Prepare the introduction of the lwIP (lightweight IP) TCP/IP stack by adding a new net/lwip/ directory and the NET_LWIP symbol. Network support is either NO_NET, NET (legacy stack) or NET_LWIP. Subsequent commits will introduce the lwIP code, re-work the NETDEVICE integration and port some of the NET commands and features to lwIP.
SPL_NET cannot be enabled when NET_LWIP=y. SPL_NET pulls some symbols that are part of NET (such as arp_init(), arp_timeout_check(), arp_receive(), net_arp_wait_packet_ip()). lwIP support in SPL may be added later.
Similarly, DFU_TFTP and FASTBOOT are not compatible with NET_LWIP because of dependencies on net_loop(), tftp_timeout_ms, tftp_timeout_count_max and other NET things. Let's add a dependency on !NET_LWIP for now.
As for SANDBOX, NET_LWIP cannot be used either because of strong assumptions on the network stack. Make NET_LWIP depend on !SANDBOX so that the NET_LWIP alternative is not visible in make menuconfig when sandbox_defconfig is used.
Signed-off-by: Jerome Forissier jerome.forissier@linaro.org --- Kconfig | 26 ++++++++++++++++++++++++++ common/Kconfig | 2 +- common/spl/Kconfig | 1 + drivers/dfu/Kconfig | 1 + drivers/fastboot/Kconfig | 1 + drivers/net/Kconfig | 1 + drivers/net/phy/Kconfig | 2 +- drivers/usb/gadget/Kconfig | 2 +- net/Kconfig | 29 +++++++++++++++-------------- net/Makefile | 4 ++++ net/lwip/Kconfig | 36 ++++++++++++++++++++++++++++++++++++ 11 files changed, 88 insertions(+), 17 deletions(-) create mode 100644 net/lwip/Kconfig
diff --git a/Kconfig b/Kconfig index 82df59f176e..61bc6529617 100644 --- a/Kconfig +++ b/Kconfig @@ -745,6 +745,32 @@ source "dts/Kconfig"
source "env/Kconfig"
+choice + prompt "Networking stack" + default NET + +config NO_NET + bool "No networking support" + +config NET + bool "Legacy U-Boot networking stack" + imply NETDEVICES + +config NET_LWIP + bool "Use lwIP for networking stack" + imply NETDEVICES + depends on !SANDBOX + help + Include networking support based on the lwIP (lightweight IP) + TCP/IP stack (https://nongnu.org/lwip). This is a replacement for + the default U-Boot network stack and applications located in net/ + and enabled via CONFIG_NET as well as other pieces of code that + depend on CONFIG_NET (such as cmd/net.c enabled via CONFIG_CMD_NET). + Therefore the two symbols CONFIG_NET and CONFIG_NET_LWIP are mutually + exclusive. + +endchoice + source "net/Kconfig"
source "drivers/Kconfig" diff --git a/common/Kconfig b/common/Kconfig index 4bb9f08977a..1daa495080a 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -424,7 +424,7 @@ config LOGF_FUNC_PAD
config LOG_SYSLOG bool "Log output to syslog server" - depends on NET + depends on NET || NET_LWIP help Enables a log driver which broadcasts log records via UDP port 514 to syslog servers. diff --git a/common/spl/Kconfig b/common/spl/Kconfig index af43b5f5d3c..2731849841a 100644 --- a/common/spl/Kconfig +++ b/common/spl/Kconfig @@ -1063,6 +1063,7 @@ config SPL_DM_SPI_FLASH
config SPL_NET bool "Support networking" + depends on !NET_LWIP help Enable support for network devices (such as Ethernet) in SPL. This permits SPL to load U-Boot over a network link rather than diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig index 971204758aa..d034b501360 100644 --- a/drivers/dfu/Kconfig +++ b/drivers/dfu/Kconfig @@ -20,6 +20,7 @@ config DFU_WRITE_ALT config DFU_TFTP bool "DFU via TFTP" depends on NETDEVICES + depends on !NET_LWIP select UPDATE_COMMON select DFU_OVER_TFTP help diff --git a/drivers/fastboot/Kconfig b/drivers/fastboot/Kconfig index 70207573de2..1eb460f5a02 100644 --- a/drivers/fastboot/Kconfig +++ b/drivers/fastboot/Kconfig @@ -1,5 +1,6 @@ menu "Fastboot support" depends on CMDLINE + depends on !NET_LWIP
config FASTBOOT bool diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index b4ff033afa9..d332f712a7c 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -48,6 +48,7 @@ config DM_DSA bool "Enable Driver Model for DSA switches" depends on DM_MDIO depends on PHY_FIXED + depends on !NET_LWIP help Enable driver model for DSA switches
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 73064b2af68..75986162914 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -11,7 +11,7 @@ config MV88E6352_SWITCH
menuconfig PHYLIB bool "Ethernet PHY (physical media interface) support" - depends on NET + depends on NET || NET_LWIP help Enable Ethernet PHY (physical media interface) support.
