From: longli@linuxonhyperv.com
To: "K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>
Cc: dev@dpdk.org, Long Li <longli@microsoft.com>, stable@dpdk.org
Subject: [dpdk-dev] [PATCH] net/netvsc: return the correct chimney index
Date: Sat, 1 Aug 2020 23:04:28 -0700 [thread overview]
Message-ID: <1596348268-65844-1-git-send-email-longli@linuxonhyperv.com> (raw)
From: Long Li <longli@microsoft.com>
The code should look into "slab" to figure out the index returned from
rte_bitmap_scan().
Fixes: cc02518132 ("net/netvsc: split send buffers from Tx descriptors")
Cc: stable@dpdk.org
Signed-off-by: Long Li <longli@microsoft.com>
---
drivers/net/netvsc/hn_rxtx.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/netvsc/hn_rxtx.c b/drivers/net/netvsc/hn_rxtx.c
index 86a4c0d74..6b32c2ca7 100644
--- a/drivers/net/netvsc/hn_rxtx.c
+++ b/drivers/net/netvsc/hn_rxtx.c
@@ -206,11 +206,13 @@ hn_chim_uninit(struct rte_eth_dev *dev)
static uint32_t hn_chim_alloc(struct hn_data *hv)
{
uint32_t index = NVS_CHIM_IDX_INVALID;
- uint64_t slab;
+ uint64_t slab = 0;
rte_spinlock_lock(&hv->chim_lock);
- if (rte_bitmap_scan(hv->chim_bmap, &index, &slab))
+ if (rte_bitmap_scan(hv->chim_bmap, &index, &slab)) {
+ index += rte_bsf64(slab);
rte_bitmap_clear(hv->chim_bmap, index);
+ }
rte_spinlock_unlock(&hv->chim_lock);
return index;
--
2.25.1
next reply other threads:[~2020-08-02 6:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-02 6:04 longli [this message]
2020-08-02 17:28 ` Stephen Hemminger
2020-08-05 16:10 ` Thomas Monjalon
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