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IB/rdmavt: Clean up distinction between port number and index 

IB core uses 1 relative indexing for ports. All of our data structures
use 0 based indexing. Add an inline function that we can use whenever we
need to validate a legal value and try to convert a port number to a
port index at the entrance into rdmavt.

Try to follow the policy that when we are talking about a port from IB
core point of view we refer to it as a port number. When port is an
index into our arrays refer to it as a port index.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dennis Dalessandro 2016-02-03 14:15:02 -08:00 committed by Doug Ledford
parent d1b697b678
commit f1badc7163
6 changed files with 54 additions and 25 deletions
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8
drivers/infiniband/sw/rdmavt/mad.c
View File

@ -47,12 +47,13 @@
#include <rdma/ib_mad.h>
#include "mad.h"
#include "vt.h"
/**
* rvt_process_mad - process an incoming MAD packet
* @ibdev: the infiniband device this packet came in on
* @mad_flags: MAD flags
* @port: the port number this packet came in on
* @port_num: the port number this packet came in on, 1 based from ib core
* @in_wc: the work completion entry for this packet
* @in_grh: the global route header for this packet
* @in_mad: the incoming MAD
@ -67,7 +68,7 @@
*
* This is called by the ib_mad module.
*/
int rvt_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
int rvt_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
const struct ib_wc *in_wc, const struct ib_grh *in_grh,
const struct ib_mad_hdr *in, size_t in_mad_size,
struct ib_mad_hdr *out, size_t *out_mad_size,
@ -82,6 +83,9 @@ int rvt_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
*VT-DRIVER-API: ????
*
*/
if (ibport_num_to_idx(ibdev, port_num) < 0)
return -EINVAL;
return IB_MAD_RESULT_FAILURE;
}

2
drivers/infiniband/sw/rdmavt/mad.h
View File

@ -50,7 +50,7 @@
#include <rdma/rdma_vt.h>
int rvt_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
int rvt_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
const struct ib_wc *in_wc, const struct ib_grh *in_grh,
const struct ib_mad_hdr *in, size_t in_mad_size,
struct ib_mad_hdr *out, size_t *out_mad_size,

17
drivers/infiniband/sw/rdmavt/qp.c
View File

@ -286,26 +286,31 @@ static inline unsigned mk_qpn(struct rvt_qpn_table *qpt,
return (map - qpt->map) * RVT_BITS_PER_PAGE + off;
}
/*
* Allocate the next available QPN or
* zero/one for QP type IB_QPT_SMI/IB_QPT_GSI.
/**
* alloc_qpn - Allocate the next available qpn or zero/one for QP type
* IB_QPT_SMI/IB_QPT_GSI
*@rdi: rvt device info structure
*@qpt: queue pair number table pointer
*@port_num: IB port number, 1 based, comes from core
*
* Return: The queue pair number
*/
static int alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
enum ib_qp_type type, u8 port, gfp_t gfp)
enum ib_qp_type type, u8 port_num, gfp_t gfp)
{
u32 i, offset, max_scan, qpn;
struct rvt_qpn_map *map;
u32 ret;
if (rdi->driver_f.alloc_qpn)
return rdi->driver_f.alloc_qpn(rdi, qpt, type, port,
return rdi->driver_f.alloc_qpn(rdi, qpt, type, port_num,
GFP_KERNEL);
if (type == IB_QPT_SMI || type == IB_QPT_GSI) {
unsigned n;
ret = type == IB_QPT_GSI;
n = 1 << (ret + 2 * (port - 1));
n = 1 << (ret + 2 * (port_num - 1));
spin_lock(&qpt->lock);
if (qpt->flags & n)
ret = -EINVAL;

