Skip to content

Commit aebe442

Browse files
pmachatadavem330
pmachata
authored and
davem330
committed
net: sched: Pass root lock to Qdisc_ops.enqueue
A following patch introduces qevents, points in qdisc algorithm where packet can be processed by user-defined filters. Should this processing lead to a situation where a new packet is to be enqueued on the same port, holding the root lock would lead to deadlocks. To solve the issue, qevent handler needs to unlock and relock the root lock when necessary. To that end, add the root lock argument to the qdisc op enqueue, and propagate throughout. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
1 parent 5e701e4 commit aebe442

35 files changed

+73
-71
lines changed

‎include/net/sch_generic.h

Lines changed: 4 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -57,6 +57,7 @@ struct qdisc_skb_head {
5757
struct Qdisc {
5858
int (*enqueue)(struct sk_buff *skb,
5959
struct Qdisc *sch,
60+
spinlock_t *root_lock,
6061
struct sk_buff **to_free);
6162
struct sk_buff * (*dequeue)(struct Qdisc *sch);
6263
unsigned int flags;
@@ -241,6 +242,7 @@ struct Qdisc_ops {
241242

242243
int (*enqueue)(struct sk_buff *skb,
243244
struct Qdisc *sch,
245+
spinlock_t *root_lock,
244246
struct sk_buff **to_free);
245247
struct sk_buff * (*dequeue)(struct Qdisc *);
246248
struct sk_buff * (*peek)(struct Qdisc *);
@@ -788,11 +790,11 @@ static inline void qdisc_calculate_pkt_len(struct sk_buff *skb,
788790
#endif
789791
}
790792

791-
static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
793+
static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
792794
struct sk_buff **to_free)
793795
{
794796
qdisc_calculate_pkt_len(skb, sch);
795-
return sch->enqueue(skb, sch, to_free);
797+
return sch->enqueue(skb, sch, root_lock, to_free);
796798
}
797799

798800
static inline void _bstats_update(struct gnet_stats_basic_packed *bstats,

‎net/core/dev.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -3749,7 +3749,7 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
37493749
qdisc_calculate_pkt_len(skb, q);
37503750

37513751
if (q->flags & TCQ_F_NOLOCK) {
3752-
rc = q->enqueue(skb, q, &to_free) & NET_XMIT_MASK;
3752+
rc = q->enqueue(skb, q, NULL, &to_free) & NET_XMIT_MASK;
37533753
qdisc_run(q);
37543754

37553755
if (unlikely(to_free))
@@ -3792,7 +3792,7 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
37923792
qdisc_run_end(q);
37933793
rc = NET_XMIT_SUCCESS;
37943794
} else {
3795-
rc = q->enqueue(skb, q, &to_free) & NET_XMIT_MASK;
3795+
rc = q->enqueue(skb, q, root_lock, &to_free) & NET_XMIT_MASK;
37963796
if (qdisc_run_begin(q)) {
37973797
if (unlikely(contended)) {
37983798
spin_unlock(&q->busylock);

‎net/sched/sch_atm.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -374,7 +374,7 @@ static struct tcf_block *atm_tc_tcf_block(struct Qdisc *sch, unsigned long cl,
374374

375375
/* --------------------------- Qdisc operations ---------------------------- */
376376

377-
static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
377+
static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
378378
struct sk_buff **to_free)
379379
{
380380
struct atm_qdisc_data *p = qdisc_priv(sch);
@@ -432,7 +432,7 @@ static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
432432
#endif
433433
}
434434

435-
ret = qdisc_enqueue(skb, flow->q, to_free);
435+
ret = qdisc_enqueue(skb, flow->q, root_lock, to_free);
436436
if (ret != NET_XMIT_SUCCESS) {
437437
drop: __maybe_unused
438438
if (net_xmit_drop_count(ret)) {

‎net/sched/sch_blackhole.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -13,7 +13,7 @@
1313
#include <linux/skbuff.h>
1414
#include <net/pkt_sched.h>
1515

