From patchwork Tue Jun 1 23:55:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Smart X-Patchwork-Id: 451689 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22531C47080 for ; Tue, 1 Jun 2021 23:55:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0C55461245 for ; Tue, 1 Jun 2021 23:55:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235213AbhFAX5f (ORCPT ); Tue, 1 Jun 2021 19:57:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235249AbhFAX5W (ORCPT ); Tue, 1 Jun 2021 19:57:22 -0400 Received: from mail-pg1-x533.google.com (mail-pg1-x533.google.com [IPv6:2607:f8b0:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B814C06175F for ; Tue, 1 Jun 2021 16:55:39 -0700 (PDT) Received: by mail-pg1-x533.google.com with SMTP id 6so732639pgk.5 for ; Tue, 01 Jun 2021 16:55:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HD2qz4VwalL2YjbW40i44x1+ybIaUrILjpl3Tq7MN/o=; b=NjgRg8BxMqJAjmpiQGXgherBU7GZgLXomDrar6PVlvD52Xw46f35FhKlYjSd9gW9Vm CPH4IkxqnyjpZuriwn7oNLtj3uJf7njsjW4fKOXGtNwmPT1Ipg3XDW9yoTYa/xHJlzBh It8dUYzPc7H8bc/8ZUjVetIKbc5xNiJec5Zw1cGLmcXRcGikdH44d06NPA49z3RwFFmR I/obCuxGbmFAVPOyYqcnuthVgvpaIvUZibUdYu53bnoKZSuS75lMAs+hmcCPTHmiBVYh raG9fOxwSSqGX1gL23v6kTg/o+6d9HzTqxU7t0Aw3IAYdFYh1UgvCb/fc4lcfFh+MuNj VDrg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HD2qz4VwalL2YjbW40i44x1+ybIaUrILjpl3Tq7MN/o=; b=MNn+PRFQAdEmu6LHYDJpMClW+84i7fxDKl7GB1qEFZ8lux9DlF4hCEcl1kn9ZJG/n6 VejZ8Ka7uVmnSNPab8LljSvTkadjWP4o4kcALW5MGOb6me/jnaz7NpKTJfYhF5+2sAKq dAi3O3/kZd59Sq3GqsJYjwpEe6emSTEWFOuPxZZWvt+rrTAvJerPHJyQhQaLO8gUdXkx tMUkCgy9QLsd054yRLTo6jIoEszrkwTOZ9V34A4zXWdpb7wUpvdWPXEPhGKi+B7EGpAz 5O1oSznIceSsDR6y1yRv1hz9Ml/iS/bpYRrrMFe3T2CmdCAohnYGuMN2hDYKo0iggfdI nyBQ== X-Gm-Message-State: AOAM532juZfhKL/Z10AoAS8wzFZOyGwlCxpqw3VHKiq8YGdacO9AOJdq h68zrsOxMQY4mO7dUNaR7cQK1sqFwH4= X-Google-Smtp-Source: ABdhPJxi3iTrrufEXPjeNMs0edt7pGPX+Q7ZtNOav6YFd/18Zg3Sde0I+wsvLtDgLe116qy0hwd3Xg== X-Received: by 2002:aa7:8ec8:0:b029:2ea:32b:9202 with SMTP id b8-20020aa78ec80000b02902ea032b9202mr5153249pfr.36.1622591738568; Tue, 01 Jun 2021 16:55:38 -0700 (PDT) Received: from localhost.localdomain ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id v15sm13915357pfm.187.2021.06.01.16.55.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Jun 2021 16:55:38 -0700 (PDT) From: James Smart To: linux-scsi@vger.kernel.org Cc: James Smart , Ram Vegesna , Hannes Reinecke , Daniel Wagner Subject: [PATCH v9 26/31] elx: efct: Hardware IO submission routines Date: Tue, 1 Jun 2021 16:55:07 -0700 Message-Id: <20210601235512.20104-27-jsmart2021@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210601235512.20104-1-jsmart2021@gmail.com> References: <20210601235512.20104-1-jsmart2021@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org This patch continues the efct driver population. This patch adds driver definitions