rb532: add support for 4.9

Includes latest korina fixes.

Signed-off-by: Roman Yeryomin <roman@advem.lv>
[rewrite commit message (subject <= 50 characters)]
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

10 files changed, 675 insertions, 0 deletions

diff --git a/target/linux/rb532/config-4.9 b/target/linux/rb532/config-4.9
new file mode 100644
index 0000000000..765f01b9c1
--- /dev/null
+++ b/target/linux/rb532/config-4.9
@@ -0,0 +1,185 @@
+CONFIG_ARCH_BINFMT_ELF_STATE=y
+CONFIG_ARCH_CLOCKSOURCE_DATA=y
+CONFIG_ARCH_DISCARD_MEMBLOCK=y
+CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
+CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
+# CONFIG_ARCH_HAS_GCOV_PROFILE_ALL is not set
+# CONFIG_ARCH_HAS_SG_CHAIN is not set
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
+CONFIG_ARCH_REQUIRE_GPIOLIB=y
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_ATA=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_CEVT_R4K=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CPU_GENERIC_DUMP_TLB=y
+CONFIG_CPU_HAS_PREFETCH=y
+CONFIG_CPU_HAS_SYNC=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_MIPS32=y
+CONFIG_CPU_MIPS32_R1=y
+CONFIG_CPU_MIPSR1=y
+CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
+CONFIG_CPU_R4K_CACHE_TLB=y
+CONFIG_CPU_R4K_FPU=y
+CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_HIGHMEM=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_DEFLATE=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_LZO=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_CSRC_R4K=y
+CONFIG_DMA_NONCOHERENT=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+CONFIG_EXT4_FS=y
+# CONFIG_F2FS_CHECK_FS is not set
+CONFIG_F2FS_FS=y
+# CONFIG_F2FS_FS_SECURITY is not set
+CONFIG_F2FS_FS_XATTR=y
+CONFIG_F2FS_STAT_FS=y
+CONFIG_FS_MBCACHE=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_IO=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GLOB=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_DEVRES=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_HARDWARE_WATCHPOINTS=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
+# CONFIG_HAVE_ARCH_BITREVERSE is not set
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
+CONFIG_HAVE_BPF_JIT=y
+CONFIG_HAVE_CC_STACKPROTECTOR=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+CONFIG_HAVE_DMA_ATTRS=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_IDE=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
+CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_HW_HAS_PCI=y
+CONFIG_HW_RANDOM=y
+CONFIG_HZ=250
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_IMAGE_CMDLINE_HACK=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_MIPS_CPU=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_KEXEC=y
+CONFIG_KEXEC_CORE=y
+CONFIG_KORINA=y
+CONFIG_LEDS_MIKROTIK_RB532=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MIKROTIK_RB532=y
+CONFIG_MIPS=y
+CONFIG_MIPS_CLOCK_VSYSCALL=y
+CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER=y
+# CONFIG_MIPS_HUGE_TLB_SUPPORT is not set
+CONFIG_MIPS_L1_CACHE_SHIFT=4
+CONFIG_MIPS_L1_CACHE_SHIFT_4=y
+# CONFIG_MIPS_MACHINE is not set
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MTD_CFI_ADV_OPTIONS=y
