mirror of https://gitee.com/openkylin/linux.git
2817 lines
72 KiB
C
2817 lines
72 KiB
C
/* bnx2fc_fcoe.c: Broadcom NetXtreme II Linux FCoE offload driver.
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* This file contains the code that interacts with libfc, libfcoe,
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* cnic modules to create FCoE instances, send/receive non-offloaded
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* FIP/FCoE packets, listen to link events etc.
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*
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* Copyright (c) 2008 - 2013 Broadcom Corporation
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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: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
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*/
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#include "bnx2fc.h"
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static struct list_head adapter_list;
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static struct list_head if_list;
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static u32 adapter_count;
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static DEFINE_MUTEX(bnx2fc_dev_lock);
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DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
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#define DRV_MODULE_NAME "bnx2fc"
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#define DRV_MODULE_VERSION BNX2FC_VERSION
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#define DRV_MODULE_RELDATE "Dec 11, 2013"
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static char version[] =
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"Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
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" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
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MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
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MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_MODULE_VERSION);
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#define BNX2FC_MAX_QUEUE_DEPTH 256
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#define BNX2FC_MIN_QUEUE_DEPTH 32
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#define FCOE_WORD_TO_BYTE 4
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static struct scsi_transport_template *bnx2fc_transport_template;
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static struct scsi_transport_template *bnx2fc_vport_xport_template;
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struct workqueue_struct *bnx2fc_wq;
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/* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
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* Here the io threads are per cpu but the l2 thread is just one
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*/
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struct fcoe_percpu_s bnx2fc_global;
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DEFINE_SPINLOCK(bnx2fc_global_lock);
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static struct cnic_ulp_ops bnx2fc_cnic_cb;
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static struct libfc_function_template bnx2fc_libfc_fcn_templ;
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static struct scsi_host_template bnx2fc_shost_template;
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static struct fc_function_template bnx2fc_transport_function;
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static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
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static struct fc_function_template bnx2fc_vport_xport_function;
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static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
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static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
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static int bnx2fc_destroy(struct net_device *net_device);
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static int bnx2fc_enable(struct net_device *netdev);
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static int bnx2fc_disable(struct net_device *netdev);
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/* fcoe_syfs control interface handlers */
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static int bnx2fc_ctlr_alloc(struct net_device *netdev);
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static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
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static void bnx2fc_recv_frame(struct sk_buff *skb);
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static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
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static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
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static int bnx2fc_lport_config(struct fc_lport *lport);
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static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
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static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
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static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
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static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
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static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
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static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
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struct device *parent, int npiv);
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static void bnx2fc_destroy_work(struct work_struct *work);
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static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
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static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
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*phys_dev);
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static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
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static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
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static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
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static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
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static void bnx2fc_port_shutdown(struct fc_lport *lport);
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static void bnx2fc_stop(struct bnx2fc_interface *interface);
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static int __init bnx2fc_mod_init(void);
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static void __exit bnx2fc_mod_exit(void);
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unsigned int bnx2fc_debug_level;
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module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
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static int bnx2fc_cpu_callback(struct notifier_block *nfb,
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unsigned long action, void *hcpu);
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/* notification function for CPU hotplug events */
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static struct notifier_block bnx2fc_cpu_notifier = {
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.notifier_call = bnx2fc_cpu_callback,
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};
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static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
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{
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return ((struct bnx2fc_interface *)
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((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
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}
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static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
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{
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struct fcoe_ctlr_device *ctlr_dev =
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fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
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struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
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struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
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fcf_dev->vlan_id = fcoe->vlan_id;
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}
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static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
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{
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struct fcoe_percpu_s *bg;
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struct fcoe_rcv_info *fr;
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struct sk_buff_head *list;
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struct sk_buff *skb, *next;
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struct sk_buff *head;
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bg = &bnx2fc_global;
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spin_lock_bh(&bg->fcoe_rx_list.lock);
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list = &bg->fcoe_rx_list;
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head = list->next;
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for (skb = head; skb != (struct sk_buff *)list;
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skb = next) {
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next = skb->next;
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fr = fcoe_dev_from_skb(skb);
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if (fr->fr_dev == lp) {
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__skb_unlink(skb, list);
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kfree_skb(skb);
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}
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}
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spin_unlock_bh(&bg->fcoe_rx_list.lock);
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}
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int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
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{
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int rc;
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spin_lock(&bnx2fc_global_lock);
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rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
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spin_unlock(&bnx2fc_global_lock);
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return rc;
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}
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static void bnx2fc_abort_io(struct fc_lport *lport)
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{
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/*
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* This function is no-op for bnx2fc, but we do
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* not want to leave it as NULL either, as libfc
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* can call the default function which is
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* fc_fcp_abort_io.
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*/
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}
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static void bnx2fc_cleanup(struct fc_lport *lport)
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{
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struct fcoe_port *port = lport_priv(lport);
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struct bnx2fc_interface *interface = port->priv;
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struct bnx2fc_hba *hba = interface->hba;
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struct bnx2fc_rport *tgt;
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int i;
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BNX2FC_MISC_DBG("Entered %s\n", __func__);
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mutex_lock(&hba->hba_mutex);
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spin_lock_bh(&hba->hba_lock);
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for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
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tgt = hba->tgt_ofld_list[i];
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if (tgt) {
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/* Cleanup IOs belonging to requested vport */
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if (tgt->port == port) {
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spin_unlock_bh(&hba->hba_lock);
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BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
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bnx2fc_flush_active_ios(tgt);
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spin_lock_bh(&hba->hba_lock);
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}
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}
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}
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spin_unlock_bh(&hba->hba_lock);
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mutex_unlock(&hba->hba_mutex);
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}
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static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
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struct fc_frame *fp)
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{
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struct fc_rport_priv *rdata = tgt->rdata;
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struct fc_frame_header *fh;
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int rc = 0;
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fh = fc_frame_header_get(fp);
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BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
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"r_ctl = 0x%x\n", rdata->ids.port_id,
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ntohs(fh->fh_ox_id), fh->fh_r_ctl);
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if ((fh->fh_type == FC_TYPE_ELS) &&
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(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
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switch (fc_frame_payload_op(fp)) {
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case ELS_ADISC:
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rc = bnx2fc_send_adisc(tgt, fp);
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break;
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case ELS_LOGO:
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rc = bnx2fc_send_logo(tgt, fp);
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break;
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case ELS_RLS:
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rc = bnx2fc_send_rls(tgt, fp);
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break;
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default:
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break;
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}
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} else if ((fh->fh_type == FC_TYPE_BLS) &&
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(fh->fh_r_ctl == FC_RCTL_BA_ABTS))
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BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
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else {
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BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
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"rctl 0x%x thru non-offload path\n",
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fh->fh_type, fh->fh_r_ctl);
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return -ENODEV;
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}
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if (rc)
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return -ENOMEM;
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else
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return 0;
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}
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/**
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* bnx2fc_xmit - bnx2fc's FCoE frame transmit function
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*
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* @lport: the associated local port
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* @fp: the fc_frame to be transmitted
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*/
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static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
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{
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struct ethhdr *eh;
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struct fcoe_crc_eof *cp;
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struct sk_buff *skb;
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struct fc_frame_header *fh;
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struct bnx2fc_interface *interface;
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struct fcoe_ctlr *ctlr;
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struct bnx2fc_hba *hba;
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struct fcoe_port *port;
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struct fcoe_hdr *hp;
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struct bnx2fc_rport *tgt;
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struct fc_stats *stats;
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u8 sof, eof;
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u32 crc;
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unsigned int hlen, tlen, elen;
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int wlen, rc = 0;
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port = (struct fcoe_port *)lport_priv(lport);
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interface = port->priv;
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ctlr = bnx2fc_to_ctlr(interface);
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hba = interface->hba;
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fh = fc_frame_header_get(fp);
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skb = fp_skb(fp);
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if (!lport->link_up) {
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BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
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kfree_skb(skb);
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return 0;
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}
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if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
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if (!ctlr->sel_fcf) {
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BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
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kfree_skb(skb);
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return -EINVAL;
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}
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if (fcoe_ctlr_els_send(ctlr, lport, skb))
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return 0;
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}
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sof = fr_sof(fp);
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eof = fr_eof(fp);
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/*
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* Snoop the frame header to check if the frame is for
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* an offloaded session
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*/
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/*
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* tgt_ofld_list access is synchronized using
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* both hba mutex and hba lock. Atleast hba mutex or
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* hba lock needs to be held for read access.
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*/
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spin_lock_bh(&hba->hba_lock);
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tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
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if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
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/* This frame is for offloaded session */
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BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
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"port_id = 0x%x\n", ntoh24(fh->fh_d_id));
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spin_unlock_bh(&hba->hba_lock);
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rc = bnx2fc_xmit_l2_frame(tgt, fp);
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if (rc != -ENODEV) {
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kfree_skb(skb);
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return rc;
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}
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} else {
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spin_unlock_bh(&hba->hba_lock);
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}
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elen = sizeof(struct ethhdr);
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hlen = sizeof(struct fcoe_hdr);
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tlen = sizeof(struct fcoe_crc_eof);
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wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
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skb->ip_summed = CHECKSUM_NONE;
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crc = fcoe_fc_crc(fp);
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/* copy port crc and eof to the skb buff */
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if (skb_is_nonlinear(skb)) {
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skb_frag_t *frag;
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if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
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kfree_skb(skb);
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return -ENOMEM;
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}
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frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
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cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
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} else {
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cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
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}
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memset(cp, 0, sizeof(*cp));
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cp->fcoe_eof = eof;
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cp->fcoe_crc32 = cpu_to_le32(~crc);
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if (skb_is_nonlinear(skb)) {
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kunmap_atomic(cp);
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cp = NULL;
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}
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/* adjust skb network/transport offsets to match mac/fcoe/port */
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skb_push(skb, elen + hlen);
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skb_reset_mac_header(skb);
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skb_reset_network_header(skb);
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skb->mac_len = elen;
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skb->protocol = htons(ETH_P_FCOE);
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skb->dev = interface->netdev;
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/* fill up mac and fcoe headers */
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eh = eth_hdr(skb);
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eh->h_proto = htons(ETH_P_FCOE);
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if (ctlr->map_dest)
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fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
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else
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/* insert GW address */
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memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
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if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
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memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
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else
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memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
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hp = (struct fcoe_hdr *)(eh + 1);
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memset(hp, 0, sizeof(*hp));
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if (FC_FCOE_VER)
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FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
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hp->fcoe_sof = sof;
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/* fcoe lso, mss is in max_payload which is non-zero for FCP data */
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if (lport->seq_offload && fr_max_payload(fp)) {
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skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
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skb_shinfo(skb)->gso_size = fr_max_payload(fp);
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} else {
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skb_shinfo(skb)->gso_type = 0;
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skb_shinfo(skb)->gso_size = 0;
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}
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/*update tx stats */
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stats = per_cpu_ptr(lport->stats, get_cpu());
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stats->TxFrames++;
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stats->TxWords += wlen;
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put_cpu();
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/* send down to lld */
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fr_dev(fp) = lport;
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if (port->fcoe_pending_queue.qlen)
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fcoe_check_wait_queue(lport, skb);
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else if (fcoe_start_io(skb))
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fcoe_check_wait_queue(lport, skb);
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return 0;
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}
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|
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/**
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* bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
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*
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* @skb: the receive socket buffer
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* @dev: associated net device
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* @ptype: context
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* @olddev: last device
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*
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* This function receives the packet and builds FC frame and passes it up
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*/
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static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
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struct packet_type *ptype, struct net_device *olddev)
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{
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struct fc_lport *lport;
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struct bnx2fc_interface *interface;
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struct fcoe_ctlr *ctlr;
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struct fc_frame_header *fh;
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struct fcoe_rcv_info *fr;
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struct fcoe_percpu_s *bg;
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unsigned short oxid;
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interface = container_of(ptype, struct bnx2fc_interface,
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fcoe_packet_type);
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ctlr = bnx2fc_to_ctlr(interface);
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lport = ctlr->lp;
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if (unlikely(lport == NULL)) {
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printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
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goto err;
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}
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|
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if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
|
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printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
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goto err;
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}
|
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|
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/*
|
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* Check for minimum frame length, and make sure required FCoE
|
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* and FC headers are pulled into the linear data area.
