| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Sun, 6 Jul 2008 23:44:03 +0200
From: Francois Romieu <romieu@...zoreil.com>
To: Jiri Bohac <jbohac@...e.cz>
Cc: David Miller <davem@...emloft.net>, jeff@...zik.org,
netdev@...r.kernel.org
Subject: [PATCH 3/3] amd8111e: delete non NAPI code from the driver.
Compile-tested only.
Signed-off-by: Francois Romieu <romieu@...zoreil.com>
Cc: Jiri Bohac <jbohac@...e.cz>
---
arch/mips/configs/mtx1_defconfig | 1 -
arch/powerpc/configs/maple_defconfig | 1 -
arch/x86/configs/x86_64_defconfig | 1 -
drivers/net/Kconfig | 14 ----
drivers/net/amd8111e.c | 137 ++--------------------------------
5 files changed, 7 insertions(+), 147 deletions(-)
diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig
index 6449635..636c517 100644
--- a/arch/mips/configs/mtx1_defconfig
+++ b/arch/mips/configs/mtx1_defconfig
@@ -1261,7 +1261,6 @@ CONFIG_NET_PCI=y
CONFIG_PCNET32=m
# CONFIG_PCNET32_NAPI is not set
CONFIG_AMD8111_ETH=m
-# CONFIG_AMD8111E_NAPI is not set
CONFIG_ADAPTEC_STARFIRE=m
CONFIG_B44=m
CONFIG_FORCEDETH=m
diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig
index 7a166a3..9415c16 100644
--- a/arch/powerpc/configs/maple_defconfig
+++ b/arch/powerpc/configs/maple_defconfig
@@ -587,7 +587,6 @@ CONFIG_MII=y
CONFIG_NET_PCI=y
# CONFIG_PCNET32 is not set
CONFIG_AMD8111_ETH=y
-# CONFIG_AMD8111E_NAPI is not set
# CONFIG_ADAPTEC_STARFIRE is not set
# CONFIG_B44 is not set
# CONFIG_FORCEDETH is not set
diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig
index c88a85a..3114453 100644
--- a/arch/x86/configs/x86_64_defconfig
+++ b/arch/x86/configs/x86_64_defconfig
@@ -712,7 +712,6 @@ CONFIG_TULIP=y
CONFIG_NET_PCI=y
# CONFIG_PCNET32 is not set
CONFIG_AMD8111_ETH=y
-# CONFIG_AMD8111E_NAPI is not set
# CONFIG_ADAPTEC_STARFIRE is not set
CONFIG_B44=y
CONFIG_FORCEDETH=y
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 9255895..5717da9 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1286,20 +1286,6 @@ config AMD8111_ETH
To compile this driver as a module, choose M here. The module
will be called amd8111e.
-config AMD8111E_NAPI
- bool "Use RX polling (NAPI)"
- depends on AMD8111_ETH
- help
- NAPI is a new driver API designed to reduce CPU and interrupt load
- when the driver is receiving lots of packets from the card. It is
- still somewhat experimental and thus not yet enabled by default.
-
- If your estimated Rx load is 10kpps or more, or if the card will be
- deployed on potentially unfriendly networks (e.g. in a firewall),
- then say Y here.
-
- If in doubt, say N.
-
config ADAPTEC_STARFIRE
tristate "Adaptec Starfire/DuraLAN support"
depends on NET_PCI && PCI
diff --git a/drivers/net/amd8111e.c b/drivers/net/amd8111e.c
index 85f7276..c54967f 100644
--- a/drivers/net/amd8111e.c
+++ b/drivers/net/amd8111e.c
@@ -101,9 +101,9 @@ Revision History:
#include "amd8111e.h"
#define MODULE_NAME "amd8111e"
-#define MODULE_VERS "3.0.6"
+#define MODULE_VERS "3.0.7"
MODULE_AUTHOR("Advanced Micro Devices, Inc.");
-MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version 3.0.6");
+MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version "MODULE_VERS);
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
module_param_array(speed_duplex, int, NULL, 0);
@@ -671,11 +671,7 @@ This is the receive indication function for packets with vlan tag.
*/
static int amd8111e_vlan_rx(struct amd8111e_priv *lp, struct sk_buff *skb, u16 vlan_tag)
{
-#ifdef CONFIG_AMD8111E_NAPI
return vlan_hwaccel_receive_skb(skb, lp->vlgrp,vlan_tag);
-#else
- return vlan_hwaccel_rx(skb, lp->vlgrp, vlan_tag);
-#endif /* CONFIG_AMD8111E_NAPI */
}
#endif
@@ -722,7 +718,6 @@ static int amd8111e_tx(struct net_device *dev)
return 0;
}
-#ifdef CONFIG_AMD8111E_NAPI
/* This function handles the driver receive operation in polling mode */
static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
{
@@ -734,7 +729,6 @@ static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
int min_pkt_len, status;
unsigned int intr0;
int num_rx_pkt = 0;
- /*int max_rx_pkt = NUM_RX_BUFFERS;*/
short pkt_len;
#if AMD8111E_VLAN_TAG_USED
short vtag;
@@ -850,108 +844,6 @@ rx_not_empty:
return num_rx_pkt;
}
-#else
-/*
-This function will check the ownership of receive buffers and descriptors. It will indicate to kernel up to half the number of maximum receive buffers in the descriptor ring, in a single receive interrupt. It will also replenish the descriptors with new skbs.
