obj-$(CONFIG_FCOE) += fcoe.o
fcoe-y := \
- libfcoe.o \
- fcoe_sw.o
+ libfcoe.o
+++ /dev/null
-/*
- * Copyright(c) 2007 - 2008 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Maintained at www.Open-FCoE.org
- */
-
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/if_vlan.h>
-#include <net/rtnetlink.h>
-
-#include <scsi/fc/fc_els.h>
-#include <scsi/fc/fc_encaps.h>
-#include <scsi/fc/fc_fs.h>
-#include <scsi/scsi_transport.h>
-#include <scsi/scsi_transport_fc.h>
-
-#include <scsi/libfc.h>
-#include <scsi/libfcoe.h>
-
-#define FCOE_SW_VERSION "0.1"
-#define FCOE_SW_NAME "fcoesw"
-#define FCOE_SW_VENDOR "Open-FCoE.org"
-
-#define FCOE_MAX_LUN 255
-#define FCOE_MAX_FCP_TARGET 256
-
-#define FCOE_MAX_OUTSTANDING_COMMANDS 1024
-
-#define FCOE_MIN_XID 0x0001 /* the min xid supported by fcoe_sw */
-#define FCOE_MAX_XID 0x07ef /* the max xid supported by fcoe_sw */
-
-static struct scsi_transport_template *scsi_transport_fcoe_sw;
-
-struct fc_function_template fcoe_sw_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),
- .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 = fcoe_reset,
-
- .terminate_rport_io = fc_rport_terminate_io,
-};
-
-static struct scsi_host_template fcoe_sw_shost_template = {
- .module = THIS_MODULE,
- .name = "FCoE Driver",
- .proc_name = FCOE_SW_NAME,
- .queuecommand = fc_queuecommand,
- .eh_abort_handler = fc_eh_abort,
- .eh_device_reset_handler = fc_eh_device_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 = 32,
- .can_queue = FCOE_MAX_OUTSTANDING_COMMANDS,
- .use_clustering = ENABLE_CLUSTERING,
- .sg_tablesize = SG_ALL,
- .max_sectors = 0xffff,
-};
-
-/**
- * fcoe_sw_lport_config() - sets up the fc_lport
- * @lp: ptr to the fc_lport
- * @shost: ptr to the parent scsi host
- *
- * Returns: 0 for success
- */
-static int fcoe_sw_lport_config(struct fc_lport *lp)
-{
- lp->link_up = 0;
- lp->qfull = 0;
- lp->max_retry_count = 3;
- lp->e_d_tov = 2 * 1000; /* FC-FS default */
- lp->r_a_tov = 2 * 2 * 1000;
- lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
- FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
-
- fc_lport_init_stats(lp);
-
- /* lport fc_lport related configuration */
- fc_lport_config(lp);
-
- /* offload related configuration */
- lp->crc_offload = 0;
- lp->seq_offload = 0;
- lp->lro_enabled = 0;
- lp->lro_xid = 0;
- lp->lso_max = 0;
-
- return 0;
-}
-
-/**
- * fcoe_sw_netdev_config() - Set up netdev for SW FCoE
- * @lp : ptr to the fc_lport
- * @netdev : ptr to the associated netdevice struct
- *
- * Must be called after fcoe_sw_lport_config() as it will use lport mutex
- *
- * Returns : 0 for success
- */
-static int fcoe_sw_netdev_config(struct fc_lport *lp, struct net_device *netdev)
-{
- u32 mfs;
- u64 wwnn, wwpn;
- struct fcoe_softc *fc;
- u8 flogi_maddr[ETH_ALEN];
-
- /* Setup lport private data to point to fcoe softc */
- fc = lport_priv(lp);
- fc->lp = lp;
- fc->real_dev = netdev;
- fc->phys_dev = netdev;
-
- /* Require support for get_pauseparam ethtool op. */
- if (netdev->priv_flags & IFF_802_1Q_VLAN)
- fc->phys_dev = vlan_dev_real_dev(netdev);
-
- /* Do not support for bonding device */
- if ((fc->real_dev->priv_flags & IFF_MASTER_ALB) ||
- (fc->real_dev->priv_flags & IFF_SLAVE_INACTIVE) ||
- (fc->real_dev->priv_flags & IFF_MASTER_8023AD)) {
- return -EOPNOTSUPP;
- }
-
- /*
- * Determine max frame size based on underlying device and optional
- * user-configured limit. If the MFS is too low, fcoe_link_ok()
- * will return 0, so do this first.