+# CONFIG_MTD_CFI_AMDSTD is not set
+CONFIG_MTD_CFI_GEOMETRY=y
+# CONFIG_MTD_CFI_INTELEXT is not set
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_ECC=y
+CONFIG_MTD_NAND_PLATFORM=y
+CONFIG_MTD_PHYSMAP=y
+# CONFIG_MTD_ROOTFS_ROOT_DEV is not set
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BEB_LIMIT=20
+CONFIG_MTD_UBI_BLOCK=y
+# CONFIG_MTD_UBI_FASTMAP is not set
+# CONFIG_MTD_UBI_GLUEBI is not set
+CONFIG_MTD_UBI_WL_THRESHOLD=4096
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
+# CONFIG_NO_IOPORT_MAP is not set
+# CONFIG_OF is not set
+CONFIG_PATA_RB532=y
+CONFIG_PCI=y
+CONFIG_PCI_DISABLE_COMMON_QUIRKS=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_RC32434_WDT=y
+# CONFIG_RCU_STALL_COMMON is not set
+# CONFIG_SCHED_HRTICK is not set
+# CONFIG_SCHED_INFO is not set
+CONFIG_SCSI=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+# CONFIG_SERIAL_8250_FSL is not set
+CONFIG_SQUASHFS_DECOMP_MULTI=y
+# CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU is not set
+CONFIG_SRCU=y
+# CONFIG_SWAP is not set
+CONFIG_SWAP_IO_SPACE=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYS_HAS_CPU_MIPS32_R1=y
+CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
+CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
+CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_UBIFS_FS=y
+# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set
+CONFIG_UBIFS_FS_LZO=y
+CONFIG_UBIFS_FS_ZLIB=y
+CONFIG_VIA_RHINE=y
+CONFIG_VIA_RHINE_MMIO=y
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZONE_DMA_FLAG=0
diff --git a/target/linux/rb532/patches-4.9/001-cmdline_hack.patch b/target/linux/rb532/patches-4.9/001-cmdline_hack.patch
new file mode 100644
index 0000000000..a39da9c14a
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/001-cmdline_hack.patch
@@ -0,0 +1,20 @@
+--- a/arch/mips/rb532/prom.c
++++ b/arch/mips/rb532/prom.c
+@@ -67,6 +67,7 @@ static inline unsigned long tag2ul(char
+ 	return simple_strtoul(num, 0, 10);
+ }
+ 
++extern char __image_cmdline[];
+ void __init prom_setup_cmdline(void)
+ {
+ 	static char cmd_line[COMMAND_LINE_SIZE] __initdata;
+@@ -108,6 +109,9 @@ void __init prom_setup_cmdline(void)
+ 	}
+ 	*(cp++) = ' ';
+ 
++	strcpy(cp,(__image_cmdline));
++	cp += strlen(__image_cmdline);
++
+ 	i = strlen(arcs_cmdline);
+ 	if (i > 0) {
+ 		*(cp++) = ' ';
diff --git a/target/linux/rb532/patches-4.9/004-rb532-fix-partition-info.patch b/target/linux/rb532/patches-4.9/004-rb532-fix-partition-info.patch
new file mode 100644
index 0000000000..5161a233dd
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/004-rb532-fix-partition-info.patch
@@ -0,0 +1,17 @@
+--- a/arch/mips/rb532/devices.c
++++ b/arch/mips/rb532/devices.c
+@@ -186,11 +186,11 @@ static struct platform_device nand_slot0
+ 
+ static struct mtd_partition rb532_partition_info[] = {
+ 	{
+-		.name = "Routerboard NAND boot",
++		.name = "kernel",
+ 		.offset = 0,
+-		.size = 4 * 1024 * 1024,
++		.size = 8 * 1024 * 1024,
+ 	}, {
+-		.name = "rootfs",
++		.name = "ubi",
+ 		.offset = MTDPART_OFS_NXTBLK,
+ 		.size = MTDPART_SIZ_FULL,
+ 	}
diff --git a/target/linux/rb532/patches-4.9/106-dont-use-rx-overflow-and-tx-underflow-interrupts.patch b/target/linux/rb532/patches-4.9/106-dont-use-rx-overflow-and-tx-underflow-interrupts.patch
