diff options
Diffstat (limited to 'drivers/infiniband/include/ib_mad.h')
| -rw-r--r-- | drivers/infiniband/include/ib_mad.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/infiniband/include/ib_mad.h b/drivers/infiniband/include/ib_mad.h index 60378c1a9ccf..a6f06b8c4acf 100644 --- a/drivers/infiniband/include/ib_mad.h +++ b/drivers/infiniband/include/ib_mad.h @@ -39,6 +39,8 @@ #if !defined( IB_MAD_H ) #define IB_MAD_H +#include <linux/pci.h> + #include <ib_verbs.h> /* Management base version */ @@ -73,6 +75,7 @@ #define IB_QP0 0 #define IB_QP1 __constant_htonl(1) #define IB_QP1_QKEY 0x80010000 +#define IB_QP_SET_QKEY 0x80000000 struct ib_grh { u32 version_tclass_flow; @@ -124,6 +127,30 @@ struct ib_vendor_mad { u8 data[216]; } __attribute__ ((packed)); +/** + * ib_mad_send_buf - MAD data buffer and work request for sends. + * @mad: References an allocated MAD data buffer. The size of the data + * buffer is specified in the @send_wr.length field. + * @mapping: DMA mapping information. + * @mad_agent: MAD agent that allocated the buffer. + * @context: User-controlled context fields. + * @send_wr: An initialized work request structure used when sending the MAD. + * The wr_id field of the work request is initialized to reference this + * data structure. + * @sge: A scatter-gather list referenced by the work request. + * + * Users are responsible for initializing the MAD buffer itself, with the + * exception of specifying the payload length field in any RMPP MAD. + */ +struct ib_mad_send_buf { + struct ib_mad *mad; + DECLARE_PCI_UNMAP_ADDR(mapping) + struct ib_mad_agent *mad_agent; + void *context[2]; + struct ib_send_wr send_wr; + struct ib_sge sge; +}; + struct ib_mad_agent; struct ib_mad_send_wc; struct ib_mad_recv_wc; @@ -402,4 +429,37 @@ struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp, int ib_process_mad_wc(struct ib_mad_agent *mad_agent, struct ib_wc *wc); +/** + * ib_create_send_mad - Allocate and initialize a data buffer and work request + * for sending a MAD. + * @mad_agent: Specifies the registered MAD service to associate with the MAD. + * @remote_qpn: Specifies the QPN of the receiving node. + * @pkey_index: Specifies which PKey the MAD will be sent using. This field + * is valid only if the remote_qpn is QP 1. + * @ah: References the address handle used to transfer to the remote node. + * @hdr_len: Indicates the size of the data header of the MAD. This length + * should include the common MAD header, RMPP header, plus any class + * specific header. + * @data_len: Indicates the size of any user-transfered data. The call will + * automatically adjust the allocated buffer size to account for any + * additional padding that may be necessary. + * @gfp_mask: GFP mask used for the memory allocation. + * + * This is a helper routine that may be used to allocate a MAD. Users are + * not required to allocate outbound MADs using this call. The returned + * MAD send buffer will reference a data buffer usable for sending a MAD, along + * with an intialized work request structure. + */ +struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent, + u32 remote_qpn, u16 pkey_index, + struct ib_ah *ah, + int hdr_len, int data_len, + unsigned int __nocast gfp_mask); + +/** + * ib_free_send_mad - Returns data buffers used to send a MAD. + * @send_buf: Previously allocated send data buffer. + */ +void ib_free_send_mad(struct ib_mad_send_buf *send_buf); + #endif /* IB_MAD_H */ |