From d78c317f6cd701bda9f6dbfbfbcba72f39dd6ad7 Mon Sep 17 00:00:00 2001 From: Neerav Parikh Date: Sun, 22 Jan 2012 17:30:05 -0800 Subject: [SCSI] libfc: Add support for FDMI This patch adds support for Fabric Device Management Interface as per FC-GS-4 spec. in libfc. Any driver making use of libfc can enable fdmi state machine for a given lport. If lport has enabled FDMI support the lport state machine will transition into FDMI after completing the DNS states and before entering the SCR state. The FDMI state transition is such that if there is an error, it won't stop the lport state machine from transitioning and the it will behave as if there was no FDMI support. The FDMI HBA attributes are registed with the Management server via Register HBA (RHBA) command and the port attributes are reigstered using the Register Port(RPA) command. Signed-off-by: Neerav Parikh Tested-by: Ross Brattain Acked-by: Robert Love Signed-off-by: James Bottomley --- drivers/scsi/libfc/fc_lport.c | 227 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 224 insertions(+), 3 deletions(-) (limited to 'drivers/scsi/libfc/fc_lport.c') diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index 83750ebb527f..9a0b2a9caad6 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -116,6 +116,8 @@ static void fc_lport_enter_ns(struct fc_lport *, enum fc_lport_state); static void fc_lport_enter_scr(struct fc_lport *); static void fc_lport_enter_ready(struct fc_lport *); static void fc_lport_enter_logo(struct fc_lport *); +static void fc_lport_enter_fdmi(struct fc_lport *lport); +static void fc_lport_enter_ms(struct fc_lport *, enum fc_lport_state); static const char *fc_lport_state_names[] = { [LPORT_ST_DISABLED] = "disabled", @@ -126,6 +128,11 @@ static const char *fc_lport_state_names[] = { [LPORT_ST_RSPN_ID] = "RSPN_ID", [LPORT_ST_RFT_ID] = "RFT_ID", [LPORT_ST_RFF_ID] = "RFF_ID", + [LPORT_ST_FDMI] = "FDMI", + [LPORT_ST_RHBA] = "RHBA", + [LPORT_ST_RPA] = "RPA", + [LPORT_ST_DHBA] = "DHBA", + [LPORT_ST_DPRT] = "DPRT", [LPORT_ST_SCR] = "SCR", [LPORT_ST_READY] = "Ready", [LPORT_ST_LOGO] = "LOGO", @@ -183,11 +190,14 @@ static void fc_lport_rport_callback(struct fc_lport *lport, if (lport->state == LPORT_ST_DNS) { lport->dns_rdata = rdata; fc_lport_enter_ns(lport, LPORT_ST_RNN_ID); + } else if (lport->state == LPORT_ST_FDMI) { + lport->ms_rdata = rdata; + fc_lport_enter_ms(lport, LPORT_ST_DHBA); } else { FC_LPORT_DBG(lport, "Received an READY event " "on port (%6.6x) for the directory " "server, but the lport is not " - "in the DNS state, it's in the " + "in the DNS or FDMI state, it's in the " "%d state", rdata->ids.port_id, lport->state); lport->tt.rport_logoff(rdata); @@ -196,7 +206,10 @@ static void fc_lport_rport_callback(struct fc_lport *lport, case RPORT_EV_LOGO: case RPORT_EV_FAILED: case RPORT_EV_STOP: - lport->dns_rdata = NULL; + if (rdata->ids.port_id == FC_FID_DIR_SERV) + lport->dns_rdata = NULL; + else if (rdata->ids.port_id == FC_FID_MGMT_SERV) + lport->ms_rdata = NULL; break; case RPORT_EV_NONE: break; @@ -1148,7 +1161,10 @@ static void fc_lport_ns_resp(struct fc_seq *sp, struct fc_frame *fp, fc_lport_enter_ns(lport, LPORT_ST_RFF_ID); break; case LPORT_ST_RFF_ID: - fc_lport_enter_scr(lport); + if (lport->fdmi_enabled) + fc_lport_enter_fdmi(lport); + else + fc_lport_enter_scr(lport); break; default: /* should have already been caught by state checks */ @@ -1162,6 +1178,85 @@ err: mutex_unlock(&lport->lp_mutex); } +/** + * fc_lport_ms_resp() - Handle response to a management server + * exchange + * @sp: current sequence in exchange + * @fp: response frame + * @lp_arg: Fibre Channel host port instance + * + * 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_ms_resp(struct fc_seq *sp, struct fc_frame *fp, + void *lp_arg) +{ + struct fc_lport *lport = lp_arg; + struct fc_frame_header *fh; + struct fc_ct_hdr *ct; + + FC_LPORT_DBG(lport, "Received a ms %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_RHBA || lport->state > LPORT_ST_DPRT) { + FC_LPORT_DBG(lport, "Received a management server 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; + } + + fh = fc_frame_header_get(fp); + ct = fc_frame_payload_get(fp, sizeof(*ct)); + + if (fh && ct && fh->fh_type == FC_TYPE_CT && + ct->ct_fs_type == FC_FST_MGMT && + ct->ct_fs_subtype == FC_FDMI_SUBTYPE) { + FC_LPORT_DBG(lport, "Received a management server response, " + "reason=%d explain=%d\n", + ct->ct_reason, + ct->ct_explan); + + switch (lport->state) { + case LPORT_ST_RHBA: + if (ntohs(ct->ct_cmd) == FC_FS_ACC) + fc_lport_enter_ms(lport, LPORT_ST_RPA); + else /* Error Skip RPA */ + fc_lport_enter_scr(lport); + break; + case LPORT_ST_RPA: + fc_lport_enter_scr(lport); + break; + case LPORT_ST_DPRT: + fc_lport_enter_ms(lport, LPORT_ST_RHBA); + break; + case LPORT_ST_DHBA: + fc_lport_enter_ms(lport, LPORT_ST_DPRT); + break; + default: + /* should have already been caught by state checks */ + break; + } + } else { + /* Invalid Frame? */ + fc_lport_error(lport, fp); + } +out: + fc_frame_free(fp); +err: + mutex_unlock(&lport->lp_mutex); +} + /** * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request * @sp: current sequence in SCR exchange @@ -1338,6 +1433,123 @@ err: fc_lport_error(lport, NULL); } +/** + * fc_lport_enter_ms() - management server commands + * @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_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; + /* Number of HBA Attributes */ + 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; + /* Number of Port Attributes */ + 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); +} + +/** + * fc_rport_enter_fdmi() - Create a fc_rport for the management server + * @lport: The local port requesting a remote port for the management server + * + * Locking Note: The lport lock is expected to be held before calling + * this routine. + */ +static void fc_lport_enter_fdmi(struct fc_lport *lport) +{ + struct fc_rport_priv *rdata; + + FC_LPORT_DBG(lport, "Entered FDMI state from %s state\n", + fc_lport_state(lport)); + + fc_lport_state_enter(lport, LPORT_ST_FDMI); + + mutex_lock(&lport->disc.disc_mutex); + rdata = lport->tt.rport_create(lport, FC_FID_MGMT_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); +} + /** * fc_lport_timeout() - Handler for the retry_work timer * @work: The work struct of the local port @@ -1371,6 +1583,15 @@ static void fc_lport_timeout(struct work_struct *work) case LPORT_ST_RFF_ID: fc_lport_enter_ns(lport, lport->state); break; + case LPORT_ST_FDMI: + fc_lport_enter_fdmi(lport); + break; + case LPORT_ST_RHBA: + case LPORT_ST_RPA: + case LPORT_ST_DHBA: + case LPORT_ST_DPRT: + fc_lport_enter_ms(lport, lport->state); + break; case LPORT_ST_SCR: fc_lport_enter_scr(lport); break; -- cgit v1.2.3 From 77dfce076cbd76c04e90abff188d058cdbff78dd Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Fri, 25 Nov 2011 23:14:23 +0800 Subject: scsi: remove the second argument of k[un]map_atomic() Signed-off-by: Cong Wang --- drivers/scsi/arcmsr/arcmsr_hba.c | 8 ++++---- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 5 ++--- drivers/scsi/cxgbi/libcxgbi.c | 5 ++--- drivers/scsi/fcoe/fcoe.c | 4 ++-- drivers/scsi/fcoe/fcoe_transport.c | 5 ++--- drivers/scsi/gdth.c | 4 ++-- drivers/scsi/ips.c | 6 +++--- drivers/scsi/isci/request.c | 16 ++++++++-------- drivers/scsi/libfc/fc_fcp.c | 8 ++++---- drivers/scsi/libfc/fc_libfc.c | 8 +++----- drivers/scsi/libfc/fc_libfc.h | 2 +- drivers/scsi/libfc/fc_lport.c | 2 +- drivers/scsi/libiscsi_tcp.c | 4 ++-- drivers/scsi/libsas/sas_host_smp.c | 8 ++++---- drivers/scsi/megaraid.c | 4 ++-- drivers/scsi/mvsas/mv_sas.c | 4 ++-- drivers/scsi/scsi_debug.c | 24 ++++++++++++------------ drivers/scsi/scsi_lib.c | 4 ++-- drivers/scsi/sd_dif.c | 12 ++++++------ 19 files changed, 64 insertions(+), 69 deletions(-) (limited to 'drivers/scsi/libfc/fc_lport.c') diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c index f980600f78a8..2fe9e90e53d9 100644 --- a/drivers/scsi/arcmsr/arcmsr_hba.c +++ b/drivers/scsi/arcmsr/arcmsr_hba.c @@ -1736,7 +1736,7 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, (uint32_t ) cmd->cmnd[8]; /* 4 bytes: Areca io control code */ sg = scsi_sglist(cmd); - buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; + buffer = kmap_atomic(sg_page(sg)) + sg->offset; if (scsi_sg_count(cmd) > 1) { retvalue = ARCMSR_MESSAGE_FAIL; goto message_out; @@ -1985,7 +1985,7 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, } message_out: sg = scsi_sglist(cmd); - kunmap_atomic(buffer - sg->offset, KM_IRQ0); + kunmap_atomic(buffer - sg->offset); return retvalue; } @@ -2035,11 +2035,11 @@ static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb, strncpy(&inqdata[32], "R001", 4); /* Product Revision */ sg = scsi_sglist(cmd); - buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; + buffer = kmap_atomic(sg_page(sg)) + sg->offset; memcpy(buffer, inqdata, sizeof(inqdata)); sg = scsi_sglist(cmd); - kunmap_atomic(buffer - sg->offset, KM_IRQ0); + kunmap_atomic(buffer - sg->offset); cmd->scsi_done(cmd); } diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c index 8c6156a10d90..a9af42e83632 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c +++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c @@ -322,8 +322,7 @@ static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) return -ENOMEM; } frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; - cp = kmap_atomic(skb_frag_page(frag), KM_SKB_DATA_SOFTIRQ) - + frag->page_offset; + cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; } else { cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); } @@ -332,7 +331,7 @@ static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) cp->fcoe_eof = eof; cp->fcoe_crc32 = cpu_to_le32(~crc); if (skb_is_nonlinear(skb)) { - kunmap_atomic(cp, KM_SKB_DATA_SOFTIRQ); + kunmap_atomic(cp); cp = NULL; } diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c index d3ff9cd40234..89afd6d21d89 100644 --- a/drivers/scsi/cxgbi/libcxgbi.c +++ b/drivers/scsi/cxgbi/libcxgbi.c @@ -1956,12 +1956,11 @@ int cxgbi_conn_init_pdu(struct iscsi_task *task, unsigned int offset, /* data fits in the skb's headroom */ for (i = 0; i < tdata->nr_frags; i++, frag++) { - char *src = kmap_atomic(frag->page, - KM_SOFTIRQ0); + char *src = kmap_atomic(frag->page); memcpy(dst, src+frag->offset, frag->size); dst += frag->size; - kunmap_atomic(src, KM_SOFTIRQ0); + kunmap_atomic(src); } if (padlen) { memset(dst, 0, padlen); diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index e9599600aa23..1094357d373e 