net/ife/ife.c

2  * net/ife/ife.c - Inter-FE protocol based on ForCES WG InterFE LFB
6  * Refer to: draft-ietf-forces-interfelfb-03 and netdev01 paper:
7  * "Distributing Linux Traffic Control Classifier-Action Subsystem"
40 	int total_push = hdrm + skb->dev->hard_header_len;  in ife_encode()
50 	iethh = (struct ethhdr *) skb->data;  in ife_encode()
53 	memcpy(skb->data, iethh, skb->dev->hard_header_len);  in ife_encode()
55 	skboff += skb->dev->hard_header_len;  in ife_encode()
58 	ifehdr = (struct ifeheadr *) (skb->data + skboff);  in ife_encode()
60 	ifehdr->metalen = htons(metalen);  in ife_encode()
62 	return ifehdr->tlv_data;  in ife_encode()
72 	if (!pskb_may_pull(skb, skb->dev->hard_header_len + IFE_METAHDRLEN))  in ife_decode()
75 	ifehdr = (struct ifeheadr *) (skb->data + skb->dev->hard_header_len);  in ife_decode()
76 	ifehdrln = ntohs(ifehdr->metalen);  in ife_decode()
77 	total_pull = skb->dev->hard_header_len + ifehdrln;  in ife_decode()
85 	ifehdr = (struct ifeheadr *)(skb->data + skb->dev->hard_header_len);  in ife_decode()
88 	*metalen = ifehdrln - IFE_METAHDRLEN;  in ife_decode()
90 	return &ifehdr->tlv_data;  in ife_decode()
109 	tlvlen = ntohs(tlv->len);  in __ife_tlv_meta_valid()
125 /* Caller takes care of presenting data in network order
136 	*dlen = ntohs(tlv->len) - NLA_HDRLEN;  in ife_tlv_meta_decode()
137 	*attrtype = ntohs(tlv->type);  in ife_tlv_meta_decode()
149 	u16 tlvlen = ntohs(tlv->len);  in ife_tlv_meta_next()
157 /* Caller takes care of presenting data in network order
167 	memset(dptr, 0, totlen - NLA_HDRLEN);  in ife_tlv_meta_encode()
176 MODULE_DESCRIPTION("Inter-FE LFB action");