From ad1331a792f9f253bef362de9b6872c6b8f88c0c Mon Sep 17 00:00:00 2001 From: Bastian Blank Date: Sat, 7 Apr 2007 18:10:00 +0900 Subject: [SCSI] tgt: fix rdma transfer bugs - ibmstgt hits the max rdma transfer size (128k). - libsrp returns a rdma transfer error properly. Signed-off-by: Bastian Blank Signed-off-by: FUJITA Tomonori Signed-off-by: James Bottomley --- drivers/scsi/ibmvscsi/ibmvstgt.c | 18 +++++++++--------- drivers/scsi/libsrp.c | 12 ++++++------ 2 files changed, 15 insertions(+), 15 deletions(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/ibmvscsi/ibmvstgt.c b/drivers/scsi/ibmvscsi/ibmvstgt.c index a7fbd10817a0..84363c181620 100644 --- a/drivers/scsi/ibmvscsi/ibmvstgt.c +++ b/drivers/scsi/ibmvscsi/ibmvstgt.c @@ -35,7 +35,7 @@ #include "ibmvscsi.h" #define INITIAL_SRP_LIMIT 16 -#define DEFAULT_MAX_SECTORS 512 +#define DEFAULT_MAX_SECTORS 256 #define TGT_NAME "ibmvstgt" @@ -248,8 +248,8 @@ static int ibmvstgt_rdma(struct scsi_cmnd *sc, struct scatterlist *sg, int nsg, md[i].va + mdone); if (err != H_SUCCESS) { - eprintk("rdma error %d %d\n", dir, slen); - goto out; + eprintk("rdma error %d %d %ld\n", dir, slen, err); + return -EIO; } mlen -= slen; @@ -265,14 +265,13 @@ static int ibmvstgt_rdma(struct scsi_cmnd *sc, struct scatterlist *sg, int nsg, if (sidx > nsg) { eprintk("out of sg %p %d %d\n", iue, sidx, nsg); - goto out; + return -EIO; } } }; rest -= mlen; } -out: return 0; } @@ -282,18 +281,19 @@ static int ibmvstgt_cmd_done(struct scsi_cmnd *sc, unsigned long flags; struct iu_entry *iue = (struct iu_entry *) sc->SCp.ptr; struct srp_target *target = iue->target; + int err = 0; dprintk("%p %p %x %u\n", iue, target, vio_iu(iue)->srp.cmd.cdb[0], cmd->usg_sg); if (sc->use_sg) - srp_transfer_data(sc, &vio_iu(iue)->srp.cmd, ibmvstgt_rdma, 1, 1); + err = srp_transfer_data(sc, &vio_iu(iue)->srp.cmd, ibmvstgt_rdma, 1, 1); spin_lock_irqsave(&target->lock, flags); list_del(&iue->ilist); spin_unlock_irqrestore(&target->lock, flags); - if (sc->result != SAM_STAT_GOOD) { + if (err|| sc->result != SAM_STAT_GOOD) { eprintk("operation failed %p %d %x\n", iue, sc->result, vio_iu(iue)->srp.cmd.cdb[0]); send_rsp(iue, sc, HARDWARE_ERROR, 0x00); @@ -493,7 +493,8 @@ static void process_iu(struct viosrp_crq *crq, struct srp_target *target) { struct vio_port *vport = target_to_port(target); struct iu_entry *iue; - long err, done; + long err; + int done = 1; iue = srp_iu_get(target); if (!iue) { @@ -508,7 +509,6 @@ static void process_iu(struct viosrp_crq *crq, struct srp_target *target) if (err != H_SUCCESS) { eprintk("%ld transferring data error %p\n", err, iue); - done = 1; goto out; } diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c index 89403b00e042..37a0f4dd6186 100644 --- a/drivers/scsi/libsrp.c +++ b/drivers/scsi/libsrp.c @@ -225,8 +225,7 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd, struct srp_direct_buf *md = NULL; struct scatterlist dummy, *sg = NULL; dma_addr_t token = 0; - long err; - unsigned int done = 0; + int err = 0; int nmd, nsg = 0, len; if (dma_map || ext_desc) { @@ -258,8 +257,8 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd, sg_dma_address(&dummy) = token; err = rdma_io(sc, &dummy, 1, &id->table_desc, 1, DMA_TO_DEVICE, id->table_desc.len); - if (err < 0) { - eprintk("Error copying indirect table %ld\n", err); + if (err) { + eprintk("Error copying indirect table %d\n", err); goto free_mem; } } else { @@ -272,6 +271,7 @@ rdma: nsg = dma_map_sg(iue->target->dev, sg, sc->use_sg, DMA_BIDIRECTIONAL); if (!nsg) { eprintk("fail to map %p %d\n", iue, sc->use_sg); + err = -EIO; goto free_mem; } len = min(sc->request_bufflen, id->len); @@ -287,7 +287,7 @@ free_mem: if (token && dma_map) dma_free_coherent(iue->target->dev, id->table_desc.len, md, token); - return done; + return err; } static int data_out_desc_size(struct srp_cmd *cmd) @@ -352,7 +352,7 @@ int srp_transfer_data(struct scsi_cmnd *sc, struct srp_cmd *cmd, break; default: eprintk("Unknown format %d %x\n", dir, format); - break; + err = -EINVAL; } return err; -- cgit v1.2.1