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IB/core: Add per port immutable struct to ib_device

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As of commit 5eb620c81c "IB/core: Add helpers for uncached GID and P_Key
searches"; pkey_tbl_len and gid_tbl_len are immutable data which are stored in
the ib_device.

The per port core capability flags to be added later are also immutable data to
be stored in the ib_device object.

In preparation for this create a structure for per port immutable data and
place the pkey and gid table lengths within this structure.

"get_port_immutable" is added as a mandatory device function to allow the
drivers to fill in this data.

Signed-off-by: Ira Weiny <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
This commit is contained in:
Ira Weiny 2015-05-13 20:02:58 -04:00 • committed by Doug Ledford
commit 7738613e7c
15 changed files with 249 additions and 37 deletions
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19
include/rdma/ib_verbs.h
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@ -1481,6 +1481,11 @@ struct ib_dma_mapping_ops {
struct iw_cm_verbs;
struct ib_port_immutable {
int pkey_tbl_len;
int gid_tbl_len;
};
struct ib_device {
struct device *dma_device;
@ -1494,8 +1499,10 @@ struct ib_device {
struct list_head client_data_list;
struct ib_cache cache;
int *pkey_tbl_len;
int *gid_tbl_len;
/**
* port_immutable is indexed by port number
*/
struct ib_port_immutable *port_immutable;
int num_comp_vectors;
@ -1684,6 +1691,14 @@ struct ib_device {
u32 local_dma_lkey;
u8 node_type;
u8 phys_port_cnt;
/**
* The following mandatory functions are used only at device
* registration. Keep functions such as these at the end of this
* structure to avoid cache line misses when accessing struct ib_device
* in fast paths.
*/
int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
};
struct ib_client {