new file mode 100644
index 0000000000..e75079b12f
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/106-dont-use-rx-overflow-and-tx-underflow-interrupts.patch
@@ -0,0 +1,156 @@
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -122,8 +122,6 @@ struct korina_private {
+ 
+ 	int rx_irq;
+ 	int tx_irq;
+-	int ovr_irq;
+-	int und_irq;
+ 
+ 	spinlock_t lock;        /* NIC xmit lock */
+ 
+@@ -890,8 +888,6 @@ static void korina_restart_task(struct w
+ 	 */
+ 	disable_irq(lp->rx_irq);
+ 	disable_irq(lp->tx_irq);
+-	disable_irq(lp->ovr_irq);
+-	disable_irq(lp->und_irq);
+ 
+ 	writel(readl(&lp->tx_dma_regs->dmasm) |
+ 				DMA_STAT_FINI | DMA_STAT_ERR,
+@@ -910,40 +906,10 @@ static void korina_restart_task(struct w
+ 	}
+ 	korina_multicast_list(dev);
+ 
+-	enable_irq(lp->und_irq);
+-	enable_irq(lp->ovr_irq);
+ 	enable_irq(lp->tx_irq);
+ 	enable_irq(lp->rx_irq);
+ }
+ 
+-static void korina_clear_and_restart(struct net_device *dev, u32 value)
+-{
+-	struct korina_private *lp = netdev_priv(dev);
+-
+-	netif_stop_queue(dev);
+-	writel(value, &lp->eth_regs->ethintfc);
+-	schedule_work(&lp->restart_task);
+-}
+-
+-/* Ethernet Tx Underflow interrupt */
+-static irqreturn_t korina_und_interrupt(int irq, void *dev_id)
+-{
+-	struct net_device *dev = dev_id;
+-	struct korina_private *lp = netdev_priv(dev);
+-	unsigned int und;
+-
+-	spin_lock(&lp->lock);
+-
+-	und = readl(&lp->eth_regs->ethintfc);
+-
+-	if (und & ETH_INT_FC_UND)
+-		korina_clear_and_restart(dev, und & ~ETH_INT_FC_UND);
+-
+-	spin_unlock(&lp->lock);
+-
+-	return IRQ_HANDLED;
+-}
+-
+ static void korina_tx_timeout(struct net_device *dev)
+ {
+ 	struct korina_private *lp = netdev_priv(dev);
+@@ -951,25 +917,6 @@ static void korina_tx_timeout(struct net
+ 	schedule_work(&lp->restart_task);
+ }
+ 
+-/* Ethernet Rx Overflow interrupt */
+-static irqreturn_t
+-korina_ovr_interrupt(int irq, void *dev_id)
+-{
+-	struct net_device *dev = dev_id;
+-	struct korina_private *lp = netdev_priv(dev);
+-	unsigned int ovr;
+-
+-	spin_lock(&lp->lock);
+-	ovr = readl(&lp->eth_regs->ethintfc);
+-
+-	if (ovr & ETH_INT_FC_OVR)
+-		korina_clear_and_restart(dev, ovr & ~ETH_INT_FC_OVR);
+-
+-	spin_unlock(&lp->lock);
+-
+-	return IRQ_HANDLED;
+-}
+-
+ #ifdef CONFIG_NET_POLL_CONTROLLER
+ static void korina_poll_controller(struct net_device *dev)
+ {
+@@ -992,8 +939,7 @@ static int korina_open(struct net_device
+ 	}
+ 
+ 	/* Install the interrupt handler
+-	 * that handles the Done Finished
+-	 * Ovr and Und Events */
++	 * that handles the Done Finished */
+ 	ret = request_irq(lp->rx_irq, korina_rx_dma_interrupt,
+ 			0, "Korina ethernet Rx", dev);
+ 	if (ret < 0) {
+@@ -1009,31 +955,10 @@ static int korina_open(struct net_device
+ 		goto err_free_rx_irq;
+ 	}
+ 
+-	/* Install handler for overrun error. */
+-	ret = request_irq(lp->ovr_irq, korina_ovr_interrupt,
+-			0, "Ethernet Overflow", dev);
+-	if (ret < 0) {
+-		printk(KERN_ERR "%s: unable to get OVR IRQ %d\n",
+-		    dev->name, lp->ovr_irq);
+-		goto err_free_tx_irq;
+-	}
+-
+-	/* Install handler for underflow error. */
+-	ret = request_irq(lp->und_irq, korina_und_interrupt,
