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[infiniband] Split subnet management agent client out into ib_smc.c

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Not all Infiniband cards have embedded subnet management agents.
Split out the code that communicates with such an embedded SMA into a
separate ib_smc.c file, and have drivers call ib_smc_update()
explicitly when they suspect that the answers given by the embedded
SMA may have changed.
This commit is contained in:
Michael Brown
2008-11-06 22:31:19 +00:00
parent 830e19eb54
commit 663904a7bc
9 changed files with 805 additions and 520 deletions
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151
src/net/infiniband.c
View File

@@ -333,142 +333,6 @@ void ib_complete_recv ( struct ib_device *ibdev, struct ib_queue_pair *qp,
qp->recv.fill--;
}
/***************************************************************************
*
* Management datagram operations
*
***************************************************************************
*/
/**
* Get port information
*
* @v ibdev Infiniband device
* @v port_info Port information datagram to fill in
* @ret rc Return status code
*/
static int ib_get_port_info ( struct ib_device *ibdev,
struct ib_mad_port_info *port_info ) {
struct ib_mad_hdr *hdr = &port_info->mad_hdr;
int rc;
/* Construct MAD */
memset ( port_info, 0, sizeof ( *port_info ) );
hdr->base_version = IB_MGMT_BASE_VERSION;
hdr->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
hdr->class_version = 1;
hdr->method = IB_MGMT_METHOD_GET;
hdr->attr_id = htons ( IB_SMP_ATTR_PORT_INFO );
hdr->attr_mod = htonl ( ibdev->port );
if ( ( rc = ib_mad ( ibdev, hdr, sizeof ( *port_info ) ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not get port info: %s\n",
ibdev, strerror ( rc ) );
return rc;
}
return 0;
}
/**
* Get GUID information
*
* @v ibdev Infiniband device
* @v guid_info GUID information datagram to fill in
* @ret rc Return status code
*/
static int ib_get_guid_info ( struct ib_device *ibdev,
struct ib_mad_guid_info *guid_info ) {
struct ib_mad_hdr *hdr = &guid_info->mad_hdr;
int rc;
/* Construct MAD */
memset ( guid_info, 0, sizeof ( *guid_info ) );
hdr->base_version = IB_MGMT_BASE_VERSION;
hdr->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
hdr->class_version = 1;
hdr->method = IB_MGMT_METHOD_GET;
hdr->attr_id = htons ( IB_SMP_ATTR_GUID_INFO );
if ( ( rc = ib_mad ( ibdev, hdr, sizeof ( *guid_info ) ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not get GUID info: %s\n",
ibdev, strerror ( rc ) );
return rc;
}
return 0;
}
/**
* Get partition key table
*
* @v ibdev Infiniband device
* @v guid_info Partition key table datagram to fill in
* @ret rc Return status code
*/
static int ib_get_pkey_table ( struct ib_device *ibdev,
struct ib_mad_pkey_table *pkey_table ) {
struct ib_mad_hdr *hdr = &pkey_table->mad_hdr;
int rc;
/* Construct MAD */
memset ( pkey_table, 0, sizeof ( *pkey_table ) );
hdr->base_version = IB_MGMT_BASE_VERSION;
hdr->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
hdr->class_version = 1;
hdr->method = IB_MGMT_METHOD_GET;
hdr->attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE );
if ( ( rc = ib_mad ( ibdev, hdr, sizeof ( *pkey_table ) ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not get pkey table: %s\n",
ibdev, strerror ( rc ) );
return rc;
}
return 0;
}
/**
* Get MAD parameters
*
* @v ibdev Infiniband device
* @ret rc Return status code
*/
static int ib_get_mad_params ( struct ib_device *ibdev ) {
union {
/* This union exists just to save stack space */
struct ib_mad_port_info port_info;
struct ib_mad_guid_info guid_info;
struct ib_mad_pkey_table pkey_table;
} u;
int rc;
/* Port info gives us the link state, the first half of the
* port GID and the SM LID.
*/
if ( ( rc = ib_get_port_info ( ibdev, &u.port_info ) ) != 0 )
return rc;
ibdev->link_up = ( ( u.port_info.port_state__link_speed_supported
& 0xf ) == 4 );
memcpy ( &ibdev->port_gid.u.bytes[0], u.port_info.gid_prefix, 8 );
ibdev->sm_lid = ntohs ( u.port_info.mastersm_lid );
/* GUID info gives us the second half of the port GID */
if ( ( rc = ib_get_guid_info ( ibdev, &u.guid_info ) ) != 0 )
return rc;
memcpy ( &ibdev->port_gid.u.bytes[8], u.guid_info.gid_local, 8 );
/* Get partition key */
if ( ( rc = ib_get_pkey_table ( ibdev, &u.pkey_table ) ) != 0 )
return rc;
ibdev->pkey = ntohs ( u.pkey_table.pkey[0][0] );
DBGC ( ibdev, "IBDEV %p port GID is %08lx:%08lx:%08lx:%08lx\n",
ibdev, htonl ( ibdev->port_gid.u.dwords[0] ),
htonl ( ibdev->port_gid.u.dwords[1] ),
htonl ( ibdev->port_gid.u.dwords[2] ),
htonl ( ibdev->port_gid.u.dwords[3] ) );
return 0;
}
/***************************************************************************
*
* Event queues
@@ -482,14 +346,6 @@ static int ib_get_mad_params ( struct ib_device *ibdev ) {
* @v ibdev Infiniband device
*/
void ib_link_state_changed ( struct ib_device *ibdev ) {
int rc;
/* Update MAD parameters */
if ( ( rc = ib_get_mad_params ( ibdev ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not update MAD parameters: %s\n",
ibdev, strerror ( rc ) );
return;
}
/* Notify IPoIB of link state change */
ipoib_link_state_changed ( ibdev );
@@ -536,6 +392,8 @@ struct ib_device * alloc_ibdev ( size_t priv_size ) {
if ( ibdev ) {
drv_priv = ( ( ( void * ) ibdev ) + sizeof ( *ibdev ) );
ib_set_drvdata ( ibdev, drv_priv );
ibdev->lid = IB_LID_NONE;
ibdev->pkey = IB_PKEY_NONE;
}
return ibdev;
}
@@ -557,10 +415,6 @@ int register_ibdev ( struct ib_device *ibdev ) {
if ( ( rc = ib_open ( ibdev ) ) != 0 )
goto err_open;
/* Get MAD parameters */
if ( ( rc = ib_get_mad_params ( ibdev ) ) != 0 )
goto err_get_mad_params;
/* Add IPoIB device */
if ( ( rc = ipoib_probe ( ibdev ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not add IPoIB device: %s\n",
@@ -573,7 +427,6 @@ int register_ibdev ( struct ib_device *ibdev ) {
return 0;
err_ipoib_probe:
err_get_mad_params:
ib_close ( ibdev );
err_open:
list_del ( &ibdev->list );