netdev - [PATCH net-next 08/12] iavf: Refactor iavf_mac

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Date:   Wed, 24 Nov 2021 09:16:48 -0800
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     Jedrzej Jagielski <jedrzej.jagielski@...el.com>,
        netdev@...r.kernel.org, anthony.l.nguyen@...el.com,
        sassmann@...hat.com,
        Sylwester Dziedziuch <sylwesterx.dziedziuch@...el.com>,
        Konrad Jankowski <konrad0.jankowski@...el.com>
Subject: [PATCH net-next 08/12] iavf: Refactor iavf_mac_filter struct memory usage

From: Jedrzej Jagielski <jedrzej.jagielski@...el.com>

iavf_mac_filter struct contained couple boolean
flags using up more memory than is necessary.
Change the flags to be bitfields in an anonymous struct
so all the flags now fit in one byte.

Signed-off-by: Sylwester Dziedziuch <sylwesterx.dziedziuch@...el.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@...el.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/iavf/iavf.h | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf.h b/drivers/net/ethernet/intel/iavf/iavf.h
index 75635bd57cf6..526d424a439d 100644
--- a/drivers/net/ethernet/intel/iavf/iavf.h
+++ b/drivers/net/ethernet/intel/iavf/iavf.h
@@ -137,9 +137,13 @@ struct iavf_q_vector {
 struct iavf_mac_filter {
 	struct list_head list;
 	u8 macaddr[ETH_ALEN];
-	bool is_new_mac;	/* filter is new, wait for PF decision */
-	bool remove;		/* filter needs to be removed */
-	bool add;		/* filter needs to be added */
+	struct {
+		u8 is_new_mac:1;    /* filter is new, wait for PF decision */
+		u8 remove:1;        /* filter needs to be removed */
+		u8 add:1;           /* filter needs to be added */
+		u8 is_primary:1;    /* filter is a default VF MAC */
+		u8 padding:4;
+	};
 };
 
 struct iavf_vlan_filter {
-- 
2.31.1