RDMA/cxgb4: Fix vlan support

RDMA connections over a vlan interface don't work due to
import_ep() not using the correct egress device.

 - use the real device in import_ep()
 - use rdma_vlan_dev_real_dev() in get_real_dev().

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 8 insertions, 9 deletions

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 1f863a96a480..28114e6b02e9 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -47,6 +47,8 @@
 #include <net/ip6_route.h>
 #include <net/addrconf.h>
 
+#include <rdma/ib_addr.h>
+
 #include "iw_cxgb4.h"
 
 static char *states[] = {
@@ -341,10 +343,7 @@ static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
 
 static struct net_device *get_real_dev(struct net_device *egress_dev)
 {
-        struct net_device *phys_dev = egress_dev;
-        if (egress_dev->priv_flags & IFF_802_1Q_VLAN)
-                phys_dev = vlan_dev_real_dev(egress_dev);
-        return phys_dev;
+        return rdma_vlan_dev_real_dev(egress_dev) ? : egress_dev;
 }
 
 static int our_interface(struct c4iw_dev *dev, struct net_device *egress_dev)
@@ -1746,16 +1745,16 @@ static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip,
                 if (!ep->l2t)
                         goto out;
                 ep->mtu = dst_mtu(dst);
-                ep->tx_chan = cxgb4_port_chan(n->dev);
-                ep->smac_idx = (cxgb4_port_viid(n->dev) & 0x7F) << 1;
+                ep->tx_chan = cxgb4_port_chan(pdev);
+                ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
                 step = cdev->rdev.lldi.ntxq /
                         cdev->rdev.lldi.nchan;
-                ep->txq_idx = cxgb4_port_idx(n->dev) * step;
-                ep->ctrlq_idx = cxgb4_port_idx(n->dev);
+                ep->txq_idx = cxgb4_port_idx(pdev) * step;
+                ep->ctrlq_idx = cxgb4_port_idx(pdev);
                 step = cdev->rdev.lldi.nrxq /
                         cdev->rdev.lldi.nchan;
                 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
-                        cxgb4_port_idx(n->dev) * step];
+                        cxgb4_port_idx(pdev) * step];
 
                 if (clear_mpa_v1) {
                         ep->retry_with_mpa_v1 = 0;