d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net/netvsc: fix chimney index

Browse Source 
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>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Long Li 2020-08-01 23:04:28 -07:00 committed by Thomas Monjalon
parent eb8939538f
commit 3eee636809
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/netvsc/hn_rxtx.c
View File

@ -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;