Release 4.15 net/sched/cls_u32.c
/*
* net/sched/cls_u32.c Ugly (or Universal) 32bit key Packet Classifier.
*
* 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.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
* The filters are packed to hash tables of key nodes
* with a set of 32bit key/mask pairs at every node.
* Nodes reference next level hash tables etc.
*
* This scheme is the best universal classifier I managed to
* invent; it is not super-fast, but it is not slow (provided you
* program it correctly), and general enough. And its relative
* speed grows as the number of rules becomes larger.
*
* It seems that it represents the best middle point between
* speed and manageability both by human and by machine.
*
* It is especially useful for link sharing combined with QoS;
* pure RSVP doesn't need such a general approach and can use
* much simpler (and faster) schemes, sort of cls_rsvp.c.
*
* JHS: We should remove the CONFIG_NET_CLS_IND from here
* eventually when the meta match extension is made available
*
* nfmark match added by Catalin(ux aka Dino) BOIE <catab at umbrella.ro>
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/percpu.h>
#include <linux/rtnetlink.h>
#include <linux/skbuff.h>
#include <linux/bitmap.h>
#include <linux/netdevice.h>
#include <linux/hash.h>
#include <net/netlink.h>
#include <net/act_api.h>
#include <net/pkt_cls.h>
#include <linux/idr.h>
struct tc_u_knode {
struct tc_u_knode __rcu *next;
u32 handle;
struct tc_u_hnode __rcu *ht_up;
struct tcf_exts exts;
#ifdef CONFIG_NET_CLS_IND
int ifindex;
#endif
u8 fshift;
struct tcf_result res;
struct tc_u_hnode __rcu *ht_down;
#ifdef CONFIG_CLS_U32_PERF
struct tc_u32_pcnt __percpu *pf;
#endif
u32 flags;
#ifdef CONFIG_CLS_U32_MARK
u32 val;
u32 mask;
u32 __percpu *pcpu_success;
#endif
struct tcf_proto *tp;
union {
struct work_struct work;
struct rcu_head rcu;
};
/* The 'sel' field MUST be the last field in structure to allow for
* tc_u32_keys allocated at end of structure.
*/
struct tc_u32_sel sel;
};
struct tc_u_hnode {
struct tc_u_hnode __rcu *next;
u32 handle;
u32 prio;
struct tc_u_common *tp_c;
int refcnt;
unsigned int divisor;
struct idr handle_idr;
struct rcu_head rcu;
/* The 'ht' field MUST be the last field in structure to allow for
* more entries allocated at end of structure.
*/
struct tc_u_knode __rcu *ht[1];
};
struct tc_u_common {
struct tc_u_hnode __rcu *hlist;
struct tcf_block *block;
int refcnt;
struct idr handle_idr;
struct hlist_node hnode;
struct rcu_head rcu;
};
static inline unsigned int u32_hash_fold(__be32 key,
const struct tc_u32_sel *sel,
u8 fshift)
{
unsigned int h = ntohl(key & sel->hmask) >> fshift;
return h;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 25 | 65.79% | 1 | 16.67% |
Jamal Hadi Salim | 5 | 13.16% | 2 | 33.33% |
Eric Dumazet | 4 | 10.53% | 1 | 16.67% |
Radu Rendec | 3 | 7.89% | 1 | 16.67% |
Al Viro | 1 | 2.63% | 1 | 16.67% |
Total | 38 | 100.00% | 6 | 100.00% |
static int u32_classify(struct sk_buff *skb, const struct tcf_proto *tp,
struct tcf_result *res)
{
struct {
struct tc_u_knode *knode;
unsigned int off;
} stack[TC_U32_MAXDEPTH];
struct tc_u_hnode *ht = rcu_dereference_bh(tp->root);
unsigned int off = skb_network_offset(skb);
struct tc_u_knode *n;
int sdepth = 0;
int off2 = 0;
int sel = 0;
#ifdef CONFIG_CLS_U32_PERF
int j;
#endif
int i, r;
next_ht:
n = rcu_dereference_bh(ht->ht[sel]);
next_knode:
if (n) {
struct tc_u32_key *key = n->sel.keys;
#ifdef CONFIG_CLS_U32_PERF
__this_cpu_inc(n->pf->rcnt);
j = 0;
#endif
if (tc_skip_sw(n->flags)) {
n = rcu_dereference_bh(n->next);
goto next_knode;
}
#ifdef CONFIG_CLS_U32_MARK
if ((skb->mark & n->mask) != n->val) {
n = rcu_dereference_bh(n->next);
goto next_knode;
} else {
__this_cpu_inc(*n->pcpu_success);
}
#endif
for (i = n->sel.nkeys; i > 0; i--, key++) {
int toff = off + key->off + (off2 & key->offmask);
__be32 *data, hdata;
if (skb_headroom(skb) + toff > INT_MAX)
goto out;
data = skb_header_pointer(skb, toff, 4, &hdata);
if (!data)
goto out;
if ((*data ^ key->val) & key->mask) {
n = rcu_dereference_bh(n->next);
goto next_knode;
}
#ifdef CONFIG_CLS_U32_PERF
__this_cpu_inc(n->pf->kcnts[j]);
j++;
#endif
}
ht = rcu_dereference_bh(n->ht_down);
if (!ht) {
check_terminal:
if (n->sel.flags & TC_U32_TERMINAL) {
*res = n->res;
#ifdef CONFIG_NET_CLS_IND
if (!tcf_match_indev(skb, n->ifindex)) {
n = rcu_dereference_bh(n->next);
goto next_knode;
}
#endif
#ifdef CONFIG_CLS_U32_PERF
__this_cpu_inc(n->pf->rhit);
#endif
r = tcf_exts_exec(skb, &n->exts, res);
if (r < 0) {
n = rcu_dereference_bh(n->next);
goto next_knode;
}
return r;
}
n = rcu_dereference_bh(n->next);
goto next_knode;
}
/* PUSH */
if (sdepth >= TC_U32_MAXDEPTH)
goto deadloop;
stack[sdepth].knode = n;
stack[sdepth].off = off;
sdepth++;
ht = rcu_dereference_bh(n->ht_down);
sel = 0;
if (ht->divisor) {
__be32 *data, hdata;
data = skb_header_pointer(skb, off + n->sel.hoff, 4,
&hdata);
if (!data)
goto out;
sel = ht->divisor & u32_hash_fold(*data, &n->sel,
n->fshift);
}
if (!(n->sel.flags & (TC_U32_VAROFFSET | TC_U32_OFFSET | TC_U32_EAT)))
