Release 4.11 net/sched/act_ife.c
/*
* net/sched/ife.c Inter-FE action based on ForCES WG InterFE LFB
*
* Refer to:
* draft-ietf-forces-interfelfb-03
* and
* netdev01 paper:
* "Distributing Linux Traffic Control Classifier-Action
* Subsystem"
* Authors: Jamal Hadi Salim and Damascene M. Joachimpillai
*
* 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 (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/net_namespace.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>
#include <linux/etherdevice.h>
#include <net/ife.h>
#define IFE_TAB_MASK 15
static unsigned int ife_net_id;
static int max_metacnt = IFE_META_MAX + 1;
static struct tc_action_ops act_ife_ops;
static const struct nla_policy ife_policy[TCA_IFE_MAX + 1] = {
[TCA_IFE_PARMS] = { .len = sizeof(struct tc_ife)},
[TCA_IFE_DMAC] = { .len = ETH_ALEN},
[TCA_IFE_SMAC] = { .len = ETH_ALEN},
[TCA_IFE_TYPE] = { .type = NLA_U16},
};
int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi)
{
u16 edata = 0;
if (mi->metaval)
edata = *(u16 *)mi->metaval;
else if (metaval)
edata = metaval;
if (!edata) /* will not encode */
return 0;
edata = htons(edata);
return ife_tlv_meta_encode(skbdata, mi->metaid, 2, &edata);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 79 | 100.00% | 1 | 100.00% |
| Total | 79 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(ife_encode_meta_u16);
int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi)
{
if (mi->metaval)
return nla_put_u32(skb, mi->metaid, *(u32 *)mi->metaval);
else
return nla_put(skb, mi->metaid, 0, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 55 | 100.00% | 1 | 100.00% |
| Total | 55 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(ife_get_meta_u32);
int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi)
{
if (metaval || mi->metaval)
return 8; /* T+L+V == 2+2+4 */
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 28 | 100.00% | 1 | 100.00% |
| Total | 28 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(ife_check_meta_u32);
int ife_check_meta_u16(u16 metaval, struct tcf_meta_info *mi)
{
if (metaval || mi->metaval)
return 8; /* T+L+(V) == 2+2+(2+2bytepad) */
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 28 | 100.00% | 1 | 100.00% |
| Total | 28 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(ife_check_meta_u16);
int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi)
{
u32 edata = metaval;
if (mi->metaval)
edata = *(u32 *)mi->metaval;
else if (metaval)
edata = metaval;
if (!edata) /* will not encode */
return 0;
edata = htonl(edata);
return ife_tlv_meta_encode(skbdata, mi->metaid, 4, &edata);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 79 | 100.00% | 1 | 100.00% |
| Total | 79 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(ife_encode_meta_u32);
int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi)
{
if (mi->metaval)
return nla_put_u16(skb, mi->metaid, *(u16 *)mi->metaval);
else
return nla_put(skb, mi->metaid, 0, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 55 | 100.00% | 1 | 100.00% |
| Total | 55 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(ife_get_meta_u16);