16-
static int blackhole_enqueue(struct sk_buff *skb, struct Qdisc *sch,
16+
static int blackhole_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
1717
struct sk_buff **to_free)
1818
{
1919
qdisc_drop(skb, sch, to_free);

‎net/sched/sch_cake.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1687,7 +1687,7 @@ static u32 cake_classify(struct Qdisc *sch, struct cake_tin_data **t,
16871687

16881688
static void cake_reconfigure(struct Qdisc *sch);
16891689

1690-
static s32 cake_enqueue(struct sk_buff *skb, struct Qdisc *sch,
1690+
static s32 cake_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
16911691
struct sk_buff **to_free)
16921692
{
16931693
struct cake_sched_data *q = qdisc_priv(sch);

‎net/sched/sch_cbq.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -356,7 +356,7 @@ cbq_mark_toplevel(struct cbq_sched_data *q, struct cbq_class *cl)
356356
}
357357

358358
static int
359-
cbq_enqueue(struct sk_buff *skb, struct Qdisc *sch,
359+
cbq_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
360360
struct sk_buff **to_free)
361361
{
362362
struct cbq_sched_data *q = qdisc_priv(sch);
@@ -373,7 +373,7 @@ cbq_enqueue(struct sk_buff *skb, struct Qdisc *sch,
373373
return ret;
374374
}
375375

376-
ret = qdisc_enqueue(skb, cl->q, to_free);
376+
ret = qdisc_enqueue(skb, cl->q, root_lock, to_free);
377377
if (ret == NET_XMIT_SUCCESS) {
378378
sch->q.qlen++;
379379
cbq_mark_toplevel(q, cl);

‎net/sched/sch_cbs.c

Lines changed: 9 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -77,21 +77,21 @@ struct cbs_sched_data {
7777
s64 sendslope; /* in bytes/s */
7878
s64 idleslope; /* in bytes/s */
7979
struct qdisc_watchdog watchdog;
80-
int (*enqueue)(struct sk_buff *skb, struct Qdisc *sch,
80+
int (*enqueue)(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
8181
struct sk_buff **to_free);
8282
struct sk_buff *(*dequeue)(struct Qdisc *sch);
8383
struct Qdisc *qdisc;
8484
struct list_head cbs_list;
8585
};
8686

8787
static int cbs_child_enqueue(struct sk_buff *skb, struct Qdisc *sch,
88-
struct Qdisc *child,
88+
struct Qdisc *child, spinlock_t *root_lock,
8989
struct sk_buff **to_free)
9090
{
9191
unsigned int len = qdisc_pkt_len(skb);
9292
int err;
9393

94-
err = child->ops->enqueue(skb, child, to_free);
94+
err = child->ops->enqueue(skb, child, root_lock, to_free);
9595
if (err != NET_XMIT_SUCCESS)
9696
return err;
9797

@@ -101,16 +101,16 @@ static int cbs_child_enqueue(struct sk_buff *skb, struct Qdisc *sch,
101101
return NET_XMIT_SUCCESS;
102102
}
103103

104-
static int cbs_enqueue_offload(struct sk_buff *skb, struct Qdisc *sch,
104+
static int cbs_enqueue_offload(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
105105
struct sk_buff **to_free)
106106
{
107107
struct cbs_sched_data *q = qdisc_priv(sch);
108108
struct Qdisc *qdisc = q->qdisc;
109109

110-
return cbs_child_enqueue(skb, sch, qdisc, to_free);
110+
return cbs_child_enqueue(skb, sch, qdisc, root_lock, to_free);
111111
}
112112

113-
static int cbs_enqueue_soft(struct sk_buff *skb, struct Qdisc *sch,
113+
static int cbs_enqueue_soft(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
114114
struct sk_buff **to_free)
115115
{
116116
struct cbs_sched_data *q = qdisc_priv(sch);
@@ -124,15 +124,15 @@ static int cbs_enqueue_soft(struct sk_buff *skb, struct Qdisc *sch,
124124
q->last = ktime_get_ns();
125125
}
126126

