[SCSI] fcoe: support ndo_fcoe_ddp_target() for DDP in FCoE targe
Add ddp_target() support to the Open-FCoE sw fcoe hba driver (fcoe.ko). Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Kiran Patil <kiran.patil@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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@ -99,7 +99,8 @@ static void fcoe_destroy_work(struct work_struct *);
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static int fcoe_ddp_setup(struct fc_lport *, u16, struct scatterlist *,
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unsigned int);
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static int fcoe_ddp_done(struct fc_lport *, u16);
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static int fcoe_ddp_target(struct fc_lport *, u16, struct scatterlist *,
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unsigned int);
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static int fcoe_cpu_callback(struct notifier_block *, unsigned long, void *);
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static bool fcoe_match(struct net_device *netdev);
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@ -143,6 +144,7 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = {
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.frame_send = fcoe_xmit,
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.ddp_setup = fcoe_ddp_setup,
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.ddp_done = fcoe_ddp_done,
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.ddp_target = fcoe_ddp_target,
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.elsct_send = fcoe_elsct_send,
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.get_lesb = fcoe_get_lesb,
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.lport_set_port_id = fcoe_set_port_id,
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@ -886,6 +888,28 @@ static int fcoe_ddp_setup(struct fc_lport *lport, u16 xid,
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return 0;
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}
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/**
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* fcoe_ddp_target() - Call a LLD's ddp_target through the net device
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* @lport: The local port to setup DDP for
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* @xid: The exchange ID for this DDP transfer
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* @sgl: The scatterlist describing this transfer
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* @sgc: The number of sg items
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*
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* Returns: 0 if the DDP context was not configured
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*/
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static int fcoe_ddp_target(struct fc_lport *lport, u16 xid,
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struct scatterlist *sgl, unsigned int sgc)
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{
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struct net_device *netdev = fcoe_netdev(lport);
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if (netdev->netdev_ops->ndo_fcoe_ddp_target)
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return netdev->netdev_ops->ndo_fcoe_ddp_target(netdev, xid,
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sgl, sgc);
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return 0;
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}
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/**
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* fcoe_ddp_done() - Call a LLD's ddp_done through the net device
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* @lport: The local port to complete DDP on
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