cxgb4i v5: iscsi driver
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From: Mike Christie on 11 Aug 2010 14:40 On 08/09/2010 12:53 PM, kxie(a)chelsio.com wrote: > + > +static void *t4_uld_add(const struct cxgb4_lld_info *lldi) > +{ > + struct cxgbi_device *cdev; > + struct port_info *pi; > + int i, rc; > + > + cxgb4i_log_info("%s", version); > + > + cdev = cxgbi_device_register(sizeof(*lldi), lldi->nports); > + if (!cdev) { > + cxgb4i_log_info("t4 device 0x%p, register failed.\n", lldi); > + return NULL; > + } > + cxgb4i_log_debug(1<< CXGBI_DBG_DEV, > + "t4 0x%p,0x%x, ports %u,%s, chan %u, q %u,%u, wr %u.\n", > + cdev, lldi->adapter_type, lldi->nports, > + lldi->ports[0]->name, lldi->nchan, lldi->ntxq, > + lldi->nrxq, lldi->wr_cred); > + for (i = 0; i< lldi->nrxq; i++) > + cxgb4i_log_debug(1<< CXGBI_DBG_DEV, > + "t4 0x%p, rxq id #%d: %u.\n", > + cdev, i, lldi->rxq_ids[i]); > + > + memcpy(cxgbi_cdev_priv(cdev), lldi, sizeof(*lldi)); > + cdev->flags = CXGBI_FLAG_DEV_T4; > + cdev->pdev = lldi->pdev; > + cdev->ports = lldi->ports; > + cdev->nports = lldi->nports; > + cdev->mtus = lldi->mtus; > + cdev->nmtus = NMTUS; > + cdev->snd_win = cxgb4i_snd_win; > + cdev->rcv_win = cxgb4i_rcv_win; > + cdev->rx_credit_thres = cxgb4i_rx_credit_thres; > + cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN; > + cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr); > + cdev->itp =&cxgb4i_iscsi_transport; > + > + rc = cxgbi_iscsi_init(cdev); > + if (rc) { > + cxgb4i_log_info("t4 0x%p iscsi init failed\n", cdev); > + goto err_out; > + } For each LLD (cxgb3i and cxgb4i) could it get called more than once? I mean if you had multiple cxgb3i HBAs could it get called once for each or is it called just once time for all cxgb3i hbas? If more than once the cxgbi_iscsi_init call to iscsi_register_transport would fail on the second call, because the iscsi class would not allow you to register the same transport twice. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Karen Xie on 11 Aug 2010 16:30
Yes, you are right. I will fix it to make sure iscsi transport registration happens only once. Thanks, Karen -----Original Message----- From: Mike Christie [mailto:michaelc(a)cs.wisc.edu] Sent: Wednesday, August 11, 2010 11:38 AM To: open-iscsi(a)googlegroups.com Cc: Karen Xie; linux-kernel(a)vger.kernel.org; linux-scsi(a)vger.kernel.org; Rakesh Ranjan; James.Bottomley(a)HansenPartnership.com Subject: Re: [PATCH 2/3] cxgb4i v5: iscsi driver On 08/09/2010 12:53 PM, kxie(a)chelsio.com wrote: > + > +static void *t4_uld_add(const struct cxgb4_lld_info *lldi) > +{ > + struct cxgbi_device *cdev; > + struct port_info *pi; > + int i, rc; > + > + cxgb4i_log_info("%s", version); > + > + cdev = cxgbi_device_register(sizeof(*lldi), lldi->nports); > + if (!cdev) { > + cxgb4i_log_info("t4 device 0x%p, register failed.\n", lldi); > + return NULL; > + } > + cxgb4i_log_debug(1<< CXGBI_DBG_DEV, > + "t4 0x%p,0x%x, ports %u,%s, chan %u, q %u,%u, wr %u.\n", > + cdev, lldi->adapter_type, lldi->nports, > + lldi->ports[0]->name, lldi->nchan, lldi->ntxq, > + lldi->nrxq, lldi->wr_cred); > + for (i = 0; i< lldi->nrxq; i++) > + cxgb4i_log_debug(1<< CXGBI_DBG_DEV, > + "t4 0x%p, rxq id #%d: %u.\n", > + cdev, i, lldi->rxq_ids[i]); > + > + memcpy(cxgbi_cdev_priv(cdev), lldi, sizeof(*lldi)); > + cdev->flags = CXGBI_FLAG_DEV_T4; > + cdev->pdev = lldi->pdev; > + cdev->ports = lldi->ports; > + cdev->nports = lldi->nports; > + cdev->mtus = lldi->mtus; > + cdev->nmtus = NMTUS; > + cdev->snd_win = cxgb4i_snd_win; > + cdev->rcv_win = cxgb4i_rcv_win; > + cdev->rx_credit_thres = cxgb4i_rx_credit_thres; > + cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN; > + cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr); > + cdev->itp =&cxgb4i_iscsi_transport; > + > + rc = cxgbi_iscsi_init(cdev); > + if (rc) { > + cxgb4i_log_info("t4 0x%p iscsi init failed\n", cdev); > + goto err_out; > + } For each LLD (cxgb3i and cxgb4i) could it get called more than once? I mean if you had multiple cxgb3i HBAs could it get called once for each or is it called just once time for all cxgb3i hbas? If more than once the cxgbi_iscsi_init call to iscsi_register_transport would fail on the second call, because the iscsi class would not allow you to register the same transport twice. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |