diff options
Diffstat (limited to 'usr.sbin/iscsid/vscsi.c')
| -rw-r--r-- | usr.sbin/iscsid/vscsi.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/usr.sbin/iscsid/vscsi.c b/usr.sbin/iscsid/vscsi.c index 4f796eb3845..5606358fd9d 100644 --- a/usr.sbin/iscsid/vscsi.c +++ b/usr.sbin/iscsid/vscsi.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vscsi.c,v 1.11 2014/04/21 09:48:31 claudio Exp $ */ +/* $OpenBSD: vscsi.c,v 1.12 2014/04/21 12:24:58 claudio Exp $ */ /* * Copyright (c) 2009 Claudio Jeker <claudio@openbsd.org> @@ -49,9 +49,10 @@ struct scsi_task { size_t datalen; }; -void vscsi_callback(struct connection *, void *, struct pdu *); -void vscsi_fail(void *arg); -void vscsi_dataout(struct connection *, struct scsi_task *, u_int32_t, size_t); +void vscsi_callback(struct connection *, void *, struct pdu *); +void vscsi_fail(void *arg); +void vscsi_dataout(struct connection *, struct scsi_task *, u_int32_t, + size_t, size_t); void vscsi_open(char *dev) @@ -118,14 +119,20 @@ vscsi_dispatch(int fd, short event, void *arg) memcpy(sreq->cdb, &i2t.cmd, i2t.cmdlen); /* include immediate data of up to FirstBurstLength bytes if allowed */ - if (i2t.direction == VSCSI_DIR_WRITE && - s->active.ImmediateData) { + if (i2t.direction == VSCSI_DIR_WRITE && s->active.ImmediateData) { + struct connection *c; char *buf; u_int32_t t32; size_t size; size = i2t.datalen > s->active.FirstBurstLength ? s->active.FirstBurstLength : i2t.datalen; + + /* XXX assumes all connections have same settings */ + c = TAILQ_FIRST(&s->connections); + if (c && size > c->active.MaxRecvDataSegmentLength) + size = c->active.MaxRecvDataSegmentLength; + if (!(buf = pdu_alloc(size))) fatal("vscsi_dispatch"); t32 = htonl(size); @@ -207,7 +214,7 @@ vscsi_callback(struct connection *c, void *arg, struct pdu *p) struct iscsi_pdu_rt2 *r2t; int status = VSCSI_STAT_DONE; u_char *buf = NULL; - size_t size = 0, n; + size_t size, off, n; int tag; sresp = pdu_getbuf(p, NULL, PDU_HEADER); @@ -223,6 +230,7 @@ vscsi_callback(struct connection *c, void *arg, struct pdu *p) conn_fail(c); break; } + size = 0; /* XXX handle the various serial numbers */ if (sresp->response) { status = VSCSI_STAT_ERR; @@ -263,11 +271,10 @@ send_status: case ISCSI_OP_R2T: conn_task_cleanup(c, &t->task); r2t = (struct iscsi_pdu_rt2 *)sresp; - if (ntohl(r2t->buffer_offs)) - fatalx("vscsi: r2t bummer failure"); + off = ntohl(r2t->buffer_offs); size = ntohl(r2t->desired_datalen); - vscsi_dataout(c, t, r2t->ttt, size); + vscsi_dataout(c, t, r2t->ttt, size, off); break; default: log_debug("scsi task: tag %d, target %d lun %d", t->tag, @@ -291,7 +298,7 @@ vscsi_fail(void *arg) void vscsi_dataout(struct connection *c, struct scsi_task *t, u_int32_t ttt, - size_t len) + size_t len, size_t buffer_off) { struct pdu *p; struct iscsi_pdu_data_out *dout; @@ -318,7 +325,7 @@ vscsi_dataout(struct connection *c, struct scsi_task *t, u_int32_t ttt, t32 = htonl(size); memcpy(&dout->ahslen, &t32, sizeof(t32)); - dout->buffer_offs = htonl(off); + dout->buffer_offs = htonl(buffer_off + off); if (!(buf = pdu_alloc(size))) fatal("vscsi_r2t"); |