IB/core: Expose and rename ib_find_cached_gid_by_port cache API

Sometime consumers might want to search for a GID in a specific port.
For example, when a WC arrives and we want to search the GID
that matches that port - it's better to search only the relevant
port.
Exposing and renaming ib_cache_gid_find_by_port in order to match
the naming convention of the module.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

4 files changed, 26 insertions, 11 deletions

diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index 5c054072ef20..639a7266bfaf 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -409,10 +409,10 @@ static int ib_cache_gid_find(struct ib_device *ib_dev,
                                         mask, port, index);
 }
 
-int ib_cache_gid_find_by_port(struct ib_device *ib_dev,
-                              const union ib_gid *gid,
-                              u8 port, struct net_device *ndev,
-                              u16 *index)
+int ib_find_cached_gid_by_port(struct ib_device *ib_dev,
+                               const union ib_gid *gid,
+                               u8 port, struct net_device *ndev,
+                               u16 *index)
 {
         int local_index;
         struct ib_gid_table **ports_table = ib_dev->cache.gid_cache;
@@ -438,6 +438,7 @@ int ib_cache_gid_find_by_port(struct ib_device *ib_dev,
 
         return -ENOENT;
 }
+EXPORT_SYMBOL(ib_find_cached_gid_by_port);
 
 static struct ib_gid_table *alloc_gid_table(int sz)
 {
diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index 70bb36ebb03b..0df82b1f84c1 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -65,11 +65,6 @@ void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
                               roce_netdev_callback cb,
                               void *cookie);
 
-int ib_cache_gid_find_by_port(struct ib_device *ib_dev,
-                              const union ib_gid *gid,
-                              u8 port, struct net_device *ndev,
-                              u16 *index);
-
 enum ib_cache_gid_default_mode {
         IB_CACHE_GID_DEFAULT_MODE_SET,
         IB_CACHE_GID_DEFAULT_MODE_DELETE
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index f22ce487fd3a..179e8134d57f 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -838,8 +838,8 @@ int ib_find_gid(struct ib_device *device, union ib_gid *gid,
 
         for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) {
                 if (rdma_cap_roce_gid_table(device, port)) {
-                        if (!ib_cache_gid_find_by_port(device, gid, port,
-                                                       ndev, index)) {
+                        if (!ib_find_cached_gid_by_port(device, gid, port,
+                                                        ndev, index)) {
                                 *port_num = port;
                                 return 0;
                         }
diff --git a/include/rdma/ib_cache.h b/include/rdma/ib_cache.h
index dcc9bed9b69a..679d7ca6a3ee 100644
--- a/include/rdma/ib_cache.h
+++ b/include/rdma/ib_cache.h
@@ -75,6 +75,25 @@ int ib_find_cached_gid(struct ib_device *device,
                        u16              *index);
 
 /**
+ * ib_find_cached_gid_by_port - Returns the GID table index where a specified
+ * GID value occurs
+ * @device: The device to query.
+ * @gid: The GID value to search for.
+ * @port_num: The port number of the device where the GID value sould be
+ *   searched.
+ * @ndev: In RoCE, the net device of the device. Null means ignore.
+ * @index: The index into the cached GID table where the GID was found.  This
+ *   parameter may be NULL.
+ *
+ * ib_find_cached_gid() searches for the specified GID value in
+ * the local software cache.
+ */
+int ib_find_cached_gid_by_port(struct ib_device *device,
+                               const union ib_gid *gid,
+                               u8               port_num,
+                               struct net_device *ndev,
+                               u16              *index);
+/**
  * ib_get_cached_pkey - Returns a cached PKey table entry
  * @device: The device to query.
  * @port_num: The port number of the device to query.