diff options
Diffstat (limited to 'drivers/scsi/fcoe/fcoe_sw.c')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe_sw.c | 123 |
1 files changed, 95 insertions, 28 deletions
diff --git a/drivers/scsi/fcoe/fcoe_sw.c b/drivers/scsi/fcoe/fcoe_sw.c index dc4cd5e25760..2bbbe3c0cc7b 100644 --- a/drivers/scsi/fcoe/fcoe_sw.c +++ b/drivers/scsi/fcoe/fcoe_sw.c @@ -104,19 +104,19 @@ static struct scsi_host_template fcoe_sw_shost_template = { .max_sectors = 0xffff, }; -/* - * fcoe_sw_lport_config - sets up the fc_lport +/** + * 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) { int i = 0; - lp->link_status = 0; + 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; @@ -133,19 +133,24 @@ static int fcoe_sw_lport_config(struct fc_lport *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 - sets up fcoe_softc for lport and network - * related properties +/** + * 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) { @@ -181,16 +186,36 @@ static int fcoe_sw_netdev_config(struct fc_lport *lp, struct net_device *netdev) if (fc_set_mfs(lp, mfs)) return -EINVAL; - lp->link_status = ~FC_PAUSE & ~FC_LINK_UP; if (!fcoe_link_ok(lp)) - lp->link_status |= FC_LINK_UP; + 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, @@ -224,16 +249,15 @@ static int fcoe_sw_netdev_config(struct fc_lport *lp, struct net_device *netdev) return 0; } -/* - * fcoe_sw_shost_config - sets up fc_lport->host +/** + * 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() + * 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) @@ -261,8 +285,8 @@ static int fcoe_sw_shost_config(struct fc_lport *lp, struct Scsi_Host *shost, return 0; } -/* - * fcoe_sw_em_config - allocates em for this lport +/** + * fcoe_sw_em_config() - allocates em for this lport * @lp: the port that em is to allocated for * * Returns : 0 on success @@ -279,8 +303,8 @@ static inline int fcoe_sw_em_config(struct fc_lport *lp) return 0; } -/* - * fcoe_sw_destroy - FCoE software HBA tear-down function +/** + * 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. @@ -301,7 +325,7 @@ static int fcoe_sw_destroy(struct net_device *netdev) if (!lp) return -ENODEV; - fc = fcoe_softc(lp); + fc = lport_priv(lp); /* Logout of the fabric */ fc_fabric_logoff(lp); @@ -349,12 +373,50 @@ static int fcoe_sw_destroy(struct net_device *netdev) 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 +/** + * 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 @@ -440,8 +502,8 @@ out_host_put: return rc; } -/* - * fcoe_sw_match - the fcoe sw transport match function +/** + * fcoe_sw_match() - The FCoE SW transport match function * * Returns : false always */ @@ -461,8 +523,8 @@ struct fcoe_transport fcoe_sw_transport = { .device = 0xffff, }; -/* - * fcoe_sw_init - registers fcoe_sw_transport +/** + * fcoe_sw_init() - Registers fcoe_sw_transport * * Returns : 0 on success */ @@ -471,17 +533,22 @@ 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; } + + mutex_init(&fcoe_sw_transport.devlock); + INIT_LIST_HEAD(&fcoe_sw_transport.devlist); + /* register sw transport */ fcoe_transport_register(&fcoe_sw_transport); return 0; } -/* - * fcoe_sw_exit - unregisters fcoe_sw_transport +/** + * fcoe_sw_exit() - Unregisters fcoe_sw_transport * * Returns : 0 on success */ |