[git patches] net driver fixes

From: Jeff Garzik
Date: Wed Sep 13 2006 - 12:27:59 EST

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Please pull from 'upstream-linus' branch of
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6.git upstream-linus

to receive the following updates:

drivers/net/e1000/e1000_main.c | 8 ++--
drivers/net/mv643xx_eth.c | 2 +
drivers/net/wireless/zd1211rw/zd_chip.c | 61 ++++++++++++++++++++++++--------
drivers/net/wireless/zd1211rw/zd_mac.c | 43 ++++++++++++++++++----
drivers/net/wireless/zd1211rw/zd_mac.h | 11 +++--
5 files changed, 94 insertions(+), 31 deletions(-)

Auke Kok:
e1000: fix TX timout hang regression for 82542rev3

Dale Farnsworth:
mv643xx_eth: Unmap DMA buffers in receive path

Ulrich Kunitz:
zd1211rw: Fix of signal strength and quality measurement

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 726f43d..98ef9f8 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -1433,8 +1433,8 @@ e1000_configure_tx(struct e1000_adapter
E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
E1000_WRITE_REG(hw, TDT, 0);
E1000_WRITE_REG(hw, TDH, 0);
- adapter->tx_ring[0].tdh = E1000_TDH;
- adapter->tx_ring[0].tdt = E1000_TDT;
+ adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
+ adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
break;
}

@@ -1840,8 +1840,8 @@ #endif
E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL));
E1000_WRITE_REG(hw, RDT, 0);
E1000_WRITE_REG(hw, RDH, 0);
- adapter->rx_ring[0].rdh = E1000_RDH;
- adapter->rx_ring[0].rdt = E1000_RDT;
+ adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
+ adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
break;
}

diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 760c61b..eeab1df 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -385,6 +385,8 @@ static int mv643xx_eth_receive_queue(str
struct pkt_info pkt_info;

while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) {
+ dma_unmap_single(NULL, pkt_info.buf_ptr, RX_SKB_SIZE,
+ DMA_FROM_DEVICE);
mp->rx_desc_count--;
received_packets++;

diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c
index da9d06b..aa79282 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.c
+++ b/drivers/net/wireless/zd1211rw/zd_chip.c
@@ -1430,9 +1430,43 @@ static int ofdm_qual_db(u8 status_qualit
break;
}

+ switch (rate) {
+ case ZD_OFDM_RATE_6M:
+ case ZD_OFDM_RATE_9M:
+ i += 3;
+ break;
+ case ZD_OFDM_RATE_12M:
+ case ZD_OFDM_RATE_18M:
+ i += 5;
+ break;
+ case ZD_OFDM_RATE_24M:
+ case ZD_OFDM_RATE_36M:
+ i += 9;
+ break;
+ case ZD_OFDM_RATE_48M:
+ case ZD_OFDM_RATE_54M:
+ i += 15;
+ break;
+ default:
+ return -EINVAL;
+ }
+
return i;
}

+static int ofdm_qual_percent(u8 status_quality, u8 rate, unsigned int size)
+{
+ int r;
+
+ r = ofdm_qual_db(status_quality, rate, size);
+ ZD_ASSERT(r >= 0);
+ if (r < 0)
+ r = 0;
+
+ r = (r * 100)/29;
+ return r <= 100 ? r : 100;
+}
+
static unsigned int log10times100(unsigned int x)
{
static const u8 log10[] = {
@@ -1476,31 +1510,28 @@ static int cck_snr_db(u8 status_quality)
return r;
}

-static int rx_qual_db(const void *rx_frame, unsigned int size,
- const struct rx_status *status)
+static int cck_qual_percent(u8 status_quality)
{
- return (status->frame_status&ZD_RX_OFDM) ?
- ofdm_qual_db(status->signal_quality_ofdm,
- zd_ofdm_plcp_header_rate(rx_frame),
- size) :
- cck_snr_db(status->signal_quality_cck);
+ int r;
+
+ r = cck_snr_db(status_quality);
+ r = (100*r)/17;
+ return r <= 100 ? r : 100;
}

u8 zd_rx_qual_percent(const void *rx_frame, unsigned int size,
const struct rx_status *status)
{
- int r = rx_qual_db(rx_frame, size, status);
- if (r < 0)
- r = 0;
- r = (r * 100) / 14;
- if (r > 100)
- r = 100;
- return r;
+ return (status->frame_status&ZD_RX_OFDM) ?
+ ofdm_qual_percent(status->signal_quality_ofdm,
+ zd_ofdm_plcp_header_rate(rx_frame),
+ size) :
+ cck_qual_percent(status->signal_quality_cck);
}

u8 zd_rx_strength_percent(u8 rssi)
{
- int r = (rssi*100) / 30;
+ int r = (rssi*100) / 41;
if (r > 100)
r = 100;
return (u8) r;
diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index d6f3e02..a9bd80a 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -816,13 +816,25 @@ static int filter_rx(struct ieee80211_de
return -EINVAL;
}

