/**
* fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager
* @lport: Fibre Channel local port to be logged in to the fabric
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
void fc_lport_enter_flogi(struct fc_lport *lport)
{
struct fc_frame *fp;
FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_FLOGI);
if (lport->point_to_multipoint) {
if (lport->port_id)
fc_lport_enter_ready(lport);
return;
}
fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
if (!fp)
return fc_lport_error(lport, fp);
if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
lport->vport ? ELS_FDISC : ELS_FLOGI,
fc_lport_flogi_resp, lport,
lport->vport ? 2 * lport->r_a_tov :
lport->e_d_tov))
fc_lport_error(lport, NULL);
}
/**
* fc_lport_ptp_setup() - Create an rport for point-to-point mode
* @lport: The lport to attach the ptp rport to
* @remote_fid: The FID of the ptp rport
* @remote_wwpn: The WWPN of the ptp rport
* @remote_wwnn: The WWNN of the ptp rport
*/
static void fc_lport_ptp_setup(struct fc_lport *lport,
u32 remote_fid, u64 remote_wwpn,
u64 remote_wwnn)
{
mutex_lock(&lport->disc.disc_mutex);
if (lport->ptp_rdata)
lport->tt.rport_logoff(lport->ptp_rdata);
lport->ptp_rdata = lport->tt.rport_create(lport, remote_fid);
lport->ptp_rdata->ids.port_name = remote_wwpn;
lport->ptp_rdata->ids.node_name = remote_wwnn;
mutex_unlock(&lport->disc.disc_mutex);
lport->tt.rport_login(lport->ptp_rdata);
fc_lport_enter_ready(lport);
}
/**
* fc_lport_set_port_id() - set the local port Port ID for point-to-multipoint
* @lport: The local port which will have its Port ID set.
* @port_id: The new port ID.
*
* Called by the lower-level driver when transport sets the local port_id.
* This is used in VN_port to VN_port mode for FCoE, and causes FLOGI and
* discovery to be skipped.
*/
void fc_lport_set_local_id(struct fc_lport *lport, u32 port_id)
{
mutex_lock(&lport->lp_mutex);
fc_lport_set_port_id(lport, port_id, NULL);
switch (lport->state) {
case LPORT_ST_RESET:
case LPORT_ST_FLOGI:
if (port_id)
fc_lport_enter_ready(lport);
break;
default:
break;
}
mutex_unlock(&lport->lp_mutex);
}
/**
* fc_lport_scr_resp() - Handle response to State Change Register (SCR) request
* @sp: current sequence in SCR exchange
* @fp: response frame
* @lp_arg: Fibre Channel lport port instance that sent the registration request
*
* Locking Note: This function will be called without the lport lock
* held, but it will lock, call an _enter_* function or fc_lport_error
* and then unlock the lport.
*/
static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp,
void *lp_arg)
{
struct fc_lport *lport = lp_arg;
u8 op;
FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
if (lport->state != LPORT_ST_SCR) {
FC_LPORT_DBG(lport, "Received a SCR response, but in state "
"%s\n", fc_lport_state(lport));
if (IS_ERR(fp))
goto err;
goto out;
}
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC)
fc_lport_enter_ready(lport);
else
fc_lport_error(lport, fp);
out:
fc_frame_free(fp);
err:
mutex_unlock(&lport->lp_mutex);
}