From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mateusz Kulikowski Subject: [PATCH v2 1/2] checkpatch: suggest using ether_addr_equal*() Date: Mon, 20 Apr 2015 00:16:55 +0200 Message-ID: <1429481816-6664-2-git-send-email-mateusz.kulikowski@gmail.com> References: <1429481816-6664-1-git-send-email-mateusz.kulikowski@gmail.com> Cc: Mateusz Kulikowski , davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: joe@perches.com, apw@canonical.com Return-path: In-Reply-To: <1429481816-6664-1-git-send-email-mateusz.kulikowski@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Check if memcmp() is used to compare ethernet addresses and suggest using ether_addr_equal() or ether_addr_equal_unaligned() Signed-off-by: Mateusz Kulikowski --- scripts/checkpatch.pl | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 89b1df4..b9ea436 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -5035,6 +5035,13 @@ sub process { } } +# Check for memcmp(foo, bar, ETH_ALEN) that could be ether_addr_equal*(foo, bar) + if ($^V && $^V ge 5.10.0 && + $line =~ /^\+(?:.*?)\bmemcmp\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/s) { + WARN("PREFER_ETHER_ADDR_EQUAL", + "Prefer ether_addr_equal() or ether_addr_equal_unaligned() over memcmp()\n" . $herecurr) + } + # typecasts on min/max could be min_t/max_t if ($^V && $^V ge 5.10.0 && defined $stat && -- 1.8.4.1