On 3/17/21 4:19 PM, ishaangandhi wrote:
> +void icmp_identify_arrival_interface(struct sk_buff *skb, struct net *net,
> int room,
> + char *icmph, int ip_version)
> +{
> + unsigned int ext_len, orig_len, word_aligned_orig_len, offset,
> extra_space_needed,
> + if_index, mtu = 0, name_len = 0, name_subobj_len = 0;
> + struct interface_ipv4_addr_sub_obj ip4_addr_subobj = {.addr = 0};
> + struct interface_ipv6_addr_sub_obj ip6_addr_subobj;
> + struct icmp_extobj_hdr *iio_hdr;
> + struct inet6_ifaddr ip6_ifaddr;
> + struct inet6_dev *dev6 = NULL;
> + struct icmp_ext_hdr *ext_hdr;
> + char *name = NULL, ctype;
> + struct net_device *dev;
> + void *subobj_offset;
> +
> + skb_linearize(skb);
> + if_index = inet_iif(skb);
inet_iif is an IPv4 helper; it should not be used for v6 skb's.
