[dpdk-stable] patch 'net/failsafe: fix PCI devices init' has been queued to stable release 17.08.1

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 17.08.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/24/17. So please
shout if anyone has objections.

Thanks.

	--yliu

---
>From f3c4dadfb0dd02a54d4734d89bd842094942b07c Mon Sep 17 00:00:00 2001
From: Raslan Darawsheh <rasland at mellanox.com>
Date: Fri, 20 Oct 2017 00:15:00 +0300
Subject: [PATCH] net/failsafe: fix PCI devices init

[ upstream commit b8f4fa4103eaaf082d42ad85f01b1a08e74b89d6 ]

When trying to attach a port as a sub-device, the ethdev port
was compared with devargs.
In the case of a PCI device, the name in devargs is the PCI address.
And since DPDK 17.08, the devargs name of the underlying device was
used to match an ethdev port:
        a1e7c17555e8 ("ethdev: use device name from device structure")

But the recent commit 72e3efb149cc has reverted this wrong matching
to use the ethdev port name as identifier of the port.
It impacts functions like rte_eth_dev_allocated() used in failsafe
for matching ports with given devargs.
The fix is to search for matching devargs in underlying device of
all ethdev ports.
If many ports match the same PCI device, only the first one is matched.

This limitation was already present in previous implementation of
rte_eth_dev_allocated(), and must be adressed later with a better
devargs syntax.

Fixes: 72e3efb149cc ("ethdev: revert use port name from device structure")

Signed-off-by: Raslan Darawsheh <rasland at mellanox.com>
Acked-by: Gaetan Rivet <gaetan.rivet at 6wind.com>
---
 drivers/net/failsafe/failsafe_eal.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/failsafe/failsafe_eal.c b/drivers/net/failsafe/failsafe_eal.c
index aeb87a0..19d26f5 100644
--- a/drivers/net/failsafe/failsafe_eal.c
+++ b/drivers/net/failsafe/failsafe_eal.c
@@ -41,6 +41,7 @@ fs_bus_init(struct rte_eth_dev *dev)
 	struct sub_device *sdev;
 	struct rte_devargs *da;
 	uint8_t i;
+	uint16_t j;
 	int ret;
 
 	FOREACH_SUBDEV(sdev, i, dev) {
@@ -57,7 +58,13 @@ fs_bus_init(struct rte_eth_dev *dev)
 			      rte_errno ? ")" : "");
 			continue;
 		}
-		ETH(sdev) = rte_eth_dev_allocated(da->name);
+		RTE_ETH_FOREACH_DEV(j) {
+			if (strcmp(rte_eth_devices[j].device->name,
+				    da->name) == 0) {
+				ETH(sdev) = &rte_eth_devices[j];
+				break;
+			}
+		}
 		if (ETH(sdev) == NULL) {
 			ERROR("sub_device %d init went wrong", i);
 			return -ENODEV;
-- 
2.7.4