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Message-Id: <20220412121557.3553555-9-jakobkoschel@gmail.com>
Date: Tue, 12 Apr 2022 14:15:47 +0200
From: Jakob Koschel <jakobkoschel@...il.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...il.com>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
Lars Povlsen <lars.povlsen@...rochip.com>,
Steen Hegelund <Steen.Hegelund@...rochip.com>,
UNGLinuxDriver@...rochip.com, Ariel Elior <aelior@...vell.com>,
Manish Chopra <manishc@...vell.com>,
Edward Cree <ecree.xilinx@...il.com>,
Martin Habets <habetsm.xilinx@...il.com>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Jiri Pirko <jiri@...nulli.us>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>,
Casper Andersson <casper.casan@...il.com>,
Bjarni Jonasson <bjarni.jonasson@...rochip.com>,
Jakob Koschel <jakobkoschel@...il.com>,
Christophe JAILLET <christophe.jaillet@...adoo.fr>,
Michael Walle <michael@...le.cc>,
Jason Gunthorpe <jgg@...pe.ca>,
Colin Ian King <colin.king@...el.com>,
Arnd Bergmann <arnd@...db.de>,
Eric Dumazet <edumazet@...gle.com>,
Di Zhu <zhudi21@...wei.com>, Xu Wang <vulab@...as.ac.cn>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linuxppc-dev@...ts.ozlabs.org, bpf@...r.kernel.org,
Mike Rapoport <rppt@...nel.org>,
"Brian Johannesmeyer" <bjohannesmeyer@...il.com>,
Cristiano Giuffrida <c.giuffrida@...nl>,
"Bos, H.J." <h.j.bos@...nl>
Subject: [PATCH net-next v3 08/18] net: sparx5: Replace usage of found with dedicated list iterator variable
To move the list iterator variable into the list_for_each_entry_*()
macro in the future it should be avoided to use the list iterator
variable after the loop body.
To *never* use the list iterator variable after the loop it was
concluded to use a separate iterator variable instead of a
found boolean [1].
This removes the need to use a found variable and simply checking if
the variable was set, can determine if the break/goto was hit.
Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/ [1]
Signed-off-by: Jakob Koschel <jakobkoschel@...il.com>
---
.../microchip/sparx5/sparx5_mactable.c | 25 +++++++++----------
1 file changed, 12 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c b/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c
index a5837dbe0c7e..bb8d9ce79ac2 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c
@@ -362,8 +362,7 @@ static void sparx5_mact_handle_entry(struct sparx5 *sparx5,
unsigned char mac[ETH_ALEN],
u16 vid, u32 cfg2)
{
- struct sparx5_mact_entry *mact_entry;
- bool found = false;
+ struct sparx5_mact_entry *mact_entry = NULL, *iter;
u16 port;
if (LRN_MAC_ACCESS_CFG_2_MAC_ENTRY_ADDR_TYPE_GET(cfg2) !=
@@ -378,28 +377,28 @@ static void sparx5_mact_handle_entry(struct sparx5 *sparx5,
return;
mutex_lock(&sparx5->mact_lock);
- list_for_each_entry(mact_entry, &sparx5->mact_entries, list) {
- if (mact_entry->vid == vid &&
- ether_addr_equal(mac, mact_entry->mac)) {
- found = true;
- mact_entry->flags |= MAC_ENT_ALIVE;
- if (mact_entry->port != port) {
+ list_for_each_entry(iter, &sparx5->mact_entries, list) {
+ if (iter->vid == vid &&
+ ether_addr_equal(mac, iter->mac)) {
+ iter->flags |= MAC_ENT_ALIVE;
+ if (iter->port != port) {
dev_warn(sparx5->dev, "Entry move: %d -> %d\n",
- mact_entry->port, port);
- mact_entry->port = port;
- mact_entry->flags |= MAC_ENT_MOVED;
+ iter->port, port);
+ iter->port = port;
+ iter->flags |= MAC_ENT_MOVED;
}
/* Entry handled */
+ mact_entry = iter;
break;
}
}
mutex_unlock(&sparx5->mact_lock);
- if (found && !(mact_entry->flags & MAC_ENT_MOVED))
+ if (mact_entry && !(mact_entry->flags & MAC_ENT_MOVED))
/* Present, not moved */
return;
- if (!found) {
+ if (!mact_entry) {
/* Entry not found - now add */
mact_entry = alloc_mact_entry(sparx5, mac, vid, port);
if (!mact_entry)
--
2.25.1
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