diff --git a/lib/Makefile b/lib/Makefile index 7a713a54dcc53595fb7d854354ec9581bb8101f5..6b7b9ce85c54789fe9dbd1bffeb60149cef7daf1 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -78,7 +78,7 @@ endif ifdef CONFIG_SPL_BUILD obj-$(CONFIG_SPL_YMODEM_SUPPORT) += crc16.o obj-$(CONFIG_$(SPL_TPL_)HASH_SUPPORT) += crc16.o -obj-$(CONFIG_SPL_NET_SUPPORT) += net_utils.o +obj-y += net_utils.o endif obj-$(CONFIG_ADDR_MAP) += addr_map.o obj-y += qsort.o diff --git a/lib/net_utils.c b/lib/net_utils.c index ed5044c3deca90a05fee272cf119c4a4512dd2ed..8af77829705db9f5b3fefc45c2027d4358e5b54c 100644 --- a/lib/net_utils.c +++ b/lib/net_utils.c @@ -56,3 +56,51 @@ void string_to_enetaddr(const char *addr, uint8_t *enetaddr) addr = (*end) ? end + 1 : end; } } + +uint compute_ip_checksum(const void *vptr, uint nbytes) +{ + int sum, oddbyte; + const unsigned short *ptr = vptr; + + sum = 0; + while (nbytes > 1) { + sum += *ptr++; + nbytes -= 2; + } + if (nbytes == 1) { + oddbyte = 0; + ((u8 *)&oddbyte)[0] = *(u8 *)ptr; + ((u8 *)&oddbyte)[1] = 0; + sum += oddbyte; + } + sum = (sum >> 16) + (sum & 0xffff); + sum += (sum >> 16); + sum = ~sum & 0xffff; + + return sum; +} + +uint add_ip_checksums(uint offset, uint sum, uint new) +{ + ulong checksum; + + sum = ~sum & 0xffff; + new = ~new & 0xffff; + if (offset & 1) { + /* + * byte-swap the sum if it came from an odd offset; since the + * computation is endian-independent this works. + */ + new = ((new >> 8) & 0xff) | ((new << 8) & 0xff00); + } + checksum = sum + new; + if (checksum > 0xffff) + checksum -= 0xffff; + + return (~checksum) & 0xffff; +} + +int ip_checksum_ok(const void *addr, uint nbytes) +{ + return !(compute_ip_checksum(addr, nbytes) & 0xfffe); +} diff --git a/net/Makefile b/net/Makefile index 2a700c8401c4c1e84f45dafa17b08db80a7709e7..fef71b940a0fa45b853ec5e6a3b27c7b126f22d8 100644 --- a/net/Makefile +++ b/net/Makefile @@ -5,7 +5,6 @@ #ccflags-y += -DDEBUG -obj-y += checksum.o obj-$(CONFIG_NET) += arp.o obj-$(CONFIG_CMD_BOOTP) += bootp.o obj-$(CONFIG_CMD_CDP) += cdp.o diff --git a/net/checksum.c b/net/checksum.c deleted file mode 100644 index 16ef41635676e1cf7673aaca8a0ae5e019e2c36c..0000000000000000000000000000000000000000 --- a/net/checksum.c +++ /dev/null @@ -1,59 +0,0 @@ -// SPDX-License-Identifier: BSD-2-Clause -/* - * This file was originally taken from the FreeBSD project. - * - * Copyright (c) 2001 Charles Mott <cm@linktel.net> - * Copyright (c) 2008 coresystems GmbH - * All rights reserved. - */ - -#include <common.h> -#include <net.h> - -unsigned compute_ip_checksum(const void *vptr, unsigned nbytes) -{ - int sum, oddbyte; - const unsigned short *ptr = vptr; - - sum = 0; - while (nbytes > 1) { - sum += *ptr++; - nbytes -= 2; - } - if (nbytes == 1) { - oddbyte = 0; - ((u8 *)&oddbyte)[0] = *(u8 *)ptr; - ((u8 *)&oddbyte)[1] = 0; - sum += oddbyte; - } - sum = (sum >> 16) + (sum & 0xffff); - sum += (sum >> 16); - sum = ~sum & 0xffff; - - return sum; -} - -unsigned add_ip_checksums(unsigned offset, unsigned sum, unsigned new) -{ - unsigned long checksum; - - sum = ~sum & 0xffff; - new = ~new & 0xffff; - if (offset & 1) { - /* - * byte-swap the sum if it came from an odd offset; since the - * computation is endian independant this works. - */ - new = ((new >> 8) & 0xff) | ((new << 8) & 0xff00); - } - checksum = sum + new; - if (checksum > 0xffff) - checksum -= 0xffff; - - return (~checksum) & 0xffff; -} - -int ip_checksum_ok(const void *addr, unsigned nbytes) -{ - return !(compute_ip_checksum(addr, nbytes) & 0xfffe); -}