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3ae5da5adc
Deleted (upstreamed): ath79/patches-5.10/921-serial-core-add-support-for-boot-console-with-arbitr.patch [1] bcm53xx/patches-5.10/033-v5.15-0012-ARM-dts-BCM5301X-Fix-memory-nodes-names.patch [2] lantiq/patches-5.10/0016-mtd-rawnand-xway-Keep-the-driver-compatible-with-on-.patch [3] lantiq/patches-5.10/0110-MIPS-lantiq-dma-add-small-delay-after-reset.patch [4] lantiq/patches-5.10/0111-MIPS-lantiq-dma-reset-correct-number-of-channel.patch [5] lantiq/patches-5.10/0112-MIPS-lantiq-dma-fix-burst-length-for-DEU.patch [6] Manually rebased: ipq806x/patches-5.10/0065-arm-override-compiler-flags.patch [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.80&id=47462c5e600fbaffd755cd13dedd80d04e41ff83 [2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.80&id=2fde76df1885a6bec04317e457121326070450eb [3] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.80&id=9b366f5221d8aa64b22f35be137a5749326444ce [4] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.80&id=5af57ce8a6155fe3e4270d28d171abf8903bebc0 [5] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.80&id=b92a5df2c7adc79a57481445f67de0c1c716581f [6] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.80&id=6b72caabc47011d03f44064452b2c65e8ed18326 Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
89 lines
2.3 KiB
Diff
89 lines
2.3 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Mon, 8 Feb 2021 11:34:08 -0800
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Subject: [PATCH] net: extract napi poll functionality to __napi_poll()
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This commit introduces a new function __napi_poll() which does the main
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logic of the existing napi_poll() function, and will be called by other
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functions in later commits.
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This idea and implementation is done by Felix Fietkau <nbd@nbd.name> and
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is proposed as part of the patch to move napi work to work_queue
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context.
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This commit by itself is a code restructure.
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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Signed-off-by: Wei Wang <weiwan@google.com>
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Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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--- a/net/core/dev.c
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+++ b/net/core/dev.c
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@@ -6802,15 +6802,10 @@ void __netif_napi_del(struct napi_struct
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}
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EXPORT_SYMBOL(__netif_napi_del);
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-static int napi_poll(struct napi_struct *n, struct list_head *repoll)
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+static int __napi_poll(struct napi_struct *n, bool *repoll)
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{
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- void *have;
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int work, weight;
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- list_del_init(&n->poll_list);
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-
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- have = netpoll_poll_lock(n);
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-
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weight = n->weight;
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/* This NAPI_STATE_SCHED test is for avoiding a race
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@@ -6830,7 +6825,7 @@ static int napi_poll(struct napi_struct
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n->poll, work, weight);
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if (likely(work < weight))
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- goto out_unlock;
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+ return work;
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/* Drivers must not modify the NAPI state if they
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* consume the entire weight. In such cases this code
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@@ -6839,7 +6834,7 @@ static int napi_poll(struct napi_struct
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*/
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if (unlikely(napi_disable_pending(n))) {
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napi_complete(n);
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- goto out_unlock;
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+ return work;
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}
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if (n->gro_bitmask) {
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@@ -6857,12 +6852,29 @@ static int napi_poll(struct napi_struct
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if (unlikely(!list_empty(&n->poll_list))) {
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pr_warn_once("%s: Budget exhausted after napi rescheduled\n",
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n->dev ? n->dev->name : "backlog");
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- goto out_unlock;
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+ return work;
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}
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- list_add_tail(&n->poll_list, repoll);
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+ *repoll = true;
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+
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+ return work;
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+}
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+
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+static int napi_poll(struct napi_struct *n, struct list_head *repoll)
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+{
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+ bool do_repoll = false;
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+ void *have;
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+ int work;
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+
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+ list_del_init(&n->poll_list);
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+
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+ have = netpoll_poll_lock(n);
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+
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+ work = __napi_poll(n, &do_repoll);
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+
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+ if (do_repoll)
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+ list_add_tail(&n->poll_list, repoll);
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-out_unlock:
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netpoll_poll_unlock(have);
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return work;
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