for: Routines that write IO to Work queue, send SRRs and raw frames. Co-developed-by: Ram Vegesna Signed-off-by: Ram Vegesna Signed-off-by: James Smart Reviewed-by: Hannes Reinecke Reviewed-by: Daniel Wagner --- v9: Non-functional changes: Remove EFC_SUCCESS/EFC_FAIL defines and use 0 and -Exxx errno values. Remove EFCT_xxx/EFCT_HW_RTN_xxx defines and use appropriate -Exxx errno values. Correct indentation on line continuations. --- drivers/scsi/elx/efct/efct_hw.c | 511 ++++++++++++++++++++++++++++++++ drivers/scsi/elx/efct/efct_hw.h | 14 + 2 files changed, 525 insertions(+) diff --git a/drivers/scsi/elx/efct/efct_hw.c b/drivers/scsi/elx/efct/efct_hw.c index f195bb9c9cbf..ffe7dd106811 100644 --- a/drivers/scsi/elx/efct/efct_hw.c +++ b/drivers/scsi/elx/efct/efct_hw.c @@ -2491,3 +2491,514 @@ efct_hw_flush(struct efct_hw *hw) return 0; } + +int +efct_hw_wq_write(struct hw_wq *wq, struct efct_hw_wqe *wqe) +{ + int rc = 0; + unsigned long flags = 0; + + spin_lock_irqsave(&wq->queue->lock, flags); + if (list_empty(&wq->pending_list)) { + if (wq->free_count > 0) { + rc = _efct_hw_wq_write(wq, wqe); + } else { + INIT_LIST_HEAD(&wqe->list_entry); + list_add_tail(&wqe->list_entry, &wq->pending_list); + wq->wq_pending_count++; + } + + spin_unlock_irqrestore(&wq->queue->lock, flags); + return rc; + } + + INIT_LIST_HEAD(&wqe->list_entry); + list_add_tail(&wqe->list_entry, &wq->pending_list); + wq->wq_pending_count++; + while (wq->free_count > 0) { + wqe = list_first_entry(&wq->pending_list, struct efct_hw_wqe, + list_entry); + if (!wqe) + break; + + list_del_init(&wqe->list_entry); + rc = _efct_hw_wq_write(wq, wqe); + if (rc) + break; + + if (wqe->abort_wqe_submit_needed) { + wqe->abort_wqe_submit_needed = false; + efct_hw_fill_abort_wqe(wq->hw, wqe); + + INIT_LIST_HEAD(&wqe->list_entry); + list_add_tail(&wqe->list_entry, &wq->pending_list); + wq->wq_pending_count++; + } + } + + spin_unlock_irqrestore(&wq->queue->lock, flags); + + return rc; +} + +int +efct_efc_bls_send(struct efc *efc, u32 type, struct sli_bls_params *bls) +{ + struct efct *efct = efc->base; + + return efct_hw_bls_send(efct, type, bls, NULL, NULL); +} + +int +efct_hw_bls_send(struct efct *efct, u32 type, struct sli_bls_params *bls_params, + void *cb, void *arg) +{ + struct efct_hw *hw = &efct->hw; + struct efct_hw_io *hio; + struct sli_bls_payload bls; + int rc; + + if (hw->state != EFCT_HW_STATE_ACTIVE) { + efc_log_err(hw->os, + "cannot send BLS, HW state=%d\n", hw->state); + return -EIO; + } + + hio = efct_hw_io_alloc(hw); + if (!hio) { + efc_log_err(hw->os, "HIO allocation failed\n"); + return -EIO; + } + + hio->done = cb; + hio->arg = arg; + + bls_params->xri = hio->indicator; + bls_params->tag = hio->reqtag; + + if (type == FC_RCTL_BA_ACC) { + hio->type = EFCT_HW_BLS_ACC; + bls.type = SLI4_SLI_BLS_ACC; + memcpy(&bls.u.acc, bls_params->payload, sizeof(bls.u.acc)); + } else { + hio->type = EFCT_HW_BLS_RJT; + bls.type = SLI4_SLI_BLS_RJT; + memcpy(&bls.u.rjt, bls_params->payload, sizeof(bls.u.rjt)); + } + + bls.ox_id = cpu_to_le16(bls_params->ox_id); + bls.rx_id = cpu_to_le16(bls_params->rx_id); + + if (sli_xmit_bls_rsp64_wqe(&hw->sli, hio->wqe.wqebuf, + &bls, bls_params)) { + efc_log_err(hw->os, "XMIT_BLS_RSP64 WQE error\n"); + return -EIO; + } + + hio->xbusy = true; + + /* + * Add IO to active io wqe list before submitting, in case the + * wcqe processing preempts this thread. + */ + hio->wq->use_count++; + rc = efct_hw_wq_write(hio->wq, &hio->wqe); + if (rc >= 0) { + /* non-negative return is success */ + rc = 0; + } else { + /* failed to write wqe, remove from active wqe list */ + efc_log_err(hw->os, + "sli_queue_write failed: %d\n", rc); + hio->xbusy = false; + } + + return rc; +} + +static int +efct_els_ssrs_send_cb(struct efct_hw_io *hio, u32 length, int status, + u32 ext_status, void *arg) +{ + struct efc_disc_io *io = arg; + + efc_disc_io_complete(io, length, status, ext_status); + return 0; +} + +static inline void +efct_fill_els_params(struct efc_disc_io *io, struct sli_els_params *params) +{ + u8 *cmd = io->req.virt; + + params->cmd = *cmd; + params->s_id = io->s_id; + params->d_id = io->d_id; + params->ox_id = io->iparam.els.ox_id; + params->rpi = io->rpi; + params->vpi = io->vpi; + params->rpi_registered = io->rpi_registered; + params->xmit_len = io->xmit_len; + params->rsp_len = io->rsp_len; + params->timeout = io->iparam.els.timeout; +} + +static inline void +efct_fill_ct_params(struct efc_disc_io *io, struct sli_ct_params *params) +{ + params->r_ctl = io->iparam.ct.r_ctl; + params->type = io->iparam.ct.type; + params->df_ctl = io->iparam.ct.df_ctl; + params->d_id = io->d_id; + params->ox_id = io->iparam.ct.ox_id; + params->rpi = io->rpi; + params->vpi = io->vpi; + params->rpi_registered = io->rpi_registered; + params->xmit_len = io->xmit_len; + params->rsp_len = io->rsp_len; + params->timeout = io->iparam.ct.timeout; +} + +/** + * efct_els_hw_srrs_send() - Send a single request and response cmd. + * @efc: efc library structure + * @io: Discovery IO used to hold els and ct cmd context. + * + * This routine supports communication sequences consisting of a single + * request and single response between two endpoints. Examples include: + * - Sending an ELS request. + * - Sending an ELS response - To send an ELS response, the caller must provide + * the OX_ID from the received request. + * - Sending a FC Common Transport (FC-CT) request - To send a FC-CT request, + * the caller must provide the R_CTL, TYPE, and DF_CTL + * values to place in the FC frame header. + * + * Return: Status of the request. + */ +int +efct_els_hw_srrs_send(struct efc *efc, struct efc_disc_io *io) +{ + struct