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[infiniband] Add raw packet parser and constructor

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This can be used with cards that require the driver to construct and
parse packet headers manually.  Headers are optionally handled
out-of-line from the packet payload, since some such cards will split
received headers into a separate ring buffer.
This commit is contained in:
Michael Brown
2008-11-07 08:39:40 +00:00
parent c0ec00f47f
commit 9e5fd8ec59
5 changed files with 423 additions and 36 deletions
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1
src/include/gpxe/errfile.h
View File

@@ -136,6 +136,7 @@
#define ERRFILE_dhcppkt ( ERRFILE_NET | 0x00150000 )
#define ERRFILE_slam ( ERRFILE_NET | 0x00160000 )
#define ERRFILE_ib_sma ( ERRFILE_NET | 0x00170000 )
#define ERRFILE_ib_packet ( ERRFILE_NET | 0x00180000 )
#define ERRFILE_image ( ERRFILE_IMAGE | 0x00000000 )
#define ERRFILE_elf ( ERRFILE_IMAGE | 0x00010000 )

35
src/include/gpxe/ib_packet.h
View File

@@ -7,6 +7,11 @@
*
*/
struct ib_device;
struct ib_queue_pair;
struct ib_address_vector;
struct io_buffer;
/** Half of an Infiniband Global Identifier */
struct ib_gid_half {
uint8_t bytes[8];
@@ -53,6 +58,9 @@ enum ib_lnh {
/** Default Infiniband LID */
#define IB_LID_NONE 0xffff
/** Test for multicast LID */
#define IB_LID_MULTICAST( lid ) ( ( (lid) >= 0xc000 ) && ( (lid) <= 0xfffe ) )
/** An Infiniband Global Route Header */
struct ib_global_route_header {
/** IP version, traffic class, and flow label
@@ -76,7 +84,6 @@ struct ib_global_route_header {
#define IB_GRH_IPVER_IPv6 0x06
#define IB_GRH_NXTHDR_IBA 0x1b
#define IB_GRH_HOPLMT_MAX 0xff
/** An Infiniband Base Transport Header */
struct ib_base_transport_header {
@@ -111,4 +118,30 @@ struct ib_datagram_extended_transport_header {
uint32_t src_qp;
} __attribute__ (( packed ));
/** All known IB header formats */
union ib_headers {
struct ib_local_route_header lrh;
struct {
struct ib_local_route_header lrh;
struct ib_global_route_header grh;
struct ib_base_transport_header bth;
struct ib_datagram_extended_transport_header deth;
} __attribute__ (( packed )) lrh__grh__bth__deth;
struct {
struct ib_local_route_header lrh;
struct ib_base_transport_header bth;
struct ib_datagram_extended_transport_header deth;
} __attribute__ (( packed )) lrh__bth__deth;
} __attribute__ (( packed ));
/** Maximum size required for IB headers */
#define IB_MAX_HEADER_SIZE sizeof ( union ib_headers )
extern int ib_push ( struct ib_device *ibdev, struct io_buffer *iobuf,
struct ib_queue_pair *qp, size_t payload_len,
const struct ib_address_vector *av );
extern int ib_pull ( struct ib_device *ibdev, struct io_buffer *iobuf,
struct ib_queue_pair **qp, size_t *payload_len,
struct ib_address_vector *av );
#endif /* _GPXE_IB_PACKET_H */

54
src/include/gpxe/infiniband.h
View File

@@ -55,8 +55,20 @@ struct ib_work_queue {
void *drv_priv;
};
/** An Infiniband multicast GID */
struct ib_multicast_gid {
/** List of multicast GIDs on this QP */
struct list_head list;
/** Multicast GID */
struct ib_gid gid;
};
/** An Infiniband Queue Pair */
struct ib_queue_pair {
/** Containing Infiniband device */
struct ib_device *ibdev;
/** List of queue pairs on this Infiniband device */
struct list_head list;
/** Queue Pair Number */
unsigned long qpn;
/** Queue key */
@@ -65,6 +77,8 @@ struct ib_queue_pair {
struct ib_work_queue send;
/** Receive queue */
struct ib_work_queue recv;
/** List of multicast GIDs */
struct list_head mgids;
/** Driver private data */
void *drv_priv;
/** Queue owner private data */
@@ -286,6 +300,8 @@ struct ib_device {
struct list_head list;
/** Underlying device */
struct device *dev;
/** List of queue pairs */
struct list_head qps;
/** Infiniband operations */
struct ib_device_operations *op;
/** Port number */
@@ -308,6 +324,9 @@ struct ib_device {
/** Partition key */
uint16_t pkey;
/** Outbound packet sequence number */
uint32_t psn;
/** Driver private data */
void *drv_priv;
/** Owner private data */
@@ -327,6 +346,10 @@ extern int ib_modify_qp ( struct ib_device *ibdev, struct ib_queue_pair *qp,
unsigned long mod_list, unsigned long qkey );
extern void ib_destroy_qp ( struct ib_device *ibdev,
struct ib_queue_pair *qp );
extern struct ib_queue_pair * ib_find_qp_qpn ( struct ib_device *ibdev,
unsigned long qpn );
extern struct ib_queue_pair * ib_find_qp_mgid ( struct ib_device *ibdev,
struct ib_gid *gid );
extern struct ib_work_queue * ib_find_wq ( struct ib_completion_queue *cq,
unsigned long qpn, int is_send );
extern int ib_post_send ( struct ib_device *ibdev, struct ib_queue_pair *qp,
@@ -341,6 +364,10 @@ extern void ib_complete_recv ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
struct ib_address_vector *av,
struct io_buffer *iobuf, int rc );
extern int ib_mcast_attach ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_gid *gid );
extern void ib_mcast_detach ( struct ib_device *ibdev,
struct ib_queue_pair *qp, struct ib_gid *gid );
extern struct ib_device * alloc_ibdev ( size_t priv_size );
extern int register_ibdev ( struct ib_device *ibdev );
extern void unregister_ibdev ( struct ib_device *ibdev );
@@ -394,33 +421,6 @@ ib_link_ok ( struct ib_device *ibdev ) {
return ( ibdev->port_state == IB_PORT_STATE_ACTIVE );
}
/**
* Attach to multicast group
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v gid Multicast GID
* @ret rc Return status code
*/
static inline __always_inline int
ib_mcast_attach ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_gid *gid ) {
return ibdev->op->mcast_attach ( ibdev, qp, gid );
}
/**
* Detach from multicast group
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v gid Multicast GID
*/
static inline __always_inline void
ib_mcast_detach ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_gid *gid ) {
ibdev->op->mcast_detach ( ibdev, qp, gid );
}
/**
* Get reference to Infiniband device
*