c3673464eb
This patch implements the cxgb3i iscsi connection acceleration for the open-iscsi initiator. The cxgb3i driver offers the iscsi PDU based offload: - digest insertion and verification - payload direct-placement into host memory buffer. Signed-off-by: Karen Xie <kxie@chelsio.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
/* cxgb3i_init.c: Chelsio S3xx iSCSI driver.
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*
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* Copyright (c) 2008 Chelsio Communications, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*
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* Written by: Karen Xie (kxie@chelsio.com)
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*/
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#include "cxgb3i.h"
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#define DRV_MODULE_NAME "cxgb3i"
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#define DRV_MODULE_VERSION "1.0.0"
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#define DRV_MODULE_RELDATE "Jun. 1, 2008"
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static char version[] =
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"Chelsio S3xx iSCSI Driver " DRV_MODULE_NAME
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" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
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MODULE_AUTHOR("Karen Xie <kxie@chelsio.com>");
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MODULE_DESCRIPTION("Chelsio S3xx iSCSI Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_MODULE_VERSION);
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static void open_s3_dev(struct t3cdev *);
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static void close_s3_dev(struct t3cdev *);
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static cxgb3_cpl_handler_func cxgb3i_cpl_handlers[NUM_CPL_CMDS];
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static struct cxgb3_client t3c_client = {
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.name = "iscsi_cxgb3",
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.handlers = cxgb3i_cpl_handlers,
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.add = open_s3_dev,
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.remove = close_s3_dev,
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};
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/**
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* open_s3_dev - register with cxgb3 LLD
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* @t3dev: cxgb3 adapter instance
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*/
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static void open_s3_dev(struct t3cdev *t3dev)
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{
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static int vers_printed;
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if (!vers_printed) {
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printk(KERN_INFO "%s", version);
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vers_printed = 1;
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}
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cxgb3i_sdev_add(t3dev, &t3c_client);
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cxgb3i_adapter_add(t3dev);
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}
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/**
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* close_s3_dev - de-register with cxgb3 LLD
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* @t3dev: cxgb3 adapter instance
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*/
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static void close_s3_dev(struct t3cdev *t3dev)
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{
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cxgb3i_adapter_remove(t3dev);
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cxgb3i_sdev_remove(t3dev);
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}
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/**
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* cxgb3i_init_module - module init entry point
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*
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* initialize any driver wide global data structures and register itself
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* with the cxgb3 module
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*/
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static int __init cxgb3i_init_module(void)
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{
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int err;
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err = cxgb3i_sdev_init(cxgb3i_cpl_handlers);
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if (err < 0)
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return err;
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err = cxgb3i_iscsi_init();
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if (err < 0)
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return err;
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err = cxgb3i_pdu_init();
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if (err < 0)
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return err;
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cxgb3_register_client(&t3c_client);
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return 0;
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}
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/**
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* cxgb3i_exit_module - module cleanup/exit entry point
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*
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* go through the driver hba list and for each hba, release any resource held.
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* and unregisters iscsi transport and the cxgb3 module
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*/
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static void __exit cxgb3i_exit_module(void)
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{
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cxgb3_unregister_client(&t3c_client);
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cxgb3i_pdu_cleanup();
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cxgb3i_iscsi_cleanup();
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cxgb3i_sdev_cleanup();
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}
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module_init(cxgb3i_init_module);
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module_exit(cxgb3i_exit_module);
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