linux-kernel - [PATCH v3 net-next 07/15] net: sgi: ioc3-eth: separate tx and rx ring handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190830092539.24550-8-tbogendoerfer@suse.de>
Date:   Fri, 30 Aug 2019 11:25:30 +0200
From:   Thomas Bogendoerfer <tbogendoerfer@...e.de>
To:     Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [PATCH v3 net-next 07/15] net: sgi: ioc3-eth: separate tx and rx ring handling

After allocation of descriptor memory is now done once in probe
handling of tx ring is completely done by ioc3_clean_tx_ring. So
we remove the remaining tx ring actions out of ioc3_alloc_rings
and ioc3_free_rings and rename it to ioc3_[alloc|free]_rx_bufs
to better describe what they are doing.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@...e.de>
---
 drivers/net/ethernet/sgi/ioc3-eth.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index fe77e4d7732f..29b9e5098052 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -778,12 +778,10 @@ static inline void ioc3_clean_tx_ring(struct ioc3_private *ip)
 	ip->tx_ci = 0;
 }
 
-static void ioc3_free_rings(struct ioc3_private *ip)
+static void ioc3_free_rx_bufs(struct ioc3_private *ip)
 {
 	int rx_entry, n_entry;
 
-	ioc3_clean_tx_ring(ip);
-
 	n_entry = ip->rx_ci;
 	rx_entry = ip->rx_pi;
 
@@ -794,7 +792,7 @@ static void ioc3_free_rings(struct ioc3_private *ip)
 	}
 }
 
-static void ioc3_alloc_rings(struct net_device *dev)
+static void ioc3_alloc_rx_bufs(struct net_device *dev)
 {
 	struct ioc3_private *ip = netdev_priv(dev);
 	struct ioc3_erxbuf *rxb;
@@ -824,9 +822,6 @@ static void ioc3_alloc_rings(struct net_device *dev)
 	}
 	ip->rx_ci = 0;
 	ip->rx_pi = RX_BUFFS;
-
-	ip->tx_pi = 0;
-	ip->tx_ci = 0;
 }
 
 static void ioc3_init_rings(struct net_device *dev)
@@ -835,8 +830,8 @@ static void ioc3_init_rings(struct net_device *dev)
 	struct ioc3_ethregs *regs = ip->regs;
 	unsigned long ring;
 
-	ioc3_free_rings(ip);
-	ioc3_alloc_rings(dev);
+	ioc3_free_rx_bufs(ip);
+	ioc3_alloc_rx_bufs(dev);
 
 	ioc3_clean_tx_ring(ip);
 
@@ -962,7 +957,9 @@ static int ioc3_close(struct net_device *dev)
 	ioc3_stop(ip);
 	free_irq(dev->irq, dev);
 
-	ioc3_free_rings(ip);
+	ioc3_free_rx_bufs(ip);
+	ioc3_clean_tx_ring(ip);
+
 	return 0;
 }
 
@@ -1263,12 +1260,11 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 out_stop:
 	ioc3_stop(ip);
 	del_timer_sync(&ip->ioc3_timer);
-	ioc3_free_rings(ip);
+	ioc3_free_rx_bufs(ip);
 	if (ip->rxr)
 		free_page((unsigned long)ip->rxr);
 	if (ip->txr)
 		free_pages((unsigned long)ip->txr, 2);
-	kfree(ip->txr);
 out_res:
 	pci_release_regions(pdev);
 out_free:
-- 
2.13.7