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path: root/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
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Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c')
-rw-r--r--drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
index faa06edf95ac..8c67505865a4 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
@@ -168,6 +168,7 @@ void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb)
return;
}
+ rcu_read_lock();
for (i = 0; i < count; i++) {
ipv4_addr = payload->tun_info[i].ipv4;
port = be32_to_cpu(payload->tun_info[i].egress_port);
@@ -183,6 +184,7 @@ void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb)
neigh_event_send(n, NULL);
neigh_release(n);
}
+ rcu_read_unlock();
}
static int
@@ -367,9 +369,10 @@ void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb)
payload = nfp_flower_cmsg_get_data(skb);
+ rcu_read_lock();
netdev = nfp_app_dev_get(app, be32_to_cpu(payload->ingress_port), NULL);
if (!netdev)
- goto route_fail_warning;
+ goto fail_rcu_unlock;
flow.daddr = payload->ipv4_addr;
flow.flowi4_proto = IPPROTO_UDP;
@@ -379,21 +382,23 @@ void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb)
rt = ip_route_output_key(dev_net(netdev), &flow);
err = PTR_ERR_OR_ZERO(rt);
if (err)
- goto route_fail_warning;
+ goto fail_rcu_unlock;
#else
- goto route_fail_warning;
+ goto fail_rcu_unlock;
#endif
/* Get the neighbour entry for the lookup */
n = dst_neigh_lookup(&rt->dst, &flow.daddr);
ip_rt_put(rt);
if (!n)
- goto route_fail_warning;
- nfp_tun_write_neigh(n->dev, app, &flow, n, GFP_KERNEL);
+ goto fail_rcu_unlock;
+ nfp_tun_write_neigh(n->dev, app, &flow, n, GFP_ATOMIC);
neigh_release(n);
+ rcu_read_unlock();
return;
-route_fail_warning:
+fail_rcu_unlock:
+ rcu_read_unlock();
nfp_flower_cmsg_warn(app, "Requested route not found.\n");
}