efct *efct = efc->base; + struct efct_hw_io *hio; + struct efct_hw *hw = &efct->hw; + struct efc_dma *send = &io->req; + struct efc_dma *receive = &io->rsp; + struct sli4_sge *sge = NULL; + int rc = 0; + u32 len = io->xmit_len; + u32 sge0_flags; + u32 sge1_flags; + + hio = efct_hw_io_alloc(hw); + if (!hio) { + pr_err("HIO alloc failed\n"); + return -EIO; + } + + if (hw->state != EFCT_HW_STATE_ACTIVE) { + efc_log_debug(hw->os, + "cannot send SRRS, HW state=%d\n", hw->state); + return -EIO; + } + + hio->done = efct_els_ssrs_send_cb; + hio->arg = io; + + sge = hio->sgl->virt; + + /* clear both SGE */ + memset(hio->sgl->virt, 0, 2 * sizeof(struct sli4_sge)); + + sge0_flags = le32_to_cpu(sge[0].dw2_flags); + sge1_flags = le32_to_cpu(sge[1].dw2_flags); + if (send->size) { + sge[0].buffer_address_high = + cpu_to_le32(upper_32_bits(send->phys)); + sge[0].buffer_address_low = + cpu_to_le32(lower_32_bits(send->phys)); + + sge0_flags |= (SLI4_SGE_TYPE_DATA << SLI4_SGE_TYPE_SHIFT); + + sge[0].buffer_length = cpu_to_le32(len); + } + + if (io->io_type == EFC_DISC_IO_ELS_REQ || + io->io_type == EFC_DISC_IO_CT_REQ) { + sge[1].buffer_address_high = + cpu_to_le32(upper_32_bits(receive->phys)); + sge[1].buffer_address_low = + cpu_to_le32(lower_32_bits(receive->phys)); + + sge1_flags |= (SLI4_SGE_TYPE_DATA << SLI4_SGE_TYPE_SHIFT); + sge1_flags |= SLI4_SGE_LAST; + + sge[1].buffer_length = cpu_to_le32(receive->size); + } else { + sge0_flags |= SLI4_SGE_LAST; + } + + sge[0].dw2_flags = cpu_to_le32(sge0_flags); + sge[1].dw2_flags = cpu_to_le32(sge1_flags); + + switch (io->io_type) { + case EFC_DISC_IO_ELS_REQ: { + struct sli_els_params els_params; + + hio->type = EFCT_HW_ELS_REQ; + efct_fill_els_params(io, &els_params); + els_params.xri = hio->indicator; + els_params.tag = hio->reqtag; + + if (sli_els_request64_wqe(&hw->sli, hio->wqe.wqebuf, hio->sgl, + &els_params)) { + efc_log_err(hw->os, "REQ WQE error\n"); + rc = -EIO; + } + break; + } + case EFC_DISC_IO_ELS_RESP: { + struct sli_els_params els_params; + + hio->type = EFCT_HW_ELS_RSP; + efct_fill_els_params(io, &els_params); + els_params.xri = hio->indicator; + els_params.tag = hio->reqtag; + if (sli_xmit_els_rsp64_wqe(&hw->sli, hio->wqe.wqebuf, send, + &els_params)){ + efc_log_err(hw->os, "RSP WQE error\n"); + rc = -EIO; + } + break; + } + case EFC_DISC_IO_CT_REQ: { + struct sli_ct_params ct_params; + + hio->type = EFCT_HW_FC_CT; + efct_fill_ct_params(io, &ct_params); + ct_params.xri = hio->indicator; + ct_params.tag = hio->reqtag; + if (sli_gen_request64_wqe(&hw->sli, hio->wqe.wqebuf, hio->sgl, + &ct_params)){ + efc_log_err(hw->os, "GEN WQE error\n"); + rc = -EIO; + } + break; + } + case EFC_DISC_IO_CT_RESP: { + struct sli_ct_params ct_params; + + hio->type = EFCT_HW_FC_CT_RSP; + efct_fill_ct_params(io, &ct_params); + ct_params.xri = hio->indicator; + ct_params.tag = hio->reqtag; + if (sli_xmit_sequence64_wqe(&hw->sli, hio->wqe.wqebuf, hio->sgl, + &ct_params)){ + efc_log_err(hw->os, "XMIT SEQ WQE error\n"); + rc = -EIO; + } + break; + } + default: + efc_log_err(hw->os, "bad SRRS type %#x\n", io->io_type); + rc = -EIO; + } + + if (rc == 0) { + hio->xbusy = true; + + /* + * Add IO to active io wqe list before submitting, in case the + * wcqe processing preempts this thread. + */ + hio->wq->use_count++; + rc = efct_hw_wq_write(hio->wq, &hio->wqe); + if (rc >= 0) { + /* non-negative return is success */ + rc = 0; + } else { + /* failed to write wqe, remove from active wqe list */ + efc_log_err(hw->os, + "sli_queue_write failed: %d\n", rc); + hio->xbusy = false; + } + } + + return rc; +} + +int +efct_hw_io_send(struct efct_hw *hw, enum efct_hw_io_type type, + struct efct_hw_io *io, union efct_hw_io_param_u *iparam, + void *cb, void *arg) +{ + int rc = 0; + bool send_wqe = true; + + if (!io) { + pr_err("bad parm hw=%p io=%p\n", hw, io); + return -EIO; + } + + if (hw->state != EFCT_HW_STATE_ACTIVE) { + efc_log_err(hw->os, "cannot send IO, HW state=%d\n", hw->state); + return -EIO; + } + + /* + * Save state needed during later stages + */ + io->type = type; + io->done = cb; + io->arg = arg; + + /* + * Format the work queue entry used to send the IO + */ + switch (type) { + case EFCT_HW_IO_TARGET_WRITE: { + u16 *flags = &iparam->fcp_tgt.flags; + struct fcp_txrdy *xfer = io->xfer_rdy.virt; + + /* + * Fill in the XFER_RDY for IF_TYPE 0 devices + */ + xfer->ft_data_ro = cpu_to_be32(iparam->fcp_tgt.offset); + xfer->ft_burst_len = cpu_to_be32(iparam->fcp_tgt.xmit_len); + + if (io->xbusy) + *flags |= SLI4_IO_CONTINUATION; + else + *flags &= ~SLI4_IO_CONTINUATION; + iparam->fcp_tgt.xri = io->indicator; + iparam->fcp_tgt.tag = io->reqtag; + + if (sli_fcp_treceive64_wqe(&hw->sli, io->wqe.wqebuf, + &io->def_sgl, io->first_data_sge, + SLI4_CQ_DEFAULT, + 0, 0, &iparam->fcp_tgt)) { + efc_log_err(hw->os, "TRECEIVE WQE error\n"); + rc = -EIO; + } + break; + } + case EFCT_HW_IO_TARGET_READ: { + u16 *flags = &iparam->fcp_tgt.flags; + + if (io->xbusy) + *flags |= SLI4_IO_CONTINUATION; + else + *flags &= ~SLI4_IO_CONTINUATION; + + iparam->fcp_tgt.xri = io->indicator; + iparam->fcp_tgt.tag = io->reqtag; + + if (sli_fcp_tsend64_wqe(&hw->sli, io->wqe.wqebuf, + &io->def_sgl, io->first_data_sge, + SLI4_CQ_DEFAULT, + 0, 0, &iparam->fcp_tgt)) { + efc_log_err(hw->os, "TSEND WQE error\n"); + rc = -EIO; + } + break; + } + case EFCT_HW_IO_TARGET_RSP: { + u16 *flags = &iparam->fcp_tgt.flags; + + if (io->xbusy) + *flags |= SLI4_IO_CONTINUATION; + else + *flags &= ~SLI4_IO_CONTINUATION; + + iparam->fcp_tgt.xri = io->indicator; + iparam->fcp_tgt.tag = io->reqtag; + + if (sli_fcp_trsp64_wqe(&hw->sli, io->wqe.wqebuf, + &io->def_sgl, SLI4_CQ_DEFAULT, + 