On Thu, Jul 25, 2024 at 02:57:23PM +0200, Jerome Forissier wrote: > 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.foriss...@linaro.org> [snip]
Here in net/Kconfig you do.. > +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 But we must have SYS_RX_ETH_BUFFER defined even in the NO_NET case as otherwise previously <net.h> and now <net-common.h> cannot be used, and untying that is another big mess. We include <net.h> in common areas for function prototypes where their usage is guarded. But we use PKTBUFSRX in some structs that aren't guarded. Trying to build for example for am62x_beagleplay_r5 with this series blows up in a lot of places. -- Tom
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