/**
* 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);
}
static void fc_lport_enter_rft_id(struct fc_lport *lport)
{
struct fc_frame *fp;
struct fc_ns_fts *lps;
int i;
FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_RFT_ID);
lps = &lport->fcts;
i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]);
while (--i >= 0)
if (ntohl(lps->ff_type_map[i]) != 0)
break;
if (i < 0) {
fc_lport_enter_scr(lport);
return;
}
fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
sizeof(struct fc_ns_rft));
if (!fp) {
fc_lport_error(lport, fp);
return;
}
if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID,
fc_lport_rft_id_resp,
lport, lport->e_d_tov))
fc_lport_error(lport, fp);
}
static void fc_lport_enter_disabled(struct fc_lport *lport)
{
FC_LPORT_DBG(lport, "Entered disabled state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_DISABLED);
fc_lport_reset_locked(lport);
}
/**
* fc_lport_enter_ns() - register some object with the name server
* @lport: Fibre Channel local port to register
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
static void fc_lport_enter_ns(struct fc_lport *lport, enum fc_lport_state state)
{
struct fc_frame *fp;
enum fc_ns_req cmd;
int size = sizeof(struct fc_ct_hdr);
size_t len;
FC_LPORT_DBG(lport, "Entered %s state from %s state\n",
fc_lport_state_names[state],
fc_lport_state(lport));
fc_lport_state_enter(lport, state);
switch (state) {
case LPORT_ST_RNN_ID:
cmd = FC_NS_RNN_ID;
size += sizeof(struct fc_ns_rn_id);
break;
case LPORT_ST_RSNN_NN:
len = strnlen(fc_host_symbolic_name(lport->host), 255);
/* if there is no symbolic name, skip to RFT_ID */
if (!len)
return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
cmd = FC_NS_RSNN_NN;
size += sizeof(struct fc_ns_rsnn) + len;
break;
case LPORT_ST_RSPN_ID:
len = strnlen(fc_host_symbolic_name(lport->host), 255);
/* if there is no symbolic name, skip to RFT_ID */
if (!len)
return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
cmd = FC_NS_RSPN_ID;
size += sizeof(struct fc_ns_rspn) + len;
break;
case LPORT_ST_RFT_ID:
cmd = FC_NS_RFT_ID;
size += sizeof(struct fc_ns_rft);
break;
case LPORT_ST_RFF_ID:
cmd = FC_NS_RFF_ID;
size += sizeof(struct fc_ns_rff_id);
break;
default:
fc_lport_error(lport, NULL);
return;
}
fp = fc_frame_alloc(lport, size);
if (!fp) {
fc_lport_error(lport, fp);
return;
}
if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, cmd,
fc_lport_ns_resp,
lport, 3 * lport->r_a_tov))
fc_lport_error(lport, fp);
}
static void fc_lport_enter_ready(struct fc_lport *lport)
{
FC_LPORT_DBG(lport, "Entered READY from state %s\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_READY);
if (!lport->ptp_rp)
lport->tt.disc_start(fc_lport_disc_callback, lport);
}
static void fc_lport_enter_reset(struct fc_lport *lport)
{
FC_LPORT_DBG(lport, "Entered RESET state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_RESET);
fc_lport_reset_locked(lport);
if (lport->link_up)
fc_lport_enter_flogi(lport);
}
/**
* fc_lport_config() - Configure a fc_lport
* @lport: The local port to be configured
*/
int fc_lport_config(struct fc_lport *lport)
{
INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout);
mutex_init(&lport->lp_mutex);
fc_lport_state_enter(lport, LPORT_ST_DISABLED);
fc_lport_add_fc4_type(lport, FC_TYPE_FCP);
fc_lport_add_fc4_type(lport, FC_TYPE_CT);
return 0;
}
/**
* fc_rport_enter_ready() - Enter the ready state and start discovery
* @lport: The local port that is ready
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
static void fc_lport_enter_ready(struct fc_lport *lport)
{
FC_LPORT_DBG(lport, "Entered READY from state %s\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_READY);
if (lport->vport)
fc_vport_set_state(lport->vport, FC_VPORT_ACTIVE);
fc_vports_linkchange(lport);
if (!lport->ptp_rdata)
lport->tt.disc_start(fc_lport_disc_callback, lport);
}
/**
* fc_fabric_login() - Start the lport state machine
* @lport: The local port that should log into the fabric
*
* Locking Note: This function should not be called
* with the lport lock held.