int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp)
{
mi->metaval = kmemdup(metaval, sizeof(u32), gfp);
if (!mi->metaval)
return -ENOMEM;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 43 | 91.49% | 1 | 50.00% |
| Américo Wang | 4 | 8.51% | 1 | 50.00% |
| Total | 47 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(ife_alloc_meta_u32);
int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp)
{
mi->metaval = kmemdup(metaval, sizeof(u16), gfp);
if (!mi->metaval)
return -ENOMEM;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 43 | 91.49% | 1 | 50.00% |
| Américo Wang | 4 | 8.51% | 1 | 50.00% |
| Total | 47 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(ife_alloc_meta_u16);
void ife_release_meta_gen(struct tcf_meta_info *mi)
{
kfree(mi->metaval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(ife_release_meta_gen);
int ife_validate_meta_u32(void *val, int len)
{
if (len == sizeof(u32))
return 0;
return -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 28 | 100.00% | 2 | 100.00% |
| Total | 28 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(ife_validate_meta_u32);
int ife_validate_meta_u16(void *val, int len)
{
/* length will not include padding */
if (len == sizeof(u16))
return 0;
return -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 29 | 100.00% | 2 | 100.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(ife_validate_meta_u16);
static LIST_HEAD(ifeoplist);
static DEFINE_RWLOCK(ife_mod_lock);
static struct tcf_meta_ops *find_ife_oplist(u16 metaid)
{
struct tcf_meta_ops *o;
read_lock(&ife_mod_lock);
list_for_each_entry(o, &ifeoplist, list) {
if (o->metaid == metaid) {
if (!try_module_get(o->owner))
o = NULL;
read_unlock(&ife_mod_lock);
return o;
}
}
read_unlock(&ife_mod_lock);
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 74 | 100.00% | 1 | 100.00% |
| Total | 74 | 100.00% | 1 | 100.00% |
int register_ife_op(struct tcf_meta_ops *mops)
{
struct tcf_meta_ops *m;
if (!mops->metaid || !mops->metatype || !mops->name ||
!mops->check_presence || !mops->encode || !mops->decode ||
!mops->get || !mops->alloc)
return -EINVAL;
write_lock(&ife_mod_lock);
list_for_each_entry(m, &ifeoplist, list) {
if (m->metaid == mops->metaid ||
(strcmp(mops->name, m->name) == 0)) {
write_unlock(&ife_mod_lock);
return -EEXIST;
}
}
if (!mops->release)
mops->release = ife_release_meta_gen;
list_add_tail(&mops->list, &ifeoplist);
write_unlock(&ife_mod_lock);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 147 | 100.00% | 1 | 100.00% |
| Total | 147 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(unregister_ife_op);
int unregister_ife_op(struct tcf_meta_ops *mops)
{
struct tcf_meta_ops *m;
int err = -ENOENT;
write_lock(&ife_mod_lock);
list_for_each_entry(m, &ifeoplist, list) {
if (m->metaid == mops->metaid) {
list_del(&mops->list);
err = 0;
break;
}
}
write_unlock(&ife_mod_lock);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 71 | 100.00% | 1 | 100.00% |
| Total | 71 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(register_ife_op);
static int ife_validate_metatype(struct tcf_meta_ops *ops, void *val, int len)
{
int ret = 0;
/* XXX: unfortunately cant use nla_policy at this point
* because a length of 0 is valid in the case of
* "allow". "use" semantics do enforce for proper
* length and i couldve use nla_policy but it makes it hard
* to use it just for that..
*/
if (ops->validate)
return ops->validate(val, len);
if (ops->metatype == NLA_U32)
ret = ife_validate_meta_u32(val, len);
else if (ops->metatype == NLA_U16)
ret = ife_validate_meta_u16(val, len);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 78 | 100.00% | 1 | 100.00% |
| Total | 78 | 100.00% | 1 | 100.00% |
/* called when adding new meta information
* under ife->tcf_lock for existing action
*/
static int load_metaops_and_vet(struct tcf_ife_info *ife, u32 metaid,
void *val, int len, bool exists)
{
struct tcf_meta_ops *ops = find_ife_oplist(metaid);
int ret = 0;
if (!ops) {
ret = -ENOENT;
#ifdef CONFIG_MODULES
if (exists)
spin_unlock_bh(&ife->tcf_lock);
rtnl_unlock();
request_module("ifemeta%u", metaid);
rtnl_lock();
if (exists)
spin_lock_bh(&ife->tcf_lock);
ops = find_ife_oplist(metaid);
#endif
}
if (ops) {
ret = 0;
if (len)
ret = ife_validate_metatype(ops, val, len);
module_put(ops->owner);
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 124 | 91.85% | 1 | 50.00% |
| Américo Wang | 11 | 8.15% | 1 | 50.00% |
| Total | 135 | 100.00% | 2 | 100.00% |
/* called when adding new meta information
* under ife->tcf_lock for existing action
*/
static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval,
int len, bool atomic)
{
struct tcf_meta_info *mi = NULL;
struct tcf_meta_ops *ops = find_ife_oplist(metaid);
int ret = 0;
if (!ops)
return -ENOENT;
mi = kzalloc(sizeof(*mi), atomic ? GFP_ATOMIC : GFP_KERNEL);
if (!mi) {
/*put back what find_ife_oplist took */
module_put(ops->owner);
return -ENOMEM;
}
mi->metaid = metaid;
mi->ops = ops;
if (len > 0) {
ret = ops->alloc(mi, metaval, atomic ? GFP_ATOMIC : GFP_KERNEL);
if (ret != 0) {
kfree(mi);
module_put(ops->owner);
return ret;
}
}
list_add_tail(&mi->metalist, &ife->metalist);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 154 | 92.22% | 1 | 33.33% |
| Américo Wang | 13 | 7.78% | 2 | 66.67% |
| Total | 167 | 100.00% | 3 | 100.00% |
static int use_all_metadata(struct tcf_ife_info *ife)
{
struct tcf_meta_ops *o;
int rc = 0;
int installed = 0;
read_lock(&ife_mod_lock);
list_for_each_entry(o, &ifeoplist, list) {
rc = add_metainfo(ife, o->metaid, NULL, 0, true);
if (rc == 0)
installed += 1;
}
read_unlock(&ife_mod_lock);
if (installed)
return 0;
else
return -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 73 | 83.91% | 1 | 33.33% |
| Américo Wang | 14 | 16.09% | 2 | 66.67% |
| Total | 87 | 100.00% | 3 | 100.00% |
static int dump_metalist(struct sk_buff *skb, struct tcf_ife_info *ife)
{
struct tcf_meta_info *e;
struct nlattr *nest;
unsigned char *b = skb_tail_pointer(skb);
int total_encoded = 0;
/*can only happen on decode */
if (list_empty(&ife->metalist))
return 0;
nest = nla_nest_start(skb, TCA_IFE_METALST);
if (!nest)
goto out_nlmsg_trim;
list_for_each_entry(e, &ife->metalist, metalist) {
if (!e->ops->get(skb, e))
total_encoded += 1;
}
if (!total_encoded)
goto out_nlmsg_trim;
nla_nest_end(skb, nest);
return 0;
out_nlmsg_trim:
nlmsg_trim(skb, b);
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 131 | 100.00% | 1 | 100.00% |
| Total | 131 | 100.00% | 1 | 100.00% |
/* under ife->tcf_lock */
static void _tcf_ife_cleanup(struct tc_action *a, int bind)
{
struct tcf_ife_info *ife = to_ife(a);
struct tcf_meta_info *e, *n;
list_for_each_entry_safe(e, n, &ife->metalist, metalist) {
module_put(e->ops->owner);
list_del(&e->metalist);
if (e->metaval) {
if (e->ops->release)
e->ops->release(e);
else
kfree(e->metaval);
}
kfree(e);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 96 | 96.97% | 1 | 50.00% |
| Américo Wang | 3 | 3.03% | 1 | 50.00% |
| Total | 99 | 100.00% | 2 | 100.00% |
static void tcf_ife_cleanup(struct tc_action *a, int bind)
{
struct tcf_ife_info *ife = to_ife(a);
spin_lock_bh(&ife->tcf_lock);
_tcf_ife_cleanup(a, bind);
spin_unlock_bh(&ife->tcf_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 44 | 93.62% | 1 | 50.00% |
| Américo Wang | 3 | 6.38% | 1 | 50.00% |
| Total | 47 | 100.00% | 2 | 100.00% |
/* under ife->tcf_lock for existing action */
static int populate_metalist(struct tcf_ife_info *ife, struct nlattr **tb,
bool exists)
{
int len = 0;
int rc = 0;
int i = 0;
void *val;
for (i = 1; i < max_metacnt; i++) {
if (tb[i]) {
val = nla_data(tb[i]);
len = nla_len(tb[i]);
rc = load_metaops_and_vet(ife, i, val, len, exists);
if (rc != 0)
return rc;
rc = add_metainfo(ife, i, val, len, exists);
if (rc)
return rc;
}
}
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 125 | 94.70% | 1 | 50.00% |
| Américo Wang | 7 | 5.30% | 1 | 50.00% |
| Total | 132 | 100.00% | 2 | 100.00% |
static int tcf_ife_init(struct net *net, struct nlattr *nla,
struct nlattr *est, struct tc_action **a,
int ovr, int bind)
{
struct tc_action_net *tn = net_generic(net, ife_net_id);
struct nlattr *tb[TCA_IFE_MAX + 1];
struct nlattr *tb2[IFE_META_MAX + 1];
struct tcf_ife_info *ife;
struct tc_ife *parm;
u16 ife_type = 0;
u8 *daddr = NULL;
u8 *saddr = NULL;
bool exists = false;
int ret = 0;
int err;
err = nla_parse_nested(tb, TCA_IFE_MAX, nla, ife_policy);
if (err < 0)
return err;
if (!tb[TCA_IFE_PARMS])
return -EINVAL;
parm = nla_data(tb[TCA_IFE_PARMS]);
exists = tcf_hash_check(tn, parm->index, a, bind);
if (exists && bind)
return 0;
if (parm->flags & IFE_ENCODE) {
/* Until we get issued the ethertype, we cant have
* a default..
**/
if (!tb[TCA_IFE_TYPE]) {
if (exists)
tcf_hash_release(*a, bind);
pr_info("You MUST pass etherype for encoding\n");
return -EINVAL;
}
}
if (!exists) {
ret = tcf_hash_create(tn, parm->index, est, a, &act_ife_ops,
bind, false);
if (ret)
return ret;
ret = ACT_P_CREATED;
} else {
tcf_hash_release(*a, bind);
if (!ovr)
return -EEXIST;
}
ife = to_ife(*a);
ife->flags = parm->flags;
if (parm->flags & IFE_ENCODE) {
ife_type = nla_get_u16(tb[TCA_IFE_TYPE]);
if (tb[TCA_IFE_DMAC])
daddr = nla_data(tb[TCA_IFE_DMAC]);
if (tb[TCA_IFE_SMAC])
saddr = nla_data(tb[TCA_IFE_SMAC]);
}
if (exists)
spin_lock_bh(&ife->tcf_lock);
ife->tcf_action = parm->action;
if (parm->flags & IFE_ENCODE) {
if (daddr)
ether_addr_copy(ife->eth_dst, daddr);
else
eth_zero_addr(ife->eth_dst);
if (saddr)
ether_addr_copy(ife->eth_src, saddr);
else
eth_zero_addr(ife->eth_src);
ife->eth_type = ife_type;
}
if (ret == ACT_P_CREATED)
INIT_LIST_HEAD(&ife->metalist);
if (tb[TCA_IFE_METALST]) {
err = nla_parse_nested(tb2, IFE_META_MAX, tb[TCA_IFE_METALST],
NULL);
if (err) {
metadata_parse_err:
if (exists)
tcf_hash_release(*a, bind);
if (ret == ACT_P_CREATED)
_tcf_ife_cleanup(*a, bind);
if (exists)
spin_unlock_bh(&ife->tcf_lock);
return err;
}
err = populate_metalist(ife, tb2, exists);
if (err)
goto metadata_parse_err;
} else {
/* if no passed metadata allow list or passed allow-all
* then here we process by adding as many supported metadatum
* as we can. You better have at least one else we are
* going to bail out
*/
err = use_all_metadata(ife);
if (err) {
if (ret == ACT_P_CREATED)
_tcf_ife_cleanup(*a, bind);
if (exists)
spin_unlock_bh(&ife->tcf_lock);
return err;
}
}
if (exists)
spin_unlock_bh(&ife->tcf_lock);
if (ret == ACT_P_CREATED)
tcf_hash_insert(tn, *a);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 571 | 94.54% | 2 | 40.00% |
| Américo Wang | 33 | 5.46% | 3 | 60.00% |
| Total | 604 | 100.00% | 5 | 100.00% |
static int tcf_ife_dump(struct sk_buff *skb, struct tc_action *a, int bind,
int ref)
{
unsigned char *b = skb_tail_pointer(skb);
struct tcf_ife_info *ife = to_ife(a);
struct tc_ife opt = {
.index = ife->tcf_index,
.refcnt = ife->tcf_refcnt - ref,
.bindcnt = ife->tcf_bindcnt - bind,
.action = ife->tcf_action,
.flags = ife->flags,
};
struct tcf_t t;
if (nla_put(skb, TCA_IFE_PARMS, sizeof(opt), &opt))
goto nla_put_failure;
tcf_tm_dump(&t, &ife->tcf_tm);
if (nla_put_64bit(skb, TCA_IFE_TM, sizeof(t), &t, TCA_IFE_PAD))
goto nla_put_failure;
if (!is_zero_ether_addr(ife->eth_dst)) {
if (nla_put(skb, TCA_IFE_DMAC, ETH_ALEN, ife->eth_dst))
goto nla_put_failure;
}
if (!is_zero_ether_addr(ife->eth_src)) {
if (nla_put(skb, TCA_IFE_SMAC, ETH_ALEN, ife->eth_src))
goto nla_put_failure;
}
if (nla_put(skb, TCA_IFE_TYPE, 2, &ife->eth_type))
goto nla_put_failure;
if (dump_metalist(skb, ife)) {
/*ignore failure to dump metalist */
pr_info("Failed to dump metalist\n");
}
return skb->len;
nla_put_failure:
nlmsg_trim(skb, b);
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 252 | 97.67% | 2 | 50.00% |
| Américo Wang | 3 | 1.16% | 1 | 25.00% |
| Nicolas Dichtel | 3 | 1.16% | 1 | 25.00% |
| Total | 258 | 100.00% | 4 | 100.00% |
int find_decode_metaid(struct sk_buff *skb, struct tcf_ife_info *ife,
u16 metaid, u16 mlen, void *mdata)
{
struct tcf_meta_info *e;
/* XXX: use hash to speed up */
list_for_each_entry(e, &ife->metalist, metalist) {
if (metaid == e->metaid) {
if (e->ops) {
/* We check for decode presence already */
return e->ops->decode(skb, mdata, mlen);
}
}
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 77 | 100.00% | 1 | 100.00% |
| Total | 77 | 100.00% | 1 | 100.00% |
static int tcf_ife_decode(struct sk_buff *skb, const struct tc_action *a,
struct tcf_result *res)
{
struct tcf_ife_info *ife = to_ife(a);
int action = ife->tcf_action;
u8 *ifehdr_end;
u8 *tlv_data;
u16 metalen;
spin_lock(&ife->tcf_lock);
