--- /dev/null
+CONFIG_ALIGNMENT_TRAP=y
+CONFIG_AMBA_PL08X=y
+CONFIG_ARCH_32BIT_OFF_T=y
+CONFIG_ARCH_GEMINI=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+# CONFIG_ARCH_MOXART is not set
+CONFIG_ARCH_MULTIPLATFORM=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V4T is not set
+CONFIG_ARCH_MULTI_V4_V5=y
+# CONFIG_ARCH_MULTI_V5 is not set
+CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_ARM=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_APPENDED_DTB=y
+# CONFIG_ARM_ATAG_DTB_COMPAT is not set
+CONFIG_ARM_HAS_GROUP_RELOCS=y
+CONFIG_ARM_L1_CACHE_SHIFT=5
+CONFIG_ARM_PATCH_PHYS_VIRT=y
+CONFIG_ARM_UNWIND=y
+CONFIG_ATA=y
+CONFIG_ATAGS=y
+CONFIG_ATA_FORCE=y
+CONFIG_ATA_VERBOSE_ERROR=y
+CONFIG_AUTO_ZRELADDR=y
+CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_PM=y
+CONFIG_BOUNCE=y
+CONFIG_BUFFER_HEAD=y
+CONFIG_CACHESTAT_SYSCALL=y
+CONFIG_CC_HAVE_STACKPROTECTOR_TLS=y
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_PERCENTAGE=10
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+# CONFIG_CMA_SIZE_SEL_MBYTES is not set
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+CONFIG_CMA_SIZE_SEL_PERCENTAGE=y
+# CONFIG_CMA_SYSFS is not set
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_GEMINI=y
+CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_CONTEXT_TRACKING=y
+CONFIG_CONTEXT_TRACKING_IDLE=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_COREDUMP=y
+CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
+CONFIG_CPU_32v4=y
+CONFIG_CPU_ABRT_EV4=y
+CONFIG_CPU_CACHE_FA=y
+CONFIG_CPU_CACHE_VIVT=y
+CONFIG_CPU_COPY_FA=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+# CONFIG_CPU_DCACHE_WRITETHROUGH is not set
+CONFIG_CPU_FA526=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_NO_EFFICIENT_FFS=y
+CONFIG_CPU_PABRT_LEGACY=y
+CONFIG_CPU_THERMAL=y
+CONFIG_CPU_TLB_FA=y
+CONFIG_CPU_USE_DOMAINS=y
+CONFIG_CRASH_CORE=y
+CONFIG_CRC16=y
+# CONFIG_CRC32_SARWATE is not set
+CONFIG_CRC32_SLICEBY8=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRC_ITU_T=y
+CONFIG_CROSS_MEMORY_ATTACH=y
+CONFIG_CRYPTO_CMAC=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_DEV_JH7110 is not set
+CONFIG_CRYPTO_DEV_SL3516=y
+# CONFIG_CRYPTO_DEV_SL3516_DEBUG is not set
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_ECHAINIV=y
+CONFIG_CRYPTO_ENGINE=y
+CONFIG_CRYPTO_GENIV=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_HW=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
+CONFIG_CRYPTO_LIB_DES=y
+CONFIG_CRYPTO_LIB_GF128MUL=y
+CONFIG_CRYPTO_LIB_SHA1=y
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_LIB_UTILS=y
+# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
+# CONFIG_CRYPTO_MANAGER_EXTRA_TESTS is not set
+CONFIG_CRYPTO_MD4=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA3=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_SIG2=y
+CONFIG_CRYPTO_USER=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DECOMPRESS_BZIP2=y
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_DECOMPRESS_LZ4=y
+CONFIG_DECOMPRESS_LZMA=y
+CONFIG_DECOMPRESS_LZO=y
+CONFIG_DECOMPRESS_XZ=y
+CONFIG_DMADEVICES=y
+CONFIG_DMATEST=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_ENGINE_RAID=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_OPS=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DRM=y
+CONFIG_DRM_BRIDGE=y
+CONFIG_DRM_FBDEV_EMULATION=y
+CONFIG_DRM_FBDEV_OVERALLOC=100
+CONFIG_DRM_GEM_DMA_HELPER=y
+CONFIG_DRM_KMS_HELPER=y
+CONFIG_DRM_PANEL=y
+CONFIG_DRM_PANEL_BRIDGE=y
+CONFIG_DRM_PANEL_ILITEK_IL9322=y
+CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
+CONFIG_DRM_TVE200=y
+CONFIG_DTC=y
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_EDAC_ATOMIC_SCRUB=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EEPROM_93CX6=y