+-			0, "Ethernet Underflow", dev);
+-	if (ret < 0) {
+-		printk(KERN_ERR "%s: unable to get UND IRQ %d\n",
+-		    dev->name, lp->und_irq);
+-		goto err_free_ovr_irq;
+-	}
+ 	mod_timer(&lp->media_check_timer, jiffies + 1);
+ out:
+ 	return ret;
+ 
+-err_free_ovr_irq:
+-	free_irq(lp->ovr_irq, dev);
+-err_free_tx_irq:
+-	free_irq(lp->tx_irq, dev);
+ err_free_rx_irq:
+ 	free_irq(lp->rx_irq, dev);
+ err_release:
+@@ -1051,8 +976,6 @@ static int korina_close(struct net_devic
+ 	/* Disable interrupts */
+ 	disable_irq(lp->rx_irq);
+ 	disable_irq(lp->tx_irq);
+-	disable_irq(lp->ovr_irq);
+-	disable_irq(lp->und_irq);
+ 
+ 	korina_abort_tx(dev);
+ 	tmp = readl(&lp->tx_dma_regs->dmasm);
+@@ -1072,8 +995,6 @@ static int korina_close(struct net_devic
+ 
+ 	free_irq(lp->rx_irq, dev);
+ 	free_irq(lp->tx_irq, dev);
+-	free_irq(lp->ovr_irq, dev);
+-	free_irq(lp->und_irq, dev);
+ 
+ 	return 0;
+ }
+@@ -1113,8 +1034,6 @@ static int korina_probe(struct platform_
+ 
+ 	lp->rx_irq = platform_get_irq_byname(pdev, "korina_rx");
+ 	lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx");
+-	lp->ovr_irq = platform_get_irq_byname(pdev, "korina_ovr");
+-	lp->und_irq = platform_get_irq_byname(pdev, "korina_und");
+ 
+ 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_regs");
+ 	dev->base_addr = r->start;
diff --git a/target/linux/rb532/patches-4.9/107-korina-refactor-rx-descriptor-flags-processing.patch b/target/linux/rb532/patches-4.9/107-korina-refactor-rx-descriptor-flags-processing.patch
new file mode 100644
index 0000000000..80745f534d
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/107-korina-refactor-rx-descriptor-flags-processing.patch
@@ -0,0 +1,110 @@
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -363,59 +363,60 @@ static int korina_rx(struct net_device *
+ 		if ((KORINA_RBSIZE - (u32)DMA_COUNT(rd->control)) == 0)
+ 			break;
+ 
+-		/* Update statistics counters */
+-		if (devcs & ETH_RX_CRC)
+-			dev->stats.rx_crc_errors++;
+-		if (devcs & ETH_RX_LOR)
+-			dev->stats.rx_length_errors++;
+-		if (devcs & ETH_RX_LE)
+-			dev->stats.rx_length_errors++;
+-		if (devcs & ETH_RX_OVR)
+-			dev->stats.rx_fifo_errors++;
+-		if (devcs & ETH_RX_CV)
+-			dev->stats.rx_frame_errors++;
+-		if (devcs & ETH_RX_CES)
+-			dev->stats.rx_length_errors++;
+-		if (devcs & ETH_RX_MP)
+-			dev->stats.multicast++;
++		/* check that this is a whole packet
++		 * WARNING: DMA_FD bit incorrectly set
++		 * in Rc32434 (errata ref #077) */
++		if (!(devcs & ETH_RX_LD))
++			goto next;
+ 
+-		if ((devcs & ETH_RX_LD) != ETH_RX_LD) {
+-			/* check that this is a whole packet
+-			 * WARNING: DMA_FD bit incorrectly set
+-			 * in Rc32434 (errata ref #077) */
++		if (!(devcs & ETH_RX_ROK)) {
++			/* Update statistics counters */
+ 			dev->stats.rx_errors++;
+ 			dev->stats.rx_dropped++;
+-		} else if ((devcs & ETH_RX_ROK)) {
+-			pkt_len = RCVPKT_LENGTH(devcs);
++			if (devcs & ETH_RX_CRC)
++				dev->stats.rx_crc_errors++;
++			if (devcs & ETH_RX_LE)
++				dev->stats.rx_length_errors++;
++			if (devcs & ETH_RX_OVR)
++				dev->stats.rx_fifo_errors++;
++			if (devcs & ETH_RX_CV)
++				dev->stats.rx_frame_errors++;
++			if (devcs & ETH_RX_CES)
