projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 408fbc22 JHS |
1 | /* |
| 2 | * net/sched/act_meta_tc_index.c IFE skb->tc_index metadata module | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public License | |
| 6 | * as published by the Free Software Foundation; either version | |
| 7 | * 2 of the License, or (at your option) any later version. | |
| 8 | * | |
| 9 | * copyright Jamal Hadi Salim (2016) | |
| 10 | * | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/types.h> | |
| 14 | #include <linux/kernel.h> | |
| 15 | #include <linux/string.h> | |
| 16 | #include <linux/errno.h> | |
| 17 | #include <linux/skbuff.h> | |
| 18 | #include <linux/rtnetlink.h> | |
| 19 | #include <linux/module.h> | |
| 20 | #include <linux/init.h> | |
| 21 | #include <net/netlink.h> | |
| 22 | #include <net/pkt_sched.h> | |
| 23 | #include <uapi/linux/tc_act/tc_ife.h> | |
| 24 | #include <net/tc_act/tc_ife.h> | |
| 408fbc22 JHS |
25 | |
| 26 | static int skbtcindex_encode(struct sk_buff *skb, void *skbdata, | |
| 27 | struct tcf_meta_info *e) | |
| 28 | { | |
| 29 | u32 ifetc_index = skb->tc_index; | |
| 30 | ||
| 31 | return ife_encode_meta_u16(ifetc_index, skbdata, e); | |
| 32 | } | |
| 33 | ||
| 34 | static int skbtcindex_decode(struct sk_buff *skb, void *data, u16 len) | |
| 35 | { | |
| 36 | u16 ifetc_index = *(u16 *)data; | |
| 37 | ||
| 38 | skb->tc_index = ntohs(ifetc_index); | |
| 39 | return 0; | |
| 40 | } | |
| 41 | ||
| 42 | static int skbtcindex_check(struct sk_buff *skb, struct tcf_meta_info *e) | |
| 43 | { | |
| 44 | return ife_check_meta_u16(skb->tc_index, e); | |
| 45 | } | |
| 46 | ||
| 47 | static struct tcf_meta_ops ife_skbtcindex_ops = { | |
| 48 | .metaid = IFE_META_TCINDEX, | |
| 49 | .metatype = NLA_U16, | |
| 50 | .name = "tc_index", | |
| 51 | .synopsis = "skb tc_index 16 bit metadata", | |
| 52 | .check_presence = skbtcindex_check, | |
| 53 | .encode = skbtcindex_encode, | |
| 54 | .decode = skbtcindex_decode, | |
| 55 | .get = ife_get_meta_u16, | |
| 56 | .alloc = ife_alloc_meta_u16, | |
| 57 | .release = ife_release_meta_gen, | |
| 58 | .validate = ife_validate_meta_u16, | |
| 59 | .owner = THIS_MODULE, | |
| 60 | }; | |
| 61 | ||
| 62 | static int __init ifetc_index_init_module(void) | |
| 63 | { | |
| 64 | return register_ife_op(&ife_skbtcindex_ops); | |
| 65 | } | |
| 66 | ||
| 67 | static void __exit ifetc_index_cleanup_module(void) | |
| 68 | { | |
| 69 | unregister_ife_op(&ife_skbtcindex_ops); | |
| 70 | } | |
| 71 | ||
| 72 | module_init(ifetc_index_init_module); | |
| 73 | module_exit(ifetc_index_cleanup_module); | |
| 74 | ||
| 75 | MODULE_AUTHOR("Jamal Hadi Salim(2016)"); | |
| 76 | MODULE_DESCRIPTION("Inter-FE skb tc_index metadata module"); | |
| 77 | MODULE_LICENSE("GPL"); | |
| 8f047480 | 78 | MODULE_ALIAS_IFE_META("tcindex"); |