From: Jack Wang <jinpu.wang@profitbricks.com>
Date: Mon, 2 Jan 2017 12:17:36 +0000 (+0100)
Subject: RDMA/core: add port state cache
X-Git-Tag: MMI-PSA29.97-13-9~6101^2~40
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=aaaca121c7cf9217ab81d9db0a04835d52aabebe;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

RDMA/core: add port state cache

We need a port state cache in ib_core, later we will use in rdma_cm.

Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Reviewed-by: Michael Wang <yun.wang@profitbricks.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---

diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index ae04826e82fc..87fd7c39fbc0 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -1105,6 +1105,8 @@ static void ib_cache_update(struct ib_device *device,
 	}
 
 	device->cache.lmc_cache[port - rdma_start_port(device)] = tprops->lmc;
+	device->cache.port_state_cache[port - rdma_start_port(device)] =
+		tprops->state;
 
 	write_unlock_irq(&device->cache.lock);
 
@@ -1164,7 +1166,11 @@ int ib_cache_setup_one(struct ib_device *device)
 					  (rdma_end_port(device) -
 					   rdma_start_port(device) + 1),
 					  GFP_KERNEL);
-	if (!device->cache.pkey_cache ||
+	device->cache.port_state_cache = kmalloc(sizeof *device->cache.port_state_cache *
+					  (rdma_end_port(device) -
+					   rdma_start_port(device) + 1),
+					  GFP_KERNEL);
+	if (!device->cache.pkey_cache || !device->cache.port_state_cache ||
 	    !device->cache.lmc_cache) {
 		err = -ENOMEM;
 		goto free;
@@ -1190,6 +1196,7 @@ err:
 free:
 	kfree(device->cache.pkey_cache);
 	kfree(device->cache.lmc_cache);
+	kfree(device->cache.port_state_cache);
 	return err;
 }
 
@@ -1211,6 +1218,7 @@ void ib_cache_release_one(struct ib_device *device)
 	gid_table_release_one(device);
 	kfree(device->cache.pkey_cache);
 	kfree(device->cache.lmc_cache);
+	kfree(device->cache.port_state_cache);
 }
 
 void ib_cache_cleanup_one(struct ib_device *device)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 958a24d8fae7..fafa988e0e9a 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1781,6 +1781,7 @@ struct ib_cache {
 	struct ib_pkey_cache  **pkey_cache;
 	struct ib_gid_table   **gid_cache;
 	u8                     *lmc_cache;
+	enum ib_port_state     *port_state_cache;
 };
 
 struct ib_dma_mapping_ops {