// SPDX-License-Identifier: GPL-2.0-or-later /* * net/sched/act_meta_mark.c IFE skb->mark metadata module * * copyright Jamal Hadi Salim (2015) */ #include <linux/types.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/skbuff.h> #include <linux/rtnetlink.h> #include <linux/module.h> #include <linux/init.h> #include <net/netlink.h> #include <net/pkt_sched.h> #include <uapi/linux/tc_act/tc_ife.h> #include <net/tc_act/tc_ife.h> static int skbmark_encode(struct sk_buff *skb, void *skbdata, struct tcf_meta_info *e) { u32 ifemark = skb->mark; return ife_encode_meta_u32(ifemark, skbdata, e); } static int skbmark_decode(struct sk_buff *skb, void *data, u16 len) { u32 ifemark = *(u32 *)data; skb->mark = ntohl(ifemark); return 0; } static int skbmark_check(struct sk_buff *skb, struct tcf_meta_info *e) { return ife_check_meta_u32(skb->mark, e); } static struct tcf_meta_ops ife_skbmark_ops = { .metaid = IFE_META_SKBMARK, .metatype = NLA_U32, .name = "skbmark", .synopsis = "skb mark 32 bit metadata", .check_presence = skbmark_check, .encode = skbmark_encode, .decode = skbmark_decode, .get = ife_get_meta_u32, .alloc = ife_alloc_meta_u32, .release = ife_release_meta_gen, .validate = ife_validate_meta_u32, .owner = THIS_MODULE, }; static int __init ifemark_init_module(void) { return register_ife_op(&ife_skbmark_ops); } static void __exit ifemark_cleanup_module(void) { unregister_ife_op(&ife_skbmark_ops); } module_init(ifemark_init_module); module_exit(ifemark_cleanup_module); MODULE_AUTHOR("Jamal Hadi Salim(2015)"); MODULE_DESCRIPTION("Inter-FE skb mark metadata module"); MODULE_LICENSE("GPL"); MODULE_ALIAS_IFE_META("skbmark");