++				dev->stats.rx_frame_errors++;
+ 
+-			/* must be the (first and) last
+-			 * descriptor then */
+-			pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data;
+-
+-			/* invalidate the cache */
+-			dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4);
+-
+-			/* Malloc up new buffer. */
+-			skb_new = netdev_alloc_skb_ip_align(dev, KORINA_RBSIZE);
+-
+-			if (!skb_new)
+-				break;
+-			/* Do not count the CRC */
+-			skb_put(skb, pkt_len - 4);
+-			skb->protocol = eth_type_trans(skb, dev);
+-
+-			/* Pass the packet to upper layers */
+-			netif_receive_skb(skb);
+-			dev->stats.rx_packets++;
+-			dev->stats.rx_bytes += pkt_len;
+-
+-			/* Update the mcast stats */
+-			if (devcs & ETH_RX_MP)
+-				dev->stats.multicast++;
+-
+-			lp->rx_skb[lp->rx_next_done] = skb_new;
++			goto next;
+ 		}
+ 
++		pkt_len = RCVPKT_LENGTH(devcs);
++
++		/* must be the (first and) last
++		 * descriptor then */
++		pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data;
++
++		/* invalidate the cache */
++		dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4);
++
++		/* Malloc up new buffer. */
++		skb_new = netdev_alloc_skb_ip_align(dev, KORINA_RBSIZE);
++
++		if (!skb_new)
++			break;
++		/* Do not count the CRC */
++		skb_put(skb, pkt_len - 4);
++		skb->protocol = eth_type_trans(skb, dev);
++
++		/* Pass the packet to upper layers */
++		netif_receive_skb(skb);
++		dev->stats.rx_packets++;
++		dev->stats.rx_bytes += pkt_len;
++
++		/* Update the mcast stats */
++		if (devcs & ETH_RX_MP)
++			dev->stats.multicast++;
++
++		lp->rx_skb[lp->rx_next_done] = skb_new;
++
++next:
+ 		rd->devcs = 0;
+ 
+ 		/* Restore descriptor's curr_addr */
diff --git a/target/linux/rb532/patches-4.9/107-use-NAPI_POLL_WEIGHT.patch b/target/linux/rb532/patches-4.9/107-use-NAPI_POLL_WEIGHT.patch
new file mode 100644
index 0000000000..d4af90636f
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/107-use-NAPI_POLL_WEIGHT.patch
@@ -0,0 +1,11 @@
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -1082,7 +1082,7 @@ static int korina_probe(struct platform_
+ 	dev->netdev_ops = &korina_netdev_ops;
+ 	dev->ethtool_ops = &netdev_ethtool_ops;
+ 	dev->watchdog_timeo = TX_TIMEOUT;
+-	netif_napi_add(dev, &lp->napi, korina_poll, 64);
++	netif_napi_add(dev, &lp->napi, korina_poll, NAPI_POLL_WEIGHT);
+ 
+ 	lp->phy_addr = (((lp->rx_irq == 0x2c? 1:0) << 8) | 0x05);
+ 	lp->mii_if.dev = dev;
diff --git a/target/linux/rb532/patches-4.9/108-korina-use-gro.patch b/target/linux/rb532/patches-4.9/108-korina-use-gro.patch
new file mode 100644
index 0000000000..8cbe2a0777
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/108-korina-use-gro.patch
@@ -0,0 +1,11 @@
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -406,7 +406,7 @@ static int korina_rx(struct net_device *
+ 		skb->protocol = eth_type_trans(skb, dev);
+ 
+ 		/* Pass the packet to upper layers */
+-		netif_receive_skb(skb);
++		napi_gro_receive(&lp->napi, skb);
+ 		dev->stats.rx_packets++;
+ 		dev->stats.rx_bytes += pkt_len;
+ 
diff --git a/target/linux/rb532/patches-4.9/109-korina-whitespace-cleanup-2.patch b/target/linux/rb532/patches-4.9/109-korina-whitespace-cleanup-2.patch
new file mode 100644