goto next_ht;
if (n->sel.flags & (TC_U32_OFFSET | TC_U32_VAROFFSET)) {
off2 = n->sel.off + 3;
if (n->sel.flags & TC_U32_VAROFFSET) {
__be16 *data, hdata;
data = skb_header_pointer(skb,
off + n->sel.offoff,
2, &hdata);
if (!data)
goto out;
off2 += ntohs(n->sel.offmask & *data) >>
n->sel.offshift;
}
off2 &= ~3;
}
if (n->sel.flags & TC_U32_EAT) {
off += off2;
off2 = 0;
}
if (off < skb->len)
goto next_ht;
}
/* POP */
if (sdepth--) {
n = stack[sdepth].knode;
ht = rcu_dereference_bh(n->ht_up);
off = stack[sdepth].off;
goto check_terminal;
}
out:
return -1;
deadloop:
net_warn_ratelimited("cls_u32: dead loop\n");
return -1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 415 | 52.80% | 2 | 9.09% |
Changli Gao | 116 | 14.76% | 1 | 4.55% |
Jamal Hadi Salim | 86 | 10.94% | 3 | 13.64% |
John Fastabend | 51 | 6.49% | 2 | 9.09% |
Catalin(ux aka Dino) M. Boie | 37 | 4.71% | 1 | 4.55% |
Stephen Hemminger | 25 | 3.18% | 2 | 9.09% |
Thomas Graf | 23 | 2.93% | 3 | 13.64% |
Sridhar Samudrala | 23 | 2.93% | 1 | 4.55% |
David S. Miller | 2 | 0.25% | 1 | 4.55% |
Arnaldo Carvalho de Melo | 2 | 0.25% | 1 | 4.55% |
Dan Carpenter | 2 | 0.25% | 1 | 4.55% |
Linus Torvalds | 1 | 0.13% | 1 | 4.55% |
Joe Perches | 1 | 0.13% | 1 | 4.55% |
Eric Dumazet | 1 | 0.13% | 1 | 4.55% |
Américo Wang | 1 | 0.13% | 1 | 4.55% |
Total | 786 | 100.00% | 22 | 100.00% |
static struct tc_u_hnode *u32_lookup_ht(struct tc_u_common *tp_c, u32 handle)
{
struct tc_u_hnode *ht;
for (ht = rtnl_dereference(tp_c->hlist);
ht;
ht = rtnl_dereference(ht->next))
if (ht->handle == handle)
break;
return ht;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 33 | 60.00% | 1 | 33.33% |
Eric Dumazet | 16 | 29.09% | 1 | 33.33% |
John Fastabend | 6 | 10.91% | 1 | 33.33% |
Total | 55 | 100.00% | 3 | 100.00% |
static struct tc_u_knode *u32_lookup_key(struct tc_u_hnode *ht, u32 handle)
{
unsigned int sel;
struct tc_u_knode *n = NULL;
sel = TC_U32_HASH(handle);
if (sel > ht->divisor)
goto out;
for (n = rtnl_dereference(ht->ht[sel]);
n;
n = rtnl_dereference(n->next))
if (n->handle == handle)
break;
out:
return n;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 68 | 80.95% | 1 | 25.00% |
Arnaldo Carvalho de Melo | 8 | 9.52% | 1 | 25.00% |
John Fastabend | 6 | 7.14% | 1 | 25.00% |
Eric Dumazet | 2 | 2.38% | 1 | 25.00% |
Total | 84 | 100.00% | 4 | 100.00% |
static void *u32_get(struct tcf_proto *tp, u32 handle)
{
struct tc_u_hnode *ht;
struct tc_u_common *tp_c = tp->data;
if (TC_U32_HTID(handle) == TC_U32_ROOT)
ht = rtnl_dereference(tp->root);
else
ht = u32_lookup_ht(tp_c, TC_U32_HTID(handle));
if (!ht)
return NULL;
if (TC_U32_KEY(handle) == 0)
return ht;
return u32_lookup_key(ht, handle);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 82 | 93.18% | 1 | 33.33% |
John Fastabend | 3 | 3.41% | 1 | 33.33% |
Américo Wang | 3 | 3.41% | 1 | 33.33% |
Total | 88 | 100.00% | 3 | 100.00% |
static u32 gen_new_htid(struct tc_u_common *tp_c, struct tc_u_hnode *ptr)
{
unsigned long idr_index;
int err;
/* This is only used inside rtnl lock it is safe to increment
* without read _copy_ update semantics
*/
err = idr_alloc_ext(&tp_c->handle_idr, ptr, &idr_index,
1, 0x7FF, GFP_KERNEL);
if (err)
return 0;
return (u32)(idr_index | 0x800) << 20;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 38 | 59.38% | 1 | 50.00% |
Linus Torvalds (pre-git) | 26 | 40.62% | 1 | 50.00% |
Total | 64 | 100.00% | 2 | 100.00% |
static struct hlist_head *tc_u_common_hash;
#define U32_HASH_SHIFT 10
#define U32_HASH_SIZE (1 << U32_HASH_SHIFT)
static unsigned int tc_u_hash(const struct tcf_proto *tp)
{
return hash_ptr(tp->chain->block, U32_HASH_SHIFT);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 19 | 76.00% | 1 | 33.33% |
Jiri Pirko | 5 | 20.00% | 1 | 33.33% |
Arnd Bergmann | 1 | 4.00% | 1 | 33.33% |
Total | 25 | 100.00% | 3 | 100.00% |
static struct tc_u_common *tc_u_common_find(const struct tcf_proto *tp)
{
struct tc_u_common *tc;
unsigned int h;
h = tc_u_hash(tp);
hlist_for_each_entry(tc, &tc_u_common_hash[h], hnode) {
if (tc->block == tp->chain->block)
return tc;
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 54 | 93.10% | 1 | 50.00% |
Jiri Pirko | 4 | 6.90% | 1 | 50.00% |
Total | 58 | 100.00% | 2 | 100.00% |
static int u32_init(struct tcf_proto *tp)
{
struct tc_u_hnode *root_ht;
struct tc_u_common *tp_c;
unsigned int h;
tp_c = tc_u_common_find(tp);
root_ht = kzalloc(sizeof(*root_ht), GFP_KERNEL);
if (root_ht == NULL)
return -ENOBUFS;
root_ht->refcnt++;
root_ht->handle = tp_c ? gen_new_htid(tp_c, root_ht) : 0x80000000;
root_ht->prio = tp->prio;
idr_init(&root_ht->handle_idr);
if (tp_c == NULL) {
tp_c = kzalloc(sizeof(*tp_c), GFP_KERNEL);
if (tp_c == NULL) {
kfree(root_ht);
return -ENOBUFS;
}
tp_c->block = tp->chain->block;
INIT_HLIST_NODE(&tp_c->hnode);
idr_init(&tp_c->handle_idr);
h = tc_u_hash(tp);
hlist_add_head(&tp_c->hnode, &tc_u_common_hash[h]);
}
tp_c->refcnt++;
RCU_INIT_POINTER(root_ht->next, tp_c->hlist);
rcu_assign_pointer(tp_c->hlist, root_ht);
root_ht->tp_c = tp_c;
rcu_assign_pointer(tp->root, root_ht);