- */
- mfs = fc->real_dev->mtu - (sizeof(struct fcoe_hdr) +
- sizeof(struct fcoe_crc_eof));
- if (fc_set_mfs(lp, mfs))
- return -EINVAL;
-
- if (!fcoe_link_ok(lp))
- lp->link_up = 1;
-
- /* offload features support */
- if (fc->real_dev->features & NETIF_F_SG)
- lp->sg_supp = 1;
-
-#ifdef NETIF_F_FCOE_CRC
- if (netdev->features & NETIF_F_FCOE_CRC) {
- lp->crc_offload = 1;
- printk(KERN_DEBUG "fcoe:%s supports FCCRC offload\n",
- netdev->name);
- }
-#endif
-#ifdef NETIF_F_FSO
- if (netdev->features & NETIF_F_FSO) {
- lp->seq_offload = 1;
- lp->lso_max = netdev->gso_max_size;
- printk(KERN_DEBUG "fcoe:%s supports LSO for max len 0x%x\n",
- netdev->name, lp->lso_max);
- }
-#endif
- if (netdev->fcoe_ddp_xid) {
- lp->lro_enabled = 1;
- lp->lro_xid = netdev->fcoe_ddp_xid;
- printk(KERN_DEBUG "fcoe:%s supports LRO for max xid 0x%x\n",
- netdev->name, lp->lro_xid);
- }
- skb_queue_head_init(&fc->fcoe_pending_queue);
- fc->fcoe_pending_queue_active = 0;
-
- /* setup Source Mac Address */
- memcpy(fc->ctl_src_addr, fc->real_dev->dev_addr,
- fc->real_dev->addr_len);
-
- wwnn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 1, 0);
- fc_set_wwnn(lp, wwnn);
- /* XXX - 3rd arg needs to be vlan id */
- wwpn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 2, 0);
- fc_set_wwpn(lp, wwpn);
-
- /*
- * Add FCoE MAC address as second unicast MAC address
- * or enter promiscuous mode if not capable of listening
- * for multiple unicast MACs.
- */
- rtnl_lock();
- memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
- dev_unicast_add(fc->real_dev, flogi_maddr, ETH_ALEN);
- rtnl_unlock();
-
- /*
- * setup the receive function from ethernet driver
- * on the ethertype for the given device
- */
- fc->fcoe_packet_type.func = fcoe_rcv;
- fc->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
- fc->fcoe_packet_type.dev = fc->real_dev;
- dev_add_pack(&fc->fcoe_packet_type);
-
- return 0;
-}
-
-/**
- * fcoe_sw_shost_config() - Sets up fc_lport->host
- * @lp : ptr to the fc_lport
- * @shost : ptr to the associated scsi host
- * @dev : device associated to scsi host
- *
- * Must be called after fcoe_sw_lport_config() and fcoe_sw_netdev_config()
- *
- * Returns : 0 for success
- */
-static int fcoe_sw_shost_config(struct fc_lport *lp, struct Scsi_Host *shost,
- struct device *dev)
-{
- int rc = 0;
-
- /* lport scsi host config */
- lp->host = shost;
-
- lp->host->max_lun = FCOE_MAX_LUN;
- lp->host->max_id = FCOE_MAX_FCP_TARGET;
- lp->host->max_channel = 0;
- lp->host->transportt = scsi_transport_fcoe_sw;
-
- /* add the new host to the SCSI-ml */
- rc = scsi_add_host(lp->host, dev);
- if (rc) {
- FC_DBG("fcoe_sw_shost_config:error on scsi_add_host\n");
- return rc;
- }
- sprintf(fc_host_symbolic_name(lp->host), "%s v%s over %s",
- FCOE_SW_NAME, FCOE_SW_VERSION,
- fcoe_netdev(lp)->name);
-
- return 0;
-}
-
-/**
- * fcoe_sw_em_config() - allocates em for this lport
- * @lp: the port that em is to allocated for
- *
- * Returns : 0 on success
- */
-static inline int fcoe_sw_em_config(struct fc_lport *lp)
-{
- BUG_ON(lp->emp);
-
- lp->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3,
- FCOE_MIN_XID, FCOE_MAX_XID);
- if (!lp->emp)
- return -ENOMEM;
-
- return 0;
-}
-
-/**
- * fcoe_sw_destroy() - FCoE software HBA tear-down function
- * @netdev: ptr to the associated net_device
- *
- * Returns: 0 if link is OK for use by FCoE.