127-
return cbs_child_enqueue(skb, sch, qdisc, to_free);
127+
return cbs_child_enqueue(skb, sch, qdisc, root_lock, to_free);
128128
}
129129

130-
static int cbs_enqueue(struct sk_buff *skb, struct Qdisc *sch,
130+
static int cbs_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
131131
struct sk_buff **to_free)
132132
{
133133
struct cbs_sched_data *q = qdisc_priv(sch);
134134

135-
return q->enqueue(skb, sch, to_free);
135+
return q->enqueue(skb, sch, root_lock, to_free);
136136
}
137137

138138
/* timediff is in ns, slope is in bytes/s */

‎net/sched/sch_choke.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -210,7 +210,7 @@ static bool choke_match_random(const struct choke_sched_data *q,
210210
return choke_match_flow(oskb, nskb);
211211
}
212212

213-
static int choke_enqueue(struct sk_buff *skb, struct Qdisc *sch,
213+
static int choke_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
214214
struct sk_buff **to_free)
215215
{
216216
struct choke_sched_data *q = qdisc_priv(sch);

‎net/sched/sch_codel.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -108,7 +108,7 @@ static struct sk_buff *codel_qdisc_dequeue(struct Qdisc *sch)
108108
return skb;
109109
}
110110

111-
static int codel_qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
111+
static int codel_qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
112112
struct sk_buff **to_free)
113113
{
114114
struct codel_sched_data *q;

‎net/sched/sch_drr.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -337,7 +337,7 @@ static struct drr_class *drr_classify(struct sk_buff *skb, struct Qdisc *sch,
337337
return NULL;
338338
}
339339

340-
static int drr_enqueue(struct sk_buff *skb, struct Qdisc *sch,
340+
static int drr_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
341341
struct sk_buff **to_free)
342342
{
343343
unsigned int len = qdisc_pkt_len(skb);
@@ -355,7 +355,7 @@ static int drr_enqueue(struct sk_buff *skb, struct Qdisc *sch,
355355
}
356356

357357
first = !cl->qdisc->q.qlen;
358-
err = qdisc_enqueue(skb, cl->qdisc, to_free);
358+
err = qdisc_enqueue(skb, cl->qdisc, root_lock, to_free);
359359
if (unlikely(err != NET_XMIT_SUCCESS)) {
360360
if (net_xmit_drop_count(err)) {
361361
cl->qstats.drops++;

‎net/sched/sch_dsmark.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -198,7 +198,7 @@ static struct tcf_block *dsmark_tcf_block(struct Qdisc *sch, unsigned long cl,
198198

199199
/* --------------------------- Qdisc operations ---------------------------- */
200200

201-
static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch,
201+
static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
202202
struct sk_buff **to_free)
203203
{
204204
unsigned int len = qdisc_pkt_len(skb);
@@ -267,7 +267,7 @@ static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch,
267267
}
268268
}
269269

270-
err = qdisc_enqueue(skb, p->q, to_free);
270+
err = qdisc_enqueue(skb, p->q, root_lock, to_free);
271271
if (err != NET_XMIT_SUCCESS) {
272272
if (net_xmit_drop_count(err))
273273
qdisc_qstats_drop(sch);

‎net/sched/sch_etf.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -160,7 +160,7 @@ static void report_sock_error(struct sk_buff *skb, u32 err, u8 code)
160160
}
161161

162162
static int etf_enqueue_timesortedlist(struct sk_buff *nskb, struct Qdisc *sch,
163-
struct sk_buff **to_free)
163+
spinlock_t *root_lock, struct sk_buff **to_free)
164164
{
165165
struct etf_sched_data *q = qdisc_priv(sch);
166166
struct rb_node **p = &q->head.rb_root.rb_node, *parent = NULL;

‎net/sched/sch_ets.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -415,7 +415,7 @@ static struct ets_class *ets_classify(struct sk_buff *skb, struct Qdisc *sch,
415415
return &q->classes[band];
416416
}
417417

