From 7a6b6f515f77d1c62a2f383b6dce18cb0af0cf4f Mon Sep 17 00:00:00 2001 From: Jeff Kirsher Date: Tue, 25 Nov 2008 01:02:08 -0800 Subject: DCB: fix kconfig option Since the netlink option for DCB is necessary to actually be useful, simplified the Kconfig option. In addition, added useful help text for the Kconfig option. Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/Kconfig | 4 ++-- drivers/net/ixgbe/Makefile | 2 +- drivers/net/ixgbe/ixgbe.h | 2 +- drivers/net/ixgbe/ixgbe_main.c | 10 +++++----- include/linux/netdevice.h | 4 ++-- net/Makefile | 4 ++-- net/dcb/Kconfig | 24 +++++++++++++++++------- net/dcb/dcbnl.c | 2 +- 8 files changed, 31 insertions(+), 21 deletions(-) diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index efd461d7c2bb..75f9f7f2fbed 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2451,10 +2451,10 @@ config IXGBE_DCA driver. DCA is a method for warming the CPU cache before data is used, with the intent of lessening the impact of cache misses. -config IXGBE_DCBNL +config IXGBE_DCB bool "Data Center Bridging (DCB) Support" default n - depends on IXGBE && DCBNL + depends on IXGBE && DCB ---help--- Say Y here if you want to use Data Center Bridging (DCB) in the driver. diff --git a/drivers/net/ixgbe/Makefile b/drivers/net/ixgbe/Makefile index 3228e508e628..6e7ef765bcd8 100644 --- a/drivers/net/ixgbe/Makefile +++ b/drivers/net/ixgbe/Makefile @@ -35,4 +35,4 @@ obj-$(CONFIG_IXGBE) += ixgbe.o ixgbe-objs := ixgbe_main.o ixgbe_common.o ixgbe_ethtool.o \ ixgbe_82598.o ixgbe_phy.o -ixgbe-$(CONFIG_IXGBE_DCBNL) += ixgbe_dcb.o ixgbe_dcb_82598.o ixgbe_dcb_nl.o +ixgbe-$(CONFIG_IXGBE_DCB) += ixgbe_dcb.o ixgbe_dcb_82598.o ixgbe_dcb_nl.o diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h index 9509aee2d361..6cbf26e3db80 100644 --- a/drivers/net/ixgbe/ixgbe.h +++ b/drivers/net/ixgbe/ixgbe.h @@ -327,7 +327,7 @@ enum ixgbe_boards { }; extern struct ixgbe_info ixgbe_82598_info; -#ifdef CONFIG_IXGBE_DCBNL +#ifdef CONFIG_IXGBE_DCB extern struct dcbnl_rtnl_ops dcbnl_ops; extern int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg, struct ixgbe_dcb_config *dst_dcb_cfg, diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 6620397a1fb4..667a6463193d 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -1914,7 +1914,7 @@ static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) } } -#ifdef CONFIG_IXGBE_DCBNL +#ifdef CONFIG_IXGBE_DCB /* * ixgbe_configure_dcb - Configure DCB hardware * @adapter: ixgbe adapter struct @@ -1960,7 +1960,7 @@ static void ixgbe_configure(struct ixgbe_adapter *adapter) ixgbe_set_rx_mode(netdev); ixgbe_restore_vlan(adapter); -#ifdef CONFIG_IXGBE_DCBNL +#ifdef CONFIG_IXGBE_DCB if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { netif_set_gso_max_size(netdev, 32768); ixgbe_configure_dcb(adapter); @@ -2749,7 +2749,7 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) struct ixgbe_hw *hw = &adapter->hw; struct pci_dev *pdev = adapter->pdev; unsigned int rss; -#ifdef CONFIG_IXGBE_DCBNL +#ifdef CONFIG_IXGBE_DCB int j; struct tc_configuration *tc; #endif @@ -2768,7 +2768,7 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) adapter->flags |= IXGBE_FLAG_RSS_ENABLED; adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES; -#ifdef CONFIG_IXGBE_DCBNL +#ifdef CONFIG_IXGBE_DCB /* Configure DCB traffic classes */ for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { tc = &adapter->dcb_cfg.tc_config[j]; @@ -4120,7 +4120,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; -#ifdef CONFIG_IXGBE_DCBNL +#ifdef CONFIG_IXGBE_DCB netdev->dcbnl_ops = &dcbnl_ops; #endif diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 76a89f8e6a19..0df0db068ac3 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -43,7 +43,7 @@ #include #include -#ifdef CONFIG_DCBNL +#ifdef CONFIG_DCB #include #endif @@ -847,7 +847,7 @@ struct net_device #define GSO_MAX_SIZE 65536 unsigned int gso_max_size; -#ifdef CONFIG_DCBNL +#ifdef CONFIG_DCB /* Data Center Bridging netlink ops */ struct dcbnl_rtnl_ops *dcbnl_ops; #endif diff --git a/net/Makefile b/net/Makefile index e5af3dc3a037..ba4460432b7c 100644 --- a/net/Makefile +++ b/net/Makefile @@ -56,8 +56,8 @@ obj-$(CONFIG_NETLABEL) += netlabel/ obj-$(CONFIG_IUCV) += iucv/ obj-$(CONFIG_RFKILL) += rfkill/ obj-$(CONFIG_NET_9P) += 9p/ -ifeq ($(CONFIG_DCBNL),y) -obj-$(CONFIG_DCB) += dcb/ +ifneq ($(CONFIG_DCB),) +obj-y += dcb/ endif ifeq ($(CONFIG_NET),y) diff --git a/net/dcb/Kconfig b/net/dcb/Kconfig index bdf38802d339..4066d59c8de5 100644 --- a/net/dcb/Kconfig +++ b/net/dcb/Kconfig @@ -1,12 +1,22 @@ config DCB - tristate "Data Center Bridging support" - -config DCBNL - bool "Data Center Bridging netlink interface support" - depends on DCB + bool "Data Center Bridging support" default n ---help--- - This option turns on the netlink interface - (dcbnl) for Data Center Bridging capable devices. + This enables support for configuring Data Center Bridging (DCB) + features on DCB capable Ethernet adapters via rtnetlink. Say 'Y' + if you have a DCB capable Ethernet adapter which supports this + interface and you are connected to a DCB capable switch. + + DCB is a collection of Ethernet enhancements which allow DCB capable + NICs and switches to support network traffic with differing + requirements (highly reliable, no drops vs. best effort vs. low + latency) to co-exist on Ethernet. + + DCB features include: + Enhanced Transmission Selection (aka Priority Grouping) - provides a + framework for assigning bandwidth guarantees to traffic classes. + Priority-based Flow Control (PFC) - a MAC control pause frame which + works at the granularity of the 802.1p priority instead of the + link (802.3x). If unsure, say N. diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index b2bda3f610df..79a351d323af 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -48,7 +48,7 @@ */ MODULE_AUTHOR("Lucy Liu, "); -MODULE_DESCRIPTION("Data Center Bridging generic netlink interface"); +MODULE_DESCRIPTION("Data Center Bridging netlink interface"); MODULE_LICENSE("GPL"); /**************** DCB attribute policies *************************************/ -- cgit v1.2.2