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| author | Wei Hu (Xavier) <xavier.huwei@huawei.com> | 2016-11-23 19:41:07 +0000 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-12-03 14:20:42 -0500 |
| commit | 5e6ff78a229c2f231f2f743b017987621e469858 (patch) | |
| tree | fbb406e838608a9847c2ef56d8a36b56460eca17 /drivers/infiniband/hw/hns/hns_roce_alloc.c | |
| parent | dd783a212c023b309e91ab9752c07e22f759461e (diff) | |
| download | linux-5e6ff78a229c2f231f2f743b017987621e469858.tar.bz2 | |
IB/hns: Change qpn allocation to round-robin mode.
When using CM to establish connections, qp number that was freed
just now will be rejected by ib core. To fix these problem, We
change qpn allocation to round-robin mode. We added the round-robin
mode for allocating resources using bitmap. We use round-robin mode
for qp number and non round-robing mode for other resources like
cq number, pd number etc.
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_alloc.c')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_alloc.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_alloc.c b/drivers/infiniband/hw/hns/hns_roce_alloc.c index 863a17a2de40..605962f2828c 100644 --- a/drivers/infiniband/hw/hns/hns_roce_alloc.c +++ b/drivers/infiniband/hw/hns/hns_roce_alloc.c @@ -61,9 +61,10 @@ int hns_roce_bitmap_alloc(struct hns_roce_bitmap *bitmap, unsigned long *obj) return ret; } -void hns_roce_bitmap_free(struct hns_roce_bitmap *bitmap, unsigned long obj) +void hns_roce_bitmap_free(struct hns_roce_bitmap *bitmap, unsigned long obj, + int rr) { - hns_roce_bitmap_free_range(bitmap, obj, 1); + hns_roce_bitmap_free_range(bitmap, obj, 1, rr); } int hns_roce_bitmap_alloc_range(struct hns_roce_bitmap *bitmap, int cnt, @@ -106,7 +107,8 @@ int hns_roce_bitmap_alloc_range(struct hns_roce_bitmap *bitmap, int cnt, } void hns_roce_bitmap_free_range(struct hns_roce_bitmap *bitmap, - unsigned long obj, int cnt) + unsigned long obj, int cnt, + int rr) { int i; @@ -116,7 +118,8 @@ void hns_roce_bitmap_free_range(struct hns_roce_bitmap *bitmap, for (i = 0; i < cnt; i++) clear_bit(obj + i, bitmap->table); - bitmap->last = min(bitmap->last, obj); + if (!rr) + bitmap->last = min(bitmap->last, obj); bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top) & bitmap->mask; spin_unlock(&bitmap->lock); |