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Now handling TX completions in our poll loop.

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This commit is contained in:
Michael Brown 2007-09-14 11:10:25 +01:00
parent e69863b5fb
commit 08e8dfd801
3 changed files with 74 additions and 75 deletions
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113
src/drivers/net/mlx_ipoib/mt25218.c
View File

@ -16,9 +16,6 @@ Skeleton NIC driver for Etherboot
#include <gpxe/netdevice.h>
#include <gpxe/infiniband.h>
struct mlx_nic {
};
/* to get some global routines like printf */
#include "etherboot.h"
/* to get the interface to the body of the program */
@ -27,6 +24,16 @@ struct mlx_nic {
#include "mt_version.c"
#include "mt25218_imp.c"
struct mlx_nic {
/** Queue pair handle */
udqp_t ipoib_qph;
/** Broadcast Address Vector */
ud_av_t bcast_av;
/** Send completion queue */
cq_t snd_cqh;
/** Receive completion queue */
cq_t rcv_cqh;
};
int prompt_key(int secs, unsigned char *ch_p)
{
@ -192,8 +199,28 @@ static uint8_t ib_broadcast[IB_ALEN] = { 0xff, };
*/
static int mlx_transmit ( struct net_device *netdev,
struct io_buffer *iobuf ) {
struct ibhdr *ibhdr = iobuf->data;
struct mlx_nic *mlx = netdev->priv;
ud_send_wqe_t snd_wqe;
int rc;
snd_wqe = alloc_send_wqe ( mlx->ipoib_qph );
if ( ! snd_wqe ) {
DBGC ( mlx, "MLX %p out of TX WQEs\n", mlx );
return -ENOBUFS;
}
prep_send_wqe_buf ( mlx->ipoib_qph, mlx->bcast_av, snd_wqe,
iobuf->data, 0, iob_len ( iobuf ), 0 );
if ( ( rc = post_send_req ( mlx->ipoib_qph, snd_wqe, 1 ) ) != 0 ) {
DBGC ( mlx, "MLX %p could not post TX WQE %p: %s\n",
mlx, snd_wqe, strerror ( rc ) );
free_wqe ( snd_wqe );
return rc;
}
return 0;
#if 0
( void ) netdev;
iob_pull ( iobuf, sizeof ( *ibhdr ) );
@ -208,46 +235,47 @@ static int mlx_transmit ( struct net_device *netdev,
ntohs ( ibhdr->proto ),
iobuf->data, iob_len ( iobuf ) );
}
#endif
}
/**
* Handle TX completion
*
* @v netdev Network device
* @v cqe Completion queue entry
* @v ib_cqe Completion queue entry
*/
static void mlx_tx_complete ( struct net_device *netdev,
struct ib_cqe_st *cqe ) {
struct ib_cqe_st *ib_cqe ) {
netdev_tx_complete_next_err ( netdev,
( cqe->is_error ? -EIO : 0 ) );
( ib_cqe->is_error ? -EIO : 0 ) );
}
/**
* Handle RX completion
*
* @v netdev Network device
* @v cqe Completion queue entry
* @v ib_cqe Completion queue entry
*/
static void mlx_rx_complete ( struct net_device *netdev,
struct ib_cqe_st *cqe ) {
struct ib_cqe_st *ib_cqe ) {
unsigned int len;
struct io_buffer *iobuf;
void *buf;
/* Check for errors */
if ( cqe->is_error ) {
if ( ib_cqe->is_error ) {
netdev_rx_err ( netdev, NULL, -EIO );
return;
}
/* Allocate I/O buffer */
len = cqe->count;
len = ( ib_cqe->count - GRH_SIZE );
iobuf = alloc_iob ( len );
if ( ! iobuf ) {
netdev_rx_err ( netdev, NULL, -ENOMEM );
return;
}
buf = get_rcv_wqe_buf ( cqe->wqe, 1 );
buf = get_rcv_wqe_buf ( ib_cqe->wqe, 1 );
memcpy ( iob_put ( iobuf, len ), buf, len );
// DBG ( "Received packet header:\n" );
// struct recv_wqe_st *rcv_wqe = ib_cqe.wqe;
@ -263,52 +291,33 @@ static void mlx_rx_complete ( struct net_device *netdev,
*
* @v netdev Network device
* @v cq Completion queue
* @v handler Completion handler
*/
static void mlx_poll_cq ( struct net_device *netdev,
struct cq_st *cq ) {
static void mlx_poll_cq ( struct net_device *netdev, cq_t cq,