*/
int fc_fabric_login(struct fc_lport *lport)
{
int rc = -1;
mutex_lock(&lport->lp_mutex);
if (lport->state == LPORT_ST_DISABLED ||
lport->state == LPORT_ST_LOGO) {
fc_lport_state_enter(lport, LPORT_ST_RESET);
fc_lport_enter_reset(lport);
rc = 0;
}
mutex_unlock(&lport->lp_mutex);
return rc;
}
/**
* fc_lport_enter_reset() - Reset the local port
* @lport: The local port to be reset
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
static void fc_lport_enter_reset(struct fc_lport *lport)
{
FC_LPORT_DBG(lport, "Entered RESET state from %s state\n",
fc_lport_state(lport));
if (lport->vport) {
if (lport->link_up)
fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING);
else
fc_vport_set_state(lport->vport, FC_VPORT_LINKDOWN);
}
fc_lport_state_enter(lport, LPORT_ST_RESET);
fc_vports_linkchange(lport);
fc_lport_reset_locked(lport);
if (lport->link_up)
fc_lport_enter_flogi(lport);
}
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);
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, ELS_FLOGI,
fc_lport_flogi_resp, lport, lport->e_d_tov))
fc_lport_error(lport, NULL);
}
static void fc_lport_enter_scr(struct fc_lport *lport)
{
struct fc_frame *fp;
FC_LPORT_DBG(lport, "Entered SCR state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_SCR);
fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr));
if (!fp) {
fc_lport_error(lport, fp);
return;
}
if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR,
fc_lport_scr_resp, lport, lport->e_d_tov))
fc_lport_error(lport, NULL);
}
static void fc_lport_enter_logo(struct fc_lport *lport)
{
struct fc_frame *fp;
struct fc_els_logo *logo;
FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_LOGO);
fp = fc_frame_alloc(lport, sizeof(*logo));
if (!fp) {
fc_lport_error(lport, fp);
return;
}
if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO,
fc_lport_logo_resp, lport, lport->e_d_tov))
fc_lport_error(lport, NULL);
}
static void fc_lport_enter_rpn_id(struct fc_lport *lport)
{
struct fc_frame *fp;
FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_RPN_ID);
fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
sizeof(struct fc_ns_rn_id));
if (!fp) {
fc_lport_error(lport, fp);
return;
}
if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RPN_ID,
fc_lport_rpn_id_resp,
lport, lport->e_d_tov))
fc_lport_error(lport, NULL);
}
/**
* fc_rport_enter_dns() - Create a fc_rport for the name server
* @lport: The local port requesting a remote port for the name server
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
static void fc_lport_enter_dns(struct fc_lport *lport)
{
struct fc_rport_priv *rdata;
FC_LPORT_DBG(lport, "Entered DNS state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_DNS);
mutex_lock(&lport->disc.disc_mutex);
rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV);
mutex_unlock(&lport->disc.disc_mutex);
if (!rdata)
goto err;
rdata->ops = &fc_lport_rport_ops;
lport->tt.rport_login(rdata);
return;
err:
fc_lport_error(lport, NULL);
}
static void fc_lport_enter_reset(struct fc_lport *lport)
{
FC_LPORT_DBG(lport, "Entered RESET state from %s state\n",
fc_lport_state(lport));
if (lport->state == LPORT_ST_DISABLED || lport->state == LPORT_ST_LOGO)
return;
if (lport->vport) {
if (lport->link_up)
fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING);
else
fc_vport_set_state(lport->vport, FC_VPORT_LINKDOWN);
}
fc_lport_state_enter(lport, LPORT_ST_RESET);
fc_host_post_event(lport->host, fc_get_event_number(),
FCH_EVT_LIPRESET, 0);
fc_vports_linkchange(lport);
fc_lport_reset_locked(lport);
if (lport->link_up)
fc_lport_enter_flogi(lport);
}
static void fc_lport_enter_ms(struct fc_lport *lport, enum fc_lport_state state)
{
struct fc_frame *fp;
enum fc_fdmi_req cmd;
int size = sizeof(struct fc_ct_hdr);
size_t len;
int numattrs;
FC_LPORT_DBG(lport, "Entered %s state from %s state\n",
fc_lport_state_names[state],
fc_lport_state(lport));
fc_lport_state_enter(lport, state);
switch (state) {
case LPORT_ST_RHBA:
cmd = FC_FDMI_RHBA;
numattrs = 10;
len = sizeof(struct fc_fdmi_rhba);
len -= sizeof(struct fc_fdmi_attr_entry);
len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
len += FC_FDMI_HBA_ATTR_MODEL_LEN;
len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
size += len;
break;
case LPORT_ST_RPA:
cmd = FC_FDMI_RPA;
numattrs = 6;
len = sizeof(struct fc_fdmi_rpa);
len -= sizeof(struct fc_fdmi_attr_entry);
len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
size += len;
break;
case LPORT_ST_DPRT:
cmd = FC_FDMI_DPRT;
len = sizeof(struct fc_fdmi_dprt);
size += len;
break;
case LPORT_ST_DHBA:
cmd = FC_FDMI_DHBA;
len = sizeof(struct fc_fdmi_dhba);
size += len;
break;
default:
fc_lport_error(lport, NULL);
return;
}
FC_LPORT_DBG(lport, "Cmd=0x%x Len %d size %d\n",
cmd, (int)len, size);
fp = fc_frame_alloc(lport, size);
if (!fp) {
fc_lport_error(lport, fp);
return;
}
if (!lport->tt.elsct_send(lport, FC_FID_MGMT_SERV, fp, cmd,
fc_lport_ms_resp,
lport, 3 * lport->r_a_tov))
fc_lport_error(lport, fp);
}