tp->data = tp_c;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 147 | 65.33% | 1 | 12.50% |
Américo Wang | 50 | 22.22% | 2 | 25.00% |
John Fastabend | 12 | 5.33% | 1 | 12.50% |
Patrick McHardy | 8 | 3.56% | 1 | 12.50% |
Jiri Pirko | 4 | 1.78% | 1 | 12.50% |
Panagiotis Issaris | 2 | 0.89% | 1 | 12.50% |
David S. Miller | 2 | 0.89% | 1 | 12.50% |
Total | 225 | 100.00% | 8 | 100.00% |
static int u32_destroy_key(struct tcf_proto *tp, struct tc_u_knode *n,
bool free_pf)
{
tcf_exts_destroy(&n->exts);
tcf_exts_put_net(&n->exts);
if (n->ht_down)
n->ht_down->refcnt--;
#ifdef CONFIG_CLS_U32_PERF
if (free_pf)
free_percpu(n->pf);
#endif
#ifdef CONFIG_CLS_U32_MARK
if (free_pf)
free_percpu(n->pcpu_success);
#endif
kfree(n);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 41 | 46.59% | 1 | 12.50% |
John Fastabend | 24 | 27.27% | 3 | 37.50% |
Jamal Hadi Salim | 12 | 13.64% | 2 | 25.00% |
Américo Wang | 8 | 9.09% | 1 | 12.50% |
Thomas Graf | 3 | 3.41% | 1 | 12.50% |
Total | 88 | 100.00% | 8 | 100.00% |
/* u32_delete_key_rcu should be called when free'ing a copied
* version of a tc_u_knode obtained from u32_init_knode(). When
* copies are obtained from u32_init_knode() the statistics are
* shared between the old and new copies to allow readers to
* continue to update the statistics during the copy. To support
* this the u32_delete_key_rcu variant does not free the percpu
* statistics.
*/
static void u32_delete_key_work(struct work_struct *work)
{
struct tc_u_knode *key = container_of(work, struct tc_u_knode, work);
rtnl_lock();
u32_destroy_key(key->tp, key, false);
rtnl_unlock();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 43 | 100.00% | 1 | 100.00% |
Total | 43 | 100.00% | 1 | 100.00% |
static void u32_delete_key_rcu(struct rcu_head *rcu)
{
struct tc_u_knode *key = container_of(rcu, struct tc_u_knode, rcu);
INIT_WORK(&key->work, u32_delete_key_work);
tcf_queue_work(&key->work);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
John Fastabend | 33 | 75.00% | 2 | 66.67% |
Américo Wang | 11 | 25.00% | 1 | 33.33% |
Total | 44 | 100.00% | 3 | 100.00% |
/* u32_delete_key_freepf_rcu is the rcu callback variant
* that free's the entire structure including the statistics
* percpu variables. Only use this if the key is not a copy
* returned by u32_init_knode(). See u32_delete_key_rcu()
* for the variant that should be used with keys return from
* u32_init_knode()
*/
static void u32_delete_key_freepf_work(struct work_struct *work)
{
struct tc_u_knode *key = container_of(work, struct tc_u_knode, work);
rtnl_lock();
u32_destroy_key(key->tp, key, true);
rtnl_unlock();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 43 | 100.00% | 1 | 100.00% |
Total | 43 | 100.00% | 1 | 100.00% |
static void u32_delete_key_freepf_rcu(struct rcu_head *rcu)
{
struct tc_u_knode *key = container_of(rcu, struct tc_u_knode, rcu);
INIT_WORK(&key->work, u32_delete_key_freepf_work);
tcf_queue_work(&key->work);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
John Fastabend | 33 | 75.00% | 2 | 66.67% |
Américo Wang | 11 | 25.00% | 1 | 33.33% |
Total | 44 | 100.00% | 3 | 100.00% |
static int u32_delete_key(struct tcf_proto *tp, struct tc_u_knode *key)
{
struct tc_u_knode __rcu **kp;
struct tc_u_knode *pkp;
struct tc_u_hnode *ht = rtnl_dereference(key->ht_up);
if (ht) {
kp = &ht->ht[TC_U32_HASH(key->handle)];
for (pkp = rtnl_dereference(*kp); pkp;
kp = &pkp->next, pkp = rtnl_dereference(*kp)) {
if (pkp == key) {
RCU_INIT_POINTER(*kp, key->next);
tcf_unbind_filter(tp, &key->res);
tcf_exts_get_net(&key->exts);
call_rcu(&key->rcu, u32_delete_key_freepf_rcu);
return 0;
}
}
}
WARN_ON(1);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 90 | 61.22% | 3 | 33.33% |
John Fastabend | 37 | 25.17% | 3 | 33.33% |
Américo Wang | 18 | 12.24% | 2 | 22.22% |
Ilpo Järvinen | 2 | 1.36% | 1 | 11.11% |
Total | 147 | 100.00% | 9 | 100.00% |
static void u32_clear_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h)
{
struct tcf_block *block = tp->chain->block;
struct tc_cls_u32_offload cls_u32 = {};
tc_cls_common_offload_init(&cls_u32.common, tp);
cls_u32.command = TC_CLSU32_DELETE_HNODE;
cls_u32.hnode.divisor = h->divisor;
cls_u32.hnode.handle = h->handle;
cls_u32.hnode.prio = h->prio;
tc_setup_cb_call(block, NULL, TC_SETUP_CLSU32, &cls_u32, false);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 68 | 73.12% | 4 | 80.00% |
John Fastabend | 25 | 26.88% | 1 | 20.00% |
Total | 93 | 100.00% | 5 | 100.00% |
static int u32_replace_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h,
u32 flags)
{
struct tcf_block *block = tp->chain->block;
struct tc_cls_u32_offload cls_u32 = {};
bool skip_sw = tc_skip_sw(flags);
bool offloaded = false;
int err;
tc_cls_common_offload_init(&cls_u32.common, tp);
cls_u32.command = TC_CLSU32_NEW_HNODE;
cls_u32.hnode.divisor = h->divisor;
cls_u32.hnode.handle = h->handle;
cls_u32.hnode.prio = h->prio;
err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSU32, &cls_u32, skip_sw);
if (err < 0) {
u32_clear_hw_hnode(tp, h);
return err;
} else if (err > 0) {
offloaded = true;
}
