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target: Move cmd->prot_op check into target_write_prot_action
This patch moves the existing target_execute_cmd() check for cmd->prot_op into it's own function, so it's easier to add future support for WRITE STRIP. (Use better target_write_prot_action name - Sagi) Reviewed-by: Martin Petersen <martin.petersen@oracle.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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1 changed files with 22 additions and 9 deletions
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@ -1738,6 +1738,25 @@ void __target_execute_cmd(struct se_cmd *cmd)
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}
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}
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}
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}
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static int target_write_prot_action(struct se_cmd *cmd)
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{
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/*
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* Perform WRITE_INSERT of PI using software emulation when backend
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* device has PI enabled, if the transport has not already generated
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* PI using hardware WRITE_INSERT offload.
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*/
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switch (cmd->prot_op) {
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case TARGET_PROT_DOUT_INSERT:
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if (!(cmd->se_sess->sup_prot_ops & TARGET_PROT_DOUT_INSERT))
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sbc_dif_generate(cmd);
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break;
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default:
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break;
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}
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return 0;
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}
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static bool target_handle_task_attr(struct se_cmd *cmd)
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static bool target_handle_task_attr(struct se_cmd *cmd)
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{
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{
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struct se_device *dev = cmd->se_dev;
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struct se_device *dev = cmd->se_dev;
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@ -1817,15 +1836,9 @@ void target_execute_cmd(struct se_cmd *cmd)
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cmd->t_state = TRANSPORT_PROCESSING;
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cmd->t_state = TRANSPORT_PROCESSING;
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cmd->transport_state |= CMD_T_ACTIVE|CMD_T_BUSY|CMD_T_SENT;
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cmd->transport_state |= CMD_T_ACTIVE|CMD_T_BUSY|CMD_T_SENT;
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spin_unlock_irq(&cmd->t_state_lock);
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spin_unlock_irq(&cmd->t_state_lock);
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/*
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* Perform WRITE_INSERT of PI using software emulation when backend
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if (target_write_prot_action(cmd))
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* device has PI enabled, if the transport has not already generated
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return;
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* PI using hardware WRITE_INSERT offload.
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*/
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if (cmd->prot_op == TARGET_PROT_DOUT_INSERT) {
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if (!(cmd->se_sess->sup_prot_ops & TARGET_PROT_DOUT_INSERT))
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sbc_dif_generate(cmd);
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}
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if (target_handle_task_attr(cmd)) {
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if (target_handle_task_attr(cmd)) {
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spin_lock_irq(&cmd->t_state_lock);
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spin_lock_irq(&cmd->t_state_lock);
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