xref: /OK3568_Linux_fs/kernel/net/ipv6/exthdrs_offload.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  *	IPV6 GSO/GRO offload support
4*4882a593Smuzhiyun  *	Linux INET6 implementation
5*4882a593Smuzhiyun  *
6*4882a593Smuzhiyun  *      IPV6 Extension Header GSO/GRO support
7*4882a593Smuzhiyun  */
8*4882a593Smuzhiyun #include <net/protocol.h>
9*4882a593Smuzhiyun #include "ip6_offload.h"
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun static const struct net_offload rthdr_offload = {
12*4882a593Smuzhiyun 	.flags		=	INET6_PROTO_GSO_EXTHDR,
13*4882a593Smuzhiyun };
14*4882a593Smuzhiyun 
15*4882a593Smuzhiyun static const struct net_offload dstopt_offload = {
16*4882a593Smuzhiyun 	.flags		=	INET6_PROTO_GSO_EXTHDR,
17*4882a593Smuzhiyun };
18*4882a593Smuzhiyun 
ipv6_exthdrs_offload_init(void)19*4882a593Smuzhiyun int __init ipv6_exthdrs_offload_init(void)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun 	int ret;
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun 	ret = inet6_add_offload(&rthdr_offload, IPPROTO_ROUTING);
24*4882a593Smuzhiyun 	if (ret)
25*4882a593Smuzhiyun 		goto out;
26*4882a593Smuzhiyun 
27*4882a593Smuzhiyun 	ret = inet6_add_offload(&dstopt_offload, IPPROTO_DSTOPTS);
28*4882a593Smuzhiyun 	if (ret)
29*4882a593Smuzhiyun 		goto out_rt;
30*4882a593Smuzhiyun 
31*4882a593Smuzhiyun out:
32*4882a593Smuzhiyun 	return ret;
33*4882a593Smuzhiyun 
34*4882a593Smuzhiyun out_rt:
35*4882a593Smuzhiyun 	inet6_del_offload(&rthdr_offload, IPPROTO_ROUTING);
36*4882a593Smuzhiyun 	goto out;
37*4882a593Smuzhiyun }
38