projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 200e10f4 JHS |
1 | /* |
| 2 | * net/sched/act_meta_prio.c IFE skb->priority 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 (2015) | |
| 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> | |
| 25 | ||
| 26 | static int skbprio_check(struct sk_buff *skb, struct tcf_meta_info *e) | |
| 27 | { | |
| 28 | return ife_check_meta_u32(skb->priority, e); | |
| 29 | } | |
| 30 | ||
| 31 | static int skbprio_encode(struct sk_buff *skb, void *skbdata, | |
| 32 | struct tcf_meta_info *e) | |
| 33 | { | |
| 34 | u32 ifeprio = skb->priority; /* avoid having to cast skb->priority*/ | |
| 35 | ||
| 36 | return ife_encode_meta_u32(ifeprio, skbdata, e); | |
| 37 | } | |
| 38 | ||
| 39 | static int skbprio_decode(struct sk_buff *skb, void *data, u16 len) | |
| 40 | { | |
| 41 | u32 ifeprio = *(u32 *)data; | |
| 42 | ||
| 43 | skb->priority = ntohl(ifeprio); | |
| 44 | return 0; | |
| 45 | } | |
| 46 | ||
| 47 | static struct tcf_meta_ops ife_prio_ops = { | |
| 48 | .metaid = IFE_META_PRIO, | |
| 49 | .metatype = NLA_U32, | |
| 50 | .name = "skbprio", | |
| 51 | .synopsis = "skb prio metadata", | |
| 52 | .check_presence = skbprio_check, | |
| 53 | .encode = skbprio_encode, | |
| 54 | .decode = skbprio_decode, | |
| 55 | .get = ife_get_meta_u32, | |
| 56 | .alloc = ife_alloc_meta_u32, | |
| 57 | .owner = THIS_MODULE, | |
| 58 | }; | |
| 59 | ||
| 60 | static int __init ifeprio_init_module(void) | |
| 61 | { | |
| 62 | return register_ife_op(&ife_prio_ops); | |
| 63 | } | |
| 64 | ||
| 65 | static void __exit ifeprio_cleanup_module(void) | |
| 66 | { | |
| 67 | unregister_ife_op(&ife_prio_ops); | |
| 68 | } | |
| 69 | ||
| 70 | module_init(ifeprio_init_module); | |
| 71 | module_exit(ifeprio_cleanup_module); | |
| 72 | ||
| 73 | MODULE_AUTHOR("Jamal Hadi Salim(2015)"); | |
| 74 | MODULE_DESCRIPTION("Inter-FE skb prio metadata action"); | |
| 75 | MODULE_LICENSE("GPL"); | |
| 76 | MODULE_ALIAS_IFE_META(IFE_META_PRIO); |