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path: root/drivers/infiniband/sw/rxe/rxe_net.c
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Diffstat (limited to 'drivers/infiniband/sw/rxe/rxe_net.c')
-rw-r--r--drivers/infiniband/sw/rxe/rxe_net.c56
1 files changed, 49 insertions, 7 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index 159246b03867..9da6e37fb70c 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -182,11 +182,39 @@ static struct dst_entry *rxe_find_route6(struct net_device *ndev,
#endif
+/*
+ * Derive the net_device from the av.
+ * For physical devices, this will just return rxe->ndev.
+ * But for VLAN devices, it will return the vlan dev.
+ * Caller should dev_put() the returned net_device.
+ */
+static struct net_device *rxe_netdev_from_av(struct rxe_dev *rxe,
+ int port_num,
+ struct rxe_av *av)
+{
+ union ib_gid gid;
+ struct ib_gid_attr attr;
+ struct net_device *ndev = rxe->ndev;
+
+ if (ib_get_cached_gid(&rxe->ib_dev, port_num, av->grh.sgid_index,
+ &gid, &attr) == 0 &&
+ attr.ndev && attr.ndev != ndev)
+ ndev = attr.ndev;
+ else
+ /* Only to ensure that caller may call dev_put() */
+ dev_hold(ndev);
+
+ return ndev;
+}
+
static struct dst_entry *rxe_find_route(struct rxe_dev *rxe,
struct rxe_qp *qp,
struct rxe_av *av)
{
struct dst_entry *dst = NULL;
+ struct net_device *ndev;
+
+ ndev = rxe_netdev_from_av(rxe, qp->attr.port_num, av);
if (qp_type(qp) == IB_QPT_RC)
dst = sk_dst_get(qp->sk->sk);
@@ -201,14 +229,14 @@ static struct dst_entry *rxe_find_route(struct rxe_dev *rxe,
saddr = &av->sgid_addr._sockaddr_in.sin_addr;
daddr = &av->dgid_addr._sockaddr_in.sin_addr;
- dst = rxe_find_route4(rxe->ndev, saddr, daddr);
+ dst = rxe_find_route4(ndev, saddr, daddr);
} else if (av->network_type == RDMA_NETWORK_IPV6) {
struct in6_addr *saddr6;
struct in6_addr *daddr6;
saddr6 = &av->sgid_addr._sockaddr_in6.sin6_addr;
daddr6 = &av->dgid_addr._sockaddr_in6.sin6_addr;
- dst = rxe_find_route6(rxe->ndev, saddr6, daddr6);
+ dst = rxe_find_route6(ndev, saddr6, daddr6);
#if IS_ENABLED(CONFIG_IPV6)
if (dst)
qp->dst_cookie =
@@ -217,6 +245,7 @@ static struct dst_entry *rxe_find_route(struct rxe_dev *rxe,
}
}
+ dev_put(ndev);
return dst;
}
@@ -224,9 +253,14 @@ 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 = net_to_rxe(ndev);
struct rxe_pkt_info *pkt = SKB_TO_PKT(skb);
+ if (!rxe && is_vlan_dev(rdev)) {
+ rdev = vlan_dev_real_dev(ndev);
+ rxe = net_to_rxe(rdev);
+ }
if (!rxe)
goto drop;
@@ -450,7 +484,7 @@ static void rxe_skb_tx_dtor(struct sk_buff *skb)
rxe_drop_ref(qp);
}
-int rxe_send(struct rxe_dev *rxe, struct rxe_pkt_info *pkt, struct sk_buff *skb)
+int rxe_send(struct rxe_pkt_info *pkt, struct sk_buff *skb)
{
struct rxe_av *av;
int err;
@@ -498,6 +532,10 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
{
unsigned int hdr_len;
struct sk_buff *skb;
+ struct net_device *ndev;
+ const int port_num = 1;
+
+ ndev = rxe_netdev_from_av(rxe, port_num, av);
if (av->network_type == RDMA_NETWORK_IPV4)
hdr_len = ETH_HLEN + sizeof(struct udphdr) +
@@ -506,26 +544,30 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
hdr_len = ETH_HLEN + sizeof(struct udphdr) +
sizeof(struct ipv6hdr);
- skb = alloc_skb(paylen + hdr_len + LL_RESERVED_SPACE(rxe->ndev),
+ skb = alloc_skb(paylen + hdr_len + LL_RESERVED_SPACE(ndev),
GFP_ATOMIC);
- if (unlikely(!skb))
+
+ if (unlikely(!skb)) {
+ dev_put(ndev);
return NULL;
+ }
skb_reserve(skb, hdr_len + LL_RESERVED_SPACE(rxe->ndev));
- skb->dev = rxe->ndev;
+ skb->dev = ndev;
if (av->network_type == RDMA_NETWORK_IPV4)
skb->protocol = htons(ETH_P_IP);
else
skb->protocol = htons(ETH_P_IPV6);
pkt->rxe = rxe;
- pkt->port_num = 1;
+ pkt->port_num = port_num;
pkt->hdr = skb_put(skb, paylen);
pkt->mask |= RXE_GRH_MASK;
memset(pkt->hdr, 0, paylen);
+ dev_put(ndev);
return skb;
}