C++ (Cpp) gre_build_header Examples

Example #1

File: ip_gre.c Project: upa/ovbench

static void __gre_xmit(struct sk_buff *skb, struct net_device *dev,
		       const struct iphdr *tnl_params,
		       __be16 proto)
{
	struct ip_tunnel *tunnel = netdev_priv(dev);
	struct tnl_ptk_info tpi;

	if (OVTYPE_IS_GRE (skb)) {
		gre_gre_xmit_in (skb) = rdtsc ();
	}
	if (OVTYPE_IS_GRETAP (skb)) {
		gretap_gre_xmit_in (skb) = rdtsc ();
	}

	tpi.flags = tunnel->parms.o_flags;
	tpi.proto = proto;
	tpi.key = tunnel->parms.o_key;
	if (tunnel->parms.o_flags & TUNNEL_SEQ)
		tunnel->o_seqno++;
	tpi.seq = htonl(tunnel->o_seqno);

	/* Push GRE header. */
	gre_build_header(skb, &tpi, tunnel->tun_hlen);

	skb_set_inner_protocol(skb, tpi.proto);

	ip_tunnel_xmit(skb, dev, tnl_params, tnl_params->protocol);
}

Example #2

File: ip_gre.c Project: AICP/kernel_moto_shamu

static void __gre_xmit(struct sk_buff *skb, struct net_device *dev,
		       const struct iphdr *tnl_params,
		       __be16 proto)
{
	struct ip_tunnel *tunnel = netdev_priv(dev);
	struct tnl_ptk_info tpi;

	if (likely(!skb->encapsulation)) {
		skb_reset_inner_headers(skb);
		skb->encapsulation = 1;
	}

	tpi.flags = tunnel->parms.o_flags;
	tpi.proto = proto;
	tpi.key = tunnel->parms.o_key;
	if (tunnel->parms.o_flags & TUNNEL_SEQ)
		tunnel->o_seqno++;
	tpi.seq = htonl(tunnel->o_seqno);

	/* Push GRE header. */
	skb = gre_build_header(skb, &tpi, tunnel->hlen);
	if (unlikely(!skb)) {
		dev->stats.tx_dropped++;
		return;
	}

	ip_tunnel_xmit(skb, dev, tnl_params);
}

Example #3

File: ip_gre.c Project: acton393/linux

static void __gre_xmit(struct sk_buff *skb, struct net_device *dev,
		       const struct iphdr *tnl_params,
		       __be16 proto)
{
	struct ip_tunnel *tunnel = netdev_priv(dev);

	if (tunnel->parms.o_flags & TUNNEL_SEQ)
		tunnel->o_seqno++;

	/* Push GRE header. */
	gre_build_header(skb, tunnel->tun_hlen,
			 tunnel->parms.o_flags, proto, tunnel->parms.o_key,
			 htonl(tunnel->o_seqno));

	ip_tunnel_xmit(skb, dev, tnl_params, tnl_params->protocol);
}

Example #4

File: vport-gre.c Project: spacex/kernel-centos7

static struct sk_buff *__build_header(struct sk_buff *skb,
				      int tunnel_hlen)
{
	const struct ovs_key_ipv4_tunnel *tun_key = OVS_CB(skb)->egress_tun_key;
	struct tnl_ptk_info tpi;

	skb = gre_handle_offloads(skb, !!(tun_key->tun_flags & TUNNEL_CSUM));
	if (IS_ERR(skb))
		return NULL;

	tpi.flags = filter_tnl_flags(tun_key->tun_flags);
	tpi.proto = htons(ETH_P_TEB);
	tpi.key = be64_get_low32(tun_key->tun_id);
	tpi.seq = 0;
	gre_build_header(skb, &tpi, tunnel_hlen);

	return skb;
}

Example #5

File: ip_gre.c Project: openvswitch/ovs

static void __gre_xmit(struct sk_buff *skb, struct net_device *dev,
		       const struct iphdr *tnl_params,
		       __be16 proto)
{
	struct ip_tunnel *tunnel = netdev_priv(dev);
	struct tnl_ptk_info tpi;

	tpi.flags = tunnel->parms.o_flags;
	tpi.proto = proto;
	tpi.key = tunnel->parms.o_key;
	if (tunnel->parms.o_flags & TUNNEL_SEQ)
		tunnel->o_seqno++;
	tpi.seq = htonl(tunnel->o_seqno);

	/* Push GRE header. */
	gre_build_header(skb, &tpi, tunnel->hlen);

	ip_tunnel_xmit(skb, dev, tnl_params, tnl_params->protocol);
}