【C语言】linux内核ipoib模块 - ipoib_start_xmit

一、ipoib_start_xmit函数定义

static netdev_tx_t ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
    struct ipoib_dev_priv *priv = ipoib_priv(dev);
    struct rdma_netdev *rn = netdev_priv(dev);
    struct ipoib_neigh *neigh;
    struct ipoib_pseudo_header *phdr;
    struct ipoib_header *header;
    unsigned long flags;
    phdr = (struct ipoib_pseudo_header *) skb->data;
    skb_pull(skb, sizeof(*phdr));
    header = (struct ipoib_header *) skb->data;
    if (unlikely(phdr->hwaddr[4] == 0xff)) {
        /* multicast, arrange "if" according to probability */
        if ((header->proto != htons(ETH_P_IP)) &&
            (header->proto != htons(ETH_P_IPV6)) &&