RDMA/rxe: Remove VLAN code leftovers from RXE

Since the commit fd49ddaf7e ("RDMA/rxe: prevent rxe creation on top of
vlan interface") does not permit rxe on top of vlan device, all the stuff
related with vlan should be removed.

Fixes: fd49ddaf7e ("RDMA/rxe: prevent rxe creation on top of vlan interface")
Link: https://lore.kernel.org/r/1604326422-18625-1-git-send-email-yanjunz@nvidia.com
Signed-off-by: Zhu Yanjun <yanjunz@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/sw/rxe/rxe_net.c

@@ -8,7 +8,6 @@
 #include <linux/if_arp.h>
 #include <linux/netdevice.h>
 #include <linux/if.h>
-#include <linux/if_vlan.h>
 #include <net/udp_tunnel.h>
 #include <net/sch_generic.h>
 #include <linux/netfilter.h>
@@ -26,9 +25,6 @@ struct device *rxe_dma_device(struct rxe_dev *rxe)
 
 	ndev = rxe->ndev;
 
-	if (is_vlan_dev(ndev))
-		ndev = vlan_dev_real_dev(ndev);
-
 	return ndev->dev.parent;
 }
 
@@ -166,14 +162,9 @@ static int rxe_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
 {
 	struct udphdr *udph;
 	struct net_device *ndev = skb->dev;
-	struct net_device *rdev = ndev;
 	struct rxe_dev *rxe = rxe_get_dev_from_net(ndev);
 	struct rxe_pkt_info *pkt = SKB_TO_PKT(skb);
 
-	if (!rxe && is_vlan_dev(rdev)) {
-		rdev = vlan_dev_real_dev(ndev);
-		rxe = rxe_get_dev_from_net(rdev);
-	}
 	if (!rxe)
 		goto drop;
 

drivers/infiniband/sw/rxe/rxe_resp.c

@@ -872,11 +872,6 @@ static enum resp_states do_complete(struct rxe_qp *qp,
 			else
 				wc->network_hdr_type = RDMA_NETWORK_IPV6;
 
-			if (is_vlan_dev(skb->dev)) {
-				wc->wc_flags |= IB_WC_WITH_VLAN;
-				wc->vlan_id = vlan_dev_vlan_id(skb->dev);
-			}
-
 			if (pkt->mask & RXE_IMMDT_MASK) {
 				wc->wc_flags |= IB_WC_WITH_IMM;
 				wc->ex.imm_data = immdt_imm(pkt);