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[SCSI] be2iscsi: Ensure clean reuse of wrb

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This patch ensures that wrb is cleanly resued for io path
and is memset to zero for non io path

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Jayamohan Kallickal 2010-01-23 05:38:18 +05:30 committed by James Bottomley
parent f55a24f2c2
commit caf818f118
1 changed files with 17 additions and 6 deletions
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23
drivers/scsi/be2iscsi/be_main.c
View file

@ -1663,11 +1663,7 @@ hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
sg_len);
sge_len = sg_len;
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
0);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,
pwrb, sge_len);
sg_len = sg_dma_len(sg);
@ -1690,8 +1686,22 @@ hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
io_task->bhs_pa.u.a32.address_lo);
if (num_sg == 2)
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb, 1);
if (num_sg == 1) {
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
1);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
0);
} else if (num_sg == 2) {
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
0);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
0);
AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
0);
}
sg = l_sg;
psgl++;
psgl++;
@ -3476,6 +3486,7 @@ static int beiscsi_mtask(struct iscsi_task *task)
cid = beiscsi_conn->beiscsi_conn_cid;
pwrb = io_task->pwrb_handle->pwrb;
memset(pwrb, 0, sizeof(*pwrb));
AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
be32_to_cpu(task->cmdsn));
AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,