This makes the user interface a little hostile. People thing of an MTU of 1500 bytes, but the corresponding packet is really 1514 bytes (including the 14 byte Ethernet header). A more friendly solution would configure the MTU (as before), but then derive the packet buffer size by adding the MAC header length. Instead, we define the packet buffer size then derive the MTU.
The MTU is not common currency in networking. On the wire, the only real issue is the MSS which is derived from MTU by subtracting the IP header and TCP header sizes (for the case of TCP). Now it is derived for the PKTSIZE by subtracting the IP header, the TCP header, and the MAC header sizes. So we should be all good and without the recurring 14 byte error in MTU's and MSS's.
Squashed commit of the following:
Trivial update to fix some spacing issues.
net/: Rename several macros containing _MTU to _PKTSIZE.
net/: Rename CONFIG_NET_SLIP_MTU to CONFIG_NET_SLIP_PKTSIZE and similarly for CONFIG_NET_TUN_MTU. These are not the MTU which does not include the size of the link layer header. These are the full size of the packet buffer memory (minus any GUARD bytes).
net/: Rename CONFIG_NET_6LOWPAN_MTU to CONFIG_NET_6LOWPAN_PKTSIZE and similarly for CONFIG_NET_TUN_MTU. These are not the MTU which does not include the size of the link layer header. These are the full size of the packet buffer memory (minus any GUARD bytes).
net/: Rename CONFIG_NET_ETH_MTU to CONFIG_NET_ETH_PKTSIZE. This is not the MTU which does not include the size of the link layer header. This is the full size of the packet buffer memory (minus any GUARD bytes).
net/: Rename the file d_mtu in the network driver structure to d_pktsize. That value saved there is not the MTU. The packetsize is the memory large enough to hold the maximum packet PLUS the size of the link layer header. The MTU does not include the link layer header.
Add support for STM32F746G-disco board SDRAM
* add support for STM32F746G-disco board SDRAM
* changed fb config to use SDRAM and fixed compilation
Approved-by: GregoryN <gnutt@nuttx.org>
stm32f7:I2C reset Configure I2C pins as GPIO output
Pins were reset to inputs in the deinit. This resets
them to outputs.
Approved-by: GregoryN <gnutt@nuttx.org>
stm32f7: Fix compile error caused by intentional use of fall through
Approved-by: Sebastien Lorquet <sebastien@lorquet.fr>
Approved-by: GregoryN <gnutt@nuttx.org>
arch/arm: Remove support for CONFIG_ARMV7M_CMNVECTOR. It is now the only vector support available. Also remove CONFIG_HAVE_CMNVECTOR. That no longer signifies anything."
arch/arm/src/stm32: This commit removes support for the dedicated vector handling from the STM32 architecture support. Only common vectors are now supported.
Squashed commit of the following:
sched: Rename all use of system_t to clock_t.
syscall: Rename all use of system_t to clock_t.
net: Rename all use of system_t to clock_t.
libs: Rename all use of system_t to clock_t.
fs: Rename all use of system_t to clock_t.
drivers: Rename all use of system_t to clock_t.
arch: Rename all use of system_t to clock_t.
include: Remove definition of systime_t; rename all use of system_t to clock_t.
Squashed commit of the following:
arch/arm/src/stm32f7: Some minor changes for clean compilation of LTDC.
arch/arm/src/stm32f7: Add overly support for LTDC driver header file.
arch/arm/src/stm32f7: Add overly support for LTDC driver file.
arch/arm/src/stm32f7: Add overly support for DMA2D driver header file.
arch/arm/src/stm32f7: Finishes overly support for DMA2D driver.
arch/arm/src/stm32f7: Partial overly support in DMA2D driver (a lot more to be donw)
arch/arm/src/stm32f7/chip: Clone overlay DMA2D register definitions from F4
arch/arm/src/stm32f7: Clone overlay configuration from stm32 F4
stm32f7: serial: Fix ioctl TIOCSSINGLEWIRE
The TRM notes that UE must be disabled in order to write HDSEL in
USART_CR3. This was not being done, so calls to TIOCSSINGLEWIRE were
silently failing.
This change checks the state of UE in USART_CR1, clears the UE bit
before writing HDSEL, then re-enables it if neccesary.
Approved-by: GregoryN <gnutt@nuttx.org>
commit 7fd1f0d78546fa0315f4077b779efdd884e5bd53
Author: William Douglas <william@rocklandscientific.com>
Date: Tue May 15 13:19:31 2018 -0700
Add support for the second SDMMC device.
The second SDMMC device was already supported but
the clock was never enabled. This fixes that.
binfmt/, configs/, grahics/, libc/, mm/, net/, sched/: OS references to the errno variable should always use the set_errno(), get_errno() macros
arch/arm/src/stm32 and stm32f7: Architecture-specific code is not permitted to modify the errno variable. drivers/ and libc/: OS references to the errno variable should always use the set_errno(), get_errno() macros