void ( * handler ) ( struct net_device *netdev,
struct ib_cqe_st *ib_cqe ) ) {
struct mlx_nic *mlx = netdev->priv;
struct ib_cqe_st cqe;
struct ib_cqe_st ib_cqe;
uint8_t num_cqes;
while ( 1 ) {
unsigned long cons_idx;
union cqe_st *temp;
cons_idx = ( cq->cons_counter & ( cq->num_cqes - 1 ) );
temp = &cq->cq_buf[cons_idx];
if ( EX_FLD_BE ( temp, arbelprm_completion_queue_entry_st,
owner ) == 0 ) {
DBG ( "software owned\n" );
DBGC_HD ( mlx, temp, sizeof ( *temp ) );
DBG ( "my_qpn=%lx, g=%ld, s=%ld, op=%02lx, cnt=%lx\n",
EX_FLD_BE ( temp, arbelprm_completion_queue_entry_st, my_qpn ),
EX_FLD_BE ( temp, arbelprm_completion_queue_entry_st, g ),
EX_FLD_BE ( temp, arbelprm_completion_queue_entry_st, s ),
EX_FLD_BE ( temp, arbelprm_completion_queue_entry_st, opcode ),
EX_FLD_BE ( temp, arbelprm_completion_queue_entry_st, byte_cnt ) );
}
/* Poll for single completion queue entry */
ib_poll_cq ( cq, &cqe, &num_cqes );
ib_poll_cq ( cq, &ib_cqe, &num_cqes );
/* Return if no entries in the queue */
if ( ! num_cqes )
return;
DBGC ( mlx, "MLX %p cpl in %p: err %x send %x "
"wqe %p count %lx\n", mlx, cq, cqe.is_error,
cqe.is_send, cqe.wqe, cqe.count );
"wqe %p count %lx\n", mlx, cq, ib_cqe.is_error,
ib_cqe.is_send, ib_cqe.wqe, ib_cqe.count );
/* Handle TX/RX completion */
if ( cqe.is_send ) {
mlx_tx_complete ( netdev, &cqe );
} else {
mlx_rx_complete ( netdev, &cqe );
}
handler ( netdev, &ib_cqe );
/* Free associated work queue entry */
free_wqe ( cqe.wqe );
free_wqe ( ib_cqe.wqe );
}
}
@ -318,6 +327,7 @@ static void mlx_poll_cq ( struct net_device *netdev,
* @v netdev Network device
*/
static void mlx_poll ( struct net_device *netdev ) {
struct mlx_nic *mlx = netdev->priv;
int rc;
if ( ( rc = poll_error_buf() ) != 0 ) {
@ -330,8 +340,8 @@ static void mlx_poll ( struct net_device *netdev ) {
return;
}
// mlx_poll_cq ( netdev, ipoib_data.snd_cqh );
mlx_poll_cq ( netdev, ipoib_data.rcv_cqh );
mlx_poll_cq ( netdev, mlx->snd_cqh, mlx_tx_complete );
mlx_poll_cq ( netdev, mlx->rcv_cqh, mlx_rx_complete );
}
/**
@ -386,7 +396,7 @@ static void mlx_remove ( struct pci_device *pci ) {
struct net_device *netdev = pci_get_drvdata ( pci );
unregister_netdev ( netdev );
ipoib_close(0);
ib_driver_close ( 0 );
netdev_nullify ( netdev );
netdev_put ( netdev );
}
@ -473,6 +483,7 @@ static int mlx_probe ( struct pci_device *pci,
struct net_device *netdev;
struct mlx_nic *mlx;
struct ib_mac *mac;
udqp_t qph;
int rc;
/* Allocate net device */
@ -489,11 +500,15 @@ static int mlx_probe ( struct pci_device *pci,
adjust_pci_device ( pci );
/* Initialise hardware */
if ( ( rc = ipoib_init ( pci ) ) != 0 )
if ( ( rc = ib_driver_init ( pci, &qph ) ) != 0 )
goto err_ipoib_init;
mlx->ipoib_qph = qph;
mlx->bcast_av = ib_data.bcast_av;
mlx->snd_cqh = ib_data.ipoib_snd_cq;
mlx->rcv_cqh = ib_data.ipoib_rcv_cq;
mac = ( ( struct ib_mac * ) netdev->ll_addr );
mac->qpn = htonl ( ipoib_data.ipoib_qpn );
memcpy ( &mac->gid, ipoib_data.port_gid_raw, sizeof ( mac->gid ) );
mac->qpn = htonl ( ib_get_qpn ( mlx->ipoib_qph ) );
memcpy ( &mac->gid, ib_data.port_gid.raw, sizeof ( mac->gid ) );
/* Register network device */
if ( ( rc = register_netdev ( netdev ) ) != 0 )
@ -503,7 +518,7 @@ static int mlx_probe ( struct pci_device *pci,
err_register_netdev:
err_ipoib_init:
ipoib_close(0);
ib_driver_close ( 0 );
netdev_nullify ( netdev );
netdev_put ( netdev );
return rc;

