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authorIra Weiny <ira.weiny@intel.com>2015-06-06 14:38:29 -0400
committerDoug Ledford <dledford@redhat.com>2015-06-12 14:49:17 -0400
commit337877a466bb8b0c51f4fa727eeef7d734665632 (patch)
tree3d05512e358f2fe92e15db23a2b7bc18312f116b /include/rdma
parentda2dfaa3a35cb5b68fc6ab2e442339de03cacd09 (diff)
IB/core: Add ability for drivers to report an alternate MAD size.
Add max MAD size to the device immutable data set and have all drivers that support MADs report the current IB MAD size (IB_MGMT_MAD_SIZE) to the core. Verify MAD size data in both the MAD core and when reading the immutable data. OPA drivers will report alternate MAD sizes in subsequent patches. Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/ib_mad.h1
-rw-r--r--include/rdma/ib_verbs.h18
2 files changed, 19 insertions, 0 deletions
diff --git a/include/rdma/ib_mad.h b/include/rdma/ib_mad.h
index bf03ce07c316..349880696abc 100644
--- a/include/rdma/ib_mad.h
+++ b/include/rdma/ib_mad.h
@@ -135,6 +135,7 @@ enum {
IB_MGMT_SA_DATA = 200,
IB_MGMT_DEVICE_HDR = 64,
IB_MGMT_DEVICE_DATA = 192,
+ IB_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + IB_MGMT_MAD_DATA,
};
struct ib_mad_hdr {
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index b02778812729..75c349969b6e 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1534,6 +1534,7 @@ struct ib_port_immutable {
int pkey_tbl_len;
int gid_tbl_len;
u32 core_cap_flags;
+ u32 max_mad_size;
};
struct ib_device {
@@ -2052,6 +2053,23 @@ static inline bool rdma_cap_read_multi_sge(struct ib_device *device,
return !(device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP);
}
+/**
+ * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
+ *
+ * @device: Device
+ * @port_num: Port number
+ *
+ * This MAD size includes the MAD headers and MAD payload. No other headers
+ * are included.
+ *
+ * Return the max MAD size required by the Port. Will return 0 if the port
+ * does not support MADs
+ */
+static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
+{
+ return device->port_immutable[port_num].max_mad_size;
+}
+
int ib_query_gid(struct ib_device *device,
u8 port_num, int index, union ib_gid *gid);

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