Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 106 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c
new file mode 100644
index 000000000..174b19e39
--- /dev/null
+++ b/drivers/infiniband/hw/hns/hns_roce_ah.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2016 Hisilicon Limited.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/pci.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_cache.h>
+#include "hns_roce_device.h"
+
+static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
+{
+	u32 fl = ah_attr->grh.flow_label;
+	u16 sport;
+
+	if (!fl)
+		sport = get_random_u32() %
+			(IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 -
+			 IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
+			IB_ROCE_UDP_ENCAP_VALID_PORT_MIN;
+	else
+		sport = rdma_flow_label_to_udp_sport(fl);
+
+	return sport;
+}
+
+int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
+		       struct ib_udata *udata)
+{
+	struct rdma_ah_attr *ah_attr = init_attr->ah_attr;
+	const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
+	struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device);
+	struct hns_roce_ah *ah = to_hr_ah(ibah);
+	int ret = 0;
+
+	ah->av.port = rdma_ah_get_port_num(ah_attr);
+	ah->av.gid_index = grh->sgid_index;
+
+	if (rdma_ah_get_static_rate(ah_attr))
+		ah->av.stat_rate = IB_RATE_10_GBPS;
+
+	ah->av.hop_limit = grh->hop_limit;
+	ah->av.flowlabel = grh->flow_label;
+	ah->av.udp_sport = get_ah_udp_sport(ah_attr);
+	ah->av.sl = rdma_ah_get_sl(ah_attr);
+	ah->av.tclass = get_tclass(grh);
+
+	memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
+	memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
+
+	/* HIP08 needs to record vlan info in Address Vector */
+	if (hr_dev->pci_dev->revision <= PCI_REVISION_ID_HIP08) {
+		ret = rdma_read_gid_l2_fields(ah_attr->grh.sgid_attr,
+					      &ah->av.vlan_id, NULL);
+		if (ret)
+			return ret;
+
+		ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID;
+	}
+
+	return ret;
+}
+
+int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
+{
+	struct hns_roce_ah *ah = to_hr_ah(ibah);
+
+	memset(ah_attr, 0, sizeof(*ah_attr));
+
+	rdma_ah_set_sl(ah_attr, ah->av.sl);
+	rdma_ah_set_port_num(ah_attr, ah->av.port);
+	rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate);
+	rdma_ah_set_grh(ah_attr, NULL, ah->av.flowlabel,
+			ah->av.gid_index, ah->av.hop_limit, ah->av.tclass);
+	rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid);
+
+	return 0;
+}