Date: Fri, 8 Aug 2014 14:42:04 +0000 (UTC) From: Joerg Wunsch <joerg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r269717 - stable/10/sys/cam/scsi Message-ID: <53e4e1bc.2fba.18c72b23@svn.freebsd.org>
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Author: joerg Date: Fri Aug 8 14:42:03 2014 New Revision: 269717 URL: http://svnweb.freebsd.org/changeset/base/269717 Log: Merge r269353: Fix breakage introduced by r256843: removing the SA_CCB_WAITING bit left some of the decisions based on its counterpart, SA_CCB_BUFFER_IO being random. As a result, propagation of the residual information for the SPACE command was broken, so the number of filemarks encountered during a SPACE operation was miscalculated. Consequently, systems relying on properly tracked filemark counters (like Bacula) fell apart. The change also removes a switch/case in sadone() which r256843 degraded to a single remaining case label. PR: 192285 Modified: stable/10/sys/cam/scsi/scsi_sa.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cam/scsi/scsi_sa.c ============================================================================== --- stable/10/sys/cam/scsi/scsi_sa.c Fri Aug 8 14:23:20 2014 (r269716) +++ stable/10/sys/cam/scsi/scsi_sa.c Fri Aug 8 14:42:03 2014 (r269717) @@ -113,16 +113,8 @@ typedef enum { #define ccb_pflags ppriv_field0 #define ccb_bp ppriv_ptr1 -#define SA_CCB_BUFFER_IO 0x0 -#define SA_CCB_TYPEMASK 0x1 -#define SA_POSITION_UPDATED 0x2 - -#define Set_CCB_Type(x, type) \ - x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ - x->ccb_h.ccb_pflags |= type - -#define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) - +/* bits in ccb_pflags */ +#define SA_POSITION_UPDATED 0x1 typedef enum { @@ -1834,7 +1826,6 @@ again: bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, IO_TIMEOUT); start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; - Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); start_ccb->ccb_h.ccb_bp = bp; bp = bioq_first(&softc->bio_queue); xpt_action(start_ccb); @@ -1859,92 +1850,86 @@ sadone(struct cam_periph *periph, union { struct sa_softc *softc; struct ccb_scsiio *csio; + struct bio *bp; + int error; softc = (struct sa_softc *)periph->softc; csio = &done_ccb->csio; - switch (CCB_Type(csio)) { - case SA_CCB_BUFFER_IO: - { - struct bio *bp; - int error; - softc->dsreg = MTIO_DSREG_REST; - bp = (struct bio *)done_ccb->ccb_h.ccb_bp; - error = 0; - if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { - if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { - /* - * A retry was scheduled, so just return. - */ - return; - } + softc->dsreg = MTIO_DSREG_REST; + bp = (struct bio *)done_ccb->ccb_h.ccb_bp; + error = 0; + if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { + if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { + /* + * A retry was scheduled, so just return. + */ + return; } + } - if (error == EIO) { + if (error == EIO) { - /* - * Catastrophic error. Mark the tape as frozen - * (we no longer know tape position). - * - * Return all queued I/O with EIO, and unfreeze - * our queue so that future transactions that - * attempt to fix this problem can get to the - * device. - * - */ + /* + * Catastrophic error. Mark the tape as frozen + * (we no longer know tape position). + * + * Return all queued I/O with EIO, and unfreeze + * our queue so that future transactions that + * attempt to fix this problem can get to the + * device. + * + */ - softc->flags |= SA_FLAG_TAPE_FROZEN; - bioq_flush(&softc->bio_queue, NULL, EIO); - } - if (error != 0) { - bp->bio_resid = bp->bio_bcount; - bp->bio_error = error; + softc->flags |= SA_FLAG_TAPE_FROZEN; + bioq_flush(&softc->bio_queue, NULL, EIO); + } + if (error != 0) { + bp->bio_resid = bp->bio_bcount; + bp->bio_error = error; + bp->bio_flags |= BIO_ERROR; + /* + * In the error case, position is updated in saerror. + */ + } else { + bp->bio_resid = csio->resid; + bp->bio_error = 0; + if (csio->resid != 0) { bp->bio_flags |= BIO_ERROR; - /* - * In the error case, position is updated in saerror. - */ - } else { - bp->bio_resid = csio->resid; - bp->bio_error = 0; - if (csio->resid != 0) { - bp->bio_flags |= BIO_ERROR; - } - if (bp->bio_cmd == BIO_WRITE) { - softc->flags |= SA_FLAG_TAPE_WRITTEN; - softc->filemarks = 0; - } - if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && - (softc->blkno != (daddr_t) -1)) { - if ((softc->flags & SA_FLAG_FIXED) != 0) { - u_int32_t l; - if (softc->blk_shift != 0) { - l = bp->bio_bcount >> - softc->blk_shift; - } else { - l = bp->bio_bcount / - softc->media_blksize; - } - softc->blkno += (daddr_t) l; + } + if (bp->bio_cmd == BIO_WRITE) { + softc->flags |= SA_FLAG_TAPE_WRITTEN; + softc->filemarks = 0; + } + if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && + (softc->blkno != (daddr_t) -1)) { + if ((softc->flags & SA_FLAG_FIXED) != 0) { + u_int32_t l; + if (softc->blk_shift != 0) { + l = bp->bio_bcount >> + softc->blk_shift; } else { - softc->blkno++; + l = bp->bio_bcount / + softc->media_blksize; } + softc->blkno += (daddr_t) l; + } else { + softc->blkno++; } } - /* - * If we had an error (immediate or pending), - * release the device queue now. - */ - if (error || (softc->flags & SA_FLAG_ERR_PENDING)) - cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); - if (error || bp->bio_resid) { - CAM_DEBUG(periph->path, CAM_DEBUG_INFO, - ("error %d resid %ld count %ld\n", error, - bp->bio_resid, bp->bio_bcount)); - } - biofinish(bp, softc->device_stats, 0); - break; } + /* + * If we had an error (immediate or pending), + * release the device queue now. + */ + if (error || (softc->flags & SA_FLAG_ERR_PENDING)) + cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); + if (error || bp->bio_resid) { + CAM_DEBUG(periph->path, CAM_DEBUG_INFO, + ("error %d resid %ld count %ld\n", error, + bp->bio_resid, bp->bio_bcount)); } + biofinish(bp, softc->device_stats, 0); xpt_release_ccb(done_ccb); } @@ -2497,7 +2482,8 @@ saerror(union ccb *ccb, u_int32_t cflgs, info /= softc->media_blksize; } } - if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { + if (csio->cdb_io.cdb_bytes[0] == SA_READ || + csio->cdb_io.cdb_bytes[0] == SA_WRITE) { bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, sizeof (struct scsi_sense_data)); bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
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