diff options
| author | Sagi Grimberg <sagig@mellanox.com> | 2014-12-02 16:57:35 +0200 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-12-12 23:32:26 -0800 |
| commit | 23a548ee656c8ba6da8cb2412070edcd62e2ac5d (patch) | |
| tree | 9aaedc8d899f08a2363293c420919b5bfae04076 /drivers/infiniband | |
| parent | 302cc7c3ca14d21ccdffdebdb61c4fe028f2d5ad (diff) | |
| download | op-kernel-dev-23a548ee656c8ba6da8cb2412070edcd62e2ac5d.zip op-kernel-dev-23a548ee656c8ba6da8cb2412070edcd62e2ac5d.tar.gz | |
iscsi,iser-target: Expose supported protection ops according to t10_pi
iSER will report supported protection operations based on
the tpg attribute t10_pi settings and HCA PI offload capabilities.
If the HCA does not support PI offload or tpg attribute t10_pi is
not set, we fall to SW PI mode.
In order to do that, we move iscsit_get_sup_prot_ops after connection
tpg assignment.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: <stable@vger.kernel.org> # v3.14+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.c | 14 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.h | 1 |
2 files changed, 12 insertions, 3 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 618c815..a6daabc 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -64,7 +64,7 @@ struct rdma_cm_id *isert_setup_id(struct isert_np *isert_np); static inline bool isert_prot_cmd(struct isert_conn *conn, struct se_cmd *cmd) { - return (conn->conn_device->pi_capable && + return (conn->pi_support && cmd->prot_op != TARGET_PROT_NORMAL); } @@ -2324,8 +2324,16 @@ isert_get_sup_prot_ops(struct iscsi_conn *conn) struct isert_conn *isert_conn = (struct isert_conn *)conn->context; struct isert_device *device = isert_conn->conn_device; - if (device->pi_capable) - return TARGET_PROT_ALL; + if (conn->tpg->tpg_attrib.t10_pi) { + if (device->pi_capable) { + pr_info("conn %p PI offload enabled\n", isert_conn); + isert_conn->pi_support = true; + return TARGET_PROT_ALL; + } + } + + pr_info("conn %p PI offload disabled\n", isert_conn); + isert_conn->pi_support = false; return TARGET_PROT_NORMAL; } diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h index 2e7868c..141905f 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.h +++ b/drivers/infiniband/ulp/isert/ib_isert.h @@ -128,6 +128,7 @@ struct isert_conn { atomic_t post_send_buf_count; u32 responder_resources; u32 initiator_depth; + bool pi_support; u32 max_sge; char *login_buf; char *login_req_buf; |
