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Obtains a response to the get path record!

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This commit is contained in:
Michael Brown
2007-09-17 08:36:56 +01:00
parent e05a8cd4de
commit b3d3814c17
5 changed files with 276 additions and 17 deletions
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181
src/drivers/net/ipoib.c
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@@ -44,15 +44,24 @@ extern struct ib_address_vector hack_ipoib_bcast_av;
/** IPoIB MTU */
#define IPOIB_MTU 2048
/** Number of IPoIB send work queue entries */
/** Number of IPoIB data send work queue entries */
#define IPOIB_DATA_NUM_SEND_WQES 4
/** Number of IPoIB receive work queue entries */
#define IPOIB_DATA_NUM_RECV_WQES 8
/** Number of IPoIB data receive work queue entries */
#define IPOIB_DATA_NUM_RECV_WQES 4
/** Number of IPoIB completion entries */
/** Number of IPoIB data completion entries */
#define IPOIB_DATA_NUM_CQES 8
/** Number of IPoIB metadata send work queue entries */
#define IPOIB_META_NUM_SEND_WQES 4
/** Number of IPoIB metadata receive work queue entries */
#define IPOIB_META_NUM_RECV_WQES 4
/** Number of IPoIB metadata completion entries */
#define IPOIB_META_NUM_CQES 8
/** An IPoIB queue set */
struct ipoib_queue_set {
/** Completion queue */
@@ -84,10 +93,15 @@ struct ipoib_device {
****************************************************************************
*/
/** Broadcast QPN used in IPoIB MAC addresses
*
* This is a guaranteed invalid real QPN
*/
#define IPOIB_BROADCAST_QPN 0xffffffffUL
/** Broadcast IPoIB address */
static struct ipoib_mac ipoib_broadcast = {
.gid = { { 0xff, 0x12, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff } },
.qpn = ntohl ( IPOIB_BROADCAST_QPN ),
};
/**
@@ -244,6 +258,73 @@ static int ipoib_create_qset ( struct ipoib_device *ipoib,
return rc;
}
/**
* Transmit path record request
*
* @v ipoib IPoIB device
* @v gid Destination GID
* @ret rc Return status code
*/
static int ipoib_get_path_record ( struct ipoib_device *ipoib,
struct ib_gid *gid ) {
struct ib_device *ibdev = ipoib->ibdev;
struct io_buffer *iobuf;
struct ib_mad_path_record *path_record;
struct ib_address_vector av;
static uint32_t tid = 0;
int rc;
DBG ( "get_path_record():\n" );
int get_path_record(struct ib_gid *dgid, uint16_t *dlid_p,
uint8_t *sl_p, uint8_t *rate_p);
uint16_t tmp_dlid;
uint8_t tmp_sl;
uint8_t tmp_rate;
get_path_record ( gid, &tmp_dlid, &tmp_sl, &tmp_rate );
DBG ( "ipoib_get_path_record():\n" );
/* Allocate I/O buffer */
iobuf = alloc_iob ( sizeof ( *path_record ) );
if ( ! iobuf )
return -ENOMEM;
iob_put ( iobuf, sizeof ( *path_record ) );
path_record = iobuf->data;
memset ( path_record, 0, sizeof ( *path_record ) );
/* Construct path record request */
path_record->mad_hdr.base_version = IB_MGMT_BASE_VERSION;
path_record->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM;
path_record->mad_hdr.class_version = 2;
path_record->mad_hdr.method = IB_MGMT_METHOD_GET;
path_record->mad_hdr.attr_id = htons ( IB_SA_ATTR_PATH_REC );
path_record->mad_hdr.tid = tid++;
path_record->sa_hdr.comp_mask[1] =
htonl ( IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID );
memcpy ( &path_record->dgid, gid, sizeof ( path_record->dgid ) );
memcpy ( &path_record->sgid, &ibdev->port_gid,
sizeof ( path_record->sgid ) );
DBG_HD ( path_record, sizeof ( *path_record ) );
/* Construct address vector */
memset ( &av, 0, sizeof ( av ) );
av.dlid = ibdev->sm_lid;
av.dest_qp = IB_SA_QPN;
av.qkey = IB_SA_QKEY;
/* Post send request */
if ( ( rc = ib_post_send ( ibdev, ipoib->meta.qp, &av,
iobuf ) ) != 0 ) {
DBGC ( ipoib, "IPoIB %p could not send get path record: %s\n",
ipoib, strerror ( rc ) );
free_iob ( iobuf );
return rc;
}
return 0;
}
/**
* Transmit packet via IPoIB network device
*
@@ -256,19 +337,29 @@ static int ipoib_transmit ( struct net_device *netdev,
