linux-imx

// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2007-2012 Nicira, Inc.

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/if_arp.h>

#include <linux/if_bridge.h>

#include <linux/if_vlan.h>

#include <linux/kernel.h>

#include <linux/llc.h>

#include <linux/rtnetlink.h>

#include <linux/skbuff.h>

#include <linux/openvswitch.h>

#include <linux/export.h>

​

#include <net/ip_tunnels.h>

#include <net/rtnetlink.h>

​

#include "datapath.h"

#include "vport.h"

#include "vport-internal_dev.h"

#include "vport-netdev.h"

​

static struct vport_ops ovs_netdev_vport_ops;

​

/* 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;

​

    if (skb->dev->type == ARPHRD_ETHER) {

        skb_push(skb, ETH_HLEN);

        skb_postpush_rcsum(skb, skb->data, ETH_HLEN);

    }

    ovs_vport_receive(vport, skb, skb_tunnel_info(skb));

    return;

error:

    kfree_skb(skb);

}

​

/* Called with rcu_read_lock and bottom-halves disabled. */

static rx_handler_result_t netdev_frame_hook(struct sk_buff **pskb)

{

    struct sk_buff *skb = *pskb;

​

    if (unlikely(skb->pkt_type == PACKET_LOOPBACK))

        return RX_HANDLER_PASS;