diff options
| author |   Yi Zou <yi.zou@intel.com> | 2009-02-27 14:07:21 -0800 |
|---|---|---|
| committer |   James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-03-13 15:15:15 -0500 |
| commit | b277d2aa9a4d969002c4157bf77b76b9ad9ca04a (patch) | |
| tree | 1054ff4ab2d03eaaa527919380ed6334233f632b /include/scsi/libfcoe.h | |
| parent | [SCSI] fcoe: add support to large send by gso through net_device for fcoe_sw (diff) | |
| download | wireguard-linux-b277d2aa9a4d969002c4157bf77b76b9ad9ca04a.tar.xz wireguard-linux-b277d2aa9a4d969002c4157bf77b76b9ad9ca04a.zip | |
[SCSI] libfc: add support of large receive offload by ddp in fc_fcp
When LLD supports direct data placement (ddp) for large receive of an scsi
i/o coming into fc_fcp, we call into libfc_function_template's ddp_setup()
to prepare for a ddp of large receive for this read I/O. When I/O is complete,
we call the corresponding ddp_done() to get the length of data ddped as well
as to let LLD do clean up.
fc_fcp_ddp_setup()/fc_fcp_ddp_done() are added to setup and complete a ddped
read I/O described by the given fc_fcp_pkt. They would call into corresponding
ddp_setup/ddp_done implemented by the fcoe layer. Eventually, fcoe layer calls
into LLD's ddp_setup/ddp_done provided through net_device
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/scsi/libfcoe.h')
| -rw-r--r-- | include/scsi/libfcoe.h | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h index 941818f29f59..c41f7d0c6efc 100644 --- a/include/scsi/libfcoe.h +++ b/include/scsi/libfcoe.h @@ -124,24 +124,6 @@ static inline u16 skb_fc_rxid(const struct sk_buff *skb) return be16_to_cpu(skb_fc_header(skb)->fh_rx_id); } -/* FIXME - DMA_BIDIRECTIONAL ? */ -#define skb_cb(skb) ((struct fcoe_rcv_info *)&((skb)->cb[0])) -#define skb_cmd(skb) (skb_cb(skb)->fr_cmd) -#define skb_dir(skb) (skb_cmd(skb)->sc_data_direction) -static inline bool skb_fc_is_read(const struct sk_buff *skb) -{ - if (skb_fc_is_cmd(skb) && skb_cmd(skb)) - return skb_dir(skb) == DMA_FROM_DEVICE; - return false; -} - -static inline bool skb_fc_is_write(const struct sk_buff *skb) -{ - if (skb_fc_is_cmd(skb) && skb_cmd(skb)) - return skb_dir(skb) == DMA_TO_DEVICE; - return false; -} - /* libfcoe funcs */ int fcoe_reset(struct Scsi_Host *shost); u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN], |