if (skip_sw && !offloaded)
return -EINVAL;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 91 | 57.23% | 3 | 42.86% |
John Fastabend | 54 | 33.96% | 2 | 28.57% |
Sridhar Samudrala | 10 | 6.29% | 1 | 14.29% |
Jakub Kiciński | 4 | 2.52% | 1 | 14.29% |
Total | 159 | 100.00% | 7 | 100.00% |
static void u32_remove_hw_knode(struct tcf_proto *tp, u32 handle)
{
struct tcf_block *block = tp->chain->block;
struct tc_cls_u32_offload cls_u32 = {};
tc_cls_common_offload_init(&cls_u32.common, tp);
cls_u32.command = TC_CLSU32_DELETE_KNODE;
cls_u32.knode.handle = handle;
tc_setup_cb_call(block, NULL, TC_SETUP_CLSU32, &cls_u32, false);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 44 | 63.77% | 4 | 80.00% |
John Fastabend | 25 | 36.23% | 1 | 20.00% |
Total | 69 | 100.00% | 5 | 100.00% |
static int u32_replace_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n,
u32 flags)
{
struct tcf_block *block = tp->chain->block;
struct tc_cls_u32_offload cls_u32 = {};
bool skip_sw = tc_skip_sw(flags);
int err;
tc_cls_common_offload_init(&cls_u32.common, tp);
cls_u32.command = TC_CLSU32_REPLACE_KNODE;
cls_u32.knode.handle = n->handle;
cls_u32.knode.fshift = n->fshift;
#ifdef CONFIG_CLS_U32_MARK
cls_u32.knode.val = n->val;
cls_u32.knode.mask = n->mask;
#else
cls_u32.knode.val = 0;
cls_u32.knode.mask = 0;
#endif
cls_u32.knode.sel = &n->sel;
cls_u32.knode.exts = &n->exts;
if (n->ht_down)
cls_u32.knode.link_handle = n->ht_down->handle;
err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSU32, &cls_u32, skip_sw);
if (err < 0) {
u32_remove_hw_knode(tp, n->handle);
return err;
} else if (err > 0) {
n->flags |= TCA_CLS_FLAGS_IN_HW;
}
if (skip_sw && !(n->flags & TCA_CLS_FLAGS_IN_HW))
return -EINVAL;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
John Fastabend | 121 | 51.05% | 2 | 22.22% |
Jiri Pirko | 100 | 42.19% | 3 | 33.33% |
Sridhar Samudrala | 9 | 3.80% | 1 | 11.11% |
Jakub Kiciński | 4 | 1.69% | 1 | 11.11% |
Or Gerlitz | 2 | 0.84% | 1 | 11.11% |
Colin Ian King | 1 | 0.42% | 1 | 11.11% |
Total | 237 | 100.00% | 9 | 100.00% |
static void u32_clear_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
{
struct tc_u_knode *n;
unsigned int h;
for (h = 0; h <= ht->divisor; h++) {
while ((n = rtnl_dereference(ht->ht[h])) != NULL) {
RCU_INIT_POINTER(ht->ht[h],
rtnl_dereference(n->next));
tcf_unbind_filter(tp, &n->res);
u32_remove_hw_knode(tp, n->handle);
idr_remove_ext(&ht->handle_idr, n->handle);
if (tcf_exts_get_net(&n->exts))
call_rcu(&n->rcu, u32_delete_key_freepf_rcu);
else
u32_destroy_key(n->tp, n, true);
}
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 67 | 47.18% | 1 | 12.50% |
Américo Wang | 49 | 34.51% | 3 | 37.50% |
John Fastabend | 25 | 17.61% | 3 | 37.50% |
Eric Dumazet | 1 | 0.70% | 1 | 12.50% |
Total | 142 | 100.00% | 8 | 100.00% |
static int u32_destroy_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
{
struct tc_u_common *tp_c = tp->data;
struct tc_u_hnode __rcu **hn;
struct tc_u_hnode *phn;
WARN_ON(ht->refcnt);
u32_clear_hnode(tp, ht);
hn = &tp_c->hlist;
for (phn = rtnl_dereference(*hn);
phn;
hn = &phn->next, phn = rtnl_dereference(*hn)) {
if (phn == ht) {
u32_clear_hw_hnode(tp, ht);
idr_destroy(&ht->handle_idr);
idr_remove_ext(&tp_c->handle_idr, ht->handle);
RCU_INIT_POINTER(*hn, ht->next);
kfree_rcu(ht, rcu);
return 0;
}
}
return -ENOENT;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 83 | 56.85% | 1 | 16.67% |
John Fastabend | 40 | 27.40% | 2 | 33.33% |
Américo Wang | 22 | 15.07% | 2 | 33.33% |
Ilpo Järvinen | 1 | 0.68% | 1 | 16.67% |
Total | 146 | 100.00% | 6 | 100.00% |
static bool ht_empty(struct tc_u_hnode *ht)
{
unsigned int h;
for (h = 0; h <= ht->divisor; h++)
if (rcu_access_pointer(ht->ht[h]))
return false;
return true;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Cong Wang | 48 | 100.00% | 1 | 100.00% |
Total | 48 | 100.00% | 1 | 100.00% |
static void u32_destroy(struct tcf_proto *tp)
{
struct tc_u_common *tp_c = tp->data;
struct tc_u_hnode *root_ht = rtnl_dereference(tp->root);
WARN_ON(root_ht == NULL);
if (root_ht && --root_ht->refcnt == 0)
u32_destroy_hnode(tp, root_ht);
if (--tp_c->refcnt == 0) {
struct tc_u_hnode *ht;
hlist_del(&tp_c->hnode);
for (ht = rtnl_dereference(tp_c->hlist);
ht;
ht = rtnl_dereference(ht->next)) {
ht->refcnt--;
u32_clear_hnode(tp, ht);
}
while ((ht = rtnl_dereference(tp_c->hlist)) != NULL) {
RCU_INIT_POINTER(tp_c->hlist, ht->next);
kfree_rcu(ht, rcu);
}
idr_destroy(&tp_c->handle_idr);
kfree(tp_c);
}
tp->data = NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 127 | 74.27% | 1 | 12.50% |
John Fastabend | 18 | 10.53% | 1 | 12.50% |
Américo Wang | 17 | 9.94% | 4 | 50.00% |
Jarek Poplawski | 7 | 4.09% | 1 | 12.50% |
Ilpo Järvinen | 2 | 1.17% | 1 | 12.50% |
Total | 171 | 100.00% | 8 | 100.00% |
static int u32_delete(struct tcf_proto *tp, void *arg, bool *last)
{
struct tc_u_hnode *ht = arg;
struct tc_u_hnode *root_ht = rtnl_dereference(tp->root);
struct tc_u_common *tp_c = tp->data;
int ret = 0;
if (ht == NULL)
goto out;
if (TC_U32_KEY(ht->handle)) {
u32_remove_hw_knode(tp, ht->handle);
