mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-15 15:15:47 +00:00
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>
78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2014 Intel Corporation. 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef __OPA_SMI_H_
|
|
#define __OPA_SMI_H_
|
|
|
|
#include <rdma/ib_smi.h>
|
|
#include <rdma/opa_smi.h>
|
|
|
|
#include "smi.h"
|
|
|
|
enum smi_action opa_smi_handle_dr_smp_recv(struct opa_smp *smp, bool is_switch,
|
|
u32 port_num, int phys_port_cnt);
|
|
int opa_smi_get_fwd_port(struct opa_smp *smp);
|
|
extern enum smi_forward_action opa_smi_check_forward_dr_smp(struct opa_smp *smp);
|
|
extern enum smi_action opa_smi_handle_dr_smp_send(struct opa_smp *smp,
|
|
bool is_switch, u32 port_num);
|
|
|
|
/*
|
|
* Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
|
|
* via process_mad
|
|
*/
|
|
static inline enum smi_action opa_smi_check_local_smp(struct opa_smp *smp,
|
|
struct ib_device *device)
|
|
{
|
|
/* C14-9:3 -- We're at the end of the DR segment of path */
|
|
/* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */
|
|
return (device->ops.process_mad &&
|
|
!opa_get_smp_direction(smp) &&
|
|
(smp->hop_ptr == smp->hop_cnt + 1)) ?
|
|
IB_SMI_HANDLE : IB_SMI_DISCARD;
|
|
}
|
|
|
|
/*
|
|
* Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
|
|
* via process_mad
|
|
*/
|
|
static inline enum smi_action opa_smi_check_local_returning_smp(struct opa_smp *smp,
|
|
struct ib_device *device)
|
|
{
|
|
/* C14-13:3 -- We're at the end of the DR segment of path */
|
|
/* C14-13:4 -- Hop Pointer == 0 -> give to SM */
|
|
return (device->ops.process_mad &&
|
|
opa_get_smp_direction(smp) &&
|
|
!smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD;
|
|
}
|
|
|
|
#endif /* __OPA_SMI_H_ */
|