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IB/core: Introduce capabilitymask2 field in ClassPortInfo mad

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Change struct ib_class_port_info to conform to IB Spec 1.3
That in order to get specific capability mask from ClassPortInfo mad.

>From the IB Spec, ClassPortInfo section:
        "CapabilityMask2 Bits 0-26: Additional class-specific capabilities...
         RespTimeValue the rest 5 bits"

The new struct now has one field for capabilitymask2 (previously was the
reserved field) and the resp_time field.

And it fixes up qib and srpt, use of the field repurposed to be used as
capabilitymask2:
IB/qib: Change pma_get_classportinfo
IB/srpt: Adjust the use of ib_class_port_info

Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Hal Rosenstock <hal@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Erez Shitrit 2016-05-25 22:02:04 +03:00 committed by Doug Ledford
parent c16d2750a0
commit 507f6afa3a
3 changed files with 63 additions and 5 deletions
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6
drivers/infiniband/hw/qib/qib_mad.c
View File

@ -1172,11 +1172,13 @@ static int pma_get_classportinfo(struct ib_pma_mad *pmp,
* Set the most significant bit of CM2 to indicate support for
* congestion statistics
*/
p->reserved[0] = dd->psxmitwait_supported << 7;
ib_set_cpi_capmask2(p,
dd->psxmitwait_supported <<
(31 - IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE));
/*
* Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
*/
p->resp_time_value = 18;
ib_set_cpi_resp_time(p, 18);
return reply((struct ib_smp *) pmp);
}

2
drivers/infiniband/ulp/srpt/ib_srpt.c
View File

@ -254,8 +254,8 @@ static void srpt_get_class_port_info(struct ib_dm_mad *mad)
memset(cif, 0, sizeof(*cif));
cif->base_version = 1;
cif->class_version = 1;
cif->resp_time_value = 20;
ib_set_cpi_resp_time(cif, 20);
mad->mad_hdr.status = 0;
}

60
include/rdma/ib_mad.h
View File

@ -239,12 +239,15 @@ struct ib_vendor_mad {
#define IB_MGMT_CLASSPORTINFO_ATTR_ID cpu_to_be16(0x0001)
#define IB_CLASS_PORT_INFO_RESP_TIME_MASK 0x1F
#define IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE 5
struct ib_class_port_info {
u8 base_version;
u8 class_version;
__be16 capability_mask;
u8 reserved[3];
u8 resp_time_value;
/* 27 bits for cap_mask2, 5 bits for resp_time */
__be32 cap_mask2_resp_time;
u8 redirect_gid[16];
__be32 redirect_tcslfl;
__be16 redirect_lid;
@ -259,6 +262,59 @@ struct ib_class_port_info {
__be32 trap_qkey;
};
/**
* ib_get_cpi_resp_time - Returns the resp_time value from
* cap_mask2_resp_time in ib_class_port_info.
* @cpi: A struct ib_class_port_info mad.
*/
static inline u8 ib_get_cpi_resp_time(struct ib_class_port_info *cpi)
{
return (u8)(be32_to_cpu(cpi->cap_mask2_resp_time) &
IB_CLASS_PORT_INFO_RESP_TIME_MASK);
}
/**
* ib_set_cpi_resptime - Sets the response time in an
* ib_class_port_info mad.
* @cpi: A struct ib_class_port_info.
* @rtime: The response time to set.
*/
static inline void ib_set_cpi_resp_time(struct ib_class_port_info *cpi,
u8 rtime)
{
cpi->cap_mask2_resp_time =
(cpi->cap_mask2_resp_time &
cpu_to_be32(~IB_CLASS_PORT_INFO_RESP_TIME_MASK)) |
cpu_to_be32(rtime & IB_CLASS_PORT_INFO_RESP_TIME_MASK);
}
/**
* ib_get_cpi_capmask2 - Returns the capmask2 value from
* cap_mask2_resp_time in ib_class_port_info.
* @cpi: A struct ib_class_port_info mad.
*/
static inline u32 ib_get_cpi_capmask2(struct ib_class_port_info *cpi)
{
return (be32_to_cpu(cpi->cap_mask2_resp_time) >>
IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE);
}
/**
* ib_set_cpi_capmask2 - Sets the capmask2 in an
* ib_class_port_info mad.
* @cpi: A struct ib_class_port_info.
* @capmask2: The capmask2 to set.
*/
static inline void ib_set_cpi_capmask2(struct ib_class_port_info *cpi,
u32 capmask2)
{
cpi->cap_mask2_resp_time =
(cpi->cap_mask2_resp_time &
cpu_to_be32(IB_CLASS_PORT_INFO_RESP_TIME_MASK)) |
cpu_to_be32(capmask2 <<
IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE);
}
struct ib_mad_notice_attr {
u8 generic_type;
u8 prod_type_msb;