bstats_update(&ife->tcf_bstats, skb);
tcf_lastuse_update(&ife->tcf_tm);
spin_unlock(&ife->tcf_lock);
if (skb_at_tc_ingress(skb))
skb_push(skb, skb->dev->hard_header_len);
tlv_data = ife_decode(skb, &metalen);
if (unlikely(!tlv_data)) {
spin_lock(&ife->tcf_lock);
ife->tcf_qstats.drops++;
spin_unlock(&ife->tcf_lock);
return TC_ACT_SHOT;
}
ifehdr_end = tlv_data + metalen;
for (; tlv_data < ifehdr_end; tlv_data = ife_tlv_meta_next(tlv_data)) {
u8 *curr_data;
u16 mtype;
u16 dlen;
curr_data = ife_tlv_meta_decode(tlv_data, &mtype, &dlen, NULL);
if (find_decode_metaid(skb, ife, mtype, dlen, curr_data)) {
/* abuse overlimits to count when we receive metadata
* but dont have an ops for it
*/
pr_info_ratelimited("Unknown metaid %d dlen %d\n",
mtype, dlen);
ife->tcf_qstats.overlimits++;
}
}
if (WARN_ON(tlv_data != ifehdr_end)) {
spin_lock(&ife->tcf_lock);
ife->tcf_qstats.drops++;
spin_unlock(&ife->tcf_lock);
return TC_ACT_SHOT;
}
skb->protocol = eth_type_trans(skb, skb->dev);
skb_reset_network_header(skb);
return action;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 174 | 60.63% | 3 | 60.00% |
| Yotam Gigi | 110 | 38.33% | 1 | 20.00% |
| Américo Wang | 3 | 1.05% | 1 | 20.00% |
| Total | 287 | 100.00% | 5 | 100.00% |
/*XXX: check if we can do this at install time instead of current
* send data path
**/
static int ife_get_sz(struct sk_buff *skb, struct tcf_ife_info *ife)
{
struct tcf_meta_info *e, *n;
int tot_run_sz = 0, run_sz = 0;
list_for_each_entry_safe(e, n, &ife->metalist, metalist) {
if (e->ops->check_presence) {
run_sz = e->ops->check_presence(skb, e);
tot_run_sz += run_sz;
}
}
return tot_run_sz;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 75 | 100.00% | 1 | 100.00% |
| Total | 75 | 100.00% | 1 | 100.00% |
static int tcf_ife_encode(struct sk_buff *skb, const struct tc_action *a,
struct tcf_result *res)
{
struct tcf_ife_info *ife = to_ife(a);
int action = ife->tcf_action;
struct ethhdr *oethh; /* outer ether header */
struct tcf_meta_info *e;
/*
OUTERHDR:TOTMETALEN:{TLVHDR:Metadatum:TLVHDR..}:ORIGDATA
where ORIGDATA = original ethernet header ...
*/
u16 metalen = ife_get_sz(skb, ife);
int hdrm = metalen + skb->dev->hard_header_len + IFE_METAHDRLEN;
unsigned int skboff = 0;
int new_len = skb->len + hdrm;
bool exceed_mtu = false;
void *ife_meta;
int err = 0;
if (!skb_at_tc_ingress(skb)) {
if (new_len > skb->dev->mtu)
exceed_mtu = true;
}
spin_lock(&ife->tcf_lock);
bstats_update(&ife->tcf_bstats, skb);
tcf_lastuse_update(&ife->tcf_tm);
if (!metalen) { /* no metadata to send */
/* abuse overlimits to count when we allow packet
* with no metadata
*/
ife->tcf_qstats.overlimits++;
spin_unlock(&ife->tcf_lock);
return action;
}
/* could be stupid policy setup or mtu config
* so lets be conservative.. */
if ((action == TC_ACT_SHOT) || exceed_mtu) {
ife->tcf_qstats.drops++;
spin_unlock(&ife->tcf_lock);
return TC_ACT_SHOT;
}
if (skb_at_tc_ingress(skb))
skb_push(skb, skb->dev->hard_header_len);
ife_meta = ife_encode(skb, metalen);
/* XXX: we dont have a clever way of telling encode to
* not repeat some of the computations that are done by
* ops->presence_check...
