From: Eric Dumazet <edumazet@google.com>
To: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org, eric.dumazet@gmail.com,
Eric Dumazet <edumazet@google.com>
Subject: [PATCH net-next 3/5] net: move skb_defer_free_flush() up
Date: Fri, 21 Apr 2023 09:43:55 +0000 [thread overview]
Message-ID: <20230421094357.1693410-4-edumazet@google.com> (raw)
In-Reply-To: <20230421094357.1693410-1-edumazet@google.com>
We plan using skb_defer_free_flush() from napi_threaded_poll()
in the following patch.
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
net/core/dev.c | 42 +++++++++++++++++++++---------------------
1 file changed, 21 insertions(+), 21 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index d15568f5a44f1a397941bd5fca3873ee4d7d0e48..81ded215731bdbb3a025fe40ed9638123d97a347 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -6598,6 +6598,27 @@ static int napi_thread_wait(struct napi_struct *napi)
return -1;
}
+static void skb_defer_free_flush(struct softnet_data *sd)
+{
+ struct sk_buff *skb, *next;
+
+ /* Paired with WRITE_ONCE() in skb_attempt_defer_free() */
+ if (!READ_ONCE(sd->defer_list))
+ return;
+
+ spin_lock(&sd->defer_lock);
+ skb = sd->defer_list;
+ sd->defer_list = NULL;
+ sd->defer_count = 0;
+ spin_unlock(&sd->defer_lock);
+
+ while (skb != NULL) {
+ next = skb->next;
+ napi_consume_skb(skb, 1);
+ skb = next;
+ }
+}
+
static int napi_threaded_poll(void *data)
{
struct napi_struct *napi = data;
@@ -6624,27 +6645,6 @@ static int napi_threaded_poll(void *data)
return 0;
}
-static void skb_defer_free_flush(struct softnet_data *sd)
-{
- struct sk_buff *skb, *next;
-
- /* Paired with WRITE_ONCE() in skb_attempt_defer_free() */
- if (!READ_ONCE(sd->defer_list))
- return;
-
- spin_lock(&sd->defer_lock);
- skb = sd->defer_list;
- sd->defer_list = NULL;
- sd->defer_count = 0;
- spin_unlock(&sd->defer_lock);
-
- while (skb != NULL) {
- next = skb->next;
- napi_consume_skb(skb, 1);
- skb = next;
- }
-}
-
static __latent_entropy void net_rx_action(struct softirq_action *h)
{
struct softnet_data *sd = this_cpu_ptr(&softnet_data);
--
2.40.0.634.g4ca3ef3211-goog
next prev parent reply other threads:[~2023-04-21 9:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-21 9:43 [PATCH net-next 0/5] net: give napi_threaded_poll() some love Eric Dumazet
2023-04-21 9:43 ` [PATCH net-next 1/5] net: add debugging checks in skb_attempt_defer_free() Eric Dumazet
2023-04-21 9:43 ` [PATCH net-next 2/5] net: do not provide hard irq safety for sd->defer_lock Eric Dumazet
2023-04-21 9:43 ` Eric Dumazet [this message]
2023-04-21 9:43 ` [PATCH net-next 4/5] net: make napi_threaded_poll() aware of sd->defer_list Eric Dumazet
2023-04-21 9:43 ` [PATCH net-next 5/5] net: optimize napi_threaded_poll() vs RPS/RFS Eric Dumazet
2023-04-21 13:09 ` Paolo Abeni
2023-04-21 14:05 ` Jakub Kicinski
2023-04-21 14:06 ` Eric Dumazet
2023-04-21 15:21 ` Paolo Abeni
2023-04-23 12:50 ` [PATCH net-next 0/5] net: give napi_threaded_poll() some love patchwork-bot+netdevbpf
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