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kernel: fix kernel warning and network issue in the backlog threading patch

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Fixes enabling it early during the boot

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2023-03-28 12:46:11 +02:00
parent d98c4fb8bf
commit f1c9bd6f6f
1 changed files with 26 additions and 8 deletions
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34
target/linux/generic/pending-5.15/760-net-core-add-optional-threading-for-backlog-processi.patch
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@ -30,7 +30,17 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#endif
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4574,7 +4574,7 @@ static int rps_ipi_queued(struct softnet
@@ -4558,7 +4558,8 @@ static void rps_trigger_softirq(void *da
{
struct softnet_data *sd = data;
- ____napi_schedule(sd, &sd->backlog);
+ if (!__test_and_set_bit(NAPI_STATE_SCHED, &sd->backlog.state))
+ ____napi_schedule(sd, &sd->backlog);
sd->received_rps++;
}
@@ -4574,7 +4575,7 @@ static int rps_ipi_queued(struct softnet
#ifdef CONFIG_RPS
struct softnet_data *mysd = this_cpu_ptr(&softnet_data);
@ -39,7 +49,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
sd->rps_ipi_next = mysd->rps_ipi_list;
mysd->rps_ipi_list = sd;
@@ -5755,6 +5755,8 @@ static DEFINE_PER_CPU(struct work_struct
@@ -5755,6 +5756,8 @@ static DEFINE_PER_CPU(struct work_struct
/* Network device is going away, flush any packets still pending */
static void flush_backlog(struct work_struct *work)
{
@ -48,7 +58,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
struct sk_buff *skb, *tmp;
struct softnet_data *sd;
@@ -5770,9 +5772,18 @@ static void flush_backlog(struct work_st
@@ -5770,9 +5773,18 @@ static void flush_backlog(struct work_st
input_queue_head_incr(sd);
}
}
@ -67,7 +77,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
skb_queue_walk_safe(&sd->process_queue, skb, tmp) {
if (skb->dev->reg_state == NETREG_UNREGISTERING) {
__skb_unlink(skb, &sd->process_queue);
@@ -5780,7 +5791,18 @@ static void flush_backlog(struct work_st
@@ -5780,7 +5792,18 @@ static void flush_backlog(struct work_st
input_queue_head_incr(sd);
}
}
@ -86,7 +96,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
}
static bool flush_required(int cpu)
@@ -6463,6 +6485,7 @@ static int process_backlog(struct napi_s
@@ -6463,6 +6486,7 @@ static int process_backlog(struct napi_s
local_irq_disable();
rps_lock(sd);
@ -94,7 +104,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
if (skb_queue_empty(&sd->input_pkt_queue)) {
/*
* Inline a custom version of __napi_complete().
@@ -6472,7 +6495,8 @@ static int process_backlog(struct napi_s
@@ -6472,7 +6496,8 @@ static int process_backlog(struct napi_s
* We can use a plain write instead of clear_bit(),
* and we dont need an smp_mb() memory barrier.
*/
@ -104,7 +114,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
again = false;
} else {
skb_queue_splice_tail_init(&sd->input_pkt_queue,
@@ -6889,6 +6913,57 @@ int dev_set_threaded(struct net_device *
@@ -6889,6 +6914,57 @@ int dev_set_threaded(struct net_device *
}
EXPORT_SYMBOL(dev_set_threaded);
@ -162,7 +172,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
int (*poll)(struct napi_struct *, int), int weight)
{
@@ -11367,6 +11442,9 @@ static int dev_cpu_dead(unsigned int old
@@ -11367,6 +11443,9 @@ static int dev_cpu_dead(unsigned int old
raise_softirq_irqoff(NET_TX_SOFTIRQ);
local_irq_enable();
@ -172,6 +182,14 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#ifdef CONFIG_RPS
remsd = oldsd->rps_ipi_list;
oldsd->rps_ipi_list = NULL;
@@ -11706,6 +11785,7 @@ static int __init net_dev_init(void)
sd->cpu = i;
#endif
+ INIT_LIST_HEAD(&sd->backlog.poll_list);
init_gro_hash(&sd->backlog);
sd->backlog.poll = process_backlog;
sd->backlog.weight = weight_p;
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -28,6 +28,7 @@ static int int_3600 = 3600;