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| author |   Max Gurtovoy <maxg@mellanox.com> | 2019-09-25 00:03:47 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2019-10-01 11:24:24 -0300 |
| commit | 7718cf03c3ce4b6ebd90107643ccd01c952a1fce (patch) | |
| tree | 15c4663517260a20d3055b77b1e2c4a5a0327f23 /drivers/infiniband/ulp | |
| parent | IB/iser: add unlikely checks in the fast path (diff) | |
| download | linux-dev-7718cf03c3ce4b6ebd90107643ccd01c952a1fce.tar.xz linux-dev-7718cf03c3ce4b6ebd90107643ccd01c952a1fce.zip | |
IB/iser: bound protection_sg size by data_sg size
In case we don't set the sg_prot_tablesize, the scsi layer assign the
default size (65535 entries). We should limit this size since we should
take into consideration the underlaying device capability. This cap is
considered when calculating the sg_tablesize. Otherwise, for example,
we can get that /sys/block/sdb/queue/max_segments is 128 and
/sys/block/sdb/queue/max_integrity_segments is 65535.
Link: https://lore.kernel.org/r/1569359027-10987-1-git-send-email-maxg@mellanox.com
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/ulp')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iscsi_iser.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 2e72fc5af157..c4c015c60446 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -646,6 +646,7 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep, if (ib_conn->pi_support) { u32 sig_caps = ib_dev->attrs.sig_prot_cap; + shost->sg_prot_tablesize = shost->sg_tablesize; scsi_host_set_prot(shost, iser_dif_prot_caps(sig_caps)); scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP | SHOST_DIX_GUARD_CRC); |