2 * IPv6 library code, needed by static components when full IPv6 support is
3 * not configured or static. These functions are needed by GSO/GRO implementation.
5 #include <linux/export.h>
7 #include <net/ip6_fib.h>
10 int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
12 u16 offset = sizeof(struct ipv6hdr);
13 struct ipv6_opt_hdr *exthdr =
14 (struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
15 unsigned int packet_len = skb->tail - skb->network_header;
17 *nexthdr = &ipv6_hdr(skb)->nexthdr;
19 while (offset + 1 <= packet_len) {
29 #if IS_ENABLED(CONFIG_IPV6_MIP6)
30 if (ipv6_find_tlv(skb, offset, IPV6_TLV_HAO) >= 0)
40 offset += ipv6_optlen(exthdr);
41 *nexthdr = &exthdr->nexthdr;
42 exthdr = (struct ipv6_opt_hdr *)(skb_network_header(skb) +
48 EXPORT_SYMBOL(ip6_find_1stfragopt);