index 0000000000..0265433951
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/109-korina-whitespace-cleanup-2.patch
@@ -0,0 +1,135 @@
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -64,9 +64,9 @@
+ #include <asm/mach-rc32434/eth.h>
+ #include <asm/mach-rc32434/dma_v.h>
+ 
+-#define DRV_NAME        "korina"
+-#define DRV_VERSION     "0.10"
+-#define DRV_RELDATE     "04Mar2008"
++#define DRV_NAME	"korina"
++#define DRV_VERSION	"0.10"
++#define DRV_RELDATE	"04Mar2008"
+ 
+ #define STATION_ADDRESS_HIGH(dev) (((dev)->dev_addr[0] << 8) | \
+ 				   ((dev)->dev_addr[1]))
+@@ -75,7 +75,7 @@
+ 				   ((dev)->dev_addr[4] << 8)  | \
+ 				   ((dev)->dev_addr[5]))
+ 
+-#define MII_CLOCK 1250000 	/* no more than 2.5MHz */
++#define MII_CLOCK	1250000 /* no more than 2.5MHz */
+ 
+ /* the following must be powers of two */
+ #define KORINA_NUM_RDS	64  /* number of receive descriptors */
+@@ -87,15 +87,19 @@
+ #define KORINA_RBSIZE	1536 /* size of one resource buffer = Ether MTU */
+ #define KORINA_RDS_MASK	(KORINA_NUM_RDS - 1)
+ #define KORINA_TDS_MASK	(KORINA_NUM_TDS - 1)
+-#define RD_RING_SIZE 	(KORINA_NUM_RDS * sizeof(struct dma_desc))
++#define RD_RING_SIZE	(KORINA_NUM_RDS * sizeof(struct dma_desc))
+ #define TD_RING_SIZE	(KORINA_NUM_TDS * sizeof(struct dma_desc))
+ 
+-#define TX_TIMEOUT 	(6000 * HZ / 1000)
++#define TX_TIMEOUT	(6000 * HZ / 1000)
+ 
+-enum chain_status { desc_filled, desc_empty };
+-#define IS_DMA_FINISHED(X)   (((X) & (DMA_DESC_FINI)) != 0)
+-#define IS_DMA_DONE(X)   (((X) & (DMA_DESC_DONE)) != 0)
+-#define RCVPKT_LENGTH(X)     (((X) & ETH_RX_LEN) >> ETH_RX_LEN_BIT)
++enum chain_status {
++	desc_filled,
++	desc_empty
++};
++
++#define IS_DMA_FINISHED(X)	(((X) & (DMA_DESC_FINI)) != 0)
++#define IS_DMA_DONE(X)		(((X) & (DMA_DESC_DONE)) != 0)
++#define RCVPKT_LENGTH(X)	(((X) & ETH_RX_LEN) >> ETH_RX_LEN_BIT)
+ 
+ /* Information that need to be kept for each board. */
+ struct korina_private {
+@@ -123,7 +127,7 @@ struct korina_private {
+ 	int rx_irq;
+ 	int tx_irq;
+ 
+-	spinlock_t lock;        /* NIC xmit lock */
++	spinlock_t lock;	/* NIC xmit lock */
+ 
+ 	int dma_halt_cnt;
+ 	int dma_run_cnt;
+@@ -146,17 +150,17 @@ static inline void korina_start_dma(stru
+ static inline void korina_abort_dma(struct net_device *dev,
+ 					struct dma_reg *ch)
+ {
+-       if (readl(&ch->dmac) & DMA_CHAN_RUN_BIT) {
+-	       writel(0x10, &ch->dmac);
++	if (readl(&ch->dmac) & DMA_CHAN_RUN_BIT) {
++		writel(0x10, &ch->dmac);
+ 
+-	       while (!(readl(&ch->dmas) & DMA_STAT_HALT))
+-		       netif_trans_update(dev);
++		while (!(readl(&ch->dmas) & DMA_STAT_HALT))
++			netif_trans_update(dev);
+ 
+-	       writel(0, &ch->dmas);
+-       }
++		writel(0, &ch->dmas);
++	}
+ 
+-       writel(0, &ch->dmadptr);
+-       writel(0, &ch->dmandptr);
++	writel(0, &ch->dmadptr);
++	writel(0, &ch->dmandptr);
+ }
+ 
+ static inline void korina_chain_dma(struct dma_reg *ch, u32 dma_addr)
+@@ -685,7 +689,7 @@ static int korina_ioctl(struct net_devic
+ 
+ /* ethtool helpers */
+ static void netdev_get_drvinfo(struct net_device *dev,
+-			struct ethtool_drvinfo *info)
++				struct ethtool_drvinfo *info)
+ {
+ 	struct korina_private *lp = netdev_priv(dev);
