/* * net/sched/act_meta_tc_index.c IFE skb->tc_index metadata module * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * copyright Jamal Hadi Salim (2016) * */ #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 skbtcindex_encode(struct sk_buff *skb, void *skbdata, struct tcf_meta_info *e) { u32 ifetc_index = skb->tc_index; return ife_encode_meta_u16(ifetc_index, skbdata, e); } static int skbtcindex_decode(struct sk_buff *skb, void *data, u16 len) { u16 ifetc_index = *(u16 *)data; skb->tc_index = ntohs(ifetc_index); return 0; } static int skbtcindex_check(struct sk_buff *skb, struct tcf_meta_info *e) { return ife_check_meta_u16(skb->tc_index, e); } static struct tcf_meta_ops ife_skbtcindex_ops = { .metaid = IFE_META_TCINDEX, .metatype = NLA_U16, .name = "tc_index", .synopsis = "skb tc_index 16 bit metadata", .check_presence = skbtcindex_check, .encode = skbtcindex_encode, .decode = skbtcindex_decode, .get = ife_get_meta_u16, .alloc = ife_alloc_meta_u16, .release = ife_release_meta_gen, .validate = ife_validate_meta_u16, .owner = THIS_MODULE, }; static int __init ifetc_index_init_module(void) { return register_ife_op(&ife_skbtcindex_ops); } static void __exit ifetc_index_cleanup_module(void) { unregister_ife_op(&ife_skbtcindex_ops); } module_init(ifetc_index_init_module); module_exit(ifetc_index_cleanup_module); MODULE_AUTHOR("Jamal Hadi Salim(2016)"); MODULE_DESCRIPTION("Inter-FE skb tc_index metadata module"); MODULE_LICENSE("GPL"); MODULE_ALIAS_IFE_META("tcindex");