[PATCH rdma-next v3 3/3] RDMA/mana_ib: Modify QP state

Konstantin Taranov
2024-05-22T08:24:08Z

Implement modify QP state for RC QPs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
---
drivers/infiniband/hw/mana/mana_ib.h | 37 ++++++++++++++
drivers/infiniband/hw/mana/qp.c | 72 +++++++++++++++++++++++++++-
2 files changed, 107 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 5cccbe397..d29dee7b5 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -140,6 +140,7 @@ enum mana_ib_command_code {
MANA_IB_DESTROY_CQ = 0x30009,
MANA_IB_CREATE_RC_QP = 0x3000a,
MANA_IB_DESTROY_RC_QP = 0x3000b,
+ MANA_IB_SET_QP_STATE = 0x3000d,
};

struct mana_ib_query_adapter_caps_req {
@@ -286,6 +287,42 @@ struct mana_rnic_destroy_rc_qp_resp {
struct gdma_resp_hdr hdr;
}; /* HW Data */

+struct mana_ib_ah_attr {
+ u8 src_addr[16];
+ u8 dest_addr[16];
+ u8 src_mac[ETH_ALEN];
+ u8 dest_mac[ETH_ALEN];
+ u8 src_addr_type;
+ u8 dest_addr_type;
+ u8 hop_limit;
+ u8 traffic_class;
+ u16 src_port;
+ u16 dest_port;
+ u32 reserved;
+};
+
+struct mana_rnic_set_qp_state_req {
+ struct gdma_req_hdr hdr;
+ mana_handle_t adapter;
+ mana_handle_t qp_handle;
+ u64 attr_mask;
+ u32 qp_state;
+ u32 path_mtu;
+ u32 rq_psn;
+ u32 sq_psn;
+ u32 dest_qpn;
+ u32 max_dest_rd_atomic;
+ u32 retry_cnt;
+ u32 rnr_retry;
+ u32 min_rnr_timer;
+ u32 reserved;
+ struct mana_ib_ah_attr ah_attr;
+}; /* HW Data */
+
+struct mana_rnic_set_qp_state_resp {
+ struct gdma_resp_hdr hdr;
+}; /* HW Data */
+
static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev *mdev)
{
return mdev->gdma_dev->gdma_context;
diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c
index 7dbeba41b..34a93729d 100644
--- a/drivers/infiniband/hw/mana/qp.c
+++ b/drivers/infiniband/hw/mana/qp.c
@@ -491,11 +491,79 @@ int mana_ib_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attr,
return -EINVAL;
}

+static int mana_ib_gd_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata)
+{
+ struct mana_ib_dev *mdev = container_of(ibqp->device, struct mana_ib_dev, ib_dev);
+ struct mana_ib_qp *qp = container_of(ibqp, struct mana_ib_qp, ibqp);
+ struct mana_rnic_set_qp_state_resp resp = {};
+ struct mana_rnic_set_qp_state_req req = {};
+ struct gdma_context *gc = mdev_to_gc(mdev);
+ struct mana_port_context *mpc;
+ struct net_device *ndev;
+ int err;
+
+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_SET_QP_STATE, sizeof(req), sizeof(resp));
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+ req.adapter = mdev->adapter_handle;
+ req.qp_handle = qp->qp_handle;
+ req.qp_state = attr->qp_state;
+ req.attr_mask = attr_mask;
+ req.path_mtu = attr->path_mtu;
+ req.rq_psn = attr->rq_psn;
+ req.sq_psn = attr->sq_psn;
+ req.dest_qpn = attr->dest_qp_num;
+ req.max_dest_rd_atomic = attr->max_dest_rd_atomic;
+ req.retry_cnt = attr->retry_cnt;
+ req.rnr_retry = attr->rnr_retry;
+ req.min_rnr_timer = attr->min_rnr_timer;
+ if (attr_mask & IB_QP_AV) {
+ ndev = mana_ib_get_netdev(&mdev->ib_dev, ibqp->port);
+ if (!ndev) {
+ ibdev_dbg(&mdev->ib_dev, "Invalid port %u in QP %u\n",
+ ibqp->port, ibqp->qp_num);
+ return -EINVAL;
+ }
+ mpc = netdev_priv(ndev);
+ copy_in_reverse(req.ah_attr.src_mac, mpc->mac_addr, ETH_ALEN);
+ copy_in_reverse(req.ah_attr.dest_mac, attr->ah_attr.roce.dmac, ETH_ALEN);
+ copy_in_reverse(req.ah_attr.src_addr, attr->ah_attr.grh.sgid_attr->gid.raw,
+ sizeof(union ib_gid));
+ copy_in_reverse(req.ah_attr.dest_addr, attr->ah_attr.grh.dgid.raw,
+ sizeof(union ib_gid));
+ if (rdma_gid_attr_network_type(attr->ah_attr.grh.sgid_attr) == RDMA_NETWORK_IPV4) {
+ req.ah_attr.src_addr_type = SGID_TYPE_IPV4;
+ req.ah_attr.dest_addr_type = SGID_TYPE_IPV4;
+ } else {
+ req.ah_attr.src_addr_type = SGID_TYPE_IPV6;
+ req.ah_attr.dest_addr_type = SGID_TYPE_IPV6;
+ }
+ req.ah_attr.dest_port = ROCE_V2_UDP_DPORT;
+ req.ah_attr.src_port = rdma_get_udp_sport(attr->ah_attr.grh.flow_label,
+ ibqp->qp_num, attr->dest_qp_num);
+ req.ah_attr.traffic_class = attr->ah_attr.grh.traffic_class;
+ req.ah_attr.hop_limit = attr->ah_attr.grh.hop_limit;
+ }
+
+ err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+ if (err) {
+ ibdev_err(&mdev->ib_dev, "Failed modify qp err %d", err);
+ return err;
+ }
+
+ return 0;
+}
+
int mana_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask, struct ib_udata *udata)
{
- /* modify_qp is not supported by this version of the driver */
- return -EOPNOTSUPP;
+ switch (ibqp->qp_type) {
+ case IB_QPT_RC:
+ return mana_ib_gd_modify_qp(ibqp, attr, attr_mask, udata);
+ default:
+ ibdev_dbg(ibqp->device, "Modify QP type %u not supported", ibqp->qp_type);
+ return -EOPNOTSUPP;
+ }
}

static int mana_ib_destroy_qp_rss(struct mana_ib_qp *qp,
--
2.43.0