+CONFIG_ELF_CORE=y
+CONFIG_EXCLUSIVE_SYSTEM_RAM=y
+# CONFIG_EXPERT is not set
+CONFIG_EXT4_FS=y
+CONFIG_EXTCON=y
+CONFIG_FARADAY_FTINTC010=y
+CONFIG_FB=y
+CONFIG_FB_CORE=y
+CONFIG_FB_DEFERRED_IO=y
+CONFIG_FB_DMAMEM_HELPERS=y
+CONFIG_FB_IOMEM_FOPS=y
+CONFIG_FB_SYSMEM_HELPERS=y
+CONFIG_FB_SYSMEM_HELPERS_DEFERRED=y
+CONFIG_FB_SYS_COPYAREA=y
+CONFIG_FB_SYS_FILLRECT=y
+CONFIG_FB_SYS_FOPS=y
+CONFIG_FB_SYS_IMAGEBLIT=y
+CONFIG_FHANDLE=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_8x8=y
+CONFIG_FONT_SUPPORT=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
+# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FTTMR010_TIMER=y
+CONFIG_FTWDT010_WATCHDOG=y
+CONFIG_FUNCTION_ALIGNMENT=0
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_FW_LOADER_SYSFS=y
+# CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set
+CONFIG_GCC_ASM_GOTO_OUTPUT_WORKAROUND=y
+CONFIG_GEMINI_ETHERNET=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GLOB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_CDEV=y
+CONFIG_GPIO_FTGPIO010=y
+CONFIG_GPIO_GENERIC=y
+CONFIG_GRO_CELLS=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HDMI=y
+CONFIG_HIGHMEM=y
+CONFIG_HIGHPTE=y
+CONFIG_HWMON=y
+CONFIG_HW_CONSOLE=y
+CONFIG_HW_RANDOM=y
+CONFIG_HZ_FIXED=0
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_COMPAT=y
+CONFIG_I2C_GPIO=y
+CONFIG_I2C_HELPER_AUTO=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_INPUT=y
+CONFIG_INPUT_KEYBOARD=y
+CONFIG_IO_URING=y
+CONFIG_IPC_NS=y
+CONFIG_IRQCHIP=y
+CONFIG_IRQSTACKS=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+# CONFIG_ISDN is not set
+CONFIG_JBD2=y
+CONFIG_KALLSYMS=y
+CONFIG_KCMP=y
+CONFIG_KERNEL_LZMA=y
+# CONFIG_KERNEL_XZ is not set
+CONFIG_KEXEC=y
+CONFIG_KEXEC_CORE=y
+CONFIG_KEYBOARD_DLINK_DIR685=y
+CONFIG_KMAP_LOCAL=y
+CONFIG_KMAP_LOCAL_NON_LINEAR_PTE_ARRAY=y
+# CONFIG_LDM_DEBUG is not set
+CONFIG_LDM_PARTITION=y
+CONFIG_LEDS_TRIGGER_DISK=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOGO=y
+CONFIG_LOGO_LINUX_CLUT224=y
+# CONFIG_LOGO_LINUX_MONO is not set
+CONFIG_LOGO_LINUX_VGA16=y
+CONFIG_LZ4_DECOMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MDIO_BITBANG=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MDIO_GPIO=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGRATION=y
+CONFIG_MMU_LAZY_TLB_REFCOUNT=y
+CONFIG_MODULES_USE_ELF_REL=y
+# CONFIG_MODULE_UNLOAD is not set
+CONFIG_MQ_IOSCHED_DEADLINE=y
+CONFIG_MQ_IOSCHED_KYBER=y
+CONFIG_MTD_CFI_STAA=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_GEMINI=y
+CONFIG_MTD_REDBOOT_PARTS=y
+CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_WRGG_FW=y
+CONFIG_NAMESPACES=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_KUSER_HELPERS=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NEED_SRCU_NMI_SAFE=y
+CONFIG_NET_DEVLINK=y
+CONFIG_NET_EGRESS=y
+CONFIG_NET_INGRESS=y
+CONFIG_NET_NS=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NET_XGRESS=y
+CONFIG_NLS=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NVMEM=y
+CONFIG_NVMEM_LAYOUTS=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_OLD_SIGACTION=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_PAGE_POOL=y
+CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
+CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
+CONFIG_PAHOLE_HAS_LANG_EXCLUDE=y
+# CONFIG_PANIC_ON_OOPS is not set
+CONFIG_PANIC_ON_OOPS_VALUE=0
+CONFIG_PANIC_TIMEOUT=0
+CONFIG_PATA_FTIDE010=y
+CONFIG_PCI=y
+CONFIG_PCIEASPM=y
+CONFIG_PCIEASPM_DEFAULT=y
+# CONFIG_PCIEASPM_PERFORMANCE is not set
+# CONFIG_PCIEASPM_POWERSAVE is not set
+# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_FTPCI100=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_PHYLIB_LEDS=y
+CONFIG_PHYLINK=y
+CONFIG_PID_NS=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_GEMINI=y
+# CONFIG_PINCTRL_SINGLE is not set
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_GEMINI_POWEROFF=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_PREEMPT=y
+CONFIG_PREEMPTION=y
+CONFIG_PREEMPT_BUILD=y
+CONFIG_PREEMPT_COUNT=y
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_RCU=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_RANDSTRUCT_NONE=y
+CONFIG_RATIONAL=y
+CONFIG_RD_BZIP2=y
+CONFIG_RD_GZIP=y
+CONFIG_RD_LZ4=y
+CONFIG_RD_LZMA=y
+CONFIG_RD_LZO=y
+CONFIG_RD_XZ=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_I2C=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_RELAY=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RSEQ=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_FTRTC010=y
+CONFIG_RTC_I2C_AND_SPI=y
+CONFIG_RTC_MC146818_LIB=y
+CONFIG_RTC_NVMEM=y
+CONFIG_SATA_GEMINI=y
+CONFIG_SATA_HOST=y
+CONFIG_SATA_PMP=y
+CONFIG_SCSI=y
+CONFIG_SCSI_COMMON=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_SENSORS_DRIVETEMP=y
+CONFIG_SENSORS_GPIO_FAN=y
+CONFIG_SENSORS_LM75=y
+CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
+CONFIG_SERIAL_8250_EXAR=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_NR_UARTS=1
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_PCILIB=y
+CONFIG_SERIAL_8250_RUNTIME_UARTS=1
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIO=y
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SERIO_SERPORT=y
+CONFIG_SGL_ALLOC=y
+CONFIG_SG_POOL=y
+CONFIG_SLUB_DEBUG=y
+CONFIG_SOFTIRQ_ON_OWN_STACK=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SPI=y
+CONFIG_SPI_BITBANG=y
+CONFIG_SPI_GPIO=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPLIT_PTLOCK_CPUS=999999
+CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU=y
+CONFIG_STACKDEPOT=y
+CONFIG_STACKTRACE=y
+# CONFIG_STRIP_ASM_SYMS is not set
+CONFIG_SWPHY=y
+CONFIG_SYNC_FILE=y
+CONFIG_SYSFS_SYSCALL=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+CONFIG_THERMAL=y
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_HWMON=y
+CONFIG_THERMAL_OF=y
+CONFIG_THREAD_INFO_IN_TASK=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+CONFIG_UNINLINE_SPIN_UNLOCK=y
+CONFIG_UNWINDER_ARM=y
+CONFIG_USB_COMMON=y
+# CONFIG_USB_FOTG210 is not set
+CONFIG_USB_GADGET=y
+CONFIG_USB_GPIO_VBUS=y
+CONFIG_USB_PHY=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USER_NS=y
+CONFIG_USE_OF=y
+CONFIG_UTS_NS=y
+CONFIG_VGA_ARB=y
+CONFIG_VGA_ARB_MAX_GPUS=16
+CONFIG_VIDEO_CMDLINE=y
+CONFIG_VIDEO_NOMODESET=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_WATCHDOG_CORE=y
+# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_ARMTHUMB=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_XZ_DEC_IA64=y
+CONFIG_XZ_DEC_POWERPC=y
+CONFIG_XZ_DEC_SPARC=y
+CONFIG_XZ_DEC_X86=y
+CONFIG_ZBOOT_ROM_BSS=0
+CONFIG_ZBOOT_ROM_TEXT=0
+CONFIG_ZLIB_INFLATE=y
--- /dev/null
+From 4d5c3828a8dd0062eeeb56b7d857a76130c3683c Mon Sep 17 00:00:00 2001
+From: Linus Walleij <linus.walleij@linaro.org>
+Date: Tue, 8 Apr 2025 11:26:58 +0200
+Subject: [PATCH 1/2] net: ethernet: cortina: Use TOE/TSO on all TCP
+
+It is desireable to push the hardware accelerator to also
+process non-segmented TCP frames: we pass the skb->len
+to the "TOE/TSO" offloader and it will handle them.
+
+Without this quirk the driver becomes unstable and lock
+up and and crash.
+
+I do not know exactly why, but it is probably due to the
+TOE (TCP offload engine) feature that is coupled with the
+segmentation feature - it is not possible to turn one
+part off and not the other, either both TOE and TSO are
+active, or neither of them.
