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authorSivakumar Subramani <Sivakumar.Subramani@neterion.com>2007-02-24 01:59:39 -0500
committerJeff Garzik <jeff@garzik.org>2007-02-27 04:27:11 -0500
commit926930b202d56c3dfb6aea0a0c6bfba2b87a8c03 (patch)
treef90a836770fbed53e8291b21c242d7addd3e6b28
parent9fc93a41a1ad11da128f37e60cac01b67990cfb4 (diff)
downloadconfigs-926930b202d56c3dfb6aea0a0c6bfba2b87a8c03.tar.gz
S2IO: Added a loadable parameter to enable or disable vlan stripping in frame.
- Added code to not to strip vlan tag when driver is in promiscuous mode - Added module loadable parameter 'vlan_tag_strip" through which user can enable or disable vlan stripping irrespective of mode ( promiscuous or non-promiscuous ). Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/s2io-regs.h1
-rw-r--r--drivers/net/s2io.c38
-rw-r--r--drivers/net/s2io.h3
3 files changed, 40 insertions, 2 deletions
diff --git a/drivers/net/s2io-regs.h b/drivers/net/s2io-regs.h
index 0e345cbc2bf..33fb7f3b704 100644
--- a/drivers/net/s2io-regs.h
+++ b/drivers/net/s2io-regs.h
@@ -430,6 +430,7 @@ struct XENA_dev_config {
#define TX_PA_CFG_IGNORE_SNAP_OUI BIT(2)
#define TX_PA_CFG_IGNORE_LLC_CTRL BIT(3)
#define TX_PA_CFG_IGNORE_L2_ERR BIT(6)
+#define RX_PA_CFG_STRIP_VLAN_TAG BIT(15)
/* Recent add, used only debug purposes. */
u64 pcc_enable;
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index cdf36745bb7..89881aa2fc3 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -42,6 +42,14 @@
* Possible values '1' for enable '0' for disable. Default is '0'
* lro_max_pkts: This parameter defines maximum number of packets can be
* aggregated as a single large packet
+ * napi: This parameter used to enable/disable NAPI (polling Rx)
+ * Possible values '1' for enable and '0' for disable. Default is '1'
+ * ufo: This parameter used to enable/disable UDP Fragmentation Offload(UFO)
+ * Possible values '1' for enable and '0' for disable. Default is '0'
+ * vlan_tag_strip: This can be used to enable or disable vlan stripping.
+ * Possible values '1' for enable , '0' for disable.
+ * Default is '2' - which means disable in promisc mode
+ * and enable in non-promiscuous mode.
************************************************************************/
#include <linux/module.h>
@@ -293,6 +301,9 @@ static void s2io_vlan_rx_register(struct net_device *dev,
spin_unlock_irqrestore(&nic->tx_lock, flags);
}
+/* A flag indicating whether 'RX_PA_CFG_STRIP_VLAN_TAG' bit is set or not */
+int vlan_strip_flag;
+
/* Unregister the vlan */
static void s2io_vlan_rx_kill_vid(struct net_device *dev, unsigned long vid)
{
@@ -404,6 +415,7 @@ S2IO_PARM_INT(indicate_max_pkts, 0);
S2IO_PARM_INT(napi, 1);
S2IO_PARM_INT(ufo, 0);
+S2IO_PARM_INT(vlan_tag_strip, NO_STRIP_IN_PROMISC);
static unsigned int tx_fifo_len[MAX_TX_FIFOS] =
{DEFAULT_FIFO_0_LEN, [1 ...(MAX_TX_FIFOS - 1)] = DEFAULT_FIFO_1_7_LEN};
@@ -1371,7 +1383,7 @@ static int init_nic(struct s2io_nic *nic)
&bar0->rts_frm_len_n[i]);
}
}
-
+
/* Disable differentiated services steering logic */
for (i = 0; i < 64; i++) {
if (rts_ds_steer(nic, i, 0) == FAILURE) {
@@ -1953,6 +1965,13 @@ static int start_nic(struct s2io_nic *nic)
writeq(val64, &bar0->rx_pa_cfg);
}
+ if (vlan_tag_strip == 0) {
+ val64 = readq(&bar0->rx_pa_cfg);
+ val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
+ writeq(val64, &bar0->rx_pa_cfg);
+ vlan_strip_flag = 0;
+ }
+
/*
* Enabling MC-RLDRAM. After enabling the device, we timeout
* for around 100ms, which is approximately the time required
@@ -4352,6 +4371,13 @@ static void s2io_set_multicast(struct net_device *dev)
writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
writel((u32) (val64 >> 32), (add + 4));
+ if (vlan_tag_strip != 1) {
+ val64 = readq(&bar0->rx_pa_cfg);
+ val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
+ writeq(val64, &bar0->rx_pa_cfg);
+ vlan_strip_flag = 0;
+ }
+
val64 = readq(&bar0->mac_cfg);
sp->promisc_flg = 1;
DBG_PRINT(INFO_DBG, "%s: entered promiscuous mode\n",
@@ -4367,6 +4393,13 @@ static void s2io_set_multicast(struct net_device *dev)
writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
writel((u32) (val64 >> 32), (add + 4));
+ if (vlan_tag_strip != 0) {
+ val64 = readq(&bar0->rx_pa_cfg);
+ val64 |= RX_PA_CFG_STRIP_VLAN_TAG;
+ writeq(val64, &bar0->rx_pa_cfg);
+ vlan_strip_flag = 1;
+ }
+
val64 = readq(&bar0->mac_cfg);
sp->promisc_flg = 0;
DBG_PRINT(INFO_DBG, "%s: left promiscuous mode\n",
@@ -6614,7 +6647,8 @@ static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
if (!sp->lro) {
skb->protocol = eth_type_trans(skb, dev);
- if (sp->vlgrp && RXD_GET_VLAN_TAG(rxdp->Control_2)) {
+ if ((sp->vlgrp && RXD_GET_VLAN_TAG(rxdp->Control_2) &&
+ vlan_strip_flag)) {
/* Queueing the vlan frame to the upper layer */
if (napi)
vlan_hwaccel_receive_skb(skb, sp->vlgrp,
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index d23a50f3b70..803137ca4b6 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -297,6 +297,9 @@ struct stat_block {
struct xpakStat xpak_stat;
};
+/* Default value for 'vlan_strip_tag' configuration parameter */
+#define NO_STRIP_IN_PROMISC 2
+
/*
* Structures representing different init time configuration
* parameters of the NIC.