From: jacliburn@bellsouth.net
To: jeff@garzik.org
Cc: csnook@redhat.com, linux-kernel@vger.kernel.org,
atl1-devel@lists.sourceforge.net,
Jay Cliburn <jacliburn@bellsouth.net>
Subject: [PATCH 20/26] atl1: update change mtu
Date: Mon, 31 Dec 2007 19:59:58 -0600 [thread overview]
Message-ID: <1199152804-3889-21-git-send-email-jacliburn@bellsouth.net> (raw)
In-Reply-To: <1199152804-3889-1-git-send-email-jacliburn@bellsouth.net>
From: Jay Cliburn <jacliburn@bellsouth.net>
Update atl1_change_mtu() to conform with the current vendor driver version
1.2.40.2.
Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
---
drivers/net/atlx/atl1.c | 39 ++++++++++++++++++++++-----------------
1 files changed, 22 insertions(+), 17 deletions(-)
diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
index 972de34..7d84a51 100644
--- a/drivers/net/atlx/atl1.c
+++ b/drivers/net/atlx/atl1.c
@@ -2438,32 +2438,37 @@ static void atl1_reset_task(struct work_struct *work)
* atl1_change_mtu - Change the Maximum Transfer Unit
* @netdev: network interface device structure
* @new_mtu: new value for maximum frame size
- *
- * Returns 0 on success, negative on failure
*/
static int atl1_change_mtu(struct net_device *netdev, int new_mtu)
{
struct atl1_adapter *adapter = netdev_priv(netdev);
- int old_mtu = netdev->mtu;
- int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
+ struct atl1_hw *hw = &adapter->hw;
- if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
- (max_frame > MAX_JUMBO_FRAME_SIZE)) {
- dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
+ if ((new_mtu < 40) || (new_mtu > (ETH_DATA_LEN + VLAN_HLEN)))
return -EINVAL;
- }
- adapter->hw.max_frame_size = max_frame;
- adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
- adapter->rx_buffer_len = (max_frame + 7) & ~7;
- adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
+ if (hw->max_frame_size != new_mtu) {
+ while (test_and_set_bit(__ATL1_RESETTING, &adapter->flags))
+ msleep(1);
- netdev->mtu = new_mtu;
- if ((old_mtu != new_mtu) && netif_running(netdev)) {
- atl1_down(adapter);
- atl1_up(adapter);
- }
+ if (netif_running(netdev))
+ atl1_down(adapter);
+
+ netdev->mtu = new_mtu;
+ adapter->hw.max_frame_size = new_mtu;
+ adapter->hw.tx_jumbo_task_th = (new_mtu + ETH_HLEN +
+ ETH_FCS_LEN + VLAN_HLEN + 7) >> 3;
+ adapter->rx_buffer_len = (new_mtu + ETH_HLEN +
+ ETH_FCS_LEN + VLAN_HLEN + 7) & ~7;
+ adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
+ if (netif_running(netdev))
+ atl1_up(adapter);
+ else
+ atl1_reset(adapter);
+
+ clear_bit(__ATL1_RESETTING, &adapter->flags);
+ }
return 0;
}
--
1.5.3.3
next prev parent reply other threads:[~2008-01-01 2:13 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-01 1:59 [PATCH 00/26] atl1: divide and modernize jacliburn
2008-01-01 1:59 ` [PATCH 01/26] atl1: relocate atl1 driver to /drivers/net/atlx jacliburn
2008-01-01 1:59 ` [PATCH 02/26] atl1: move common functions to atlx files jacliburn
2008-01-01 1:59 ` [PATCH 03/26] atl1: fix broken TSO jacliburn
2008-01-01 1:59 ` [PATCH 04/26] atl1: add ethtool register dump jacliburn
2008-01-22 9:54 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 05/26] atl1: print debug info if rrd error jacliburn
2008-01-22 9:55 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 06/26] atl1: update initialization parameters jacliburn
2008-01-22 9:56 ` Jeff Garzik
2008-01-23 2:13 ` Jay Cliburn
2008-01-23 2:19 ` Jeff Garzik
2008-01-23 2:30 ` Chris Snook
2008-01-01 1:59 ` [PATCH 07/26] atl1: clarify max rx frame size jacliburn
2008-01-01 1:59 ` [PATCH 08/26] atl1: additional DMA engine configuration jacliburn
2008-01-01 1:59 ` [PATCH 09/26] atl1: refactor tx processing jacliburn
2008-01-22 9:58 ` Jeff Garzik
2008-01-23 0:31 ` Jay Cliburn
2008-01-25 1:00 ` Jay Cliburn
2008-01-25 1:08 ` Chris Snook
2008-01-25 3:01 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 10/26] atl1: use csum_start jacliburn
2008-01-01 1:59 ` [PATCH 11/26] atl1: refactor initialization and startup jacliburn
2008-01-01 1:59 ` [PATCH 12/26] atl1: refactor atl1_probe jacliburn
2008-01-01 1:59 ` [PATCH 13/26] atl1: refactor interrupt handling jacliburn
2008-01-22 9:59 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 14/26] atl1: move stray defines to header file jacliburn
2008-01-01 1:59 ` [PATCH 15/26] atl1: tidy up ring management jacliburn
2008-01-01 1:59 ` [PATCH 16/26] atl1: modernize check link function jacliburn
2008-01-01 1:59 ` [PATCH 17/26] atl1: update phy config function jacliburn
2008-01-01 1:59 ` [PATCH 18/26] atl1: make function static jacliburn
2008-01-01 1:59 ` [PATCH 19/26] atl1: modernize down/up functions jacliburn
2008-01-22 10:01 ` Jeff Garzik
2008-01-01 1:59 ` jacliburn [this message]
2008-01-01 1:59 ` [PATCH 21/26] atl1: update atl1_close jacliburn
2008-01-01 2:00 ` [PATCH 22/26] atl1: update netpoll jacliburn
2008-01-01 2:00 ` [PATCH 23/26] atl1: update shutdown and remove functions jacliburn
2008-01-01 2:00 ` [PATCH 24/26] atl1: update wake-on-lan jacliburn
2008-01-01 2:00 ` [PATCH 25/26] atl1: add NAPI support jacliburn
2008-01-01 6:09 ` Joonwoo Park
2008-01-01 18:15 ` [PATCH 25/26] [REVISED] " Jay Cliburn
2008-01-02 2:56 ` Joonwoo Park
2008-01-02 3:07 ` David Miller
2008-01-01 2:00 ` [PATCH 26/26] atl1: remove experimental tag and clean up comments jacliburn
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