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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /drivers/infiniband/sw/rxe/rxe_av.c
parentInitial commit. (diff)
downloadlinux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz
linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/infiniband/sw/rxe/rxe_av.c')
-rw-r--r--drivers/infiniband/sw/rxe/rxe_av.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_av.c b/drivers/infiniband/sw/rxe/rxe_av.c
new file mode 100644
index 000000000..26fe8d7db
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_av.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
+ *
+ * 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 "rxe.h"
+#include "rxe_loc.h"
+
+int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr)
+{
+ struct rxe_port *port;
+
+ port = &rxe->port;
+
+ if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) {
+ u8 sgid_index = rdma_ah_read_grh(attr)->sgid_index;
+
+ if (sgid_index > port->attr.gid_tbl_len) {
+ pr_warn("invalid sgid index = %d\n", sgid_index);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
+ struct rdma_ah_attr *attr)
+{
+ const struct ib_global_route *grh = rdma_ah_read_grh(attr);
+
+ memset(av, 0, sizeof(*av));
+ memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw));
+ av->grh.flow_label = grh->flow_label;
+ av->grh.sgid_index = grh->sgid_index;
+ av->grh.hop_limit = grh->hop_limit;
+ av->grh.traffic_class = grh->traffic_class;
+ av->port_num = port_num;
+}
+
+void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr)
+{
+ struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
+
+ attr->type = RDMA_AH_ATTR_TYPE_ROCE;
+
+ memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw));
+ grh->flow_label = av->grh.flow_label;
+ grh->sgid_index = av->grh.sgid_index;
+ grh->hop_limit = av->grh.hop_limit;
+ grh->traffic_class = av->grh.traffic_class;
+
+ rdma_ah_set_ah_flags(attr, IB_AH_GRH);
+ rdma_ah_set_port_num(attr, av->port_num);
+}
+
+void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr)
+{
+ const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr;
+
+ rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
+ rdma_gid2ip((struct sockaddr *)&av->dgid_addr,
+ &rdma_ah_read_grh(attr)->dgid);
+ av->network_type = rdma_gid_attr_network_type(sgid_attr);
+}
+
+struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt)
+{
+ if (!pkt || !pkt->qp)
+ return NULL;
+
+ if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC)
+ return &pkt->qp->pri_av;
+
+ return (pkt->wqe) ? &pkt->wqe->av : NULL;
+}