- */
-int fcoe_sw_destroy(struct net_device *netdev)
-{
- struct fc_lport *lp = NULL;
- struct fcoe_softc *fc;
- u8 flogi_maddr[ETH_ALEN];
-
- BUG_ON(!netdev);
-
- printk(KERN_DEBUG "fcoe_sw_destroy:interface on %s\n",
- netdev->name);
-
- lp = fcoe_hostlist_lookup(netdev);
- if (!lp)
- return -ENODEV;
-
- fc = lport_priv(lp);
-
- /* Logout of the fabric */
- fc_fabric_logoff(lp);
-
- /* Remove the instance from fcoe's list */
- fcoe_hostlist_remove(lp);
-
- /* Don't listen for Ethernet packets anymore */
- dev_remove_pack(&fc->fcoe_packet_type);
-
- /* Cleanup the fc_lport */
- fc_lport_destroy(lp);
- fc_fcp_destroy(lp);
-
- /* Detach from the scsi-ml */
- fc_remove_host(lp->host);
- scsi_remove_host(lp->host);
-
- /* There are no more rports or I/O, free the EM */
- if (lp->emp)
- fc_exch_mgr_free(lp->emp);
-
- /* Delete secondary MAC addresses */
- rtnl_lock();
- memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
- dev_unicast_delete(fc->real_dev, flogi_maddr, ETH_ALEN);
- if (compare_ether_addr(fc->data_src_addr, (u8[6]) { 0 }))
- dev_unicast_delete(fc->real_dev, fc->data_src_addr, ETH_ALEN);
- rtnl_unlock();
-
- /* Free the per-CPU revieve threads */
- fcoe_percpu_clean(lp);
-
- /* Free existing skbs */
- fcoe_clean_pending_queue(lp);
-
- /* Free memory used by statistical counters */
- fc_lport_free_stats(lp);
-
- /* Release the net_device and Scsi_Host */
- dev_put(fc->real_dev);
- scsi_host_put(lp->host);
-
- return 0;
-}
-
-/*
- * fcoe_sw_ddp_setup - calls LLD's ddp_setup through net_device
- * @lp: the corresponding fc_lport
- * @xid: the exchange id for this ddp transfer
- * @sgl: the scatterlist describing this transfer
- * @sgc: number of sg items
- *
- * Returns : 0 no ddp
- */
-static int fcoe_sw_ddp_setup(struct fc_lport *lp, u16 xid,
- struct scatterlist *sgl, unsigned int sgc)
-{
- struct net_device *n = fcoe_netdev(lp);
-
- if (n->netdev_ops && n->netdev_ops->ndo_fcoe_ddp_setup)
- return n->netdev_ops->ndo_fcoe_ddp_setup(n, xid, sgl, sgc);
-
- return 0;
-}
-
-/*
- * fcoe_sw_ddp_done - calls LLD's ddp_done through net_device
- * @lp: the corresponding fc_lport
- * @xid: the exchange id for this ddp transfer
- *
- * Returns : the length of data that have been completed by ddp
- */
-static int fcoe_sw_ddp_done(struct fc_lport *lp, u16 xid)
-{
- struct net_device *n = fcoe_netdev(lp);
-
- if (n->netdev_ops && n->netdev_ops->ndo_fcoe_ddp_done)
- return n->netdev_ops->ndo_fcoe_ddp_done(n, xid);
- return 0;
-}
-
-static struct libfc_function_template fcoe_sw_libfc_fcn_templ = {
- .frame_send = fcoe_xmit,
- .ddp_setup = fcoe_sw_ddp_setup,
- .ddp_done = fcoe_sw_ddp_done,
-};
-
-/**
- * fcoe_sw_create() - this function creates the fcoe interface
- * @netdev: pointer the associated netdevice
- *
- * Creates fc_lport struct and scsi_host for lport, configures lport
- * and starts fabric login.