0, &iparam->fcp_tgt)) { + efc_log_err(hw->os, "TRSP WQE error\n"); + rc = -EIO; + } + + break; + } + default: + efc_log_err(hw->os, "unsupported IO type %#x\n", type); + rc = -EIO; + } + + if (send_wqe && rc == 0) { + io->xbusy = true; + + /* + * Add IO to active io wqe list before submitting, in case the + * wcqe processing preempts this thread. + */ + hw->tcmd_wq_submit[io->wq->instance]++; + io->wq->use_count++; + rc = efct_hw_wq_write(io->wq, &io->wqe); + if (rc >= 0) { + /* non-negative return is success */ + rc = 0; + } else { + /* failed to write wqe, remove from active wqe list */ + efc_log_err(hw->os, + "sli_queue_write failed: %d\n", rc); + io->xbusy = false; + } + } + + return rc; +} + +int +efct_hw_send_frame(struct efct_hw *hw, struct fc_frame_header *hdr, + u8 sof, u8 eof, struct efc_dma *payload, + struct efct_hw_send_frame_context *ctx, + void (*callback)(void *arg, u8 *cqe, int status), + void *arg) +{ + int rc; + struct efct_hw_wqe *wqe; + u32 xri; + struct hw_wq *wq; + + wqe = &ctx->wqe; + + /* populate the callback object */ + ctx->hw = hw; + + /* Fetch and populate request tag */ + ctx->wqcb = efct_hw_reqtag_alloc(hw, callback, arg); + if (!ctx->wqcb) { + efc_log_err(hw->os, "can't allocate request tag\n"); + return -ENOSPC; + } + + wq = hw->hw_wq[0]; + + /* Set XRI and RX_ID in the header based on which WQ, and which + * send_frame_io we are using + */ + xri = wq->send_frame_io->indicator; + + /* Build the send frame WQE */ + rc = sli_send_frame_wqe(&hw->sli, wqe->wqebuf, + sof, eof, (u32 *)hdr, payload, payload->len, + EFCT_HW_SEND_FRAME_TIMEOUT, xri, + ctx->wqcb->instance_index); + if (rc) { + efc_log_err(hw->os, "sli_send_frame_wqe failed: %d\n", rc); + return -EIO; + } + + /* Write to WQ */ + rc = efct_hw_wq_write(wq, wqe); + if (rc) { + efc_log_err(hw->os, "efct_hw_wq_write failed: %d\n", rc); + return -EIO; + } + + wq->use_count++; + + return 0; +} diff --git a/drivers/scsi/elx/efct/efct_hw.h b/drivers/scsi/elx/efct/efct_hw.h index a2e4ea79e239..b9e7f5b4115b 100644 --- a/drivers/scsi/elx/efct/efct_hw.h +++ b/drivers/scsi/elx/efct/efct_hw.h @@ -690,5 +690,19 @@ int efct_hw_process(struct efct_hw *hw, u32 vector, u32 max_isr_time_msec); int efct_hw_queue_hash_find(struct efct_queue_hash *hash, u16 id); +int efct_hw_wq_write(struct hw_wq *wq, struct efct_hw_wqe *wqe); +int +efct_hw_send_frame(struct efct_hw *hw, struct fc_frame_header *hdr, + u8 sof, u8 eof, struct efc_dma *payload, + struct efct_hw_send_frame_context *ctx, + void (*callback)(void *arg, u8 *cqe, int status), + void *arg); +int +efct_els_hw_srrs_send(struct efc *efc, struct efc_disc_io *io); +int +efct_efc_bls_send(struct efc *efc, u32 type, struct sli_bls_params *bls); +int +efct_hw_bls_send(struct efct *efct, u32 type, struct sli_bls_params *bls_params, + void *cb, void *arg); #endif /* __EFCT_H__ */