-static void update_qual_rssi(struct zd_mac *mac, u8 qual_percent, u8 rssi)
+static void update_qual_rssi(struct zd_mac *mac,
+ const u8 *buffer, unsigned int length,
+ u8 qual_percent, u8 rssi_percent)
{
unsigned long flags;
+ struct ieee80211_hdr_3addr *hdr;
+ int i;
+
+ hdr = (struct ieee80211_hdr_3addr *)buffer;
+ if (length < offsetof(struct ieee80211_hdr_3addr, addr3))
+ return;
+ if (memcmp(hdr->addr2, zd_mac_to_ieee80211(mac)->bssid, ETH_ALEN) != 0)
+ return;

spin_lock_irqsave(&mac->lock, flags);
- mac->qual_average = (7 * mac->qual_average + qual_percent) / 8;
- mac->rssi_average = (7 * mac->rssi_average + rssi) / 8;
+ i = mac->stats_count % ZD_MAC_STATS_BUFFER_SIZE;
+ mac->qual_buffer[i] = qual_percent;
+ mac->rssi_buffer[i] = rssi_percent;
+ mac->stats_count++;
spin_unlock_irqrestore(&mac->lock, flags);
}

@@ -853,7 +865,6 @@ static int fill_rx_stats(struct ieee8021
if (stats->rate)
stats->mask |= IEEE80211_STATMASK_RATE;

- update_qual_rssi(mac, stats->signal, stats->rssi);
return 0;
}

@@ -877,6 +888,8 @@ int zd_mac_rx(struct zd_mac *mac, const
sizeof(struct rx_status);
buffer += ZD_PLCP_HEADER_SIZE;

+ update_qual_rssi(mac, buffer, length, stats.signal, stats.rssi);
+
r = filter_rx(ieee, buffer, length, &stats);
if (r <= 0)
return r;
@@ -981,17 +994,31 @@ struct iw_statistics *zd_mac_get_wireles
{
struct zd_mac *mac = zd_netdev_mac(ndev);
struct iw_statistics *iw_stats = &mac->iw_stats;
+ unsigned int i, count, qual_total, rssi_total;

memset(iw_stats, 0, sizeof(struct iw_statistics));
/* We are not setting the status, because ieee->state is not updated
* at all and this driver doesn't track authentication state.
*/
spin_lock_irq(&mac->lock);
- iw_stats->qual.qual = mac->qual_average;
- iw_stats->qual.level = mac->rssi_average;
- iw_stats->qual.updated = IW_QUAL_QUAL_UPDATED|IW_QUAL_LEVEL_UPDATED|
- IW_QUAL_NOISE_INVALID;
+ count = mac->stats_count < ZD_MAC_STATS_BUFFER_SIZE ?
+ mac->stats_count : ZD_MAC_STATS_BUFFER_SIZE;
+ qual_total = rssi_total = 0;
+ for (i = 0; i < count; i++) {
+ qual_total += mac->qual_buffer[i];
+ rssi_total += mac->rssi_buffer[i];
+ }
spin_unlock_irq(&mac->lock);
+ iw_stats->qual.updated = IW_QUAL_NOISE_INVALID;
+ if (count > 0) {
+ iw_stats->qual.qual = qual_total / count;
+ iw_stats->qual.level = rssi_total / count;
+ iw_stats->qual.updated |=
+ IW_QUAL_QUAL_UPDATED|IW_QUAL_LEVEL_UPDATED;
+ } else {
+ iw_stats->qual.updated |=
+ IW_QUAL_QUAL_INVALID|IW_QUAL_LEVEL_INVALID;
+ }
/* TODO: update counter */
return iw_stats;
}
diff --git a/drivers/net/wireless/zd1211rw/zd_mac.h b/drivers/net/wireless/zd1211rw/zd_mac.h
index 71e382c..b3ba49b 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.h
+++ b/drivers/net/wireless/zd1211rw/zd_mac.h
@@ -1,4 +1,4 @@
-/* zd_mac.c
+/* zd_mac.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -87,9 +87,9 @@ struct rx_length_info {
#define RX_LENGTH_INFO_TAG 0x697e

struct rx_status {
+ u8 signal_quality_cck;
/* rssi */
u8 signal_strength;
- u8 signal_quality_cck;
u8 signal_quality_ofdm;
u8 decryption_type;
u8 frame_status;
@@ -120,14 +120,17 @@ enum mac_flags {
MAC_FIXED_CHANNEL = 0x01,
};

+#define ZD_MAC_STATS_BUFFER_SIZE 16
+
struct zd_mac {
struct net_device *netdev;
struct zd_chip chip;
spinlock_t lock;
/* Unlocked reading possible */
struct iw_statistics iw_stats;
- u8 qual_average;
- u8 rssi_average;
+ unsigned int stats_count;
+ u8 qual_buffer[ZD_MAC_STATS_BUFFER_SIZE];
+ u8 rssi_buffer[ZD_MAC_STATS_BUFFER_SIZE];
u8 regdomain;
u8 default_regdomain;
u8 requested_channel;
-
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Next message: Matthew Wilcox: "Re: [PATCH 4/6] Implement a general log2 facility in the kernel"
Previous message: Patrick McHardy: "Re: [PATCH] EtherIP tunnel driver (RFC 3378)"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]