path: root/drivers/net/ethernet/realtek
diff options
authorTimo Teräs <timo.teras@iki.fi>2013-01-21 22:30:35 +0000
committerDavid S. Miller <davem@davemloft.net>2013-01-23 13:51:47 -0500
commit5d0feaff230c0abfe4a112e6f09f096ed99e0b2d (patch)
treea2df591cf1f7c781dfc57f9c3b2ef29520a1bd6c /drivers/net/ethernet/realtek
parentb8732fb7f8920e2f6216d2b67faf8b0b0d67ca81 (diff)
r8169: remove the obsolete and incorrect AMD workaround
This was introduced in commit 6dccd16 "r8169: merge with version 6.001.00 of Realtek's r8169 driver". I did not find the version 6.001.00 online, but in 6.002.00 or any later r8169 from Realtek this hunk is no longer present. Also commit 05af214 "r8169: fix Ethernet Hangup for RTL8110SC rev d" claims to have fixed this issue otherwise. The magic compare mask of 0xfffe000 is dubious as it masks parts of the Reserved part, and parts of the VLAN tag. But this does not make much sense as the VLAN tag parts are perfectly valid there. In matter of fact this seems to be triggered with any VLAN tagged packet as RxVlanTag bit is matched. I would suspect 0xfffe0000 was intended to test reserved part only. Finally, this hunk is evil as it can cause more packets to be handled than what was NAPI quota causing net/core/dev.c: net_rx_action(): WARN_ON_ONCE(work > weight) to trigger, and mess up the NAPI state causing device to hang. As result, any system using VLANs and having high receive traffic (so that NAPI poll budget limits rtl_rx) would result in device hang. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Acked-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/realtek')
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index ed96f309bca..c28bc318cec 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -6111,13 +6111,6 @@ process_pkt:
tp->rx_stats.bytes += pkt_size;
- /* Work around for AMD plateform. */
- if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
- (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
- desc->opts2 = 0;
- cur_rx++;
- }
count = cur_rx - tp->cur_rx;