diff options
Diffstat (limited to 'include/scsi/libfc.h')
| -rw-r--r-- | include/scsi/libfc.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index a2e126b86e3..a70eafaad08 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -245,6 +245,7 @@ struct fc_fcp_pkt { */ struct fcp_cmnd cdb_cmd; size_t xfer_len; + u16 xfer_ddp; /* this xfer is ddped */ u32 xfer_contig_end; /* offset of end of contiguous xfer */ u16 max_payload; /* max payload size in bytes */ @@ -267,6 +268,15 @@ struct fc_fcp_pkt { u8 recov_retry; /* count of recovery retries */ struct fc_seq *recov_seq; /* sequence for REC or SRR */ }; +/* + * FC_FCP HELPER FUNCTIONS + *****************************/ +static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp) +{ + if (fsp && fsp->cmd) + return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE; + return false; +} /* * Structure and function definitions for managing Fibre Channel Exchanges @@ -400,6 +410,21 @@ struct libfc_function_template { void *arg, unsigned int timer_msec); /* + * Sets up the DDP context for a given exchange id on the given + * scatterlist if LLD supports DDP for large receive. + * + * STATUS: OPTIONAL + */ + int (*ddp_setup)(struct fc_lport *lp, u16 xid, + struct scatterlist *sgl, unsigned int sgc); + /* + * Completes the DDP transfer and returns the length of data DDPed + * for the given exchange id. + * + * STATUS: OPTIONAL + */ + int (*ddp_done)(struct fc_lport *lp, u16 xid); + /* * Send a frame using an existing sequence and exchange. * * STATUS: OPTIONAL @@ -654,6 +679,7 @@ struct fc_lport { u16 link_speed; u16 link_supported_speeds; u16 lro_xid; /* max xid for fcoe lro */ + unsigned int lso_max; /* max large send size */ struct fc_ns_fts fcts; /* FC-4 type masks */ struct fc_els_rnid_gen rnid_gen; /* RNID information */ @@ -821,6 +847,11 @@ int fc_change_queue_type(struct scsi_device *sdev, int tag_type); void fc_fcp_destroy(struct fc_lport *); /* + * Set up direct-data placement for this I/O request + */ +void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid); + +/* * ELS/CT interface *****************************/ /* |