ret = u32_delete_key(tp, (struct tc_u_knode *)ht);
goto out;
}
if (root_ht == ht)
return -EINVAL;
if (ht->refcnt == 1) {
ht->refcnt--;
u32_destroy_hnode(tp, ht);
} else {
return -EBUSY;
}
out:
*last = true;
if (root_ht) {
if (root_ht->refcnt > 1) {
*last = false;
goto ret;
}
if (root_ht->refcnt == 1) {
if (!ht_empty(root_ht)) {
*last = false;
goto ret;
}
}
}
if (tp_c->refcnt > 1) {
*last = false;
goto ret;
}
if (tp_c->refcnt == 1) {
struct tc_u_hnode *ht;
for (ht = rtnl_dereference(tp_c->hlist);
ht;
ht = rtnl_dereference(ht->next))
if (!ht_empty(ht)) {
*last = false;
break;
}
}
ret:
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 162 | 59.56% | 2 | 33.33% |
Linus Torvalds (pre-git) | 71 | 26.10% | 1 | 16.67% |
John Fastabend | 24 | 8.82% | 2 | 33.33% |
Jarek Poplawski | 15 | 5.51% | 1 | 16.67% |
Total | 272 | 100.00% | 6 | 100.00% |
static u32 gen_new_kid(struct tc_u_hnode *ht, u32 htid)
{
unsigned long idr_index;
u32 start = htid | 0x800;
u32 max = htid | 0xFFF;
u32 min = htid;
if (idr_alloc_ext(&ht->handle_idr, NULL, &idr_index,
start, max + 1, GFP_KERNEL)) {
if (idr_alloc_ext(&ht->handle_idr, NULL, &idr_index,
min + 1, max + 1, GFP_KERNEL))
return max;
}
return (u32)idr_index;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 58 | 60.42% | 1 | 25.00% |
Linus Torvalds (pre-git) | 23 | 23.96% | 1 | 25.00% |
Cong Wang | 14 | 14.58% | 1 | 25.00% |
John Fastabend | 1 | 1.04% | 1 | 25.00% |
Total | 96 | 100.00% | 4 | 100.00% |
static const struct nla_policy u32_policy[TCA_U32_MAX + 1] = {
[TCA_U32_CLASSID] = { .type = NLA_U32 },
[TCA_U32_HASH] = { .type = NLA_U32 },
[TCA_U32_LINK] = { .type = NLA_U32 },
[TCA_U32_DIVISOR] = { .type = NLA_U32 },
[TCA_U32_SEL] = { .len = sizeof(struct tc_u32_sel) },
[TCA_U32_INDEV] = { .type = NLA_STRING, .len = IFNAMSIZ },
[TCA_U32_MARK] = { .len = sizeof(struct tc_u32_mark) },
[TCA_U32_FLAGS] = { .type = NLA_U32 },
};
static int u32_set_parms(struct net *net, struct tcf_proto *tp,
unsigned long base, struct tc_u_hnode *ht,
struct tc_u_knode *n, struct nlattr **tb,
struct nlattr *est, bool ovr)
{
int err;
err = tcf_exts_validate(net, tp, tb, est, &n->exts, ovr);
if (err < 0)
return err;
if (tb[TCA_U32_LINK]) {
u32 handle = nla_get_u32(tb[TCA_U32_LINK]);
struct tc_u_hnode *ht_down = NULL, *ht_old;
if (TC_U32_KEY(handle))
return -EINVAL;
if (handle) {
ht_down = u32_lookup_ht(ht->tp_c, handle);
if (ht_down == NULL)
return -EINVAL;
ht_down->refcnt++;
}
ht_old = rtnl_dereference(n->ht_down);
rcu_assign_pointer(n->ht_down, ht_down);
if (ht_old)
ht_old->refcnt--;
}
if (tb[TCA_U32_CLASSID]) {
n->res.classid = nla_get_u32(tb[TCA_U32_CLASSID]);
tcf_bind_filter(tp, &n->res, base);
}
#ifdef CONFIG_NET_CLS_IND
if (tb[TCA_U32_INDEV]) {
int ret;
ret = tcf_change_indev(net, tb[TCA_U32_INDEV]);
if (ret < 0)
return -EINVAL;
n->ifindex = ret;
}
#endif
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 150 | 57.92% | 3 | 18.75% |
Thomas Graf | 33 | 12.74% | 2 | 12.50% |
Jiri Pirko | 17 | 6.56% | 1 | 6.25% |
Américo Wang | 17 | 6.56% | 2 | 12.50% |
Patrick McHardy | 14 | 5.41% | 3 | 18.75% |
Jamal Hadi Salim | 8 | 3.09% | 1 | 6.25% |
Benjamin LaHaise | 7 | 2.70% | 1 | 6.25% |
John Fastabend | 6 | 2.32% | 1 | 6.25% |
Cong Wang | 5 | 1.93% | 1 | 6.25% |
Stephen Hemminger | 2 | 0.77% | 1 | 6.25% |
Total | 259 | 100.00% | 16 | 100.00% |
static void u32_replace_knode(struct tcf_proto *tp, struct tc_u_common *tp_c,
struct tc_u_knode *n)
{
struct tc_u_knode __rcu **ins;
struct tc_u_knode *pins;
struct tc_u_hnode *ht;
if (TC_U32_HTID(n->handle) == TC_U32_ROOT)
ht = rtnl_dereference(tp->root);
else
ht = u32_lookup_ht(tp_c, TC_U32_HTID(n->handle));
ins = &ht->ht[TC_U32_HASH(n->handle)];
/* The node must always exist for it to be replaced if this is not the
* case then something went very wrong elsewhere.
*/
for (pins = rtnl_dereference(*ins); ;
ins = &pins->next, pins = rtnl_dereference(*ins))
if (pins->handle == n->handle)
break;
idr_replace_ext(&ht->handle_idr, n, n->handle);
RCU_INIT_POINTER(n->next, pins->next);
rcu_assign_pointer(*ins, n);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
John Fastabend | 145 | 91.19% | 1 | 50.00% |
Américo Wang | 14 | 8.81% | 1 | 50.00% |
Total | 159 | 100.00% | 2 | 100.00% |
static struct tc_u_knode *u32_init_knode(struct tcf_proto *tp,
struct tc_u_knode *n)
{
struct tc_u_knode *new;
struct tc_u32_sel *s = &n->sel;
new = kzalloc(sizeof(*n) + s->nkeys*sizeof(struct tc_u32_key),
GFP_KERNEL);
if (!new)
return NULL;
RCU_INIT_POINTER(new->next, n->next);
new->handle = n->handle;
RCU_INIT_POINTER(new->ht_up, n->ht_up);
#ifdef CONFIG_NET_CLS_IND
new->ifindex = n->ifindex;
#endif
new->fshift = n->fshift;
new->res = n->res;
new->flags = n->flags;
RCU_INIT_POINTER(new->ht_down, n->ht_down);
/* bump reference count as long as we hold pointer to structure */
if (new->ht_down)
new->ht_down->refcnt++;
#ifdef CONFIG_CLS_U32_PERF
/* Statistics may be incremented by readers during update
* so we must keep them in tact. When the node is later destroyed
* a special destroy call must be made to not free the pf memory.