+ 
+@@ -727,10 +731,10 @@ static u32 netdev_get_link(struct net_de
+ }
+ 
+ static const struct ethtool_ops netdev_ethtool_ops = {
+-	.get_drvinfo            = netdev_get_drvinfo,
+-	.get_settings           = netdev_get_settings,
+-	.set_settings           = netdev_set_settings,
+-	.get_link               = netdev_get_link,
++	.get_drvinfo		= netdev_get_drvinfo,
++	.get_settings		= netdev_get_settings,
++	.set_settings		= netdev_set_settings,
++	.get_link		= netdev_get_link,
+ };
+ 
+ static int korina_alloc_ring(struct net_device *dev)
+@@ -862,7 +866,7 @@ static int korina_init(struct net_device
+ 	/* Management Clock Prescaler Divisor
+ 	 * Clock independent setting */
+ 	writel(((idt_cpu_freq) / MII_CLOCK + 1) & ~1,
+-		       &lp->eth_regs->ethmcp);
++			&lp->eth_regs->ethmcp);
+ 
+ 	/* don't transmit until fifo contains 48b */
+ 	writel(48, &lp->eth_regs->ethfifott);
+@@ -945,14 +949,14 @@ static int korina_open(struct net_device
+ 			0, "Korina ethernet Rx", dev);
+ 	if (ret < 0) {
+ 		printk(KERN_ERR "%s: unable to get Rx DMA IRQ %d\n",
+-		    dev->name, lp->rx_irq);
++			dev->name, lp->rx_irq);
+ 		goto err_release;
+ 	}
+ 	ret = request_irq(lp->tx_irq, korina_tx_dma_interrupt,
+ 			0, "Korina ethernet Tx", dev);
+ 	if (ret < 0) {
+ 		printk(KERN_ERR "%s: unable to get Tx DMA IRQ %d\n",
+-		    dev->name, lp->tx_irq);
++			dev->name, lp->tx_irq);
+ 		goto err_free_rx_irq;
+ 	}
+ 
diff --git a/target/linux/rb532/patches-4.9/110-korina-update-authors.patch b/target/linux/rb532/patches-4.9/110-korina-update-authors.patch
new file mode 100644
index 0000000000..843397cf37
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/110-korina-update-authors.patch
@@ -0,0 +1,17 @@
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -4,6 +4,7 @@
+  *  Copyright 2004 IDT Inc. (rischelp@idt.com)
+  *  Copyright 2006 Felix Fietkau <nbd@openwrt.org>
+  *  Copyright 2008 Florian Fainelli <florian@openwrt.org>
++ *  Copyright 2017 Roman Yeryomin <roman@advem.lv>
+  *
+  *  This program is free software; you can redistribute  it and/or modify it
+  *  under  the terms of  the GNU General  Public License as published by the
+@@ -1150,5 +1151,6 @@ module_platform_driver(korina_driver);
+ MODULE_AUTHOR("Philip Rischel <rischelp@idt.com>");
+ MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
+ MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
++MODULE_AUTHOR("Roman Yeryomin <roman@advem.lv>");
+ MODULE_DESCRIPTION("IDT RC32434 (Korina) Ethernet driver");
+ MODULE_LICENSE("GPL");
diff --git a/target/linux/rb532/patches-4.9/111-korina-version-bump.patch b/target/linux/rb532/patches-4.9/111-korina-version-bump.patch
new file mode 100644
index 0000000000..1501e174b1
--- /dev/null
+++ b/target/linux/rb532/patches-4.9/111-korina-version-bump.patch
@@ -0,0 +1,13 @@
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -66,8 +66,8 @@
+ #include <asm/mach-rc32434/dma_v.h>
+ 
+ #define DRV_NAME	"korina"
+-#define DRV_VERSION	"0.10"
+-#define DRV_RELDATE	"04Mar2008"
++#define DRV_VERSION	"0.20"
++#define DRV_RELDATE	"15Sep2017"
+ 
+ #define STATION_ADDRESS_HIGH(dev) (((dev)->dev_addr[0] << 8) | \
+ 				   ((dev)->dev_addr[1]))