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IB/iser: Centralize ib_sig_domain settings 

Later there will be more parameters to set, so we want to do it in a
centralized place.

This patch does not change any functionality.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Sagi Grimberg 2014-08-13 19:54:33 +03:00 committed by Roland Dreier
parent 142537f4e5
commit 92792c0a19
1 changed files with 18 additions and 18 deletions
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36
drivers/infiniband/ulp/iser/iser_memory.c
View File

@ -457,44 +457,44 @@ scsi2ib_prot_type(unsigned char prot_type)
}
}
static inline void
iser_set_dif_domain(struct scsi_cmnd *sc, struct ib_sig_attrs *sig_attrs,
struct ib_sig_domain *domain)
{
unsigned char scsi_ptype = scsi_get_prot_type(sc);
domain->sig.dif.type = scsi2ib_prot_type(scsi_ptype);
domain->sig.dif.pi_interval = sc->device->sector_size;
domain->sig.dif.ref_tag = scsi_get_lba(sc) & 0xffffffff;
};
static int
iser_set_sig_attrs(struct scsi_cmnd *sc, struct ib_sig_attrs *sig_attrs)
{
unsigned char scsi_ptype = scsi_get_prot_type(sc);
sig_attrs->mem.sig_type = IB_SIG_TYPE_T10_DIF;
sig_attrs->wire.sig_type = IB_SIG_TYPE_T10_DIF;
sig_attrs->mem.sig.dif.pi_interval = sc->device->sector_size;
sig_attrs->wire.sig.dif.pi_interval = sc->device->sector_size;
switch (scsi_get_prot_op(sc)) {
case SCSI_PROT_WRITE_INSERT:
case SCSI_PROT_READ_STRIP:
sig_attrs->mem.sig.dif.type = IB_T10DIF_NONE;
sig_attrs->wire.sig.dif.type = scsi2ib_prot_type(scsi_ptype);
iser_set_dif_domain(sc, sig_attrs, &sig_attrs->wire);
sig_attrs->wire.sig.dif.bg_type = IB_T10DIF_CRC;
sig_attrs->wire.sig.dif.ref_tag = scsi_get_lba(sc) &
0xffffffff;
break;
case SCSI_PROT_READ_INSERT:
case SCSI_PROT_WRITE_STRIP:
sig_attrs->mem.sig.dif.type = scsi2ib_prot_type(scsi_ptype);
sig_attrs->mem.sig.dif.bg_type = IB_T10DIF_CRC;
sig_attrs->mem.sig.dif.ref_tag = scsi_get_lba(sc) &
0xffffffff;
sig_attrs->wire.sig.dif.type = IB_T10DIF_NONE;
iser_set_dif_domain(sc, sig_attrs, &sig_attrs->mem);
sig_attrs->mem.sig.dif.bg_type = iser_pi_guard ? IB_T10DIF_CSUM :
IB_T10DIF_CRC;
break;
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
sig_attrs->mem.sig.dif.type = scsi2ib_prot_type(scsi_ptype);
sig_attrs->mem.sig.dif.bg_type = IB_T10DIF_CRC;
sig_attrs->mem.sig.dif.ref_tag = scsi_get_lba(sc) &
0xffffffff;
sig_attrs->wire.sig.dif.type = scsi2ib_prot_type(scsi_ptype);
iser_set_dif_domain(sc, sig_attrs, &sig_attrs->wire);
sig_attrs->wire.sig.dif.bg_type = IB_T10DIF_CRC;
sig_attrs->wire.sig.dif.ref_tag = scsi_get_lba(sc) &
0xffffffff;
iser_set_dif_domain(sc, sig_attrs, &sig_attrs->mem);
sig_attrs->mem.sig.dif.bg_type = iser_pi_guard ? IB_T10DIF_CSUM :
IB_T10DIF_CRC;
break;
default:
iser_err("Unsupported PI operation %d\n",