17 	int (*xmit)(struct sk_buff *skb);
22 static int sch_frag_xmit(struct net *net, struct sock *sk, struct sk_buff *skb)  in sch_frag_xmit()  argument
26 	if (skb_cow_head(skb, data->l2_len) < 0) {  in sch_frag_xmit()
27 		kfree_skb(skb);  in sch_frag_xmit()
31 	__skb_dst_copy(skb, data->dst);  in sch_frag_xmit()
32 	*qdisc_skb_cb(skb) = data->cb;  in sch_frag_xmit()
33 	skb->inner_protocol = data->inner_protocol;  in sch_frag_xmit()
35 		__vlan_hwaccel_put_tag(skb, data->vlan_proto,  in sch_frag_xmit()
38 		__vlan_hwaccel_clear_tag(skb);  in sch_frag_xmit()
41 	skb_push(skb, data->l2_len);  in sch_frag_xmit()
42 	memcpy(skb->data, &data->l2_data, data->l2_len);  in sch_frag_xmit()
43 	skb_postpush_rcsum(skb, skb->data, data->l2_len);  in sch_frag_xmit()
44 	skb_reset_mac_header(skb);  in sch_frag_xmit()
46 	return data->xmit(skb);  in sch_frag_xmit()
49 static void sch_frag_prepare_frag(struct sk_buff *skb,  in sch_frag_prepare_frag()  argument
50 				  int (*xmit)(struct sk_buff *skb))  in sch_frag_prepare_frag()  argument
52 	unsigned int hlen = skb_network_offset(skb);  in sch_frag_prepare_frag()
56 	data->dst = skb->_skb_refdst;  in sch_frag_prepare_frag()
57 	data->cb = *qdisc_skb_cb(skb);  in sch_frag_prepare_frag()
59 	data->inner_protocol = skb->inner_protocol;  in sch_frag_prepare_frag()
60 	if (skb_vlan_tag_present(skb))  in sch_frag_prepare_frag()
61 		data->vlan_tci = skb_vlan_tag_get(skb) | VLAN_CFI_MASK;  in sch_frag_prepare_frag()
64 	data->vlan_proto = skb->vlan_proto;  in sch_frag_prepare_frag()
66 	memcpy(&data->l2_data, skb->data, hlen);  in sch_frag_prepare_frag()
68 	memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));  in sch_frag_prepare_frag()
69 	skb_pull(skb, hlen);  in sch_frag_prepare_frag()
83 static int sch_fragment(struct net *net, struct sk_buff *skb,  in sch_fragment()  argument
84 			u16 mru, int (*xmit)(struct sk_buff *skb))  in sch_fragment()  argument
88 	if (skb_network_offset(skb) > VLAN_ETH_HLEN) {  in sch_fragment()
93 	if (skb_protocol(skb, true) == htons(ETH_P_IP)) {  in sch_fragment()
97 		sch_frag_prepare_frag(skb, xmit);  in sch_fragment()
100 		sch_frag_rt.dst.dev = skb->dev;  in sch_fragment()
102 		orig_dst = skb->_skb_refdst;  in sch_fragment()
103 		skb_dst_set_noref(skb, &sch_frag_rt.dst);  in sch_fragment()
104 		IPCB(skb)->frag_max_size = mru;  in sch_fragment()
106 		ret = ip_do_fragment(net, skb->sk, skb, sch_frag_xmit);  in sch_fragment()
108 	} else if (skb_protocol(skb, true) == htons(ETH_P_IPV6)) {  in sch_fragment()
112 		sch_frag_prepare_frag(skb, xmit);  in sch_fragment()
116 		sch_frag_rt.dst.dev = skb->dev;  in sch_fragment()
118 		orig_dst = skb->_skb_refdst;  in sch_fragment()
119 		skb_dst_set_noref(skb, &sch_frag_rt.dst);  in sch_fragment()
120 		IP6CB(skb)->frag_max_size = mru;  in sch_fragment()
122 		ret = ipv6_stub->ipv6_fragment(net, skb->sk, skb,  in sch_fragment()
127 				     netdev_name(skb->dev),  in sch_fragment()
128 				     ntohs(skb_protocol(skb, true)), mru,  in sch_fragment()
129 				     skb->dev->mtu);  in sch_fragment()
135 	kfree_skb(skb);  in sch_fragment()
139 int sch_frag_xmit_hook(struct sk_buff *skb, int (*xmit)(struct sk_buff *skb))  in sch_frag_xmit_hook()  argument
141 	u16 mru = tc_skb_cb(skb)->mru;  in sch_frag_xmit_hook()
144 	if (mru && skb->len > mru + skb->dev->hard_header_len)  in sch_frag_xmit_hook()
145 		err = sch_fragment(dev_net(skb->dev), skb, mru, xmit);  in sch_frag_xmit_hook()
147 		err = xmit(skb);  in sch_frag_xmit_hook()