*/
list_for_each_entry(e, &ife->metalist, metalist) {
if (e->ops->encode) {
err = e->ops->encode(skb, (void *)(ife_meta + skboff),
e);
}
if (err < 0) {
/* too corrupt to keep around if overwritten */
ife->tcf_qstats.drops++;
spin_unlock(&ife->tcf_lock);
return TC_ACT_SHOT;
}
skboff += err;
}
oethh = (struct ethhdr *)skb->data;
if (!is_zero_ether_addr(ife->eth_src))
ether_addr_copy(oethh->h_source, ife->eth_src);
if (!is_zero_ether_addr(ife->eth_dst))
ether_addr_copy(oethh->h_dest, ife->eth_dst);
oethh->h_proto = htons(ife->eth_type);
if (skb_at_tc_ingress(skb))
skb_pull(skb, skb->dev->hard_header_len);
spin_unlock(&ife->tcf_lock);
return action;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 368 | 90.64% | 2 | 33.33% |
| Yotam Gigi | 22 | 5.42% | 2 | 33.33% |
| Willem de Bruijn | 13 | 3.20% | 1 | 16.67% |
| Américo Wang | 3 | 0.74% | 1 | 16.67% |
| Total | 406 | 100.00% | 6 | 100.00% |
static int tcf_ife_act(struct sk_buff *skb, const struct tc_action *a,
struct tcf_result *res)
{
struct tcf_ife_info *ife = to_ife(a);
if (ife->flags & IFE_ENCODE)
return tcf_ife_encode(skb, a, res);
if (!(ife->flags & IFE_ENCODE))
return tcf_ife_decode(skb, a, res);
pr_info_ratelimited("unknown failure(policy neither de/encode\n");
spin_lock(&ife->tcf_lock);
bstats_update(&ife->tcf_bstats, skb);
tcf_lastuse_update(&ife->tcf_tm);
ife->tcf_qstats.drops++;
spin_unlock(&ife->tcf_lock);
return TC_ACT_SHOT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 117 | 97.50% | 2 | 66.67% |
| Américo Wang | 3 | 2.50% | 1 | 33.33% |
| Total | 120 | 100.00% | 3 | 100.00% |
static int tcf_ife_walker(struct net *net, struct sk_buff *skb,
struct netlink_callback *cb, int type,
const struct tc_action_ops *ops)
{
struct tc_action_net *tn = net_generic(net, ife_net_id);
return tcf_generic_walker(tn, skb, cb, type, ops);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 52 | 92.86% | 1 | 50.00% |
| Américo Wang | 4 | 7.14% | 1 | 50.00% |
| Total | 56 | 100.00% | 2 | 100.00% |
static int tcf_ife_search(struct net *net, struct tc_action **a, u32 index)
{
struct tc_action_net *tn = net_generic(net, ife_net_id);
return tcf_hash_search(tn, a, index);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 41 | 97.62% | 1 | 50.00% |
| Américo Wang | 1 | 2.38% | 1 | 50.00% |
| Total | 42 | 100.00% | 2 | 100.00% |
static struct tc_action_ops act_ife_ops = {
.kind = "ife",
.type = TCA_ACT_IFE,
.owner = THIS_MODULE,
.act = tcf_ife_act,
.dump = tcf_ife_dump,
.cleanup = tcf_ife_cleanup,
.init = tcf_ife_init,
.walk = tcf_ife_walker,
.lookup = tcf_ife_search,
.size = sizeof(struct tcf_ife_info),
};
static __net_init int ife_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, ife_net_id);
return tc_action_net_init(tn, &act_ife_ops, IFE_TAB_MASK);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
static void __net_exit ife_exit_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, ife_net_id);
tc_action_net_exit(tn);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
static struct pernet_operations ife_net_ops = {
.init = ife_init_net,
.exit = ife_exit_net,
.id = &ife_net_id,
.size = sizeof(struct tc_action_net),
};
static int __init ife_init_module(void)
{
return tcf_register_action(&act_ife_ops, &ife_net_ops);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static void __exit ife_cleanup_module(void)
{
tcf_unregister_action(&act_ife_ops, &ife_net_ops);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
module_init(ife_init_module);
module_exit(ife_cleanup_module);
MODULE_AUTHOR("Jamal Hadi Salim(2015)");
MODULE_DESCRIPTION("Inter-FE LFB action");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jamal Hadi Salim | 3737 | 93.08% | 6 | 40.00% |
| Yotam Gigi | 135 | 3.36% | 2 | 13.33% |
| Américo Wang | 126 | 3.14% | 4 | 26.67% |
| Willem de Bruijn | 13 | 0.32% | 1 | 6.67% |
| Nicolas Dichtel | 3 | 0.07% | 1 | 6.67% |
| Alexey Dobriyan | 1 | 0.02% | 1 | 6.67% |
| Total | 4015 | 100.00% | 15 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.