2221 	struct igmphdr *pim;  in pim_rcv_v1()  local
2225 	if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(struct iphdr)))  in pim_rcv_v1()
2228 	pim = igmp_hdr(skb);  in pim_rcv_v1()
2234 	    pim->group != PIM_V1_VERSION || pim->code != PIM_V1_REGISTER)  in pim_rcv_v1()
2237 	if (__pim_rcv(mrt, skb, sizeof(*pim))) {  in pim_rcv_v1()
2248 	struct pimreghdr *pim;  in pim_rcv()  local
2252 	if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(struct iphdr)))  in pim_rcv()
2255 	pim = (struct pimreghdr *)skb_transport_header(skb);  in pim_rcv()
2256 	if (pim->type != ((PIM_VERSION << 4) | (PIM_TYPE_REGISTER)) ||  in pim_rcv()
2257 	    (pim->flags & PIM_NULL_REGISTER) ||  in pim_rcv()
2258 	    (ip_compute_csum((void *)pim, sizeof(*pim)) != 0 &&  in pim_rcv()
2265 	if (__pim_rcv(mrt, skb, sizeof(*pim))) {  in pim_rcv()