- *
- * Returns : 0 on success
- */
-int fcoe_sw_create(struct net_device *netdev)
-{
- int rc;
- struct fc_lport *lp = NULL;
- struct fcoe_softc *fc;
- struct Scsi_Host *shost;
-
- BUG_ON(!netdev);
-
- printk(KERN_DEBUG "fcoe_sw_create:interface on %s\n",
- netdev->name);
-
- lp = fcoe_hostlist_lookup(netdev);
- if (lp)
- return -EEXIST;
-
- shost = fcoe_host_alloc(&fcoe_sw_shost_template,
- sizeof(struct fcoe_softc));
- if (!shost) {
- FC_DBG("Could not allocate host structure\n");
- return -ENOMEM;
- }
- lp = shost_priv(shost);
- fc = lport_priv(lp);
-
- /* configure fc_lport, e.g., em */
- rc = fcoe_sw_lport_config(lp);
- if (rc) {
- FC_DBG("Could not configure lport\n");
- goto out_host_put;
- }
-
- /* configure lport network properties */
- rc = fcoe_sw_netdev_config(lp, netdev);
- if (rc) {
- FC_DBG("Could not configure netdev for lport\n");
- goto out_host_put;
- }
-
- /* configure lport scsi host properties */
- rc = fcoe_sw_shost_config(lp, shost, &netdev->dev);
- if (rc) {
- FC_DBG("Could not configure shost for lport\n");
- goto out_host_put;
- }
-
- /* lport exch manager allocation */
- rc = fcoe_sw_em_config(lp);
- if (rc) {
- FC_DBG("Could not configure em for lport\n");
- goto out_host_put;
- }
-
- /* Initialize the library */
- rc = fcoe_libfc_config(lp, &fcoe_sw_libfc_fcn_templ);
- if (rc) {
- FC_DBG("Could not configure libfc for lport!\n");
- goto out_lp_destroy;
- }
-
- /* add to lports list */
- fcoe_hostlist_add(lp);
-
- lp->boot_time = jiffies;
-
- fc_fabric_login(lp);
-
- dev_hold(netdev);
-
- return rc;
-
-out_lp_destroy:
- fc_exch_mgr_free(lp->emp); /* Free the EM */
-out_host_put:
- scsi_host_put(lp->host);
- return rc;
-}
-
-/**
- * fcoe_sw_init() - attach to scsi transport
- *
- * Returns : 0 on success
- */
-int __init fcoe_sw_init(void)
-{
- /* attach to scsi transport */
- scsi_transport_fcoe_sw =
- fc_attach_transport(&fcoe_sw_transport_function);
-
- if (!scsi_transport_fcoe_sw) {
- printk(KERN_ERR "fcoe_sw_init:fc_attach_transport() failed\n");
- return -ENODEV;
- }
-
- return 0;
-}
-
-/**
- * fcoe_sw_exit() - detach from scsi transport
- *
- * Returns : 0 on success
- */
-int __exit fcoe_sw_exit(void)
-{
- fc_release_transport(scsi_transport_fcoe_sw);
- return 0;
-}
#define FCOE_WORD_TO_BYTE 4
+#define FCOE_VERSION "0.1"
+#define FCOE_NAME "fcoe"
+#define FCOE_VENDOR "Open-FCoE.org"
+
+#define FCOE_MAX_LUN 255
+#define FCOE_MAX_FCP_TARGET 256
+
+#define FCOE_MAX_OUTSTANDING_COMMANDS 1024
+
+#define FCOE_MIN_XID 0x0001 /* the min xid supported by fcoe_sw */
+#define FCOE_MAX_XID 0x07ef /* the max xid supported by fcoe_sw */
+
MODULE_AUTHOR("Open-FCoE.org");
MODULE_DESCRIPTION("FCoE");
MODULE_LICENSE("GPL");
.notifier_call = fcoe_device_notification,
};
+static struct scsi_transport_template *scsi_transport_fcoe_sw;
+
+struct fc_function_template fcoe_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),
+ .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 = fcoe_reset,
+
+ .terminate_rport_io = fc_rport_terminate_io,
+};
+
+static struct scsi_host_template fcoe_shost_template = {
+ .module = THIS_MODULE,
+ .name = "FCoE Driver",
+ .proc_name = FCOE_NAME,
+ .queuecommand = fc_queuecommand,
+ .eh_abort_handler = fc_eh_abort,
+ .eh_device_reset_handler = fc_eh_device_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 = 32,
+ .can_queue = FCOE_MAX_OUTSTANDING_COMMANDS,
+ .use_clustering = ENABLE_CLUSTERING,
+ .sg_tablesize = SG_ALL,
+ .max_sectors = 0xffff,
+};
+
+/**
+ * fcoe_lport_config() - sets up the fc_lport
+ * @lp: ptr to the fc_lport
+ * @shost: ptr to the parent scsi host
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_lport_config(struct fc_lport *lp)
+{
+ lp->link_up = 0;
+ lp->qfull = 0;
+ lp->max_retry_count = 3;
+ lp->e_d_tov = 2 * 1000; /* FC-FS default */
+ lp->r_a_tov = 2 * 2 * 1000;
+ lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
+ FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
+
+ fc_lport_init_stats(lp);
+
+ /* lport fc_lport related configuration */
+ fc_lport_config(lp);
+
+ /* offload related configuration */
+ lp->crc_offload = 0;
+ lp->seq_offload = 0;
+ lp->lro_enabled = 0;
+ lp->lro_xid = 0;
+ lp->lso_max = 0;
+
+ return 0;
+}
+
+/**
+ * fcoe_netdev_config() - Set up netdev for SW FCoE
+ * @lp : ptr to the fc_lport
+ * @netdev : ptr to the associated netdevice struct
+ *
+ * Must be called after fcoe_lport_config() as it will use lport mutex
+ *
+ * Returns : 0 for success
+ */
+static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev)
+{
+ u32 mfs;
+ u64 wwnn, wwpn;
+ struct fcoe_softc *fc;
+ u8 flogi_maddr[ETH_ALEN];
+
+ /* Setup lport private data to point to fcoe softc */
+ fc = lport_priv(lp);
+ fc->lp = lp;
+ fc->real_dev = netdev;
+ fc->phys_dev = netdev;
+
+ /* Require support for get_pauseparam ethtool op. */
+ if (netdev->priv_flags & IFF_802_1Q_VLAN)
+ fc->phys_dev = vlan_dev_real_dev(netdev);
+
+ /* Do not support for bonding device */
+ if ((fc->real_dev->priv_flags & IFF_MASTER_ALB) ||
+ (fc->real_dev->priv_flags & IFF_SLAVE_INACTIVE) ||
+ (fc->real_dev->priv_flags & IFF_MASTER_8023AD)) {
+ return -EOPNOTSUPP;
+ }
+
+ /*
+ * Determine max frame size based on underlying device and optional
+ * user-configured limit. If the MFS is too low, fcoe_link_ok()
+ * will return 0, so do this first.
+ */
+ mfs = fc->real_dev->mtu - (sizeof(struct fcoe_hdr) +
+ sizeof(struct fcoe_crc_eof));
+ if (fc_set_mfs(lp, mfs))
+ return -EINVAL;
+
+ if (!fcoe_link_ok(lp))
+ lp->link_up = 1;
+
+ /* offload features support */
+ if (fc->real_dev->features & NETIF_F_SG)
+ lp->sg_supp = 1;
+
+#ifdef NETIF_F_FCOE_CRC
+ if (netdev->features & NETIF_F_FCOE_CRC) {
+ lp->crc_offload = 1;
+ printk(KERN_DEBUG "fcoe:%s supports FCCRC offload\n",
+ netdev->name);
+ }
+#endif
+#ifdef NETIF_F_FSO
+ if (netdev->features & NETIF_F_FSO) {
+ lp->seq_offload = 1;
+ lp->lso_max = netdev->gso_max_size;
+ printk(KERN_DEBUG "fcoe:%s supports LSO for max len 0x%x\n",
+ netdev->name, lp->lso_max);
+ }
+#endif
+ if (netdev->fcoe_ddp_xid) {
+ lp->lro_enabled = 1;
+ lp->lro_xid = netdev->fcoe_ddp_xid;
+ printk(KERN_DEBUG "fcoe:%s supports LRO for max xid 0x%x\n",
+ netdev->name, lp->lro_xid);
+ }
+ skb_queue_head_init(&fc->fcoe_pending_queue);
+ fc->fcoe_pending_queue_active = 0;
+
+ /* setup Source Mac Address */
+ memcpy(fc->ctl_src_addr, fc->real_dev->dev_addr,
+ fc->real_dev->addr_len);
+
+ wwnn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 1, 0);
+ fc_set_wwnn(lp, wwnn);
+ /* XXX - 3rd arg needs to be vlan id */
+ wwpn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 2, 0);
+ fc_set_wwpn(lp, wwpn);
+
+ /*
+ * Add FCoE MAC address as second unicast MAC address
+ * or enter promiscuous mode if not capable of listening
+ * for multiple unicast MACs.
