path: root/drivers/infiniband/core/core_priv.h
diff options
authorHuy Nguyen <huyn@mellanox.com>2018-01-08 12:15:38 +0200
committerJason Gunthorpe <jgg@mellanox.com>2018-01-10 22:00:32 -0700
commit8cf12d7780b72ee421d18e1f8a15daf43fa6d1e6 (patch)
tree35724d9b304785e271624b00c555356402bd6b17 /drivers/infiniband/core/core_priv.h
parentIB/core: Remove the locking for character device bitmaps (diff)
IB/core: Increase number of char device minors
There is a need to increase number of possible char devices to support large number of SR-IOV instances. The current limit is in the range of 64-128 devices/ports. Increase it to support up to 1024. The patch performs the following steps to refactor the code: 1. Removes the split bitmap for fixed and overflow dev numbers. 2. Pre-allocates the non-legacy major number range during driver initialization, choosen for simplicity. 3. Add new define (RDMA_MAX_PORTS) that is shared between all drivers. This is the maximum total number of ports on all struct ib_devices. 4. Set RDMA_MAX_PORTS to 1024. Signed-off-by: Huy Nguyen <huyn@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/core_priv.h')
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index 74091bdca245..aef9aa0ac0e6 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -42,6 +42,9 @@
#include <rdma/ib_mad.h>
#include "mad_priv.h"
+/* Total number of ports combined across all struct ib_devices's */
+#define RDMA_MAX_PORTS 1024
struct pkey_index_qp_list {
struct list_head pkey_index_list;
u16 pkey_index;