IPoIB: Specify Traffic Class with path record queries for QoS support

To support QoS within and between subnets, modify IPoIB to request
specific Traffic Class values with path record queries, using
the value associated with the IPoIB broadcast group.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>

[ See some comments I made on this at v1 and v2 of the posts
  <http://lists.openfabrics.org/pipermail/general/2007-August/039275.html>
  <http://lists.openfabrics.org/pipermail/general/2007-September/040312.html> ]

Reviewed-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

3 files changed, 26 insertions, 26 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 285c143115cc..fc16bced8e54 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -113,7 +113,27 @@ struct ipoib_pseudoheader {
         u8  hwaddr[INFINIBAND_ALEN];
 };
 
-struct ipoib_mcast;
+/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
+struct ipoib_mcast {
+        struct ib_sa_mcmember_rec mcmember;
+        struct ib_sa_multicast   *mc;
+        struct ipoib_ah          *ah;
+
+        struct rb_node    rb_node;
+        struct list_head  list;
+
+        unsigned long created;
+        unsigned long backoff;
+
+        unsigned long flags;
+        unsigned char logcount;
+
+        struct list_head  neigh_list;
+
+        struct sk_buff_head pkt_queue;
+
+        struct net_device *dev;
+};
 
 struct ipoib_rx_buf {
         struct sk_buff *skb;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 5f948b9a9943..900335a36e45 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -468,9 +468,10 @@ static struct ipoib_path *path_rec_create(struct net_device *dev, void *gid)
         INIT_LIST_HEAD(&path->neigh_list);
 
         memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid));
-        path->pathrec.sgid      = priv->local_gid;
-        path->pathrec.pkey      = cpu_to_be16(priv->pkey);
-        path->pathrec.numb_path = 1;
+        path->pathrec.sgid          = priv->local_gid;
+        path->pathrec.pkey          = cpu_to_be16(priv->pkey);
+        path->pathrec.numb_path     = 1;
+        path->pathrec.traffic_class = priv->broadcast->mcmember.traffic_class;
 
         return path;
 }
@@ -491,6 +492,7 @@ static int path_rec_start(struct net_device *dev,
                                    IB_SA_PATH_REC_DGID          |
                                    IB_SA_PATH_REC_SGID          |
                                    IB_SA_PATH_REC_NUMB_PATH     |
+                                   IB_SA_PATH_REC_TRAFFIC_CLASS |
                                    IB_SA_PATH_REC_PKEY,
                                    1000, GFP_ATOMIC,
                                    path_rec_completion,
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index aae367057a56..94a57097e2b4 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -57,28 +57,6 @@ MODULE_PARM_DESC(mcast_debug_level,
 
 static DEFINE_MUTEX(mcast_mutex);
 
-/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
-struct ipoib_mcast {
-        struct ib_sa_mcmember_rec mcmember;
-        struct ib_sa_multicast   *mc;
-        struct ipoib_ah          *ah;
-
-        struct rb_node    rb_node;
-        struct list_head  list;
-
-        unsigned long created;
-        unsigned long backoff;
-
-        unsigned long flags;
-        unsigned char logcount;
-
-        struct list_head  neigh_list;
-
-        struct sk_buff_head pkt_queue;
-
-        struct net_device *dev;
-};
-
 struct ipoib_mcast_iter {
         struct net_device *dev;
         union ib_gid       mgid;