418-
static int ets_qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
418+
static int ets_qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
419419
struct sk_buff **to_free)
420420
{
421421
unsigned int len = qdisc_pkt_len(skb);
@@ -433,7 +433,7 @@ static int ets_qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
433433
}
434434

435435
first = !cl->qdisc->q.qlen;
436-
err = qdisc_enqueue(skb, cl->qdisc, to_free);
436+
err = qdisc_enqueue(skb, cl->qdisc, root_lock, to_free);
437437
if (unlikely(err != NET_XMIT_SUCCESS)) {
438438
if (net_xmit_drop_count(err)) {
439439
cl->qstats.drops++;

‎net/sched/sch_fifo.c

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -16,7 +16,7 @@
1616

1717
/* 1 band FIFO pseudo-"scheduler" */
1818

19-
static int bfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch,
19+
static int bfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
2020
struct sk_buff **to_free)
2121
{
2222
if (likely(sch->qstats.backlog + qdisc_pkt_len(skb) <= sch->limit))
@@ -25,7 +25,7 @@ static int bfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch,
2525
return qdisc_drop(skb, sch, to_free);
2626
}
2727

28-
static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch,
28+
static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
2929
struct sk_buff **to_free)
3030
{
3131
if (likely(sch->q.qlen < sch->limit))
@@ -34,7 +34,7 @@ static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch,
3434
return qdisc_drop(skb, sch, to_free);
3535
}
3636

37-
static int pfifo_tail_enqueue(struct sk_buff *skb, struct Qdisc *sch,
37+
static int pfifo_tail_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
3838
struct sk_buff **to_free)
3939
{
4040
unsigned int prev_backlog;

‎net/sched/sch_fq.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -439,7 +439,7 @@ static bool fq_packet_beyond_horizon(const struct sk_buff *skb,
439439
return unlikely((s64)skb->tstamp > (s64)(q->ktime_cache + q->horizon));
440440
}
441441

442-
static int fq_enqueue(struct sk_buff *skb, struct Qdisc *sch,
442+
static int fq_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
443443
struct sk_buff **to_free)
444444
{
445445
struct fq_sched_data *q = qdisc_priv(sch);

‎net/sched/sch_fq_codel.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -181,7 +181,7 @@ static unsigned int fq_codel_drop(struct Qdisc *sch, unsigned int max_packets,
181181
return idx;
182182
}
183183

184-
static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch,
184+
static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
185185
struct sk_buff **to_free)
186186
{
187187
struct fq_codel_sched_data *q = qdisc_priv(sch);

‎net/sched/sch_fq_pie.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -125,7 +125,7 @@ static inline void flow_queue_add(struct fq_pie_flow *flow,
125125
skb->next = NULL;
126126
}
127127

128-
static int fq_pie_qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
128+
static int fq_pie_qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
129129
struct sk_buff **to_free)
130130
{
131131
struct fq_pie_sched_data *q = qdisc_priv(sch);

‎net/sched/sch_generic.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -520,7 +520,7 @@ EXPORT_SYMBOL(netif_carrier_off);
520520
cheaper.
521521
*/
522522

523-
static int noop_enqueue(struct sk_buff *skb, struct Qdisc *qdisc,
523+
static int noop_enqueue(struct sk_buff *skb, struct Qdisc *qdisc, spinlock_t *root_lock,
524524
struct sk_buff **to_free)
525525
{
526526
__qdisc_drop(skb, to_free);
@@ -614,7 +614,7 @@ static inline struct skb_array *band2list(struct pfifo_fast_priv *priv,
614614
return &priv->q[band];
615615
}
616616

617-
static int pfifo_fast_enqueue(struct sk_buff *skb, struct Qdisc *qdisc,
617+
static int pfifo_fast_enqueue(struct sk_buff *skb, struct Qdisc *qdisc, spinlock_t *root_lock,
618618
struct sk_buff **to_free)
619619
{
620620
int band = prio2band[skb->priority & TC_PRIO_MAX];

