net/ipv6/exthdrs_offload.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  *  IPV6 GSO/GRO offload support
0004  *  Linux INET6 implementation
0005  *
0006  *      IPV6 Extension Header GSO/GRO support
0007  */
0008 #include <net/protocol.h>
0009 #include "ip6_offload.h"
0010
0011 static const struct net_offload rthdr_offload = {
0012     .flags      =   INET6_PROTO_GSO_EXTHDR,
0013 };
0014
0015 static const struct net_offload dstopt_offload = {
0016     .flags      =   INET6_PROTO_GSO_EXTHDR,
0017 };
0018
0019 int __init ipv6_exthdrs_offload_init(void)
0020 {
0021     int ret;
0022
0023     ret = inet6_add_offload(&rthdr_offload, IPPROTO_ROUTING);
0024     if (ret)
0025         goto out;
0026
0027     ret = inet6_add_offload(&dstopt_offload, IPPROTO_DSTOPTS);
0028     if (ret)
0029         goto out_rt;
0030
0031 out:
0032     return ret;
0033
0034 out_rt:
0035     inet6_del_offload(&rthdr_offload, IPPROTO_ROUTING);
0036     goto out;
0037 }