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 4621a6fd5e6..03fe3bca197 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -224,7 +224,7 @@ endif # USB_GADGET_DOWNLOAD
config USB_ETHER bool "USB Ethernet Gadget" - depends on NET + depends on NET || NET_LWIP default y if ARCH_SUNXI && USB_MUSB_GADGET help Creates an Ethernet network device through a USB peripheral diff --git a/net/Kconfig b/net/Kconfig index 5dff6336293..952690d677d 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -2,11 +2,6 @@ # Network configuration #
-menuconfig NET - bool "Networking support" - default y - imply NETDEVICES - if NET
config ARP_TIMEOUT @@ -26,15 +21,6 @@ config PROT_UDP Enable a generic udp framework that allows defining a custom handler for udp protocol.
-config BOOTDEV_ETH - bool "Enable bootdev for ethernet" - depends on BOOTSTD - default y - help - Provide a bootdev for ethernet so that is it possible to boot - an operationg system over the network, using the PXE (Preboot - Execution Environment) protocol. - config BOOTP_SEND_HOSTNAME bool "Send hostname to DNS server" help @@ -255,6 +241,19 @@ config IPV6
endif # if NET
+source "net/lwip/Kconfig" + +if NET || NET_LWIP + +config BOOTDEV_ETH + bool "Enable bootdev for ethernet" + depends on BOOTSTD + default y + help + Provide a bootdev for ethernet so that is it possible to boot + an operating system over the network, using the PXE (Preboot + Execution Environment) protocol. + config SYS_RX_ETH_BUFFER int "Number of receive packet buffers" default 4 @@ -263,3 +262,5 @@ config SYS_RX_ETH_BUFFER controllers it is recommended to set this value to 8 or even higher, since all buffers can be full shortly after enabling the interface on high Ethernet traffic. + +endif # if NET || NET_LWIP diff --git a/net/Makefile b/net/Makefile index 64ab7ec740a..70eec8caf0d 100644 --- a/net/Makefile +++ b/net/Makefile @@ -5,6 +5,8 @@
#ccflags-y += -DDEBUG
+ifeq ($(CONFIG_NET),y) + obj-$(CONFIG_NET) += arp.o obj-$(CONFIG_CMD_BOOTP) += bootp.o obj-$(CONFIG_CMD_CDP) += cdp.o @@ -38,3 +40,5 @@ obj-$(CONFIG_CMD_WGET) += wget.o # sprintf(buf, index ? "foo%d" : "foo", index) # and this is intentional usage. CFLAGS_eth_common.o += -Wno-format-extra-args + +endif diff --git a/net/lwip/Kconfig b/net/lwip/Kconfig new file mode 100644 index 00000000000..0a6bcb41369 --- /dev/null +++ b/net/lwip/Kconfig @@ -0,0 +1,36 @@ +# +# Network configuration (with lwIP stack) +# + +config LWIP_DEBUG + bool "Enable debug traces in the lwIP library" + +config LWIP_ASSERT + bool "Enable assertions in the lwIP library" + +config PROT_DHCP_LWIP + bool "DHCP support in lwIP" + depends on PROT_UDP_LWIP + help + Enable support for the DHCP protocol in lwIP. + +config PROT_DNS_LWIP + bool + depends on PROT_UDP_LWIP + +config PROT_RAW_LWIP + bool + +config PROT_TCP_LWIP + bool + +config PROT_TCP_SACK_LWIP + bool "TCP SACK support" + depends on PROT_TCP_LWIP + default y + help + TCP protocol with selective acknowledgements. Improves + file transfer speed in wget. + +config PROT_UDP_LWIP + bool