-*/
-static int amd8111e_rx(struct net_device *dev)
-{
- struct amd8111e_priv *lp = netdev_priv(dev);
- struct sk_buff *skb,*new_skb;
- int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
- int min_pkt_len, status;
- int num_rx_pkt = 0;
- int max_rx_pkt = NUM_RX_BUFFERS;
- short pkt_len;
-#if AMD8111E_VLAN_TAG_USED
- short vtag;
-#endif
-
- /* If we own the next entry, it's a new packet. Send it up. */
- while(++num_rx_pkt <= max_rx_pkt){
- status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
- if(status & OWN_BIT)
- return 0;
-
- /* check if err summary bit is set */
- if(status & ERR_BIT){
- /*
- * There is a tricky error noted by John Murphy,
- * <murf@...ftech.com> to Russ Nelson: Even with full-sized
- * buffers it's possible for a jabber packet to use two
- * buffers, with only the last correctly noting the error. */
- /* reseting flags */
- lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
- goto err_next_pkt;
- }
- /* check for STP and ENP */
- if(!((status & STP_BIT) && (status & ENP_BIT))){
- /* reseting flags */
- lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
- goto err_next_pkt;
- }
- pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
-
-#if AMD8111E_VLAN_TAG_USED
- vtag = status & TT_MASK;
- /*MAC will strip vlan tag*/
- if(lp->vlgrp != NULL && vtag !=0)
- min_pkt_len =MIN_PKT_LEN - 4;
- else
-#endif
- min_pkt_len =MIN_PKT_LEN;
-
- if (pkt_len < min_pkt_len) {
- lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
- lp->drv_rx_errors++;
- goto err_next_pkt;
- }
- if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){
- /* if allocation fail,
- ignore that pkt and go to next one */
- lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
- lp->drv_rx_errors++;
- goto err_next_pkt;
- }
-
- skb_reserve(new_skb, 2);
- skb = lp->rx_skbuff[rx_index];
- pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
- lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
- skb_put(skb, pkt_len);
- lp->rx_skbuff[rx_index] = new_skb;
- lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
- new_skb->data, lp->rx_buff_len-2,PCI_DMA_FROMDEVICE);
-
- skb->protocol = eth_type_trans(skb, dev);
-
-#if AMD8111E_VLAN_TAG_USED
- if(lp->vlgrp != NULL && (vtag == TT_VLAN_TAGGED)){
- amd8111e_vlan_rx(lp, skb,
- le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info));
- } else
-#endif
-
- netif_rx (skb);
- /*COAL update rx coalescing parameters*/
- lp->coal_conf.rx_packets++;
- lp->coal_conf.rx_bytes += pkt_len;
-
- dev->last_rx = jiffies;
-
-err_next_pkt:
- lp->rx_ring[rx_index].buff_phy_addr
- = cpu_to_le32(lp->rx_dma_addr[rx_index]);
- lp->rx_ring[rx_index].buff_count =
- cpu_to_le16(lp->rx_buff_len-2);
- wmb();
- lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
- rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
- }
-
- return 0;
-}
-#endif /* CONFIG_AMD8111E_NAPI */
/*
This function will indicate the link status to the kernel.
*/
@@ -1280,29 +1172,22 @@ static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
writel(intr0, mmio + INT0);
/* Check if Receive Interrupt has occurred. */
-#ifdef CONFIG_AMD8111E_NAPI
- if(intr0 & RINT0){
- if(netif_rx_schedule_prep(dev, &lp->napi)){
+ if (intr0 & RINT0) {
+ if (netif_rx_schedule_prep(dev, &lp->napi)) {
/* Disable receive interupts */
writel(RINTEN0, mmio + INTEN0);
/* Schedule a polling routine */
__netif_rx_schedule(dev, &lp->napi);
- }
- else if (intren0 & RINTEN0) {
+ } else if (intren0 & RINTEN0) {
printk("************Driver bug! \
interrupt while in poll\n");
/* Fix by disable receive interrupts */
writel(RINTEN0, mmio + INTEN0);
}
}
-#else
- if(intr0 & RINT0){
- amd8111e_rx(dev);
- writel(VAL2 | RDMD0, mmio + CMD0);
- }
-#endif /* CONFIG_AMD8111E_NAPI */
+
/* Check if Transmit Interrupt has occurred. */
- if(intr0 & TINT0)
+ if (intr0 & TINT0)
amd8111e_tx(dev);
/* Check if Link Change Interrupt has occurred. */
@@ -1340,9 +1225,7 @@ static int amd8111e_close(struct net_device * dev)
struct amd8111e_priv *lp = netdev_priv(dev);
netif_stop_queue(dev);
-#ifdef CONFIG_AMD8111E_NAPI
napi_disable(&lp->napi);
-#endif
spin_lock_irq(&lp->lock);
@@ -1374,9 +1257,7 @@ static int amd8111e_open(struct net_device * dev )
dev->name, dev))
return -EAGAIN;
-#ifdef CONFIG_AMD8111E_NAPI
napi_enable(&lp->napi);
-#endif
spin_lock_irq(&lp->lock);
@@ -1384,9 +1265,7 @@ static int amd8111e_open(struct net_device * dev )
if(amd8111e_restart(dev)){
spin_unlock_irq(&lp->lock);
-#ifdef CONFIG_AMD8111E_NAPI
napi_disable(&lp->napi);
-#endif
if (dev->irq)
free_irq(dev->irq, dev);
return -ENOMEM;
@@ -2036,9 +1915,7 @@ static int __devinit amd8111e_probe_one(struct pci_dev *pdev,
dev->irq =pdev->irq;
dev->tx_timeout = amd8111e_tx_timeout;
dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
-#ifdef CONFIG_AMD8111E_NAPI
netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32);
-#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = amd8111e_poll;
#endif
--
1.5.3.3
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists