return 0;
}
-static int gen_vxlan_header_ipv4(struct net_device *out_dev,
- char buf[],
- unsigned char h_dest[ETH_ALEN],
- int ttl,
- __be32 daddr,
- __be32 saddr,
- __be16 udp_dst_port,
- __be32 vx_vni)
+static void gen_vxlan_header_ipv4(struct net_device *out_dev,
+ char buf[], int encap_size,
+ unsigned char h_dest[ETH_ALEN],
+ int ttl,
+ __be32 daddr,
+ __be32 saddr,
+ __be16 udp_dst_port,
+ __be32 vx_vni)
{
- int encap_size = VXLAN_HLEN + sizeof(struct iphdr) + ETH_HLEN;
struct ethhdr *eth = (struct ethhdr *)buf;
struct iphdr *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
udp->dest = udp_dst_port;
vxh->vx_flags = VXLAN_HF_VNI;
vxh->vx_vni = vxlan_vni_field(vx_vni);
-
- return encap_size;
}
static int gen_vxlan_header_ipv6(struct net_device *out_dev,
struct net_device **out_dev)
{
int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
+ int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN;
struct ip_tunnel_key *tun_key = &e->tun_info.key;
- int encap_size, ttl, err;
struct neighbour *n = NULL;
struct flowi4 fl4 = {};
char *encap_header;
+ int ttl, err;
- encap_header = kzalloc(max_encap_size, GFP_KERNEL);
+ if (max_encap_size < ipv4_encap_size) {
+ mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
+ ipv4_encap_size, max_encap_size);
+ return -EOPNOTSUPP;
+ }
+
+ encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL);
if (!encap_header)
return -ENOMEM;
switch (e->tunnel_type) {
case MLX5_HEADER_TYPE_VXLAN:
- encap_size = gen_vxlan_header_ipv4(*out_dev, encap_header,
- e->h_dest, ttl,
- fl4.daddr,
- fl4.saddr, tun_key->tp_dst,
- tunnel_id_to_key32(tun_key->tun_id));
+ gen_vxlan_header_ipv4(*out_dev, encap_header,
+ ipv4_encap_size, e->h_dest, ttl,
+ fl4.daddr,
+ fl4.saddr, tun_key->tp_dst,
+ tunnel_id_to_key32(tun_key->tun_id));
break;
default:
err = -EOPNOTSUPP;
}
err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
- encap_size, encap_header, &e->encap_id);
+ ipv4_encap_size, encap_header, &e->encap_id);
out:
if (err && n)
neigh_release(n);