|
|
*/
|
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if (unlikely((skb->len < FCOE_MIN_FRAME) ||
|
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!pskb_may_pull(skb, FCOE_HEADER_LEN)))
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goto err;
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|
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skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
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fh = (struct fc_frame_header *) skb_transport_header(skb);
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oxid = ntohs(fh->fh_ox_id);
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|
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fr = fcoe_dev_from_skb(skb);
|
|
fr->fr_dev = lport;
|
|
|
|
bg = &bnx2fc_global;
|
|
spin_lock(&bg->fcoe_rx_list.lock);
|
|
|
|
__skb_queue_tail(&bg->fcoe_rx_list, skb);
|
|
if (bg->fcoe_rx_list.qlen == 1)
|
|
wake_up_process(bg->thread);
|
|
|
|
spin_unlock(&bg->fcoe_rx_list.lock);
|
|
|
|
return 0;
|
|
err:
|
|
kfree_skb(skb);
|
|
return -1;
|
|
}
|
|
|
|
static int bnx2fc_l2_rcv_thread(void *arg)
|
|
{
|
|
struct fcoe_percpu_s *bg = arg;
|
|
struct sk_buff *skb;
|
|
|
|
set_user_nice(current, MIN_NICE);
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
while (!kthread_should_stop()) {
|
|
schedule();
|
|
spin_lock_bh(&bg->fcoe_rx_list.lock);
|
|
while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
|
|
spin_unlock_bh(&bg->fcoe_rx_list.lock);
|
|
bnx2fc_recv_frame(skb);
|
|
spin_lock_bh(&bg->fcoe_rx_list.lock);
|
|
}
|
|
__set_current_state(TASK_INTERRUPTIBLE);
|
|
spin_unlock_bh(&bg->fcoe_rx_list.lock);
|
|
}
|
|
__set_current_state(TASK_RUNNING);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void bnx2fc_recv_frame(struct sk_buff *skb)
|
|
{
|
|
u32 fr_len;
|
|
struct fc_lport *lport;
|
|
struct fcoe_rcv_info *fr;
|
|
struct fc_stats *stats;
|
|
struct fc_frame_header *fh;
|
|
struct fcoe_crc_eof crc_eof;
|
|
struct fc_frame *fp;
|
|
struct fc_lport *vn_port;
|
|
struct fcoe_port *port;
|
|
u8 *mac = NULL;
|
|
u8 *dest_mac = NULL;
|
|
struct fcoe_hdr *hp;
|
|
|
|
fr = fcoe_dev_from_skb(skb);
|
|
lport = fr->fr_dev;
|
|
if (unlikely(lport == NULL)) {
|
|
printk(KERN_ERR PFX "Invalid lport struct\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
if (skb_is_nonlinear(skb))
|
|
skb_linearize(skb);
|
|
mac = eth_hdr(skb)->h_source;
|
|
dest_mac = eth_hdr(skb)->h_dest;
|
|
|
|
/* Pull the header */
|
|
hp = (struct fcoe_hdr *) skb_network_header(skb);
|
|
fh = (struct fc_frame_header *) skb_transport_header(skb);
|
|
skb_pull(skb, sizeof(struct fcoe_hdr));
|
|
fr_len = skb->len - sizeof(struct fcoe_crc_eof);
|
|
|
|
fp = (struct fc_frame *)skb;
|
|
fc_frame_init(fp);
|
|
fr_dev(fp) = lport;
|
|
fr_sof(fp) = hp->fcoe_sof;
|
|
if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
fr_eof(fp) = crc_eof.fcoe_eof;
|
|
fr_crc(fp) = crc_eof.fcoe_crc32;
|
|
if (pskb_trim(skb, fr_len)) {
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
|
|
vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
|
|
if (vn_port) {
|
|
port = lport_priv(vn_port);
|
|
if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
|
|
BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
}
|
|
if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
|
|
fh->fh_type == FC_TYPE_FCP) {
|
|
/* Drop FCP data. We dont this in L2 path */
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
|
|
fh->fh_type == FC_TYPE_ELS) {
|
|
switch (fc_frame_payload_op(fp)) {
|
|
case ELS_LOGO:
|
|
if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
|
|
/* drop non-FIP LOGO */
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
|
|
/* Drop incoming ABTS */
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
stats = per_cpu_ptr(lport->stats, smp_processor_id());
|
|
stats->RxFrames++;
|
|
stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
|
|
|
|
if (le32_to_cpu(fr_crc(fp)) !=
|
|
~crc32(~0, skb->data, fr_len)) {
|
|
if (stats->InvalidCRCCount < 5)
|
|
printk(KERN_WARNING PFX "dropping frame with "
|
|
"CRC error\n");
|
|
stats->InvalidCRCCount++;
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
fc_exch_recv(lport, fp);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_percpu_io_thread - thread per cpu for ios
|
|
*
|
|
* @arg: ptr to bnx2fc_percpu_info structure
|
|
*/
|
|
int bnx2fc_percpu_io_thread(void *arg)
|
|
{
|
|
struct bnx2fc_percpu_s *p = arg;
|
|
struct bnx2fc_work *work, *tmp;
|
|
LIST_HEAD(work_list);
|
|
|
|
set_user_nice(current, MIN_NICE);
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
while (!kthread_should_stop()) {
|
|
schedule();
|
|
spin_lock_bh(&p->fp_work_lock);
|
|
while (!list_empty(&p->work_list)) {
|
|
list_splice_init(&p->work_list, &work_list);
|
|
spin_unlock_bh(&p->fp_work_lock);
|
|
|
|
list_for_each_entry_safe(work, tmp, &work_list, list) {
|
|
list_del_init(&work->list);
|
|
bnx2fc_process_cq_compl(work->tgt, work->wqe);
|
|
kfree(work);
|
|
}
|
|
|
|
spin_lock_bh(&p->fp_work_lock);
|
|
}
|
|
__set_current_state(TASK_INTERRUPTIBLE);
|
|
spin_unlock_bh(&p->fp_work_lock);
|
|
}
|
|
__set_current_state(TASK_RUNNING);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
|
|
{
|
|
struct fc_host_statistics *bnx2fc_stats;
|
|
struct fc_lport *lport = shost_priv(shost);
|
|
struct fcoe_port *port = lport_priv(lport);
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
struct bnx2fc_hba *hba = interface->hba;
|
|
struct fcoe_statistics_params *fw_stats;
|
|
int rc = 0;
|
|
|
|
fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
|
|
if (!fw_stats)
|
|
return NULL;
|
|
|
|
bnx2fc_stats = fc_get_host_stats(shost);
|
|
|
|
init_completion(&hba->stat_req_done);
|
|
if (bnx2fc_send_stat_req(hba))
|
|
return bnx2fc_stats;
|
|
rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
|
|
if (!rc) {
|
|
BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
|
|
return bnx2fc_stats;
|
|
}
|
|
BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
|
|
bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
|
|
BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
|
|
bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
|
|
BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
|
|
bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
|
|
BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
|
|
bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
|
|
BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
|
|
bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
|
|
|
|
bnx2fc_stats->dumped_frames = 0;
|
|
bnx2fc_stats->lip_count = 0;
|
|
bnx2fc_stats->nos_count = 0;
|
|
bnx2fc_stats->loss_of_sync_count = 0;
|
|
bnx2fc_stats->loss_of_signal_count = 0;
|
|
bnx2fc_stats->prim_seq_protocol_err_count = 0;
|
|
|
|
memcpy(&hba->prev_stats, hba->stats_buffer,
|
|
sizeof(struct fcoe_statistics_params));
|
|
return bnx2fc_stats;
|
|
}
|
|
|
|
static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
|
|
{
|
|
struct fcoe_port *port = lport_priv(lport);
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
struct bnx2fc_hba *hba = interface->hba;
|
|
struct Scsi_Host *shost = lport->host;
|
|
int rc = 0;
|
|
|
|
shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
|
|
shost->max_lun = BNX2FC_MAX_LUN;
|
|
shost->max_id = BNX2FC_MAX_FCP_TGT;
|
|
shost->max_channel = 0;
|
|
if (lport->vport)
|
|
shost->transportt = bnx2fc_vport_xport_template;
|
|
else
|
|
shost->transportt = bnx2fc_transport_template;
|
|
|
|
/* Add the new host to SCSI-ml */
|
|
rc = scsi_add_host(lport->host, dev);
|
|
if (rc) {
|
|
printk(KERN_ERR PFX "Error on scsi_add_host\n");
|
|
return rc;
|
|
}
|
|
if (!lport->vport)
|
|
fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
|
|
snprintf(fc_host_symbolic_name(lport->host), 256,
|
|
"%s (Broadcom %s) v%s over %s",
|
|
BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
|
|
interface->netdev->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bnx2fc_link_ok(struct fc_lport *lport)
|
|
{
|
|
struct fcoe_port *port = lport_priv(lport);
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
struct bnx2fc_hba *hba = interface->hba;
|
|
struct net_device *dev = hba->phys_dev;
|
|
int rc = 0;
|
|
|
|
if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
|
|
clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
|
|
else {
|
|
set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
|
|
rc = -1;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_get_link_state - get network link state
|
|
*
|
|
* @hba: adapter instance pointer
|
|
*
|
|
* updates adapter structure flag based on netdev state
|
|
*/
|
|
void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
|
|
{
|
|
if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
|
|
set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
|
|
else
|
|
clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
|
|
}
|
|
|
|
static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
|
|
{
|
|
struct bnx2fc_hba *hba;
|
|
struct bnx2fc_interface *interface;
|
|
struct fcoe_ctlr *ctlr;
|
|
struct fcoe_port *port;
|
|
u64 wwnn, wwpn;
|
|
|
|
port = lport_priv(lport);
|
|
interface = port->priv;
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
hba = interface->hba;
|
|
|
|
/* require support for get_pauseparam ethtool op. */
|
|
if (!hba->phys_dev->ethtool_ops ||
|
|
!hba->phys_dev->ethtool_ops->get_pauseparam)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (fc_set_mfs(lport, BNX2FC_MFS))
|
|
return -EINVAL;
|
|
|
|
skb_queue_head_init(&port->fcoe_pending_queue);
|
|
port->fcoe_pending_queue_active = 0;
|
|
setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
|
|
|
|
fcoe_link_speed_update(lport);
|
|
|
|
if (!lport->vport) {
|
|
if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
|
|
wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
|
|
1, 0);
|
|
BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
|
|
fc_set_wwnn(lport, wwnn);
|
|
|
|
if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
|
|
wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
|
|
2, 0);
|
|
|
|
BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
|
|
fc_set_wwpn(lport, wwpn);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void bnx2fc_destroy_timer(unsigned long data)
|
|
{
|
|
struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
|
|
|
|
printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
|
|
"Destroy compl not received!!\n");
|
|
set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
|
|
wake_up_interruptible(&hba->destroy_wait);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_indicate_netevent - Generic netdev event handler
|
|
*
|
|
* @context: adapter structure pointer
|
|
* @event: event type
|
|
* @vlan_id: vlan id - associated vlan id with this event
|
|
*
|
|
* Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
|
|
* NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
|
|
*/
|
|
static void bnx2fc_indicate_netevent(void *context, unsigned long event,
|
|
u16 vlan_id)
|
|
{
|
|
struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
|
|
struct fcoe_ctlr_device *cdev;
|
|
struct fc_lport *lport;
|
|
struct fc_lport *vport;
|
|
struct bnx2fc_interface *interface, *tmp;
|
|
struct fcoe_ctlr *ctlr;
|
|
int wait_for_upload = 0;
|
|
u32 link_possible = 1;
|
|
|
|
if (vlan_id != 0 && event != NETDEV_UNREGISTER)
|
|
return;
|
|
|
|
switch (event) {
|
|
case NETDEV_UP:
|
|
if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
|
|
printk(KERN_ERR "indicate_netevent: "\
|
|
"hba is not UP!!\n");
|
|
break;
|
|
|
|
case NETDEV_DOWN:
|
|
clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
|
|
clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
|
|
link_possible = 0;
|
|
break;
|
|
|
|
case NETDEV_GOING_DOWN:
|
|
set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
|
|
link_possible = 0;
|
|
break;
|
|
|
|
case NETDEV_CHANGE:
|
|
break;
|
|
|
|
case NETDEV_UNREGISTER:
|
|
if (!vlan_id)
|
|
return;
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
list_for_each_entry_safe(interface, tmp, &if_list, list) {
|
|
if (interface->hba == hba &&
|
|
interface->vlan_id == (vlan_id & VLAN_VID_MASK))
|
|
__bnx2fc_destroy(interface);
|
|
}
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
|
|
/* Ensure ALL destroy work has been completed before return */
|
|
flush_workqueue(bnx2fc_wq);
|
|
return;
|
|
|
|
default:
|
|
printk(KERN_ERR PFX "Unknown netevent %ld", event);
|
|
return;
|
|
}
|
|
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
list_for_each_entry(interface, &if_list, list) {
|
|
|
|
if (interface->hba != hba)
|
|
continue;
|
|
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
lport = ctlr->lp;
|
|
BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
|
|
interface->netdev->name, event);
|
|
|
|
fcoe_link_speed_update(lport);
|
|
|
|
cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
|
|
|
|
if (link_possible && !bnx2fc_link_ok(lport)) {
|
|
switch (cdev->enabled) {
|
|
case FCOE_CTLR_DISABLED:
|
|
pr_info("Link up while interface is disabled.\n");
|
|
break;
|
|
case FCOE_CTLR_ENABLED:
|
|
case FCOE_CTLR_UNUSED:
|
|
/* Reset max recv frame size to default */
|
|
fc_set_mfs(lport, BNX2FC_MFS);
|
|
/*
|
|
* ctlr link up will only be handled during
|
|
* enable to avoid sending discovery
|
|
* solicitation on a stale vlan
|
|
*/
|
|
if (interface->enabled)
|
|
fcoe_ctlr_link_up(ctlr);
|
|
};
|
|
} else if (fcoe_ctlr_link_down(ctlr)) {
|
|
switch (cdev->enabled) {
|
|
case FCOE_CTLR_DISABLED:
|
|
pr_info("Link down while interface is disabled.\n");
|
|
break;
|
|
case FCOE_CTLR_ENABLED:
|
|
case FCOE_CTLR_UNUSED:
|
|
mutex_lock(&lport->lp_mutex);
|
|
list_for_each_entry(vport, &lport->vports, list)
|
|
fc_host_port_type(vport->host) =
|
|
FC_PORTTYPE_UNKNOWN;
|
|
mutex_unlock(&lport->lp_mutex);
|
|
fc_host_port_type(lport->host) =
|
|
FC_PORTTYPE_UNKNOWN;
|
|
per_cpu_ptr(lport->stats,
|
|
get_cpu())->LinkFailureCount++;
|
|
put_cpu();
|
|
fcoe_clean_pending_queue(lport);
|
|
wait_for_upload = 1;
|
|
};
|
|
}
|
|
}
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
|
|
if (wait_for_upload) {
|
|
clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
|
|
init_waitqueue_head(&hba->shutdown_wait);
|
|
BNX2FC_MISC_DBG("indicate_netevent "
|
|
"num_ofld_sess = %d\n",
|
|
hba->num_ofld_sess);
|
|
hba->wait_for_link_down = 1;
|
|
wait_event_interruptible(hba->shutdown_wait,
|
|
(hba->num_ofld_sess == 0));
|
|
BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
|
|
hba->num_ofld_sess);
|
|
hba->wait_for_link_down = 0;
|
|
|
|
if (signal_pending(current))
|
|
flush_signals(current);
|
|
}
|
|
}
|
|
|
|
static int bnx2fc_libfc_config(struct fc_lport *lport)
|
|
{
|
|
|
|
/* Set the function pointers set by bnx2fc driver */
|
|
memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
|
|
sizeof(struct libfc_function_template));
|
|
fc_elsct_init(lport);
|
|
fc_exch_init(lport);
|
|
fc_rport_init(lport);
|
|
fc_disc_init(lport);
|
|
fc_disc_config(lport, lport);
|
|
return 0;
|
|
}
|
|
|
|
static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
|
|
{
|
|
int fcoe_min_xid, fcoe_max_xid;
|
|
|
|
fcoe_min_xid = hba->max_xid + 1;
|
|
if (nr_cpu_ids <= 2)
|
|
fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
|
|
else
|
|
fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
|
|
if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
|
|
fcoe_max_xid, NULL)) {
|
|
printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bnx2fc_lport_config(struct fc_lport *lport)
|
|
{
|
|
lport->link_up = 0;
|
|
lport->qfull = 0;
|
|
lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
|
|
lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
|
|
lport->e_d_tov = 2 * 1000;
|
|
lport->r_a_tov = 10 * 1000;
|
|
|
|
lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
|
|
FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
|
|
lport->does_npiv = 1;
|
|
|
|
memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
|
|
lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
|
|
|
|
/* alloc stats structure */
|
|
if (fc_lport_init_stats(lport))
|
|
return -ENOMEM;
|
|
|
|
/* Finish fc_lport configuration */
|
|
fc_lport_config(lport);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_fip_recv - handle a received FIP frame.
|
|
*
|
|
* @skb: the received skb
|
|
* @dev: associated &net_device
|
|
* @ptype: the &packet_type structure which was used to register this handler.
|
|
* @orig_dev: original receive &net_device, in case @ dev is a bond.
|
|
*
|
|
* Returns: 0 for success
|
|
*/
|
|
static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
|
|
struct packet_type *ptype,
|
|
struct net_device *orig_dev)
|
|
{
|
|
struct bnx2fc_interface *interface;
|
|
struct fcoe_ctlr *ctlr;
|
|
interface = container_of(ptype, struct bnx2fc_interface,
|
|
fip_packet_type);
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
fcoe_ctlr_recv(ctlr, skb);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_update_src_mac - Update Ethernet MAC filters.
|
|
*
|
|
* @fip: FCoE controller.
|
|
* @old: Unicast MAC address to delete if the MAC is non-zero.
|
|
* @new: Unicast MAC address to add.
|
|
*
|
|
* Remove any previously-set unicast MAC filter.
|
|
* Add secondary FCoE MAC address filter for our OUI.
|
|
*/
|
|
static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
|
|
{
|
|
struct fcoe_port *port = lport_priv(lport);
|
|
|
|
memcpy(port->data_src_addr, addr, ETH_ALEN);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_get_src_mac - return the ethernet source address for an lport
|
|
*
|
|
* @lport: libfc port
|
|
*/
|
|
static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
|
|
{
|
|
struct fcoe_port *port;
|
|
|
|
port = (struct fcoe_port *)lport_priv(lport);
|
|
return port->data_src_addr;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
|
|
*
|
|
* @fip: FCoE controller.
|
|
* @skb: FIP Packet.
|
|
*/
|
|
static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
|
|
{
|
|
skb->dev = bnx2fc_from_ctlr(fip)->netdev;
|
|
dev_queue_xmit(skb);
|
|
}
|
|
|
|
static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
|
|
{
|
|
struct Scsi_Host *shost = vport_to_shost(vport);
|
|
struct fc_lport *n_port = shost_priv(shost);
|
|
struct fcoe_port *port = lport_priv(n_port);
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
struct net_device *netdev = interface->netdev;
|
|
struct fc_lport *vn_port;
|
|
int rc;
|
|
char buf[32];
|
|
|
|
rc = fcoe_validate_vport_create(vport);
|
|
if (rc) {
|
|
fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
|
|
printk(KERN_ERR PFX "Failed to create vport, "
|
|
"WWPN (0x%s) already exists\n",
|
|
buf);
|
|
return rc;
|
|
}
|
|
|
|
if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
|
|
printk(KERN_ERR PFX "vn ports cannot be created on"
|
|
"this interface\n");
|
|
return -EIO;
|
|
}
|
|
rtnl_lock();
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
rtnl_unlock();
|
|
|
|
if (IS_ERR(vn_port)) {
|
|
printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
|
|
netdev->name);
|
|
return -EIO;
|
|
}
|
|
|
|
if (disabled) {
|
|
fc_vport_set_state(vport, FC_VPORT_DISABLED);
|
|
} else {
|
|
vn_port->boot_time = jiffies;
|
|
fc_lport_init(vn_port);
|
|
fc_fabric_login(vn_port);
|
|
fc_vport_setlink(vn_port);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
|
|
{
|
|
struct bnx2fc_lport *blport, *tmp;
|
|
|
|
spin_lock_bh(&hba->hba_lock);
|
|
list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
|
|
if (blport->lport == lport) {
|
|
list_del(&blport->list);
|
|
kfree(blport);
|
|
}
|
|
}
|
|
spin_unlock_bh(&hba->hba_lock);
|
|
}
|
|
|
|
static int bnx2fc_vport_destroy(struct fc_vport *vport)
|
|
{
|
|
struct Scsi_Host *shost = vport_to_shost(vport);
|
|
struct fc_lport *n_port = shost_priv(shost);
|
|
struct fc_lport *vn_port = vport->dd_data;
|
|
struct fcoe_port *port = lport_priv(vn_port);
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
struct fc_lport *v_port;
|
|
bool found = false;
|
|
|
|
mutex_lock(&n_port->lp_mutex);
|
|
list_for_each_entry(v_port, &n_port->vports, list)
|
|
if (v_port->vport == vport) {
|
|
found = true;
|
|
break;
|
|
}
|
|
|
|
if (!found) {
|
|
mutex_unlock(&n_port->lp_mutex);
|
|
return -ENOENT;
|
|
}
|
|
list_del(&vn_port->list);
|
|
mutex_unlock(&n_port->lp_mutex);
|
|
bnx2fc_free_vport(interface->hba, port->lport);
|
|
bnx2fc_port_shutdown(port->lport);
|
|
bnx2fc_interface_put(interface);
|
|
queue_work(bnx2fc_wq, &port->destroy_work);
|
|
return 0;
|
|
}
|
|
|
|
static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
|
|
{
|
|
struct fc_lport *lport = vport->dd_data;
|
|
|
|
if (disable) {
|
|
fc_vport_set_state(vport, FC_VPORT_DISABLED);
|
|
fc_fabric_logoff(lport);
|
|
} else {
|
|
lport->boot_time = jiffies;
|
|
fc_fabric_login(lport);
|
|
fc_vport_setlink(lport);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
|
|
{
|
|
struct net_device *netdev = interface->netdev;
|
|
struct net_device *physdev = interface->hba->phys_dev;
|
|
struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
|
|
struct netdev_hw_addr *ha;
|
|
int sel_san_mac = 0;
|
|
|
|
/* setup Source MAC Address */
|
|
rcu_read_lock();
|
|
for_each_dev_addr(physdev, ha) {
|
|
BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
|
|
ha->type);
|
|
printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
|
|
ha->addr[1], ha->addr[2], ha->addr[3],
|
|
ha->addr[4], ha->addr[5]);
|
|
|
|
if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
|
|
(is_valid_ether_addr(ha->addr))) {
|
|
memcpy(ctlr->ctl_src_addr, ha->addr,
|
|
ETH_ALEN);
|
|
sel_san_mac = 1;
|
|
BNX2FC_MISC_DBG("Found SAN MAC\n");
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
if (!sel_san_mac)
|
|
return -ENODEV;
|
|
|
|
interface->fip_packet_type.func = bnx2fc_fip_recv;
|
|
interface->fip_packet_type.type = htons(ETH_P_FIP);
|
|
interface->fip_packet_type.dev = netdev;
|
|
dev_add_pack(&interface->fip_packet_type);
|
|
|
|
interface->fcoe_packet_type.func = bnx2fc_rcv;
|
|
interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
|
|
interface->fcoe_packet_type.dev = netdev;
|
|
dev_add_pack(&interface->fcoe_packet_type);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bnx2fc_attach_transport(void)
|
|
{
|
|
bnx2fc_transport_template =
|
|
fc_attach_transport(&bnx2fc_transport_function);
|
|
|
|
if (bnx2fc_transport_template == NULL) {
|
|
printk(KERN_ERR PFX "Failed to attach FC transport\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
bnx2fc_vport_xport_template =
|
|
fc_attach_transport(&bnx2fc_vport_xport_function);
|
|
if (bnx2fc_vport_xport_template == NULL) {
|
|
printk(KERN_ERR PFX
|
|
"Failed to attach FC transport for vport\n");
|
|
fc_release_transport(bnx2fc_transport_template);
|
|
bnx2fc_transport_template = NULL;
|
|
return -ENODEV;
|
|
}
|
|
return 0;
|
|
}
|
|
static void bnx2fc_release_transport(void)
|
|
{
|
|
fc_release_transport(bnx2fc_transport_template);
|
|
fc_release_transport(bnx2fc_vport_xport_template);
|
|
bnx2fc_transport_template = NULL;
|
|
bnx2fc_vport_xport_template = NULL;
|
|
}
|
|
|
|
static void bnx2fc_interface_release(struct kref *kref)
|
|
{
|
|
struct fcoe_ctlr_device *ctlr_dev;
|
|
struct bnx2fc_interface *interface;
|
|
struct fcoe_ctlr *ctlr;
|
|
struct net_device *netdev;
|
|
|
|
interface = container_of(kref, struct bnx2fc_interface, kref);
|
|
BNX2FC_MISC_DBG("Interface is being released\n");
|
|
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
|
|
netdev = interface->netdev;
|
|
|
|
/* tear-down FIP controller */
|
|
if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
|
|
fcoe_ctlr_destroy(ctlr);
|
|
|
|
fcoe_ctlr_device_delete(ctlr_dev);
|
|
|
|
dev_put(netdev);
|
|
module_put(THIS_MODULE);
|
|
}
|
|
|
|
static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
|
|
{
|
|
kref_get(&interface->kref);
|
|
}
|
|
|
|
static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
|
|
{
|
|
kref_put(&interface->kref, bnx2fc_interface_release);
|
|
}
|
|
static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
|
|
{
|
|
/* Free the command manager */
|
|
if (hba->cmd_mgr) {
|
|
bnx2fc_cmd_mgr_free(hba->cmd_mgr);
|
|
hba->cmd_mgr = NULL;
|
|
}
|
|
kfree(hba->tgt_ofld_list);
|
|
bnx2fc_unbind_pcidev(hba);
|
|
kfree(hba);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_hba_create - create a new bnx2fc hba
|
|
*
|
|
* @cnic: pointer to cnic device
|
|
*
|
|
* Creates a new FCoE hba on the given device.
|
|
*
|
|
*/
|
|
static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
|
|
{
|
|
struct bnx2fc_hba *hba;
|
|
struct fcoe_capabilities *fcoe_cap;
|
|
int rc;
|
|
|
|
hba = kzalloc(sizeof(*hba), GFP_KERNEL);
|
|
if (!hba) {
|
|
printk(KERN_ERR PFX "Unable to allocate hba structure\n");
|
|
return NULL;
|
|
}
|
|
spin_lock_init(&hba->hba_lock);
|
|
mutex_init(&hba->hba_mutex);
|
|
|
|
hba->cnic = cnic;
|
|
|
|
hba->max_tasks = cnic->max_fcoe_exchanges;
|
|
hba->elstm_xids = (hba->max_tasks / 2);
|
|
hba->max_outstanding_cmds = hba->elstm_xids;
|
|
hba->max_xid = (hba->max_tasks - 1);
|
|
|
|
rc = bnx2fc_bind_pcidev(hba);
|
|
if (rc) {
|
|
printk(KERN_ERR PFX "create_adapter: bind error\n");
|
|
goto bind_err;
|
|
}
|
|
hba->phys_dev = cnic->netdev;
|
|
hba->next_conn_id = 0;
|
|
|
|
hba->tgt_ofld_list =
|
|
kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS,
|
|
GFP_KERNEL);
|
|
if (!hba->tgt_ofld_list) {
|
|
printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
|
|
goto tgtofld_err;
|
|
}
|
|
|
|
hba->num_ofld_sess = 0;
|
|
|
|
hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
|
|
if (!hba->cmd_mgr) {
|
|
printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
|
|
goto cmgr_err;
|
|
}
|
|
fcoe_cap = &hba->fcoe_cap;
|
|
|
|
fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
|
|
FCOE_IOS_PER_CONNECTION_SHIFT;
|
|
fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
|
|
FCOE_LOGINS_PER_PORT_SHIFT;
|
|
fcoe_cap->capability2 = hba->max_outstanding_cmds <<
|
|
FCOE_NUMBER_OF_EXCHANGES_SHIFT;
|
|
fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
|
|
FCOE_NPIV_WWN_PER_PORT_SHIFT;
|
|
fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
|
|
FCOE_TARGETS_SUPPORTED_SHIFT;
|
|
fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
|
|
FCOE_OUTSTANDING_COMMANDS_SHIFT;
|
|
fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
|
|
|
|
init_waitqueue_head(&hba->shutdown_wait);
|
|
init_waitqueue_head(&hba->destroy_wait);
|
|
INIT_LIST_HEAD(&hba->vports);
|
|
|
|
return hba;
|
|
|
|
cmgr_err:
|
|
kfree(hba->tgt_ofld_list);
|
|
tgtofld_err:
|
|
bnx2fc_unbind_pcidev(hba);
|
|
bind_err:
|
|
kfree(hba);
|
|
return NULL;
|
|
}
|
|
|
|
struct bnx2fc_interface *bnx2fc_interface_create(struct bnx2fc_hba *hba,
|
|
struct net_device *netdev,
|
|
enum fip_state fip_mode)
|
|
{
|
|
struct fcoe_ctlr_device *ctlr_dev;
|
|
struct bnx2fc_interface *interface;
|
|
struct fcoe_ctlr *ctlr;
|
|
int size;
|
|
int rc = 0;
|
|
|
|
size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
|
|
ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
|
|
size);
|
|
if (!ctlr_dev) {
|
|
printk(KERN_ERR PFX "Unable to allocate interface structure\n");
|
|
return NULL;
|
|
}
|
|
ctlr = fcoe_ctlr_device_priv(ctlr_dev);
|
|
ctlr->cdev = ctlr_dev;
|
|
interface = fcoe_ctlr_priv(ctlr);
|
|
dev_hold(netdev);
|
|
kref_init(&interface->kref);
|
|
interface->hba = hba;
|
|
interface->netdev = netdev;
|
|
|
|
/* Initialize FIP */
|
|
fcoe_ctlr_init(ctlr, fip_mode);
|
|
ctlr->send = bnx2fc_fip_send;
|
|
ctlr->update_mac = bnx2fc_update_src_mac;
|
|
ctlr->get_src_addr = bnx2fc_get_src_mac;
|
|
set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
|
|
|
|
rc = bnx2fc_interface_setup(interface);
|
|
if (!rc)
|
|
return interface;
|
|
|
|
fcoe_ctlr_destroy(ctlr);
|
|
dev_put(netdev);
|
|
fcoe_ctlr_device_delete(ctlr_dev);
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_if_create - Create FCoE instance on a given interface
|
|
*
|
|
* @interface: FCoE interface to create a local port on
|
|
* @parent: Device pointer to be the parent in sysfs for the SCSI host
|
|
* @npiv: Indicates if the port is vport or not
|
|
*
|
|
* Creates a fc_lport instance and a Scsi_Host instance and configure them.
|
|
*
|
|
* Returns: Allocated fc_lport or an error pointer
|
|
*/
|
|
static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
|
|
struct device *parent, int npiv)
|
|
{
|
|
struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
|
|
struct fc_lport *lport, *n_port;
|
|
struct fcoe_port *port;
|
|
struct Scsi_Host *shost;
|
|
struct fc_vport *vport = dev_to_vport(parent);
|
|
struct bnx2fc_lport *blport;
|
|
struct bnx2fc_hba *hba = interface->hba;
|
|
int rc = 0;
|
|
|
|
blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
|
|
if (!blport) {
|
|
BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* Allocate Scsi_Host structure */
|
|
bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
|
|
if (!npiv)
|
|
lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
|
|
else
|
|
lport = libfc_vport_create(vport, sizeof(*port));
|
|
|
|
if (!lport) {
|
|
printk(KERN_ERR PFX "could not allocate scsi host structure\n");
|
|
goto free_blport;
|
|
}
|
|
shost = lport->host;
|
|
port = lport_priv(lport);
|
|
port->lport = lport;
|
|
port->priv = interface;
|
|
port->get_netdev = bnx2fc_netdev;
|
|
INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
|
|
|
|
/* Configure fcoe_port */
|
|
rc = bnx2fc_lport_config(lport);
|
|
if (rc)
|
|
goto lp_config_err;
|
|
|
|
if (npiv) {
|
|
printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
|
|
vport->node_name, vport->port_name);
|
|
fc_set_wwnn(lport, vport->node_name);
|
|
fc_set_wwpn(lport, vport->port_name);
|
|
}
|
|
/* Configure netdev and networking properties of the lport */
|
|
rc = bnx2fc_net_config(lport, interface->netdev);
|
|
if (rc) {
|
|
printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
|
|
goto lp_config_err;
|
|
}
|
|
|
|
rc = bnx2fc_shost_config(lport, parent);
|
|
if (rc) {
|
|
printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
|
|
interface->netdev->name);
|
|
goto lp_config_err;
|
|
}
|
|
|
|
/* Initialize the libfc library */
|
|
rc = bnx2fc_libfc_config(lport);
|
|
if (rc) {
|
|
printk(KERN_ERR PFX "Couldnt configure libfc\n");
|
|
goto shost_err;
|
|
}
|
|
fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
|
|
|
|
/* Allocate exchange manager */
|
|
if (!npiv)
|
|
rc = bnx2fc_em_config(lport, hba);
|
|
else {
|
|
shost = vport_to_shost(vport);
|
|
n_port = shost_priv(shost);
|
|
rc = fc_exch_mgr_list_clone(n_port, lport);
|
|
}
|
|
|
|
if (rc) {
|
|
printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
|
|
goto shost_err;
|
|
}
|
|
|
|
bnx2fc_interface_get(interface);
|
|
|
|
spin_lock_bh(&hba->hba_lock);
|
|
blport->lport = lport;
|
|
list_add_tail(&blport->list, &hba->vports);
|
|
spin_unlock_bh(&hba->hba_lock);
|
|
|
|
return lport;
|
|
|
|
shost_err:
|
|
scsi_remove_host(shost);
|
|
lp_config_err:
|
|
scsi_host_put(lport->host);
|
|
free_blport:
|
|
kfree(blport);
|
|
return NULL;
|
|
}
|
|
|
|
static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
|
|
{
|
|
/* Dont listen for Ethernet packets anymore */
|
|
__dev_remove_pack(&interface->fcoe_packet_type);
|
|
__dev_remove_pack(&interface->fip_packet_type);
|
|
synchronize_net();
|
|
}
|
|
|
|
static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
|
|
{
|
|
struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
|
|
struct fc_lport *lport = ctlr->lp;
|
|
struct fcoe_port *port = lport_priv(lport);
|
|
struct bnx2fc_hba *hba = interface->hba;
|
|
|
|
/* Stop the transmit retry timer */
|
|
del_timer_sync(&port->timer);
|
|
|
|
/* Free existing transmit skbs */
|
|
fcoe_clean_pending_queue(lport);
|
|
|
|
bnx2fc_net_cleanup(interface);
|
|
|
|
bnx2fc_free_vport(hba, lport);
|
|
}
|
|
|
|
static void bnx2fc_if_destroy(struct fc_lport *lport)
|
|
{
|
|
|
|
/* Free queued packets for the receive thread */
|
|
bnx2fc_clean_rx_queue(lport);
|
|
|
|
/* Detach from scsi-ml */
|
|
fc_remove_host(lport->host);
|
|
scsi_remove_host(lport->host);
|
|
|
|
/*
|
|
* Note that only the physical lport will have the exchange manager.
|
|
* for vports, this function is NOP
|
|
*/
|
|
fc_exch_mgr_free(lport);
|
|
|
|
/* Free memory used by statistical counters */
|
|
fc_lport_free_stats(lport);
|
|
|
|
/* Release Scsi_Host */
|
|
scsi_host_put(lport->host);
|
|
}
|
|
|
|
static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
|
|
{
|
|
struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
|
|
struct fc_lport *lport = ctlr->lp;
|
|
struct fcoe_port *port = lport_priv(lport);
|
|
|
|
bnx2fc_interface_cleanup(interface);
|
|
bnx2fc_stop(interface);
|
|
list_del(&interface->list);
|
|
bnx2fc_interface_put(interface);
|
|
queue_work(bnx2fc_wq, &port->destroy_work);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_destroy - Destroy a bnx2fc FCoE interface
|
|
*
|
|
* @buffer: The name of the Ethernet interface to be destroyed
|
|
* @kp: The associated kernel parameter
|
|
*
|
|
* Called from sysfs.
|
|
*
|
|
* Returns: 0 for success
|
|
*/
|
|
static int bnx2fc_destroy(struct net_device *netdev)
|
|
{
|
|
struct bnx2fc_interface *interface = NULL;
|
|
struct workqueue_struct *timer_work_queue;
|
|
struct fcoe_ctlr *ctlr;
|
|
int rc = 0;
|
|
|
|
rtnl_lock();
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
|
|
interface = bnx2fc_interface_lookup(netdev);
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
if (!interface || !ctlr->lp) {
|
|
rc = -ENODEV;
|
|
printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
|
|
goto netdev_err;
|
|
}
|
|
|
|
timer_work_queue = interface->timer_work_queue;
|
|
__bnx2fc_destroy(interface);
|
|
destroy_workqueue(timer_work_queue);
|
|
|
|
netdev_err:
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
rtnl_unlock();
|
|
return rc;
|
|
}
|
|
|
|
static void bnx2fc_destroy_work(struct work_struct *work)
|
|
{
|
|
struct fcoe_port *port;
|
|
struct fc_lport *lport;
|
|
|
|
port = container_of(work, struct fcoe_port, destroy_work);
|
|
lport = port->lport;
|
|
|
|
BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
|
|
|
|
bnx2fc_if_destroy(lport);
|
|
}
|
|
|
|
static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
|
|
{
|
|
bnx2fc_free_fw_resc(hba);
|
|
bnx2fc_free_task_ctx(hba);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
|
|
* pci structure
|
|
*
|
|
* @hba: Adapter instance
|
|
*/
|
|
static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
|
|
{
|
|
if (bnx2fc_setup_task_ctx(hba))
|
|
goto mem_err;
|
|
|
|
if (bnx2fc_setup_fw_resc(hba))
|
|
goto mem_err;
|
|
|
|
return 0;
|
|
mem_err:
|
|
bnx2fc_unbind_adapter_devices(hba);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
|
|
{
|
|
struct cnic_dev *cnic;
|
|
struct pci_dev *pdev;
|
|
|
|
if (!hba->cnic) {
|
|
printk(KERN_ERR PFX "cnic is NULL\n");
|
|
return -ENODEV;
|
|
}
|
|
cnic = hba->cnic;
|
|
pdev = hba->pcidev = cnic->pcidev;
|
|
if (!hba->pcidev)
|
|
return -ENODEV;
|
|
|
|
switch (pdev->device) {
|
|
case PCI_DEVICE_ID_NX2_57710:
|
|
strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
|
|
break;
|
|
case PCI_DEVICE_ID_NX2_57711:
|
|
strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
|
|
break;
|
|
case PCI_DEVICE_ID_NX2_57712:
|
|
case PCI_DEVICE_ID_NX2_57712_MF:
|
|
case PCI_DEVICE_ID_NX2_57712_VF:
|
|
strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
|
|
break;
|
|
case PCI_DEVICE_ID_NX2_57800:
|
|
case PCI_DEVICE_ID_NX2_57800_MF:
|
|
case PCI_DEVICE_ID_NX2_57800_VF:
|
|
strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
|
|
break;
|
|
case PCI_DEVICE_ID_NX2_57810:
|
|
case PCI_DEVICE_ID_NX2_57810_MF:
|
|
case PCI_DEVICE_ID_NX2_57810_VF:
|
|
strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
|
|
break;
|
|
case PCI_DEVICE_ID_NX2_57840:
|
|
case PCI_DEVICE_ID_NX2_57840_MF:
|
|
case PCI_DEVICE_ID_NX2_57840_VF:
|
|
case PCI_DEVICE_ID_NX2_57840_2_20:
|
|
case PCI_DEVICE_ID_NX2_57840_4_10:
|
|
strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
|
|
break;
|
|
default:
|
|
pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
|
|
break;
|
|
}
|
|
pci_dev_get(hba->pcidev);
|
|
return 0;
|
|
}
|
|
|
|
static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
|
|
{
|
|
if (hba->pcidev) {
|
|
hba->chip_num[0] = '\0';
|
|
pci_dev_put(hba->pcidev);
|
|
}
|
|
hba->pcidev = NULL;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
|
|
*
|
|
* @handle: transport handle pointing to adapter struture
|
|
*/
|
|
static int bnx2fc_ulp_get_stats(void *handle)
|
|
{
|
|
struct bnx2fc_hba *hba = handle;
|
|
struct cnic_dev *cnic;
|
|
struct fcoe_stats_info *stats_addr;
|
|
|
|
if (!hba)
|
|
return -EINVAL;
|
|
|
|
cnic = hba->cnic;
|
|
stats_addr = &cnic->stats_addr->fcoe_stat;
|
|
if (!stats_addr)
|
|
return -EINVAL;
|
|
|
|
strncpy(stats_addr->version, BNX2FC_VERSION,
|
|
sizeof(stats_addr->version));
|
|
stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
|
|
stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
|
|
*
|
|
* @handle: transport handle pointing to adapter structure
|
|
*
|
|
* This function maps adapter structure to pcidev structure and initiates
|
|
* firmware handshake to enable/initialize on-chip FCoE components.
|
|
* This bnx2fc - cnic interface api callback is used after following
|
|
* conditions are met -
|
|
* a) underlying network interface is up (marked by event NETDEV_UP
|
|
* from netdev
|
|
* b) bnx2fc adatper structure is registered.
|
|
*/
|
|
static void bnx2fc_ulp_start(void *handle)
|
|
{
|
|
struct bnx2fc_hba *hba = handle;
|
|
struct bnx2fc_interface *interface;
|
|
struct fcoe_ctlr *ctlr;
|
|
struct fc_lport *lport;
|
|
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
|
|
if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
|
|
bnx2fc_fw_init(hba);
|
|
|
|
BNX2FC_MISC_DBG("bnx2fc started.\n");
|
|
|
|
list_for_each_entry(interface, &if_list, list) {
|
|
if (interface->hba == hba) {
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
lport = ctlr->lp;
|
|
/* Kick off Fabric discovery*/
|
|
printk(KERN_ERR PFX "ulp_init: start discovery\n");
|
|
lport->tt.frame_send = bnx2fc_xmit;
|
|
bnx2fc_start_disc(interface);
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
}
|
|
|
|
static void bnx2fc_port_shutdown(struct fc_lport *lport)
|
|
{
|
|
BNX2FC_MISC_DBG("Entered %s\n", __func__);
|
|
fc_fabric_logoff(lport);
|
|
fc_lport_destroy(lport);
|
|
}
|
|
|
|
static void bnx2fc_stop(struct bnx2fc_interface *interface)
|
|
{
|
|
struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
|
|
struct fc_lport *lport;
|
|
struct fc_lport *vport;
|
|
|
|
if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
|
|
return;
|
|
|
|
lport = ctlr->lp;
|
|
bnx2fc_port_shutdown(lport);
|
|
|
|
mutex_lock(&lport->lp_mutex);
|
|
list_for_each_entry(vport, &lport->vports, list)
|
|
fc_host_port_type(vport->host) =
|
|
FC_PORTTYPE_UNKNOWN;
|
|
mutex_unlock(&lport->lp_mutex);
|
|
fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
|
|
fcoe_ctlr_link_down(ctlr);
|
|
fcoe_clean_pending_queue(lport);
|
|
}
|
|
|
|
static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
|
|
{
|
|
#define BNX2FC_INIT_POLL_TIME (1000 / HZ)
|
|
int rc = -1;
|
|
int i = HZ;
|
|
|
|
rc = bnx2fc_bind_adapter_devices(hba);
|
|
if (rc) {
|
|
printk(KERN_ALERT PFX
|
|
"bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
|
|
goto err_out;
|
|
}
|
|
|
|
rc = bnx2fc_send_fw_fcoe_init_msg(hba);
|
|
if (rc) {
|
|
printk(KERN_ALERT PFX
|
|
"bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
|
|
goto err_unbind;
|
|
}
|
|
|
|
/*
|
|
* Wait until the adapter init message is complete, and adapter
|
|
* state is UP.
|
|
*/
|
|
while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
|
|
msleep(BNX2FC_INIT_POLL_TIME);
|
|
|
|
if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
|
|
printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
|
|
"Ignoring...\n",
|
|
hba->cnic->netdev->name);
|
|
rc = -1;
|
|
goto err_unbind;
|
|
}
|
|
|
|
|
|
set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
|
|
return 0;
|
|
|
|
err_unbind:
|
|
bnx2fc_unbind_adapter_devices(hba);
|
|
err_out:
|
|
return rc;
|
|
}
|
|
|
|
static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
|
|
{
|
|
if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
|
|
if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
|
|
init_timer(&hba->destroy_timer);
|
|
hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
|
|
jiffies;
|
|
hba->destroy_timer.function = bnx2fc_destroy_timer;
|
|
hba->destroy_timer.data = (unsigned long)hba;
|
|
add_timer(&hba->destroy_timer);
|
|
wait_event_interruptible(hba->destroy_wait,
|
|
test_bit(BNX2FC_FLAG_DESTROY_CMPL,
|
|
&hba->flags));
|
|
clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
|
|
/* This should never happen */
|
|
if (signal_pending(current))
|
|
flush_signals(current);
|
|
|
|
del_timer_sync(&hba->destroy_timer);
|
|
}
|
|
bnx2fc_unbind_adapter_devices(hba);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
|
|
*
|
|
* @handle: transport handle pointing to adapter structure
|
|
*
|
|
* Driver checks if adapter is already in shutdown mode, if not start
|
|
* the shutdown process.
|
|
*/
|
|
static void bnx2fc_ulp_stop(void *handle)
|
|
{
|
|
struct bnx2fc_hba *hba = handle;
|
|
struct bnx2fc_interface *interface;
|
|
|
|
printk(KERN_ERR "ULP_STOP\n");
|
|
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
|
|
goto exit;
|
|
list_for_each_entry(interface, &if_list, list) {
|
|
if (interface->hba == hba)
|
|
bnx2fc_stop(interface);
|
|
}
|
|
BUG_ON(hba->num_ofld_sess != 0);
|
|
|
|
mutex_lock(&hba->hba_mutex);
|
|
clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
|
|
clear_bit(ADAPTER_STATE_GOING_DOWN,
|
|
&hba->adapter_state);
|
|
|
|
clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
|
|
mutex_unlock(&hba->hba_mutex);
|
|
|
|
bnx2fc_fw_destroy(hba);
|
|
exit:
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
}
|
|
|
|
static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
|
|
{
|
|
struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
|
|
struct fc_lport *lport;
|
|
int wait_cnt = 0;
|
|
|
|
BNX2FC_MISC_DBG("Entered %s\n", __func__);
|
|
/* Kick off FIP/FLOGI */
|
|
if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
|
|
printk(KERN_ERR PFX "Init not done yet\n");
|
|
return;
|
|
}
|
|
|
|
lport = ctlr->lp;
|
|
BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
|
|
|
|
if (!bnx2fc_link_ok(lport) && interface->enabled) {
|
|
BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
|
|
fcoe_ctlr_link_up(ctlr);
|
|
fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
|
|
set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
|
|
}
|
|
|
|
/* wait for the FCF to be selected before issuing FLOGI */
|
|
while (!ctlr->sel_fcf) {
|
|
msleep(250);
|
|
/* give up after 3 secs */
|
|
if (++wait_cnt > 12)
|
|
break;
|
|
}
|
|
|
|
/* Reset max receive frame size to default */
|
|
if (fc_set_mfs(lport, BNX2FC_MFS))
|
|
return;
|
|
|
|
fc_lport_init(lport);
|
|
fc_fabric_login(lport);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2fc_ulp_init - Initialize an adapter instance
|
|
*
|
|
* @dev : cnic device handle
|
|
* Called from cnic_register_driver() context to initialize all
|
|
* enumerated cnic devices. This routine allocates adapter structure
|
|
* and other device specific resources.
|
|
*/
|
|
static void bnx2fc_ulp_init(struct cnic_dev *dev)
|
|
{
|
|
struct bnx2fc_hba *hba;
|
|
int rc = 0;
|
|
|
|
BNX2FC_MISC_DBG("Entered %s\n", __func__);
|
|
/* bnx2fc works only when bnx2x is loaded */
|
|
if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
|
|
(dev->max_fcoe_conn == 0)) {
|
|
printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
|
|
" flags: %lx fcoe_conn: %d\n",
|
|
dev->netdev->name, dev->flags, dev->max_fcoe_conn);
|
|
return;
|
|
}
|
|
|
|
hba = bnx2fc_hba_create(dev);
|
|
if (!hba) {
|
|
printk(KERN_ERR PFX "hba initialization failed\n");
|
|
return;
|
|
}
|
|
|
|
/* Add HBA to the adapter list */
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
list_add_tail(&hba->list, &adapter_list);
|
|
adapter_count++;
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
|
|
dev->fcoe_cap = &hba->fcoe_cap;
|
|
clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
|
|
rc = dev->register_device(dev, CNIC_ULP_FCOE,
|
|
(void *) hba);
|
|
if (rc)
|
|
printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
|
|
else
|
|
set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
|
|
}
|
|
|
|
/* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
|
|
static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
|
|
{
|
|
struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
|
|
|
|
if (interface->enabled == true) {
|
|
if (!ctlr->lp) {
|
|
pr_err(PFX "__bnx2fc_disable: lport not found\n");
|
|
return -ENODEV;
|
|
} else {
|
|
interface->enabled = false;
|
|
fcoe_ctlr_link_down(ctlr);
|
|
fcoe_clean_pending_queue(ctlr->lp);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Deperecated: Use bnx2fc_enabled()
|
|
*/
|
|
static int bnx2fc_disable(struct net_device *netdev)
|
|
{
|
|
struct bnx2fc_interface *interface;
|
|
struct fcoe_ctlr *ctlr;
|
|
int rc = 0;
|
|
|
|
rtnl_lock();
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
|
|
interface = bnx2fc_interface_lookup(netdev);
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
|
|
if (!interface) {
|
|
rc = -ENODEV;
|
|
pr_err(PFX "bnx2fc_disable: interface not found\n");
|
|
} else {
|
|
rc = __bnx2fc_disable(ctlr);
|
|
}
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
rtnl_unlock();
|
|
return rc;
|
|
}
|
|
|
|
static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
|
|
{
|
|
struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
|
|
|
|
if (interface->enabled == false) {
|
|
if (!ctlr->lp) {
|
|
pr_err(PFX "__bnx2fc_enable: lport not found\n");
|
|
return -ENODEV;
|
|
} else if (!bnx2fc_link_ok(ctlr->lp)) {
|
|
fcoe_ctlr_link_up(ctlr);
|
|
interface->enabled = true;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Deprecated: Use bnx2fc_enabled()
|
|
*/
|
|
static int bnx2fc_enable(struct net_device *netdev)
|
|
{
|
|
struct bnx2fc_interface *interface;
|
|
struct fcoe_ctlr *ctlr;
|
|
int rc = 0;
|
|
|
|
rtnl_lock();
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
|
|
interface = bnx2fc_interface_lookup(netdev);
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
if (!interface) {
|
|
rc = -ENODEV;
|
|
pr_err(PFX "bnx2fc_enable: interface not found\n");
|
|
} else {
|
|
rc = __bnx2fc_enable(ctlr);
|
|
}
|
|
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
rtnl_unlock();
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller
|
|
* @cdev: The FCoE Controller that is being enabled or disabled
|
|
*
|
|
* fcoe_sysfs will ensure that the state of 'enabled' has
|
|
* changed, so no checking is necessary here. This routine simply
|
|
* calls fcoe_enable or fcoe_disable, both of which are deprecated.
|
|
* When those routines are removed the functionality can be merged
|
|
* here.
|
|
*/
|
|
static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
|
|
{
|
|
struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
|
|
|
|
switch (cdev->enabled) {
|
|
case FCOE_CTLR_ENABLED:
|
|
return __bnx2fc_enable(ctlr);
|
|
case FCOE_CTLR_DISABLED:
|
|
return __bnx2fc_disable(ctlr);
|
|
case FCOE_CTLR_UNUSED:
|
|
default:
|
|
return -ENOTSUPP;
|
|
};
|
|
}
|
|
|
|
enum bnx2fc_create_link_state {
|
|
BNX2FC_CREATE_LINK_DOWN,
|
|
BNX2FC_CREATE_LINK_UP,
|
|
};
|
|
|
|
/**
|
|
* _bnx2fc_create() - Create bnx2fc FCoE interface
|
|
* @netdev : The net_device object the Ethernet interface to create on
|
|
* @fip_mode: The FIP mode for this creation
|
|
* @link_state: The ctlr link state on creation
|
|
*
|
|
* Called from either the libfcoe 'create' module parameter
|
|
* via fcoe_create or from fcoe_syfs's ctlr_create file.
|
|
*
|
|
* libfcoe's 'create' module parameter is deprecated so some
|
|
* consolidation of code can be done when that interface is
|
|
* removed.
|
|
*
|
|
* Returns: 0 for success
|
|
*/
|
|
static int _bnx2fc_create(struct net_device *netdev,
|
|
enum fip_state fip_mode,
|
|
enum bnx2fc_create_link_state link_state)
|
|
{
|
|
struct fcoe_ctlr_device *cdev;
|
|
struct fcoe_ctlr *ctlr;
|
|
struct bnx2fc_interface *interface;
|
|
struct bnx2fc_hba *hba;
|
|
struct net_device *phys_dev = netdev;
|
|
struct fc_lport *lport;
|
|
struct ethtool_drvinfo drvinfo;
|
|
int rc = 0;
|
|
int vlan_id = 0;
|
|
|
|
BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
|
|
if (fip_mode != FIP_MODE_FABRIC) {
|
|
printk(KERN_ERR "fip mode not FABRIC\n");
|
|
return -EIO;
|
|
}
|
|
|
|
rtnl_lock();
|
|
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
|
|
if (!try_module_get(THIS_MODULE)) {
|
|
rc = -EINVAL;
|
|
goto mod_err;
|
|
}
|
|
|
|
/* obtain physical netdev */
|
|
if (netdev->priv_flags & IFF_802_1Q_VLAN)
|
|
phys_dev = vlan_dev_real_dev(netdev);
|
|
|
|
/* verify if the physical device is a netxtreme2 device */
|
|
if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
|
|
memset(&drvinfo, 0, sizeof(drvinfo));
|
|
phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
|
|
if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
|
|
printk(KERN_ERR PFX "Not a netxtreme2 device\n");
|
|
rc = -EINVAL;
|
|
goto netdev_err;
|
|
}
|
|
} else {
|
|
printk(KERN_ERR PFX "unable to obtain drv_info\n");
|
|
rc = -EINVAL;
|
|
goto netdev_err;
|
|
}
|
|
|
|
/* obtain interface and initialize rest of the structure */
|
|
hba = bnx2fc_hba_lookup(phys_dev);
|
|
if (!hba) {
|
|
rc = -ENODEV;
|
|
printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
|
|
goto netdev_err;
|
|
}
|
|
|
|
if (bnx2fc_interface_lookup(netdev)) {
|
|
rc = -EEXIST;
|
|
goto netdev_err;
|
|
}
|
|
|
|
interface = bnx2fc_interface_create(hba, netdev, fip_mode);
|
|
if (!interface) {
|
|
printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
|
|
goto ifput_err;
|
|
}
|
|
|
|
if (netdev->priv_flags & IFF_802_1Q_VLAN) {
|
|
vlan_id = vlan_dev_vlan_id(netdev);
|
|
interface->vlan_enabled = 1;
|
|
}
|
|
|
|
ctlr = bnx2fc_to_ctlr(interface);
|
|
cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
|
|
interface->vlan_id = vlan_id;
|
|
|
|
interface->timer_work_queue =
|
|
create_singlethread_workqueue("bnx2fc_timer_wq");
|
|
if (!interface->timer_work_queue) {
|
|
printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
|
|
rc = -EINVAL;
|
|
goto ifput_err;
|
|
}
|
|
|
|
lport = bnx2fc_if_create(interface, &cdev->dev, 0);
|
|
if (!lport) {
|
|
printk(KERN_ERR PFX "Failed to create interface (%s)\n",
|
|
netdev->name);
|
|
rc = -EINVAL;
|
|
goto if_create_err;
|
|
}
|
|
|
|
/* Add interface to if_list */
|
|
list_add_tail(&interface->list, &if_list);
|
|
|
|
lport->boot_time = jiffies;
|
|
|
|
/* Make this master N_port */
|
|
ctlr->lp = lport;
|
|
|
|
if (link_state == BNX2FC_CREATE_LINK_UP)
|
|
cdev->enabled = FCOE_CTLR_ENABLED;
|
|
else
|
|
cdev->enabled = FCOE_CTLR_DISABLED;
|
|
|
|
if (link_state == BNX2FC_CREATE_LINK_UP &&
|
|
!bnx2fc_link_ok(lport)) {
|
|
fcoe_ctlr_link_up(ctlr);
|
|
fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
|
|
set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
|
|
}
|
|
|
|
BNX2FC_HBA_DBG(lport, "create: START DISC\n");
|
|
bnx2fc_start_disc(interface);
|
|
|
|
if (link_state == BNX2FC_CREATE_LINK_UP)
|
|
interface->enabled = true;
|
|
|
|
/*
|
|
* Release from kref_init in bnx2fc_interface_setup, on success
|
|
* lport should be holding a reference taken in bnx2fc_if_create
|
|
*/
|
|
bnx2fc_interface_put(interface);
|
|
/* put netdev that was held while calling dev_get_by_name */
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
rtnl_unlock();
|
|
return 0;
|
|
|
|
if_create_err:
|
|
destroy_workqueue(interface->timer_work_queue);
|
|
ifput_err:
|
|
bnx2fc_net_cleanup(interface);
|
|
bnx2fc_interface_put(interface);
|
|
goto mod_err;
|
|
netdev_err:
|
|
module_put(THIS_MODULE);
|
|
mod_err:
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
rtnl_unlock();
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_create() - Create a bnx2fc interface
|
|
* @netdev : The net_device object the Ethernet interface to create on
|
|
* @fip_mode: The FIP mode for this creation
|
|
*
|
|
* Called from fcoe transport
|
|
*
|
|
* Returns: 0 for success
|
|
*/
|
|
static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
|
|
{
|
|
return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs
|
|
* @netdev: The net_device to be used by the allocated FCoE Controller
|
|
*
|
|
* This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
|
|
* in a link_down state. The allows the user an opportunity to configure
|
|
* the FCoE Controller from sysfs before enabling the FCoE Controller.
|
|
*
|
|
* Creating in with this routine starts the FCoE Controller in Fabric
|
|
* mode. The user can change to VN2VN or another mode before enabling.
|
|
*/
|
|
static int bnx2fc_ctlr_alloc(struct net_device *netdev)
|
|
{
|
|
return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
|
|
BNX2FC_CREATE_LINK_DOWN);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
|
|
*
|
|
* @cnic: Pointer to cnic device instance
|
|
*
|
|
**/
|
|
static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
|
|
{
|
|
struct bnx2fc_hba *hba;
|
|
|
|
/* Called with bnx2fc_dev_lock held */
|
|
list_for_each_entry(hba, &adapter_list, list) {
|
|
if (hba->cnic == cnic)
|
|
return hba;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
|
|
*netdev)
|
|
{
|
|
struct bnx2fc_interface *interface;
|
|
|
|
/* Called with bnx2fc_dev_lock held */
|
|
list_for_each_entry(interface, &if_list, list) {
|
|
if (interface->netdev == netdev)
|
|
return interface;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
|
|
*phys_dev)
|
|
{
|
|
struct bnx2fc_hba *hba;
|
|
|
|
/* Called with bnx2fc_dev_lock held */
|
|
list_for_each_entry(hba, &adapter_list, list) {
|
|
if (hba->phys_dev == phys_dev)
|
|
return hba;
|
|
}
|
|
printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
|
|
*
|
|
* @dev cnic device handle
|
|
*/
|
|
static void bnx2fc_ulp_exit(struct cnic_dev *dev)
|
|
{
|
|
struct bnx2fc_hba *hba;
|
|
struct bnx2fc_interface *interface, *tmp;
|
|
|
|
BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
|
|
|
|
if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
|
|
printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
|
|
dev->netdev->name, dev->flags);
|
|
return;
|
|
}
|
|
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
hba = bnx2fc_find_hba_for_cnic(dev);
|
|
if (!hba) {
|
|
printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
|
|
dev);
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
return;
|
|
}
|
|
|
|
list_del_init(&hba->list);
|
|
adapter_count--;
|
|
|
|
list_for_each_entry_safe(interface, tmp, &if_list, list)
|
|
/* destroy not called yet, move to quiesced list */
|
|
if (interface->hba == hba)
|
|
__bnx2fc_destroy(interface);
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
|
|
/* Ensure ALL destroy work has been completed before return */
|
|
flush_workqueue(bnx2fc_wq);
|
|
|
|
bnx2fc_ulp_stop(hba);
|
|
/* unregister cnic device */
|
|
if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
|
|
hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
|
|
bnx2fc_hba_destroy(hba);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_fcoe_reset - Resets the fcoe
|
|
*
|
|
* @shost: shost the reset is from
|
|
*
|
|
* Returns: always 0
|
|
*/
|
|
static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
|
|
{
|
|
struct fc_lport *lport = shost_priv(shost);
|
|
fc_lport_reset(lport);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static bool bnx2fc_match(struct net_device *netdev)
|
|
{
|
|
struct net_device *phys_dev = netdev;
|
|
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
if (netdev->priv_flags & IFF_802_1Q_VLAN)
|
|
phys_dev = vlan_dev_real_dev(netdev);
|
|
|
|
if (bnx2fc_hba_lookup(phys_dev)) {
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
return true;
|
|
}
|
|
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
return false;
|
|
}
|
|
|
|
|
|
static struct fcoe_transport bnx2fc_transport = {
|
|
.name = {"bnx2fc"},
|
|
.attached = false,
|
|
.list = LIST_HEAD_INIT(bnx2fc_transport.list),
|
|
.alloc = bnx2fc_ctlr_alloc,
|
|
.match = bnx2fc_match,
|
|
.create = bnx2fc_create,
|
|
.destroy = bnx2fc_destroy,
|
|
.enable = bnx2fc_enable,
|
|
.disable = bnx2fc_disable,
|
|
};
|
|
|
|
/**
|
|
* bnx2fc_percpu_thread_create - Create a receive thread for an
|
|
* online CPU
|
|
*
|
|
* @cpu: cpu index for the online cpu
|
|
*/
|
|
static void bnx2fc_percpu_thread_create(unsigned int cpu)
|
|
{
|
|
struct bnx2fc_percpu_s *p;
|
|
struct task_struct *thread;
|
|
|
|
p = &per_cpu(bnx2fc_percpu, cpu);
|
|
|
|
thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
|
|
(void *)p, cpu_to_node(cpu),
|
|
"bnx2fc_thread/%d", cpu);
|
|
/* bind thread to the cpu */
|
|
if (likely(!IS_ERR(thread))) {
|
|
kthread_bind(thread, cpu);
|
|
p->iothread = thread;
|
|
wake_up_process(thread);
|
|
}
|
|
}
|
|
|
|
static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
|
|
{
|
|
struct bnx2fc_percpu_s *p;
|
|
struct task_struct *thread;
|
|
struct bnx2fc_work *work, *tmp;
|
|
|
|
BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
|
|
|
|
/* Prevent any new work from being queued for this CPU */
|
|
p = &per_cpu(bnx2fc_percpu, cpu);
|
|
spin_lock_bh(&p->fp_work_lock);
|
|
thread = p->iothread;
|
|
p->iothread = NULL;
|
|
|
|
|
|
/* Free all work in the list */
|
|
list_for_each_entry_safe(work, tmp, &p->work_list, list) {
|
|
list_del_init(&work->list);
|
|
bnx2fc_process_cq_compl(work->tgt, work->wqe);
|
|
kfree(work);
|
|
}
|
|
|
|
spin_unlock_bh(&p->fp_work_lock);
|
|
|
|
if (thread)
|
|
kthread_stop(thread);
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_cpu_callback - Handler for CPU hotplug events
|
|
*
|
|
* @nfb: The callback data block
|
|
* @action: The event triggering the callback
|
|
* @hcpu: The index of the CPU that the event is for
|
|
*
|
|
* This creates or destroys per-CPU data for fcoe
|
|
*
|
|
* Returns NOTIFY_OK always.
|
|
*/
|
|
static int bnx2fc_cpu_callback(struct notifier_block *nfb,
|
|
unsigned long action, void *hcpu)
|
|
{
|
|
unsigned cpu = (unsigned long)hcpu;
|
|
|
|
switch (action) {
|
|
case CPU_ONLINE:
|
|
case CPU_ONLINE_FROZEN:
|
|
printk(PFX "CPU %x online: Create Rx thread\n", cpu);
|
|
bnx2fc_percpu_thread_create(cpu);
|
|
break;
|
|
case CPU_DEAD:
|
|
case CPU_DEAD_FROZEN:
|
|
printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
|
|
bnx2fc_percpu_thread_destroy(cpu);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_mod_init - module init entry point
|
|
*
|
|
* Initialize driver wide global data structures, and register
|
|
* with cnic module
|
|
**/
|
|
static int __init bnx2fc_mod_init(void)
|
|
{
|
|
struct fcoe_percpu_s *bg;
|
|
struct task_struct *l2_thread;
|
|
int rc = 0;
|
|
unsigned int cpu = 0;
|
|
struct bnx2fc_percpu_s *p;
|
|
|
|
printk(KERN_INFO PFX "%s", version);
|
|
|
|
/* register as a fcoe transport */
|
|
rc = fcoe_transport_attach(&bnx2fc_transport);
|
|
if (rc) {
|
|
printk(KERN_ERR "failed to register an fcoe transport, check "
|
|
"if libfcoe is loaded\n");
|
|
goto out;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&adapter_list);
|
|
INIT_LIST_HEAD(&if_list);
|
|
mutex_init(&bnx2fc_dev_lock);
|
|
adapter_count = 0;
|
|
|
|
/* Attach FC transport template */
|
|
rc = bnx2fc_attach_transport();
|
|
if (rc)
|
|
goto detach_ft;
|
|
|
|
bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
|
|
if (!bnx2fc_wq) {
|
|
rc = -ENOMEM;
|
|
goto release_bt;
|
|
}
|
|
|
|
bg = &bnx2fc_global;
|
|
skb_queue_head_init(&bg->fcoe_rx_list);
|
|
l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
|
|
(void *)bg,
|
|
"bnx2fc_l2_thread");
|
|
if (IS_ERR(l2_thread)) {
|
|
rc = PTR_ERR(l2_thread);
|
|
goto free_wq;
|
|
}
|
|
wake_up_process(l2_thread);
|
|
spin_lock_bh(&bg->fcoe_rx_list.lock);
|
|
bg->thread = l2_thread;
|
|
spin_unlock_bh(&bg->fcoe_rx_list.lock);
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
p = &per_cpu(bnx2fc_percpu, cpu);
|
|
INIT_LIST_HEAD(&p->work_list);
|
|
spin_lock_init(&p->fp_work_lock);
|
|
}
|
|
|
|
cpu_notifier_register_begin();
|
|
|
|
for_each_online_cpu(cpu) {
|
|
bnx2fc_percpu_thread_create(cpu);
|
|
}
|
|
|
|
/* Initialize per CPU interrupt thread */
|
|
__register_hotcpu_notifier(&bnx2fc_cpu_notifier);
|
|
|
|
cpu_notifier_register_done();
|
|
|
|
cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
|
|
|
|
return 0;
|
|
|
|
free_wq:
|
|
destroy_workqueue(bnx2fc_wq);
|
|
release_bt:
|
|
bnx2fc_release_transport();
|
|
detach_ft:
|
|
fcoe_transport_detach(&bnx2fc_transport);
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static void __exit bnx2fc_mod_exit(void)
|
|
{
|
|
LIST_HEAD(to_be_deleted);
|
|
struct bnx2fc_hba *hba, *next;
|
|
struct fcoe_percpu_s *bg;
|
|
struct task_struct *l2_thread;
|
|
struct sk_buff *skb;
|
|
unsigned int cpu = 0;
|
|
|
|
/*
|
|
* NOTE: Since cnic calls register_driver routine rtnl_lock,
|
|
* it will have higher precedence than bnx2fc_dev_lock.
|
|
* unregister_device() cannot be called with bnx2fc_dev_lock
|
|
* held.
|
|
*/
|
|
mutex_lock(&bnx2fc_dev_lock);
|
|
list_splice(&adapter_list, &to_be_deleted);
|
|
INIT_LIST_HEAD(&adapter_list);
|
|
adapter_count = 0;
|
|
mutex_unlock(&bnx2fc_dev_lock);
|
|
|
|
/* Unregister with cnic */
|
|
list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
|
|
list_del_init(&hba->list);
|
|
printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
|
|
hba);
|
|
bnx2fc_ulp_stop(hba);
|
|
/* unregister cnic device */
|
|
if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
|
|
&hba->reg_with_cnic))
|
|
hba->cnic->unregister_device(hba->cnic,
|
|
CNIC_ULP_FCOE);
|
|
bnx2fc_hba_destroy(hba);
|
|
}
|
|
cnic_unregister_driver(CNIC_ULP_FCOE);
|
|
|
|
/* Destroy global thread */
|
|
bg = &bnx2fc_global;
|
|
spin_lock_bh(&bg->fcoe_rx_list.lock);
|
|
l2_thread = bg->thread;
|
|
bg->thread = NULL;
|
|
while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
|
|
kfree_skb(skb);
|
|
|
|
spin_unlock_bh(&bg->fcoe_rx_list.lock);
|
|
|
|
if (l2_thread)
|
|
kthread_stop(l2_thread);
|
|
|
|
cpu_notifier_register_begin();
|
|
|
|
/* Destroy per cpu threads */
|
|
for_each_online_cpu(cpu) {
|
|
bnx2fc_percpu_thread_destroy(cpu);
|
|
}
|
|
|
|
__unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
|
|
|
|
cpu_notifier_register_done();
|
|
|
|
destroy_workqueue(bnx2fc_wq);
|
|
/*
|
|
* detach from scsi transport
|
|
* must happen after all destroys are done
|
|
*/
|
|
bnx2fc_release_transport();
|
|
|
|
/* detach from fcoe transport */
|
|
fcoe_transport_detach(&bnx2fc_transport);
|
|
}
|
|
|
|
module_init(bnx2fc_mod_init);
|
|
module_exit(bnx2fc_mod_exit);
|
|
|
|
static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
|
|
.set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled,
|
|
.get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
|
|
.get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
|
|
.get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
|
|
.get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
|
|
.get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
|
|
.get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
|
|
|
|
.get_fcoe_fcf_selected = fcoe_fcf_get_selected,
|
|
.get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id,
|
|
};
|
|
|
|
static struct fc_function_template bnx2fc_transport_function = {
|
|
.show_host_node_name = 1,
|
|
.show_host_port_name = 1,
|
|
.show_host_supported_classes = 1,
|
|
.show_host_supported_fc4s = 1,
|
|
.show_host_active_fc4s = 1,
|
|
.show_host_maxframe_size = 1,
|
|
|
|
.show_host_port_id = 1,
|
|
.show_host_supported_speeds = 1,
|
|
.get_host_speed = fc_get_host_speed,
|
|
.show_host_speed = 1,
|
|
.show_host_port_type = 1,
|
|
.get_host_port_state = fc_get_host_port_state,
|
|
.show_host_port_state = 1,
|
|
.show_host_symbolic_name = 1,
|
|
|
|
.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
|
|
sizeof(struct bnx2fc_rport)),
|
|
.show_rport_maxframe_size = 1,
|
|
.show_rport_supported_classes = 1,
|
|
|
|
.show_host_fabric_name = 1,
|
|
.show_starget_node_name = 1,
|
|
.show_starget_port_name = 1,
|
|
.show_starget_port_id = 1,
|
|
.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
|
|
.show_rport_dev_loss_tmo = 1,
|
|
.get_fc_host_stats = bnx2fc_get_host_stats,
|
|
|
|
.issue_fc_host_lip = bnx2fc_fcoe_reset,
|
|
|
|
.terminate_rport_io = fc_rport_terminate_io,
|
|
|
|
.vport_create = bnx2fc_vport_create,
|
|
.vport_delete = bnx2fc_vport_destroy,
|
|
.vport_disable = bnx2fc_vport_disable,
|
|
.bsg_request = fc_lport_bsg_request,
|
|
};
|
|
|
|
static struct fc_function_template bnx2fc_vport_xport_function = {
|
|
.show_host_node_name = 1,
|
|
.show_host_port_name = 1,
|
|
.show_host_supported_classes = 1,
|
|
.show_host_supported_fc4s = 1,
|
|
.show_host_active_fc4s = 1,
|
|
.show_host_maxframe_size = 1,
|
|
|
|
.show_host_port_id = 1,
|
|
.show_host_supported_speeds = 1,
|
|
.get_host_speed = fc_get_host_speed,
|
|
.show_host_speed = 1,
|
|
.show_host_port_type = 1,
|
|
.get_host_port_state = fc_get_host_port_state,
|
|
.show_host_port_state = 1,
|
|
.show_host_symbolic_name = 1,
|
|
|
|
.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
|
|
sizeof(struct bnx2fc_rport)),
|
|
.show_rport_maxframe_size = 1,
|
|
.show_rport_supported_classes = 1,
|
|
|
|
.show_host_fabric_name = 1,
|
|
.show_starget_node_name = 1,
|
|
.show_starget_port_name = 1,
|
|
.show_starget_port_id = 1,
|
|
.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
|
|
.show_rport_dev_loss_tmo = 1,
|
|
.get_fc_host_stats = fc_get_host_stats,
|
|
.issue_fc_host_lip = bnx2fc_fcoe_reset,
|
|
.terminate_rport_io = fc_rport_terminate_io,
|
|
.bsg_request = fc_lport_bsg_request,
|
|
};
|
|
|
|
/**
|
|
* scsi_host_template structure used while registering with SCSI-ml
|
|
*/
|
|
static struct scsi_host_template bnx2fc_shost_template = {
|
|
.module = THIS_MODULE,
|
|
.name = "Broadcom Offload FCoE Initiator",
|
|
.queuecommand = bnx2fc_queuecommand,
|
|
.eh_abort_handler = bnx2fc_eh_abort, /* abts */
|
|
.eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
|
|
.eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
|
|
.eh_host_reset_handler = fc_eh_host_reset,
|
|
.slave_alloc = fc_slave_alloc,
|
|
.change_queue_depth = fc_change_queue_depth,
|
|
.change_queue_type = fc_change_queue_type,
|
|
.this_id = -1,
|
|
.cmd_per_lun = 3,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
|
|
.max_sectors = 1024,
|
|
};
|
|
|
|
static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
|
|
.frame_send = bnx2fc_xmit,
|
|
.elsct_send = bnx2fc_elsct_send,
|
|
.fcp_abort_io = bnx2fc_abort_io,
|
|
.fcp_cleanup = bnx2fc_cleanup,
|
|
.get_lesb = fcoe_get_lesb,
|
|
.rport_event_callback = bnx2fc_rport_event_handler,
|
|
};
|
|
|
|
/**
|
|
* bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
|
|
* structure carrying callback function pointers
|
|
*/
|
|
static struct cnic_ulp_ops bnx2fc_cnic_cb = {
|
|
.owner = THIS_MODULE,
|
|
.cnic_init = bnx2fc_ulp_init,
|
|
.cnic_exit = bnx2fc_ulp_exit,
|
|
.cnic_start = bnx2fc_ulp_start,
|
|
.cnic_stop = bnx2fc_ulp_stop,
|
|
.indicate_kcqes = bnx2fc_indicate_kcqe,
|
|
.indicate_netevent = bnx2fc_indicate_netevent,
|
|
.cnic_get_stats = bnx2fc_ulp_get_stats,
|
|
};
|