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authorAlex Dubov <oakad@yahoo.com>2011-03-16 17:57:13 +0000
committerDavid S. Miller <davem@davemloft.net>2011-03-18 15:12:14 -0700
commit4363c2fddb1399b728ef21ee8101c148a311ea45 (patch)
tree5baa32b3a56277d2c1683bbfa3f8cce432908e37 /drivers/net/gianfar.h
parent99759619b27662d1290901228d77a293e6e83200 (diff)
downloadop-kernel-dev-4363c2fddb1399b728ef21ee8101c148a311ea45.zip
op-kernel-dev-4363c2fddb1399b728ef21ee8101c148a311ea45.tar.gz
gianfar: Fall back to software tcp/udp checksum on older controllers
As specified by errata eTSEC49 of MPC8548 and errata eTSEC12 of MPC83xx, older revisions of gianfar controllers will be unable to calculate a TCP/UDP packet checksum for some alignments of the appropriate FCB. This patch checks for FCB alignment on such controllers and falls back to software checksumming if the alignment is known to be bad. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/gianfar.h')
-rw-r--r--drivers/net/gianfar.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index 54de413..ec5d595 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -1039,6 +1039,7 @@ enum gfar_errata {
GFAR_ERRATA_74 = 0x01,
GFAR_ERRATA_76 = 0x02,
GFAR_ERRATA_A002 = 0x04,
+ GFAR_ERRATA_12 = 0x08, /* a.k.a errata eTSEC49 */
};
/* Struct stolen almost completely (and shamelessly) from the FCC enet source
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