+
+Not having the TOE part active seems detrimental, as if
+that hardware feature is not really supposed to be turned
+off.
+
+The datasheet says:
+
+ "Based on packet parsing and TCP connection/NAT table
+ lookup results, the NetEngine puts the packets
+ belonging to the same TCP connection to the same queue
+ for the software to process. The NetEngine puts
+ incoming packets to the buffer or series of buffers
+ for a jumbo packet. With this hardware acceleration,
+ IP/TCP header parsing, checksum validation and
+ connection lookup are offloaded from the software
+ processing."
+
+After numerous tests with the hardware locking up after
+something between minutes and hours depending on load
+using iperf3 I have concluded this is necessary to stabilize
+the hardware.
+
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+Link: https://patch.msgid.link/20250408-gemini-ethernet-tso-always-v1-1-e669f932359c@linaro.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ drivers/net/ethernet/cortina/gemini.c | 37 +++++++++++++++++++++------
+ 1 file changed, 29 insertions(+), 8 deletions(-)
+
+--- a/drivers/net/ethernet/cortina/gemini.c
++++ b/drivers/net/ethernet/cortina/gemini.c
+@@ -1143,6 +1143,7 @@ static int gmac_map_tx_bufs(struct net_d
+ struct gmac_txdesc *txd;
+ skb_frag_t *skb_frag;
+ dma_addr_t mapping;
++ bool tcp = false;
+ void *buffer;
+ u16 mss;
+ int ret;
+@@ -1150,6 +1151,13 @@ static int gmac_map_tx_bufs(struct net_d
+ word1 = skb->len;
+ word3 = SOF_BIT;
+
++ /* Determine if we are doing TCP */
++ if (skb->protocol == htons(ETH_P_IP))
++ tcp = (ip_hdr(skb)->protocol == IPPROTO_TCP);
++ else
++ /* IPv6 */
++ tcp = (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP);
++
+ mss = skb_shinfo(skb)->gso_size;
+ if (mss) {
+ /* This means we are dealing with TCP and skb->len is the
+@@ -1162,8 +1170,26 @@ static int gmac_map_tx_bufs(struct net_d
+ mss, skb->len);
+ word1 |= TSS_MTU_ENABLE_BIT;
+ word3 |= mss;
++ } else if (tcp) {
++ /* Even if we are not using TSO, use the hardware offloader
++ * for transferring the TCP frame: this hardware has partial
++ * TCP awareness (called TOE - TCP Offload Engine) and will
++ * according to the datasheet put packets belonging to the
++ * same TCP connection in the same queue for the TOE/TSO
++ * engine to process. The engine will deal with chopping
++ * up frames that exceed ETH_DATA_LEN which the
++ * checksumming engine cannot handle (see below) into
++ * manageable chunks. It flawlessly deals with quite big
++ * frames and frames containing custom DSA EtherTypes.
++ */
++ mss = netdev->mtu + skb_tcp_all_headers(skb);
++ mss = min(mss, skb->len);
++ netdev_dbg(netdev, "TOE/TSO len %04x mtu %04x mss %04x\n",
++ skb->len, netdev->mtu, mss);
++ word1 |= TSS_MTU_ENABLE_BIT;
++ word3 |= mss;
+ } else if (skb->len >= ETH_FRAME_LEN) {
+- /* Hardware offloaded checksumming isn't working on frames
++ /* Hardware offloaded checksumming isn't working on non-TCP frames
+ * bigger than 1514 bytes. A hypothesis about this is that the
+ * checksum buffer is only 1518 bytes, so when the frames get
+ * bigger they get truncated, or the last few bytes get
+@@ -1180,21 +1206,16 @@ static int gmac_map_tx_bufs(struct net_d
+ }
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+- int tcp = 0;
+-
+ /* We do not switch off the checksumming on non TCP/UDP
+ * frames: as is shown from tests, the checksumming engine
+ * is smart enough to see that a frame is not actually TCP
+ * or UDP and then just pass it through without any changes
+ * to the frame.
+ */
+- if (skb->protocol == htons(ETH_P_IP)) {
++ if (skb->protocol == htons(ETH_P_IP))
+ word1 |= TSS_IP_CHKSUM_BIT;
+- tcp = ip_hdr(skb)->protocol == IPPROTO_TCP;
+- } else { /* IPv6 */
++ else
+ word1 |= TSS_IPV6_ENABLE_BIT;
+- tcp = ipv6_hdr(skb)->nexthdr == IPPROTO_TCP;
+- }
+
+ word1 |= tcp ? TSS_TCP_CHKSUM_BIT : TSS_UDP_CHKSUM_BIT;
+ }
projects / thirdparty / openwrt.git / commitdiff