36
drivers/infiniband/sw/rdmavt/vt.c
View File

@ -120,14 +120,17 @@ static int rvt_modify_device(struct ib_device *device,
/**
* rvt_query_port: Passes the query port call to the driver
* @ibdev: Verbs IB dev
* @port: port number
* @port_num: port number, 1 based from ib core
* @props: structure to hold returned properties
*
* Returns 0 on success
*/
static int rvt_query_port(struct ib_device *ibdev, u8 port,
static int rvt_query_port(struct ib_device *ibdev, u8 port_num,
struct ib_port_attr *props)
{
if (ibport_num_to_idx(ibdev, port_num) < 0)
return -EINVAL;
/*
* VT-DRIVER-API: query_port_state()
* driver returns pretty much everything in ib_port_attr
@ -138,13 +141,13 @@ static int rvt_query_port(struct ib_device *ibdev, u8 port,
/**
* rvt_modify_port
* @ibdev: Verbs IB dev
* @port: Port number
* @port_num: Port number, 1 based from ib core
* @port_modify_mask: How to change the port
* @props: Structure to fill in
*
* Returns 0 on success
*/
static int rvt_modify_port(struct ib_device *ibdev, u8 port,
static int rvt_modify_port(struct ib_device *ibdev, u8 port_num,
int port_modify_mask, struct ib_port_modify *props)
{
/*
@ -160,18 +163,21 @@ static int rvt_modify_port(struct ib_device *ibdev, u8 port,
* TBD: send_trap() and post_mad_send() need examined to see where they
* fit in.
*/
if (ibport_num_to_idx(ibdev, port_num) < 0)
return -EINVAL;
return -EOPNOTSUPP;
}
/**
* rvt_query_pkey - Return a pkey from the table at a given index
* @ibdev: Verbs IB dev
* @port: Port number
* @port_num: Port number, 1 based from ib core
* @intex: Index into pkey table
*
* Returns 0 on failure pkey otherwise
*/
static int rvt_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
static int rvt_query_pkey(struct ib_device *ibdev, u8 port_num, u16 index,
u16 *pkey)
{
/*
@ -183,11 +189,11 @@ static int rvt_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
int port_index;
if (index >= rvt_get_npkeys(rdi))
port_index = ibport_num_to_idx(ibdev, port_num);
if (port_index < 0)
return -EINVAL;
port_index = port - 1; /* IB ports start at 1 our array at 0 */
if ((port_index < 0) || (port_index >= rdi->dparms.nports))
if (index >= rvt_get_npkeys(rdi))
return -EINVAL;
*pkey = rvt_get_pkey(rdi, port_index, index);
@ -197,13 +203,13 @@ static int rvt_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
/**
* rvt_query_gid - Return a gid from the table
* @ibdev: Verbs IB dev
* @port: Port number
* @port_num: Port number, 1 based from ib core
* @index: = Index in table
* @gid: Gid to return
*
* Returns 0 on success
*/
static int rvt_query_gid(struct ib_device *ibdev, u8 port,
static int rvt_query_gid(struct ib_device *ibdev, u8 port_num,
int index, union ib_gid *gid)
{
/*
@ -211,6 +217,8 @@ static int rvt_query_gid(struct ib_device *ibdev, u8 port,
* to craft the return value. This will work similar to how query_pkey()
* is being done.
*/
if (ibport_num_to_idx(ibdev, port_num) < 0)
return -EINVAL;
return -EOPNOTSUPP;
}
@ -455,11 +463,11 @@ EXPORT_SYMBOL(rvt_unregister_device);
* They persist until the driver goes away.
*/
int rvt_init_port(struct rvt_dev_info *rdi, struct rvt_ibport *port,
int portnum, u16 *pkey_table)
int port_index, u16 *pkey_table)
{
rdi->ports[portnum] = port;
rdi->ports[portnum]->pkey_table = pkey_table;
rdi->ports[port_index] = port;
rdi->ports[port_index]->pkey_table = pkey_table;
return 0;
}

12
drivers/infiniband/sw/rdmavt/vt.h
View File

@ -88,4 +88,16 @@
#define __rvt_pr_err(pdev, name, fmt, ...) \
dev_err(&pdev->dev, "%s: " fmt, name, ##__VA_ARGS__)
static inline int ibport_num_to_idx(struct ib_device *ibdev, u8 port_num)
{
struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
int port_index;
port_index = port_num - 1; /* IB ports start at 1 our arrays at 0 */
if ((port_index < 0) || (port_index >= rdi->dparms.nports))
return -EINVAL;
return port_index;
}
#endif /* DEF_RDMAVT_H */

4
include/rdma/rdma_vt.h
View File

@ -256,7 +256,7 @@ struct rvt_driver_provided {
void (*notify_new_ah)(struct ib_device *, struct ib_ah_attr *,
struct rvt_ah *);
int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
enum ib_qp_type type, u8 port, gfp_t gfp);
enum ib_qp_type type, u8 port_num, gfp_t gfp);
/**
* Return 0 if modification is valid, -errno otherwise
*/
@ -408,7 +408,7 @@ int rvt_register_device(struct rvt_dev_info *rvd);
void rvt_unregister_device(struct rvt_dev_info *rvd);
int rvt_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr);
int rvt_init_port(struct rvt_dev_info *rdi, struct rvt_ibport *port,
int portnum, u16 *pkey_table);
int port_index, u16 *pkey_table);
int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge,
u32 len, u64 vaddr, u32 rkey, int acc);
int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd,