C++ (Cpp) tnl_skb_gso_segment示例

示例#1

文件： gso.c 项目： ALutzG/ovs

int rpl_ip6_local_out(struct net *net, struct sock *sk, struct sk_buff *skb)
{

	if (!OVS_GSO_CB(skb)->fix_segment)
		return output_ipv6(skb);

	if (skb_is_gso(skb)) {
		int ret;

		skb = tnl_skb_gso_segment(skb, 0, false, AF_INET6);
		if (!skb || IS_ERR(skb))
			return NET_XMIT_DROP;

		do {
			struct sk_buff *next_skb = skb->next;

			skb->next = NULL;
			ret = output_ipv6(skb);
			skb = next_skb;
		} while (skb);
		return ret;
	}  else if (skb->ip_summed == CHECKSUM_PARTIAL) {
		int err;

		err = skb_checksum_help(skb);
		if (unlikely(err))
			return NET_XMIT_DROP;
	}

	return output_ipv6(skb);
}

示例#2

文件： gso.c 项目： iovisor-obsolete/old_bpf_historical

int rpl_ip_local_out(struct sk_buff *skb)
{
	int ret = NETDEV_TX_OK;
	int id = -1;

	if (skb_is_gso(skb)) {
		struct iphdr *iph;

		iph = ip_hdr(skb);
		id = ntohs(iph->id);
		skb = tnl_skb_gso_segment(skb, 0, false);
		if (!skb || IS_ERR(skb))
			return 0;
	}  else if (skb->ip_summed == CHECKSUM_PARTIAL) {
		int err;

		err = skb_checksum_help(skb);
		if (unlikely(err))
			return 0;
	}

	while (skb) {
		struct sk_buff *next_skb = skb->next;
		struct iphdr *iph;
		int err;

		skb->next = NULL;

		iph = ip_hdr(skb);
		if (id >= 0)
			iph->id = htons(id++);

		memset(IPCB(skb), 0, sizeof(*IPCB(skb)));

#undef ip_local_out
		err = ip_local_out(skb);
		if (unlikely(net_xmit_eval(err)))
			ret = err;

		skb = next_skb;
	}
	return ret;
}

示例#3

文件： gso.c 项目： Grim-lock/ovs

int rpl_ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb)
{
	if (!OVS_GSO_CB(skb)->fix_segment)
		return output_ip(skb);

	/* This bit set can confuse some drivers on old kernel. */
	skb->encapsulation = 0;

	if (skb_is_gso(skb)) {
		int ret;
		int id;

		skb = tnl_skb_gso_segment(skb, 0, false, AF_INET);
		if (!skb || IS_ERR(skb))
			return NET_XMIT_DROP;

		id = ntohs(ip_hdr(skb)->id);
		do {
			struct sk_buff *next_skb = skb->next;

			skb->next = NULL;
			ip_hdr(skb)->id = htons(id++);

			ret = output_ip(skb);
			skb = next_skb;
		} while (skb);
		return ret;
	}  else if (skb->ip_summed == CHECKSUM_PARTIAL) {
		int err;

		err = skb_checksum_help(skb);
		if (unlikely(err))
			return NET_XMIT_DROP;
	}

	return output_ip(skb);
}