*/
new->pf = n->pf;
#endif
#ifdef CONFIG_CLS_U32_MARK
new->val = n->val;
new->mask = n->mask;
/* Similarly success statistics must be moved as pointers */
new->pcpu_success = n->pcpu_success;
#endif
new->tp = tp;
memcpy(&new->sel, s, sizeof(*s) + s->nkeys*sizeof(struct tc_u32_key));
if (tcf_exts_init(&new->exts, TCA_U32_ACT, TCA_U32_POLICE)) {
kfree(new);
return NULL;
}
return new;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
John Fastabend | 247 | 95.37% | 2 | 66.67% |
Américo Wang | 12 | 4.63% | 1 | 33.33% |
Total | 259 | 100.00% | 3 | 100.00% |
static int u32_change(struct net *net, struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base, u32 handle,
struct nlattr **tca, void **arg, bool ovr)
{
struct tc_u_common *tp_c = tp->data;
struct tc_u_hnode *ht;
struct tc_u_knode *n;
struct tc_u32_sel *s;
struct nlattr *opt = tca[TCA_OPTIONS];
struct nlattr *tb[TCA_U32_MAX + 1];
u32 htid, flags = 0;
int err;
#ifdef CONFIG_CLS_U32_PERF
size_t size;
#endif
if (opt == NULL)
return handle ? -EINVAL : 0;
err = nla_parse_nested(tb, TCA_U32_MAX, opt, u32_policy, NULL);
if (err < 0)
return err;
if (tb[TCA_U32_FLAGS]) {
flags = nla_get_u32(tb[TCA_U32_FLAGS]);
if (!tc_flags_valid(flags))
return -EINVAL;
}
n = *arg;
if (n) {
struct tc_u_knode *new;
if (TC_U32_KEY(n->handle) == 0)
return -EINVAL;
if (n->flags != flags)
return -EINVAL;
new = u32_init_knode(tp, n);
if (!new)
return -ENOMEM;
err = u32_set_parms(net, tp, base,
rtnl_dereference(n->ht_up), new, tb,
tca[TCA_RATE], ovr);
if (err) {
u32_destroy_key(tp, new, false);
return err;
}
err = u32_replace_hw_knode(tp, new, flags);
if (err) {
u32_destroy_key(tp, new, false);
return err;
}
if (!tc_in_hw(new->flags))
new->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
u32_replace_knode(tp, tp_c, new);
tcf_unbind_filter(tp, &n->res);
tcf_exts_get_net(&n->exts);
call_rcu(&n->rcu, u32_delete_key_rcu);
return 0;
}
if (tb[TCA_U32_DIVISOR]) {
unsigned int divisor = nla_get_u32(tb[TCA_U32_DIVISOR]);
if (--divisor > 0x100)
return -EINVAL;
if (TC_U32_KEY(handle))
return -EINVAL;
ht = kzalloc(sizeof(*ht) + divisor*sizeof(void *), GFP_KERNEL);
if (ht == NULL)
return -ENOBUFS;
if (handle == 0) {
handle = gen_new_htid(tp->data, ht);
if (handle == 0) {
kfree(ht);
return -ENOMEM;
}
} else {
err = idr_alloc_ext(&tp_c->handle_idr, ht, NULL,
handle, handle + 1, GFP_KERNEL);
if (err) {
kfree(ht);
return err;
}
}
ht->tp_c = tp_c;
ht->refcnt = 1;
ht->divisor = divisor;
ht->handle = handle;
ht->prio = tp->prio;
idr_init(&ht->handle_idr);
err = u32_replace_hw_hnode(tp, ht, flags);
if (err) {
idr_remove_ext(&tp_c->handle_idr, handle);
kfree(ht);
return err;
}
RCU_INIT_POINTER(ht->next, tp_c->hlist);
rcu_assign_pointer(tp_c->hlist, ht);
*arg = ht;
return 0;
}
if (tb[TCA_U32_HASH]) {
htid = nla_get_u32(tb[TCA_U32_HASH]);
if (TC_U32_HTID(htid) == TC_U32_ROOT) {
ht = rtnl_dereference(tp->root);
htid = ht->handle;
} else {
ht = u32_lookup_ht(tp->data, TC_U32_HTID(htid));
if (ht == NULL)
return -EINVAL;
}
} else {
ht = rtnl_dereference(tp->root);
htid = ht->handle;
}
if (ht->divisor < TC_U32_HASH(htid))
return -EINVAL;
if (handle) {
if (TC_U32_HTID(handle) && TC_U32_HTID(handle^htid))
return -EINVAL;
handle = htid | TC_U32_NODE(handle);
err = idr_alloc_ext(&ht->handle_idr, NULL, NULL,
handle, handle + 1,
GFP_KERNEL);
if (err)
return err;
} else
handle = gen_new_kid(ht, htid);
if (tb[TCA_U32_SEL] == NULL) {
err = -EINVAL;
goto erridr;
}
s = nla_data(tb[TCA_U32_SEL]);
n = kzalloc(sizeof(*n) + s->nkeys*sizeof(struct tc_u32_key), GFP_KERNEL);
if (n == NULL) {
err = -ENOBUFS;
goto erridr;
}
#ifdef CONFIG_CLS_U32_PERF
size = sizeof(struct tc_u32_pcnt) + s->nkeys * sizeof(u64);
n->pf = __alloc_percpu(size, __alignof__(struct tc_u32_pcnt));
if (!n->pf) {
err = -ENOBUFS;
goto errfree;
}
#endif
memcpy(&n->sel, s, sizeof(*s) + s->nkeys*sizeof(struct tc_u32_key));
RCU_INIT_POINTER(n->ht_up, ht);
n->handle = handle;
n->fshift = s->hmask ? ffs(ntohl(s->hmask)) - 1 : 0;
n->flags = flags;
n->tp = tp;
err = tcf_exts_init(&n->exts, TCA_U32_ACT, TCA_U32_POLICE);
if (err < 0)
goto errout;
#ifdef CONFIG_CLS_U32_MARK
n->pcpu_success = alloc_percpu(u32);
if (!n->pcpu_success) {
err = -ENOMEM;
goto errout;
}
if (tb[TCA_U32_MARK]) {
struct tc_u32_mark *mark;
mark = nla_data(tb[TCA_U32_MARK]);
n->val = mark->val;
n->mask = mark->mask;
}
#endif
err = u32_set_parms(net, tp, base, ht, n, tb, tca[TCA_RATE], ovr);
if (err == 0) {
struct tc_u_knode __rcu **ins;