struct ipoib_device *ipoib = netdev->priv;
struct ib_device *ibdev = ipoib->ibdev;
struct ipoib_pseudo_hdr *ipoib_pshdr = iobuf->data;
int rc;
if ( iob_len ( iobuf ) < sizeof ( *ipoib_pshdr ) ) {
DBGC ( ipoib, "IPoIB %p buffer too short\n", ipoib );
return -EINVAL;
}
DBG ( "TX pseudo-header:\n" );
DBG_HD ( ipoib_pshdr, sizeof ( *ipoib_pshdr ) );
if ( ipoib_pshdr->peer.qpn != htonl ( IPOIB_BROADCAST_QPN ) ) {
DBG ( "Get path record\n" );
rc = ipoib_get_path_record ( ipoib, &ipoib_pshdr->peer.gid );
free_iob ( iobuf );
return 0;
}
iob_pull ( iobuf, ( sizeof ( *ipoib_pshdr ) ) );
return ib_post_send ( ibdev, ipoib->data.qp,
&hack_ipoib_bcast_av, iobuf );
}
/**
* Handle IPoIB send completion
* Handle IPoIB data send completion
*
* @v ibdev Infiniband device
* @v qp Queue pair
@@ -286,7 +377,7 @@ static void ipoib_data_complete_send ( struct ib_device *ibdev __unused,
}
/**
* Handle IPoIB receive completion
* Handle IPoIB data receive completion
*
* @v ibdev Infiniband device
* @v qp Queue pair
@@ -315,6 +406,61 @@ static void ipoib_data_complete_recv ( struct ib_device *ibdev __unused,
ipoib->data.recv_fill--;
}
/**
* Handle IPoIB metadata send completion
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v completion Completion
* @v iobuf I/O buffer
*/
static void ipoib_meta_complete_send ( struct ib_device *ibdev __unused,
struct ib_queue_pair *qp,
struct ib_completion *completion,
struct io_buffer *iobuf ) {
struct net_device *netdev = qp->owner_priv;
struct ipoib_device *ipoib = netdev->priv;
DBG ( "Woohoo! METADATA TX completion\n" );
if ( completion->syndrome ) {
DBGC ( ipoib, "IPoIB %p metadata TX completion error %x\n",
ipoib, completion->syndrome );
}
free_iob ( iobuf );
}
/**
* Handle IPoIB metadata receive completion
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v completion Completion
* @v iobuf I/O buffer
*/
static void ipoib_meta_complete_recv ( struct ib_device *ibdev __unused,
struct ib_queue_pair *qp,
struct ib_completion *completion,
struct io_buffer *iobuf ) {
struct net_device *netdev = qp->owner_priv;
struct ipoib_device *ipoib = netdev->priv;
DBG ( "***************** META TX!!!!!! ********\n" );
if ( completion->syndrome ) {
DBGC ( ipoib, "IPoIB %p metadata RX completion error %x\n",
ipoib, completion->syndrome );
} else {
iob_put ( iobuf, completion->len );
DBG ( "Metadata RX:\n" );
DBG_HD ( iobuf->data, iob_len ( iobuf ) );
}
ipoib->meta.recv_fill--;
free_iob ( iobuf );
}
/**
* Refill IPoIB receive ring
*
@@ -349,6 +495,9 @@ static void ipoib_poll ( struct net_device *netdev ) {
ib_poll_cq ( ibdev, ipoib->data.cq, ipoib_data_complete_send,
ipoib_data_complete_recv );
ib_poll_cq ( ibdev, ipoib->meta.cq, ipoib_meta_complete_send,
ipoib_meta_complete_recv );
ipoib_refill_recv ( ipoib, &ipoib->meta );
ipoib_refill_recv ( ipoib, &ipoib->data );
}
@@ -382,7 +531,8 @@ static int ipoib_open ( struct net_device *netdev ) {
return rc;
}
/* Fill receive ring */
/* Fill receive rings */
ipoib_refill_recv ( ipoib, &ipoib->meta );
ipoib_refill_recv ( ipoib, &ipoib->data );
return 0;
@@ -436,6 +586,17 @@ int ipoib_probe ( struct ib_device *ibdev ) {
ipoib->netdev = netdev;
ipoib->ibdev = ibdev;
/* Allocate metadata queue set */
if ( ( rc = ipoib_create_qset ( ipoib, &ipoib->meta,
IPOIB_META_NUM_CQES,
IPOIB_META_NUM_SEND_WQES,
IPOIB_META_NUM_RECV_WQES,
IB_SA_QKEY ) ) != 0 ) {
DBGC ( ipoib, "IPoIB %p could not allocate metadata QP: %s\n",
ipoib, strerror ( rc ) );
goto err_create_meta_qset;
}
/* Allocate data queue set */
if ( ( rc = ipoib_create_qset ( ipoib, &ipoib->data,
IPOIB_DATA_NUM_CQES,
@@ -461,6 +622,8 @@ int ipoib_probe ( struct ib_device *ibdev ) {
err_register_netdev:
ipoib_destroy_qset ( ipoib, &ipoib->data );
err_create_data_qset:
ipoib_destroy_qset ( ipoib, &ipoib->meta );
err_create_meta_qset:
netdev_nullify ( netdev );
netdev_put ( netdev );
return rc;