From: Stephen Hemminger <shemminger@linux-foundation.org>
To: linas@austin.ibm.com (Linas Vepstas)
Cc: netdev@vger.kernel.org
Subject: [PATCH] spidernet: checksum and ethtool
Date: Thu, 7 Jun 2007 11:53:57 -0700 [thread overview]
Message-ID: <20070607115357.0ed8e15e@localhost.localdomain> (raw)
In-Reply-To: <20070607164511.GO28472@austin.ibm.com>
It doesn't look like spidernet hardware can really checksum all protocols,
the code looks like it does IPV4 only. If so, it should use NETIF_F_IP_CSUM
instead of NETIF_F_HW_CSUM.
The driver doesn't need it's own get/set for ethtool tx csum, and it
should use the standard ethtool_op_get_link.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
---
drivers/net/spider_net.c | 4 ++--
drivers/net/spider_net_ethtool.c | 21 +++------------------
2 files changed, 5 insertions(+), 20 deletions(-)
--- a/drivers/net/spider_net.c 2007-06-07 11:52:17.000000000 -0700
+++ b/drivers/net/spider_net.c 2007-06-07 11:52:23.000000000 -0700
@@ -720,7 +720,7 @@ spider_net_prepare_tx_descr(struct spide
SPIDER_NET_DESCR_CARDOWNED | SPIDER_NET_DMAC_NOCS;
spin_unlock_irqrestore(&chain->lock, flags);
- if (skb->protocol == htons(ETH_P_IP) && skb->ip_summed == CHECKSUM_PARTIAL)
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
switch (ip_hdr(skb)->protocol) {
case IPPROTO_TCP:
hwdescr->dmac_cmd_status |= SPIDER_NET_DMAC_TCP;
@@ -2246,7 +2246,7 @@ spider_net_setup_netdev(struct spider_ne
spider_net_setup_netdev_ops(netdev);
- netdev->features = NETIF_F_HW_CSUM | NETIF_F_LLTX;
+ netdev->features = NETIF_F_IP_CSUM | NETIF_F_LLTX;
/* some time: NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
* NETIF_F_HW_VLAN_FILTER */
--- a/drivers/net/spider_net_ethtool.c 2007-06-04 13:34:27.000000000 -0700
+++ b/drivers/net/spider_net_ethtool.c 2007-06-07 11:52:23.000000000 -0700
@@ -134,22 +134,6 @@ spider_net_ethtool_set_rx_csum(struct ne
return 0;
}
-static uint32_t
-spider_net_ethtool_get_tx_csum(struct net_device *netdev)
-{
- return (netdev->features & NETIF_F_HW_CSUM) != 0;
-}
-
-static int
-spider_net_ethtool_set_tx_csum(struct net_device *netdev, uint32_t data)
-{
- if (data)
- netdev->features |= NETIF_F_HW_CSUM;
- else
- netdev->features &= ~NETIF_F_HW_CSUM;
-
- return 0;
-}
static void
spider_net_ethtool_get_ringparam(struct net_device *netdev,
@@ -200,11 +184,12 @@ const struct ethtool_ops spider_net_etht
.get_wol = spider_net_ethtool_get_wol,
.get_msglevel = spider_net_ethtool_get_msglevel,
.set_msglevel = spider_net_ethtool_set_msglevel,
+ .get_link = ethtool_op_get_link,
.nway_reset = spider_net_ethtool_nway_reset,
.get_rx_csum = spider_net_ethtool_get_rx_csum,
.set_rx_csum = spider_net_ethtool_set_rx_csum,
- .get_tx_csum = spider_net_ethtool_get_tx_csum,
- .set_tx_csum = spider_net_ethtool_set_tx_csum,
+ .get_tx_csum = ethtool_op_get_tx_csum,
+ .set_tx_csum = ethtool_op_set_tx_csum,
.get_ringparam = spider_net_ethtool_get_ringparam,
.get_strings = spider_net_get_strings,
.get_stats_count = spider_net_get_stats_count,
prev parent reply other threads:[~2007-06-07 18:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-30 0:24 [PATCH] spidernet: checksum and ethtool Stephen Hemminger
2007-06-01 23:06 ` Linas Vepstas
2007-06-07 16:45 ` Linas Vepstas
2007-06-07 18:53 ` Stephen Hemminger [this message]
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