IB/mad: Add final OPA MAD processing
For devices which support OPA MADs
1) Use previously defined SMP support functions.
2) Pass correct base version to ib_create_send_mad when processing OPA MADs.
3) Process out_mad_key_index returned by agents for a response. This is
necessary because OPA SMP packets must carry a valid pkey.
4) Carry the correct segment size (OPA vs IBTA) of RMPP messages within
ib_mad_recv_wc.
5) Handle variable length OPA MADs by:
* Adjusting the 'fake' WC for locally routed SMP's to represent the
proper incoming byte_len
* out_mad_size is used from the local HCA agents
1) when sending agent responses on the wire
2) when passing responses through the local_completions
function
NOTE: wc.byte_len includes the GRH length and therefore is different
from the in_mad_size specified to the local HCA agents.
out_mad_size should _not_ include the GRH length as it is added
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c
index 6c42073..c7dcfe4 100644
--- a/drivers/infiniband/core/agent.c
+++ b/drivers/infiniband/core/agent.c
@@ -80,7 +80,7 @@
void agent_send_response(const struct ib_mad_hdr *mad_hdr, const struct ib_grh *grh,
const struct ib_wc *wc, const struct ib_device *device,
- int port_num, int qpn, size_t resp_mad_len)
+ int port_num, int qpn, size_t resp_mad_len, bool opa)
{
struct ib_agent_port_private *port_priv;
struct ib_mad_agent *agent;
@@ -106,11 +106,14 @@
return;
}
+ if (opa && mad_hdr->base_version != OPA_MGMT_BASE_VERSION)
+ resp_mad_len = IB_MGMT_MAD_SIZE;
+
send_buf = ib_create_send_mad(agent, wc->src_qp, wc->pkey_index, 0,
IB_MGMT_MAD_HDR,
resp_mad_len - IB_MGMT_MAD_HDR,
GFP_KERNEL,
- IB_MGMT_BASE_VERSION);
+ mad_hdr->base_version);
if (IS_ERR(send_buf)) {
dev_err(&device->dev, "ib_create_send_mad error\n");
goto err1;