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IB/rxe: Use rdma GID API

Browse source 
rxe_netdev_from_av can now be done by the core code directly from the
gid_attrs, no need for a helper in the driver.

ib_find_cached_gid_by_port can be switched to use the rdma version here as
well.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Parav Pandit 2018-06-05 08:40:23 +03:00 committed by Jason Gunthorpe
parent 1dfce29457
commit 82f82ceb8e
2 changed files with 25 additions and 37 deletions
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50
drivers/infiniband/sw/rxe/rxe_net.c
View file

@ -182,39 +182,19 @@ 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)
{
const struct ib_gid_attr *attr;
struct dst_entry *dst = NULL;
struct net_device *ndev;
ndev = rxe_netdev_from_av(rxe, qp->attr.port_num, av);
attr = rdma_get_gid_attr(&rxe->ib_dev, qp->attr.port_num,
av->grh.sgid_index);
if (IS_ERR(attr))
return NULL;
ndev = attr->ndev;
if (qp_type(qp) == IB_QPT_RC)
dst = sk_dst_get(qp->sk->sk);
@ -244,8 +224,7 @@ static struct dst_entry *rxe_find_route(struct rxe_dev *rxe,
#endif
}
}
dev_put(ndev);
rdma_put_gid_attr(attr);
return dst;
}
@ -536,9 +515,13 @@ 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 struct ib_gid_attr *attr;
const int port_num = 1;
ndev = rxe_netdev_from_av(rxe, port_num, av);
attr = rdma_get_gid_attr(&rxe->ib_dev, port_num, av->grh.sgid_index);
if (IS_ERR(attr))
return NULL;
ndev = attr->ndev;
if (av->network_type == RDMA_NETWORK_IPV4)
hdr_len = ETH_HLEN + sizeof(struct udphdr) +
@ -550,10 +533,8 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
skb = alloc_skb(paylen + hdr_len + LL_RESERVED_SPACE(ndev),
GFP_ATOMIC);
if (unlikely(!skb)) {
dev_put(ndev);
return NULL;
}
if (unlikely(!skb))
goto out;
skb_reserve(skb, hdr_len + LL_RESERVED_SPACE(rxe->ndev));
@ -568,7 +549,8 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
pkt->hdr = skb_put_zero(skb, paylen);
pkt->mask |= RXE_GRH_MASK;
dev_put(ndev);
out:
rdma_put_gid_attr(attr);
return skb;
}

12
drivers/infiniband/sw/rxe/rxe_recv.c
View file

@ -328,6 +328,7 @@ static void rxe_rcv_mcast_pkt(struct rxe_dev *rxe, struct sk_buff *skb)
static int rxe_match_dgid(struct rxe_dev *rxe, struct sk_buff *skb)
{
const struct ib_gid_attr *gid_attr;
union ib_gid dgid;
union ib_gid *pdgid;
@ -339,9 +340,14 @@ static int rxe_match_dgid(struct rxe_dev *rxe, struct sk_buff *skb)
pdgid = (union ib_gid *)&ipv6_hdr(skb)->daddr;
}
return ib_find_cached_gid_by_port(&rxe->ib_dev, pdgid,
IB_GID_TYPE_ROCE_UDP_ENCAP,
1, skb->dev, NULL);
gid_attr = rdma_find_gid_by_port(&rxe->ib_dev, pdgid,
IB_GID_TYPE_ROCE_UDP_ENCAP,
1, skb->dev);
if (IS_ERR(gid_attr))
return PTR_ERR(gid_attr);
rdma_put_gid_attr(gid_attr);
return 0;
}
/* rxe_rcv is called from the interface driver */