
@@ -937,9 +935,6 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 	eth_dev->tx_pkt_burst = &hn_xmit_pkts;
 	eth_dev->rx_pkt_burst = &hn_recv_pkts;
 
-	/* Since Hyper-V only supports one MAC address, just use local data */
-	eth_dev->data->mac_addrs = &hv->mac_addr;
-
 	/*
 	 * for secondary processes, we don't initialize any further as primary
 	 * has already done this work.
@@ -947,6 +942,15 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return 0;
 
+	/* Since Hyper-V only supports one MAC address */
+	eth_dev->data->mac_addrs = rte_calloc("hv_mac", HN_MAX_MAC_ADDRS,
+					      sizeof(struct rte_ether_addr), 0);
+	if (eth_dev->data->mac_addrs == NULL) {
+		PMD_INIT_LOG(ERR,
+			     "Failed to allocate memory store MAC addresses");
+		return -ENOMEM;
+	}
+
 	hv->vmbus = vmbus;
 	hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
 	hv->chim_res  = &vmbus->resource[HV_SEND_BUF_MAP];
@@ -989,7 +993,7 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 	if (err)
 		goto failed;
 
-	err = hn_rndis_get_eaddr(hv, hv->mac_addr.addr_bytes);
+	err = hn_rndis_get_eaddr(hv, eth_dev->data->mac_addrs->addr_bytes);
 	if (err)
 		goto failed;
 
diff --git a/drivers/net/netvsc/hn_var.h b/drivers/net/netvsc/hn_var.h
index 822d737bd3..b4c6171737 100644
--- a/drivers/net/netvsc/hn_var.h
+++ b/drivers/net/netvsc/hn_var.h
@@ -139,8 +139,6 @@ struct hn_data {
 	uint8_t		rss_key[40];
 	uint16_t	rss_ind[128];
 
-	struct rte_ether_addr mac_addr;
-
 	struct rte_eth_dev_owner owner;
 	struct rte_intr_handle vf_intr;
 
-- 
2.20.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2020-05-19 14:04:46.378461418 +0100
+++ 0045-net-netvsc-fix-memory-free-on-device-close.patch	2020-05-19 14:04:44.184647792 +0100
@@ -1,15 +1,16 @@
-From 30408aab2d4e0fd9a5d2b4e2ef2a3a7b9e6c95bf Mon Sep 17 00:00:00 2001
+From 81441b4e4f4e65b722bd4cdb0d967e47244632f1 Mon Sep 17 00:00:00 2001
 From: Stephen Hemminger <stephen at networkplumber.org>
 Date: Tue, 31 Mar 2020 10:14:00 -0700
 Subject: [PATCH] net/netvsc: fix memory free on device close
 
+[ upstream commit 30408aab2d4e0fd9a5d2b4e2ef2a3a7b9e6c95bf ]
+
 The netvsc PMD was putting the mac address in private data but the
 core rte_ethdev doesn't allow that it. It has to be in rte_malloc'd
 memory or a message will be printed on shutdown/close.
  EAL: Invalid memory
 
 Fixes: f8279f47dd89 ("net/netvsc: fix crash in secondary process")
-Cc: stable at dpdk.org
 Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
 ---
  drivers/net/netvsc/hn_ethdev.c | 16 ++++++++++------