19
src/include/gpxe/infiniband.h
View File

@ -10,10 +10,6 @@
#include <stdint.h>
#include <gpxe/netdevice.h>
/** Infiniband hardware address length */
#define IB_ALEN 20
#define IB_HLEN 24
/** An Infiniband Global Identifier */
struct ib_gid {
uint8_t bytes[16];
@ -40,6 +36,9 @@ struct ib_global_route_header {
struct ib_gid dgid;
} __attribute__ (( packed ));
/** Infiniband MAC address length */
#define IB_ALEN 20
/** An Infiniband MAC address */
struct ib_mac {
/** Queue pair number
@ -51,15 +50,11 @@ struct ib_mac {
struct ib_gid gid;
} __attribute__ (( packed ));
/** An Infiniband header
*
* This data structure doesn't represent the on-wire format, but does
* contain all the information required by the driver to construct the
* packet.
*/
/** Infiniband link-layer header length */
#define IB_HLEN 4
/** An Infiniband link-layer header */
struct ibhdr {
/** Peer address */
uint8_t peer[IB_ALEN];
/** Network-layer protocol */
uint16_t proto;
/** Reserved, must be zero */

17
src/net/infiniband.c
View File

@ -50,12 +50,12 @@ static int ib_tx ( struct io_buffer *iobuf, struct net_device *netdev,
struct net_protocol *net_protocol, const void *ll_dest ) {
struct ibhdr *ibhdr = iob_push ( iobuf, sizeof ( *ibhdr ) );
/* Build Infiniband header */
memcpy ( ibhdr->peer, ll_dest, IB_ALEN );
ibhdr->proto = net_protocol->net_proto;
ibhdr->reserved = 0;
( void ) ll_dest;
/* Hand off to network device */
return netdev_tx ( netdev, iobuf );
}
@ -70,17 +70,6 @@ static int ib_tx ( struct io_buffer *iobuf, struct net_device *netdev,
* network-layer protocol.
*/
static int ib_rx ( struct io_buffer *iobuf, struct net_device *netdev ) {
struct {
uint16_t proto;
uint16_t reserved;
} * header = iobuf->data;
iob_pull ( iobuf, sizeof ( *header ) );
return net_rx ( iobuf, netdev, header->proto, NULL );
struct ibhdr *ibhdr = iobuf->data;
/* Sanity check */
@ -95,7 +84,7 @@ static int ib_rx ( struct io_buffer *iobuf, struct net_device *netdev ) {
iob_pull ( iobuf, sizeof ( *ibhdr ) );
/* Hand off to network-layer protocol */
return net_rx ( iobuf, netdev, ibhdr->proto, ibhdr->peer );
return net_rx ( iobuf, netdev, ibhdr->proto, NULL );
}
/**