linux-imx

/*

 *  QLogic FCoE Offload Driver

 *  Copyright (c) 2016-2018 Cavium Inc.

 *

 *  This software is available under the terms of the GNU General Public License

 *  (GPL) Version 2, available from the file COPYING in the main directory of

 *  this source tree.

 */

#include "qedf.h"

​

/* It's assumed that the lock is held when calling this function. */

static int qedf_initiate_els(struct qedf_rport *fcport, unsigned int op,

    void *data, uint32_t data_len,

    void (*cb_func)(struct qedf_els_cb_arg *cb_arg),

    struct qedf_els_cb_arg *cb_arg, uint32_t timer_msec)

{

    struct qedf_ctx *qedf;

    struct fc_lport *lport;

    struct qedf_ioreq *els_req;

    struct qedf_mp_req *mp_req;

    struct fc_frame_header *fc_hdr;

    struct e4_fcoe_task_context *task;

    int rc = 0;

    uint32_t did, sid;

    uint16_t xid;

    uint32_t start_time = jiffies / HZ;

    uint32_t current_time;

    struct fcoe_wqe *sqe;

    unsigned long flags;

    u16 sqe_idx;

​

    if (!fcport) {

        QEDF_ERR(NULL, "fcport is NULL");

        rc = -EINVAL;

        goto els_err;

    }

​

    qedf = fcport->qedf;

    lport = qedf->lport;

​

    QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending ELS\n");

​

    rc = fc_remote_port_chkready(fcport->rport);

    if (rc) {

        QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: rport not ready\n", op);

        rc = -EAGAIN;

        goto els_err;

    }

    if (lport->state != LPORT_ST_READY || !(lport->link_up)) {

        QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: link is not ready\n",

              op);

        rc = -EAGAIN;

        goto els_err;

    }

​

    if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {

        QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: fcport not ready\n", op);

        rc = -EINVAL;

        goto els_err;

    }

​

retry_els:

    els_req = qedf_alloc_cmd(fcport, QEDF_ELS);