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -1515,7 +1515,7 @@ static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) return -ENOMEM; } frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; - cp = kmap_atomic(skb_frag_page(frag), KM_SKB_DATA_SOFTIRQ) + cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; } else { cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); @@ -1526,7 +1526,7 @@ static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) cp->fcoe_crc32 = cpu_to_le32(~crc); if (skb_is_nonlinear(skb)) { - kunmap_atomic(cp, KM_SKB_DATA_SOFTIRQ); + kunmap_atomic(cp); cp = NULL; } diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c index bd97b2273f20..4d119a326d3b 100644 --- a/drivers/scsi/fcoe/fcoe_transport.c +++ b/drivers/scsi/fcoe/fcoe_transport.c @@ -210,10 +210,9 @@ u32 fcoe_fc_crc(struct fc_frame *fp) while (len > 0) { clen = min(len, PAGE_SIZE - (off & ~PAGE_MASK)); data = kmap_atomic( - skb_frag_page(frag) + (off >> PAGE_SHIFT), - KM_SKB_DATA_SOFTIRQ); + skb_frag_page(frag) + (off >> PAGE_SHIFT)); crc = crc32(crc, data + (off & ~PAGE_MASK), clen); - kunmap_atomic(data, KM_SKB_DATA_SOFTIRQ); + kunmap_atomic(data); off += clen; len -= clen; } diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c index 3242bcabad97..d42ec921de46 100644 --- a/drivers/scsi/gdth.c +++ b/drivers/scsi/gdth.c @@ -2310,10 +2310,10 @@ static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp, return; } local_irq_save(flags); - address = kmap_atomic(sg_page(sl), KM_BIO_SRC_IRQ) + sl->offset; + address = kmap_atomic(sg_page(sl)) + sl->offset; memcpy(address, buffer, cpnow); flush_dcache_page(sg_page(sl)); - kunmap_atomic(address, KM_BIO_SRC_IRQ); + kunmap_atomic(address); local_irq_restore(flags); if (cpsum == cpcount) break; diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c index d77891e5683b..b6d7a5c2fc94 100644 --- a/drivers/scsi/ips.c +++ b/drivers/scsi/ips.c @@ -1511,14 +1511,14 @@ static int ips_is_passthru(struct scsi_cmnd *SC) /* kmap_atomic() ensures addressability of the user buffer.*/ /* local_irq_save() protects the KM_IRQ0 address slot. */ local_irq_save(flags); - buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; + buffer = kmap_atomic(sg_page(sg)) + sg->offset; if (buffer && buffer[0] == 'C' && buffer[1] == 'O' && buffer[2] == 'P' && buffer[3] == 'P') { - kunmap_atomic(buffer - sg->offset, KM_IRQ0); + kunmap_atomic(buffer - sg->offset); local_irq_restore(flags); return 1; } - kunmap_atomic(buffer - sg->offset, KM_IRQ0); + kunmap_atomic(buffer - sg->offset); local_irq_restore(flags); } return 0; diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 192cb48d849a..ee0dc05c6269 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -1304,9 +1304,9 @@ sci_stp_request_pio_data_in_copy_data_buffer(struct isci_stp_request *stp_req, struct page *page = sg_page(sg); copy_len = min_t(int, total_len, sg_dma_len(sg)); - kaddr = kmap_atomic(page, KM_IRQ0); + kaddr = kmap_atomic(page); memcpy(kaddr + sg->offset, src_addr, copy_len); - kunmap_atomic(kaddr, KM_IRQ0); + kunmap_atomic(kaddr); total_len -= copy_len; src_addr += copy_len; sg = sg_next(sg); @@ -1654,7 +1654,7 @@ sci_io_request_frame_handler(struct isci_request *ireq, sci_unsolicited_frame_control_get_header(&ihost->uf_control, frame_index, &frame_header); - kaddr = kmap_atomic(sg_page(sg), KM_IRQ0); + kaddr = kmap_atomic(sg_page(sg)); rsp = kaddr + sg->offset; sci_swab32_cpy(rsp, frame_header, 1); @@ -1691,7 +1691,7 @@ sci_io_request_frame_handler(struct isci_request *ireq, ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR; sci_change_state(&ireq->sm, SCI_REQ_COMPLETED); } - kunmap_atomic(kaddr, KM_IRQ0); + kunmap_atomic(kaddr); sci_controller_release_frame(ihost, frame_index); @@ -3023,10 +3023,10 @@ static void isci_request_io_request_complete(struct isci_host *ihost, dma_unmap_sg(&ihost->pdev->dev, sg, 1, DMA_TO_DEVICE); /* need to swab it back in case the command buffer is re-used */ - kaddr = kmap_atomic(sg_page(sg), KM_IRQ0); + kaddr = kmap_atomic(sg_page(sg)); smp_req = kaddr + sg->offset; sci_swab32_cpy(smp_req, smp_req, sg->length / sizeof(u32)); - kunmap_atomic(kaddr, KM_IRQ0); + kunmap_atomic(kaddr); break; } default: @@ -3311,7 +3311,7 @@ sci_io_request_construct_smp(struct device *dev, u8 req_len; u32 cmd; - kaddr = kmap_atomic(sg_page(sg), KM_IRQ0); + kaddr = kmap_atomic(sg_page(sg)); smp_req = kaddr + sg->offset; /* * Look at the SMP requests' header fields; for certain SAS 1.x SMP @@ -3337,7 +3337,7 @@ sci_io_request_construct_smp(struct device *dev, req_len = smp_req->req_len; sci_swab32_cpy(smp_req, smp_req, sg->length / sizeof(u32)); cmd = *(u32 *) smp_req; - kunmap_atomic(kaddr, KM_IRQ0); + kunmap_atomic(kaddr); if (!dma_map_sg(dev, sg, 1, DMA_TO_DEVICE)) return SCI_FAILURE; diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c index f607314810ac..b577c907b318 100644 --- a/drivers/scsi/libfc/fc_fcp.c +++ b/drivers/scsi/libfc/fc_fcp.c @@ -485,11 +485,11 @@ static void fc_fcp_recv_data(struct fc_fcp_pkt *fsp, struct fc_frame *fp) if (!(fr_flags(fp) & FCPHF_CRC_UNCHECKED)) { copy_len = fc_copy_buffer_to_sglist(buf, len, sg, &nents, - &offset, KM_SOFTIRQ0, NULL); + &offset, NULL); } else { crc = crc32(~0, (u8 *) fh, sizeof(*fh)); copy_len = fc_copy_buffer_to_sglist(buf, len, sg, &nents, - &offset, KM_SOFTIRQ0, &crc); + &offset, &crc); buf = fc_frame_payload_get(fp, 0); if (len % 4) crc = crc32(crc, buf + len, 4 - (len % 4)); @@ -650,10 +650,10 @@ static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq, * The scatterlist item may be bigger than PAGE_SIZE, * but we must not cross pages inside the kmap. */ - page_addr = kmap_atomic(page, KM_SOFTIRQ0); + page_addr = kmap_atomic(page); memcpy(data, (char *)page_addr + (off & ~PAGE_MASK), sg_bytes); - kunmap_atomic(page_addr, KM_SOFTIRQ0); + kunmap_atomic(page_addr); data += sg_bytes; } offset += sg_bytes; diff --git a/drivers/scsi/libfc/fc_libfc.c b/drivers/scsi/libfc/fc_libfc.c index 1bf9841ef154..8d65a51a7598 100644 --- a/drivers/scsi/libfc/fc_libfc.c +++ b/drivers/scsi/libfc/fc_libfc.c @@ -105,14 +105,13 @@ module_exit(libfc_exit); * @sg: pointer to the pointer of the SG list. * @nents: pointer to the remaining number of entries in the SG list. * @offset: pointer to the current offset in the SG list. - * @km_type: dedicated page table slot type for kmap_atomic. * @crc: pointer to the 32-bit crc value. * If crc is NULL, CRC is not calculated. */ u32 fc_copy_buffer_to_sglist(void *buf, size_t len, struct scatterlist *sg, u32 *nents, size_t *offset, - enum km_type km_type, u32 *crc) + u32 *crc) { size_t remaining = len; u32 copy_len = 0; @@ -142,12 +141,11 @@ u32 fc_copy_buffer_to_sglist(void *buf, size_t len, off = *offset + sg->offset; sg_bytes = min(sg_bytes, (size_t)(PAGE_SIZE - (off & ~PAGE_MASK))); - page_addr = kmap_atomic(sg_page(sg) + (off >> PAGE_SHIFT), - km_type); + page_addr = kmap_atomic(sg_page(sg) + (off >> PAGE_SHIFT)); if (crc) *crc = crc32(*crc, buf, sg_bytes); memcpy((char *)page_addr + (off & ~PAGE_MASK), buf, sg_bytes); - kunmap_atomic(page_addr, km_type); + kunmap_atomic(page_addr); buf += sg_bytes; *offset += sg_bytes; remaining -= sg_bytes; diff --git a/drivers/scsi/libfc/fc_libfc.h b/drivers/scsi/libfc/fc_libfc.h index c7d071289af5..c2830cc66d6a 100644 --- a/drivers/scsi/libfc/fc_libfc.h +++ b/drivers/scsi/libfc/fc_libfc.h @@ -134,6 +134,6 @@ extern void fc_fc4_conf_lport_params(struct fc_lport *, enum fc_fh_type); u32 fc_copy_buffer_to_sglist(void *buf, size_t len, struct scatterlist *sg, u32 *nents, size_t *offset, - enum km_type km_type, u32 *crc); + u32 *crc); #endif /* _FC_LIBFC_H_ */ diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index 83750ebb527f..c1a808cc5920 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -1698,7 +1698,7 @@ static void fc_lport_bsg_resp(struct fc_seq *sp, struct fc_frame *fp, job->reply->reply_payload_rcv_len += fc_copy_buffer_to_sglist(buf, len, info->sg, &info->nents, - &info->offset, KM_BIO_SRC_IRQ, NULL); + &info->offset, NULL); if (fr_eof(fp) == FC_EOF_T && (ntoh24(fh->fh_f_ctl) & (FC_FC_LAST_SEQ | FC_FC_END_SEQ)) == diff --git a/drivers/scsi/libiscsi_tcp.c b/drivers/scsi/libiscsi_tcp.c index 5715a3d0a3d3..7f0465b9623e 100644 --- a/drivers/scsi/libiscsi_tcp.c +++ b/drivers/scsi/libiscsi_tcp.c @@ -135,7 +135,7 @@ static void iscsi_tcp_segment_map(struct iscsi_segment *segment, int recv) if (recv) { segment->atomic_mapped = true; - segment->sg_mapped = kmap_atomic(sg_page(sg), KM_SOFTIRQ0); + segment->sg_mapped = kmap_atomic(sg_page(sg)); } else { segment->atomic_mapped = false; /* the xmit path can sleep with the page mapped so use kmap */ @@ -149,7 +149,7 @@ void iscsi_tcp_segment_unmap(struct iscsi_segment *segment) { if (segment->sg_mapped) { if (segment->atomic_mapped) - kunmap_atomic(segment->sg_mapped, KM_SOFTIRQ0); + kunmap_atomic(segment->sg_mapped); else kunmap(sg_page(segment->sg)); segment->sg_mapped = NULL; diff --git a/drivers/scsi/libsas/sas_host_smp.c b/drivers/scsi/libsas/sas_host_smp.c index bb8f49269a68..3814d3eed401 100644 --- a/drivers/scsi/libsas/sas_host_smp.c +++ b/drivers/scsi/libsas/sas_host_smp.c @@ -246,9 +246,9 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, } local_irq_disable(); - buf = kmap_atomic(bio_page(req->bio), KM_USER0) + bio_offset(req->bio); + buf = kmap_atomic(bio_page(req->bio)); memcpy(req_data, buf, blk_rq_bytes(req)); - kunmap_atomic(buf - bio_offset(req->bio), KM_USER0); + kunmap_atomic(buf - bio_offset(req->bio)); local_irq_enable(); if (req_data[0] != SMP_REQUEST) @@ -361,10 +361,10 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, } local_irq_disable(); - buf = kmap_atomic(bio_page(rsp->bio), KM_USER0) + bio_offset(rsp->bio); + buf = kmap_atomic(bio_page(rsp->bio)); memcpy(buf, resp_data, blk_rq_bytes(rsp)); flush_kernel_dcache_page(bio_page(rsp->bio)); - kunmap_atomic(buf - bio_offset(rsp->bio), KM_USER0); + kunmap_atomic(buf - bio_offset(rsp->bio)); local_irq_enable(); out: diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index 15eefa1d61fd..4d39a9ffc081 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -670,10 +670,10 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) struct scatterlist *sg; sg = scsi_sglist(cmd); - buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; + buf = kmap_atomic(sg_page(sg)) + sg->offset; memset(buf, 0, cmd->cmnd[4]); - kunmap_atomic(buf - sg->offset, KM_IRQ0); + kunmap_atomic(buf - sg->offset); cmd->result = (DID_OK << 16); cmd->scsi_done(cmd); diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index a4884a57cf79..01ab9c4d3464 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -1885,11 +1885,11 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) case SAS_PROTOCOL_SMP: { struct scatterlist *sg_resp = &task->smp_task.smp_resp; tstat->stat = SAM_STAT_GOOD; - to = kmap_atomic(sg_page(sg_resp), KM_IRQ0); + to = kmap_atomic(sg_page(sg_resp)); memcpy(to + sg_resp->offset, slot->response + sizeof(struct mvs_err_info), sg_dma_len(sg_resp)); - kunmap_atomic(to, KM_IRQ0); + kunmap_atomic(to); break; } diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 6888b2ca5bfc..68da6c092f65 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1778,7 +1778,7 @@ static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) { int len = min(psgl->length, resid); - paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset; + paddr = kmap_atomic(sg_page(psgl)) + psgl->offset; memcpy(paddr, dif_storep + dif_offset(sector), len); sector += len >> 3; @@ -1788,7 +1788,7 @@ static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, sector = do_div(tmp_sec, sdebug_store_sectors); } resid -= len; - kunmap_atomic(paddr, KM_IRQ0); + kunmap_atomic(paddr); } dix_reads++; @@ -1881,12 +1881,12 @@ static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, BUG_ON(scsi_sg_count(SCpnt) == 0); BUG_ON(scsi_prot_sg_count(SCpnt) == 0); - paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset; + paddr = kmap_atomic(sg_page(psgl)) + psgl->offset; ppage_offset = 0; /* For each data page */ scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) { - daddr = kmap_atomic(sg_page(dsgl), KM_IRQ0) + dsgl->offset; + daddr = kmap_atomic(sg_page(dsgl)) + dsgl->offset; /* For each sector-sized chunk in data page */ for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) { @@ -1895,10 +1895,10 @@ static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, * protection page advance to the next one */ if (ppage_offset >= psgl->length) { - kunmap_atomic(paddr, KM_IRQ1); + kunmap_atomic(paddr); psgl = sg_next(psgl); BUG_ON(psgl == NULL); - paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + paddr = kmap_atomic(sg_page(psgl)) + psgl->offset; ppage_offset = 0; } @@ -1971,10 +1971,10 @@ static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, ppage_offset += sizeof(struct sd_dif_tuple); } - kunmap_atomic(daddr, KM_IRQ0); + kunmap_atomic(daddr); } - kunmap_atomic(paddr, KM_IRQ1); + kunmap_atomic(paddr); dix_writes++; @@ -1982,8 +1982,8 @@ static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, out: dif_errors++; - kunmap_atomic(daddr, KM_IRQ0); - kunmap_atomic(paddr, KM_IRQ1); + kunmap_atomic(daddr); + kunmap_atomic(paddr); return ret; } @@ -2303,7 +2303,7 @@ static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, offset = 0; for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { - kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); + kaddr = (unsigned char *)kmap_atomic(sg_page(sg)); if (!kaddr) goto out; @@ -2311,7 +2311,7 @@ static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, *(kaddr + sg->offset + j) ^= *(buf + offset + j); offset += sg->length; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } ret = 0; out: diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index b2c95dbe9d65..a33b2b66da67 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -2567,7 +2567,7 @@ void *scsi_kmap_atomic_sg(struct scatterlist *sgl, int sg_count, if (*len > sg_len) *len = sg_len; - return kmap_atomic(page, KM_BIO_SRC_IRQ); + return kmap_atomic(page); } EXPORT_SYMBOL(scsi_kmap_atomic_sg); @@ -2577,6 +2577,6 @@ EXPORT_SYMBOL(scsi_kmap_atomic_sg); */ void scsi_kunmap_atomic_sg(void *virt) { - kunmap_atomic(virt, KM_BIO_SRC_IRQ); + kunmap_atomic(virt); } EXPORT_SYMBOL(scsi_kunmap_atomic_sg); diff --git a/drivers/scsi/sd_dif.c b/drivers/scsi/sd_dif.c index f8fb2d691c0a..e52d5bc42bc4 100644 --- a/drivers/scsi/sd_dif.c +++ b/drivers/scsi/sd_dif.c @@ -392,7 +392,7 @@ int sd_dif_prepare(struct request *rq, sector_t hw_sector, unsigned int sector_s virt = bio->bi_integrity->bip_sector & 0xffffffff; bip_for_each_vec(iv, bio->bi_integrity, i) { - sdt = kmap_atomic(iv->bv_page, KM_USER0) + sdt = kmap_atomic(iv->bv_page) + iv->bv_offset; for (j = 0 ; j < iv->bv_len ; j += tuple_sz, sdt++) { @@ -405,7 +405,7 @@ int sd_dif_prepare(struct request *rq, sector_t hw_sector, unsigned int sector_s phys++; } - kunmap_atomic(sdt, KM_USER0); + kunmap_atomic(sdt); } bio->bi_flags |= (1 << BIO_MAPPED_INTEGRITY); @@ -414,7 +414,7 @@ int sd_dif_prepare(struct request *rq, sector_t hw_sector, unsigned int sector_s return 0; error: - kunmap_atomic(sdt, KM_USER0); + kunmap_atomic(sdt); sd_printk(KERN_ERR, sdkp, "%s: virt %u, phys %u, ref %u, app %4x\n", __func__, virt, phys, be32_to_cpu(sdt->ref_tag), be16_to_cpu(sdt->app_tag)); @@ -453,13 +453,13 @@ void sd_dif_complete(struct scsi_cmnd *scmd, unsigned int good_bytes) virt = bio->bi_integrity->bip_sector & 0xffffffff; bip_for_each_vec(iv, bio->bi_integrity, i) { - sdt = kmap_atomic(iv->bv_page, KM_USER0) + sdt = kmap_atomic(iv->bv_page) + iv->bv_offset; for (j = 0 ; j < iv->bv_len ; j += tuple_sz, sdt++) { if (sectors == 0) { - kunmap_atomic(sdt, KM_USER0); + kunmap_atomic(sdt); return; } @@ -474,7 +474,7 @@ void sd_dif_complete(struct scsi_cmnd *scmd, unsigned int good_bytes) sectors--; } - kunmap_atomic(sdt, KM_USER0); + kunmap_atomic(sdt); } } } -- cgit v1.2.3 From 73d67aa40b1f94a4e5edecbbc3b94d352eeeae0a Mon Sep 17 00:00:00 2001 From: Vasu Dev Date: Fri, 9 Mar 2012 14:49:58 -0800 Subject: [SCSI] libfc: update fc_host mfs along with updating lport->mfs Currently fc_host mfs is not getting updated in case its changed during FLOGI and that leaves fc_host to show its initial old value in sysfs, so instead have fc_host mfs updated along with updating lport mfs during FLOGI. Also in case of bad mfs during flogi, error out instead of continuing with flogi. [ Changes made by Robert Love: condition to '>=' and added printing of lport->mfs in DBG statement. FLOGI resp processing failed without being able to compare FCoE MFS 2112 against an incoming MFS of 2112 ] Signed-off-by: Vasu Dev Tested-by: Ross Brattain Signed-off-by: Robert Love Signed-off-by: James Bottomley --- drivers/scsi/libfc/fc_lport.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/libfc/fc_lport.c') diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index 9a0b2a9caad6..4f7ef76aa795 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -1743,8 +1743,16 @@ void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, mfs = ntohs(flp->fl_csp.sp_bb_data) & FC_SP_BB_DATA_MASK; if (mfs >= FC_SP_MIN_MAX_PAYLOAD && - mfs < lport->mfs) + mfs <= lport->mfs) { lport->mfs = mfs; + fc_host_maxframe_size(lport->host) = mfs; + } else { + FC_LPORT_DBG(lport, "FLOGI bad mfs:%hu response, " + "lport->mfs:%hu\n", mfs, lport->mfs); + fc_lport_error(lport, fp); + goto err; + } + csp_flags = ntohs(flp->fl_csp.sp_features); r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); -- cgit v1.2.3