+ */
+ rtnl_lock();
+ memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
+ dev_unicast_add(fc->real_dev, flogi_maddr, ETH_ALEN);
+ rtnl_unlock();
+
+ /*
+ * setup the receive function from ethernet driver
+ * on the ethertype for the given device
+ */
+ fc->fcoe_packet_type.func = fcoe_rcv;
+ fc->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
+ fc->fcoe_packet_type.dev = fc->real_dev;
+ dev_add_pack(&fc->fcoe_packet_type);
+
+ return 0;
+}
+
+/**
+ * fcoe_shost_config() - Sets up fc_lport->host
+ * @lp : ptr to the fc_lport
+ * @shost : ptr to the associated scsi host
+ * @dev : device associated to scsi host
+ *
+ * Must be called after fcoe_lport_config() and fcoe_netdev_config()
+ *
+ * Returns : 0 for success
+ */
+static int fcoe_shost_config(struct fc_lport *lp, struct Scsi_Host *shost,
+ struct device *dev)
+{
+ int rc = 0;
+
+ /* lport scsi host config */
+ lp->host = shost;
+
+ lp->host->max_lun = FCOE_MAX_LUN;
+ lp->host->max_id = FCOE_MAX_FCP_TARGET;
+ lp->host->max_channel = 0;
+ lp->host->transportt = scsi_transport_fcoe_sw;
+
+ /* add the new host to the SCSI-ml */
+ rc = scsi_add_host(lp->host, dev);
+ if (rc) {
+ FC_DBG("fcoe_shost_config:error on scsi_add_host\n");
+ return rc;
+ }
+ sprintf(fc_host_symbolic_name(lp->host), "%s v%s over %s",
+ FCOE_NAME, FCOE_VERSION,
+ fcoe_netdev(lp)->name);
+
+ return 0;
+}
+
+/**
+ * fcoe_em_config() - allocates em for this lport
+ * @lp: the port that em is to allocated for
+ *
+ * Returns : 0 on success
+ */
+static inline int fcoe_em_config(struct fc_lport *lp)
+{
+ BUG_ON(lp->emp);
+
+ lp->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3,
+ FCOE_MIN_XID, FCOE_MAX_XID);
+ if (!lp->emp)
+ return -ENOMEM;
+
+ return 0;
+}
+
+/**
+ * fcoe_if_destroy() - FCoE software HBA tear-down function
+ * @netdev: ptr to the associated net_device
+ *
+ * Returns: 0 if link is OK for use by FCoE.
+ */
+static int fcoe_if_destroy(struct net_device *netdev)
+{
+ struct fc_lport *lp = NULL;
+ struct fcoe_softc *fc;
+ u8 flogi_maddr[ETH_ALEN];
+
+ BUG_ON(!netdev);
+
+ printk(KERN_DEBUG "fcoe_if_destroy:interface on %s\n",
+ netdev->name);
+
+ lp = fcoe_hostlist_lookup(netdev);
+ if (!lp)
+ return -ENODEV;
+
+ fc = lport_priv(lp);
+
+ /* Logout of the fabric */
+ fc_fabric_logoff(lp);
+
+ /* Remove the instance from fcoe's list */
+ fcoe_hostlist_remove(lp);
+
+ /* Don't listen for Ethernet packets anymore */
+ dev_remove_pack(&fc->fcoe_packet_type);
+
+ /* Cleanup the fc_lport */
+ fc_lport_destroy(lp);
+ fc_fcp_destroy(lp);
+
+ /* Detach from the scsi-ml */
+ fc_remove_host(lp->host);
+ scsi_remove_host(lp->host);
+
+ /* There are no more rports or I/O, free the EM */
+ if (lp->emp)
+ fc_exch_mgr_free(lp->emp);
+
+ /* Delete secondary MAC addresses */
+ rtnl_lock();
+ memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
+ dev_unicast_delete(fc->real_dev, flogi_maddr, ETH_ALEN);
+ if (compare_ether_addr(fc->data_src_addr, (u8[6]) { 0 }))
+ dev_unicast_delete(fc->real_dev, fc->data_src_addr, ETH_ALEN);
+ rtnl_unlock();
+
+ /* Free the per-CPU revieve threads */
+ fcoe_percpu_clean(lp);
+
+ /* Free existing skbs */
+ fcoe_clean_pending_queue(lp);
+
+ /* Free memory used by statistical counters */
+ fc_lport_free_stats(lp);
+
+ /* Release the net_device and Scsi_Host */
+ dev_put(fc->real_dev);
+ scsi_host_put(lp->host);
+
+ return 0;
+}
+
+/*
+ * fcoe_ddp_setup - calls LLD's ddp_setup through net_device
+ * @lp: the corresponding fc_lport
+ * @xid: the exchange id for this ddp transfer
+ * @sgl: the scatterlist describing this transfer
+ * @sgc: number of sg items
+ *
+ * Returns : 0 no ddp
+ */
+static int fcoe_ddp_setup(struct fc_lport *lp, u16 xid,
+ struct scatterlist *sgl, unsigned int sgc)
+{
+ struct net_device *n = fcoe_netdev(lp);
+
+ if (n->netdev_ops && n->netdev_ops->ndo_fcoe_ddp_setup)
+ return n->netdev_ops->ndo_fcoe_ddp_setup(n, xid, sgl, sgc);
+
+ return 0;
+}
+
+/*
+ * fcoe_ddp_done - calls LLD's ddp_done through net_device
+ * @lp: the corresponding fc_lport
+ * @xid: the exchange id for this ddp transfer
+ *
+ * Returns : the length of data that have been completed by ddp
+ */
+static int fcoe_ddp_done(struct fc_lport *lp, u16 xid)
+{
+ struct net_device *n = fcoe_netdev(lp);
+
+ if (n->netdev_ops && n->netdev_ops->ndo_fcoe_ddp_done)
+ return n->netdev_ops->ndo_fcoe_ddp_done(n, xid);
+ return 0;
+}
+
+static struct libfc_function_template fcoe_libfc_fcn_templ = {
+ .frame_send = fcoe_xmit,
+ .ddp_setup = fcoe_ddp_setup,
+ .ddp_done = fcoe_ddp_done,
+};
+
+/**
+ * fcoe_if_create() - this function creates the fcoe interface
+ * @netdev: pointer the associated netdevice
+ *
+ * Creates fc_lport struct and scsi_host for lport, configures lport
+ * and starts fabric login.