struct tc_u_knode *pins;
err = u32_replace_hw_knode(tp, n, flags);
if (err)
goto errhw;
if (!tc_in_hw(n->flags))
n->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
ins = &ht->ht[TC_U32_HASH(handle)];
for (pins = rtnl_dereference(*ins); pins;
ins = &pins->next, pins = rtnl_dereference(*ins))
if (TC_U32_NODE(handle) < TC_U32_NODE(pins->handle))
break;
RCU_INIT_POINTER(n->next, pins);
rcu_assign_pointer(*ins, n);
*arg = n;
return 0;
}
errhw:
#ifdef CONFIG_CLS_U32_MARK
free_percpu(n->pcpu_success);
#endif
errout:
tcf_exts_destroy(&n->exts);
#ifdef CONFIG_CLS_U32_PERF
errfree:
free_percpu(n->pf);
#endif
kfree(n);
erridr:
idr_remove_ext(&ht->handle_idr, handle);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 574 | 44.09% | 3 | 6.98% |
John Fastabend | 226 | 17.36% | 6 | 13.95% |
Américo Wang | 208 | 15.98% | 7 | 16.28% |
Sridhar Samudrala | 61 | 4.69% | 1 | 2.33% |
Jamal Hadi Salim | 57 | 4.38% | 3 | 6.98% |
Patrick McHardy | 32 | 2.46% | 6 | 13.95% |
Or Gerlitz | 32 | 2.46% | 1 | 2.33% |
Catalin(ux aka Dino) M. Boie | 31 | 2.38% | 1 | 2.33% |
Jakub Kiciński | 27 | 2.07% | 2 | 4.65% |
Radu Rendec | 17 | 1.31% | 2 | 4.65% |
Benjamin LaHaise | 9 | 0.69% | 1 | 2.33% |
Eric Dumazet | 7 | 0.54% | 2 | 4.65% |
Cong Wang | 7 | 0.54% | 1 | 2.33% |
Eric W. Biedermann | 5 | 0.38% | 1 | 2.33% |
Jarek Poplawski | 4 | 0.31% | 2 | 4.65% |
Johannes Berg | 2 | 0.15% | 1 | 2.33% |
Stephen Hemminger | 1 | 0.08% | 1 | 2.33% |
Thomas Graf | 1 | 0.08% | 1 | 2.33% |
Panagiotis Issaris | 1 | 0.08% | 1 | 2.33% |
Total | 1302 | 100.00% | 43 | 100.00% |
static void u32_walk(struct tcf_proto *tp, struct tcf_walker *arg)
{
struct tc_u_common *tp_c = tp->data;
struct tc_u_hnode *ht;
struct tc_u_knode *n;
unsigned int h;
if (arg->stop)
return;
for (ht = rtnl_dereference(tp_c->hlist);
ht;
ht = rtnl_dereference(ht->next)) {
if (ht->prio != tp->prio)
continue;
if (arg->count >= arg->skip) {
if (arg->fn(tp, ht, arg) < 0) {
arg->stop = 1;
return;
}
}
arg->count++;
for (h = 0; h <= ht->divisor; h++) {
for (n = rtnl_dereference(ht->ht[h]);
n;
n = rtnl_dereference(n->next)) {
if (arg->count < arg->skip) {
arg->count++;
continue;
}
if (arg->fn(tp, n, arg) < 0) {
arg->stop = 1;
return;
}
arg->count++;
}
}
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 189 | 88.73% | 1 | 25.00% |
John Fastabend | 12 | 5.63% | 1 | 25.00% |
Patrick McHardy | 11 | 5.16% | 1 | 25.00% |
Eric Dumazet | 1 | 0.47% | 1 | 25.00% |
Total | 213 | 100.00% | 4 | 100.00% |
static void u32_bind_class(void *fh, u32 classid, unsigned long cl)
{
struct tc_u_knode *n = fh;
if (n && n->res.classid == classid)
n->res.class = cl;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 44 | 100.00% | 1 | 100.00% |
Total | 44 | 100.00% | 1 | 100.00% |
static int u32_dump(struct net *net, struct tcf_proto *tp, void *fh,
struct sk_buff *skb, struct tcmsg *t)
{
struct tc_u_knode *n = fh;
struct tc_u_hnode *ht_up, *ht_down;
struct nlattr *nest;
if (n == NULL)
return skb->len;
t->tcm_handle = n->handle;
nest = nla_nest_start(skb, TCA_OPTIONS);
if (nest == NULL)
goto nla_put_failure;
if (TC_U32_KEY(n->handle) == 0) {
struct tc_u_hnode *ht = fh;
u32 divisor = ht->divisor + 1;
if (nla_put_u32(skb, TCA_U32_DIVISOR, divisor))
goto nla_put_failure;
} else {
#ifdef CONFIG_CLS_U32_PERF
struct tc_u32_pcnt *gpf;
int cpu;
#endif
if (nla_put(skb, TCA_U32_SEL,
sizeof(n->sel) + n->sel.nkeys*sizeof(struct tc_u32_key),
&n->sel))
goto nla_put_failure;
ht_up = rtnl_dereference(n->ht_up);
if (ht_up) {
u32 htid = n->handle & 0xFFFFF000;
if (nla_put_u32(skb, TCA_U32_HASH, htid))
goto nla_put_failure;
}
if (n->res.classid &&
nla_put_u32(skb, TCA_U32_CLASSID, n->res.classid))
goto nla_put_failure;
ht_down = rtnl_dereference(n->ht_down);
if (ht_down &&
nla_put_u32(skb, TCA_U32_LINK, ht_down->handle))
goto nla_put_failure;
if (n->flags && nla_put_u32(skb, TCA_U32_FLAGS, n->flags))
goto nla_put_failure;
#ifdef CONFIG_CLS_U32_MARK
if ((n->val || n->mask)) {
struct tc_u32_mark mark = {.val = n->val,
.mask = n->mask,
.success = 0};
int cpum;
for_each_possible_cpu(cpum) {
__u32 cnt = *per_cpu_ptr(n->pcpu_success, cpum);
mark.success += cnt;
}
if (nla_put(skb, TCA_U32_MARK, sizeof(mark), &mark))
goto nla_put_failure;
}
#endif
if (tcf_exts_dump(skb, &n->exts) < 0)
goto nla_put_failure;
#ifdef CONFIG_NET_CLS_IND
if (n->ifindex) {
struct net_device *dev;
dev = __dev_get_by_index(net, n->ifindex);
if (dev && nla_put_string(skb, TCA_U32_INDEV, dev->name))
goto nla_put_failure;
