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1fb7f8973f
Current code uses many different types when dealing with a port of a RDMA device: u8, unsigned int and u32. Switch to u32 to clean up the logic. This allows us to make (at least) the core view consistent and use the same type. Unfortunately not all places can be converted. Many uverbs functions expect port to be u8 so keep those places in order not to break UAPIs. HW/Spec defined values must also not be changed. With the switch to u32 we now can support devices with more than 255 ports. U32_MAX is reserved to make control logic a bit easier to deal with. As a device with U32_MAX ports probably isn't going to happen any time soon this seems like a non issue. When a device with more than 255 ports is created uverbs will report the RDMA device as having 255 ports as this is the max currently supported. The verbs interface is not changed yet because the IBTA spec limits the port size in too many places to be u8 and all applications that relies in verbs won't be able to cope with this change. At this stage, we are extending the interfaces that are using vendor channel solely Once the limitation is lifted mlx5 in switchdev mode will be able to have thousands of SFs created by the device. As the only instance of an RDMA device that reports more than 255 ports will be a representor device and it exposes itself as a RAW Ethernet only device CM/MAD/IPoIB and other ULPs aren't effected by this change and their sysfs/interfaces that are exposes to userspace can remain unchanged. While here cleanup some alignment issues and remove unneeded sanity checks (mainly in rdmavt), Link: https://lore.kernel.org/r/20210301070420.439400-1-leon@kernel.org Signed-off-by: Mark Bloch <mbloch@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright (c) 2019 Mellanox Technologies. All rights reserved.
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*/
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#ifndef _RDMA_COUNTER_H_
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#define _RDMA_COUNTER_H_
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#include <linux/mutex.h>
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#include <linux/pid_namespace.h>
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#include <rdma/restrack.h>
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#include <rdma/rdma_netlink.h>
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struct ib_device;
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struct ib_qp;
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struct auto_mode_param {
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int qp_type;
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};
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struct rdma_counter_mode {
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enum rdma_nl_counter_mode mode;
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enum rdma_nl_counter_mask mask;
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struct auto_mode_param param;
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};
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struct rdma_port_counter {
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struct rdma_counter_mode mode;
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struct rdma_hw_stats *hstats;
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unsigned int num_counters;
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struct mutex lock;
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};
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struct rdma_counter {
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struct rdma_restrack_entry res;
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struct ib_device *device;
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uint32_t id;
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struct kref kref;
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struct rdma_counter_mode mode;
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struct mutex lock;
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struct rdma_hw_stats *stats;
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u32 port;
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};
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void rdma_counter_init(struct ib_device *dev);
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void rdma_counter_release(struct ib_device *dev);
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int rdma_counter_set_auto_mode(struct ib_device *dev, u32 port,
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enum rdma_nl_counter_mask mask,
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struct netlink_ext_ack *extack);
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int rdma_counter_bind_qp_auto(struct ib_qp *qp, u32 port);
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int rdma_counter_unbind_qp(struct ib_qp *qp, bool force);
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int rdma_counter_query_stats(struct rdma_counter *counter);
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u64 rdma_counter_get_hwstat_value(struct ib_device *dev, u32 port, u32 index);
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int rdma_counter_bind_qpn(struct ib_device *dev, u32 port,
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u32 qp_num, u32 counter_id);
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int rdma_counter_bind_qpn_alloc(struct ib_device *dev, u32 port,
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u32 qp_num, u32 *counter_id);
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int rdma_counter_unbind_qpn(struct ib_device *dev, u32 port,
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u32 qp_num, u32 counter_id);
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int rdma_counter_get_mode(struct ib_device *dev, u32 port,
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enum rdma_nl_counter_mode *mode,
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enum rdma_nl_counter_mask *mask);
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#endif /* _RDMA_COUNTER_H_ */
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