+ *
+ * Returns : 0 on success
+ */
+static int fcoe_if_create(struct net_device *netdev)
+{
+ int rc;
+ struct fc_lport *lp = NULL;
+ struct fcoe_softc *fc;
+ struct Scsi_Host *shost;
+
+ BUG_ON(!netdev);
+
+ printk(KERN_DEBUG "fcoe_if_create:interface on %s\n",
+ netdev->name);
+
+ lp = fcoe_hostlist_lookup(netdev);
+ if (lp)
+ return -EEXIST;
+
+ shost = fcoe_host_alloc(&fcoe_shost_template,
+ sizeof(struct fcoe_softc));
+ if (!shost) {
+ FC_DBG("Could not allocate host structure\n");
+ return -ENOMEM;
+ }
+ lp = shost_priv(shost);
+ fc = lport_priv(lp);
+
+ /* configure fc_lport, e.g., em */
+ rc = fcoe_lport_config(lp);
+ if (rc) {
+ FC_DBG("Could not configure lport\n");
+ goto out_host_put;
+ }
+
+ /* configure lport network properties */
+ rc = fcoe_netdev_config(lp, netdev);
+ if (rc) {
+ FC_DBG("Could not configure netdev for lport\n");
+ goto out_host_put;
+ }
+
+ /* configure lport scsi host properties */
+ rc = fcoe_shost_config(lp, shost, &netdev->dev);
+ if (rc) {
+ FC_DBG("Could not configure shost for lport\n");
+ goto out_host_put;
+ }
+
+ /* lport exch manager allocation */
+ rc = fcoe_em_config(lp);
+ if (rc) {
+ FC_DBG("Could not configure em for lport\n");
+ goto out_host_put;
+ }
+
+ /* Initialize the library */
+ rc = fcoe_libfc_config(lp, &fcoe_libfc_fcn_templ);
+ if (rc) {
+ FC_DBG("Could not configure libfc for lport!\n");
+ goto out_lp_destroy;
+ }
+
+ /* add to lports list */
+ fcoe_hostlist_add(lp);
+
+ lp->boot_time = jiffies;
+
+ fc_fabric_login(lp);
+
+ dev_hold(netdev);
+
+ return rc;
+
+out_lp_destroy:
+ fc_exch_mgr_free(lp->emp); /* Free the EM */
+out_host_put:
+ scsi_host_put(lp->host);
+ return rc;
+}
+
+/**
+ * fcoe_if_init() - attach to scsi transport
+ *
+ * Returns : 0 on success
+ */
+static int __init fcoe_if_init(void)
+{
+ /* attach to scsi transport */
+ scsi_transport_fcoe_sw =
+ fc_attach_transport(&fcoe_transport_function);
+
+ if (!scsi_transport_fcoe_sw) {
+ printk(KERN_ERR "fcoe_init:fc_attach_transport() failed\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+/**
+ * fcoe_if_exit() - detach from scsi transport
+ *
+ * Returns : 0 on success
+ */
+int __exit fcoe_if_exit(void)
+{
+ fc_release_transport(scsi_transport_fcoe_sw);
+ return 0;
+}
+
/**
* fcoe_percpu_thread_create() - Create a receive thread for an online cpu
* @cpu: cpu index for the online cpu
rc = -ENODEV;
goto out_putdev;
}
- rc = fcoe_sw_destroy(netdev);
+ rc = fcoe_if_destroy(netdev);
if (rc) {
- printk(KERN_ERR "fcoe: fcoe_sw_destroy(%s) failed\n",
+ printk(KERN_ERR "fcoe: fcoe_if_destroy(%s) failed\n",
netdev->name);
rc = -EIO;
goto out_putdev;
}
fcoe_ethdrv_get(netdev);
- rc = fcoe_sw_create(netdev);
+ rc = fcoe_if_create(netdev);
if (rc) {
- printk(KERN_ERR "fcoe: fcoe_sw_create(%s) failed\n",
+ printk(KERN_ERR "fcoe: fcoe_if_create(%s) failed\n",
netdev->name);
fcoe_ethdrv_put(netdev);
rc = -EIO;
mod_timer(&fcoe_timer, jiffies + (10 * HZ));
- fcoe_sw_init();
+ fcoe_if_init();
return 0;
/* releases the associated fcoe hosts */
list_for_each_entry_safe(fc, tmp, &fcoe_hostlist, list)
- fcoe_sw_destroy(fc->real_dev);
+ fcoe_if_destroy(fc->real_dev);
unregister_hotcpu_notifier(&fcoe_cpu_notifier);
fcoe_percpu_thread_destroy(cpu);
}
- /* remove sw trasnport */
- fcoe_sw_exit();
+ /* detach from scsi transport */
+ fcoe_if_exit();
}
module_exit(fcoe_exit);
struct Scsi_Host *fcoe_host_alloc(struct scsi_host_template *, int);
int fcoe_libfc_config(struct fc_lport *, struct libfc_function_template *);
-
-/* fcoe sw hba */
-int __init fcoe_sw_init(void);
-int __exit fcoe_sw_exit(void);
-int fcoe_sw_create(struct net_device *);
-int fcoe_sw_destroy(struct net_device *);
#endif /* _LIBFCOE_H */
projects / platform / kernel / kernel-mfld-blackbay.git / commitdiff