}
#endif
#ifdef CONFIG_CLS_U32_PERF
gpf = kzalloc(sizeof(struct tc_u32_pcnt) +
n->sel.nkeys * sizeof(u64),
GFP_KERNEL);
if (!gpf)
goto nla_put_failure;
for_each_possible_cpu(cpu) {
int i;
struct tc_u32_pcnt *pf = per_cpu_ptr(n->pf, cpu);
gpf->rcnt += pf->rcnt;
gpf->rhit += pf->rhit;
for (i = 0; i < n->sel.nkeys; i++)
gpf->kcnts[i] += pf->kcnts[i];
}
if (nla_put_64bit(skb, TCA_U32_PCNT,
sizeof(struct tc_u32_pcnt) +
n->sel.nkeys * sizeof(u64),
gpf, TCA_U32_PAD)) {
kfree(gpf);
goto nla_put_failure;
}
kfree(gpf);
#endif
}
nla_nest_end(skb, nest);
if (TC_U32_KEY(n->handle))
if (tcf_exts_dump_stats(skb, &n->exts) < 0)
goto nla_put_failure;
return skb->len;
nla_put_failure:
nla_nest_cancel(skb, nest);
return -1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
John Fastabend | 231 | 35.54% | 4 | 20.00% |
Linus Torvalds (pre-git) | 210 | 32.31% | 3 | 15.00% |
Jamal Hadi Salim | 66 | 10.15% | 2 | 10.00% |
David S. Miller | 51 | 7.85% | 1 | 5.00% |
Américo Wang | 30 | 4.62% | 3 | 15.00% |
Catalin(ux aka Dino) M. Boie | 27 | 4.15% | 1 | 5.00% |
Patrick McHardy | 21 | 3.23% | 2 | 10.00% |
Thomas Graf | 9 | 1.38% | 2 | 10.00% |
Nicolas Dichtel | 3 | 0.46% | 1 | 5.00% |
Arnaldo Carvalho de Melo | 2 | 0.31% | 1 | 5.00% |
Total | 650 | 100.00% | 20 | 100.00% |
static struct tcf_proto_ops cls_u32_ops __read_mostly = {
.kind = "u32",
.classify = u32_classify,
.init = u32_init,
.destroy = u32_destroy,
.get = u32_get,
.change = u32_change,
.delete = u32_delete,
.walk = u32_walk,
.dump = u32_dump,
.bind_class = u32_bind_class,
.owner = THIS_MODULE,
};
static int __init init_u32(void)
{
int i, ret;
pr_info("u32 classifier\n");
#ifdef CONFIG_CLS_U32_PERF
pr_info(" Performance counters on\n");
#endif
#ifdef CONFIG_NET_CLS_IND
pr_info(" input device check on\n");
#endif
#ifdef CONFIG_NET_CLS_ACT
pr_info(" Actions configured\n");
#endif
tc_u_common_hash = kvmalloc_array(U32_HASH_SIZE,
sizeof(struct hlist_head),
GFP_KERNEL);
if (!tc_u_common_hash)
return -ENOMEM;
for (i = 0; i < U32_HASH_SIZE; i++)
INIT_HLIST_HEAD(&tc_u_common_hash[i]);
ret = register_tcf_proto_ops(&cls_u32_ops);
if (ret)
kvfree(tc_u_common_hash);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 64 | 55.65% | 1 | 14.29% |
Jamal Hadi Salim | 28 | 24.35% | 1 | 14.29% |
Linus Torvalds (pre-git) | 13 | 11.30% | 1 | 14.29% |
Stephen Hemminger | 4 | 3.48% | 1 | 14.29% |
Al Viro | 3 | 2.61% | 1 | 14.29% |
Frans Pop | 2 | 1.74% | 1 | 14.29% |
Ralf Hildebrandt | 1 | 0.87% | 1 | 14.29% |
Total | 115 | 100.00% | 7 | 100.00% |
static void __exit exit_u32(void)
{
unregister_tcf_proto_ops(&cls_u32_ops);
kvfree(tc_u_common_hash);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 12 | 60.00% | 1 | 33.33% |
Américo Wang | 5 | 25.00% | 1 | 33.33% |
Al Viro | 3 | 15.00% | 1 | 33.33% |
Total | 20 | 100.00% | 3 | 100.00% |
module_init(init_u32)
module_exit(exit_u32)
MODULE_LICENSE("GPL");
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 2571 | 38.28% | 4 | 4.04% |
John Fastabend | 1461 | 21.75% | 9 | 9.09% |
Américo Wang | 1053 | 15.68% | 14 | 14.14% |
Jiri Pirko | 335 | 4.99% | 6 | 6.06% |
Jamal Hadi Salim | 282 | 4.20% | 4 | 4.04% |
Patrick McHardy | 194 | 2.89% | 10 | 10.10% |
Changli Gao | 116 | 1.73% | 1 | 1.01% |
Sridhar Samudrala | 103 | 1.53% | 1 | 1.01% |
Catalin(ux aka Dino) M. Boie | 102 | 1.52% | 1 | 1.01% |
David S. Miller | 88 | 1.31% | 4 | 4.04% |
Cong Wang | 77 | 1.15% | 3 | 3.03% |
Thomas Graf | 75 | 1.12% | 5 | 5.05% |
Jakub Kiciński | 35 | 0.52% | 4 | 4.04% |
Or Gerlitz | 34 | 0.51% | 1 | 1.01% |
Eric Dumazet | 33 | 0.49% | 3 | 3.03% |
Stephen Hemminger | 32 | 0.48% | 5 | 5.05% |
Jarek Poplawski | 26 | 0.39% | 2 | 2.02% |
Radu Rendec | 20 | 0.30% | 2 | 2.02% |
Benjamin LaHaise | 16 | 0.24% | 1 | 1.01% |
Al Viro | 16 | 0.24% | 2 | 2.02% |
Arnaldo Carvalho de Melo | 12 | 0.18% | 3 | 3.03% |
Linus Torvalds | 6 | 0.09% | 2 | 2.02% |
Eric W. Biedermann | 5 | 0.07% | 1 | 1.01% |
Ilpo Järvinen | 5 | 0.07% | 1 | 1.01% |
Panagiotis Issaris | 3 | 0.04% | 1 | 1.01% |
Tejun Heo | 3 | 0.04% | 1 | 1.01% |
Nicolas Dichtel | 3 | 0.04% | 1 | 1.01% |
Dan Carpenter | 2 | 0.03% | 1 | 1.01% |
Johannes Berg | 2 | 0.03% | 1 | 1.01% |
Frans Pop | 2 | 0.03% | 1 | 1.01% |
Ralf Hildebrandt | 1 | 0.01% | 1 | 1.01% |
Colin Ian King | 1 | 0.01% | 1 | 1.01% |
Arnd Bergmann | 1 | 0.01% | 1 | 1.01% |
Joe Perches | 1 | 0.01% | 1 | 1.01% |
Total | 6716 | 100.00% | 99 | 100.00% |
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