netdev - [PATCH net-next v2 7/8] be2net: re-order fields in be_error

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Message-Id: <20180710205948.10574-8-cera@cera.cz>
Date:   Tue, 10 Jul 2018 22:59:47 +0200
From:   Ivan Vecera <cera@...a.cz>
To:     netdev@...r.kernel.org
Cc:     sathya.perla@...adcom.com, sriharsha.basavapatna@...adcom.com
Subject: [PATCH net-next v2 7/8] be2net: re-order fields in be_error_recovert to avoid hole

- Unionize two u8 fields where only one of them is used depending on NIC
chipset.
- Move recovery_supported field after that union

These changes eliminate 7-bytes hole in the struct and makes it smaller
by 8 bytes.

Signed-off-by: Ivan Vecera <cera@...a.cz>
---
 drivers/net/ethernet/emulex/benet/be.h | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h
index d521364e17cf..4f805be43180 100644
--- a/drivers/net/ethernet/emulex/benet/be.h
+++ b/drivers/net/ethernet/emulex/benet/be.h
@@ -522,11 +522,13 @@ enum {
 };
 
 struct be_error_recovery {
-	/* Lancer error recovery variables */
-	u8 recovery_retries;
+	union {
+		u8 recovery_retries;	/* used for Lancer		*/
+		u8 recovery_state;	/* used for BEx and Skyhawk	*/
+	};
 
 	/* BEx/Skyhawk error recovery variables */
-	u8 recovery_state;
+	bool recovery_supported;
 	u16 ue_to_reset_time;		/* Time after UE, to soft reset
 					 * the chip - PF0 only
 					 */
@@ -534,7 +536,6 @@ struct be_error_recovery {
 					 * of SLIPORT_SEMAPHORE reg
 					 */
 	u16 last_err_code;
-	bool recovery_supported;
 	unsigned long probe_time;
 	unsigned long last_recovery_time;
 
-- 
2.16.4