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gianfar: Don't enable RX Filer if not supported

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After commit 15bf176db1 ("gianfar: Don't enable the Filer w/o the
Parser"), 'TSEC' model controllers (for example as seen on MPC8541E)
always have 8 bytes stripped from the front of received frames.
Only 'eTSEC' gianfar controllers have the RX Filer capability (amongst
other enhancements). Previously this was treated as always enabled
for both 'TSEC' and 'eTSEC' controllers.
In commit 15bf176db1 ("gianfar: Don't enable the Filer w/o the Parser")
a subtle change was made to the setting of 'uses_rxfcb' to effectively
always set it (since 'rx_filer_enable' was always true). This had the
side-effect of always stripping 8 bytes from the front of received frames
on 'TSEC' type controllers.

We now only enable the RX Filer capability on controller types that
support it, thereby avoiding the issue for 'TSEC' type controllers.

Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Reviewed-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hamish Martin 2015-12-15 14:14:50 +13:00 committed by David S. Miller
parent 7bbadd2d10
commit 7bff47da1e
2 changed files with 6 additions and 3 deletions
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8
drivers/net/ethernet/freescale/gianfar.c
View File

@ -894,7 +894,8 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
FSL_GIANFAR_DEV_HAS_VLAN |
FSL_GIANFAR_DEV_HAS_MAGIC_PACKET |
FSL_GIANFAR_DEV_HAS_EXTENDED_HASH |
FSL_GIANFAR_DEV_HAS_TIMER;
FSL_GIANFAR_DEV_HAS_TIMER |
FSL_GIANFAR_DEV_HAS_RX_FILER;
err = of_property_read_string(np, "phy-connection-type", &ctype);
@ -1396,8 +1397,9 @@ static int gfar_probe(struct platform_device *ofdev)
priv->rx_queue[i]->rxic = DEFAULT_RXIC;
}
/* always enable rx filer */
priv->rx_filer_enable = 1;
/* Always enable rx filer if available */
priv->rx_filer_enable =
(priv->device_flags & FSL_GIANFAR_DEV_HAS_RX_FILER) ? 1 : 0;
/* Enable most messages by default */
priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1;
/* use pritority h/w tx queue scheduling for single queue devices */

1
drivers/net/ethernet/freescale/gianfar.h
View File

@ -923,6 +923,7 @@ struct gfar {
#define FSL_GIANFAR_DEV_HAS_BUF_STASHING 0x00000400
#define FSL_GIANFAR_DEV_HAS_TIMER 0x00000800
#define FSL_GIANFAR_DEV_HAS_WAKE_ON_FILER 0x00001000
#define FSL_GIANFAR_DEV_HAS_RX_FILER 0x00002000
#if (MAXGROUPS == 2)
#define DEFAULT_MAPPING 0xAA