‎net/sched/sch_gred.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -161,7 +161,7 @@ static bool gred_per_vq_red_flags_used(struct gred_sched *table)
161161
return false;
162162
}
163163

164-
static int gred_enqueue(struct sk_buff *skb, struct Qdisc *sch,
164+
static int gred_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
165165
struct sk_buff **to_free)
166166
{
167167
struct gred_sched_data *q = NULL;

‎net/sched/sch_hfsc.c

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1528,8 +1528,8 @@ hfsc_dump_qdisc(struct Qdisc *sch, struct sk_buff *skb)
15281528
return -1;
15291529
}
15301530

1531-
static int
1532-
hfsc_enqueue(struct sk_buff *skb, struct Qdisc *sch, struct sk_buff **to_free)
1531+
static int hfsc_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
1532+
struct sk_buff **to_free)
15331533
{
15341534
unsigned int len = qdisc_pkt_len(skb);
15351535
struct hfsc_class *cl;
@@ -1545,7 +1545,7 @@ hfsc_enqueue(struct sk_buff *skb, struct Qdisc *sch, struct sk_buff **to_free)
15451545
}
15461546

15471547
first = !cl->qdisc->q.qlen;
1548-
err = qdisc_enqueue(skb, cl->qdisc, to_free);
1548+
err = qdisc_enqueue(skb, cl->qdisc, root_lock, to_free);
15491549
if (unlikely(err != NET_XMIT_SUCCESS)) {
15501550
if (net_xmit_drop_count(err)) {
15511551
cl->qstats.drops++;

‎net/sched/sch_hhf.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -368,7 +368,7 @@ static unsigned int hhf_drop(struct Qdisc *sch, struct sk_buff **to_free)
368368
return bucket - q->buckets;
369369
}
370370

371-
static int hhf_enqueue(struct sk_buff *skb, struct Qdisc *sch,
371+
static int hhf_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
372372
struct sk_buff **to_free)
373373
{
374374
struct hhf_sched_data *q = qdisc_priv(sch);

‎net/sched/sch_htb.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -576,7 +576,7 @@ static inline void htb_deactivate(struct htb_sched *q, struct htb_class *cl)
576576
cl->prio_activity = 0;
577577
}
578578

579-
static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch,
579+
static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
580580
struct sk_buff **to_free)
581581
{
582582
int uninitialized_var(ret);
@@ -599,7 +599,7 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch,
599599
__qdisc_drop(skb, to_free);
600600
return ret;
601601
#endif
602-
} else if ((ret = qdisc_enqueue(skb, cl->leaf.q,
602+
} else if ((ret = qdisc_enqueue(skb, cl->leaf.q, root_lock,
603603
to_free)) != NET_XMIT_SUCCESS) {
604604
if (net_xmit_drop_count(ret)) {
605605
qdisc_qstats_drop(sch);

‎net/sched/sch_multiq.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -57,7 +57,7 @@ multiq_classify(struct sk_buff *skb, struct Qdisc *sch, int *qerr)
5757
}
5858

5959
static int
60-
multiq_enqueue(struct sk_buff *skb, struct Qdisc *sch,
60+
multiq_enqueue(struct sk_buff *skb, struct Qdisc *sch, spinlock_t *root_lock,
6161
struct sk_buff **to_free)
6262
{
6363
struct Qdisc *qdisc;
@@ -74,7 +74,7 @@ multiq_enqueue(struct sk_buff *skb, struct Qdisc *sch,
7474
}
7575
#endif
7676

77-
ret = qdisc_enqueue(skb, qdisc, to_free);
77+
ret = qdisc_enqueue(skb, qdisc, root_lock, to_free);
7878
if (ret == NET_XMIT_SUCCESS) {
7979
sch->q.qlen++;
8080
return NET_XMIT_SUCCESS;

0 commit comments

Comments
 (0)