53cf527513
This patch adds two more ndo ops: ndo_add_rx_vxlan_port() and ndo_del_rx_vxlan_port(). Drivers can get notifications through the above functions about changes of the UDP listening port of VXLAN. Also, when physical ports come up, now they can call vxlan_get_rx_port() in order to obtain the port number(s) of the existing VXLAN interface in case they already up before them. This information about the listening UDP port would be used for VXLAN related offloads. A big thank you to John Fastabend (john.r.fastabend@intel.com) for his input and his suggestions on this patch set. CC: John Fastabend <john.r.fastabend@intel.com> CC: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Joseph Gasparakis <joseph.gasparakis@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
41 lines
1 KiB
C
41 lines
1 KiB
C
#ifndef __NET_VXLAN_H
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#define __NET_VXLAN_H 1
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/udp.h>
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#define VNI_HASH_BITS 10
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#define VNI_HASH_SIZE (1<<VNI_HASH_BITS)
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struct vxlan_sock;
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typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb, __be32 key);
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/* per UDP socket information */
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struct vxlan_sock {
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struct hlist_node hlist;
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vxlan_rcv_t *rcv;
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void *data;
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struct work_struct del_work;
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struct socket *sock;
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struct rcu_head rcu;
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struct hlist_head vni_list[VNI_HASH_SIZE];
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atomic_t refcnt;
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};
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struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
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vxlan_rcv_t *rcv, void *data,
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bool no_share, bool ipv6);
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void vxlan_sock_release(struct vxlan_sock *vs);
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int vxlan_xmit_skb(struct vxlan_sock *vs,
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struct rtable *rt, struct sk_buff *skb,
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__be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
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__be16 src_port, __be16 dst_port, __be32 vni);
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__be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb);
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void vxlan_get_rx_port(struct net_device *netdev);
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#endif
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