Esempi in C++ (Cpp) per ovs_skb_postpush_rcsum

Esempio n. 1

File: vport-netdev.c Progetto: DenisLug/mptcp

/* Must be called with rcu_read_lock. */
static void netdev_port_receive(struct sk_buff *skb)
{
	struct vport *vport;

	vport = ovs_netdev_get_vport(skb->dev);
	if (unlikely(!vport))
		goto error;

	if (unlikely(skb_warn_if_lro(skb)))
		goto error;

	/* Make our own copy of the packet.  Otherwise we will mangle the
	 * packet for anyone who came before us (e.g. tcpdump via AF_PACKET).
	 */
	skb = skb_share_check(skb, GFP_ATOMIC);
	if (unlikely(!skb))
		return;

	skb_push(skb, ETH_HLEN);
	ovs_skb_postpush_rcsum(skb, skb->data, ETH_HLEN);
	ovs_vport_receive(vport, skb, skb_tunnel_info(skb));
	return;
error:
	kfree_skb(skb);
}

Esempio n. 2

File: vport-netdev.c Progetto: wenxueliu/ovs_note

/* Must be called with rcu_read_lock. */
static void netdev_port_receive(struct vport *vport, struct sk_buff *skb)
{
	if (unlikely(!vport))
		goto error;

	if (unlikely(skb_warn_if_lro(skb)))
		goto error;

	/* Make our own copy of the packet.  Otherwise we will mangle the
	 * packet for anyone who came before us (e.g. tcpdump via AF_PACKET).
	 * (No one comes after us, since we tell handle_bridge() that we took
	 * the packet.)
	 */
	skb = skb_share_check(skb, GFP_ATOMIC);
	if (unlikely(!skb))
		return;

	skb_push(skb, ETH_HLEN);
	ovs_skb_postpush_rcsum(skb, skb->data, ETH_HLEN);

	ovs_vport_receive(vport, skb, NULL);
	return;

error:
	kfree_skb(skb);
}

Esempio n. 3

File: actions.c Progetto: MohanaPriya26/ovs-reviews

static int set_eth_addr(struct sk_buff *skb,
			const struct ovs_key_ethernet *eth_key)
{
	int err;
	err = make_writable(skb, ETH_HLEN);
	if (unlikely(err))
		return err;

	skb_postpull_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);

	ether_addr_copy(eth_hdr(skb)->h_source, eth_key->eth_src);
	ether_addr_copy(eth_hdr(skb)->h_dest, eth_key->eth_dst);

	ovs_skb_postpush_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);

	return 0;
}

Esempio n. 4

File: actions.c Progetto: daolicloud/daolinet-openstack

static int set_eth_addr(struct sk_buff *skb, struct sw_flow_key *flow_key,
			const struct ovs_key_ethernet *key,
			const struct ovs_key_ethernet *mask)
{
	int err;

	err = skb_ensure_writable(skb, ETH_HLEN);
	if (unlikely(err))
		return err;

	skb_postpull_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);
//added by daolicloud
        if (ETH_P_ARP == ntohs(eth_hdr(skb)->h_proto)) {
            struct arphdr *p = arp_hdr(skb);
            unsigned char ip[4];
            struct arpft *pdata = (struct arpft *)((unsigned char *)p + sizeof(struct arphdr));
            if(ARPOP_REQUEST == ntohs(p->ar_op)) {
                p->ar_op = htons(ARPOP_REPLY);
                memcpy(ip, pdata->ar_sip, 4);
                memcpy(pdata->ar_sha, key->eth_src, ETH_ALEN);
                memcpy(pdata->ar_sip, pdata->ar_tip, 4);
                memcpy(pdata->ar_tha, eth_hdr(skb)->h_source, ETH_ALEN);
                memcpy(pdata->ar_tip, ip, 4);
                memcpy(eth_hdr(skb)->h_dest, eth_hdr(skb)->h_source, ETH_ALEN);
            } else {
		ether_addr_copy_masked(eth_hdr(skb)->h_dest, key->eth_dst,
			       mask->eth_dst);
            }
        } else {
		ether_addr_copy_masked(eth_hdr(skb)->h_dest, key->eth_dst,
			       mask->eth_dst);
        }

////
	ether_addr_copy_masked(eth_hdr(skb)->h_source, key->eth_src,
			       mask->eth_src);

	ovs_skb_postpush_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);

	ether_addr_copy(flow_key->eth.src, eth_hdr(skb)->h_source);
	ether_addr_copy(flow_key->eth.dst, eth_hdr(skb)->h_dest);
	return 0;
}

Esempio n. 5

File: actions.c Progetto: Seagate/SMR_FS-EXT4

static int set_eth_addr(struct sk_buff *skb, struct sw_flow_key *flow_key,
			const struct ovs_key_ethernet *key,
			const struct ovs_key_ethernet *mask)
{
	int err;

	err = skb_ensure_writable(skb, ETH_HLEN);
	if (unlikely(err))
		return err;

	skb_postpull_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);

	ether_addr_copy_masked(eth_hdr(skb)->h_source, key->eth_src,
			       mask->eth_src);
	ether_addr_copy_masked(eth_hdr(skb)->h_dest, key->eth_dst,
			       mask->eth_dst);

	ovs_skb_postpush_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);

	ether_addr_copy(flow_key->eth.src, eth_hdr(skb)->h_source);
	ether_addr_copy(flow_key->eth.dst, eth_hdr(skb)->h_dest);
	return 0;
}