IB/core: Introduce and use rdma_gid_table()

There are several places a gid table is accessed.
Have a helper tiny function rdma_gid_table() to avoid code
duplication at such places.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index 82699f7..0d11538 100644 (file)
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -159,6 +159,11 @@ int ib_cache_gid_parse_type_str(const char *buf)
 }
 EXPORT_SYMBOL(ib_cache_gid_parse_type_str);
 
+static struct ib_gid_table *rdma_gid_table(struct ib_device *device, u8 port)
+{
+       return device->cache.ports[port - rdma_start_port(device)].gid;
+}
+
 static void del_roce_gid(struct ib_device *device, u8 port_num,
                         struct ib_gid_table *table, int ix)
 {
@@ -376,7 +381,7 @@ static int __ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
        if (rdma_is_zero_gid(gid))
                return -EINVAL;
 
-       table = ib_dev->cache.ports[port - rdma_start_port(ib_dev)].gid;
+       table = rdma_gid_table(ib_dev, port);
 
        mutex_lock(&table->lock);
 
@@ -443,7 +448,7 @@ _ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
        int ret = 0;
        int ix;
 
-       table = ib_dev->cache.ports[port - rdma_start_port(ib_dev)].gid;
+       table = rdma_gid_table(ib_dev, port);
 
        mutex_lock(&table->lock);
 
@@ -482,7 +487,7 @@ int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
        int ix;
        bool deleted = false;
 
-       table = ib_dev->cache.ports[port - rdma_start_port(ib_dev)].gid;
+       table = rdma_gid_table(ib_dev, port);
 
        mutex_lock(&table->lock);
 
@@ -506,7 +511,7 @@ static int __ib_cache_gid_get(struct ib_device *ib_dev, u8 port, int index,
 {
        struct ib_gid_table *table;
 
-       table = ib_dev->cache.ports[port - rdma_start_port(ib_dev)].gid;
+       table = rdma_gid_table(ib_dev, port);
 
        if (index < 0 || index >= table->sz)
                return -EINVAL;
@@ -599,7 +604,7 @@ int ib_find_cached_gid_by_port(struct ib_device *ib_dev,
        if (!rdma_is_port_valid(ib_dev, port))
                return -ENOENT;
 
-       table = ib_dev->cache.ports[port - rdma_start_port(ib_dev)].gid;
+       table = rdma_gid_table(ib_dev, port);
 
        if (ndev)
                mask |= GID_ATTR_FIND_MASK_NETDEV;
@@ -657,7 +662,7 @@ static int ib_cache_gid_find_by_filter(struct ib_device *ib_dev,
            !rdma_protocol_roce(ib_dev, port))
                return -EPROTONOSUPPORT;
 
-       table = ib_dev->cache.ports[port - rdma_start_port(ib_dev)].gid;
+       table = rdma_gid_table(ib_dev, port);
 
        read_lock_irqsave(&table->rwlock, flags);
        for (i = 0; i < table->sz; i++) {
@@ -756,7 +761,7 @@ void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
        unsigned int gid_type;
        unsigned long mask;
 
-       table = ib_dev->cache.ports[port - rdma_start_port(ib_dev)].gid;
+       table = rdma_gid_table(ib_dev, port);
 
        mask = GID_ATTR_FIND_MASK_GID_TYPE |
               GID_ATTR_FIND_MASK_DEFAULT |
@@ -877,7 +882,7 @@ int ib_get_cached_gid(struct ib_device *device,
        if (!rdma_is_port_valid(device, port_num))
                return -EINVAL;
 
-       table = device->cache.ports[port_num - rdma_start_port(device)].gid;
+       table = rdma_gid_table(device, port_num);
        read_lock_irqsave(&table->rwlock, flags);
        res = __ib_cache_gid_get(device, port_num, index, gid, gid_attr);
        read_unlock_irqrestore(&table->rwlock, flags);
@@ -1095,7 +1100,7 @@ static int config_non_roce_gid_cache(struct ib_device *device,
 
        gid_attr.device = device;
        gid_attr.port_num = port;
-       table = device->cache.ports[port - rdma_start_port(device)].gid;
+       table = rdma_gid_table(device, port);
 
        mutex_lock(&table->lock);
        for (i = 0; i < gid_tbl_len; ++i) {
@@ -1128,7 +1133,7 @@ static void ib_cache_update(struct ib_device *device,
        if (!rdma_is_port_valid(device, port))
                return;
 
-       table = device->cache.ports[port - rdma_start_port(device)].gid;
+       table = rdma_gid_table(device, port);
 
        tprops = kmalloc(sizeof *tprops, GFP_KERNEL);
        if (!tprops)