Fix previous commit 8bda0af

Fix #294

Previous commit was incomplete.

CHANGELOG

@@ -312,9 +312,3 @@ WinDivert 2.2.0
     - Implement new packet parser that correctly handles IP fragments.
     - Add a new "fragment" filter field that matches IP fragments.
     - (Un)Loading the WinDivert driver will cause a system event to be logged.
-WinDivert 2.2.1
-    - Fix potential driver deadlock on user-mode program crash.
-    - Fix filter language simplification bug.
-    - Fix Flow.EndpointId containing junk data.
-WinDivert 2.2.2
-    - Fix potential WinDivertClose() BSOD for WINDIVERT_LAYER_FLOW handles.

README

@@ -5,7 +5,7 @@ WinDivert 2.2: Windows Packet Divert
 ---------------
 
 Windows Packet Divert (WinDivert) is a user-mode packet interception library
-for Windows 10, Windows 11, and Windows Server.
+for Windows 7, Windows 8 and Windows 10.
 
 WinDivert enables user-mode capturing/modifying/dropping of network packets
 sent to/from the Windows network stack.  In summary, WinDivert can:

VERSION

@@ -1 +1 @@
-2.2.2
+2.2.0

dll/windivert.c

@@ -479,7 +479,6 @@ HANDLE WinDivertOpen(const char *filter, WINDIVERT_LAYER layer, INT16 priority,
     // Parameter checking:
     switch (layer)
     {
-        case WINDIVERT_LAYER_ETHERNET:
         case WINDIVERT_LAYER_NETWORK:
         case WINDIVERT_LAYER_NETWORK_FORWARD:
         case WINDIVERT_LAYER_FLOW:

dll/windivert.def

@@ -13,10 +13,8 @@ EXPORTS
     WinDivertHelperDecrementTTL
     WinDivertHelperHashPacket
     WinDivertHelperParsePacket
-    WinDivertHelperParseMACAddress
     WinDivertHelperParseIPv4Address
     WinDivertHelperParseIPv6Address
-    WinDivertHelperFormatMACAddress
     WinDivertHelperFormatIPv4Address
     WinDivertHelperFormatIPv6Address
     WinDivertHelperCompileFilter
@@ -28,8 +26,6 @@ EXPORTS
     WinDivertHelperHtonl
     WinDivertHelperNtohll
     WinDivertHelperHtonll
-    WinDivertHelperNtohMACAddress
-    WinDivertHelperHtonMACAddress
     WinDivertHelperNtohIPv6Address
     WinDivertHelperHtonIPv6Address
     WinDivertHelperNtohIpv6Address

dll/windivert_hash.c

@@ -1,6 +1,6 @@
 /*
  * windivert_hash.c
- * (C) 2023, all rights reserved,
+ * (C) 2019, all rights reserved,
  *
  * This file is part of WinDivert.
  *
@@ -66,7 +66,6 @@
  *   "seed" value.
  * - The input sized is fixed to 32bytes (excluding the seed), so there is
  *   only ever a single round.  As such, the algorithm has been specialized.
- * - [ETHERNET] uses an additional "pseudo-round" for the ethernet header.
  */
 
 #define WINDIVERT_ROTL64(x, r)  (((x) << (r)) | ((x) >> (64 - (r))))
@@ -105,16 +104,11 @@ static UINT64 WinDivertXXH64Avalanche(UINT64 h64)
 /*
  * WinDivert packet hash function.
  */
-static UINT64 WinDivertHashPacket(
-    UINT64 seed,
-    const WINDIVERT_ETHHDR *eth_header,
-    const WINDIVERT_ARPHDR *arp_header,
-    const WINDIVERT_IPHDR *ip_header,
-    const WINDIVERT_IPV6HDR *ipv6_header,
+static UINT64 WinDivertHashPacket(UINT64 seed,
+    const WINDIVERT_IPHDR *ip_header, const WINDIVERT_IPV6HDR *ipv6_header,
     const WINDIVERT_ICMPHDR *icmp_header,
     const WINDIVERT_ICMPV6HDR *icmpv6_header,
-    const WINDIVERT_TCPHDR *tcp_header,
-    const WINDIVERT_UDPHDR *udp_header)
+    const WINDIVERT_TCPHDR *tcp_header, const WINDIVERT_UDPHDR *udp_header)
 {
     UINT64 h64, v1, v2, v3, v4, v[4];
     const UINT64 *data64;
@@ -148,17 +142,8 @@ static UINT64 WinDivertHashPacket(
         v[1] = data64[4] ^ padding64[5];
         i = 2;
     }
-    else if (eth_header != NULL)
-    {
-        v2 = padding64[1];
-        v3 = padding64[2];
-        v4 = padding64[3];
-        i = 0;
-    }
     else
-    {
         return 0;
-    }
 
     if (tcp_header != NULL)
     {
@@ -204,21 +189,6 @@ static UINT64 WinDivertHashPacket(
     v2 = WinDivertXXH64Round(v[1], v2);
     v3 = WinDivertXXH64Round(v[2], v3);
     v4 = WinDivertXXH64Round(v[3], v4);
-
-    // Ethernet-layer pseudo-round:
-    if (eth_header != NULL)
-    {
-        data64 = (const UINT64 *)eth_header->DstAddr;
-        v1 = WinDivertXXH64Round(v1, data64[0] & 0xFFFFFFFFFFFFull);
-        data64 = (const UINT64 *)eth_header->SrcAddr;
-        v2 = WinDivertXXH64Round(v2, data64[0]);
-        if (arp_header != NULL)
-        {
-            data64 = (const UINT64 *)arp_header;
-            v3 = WinDivertXXH64Round(v3, data64[0]);
-        }
-    }
-
     h64 = WINDIVERT_ROTL64(v1, 1) + WINDIVERT_ROTL64(v2, 7) +
           WINDIVERT_ROTL64(v3, 12) + WINDIVERT_ROTL64(v4, 18);
     h64 = WinDivertXXH64MergeRound(h64, v1);

examples/netdump/netdump.c

@@ -1,6 +1,6 @@
 /*
  * netdump.c
- * (C) 2023, all rights reserved,
+ * (C) 2019, all rights reserved,
  *
  * This file is part of WinDivert.
  *
@@ -37,7 +37,7 @@
  * This is a simple traffic monitor.  It uses a WinDivert handle in SNIFF mode.
  * The SNIFF mode copies packets and does not block the original.
  *
- * usage: netdump.exe windivert-filter [priority] [layer]
+ * usage: netdump.exe windivert-filter [priority]
  *
  */
 
@@ -60,23 +60,18 @@
 int __cdecl main(int argc, char **argv)
 {
     HANDLE handle, console;
-    DWORD err;
     UINT i;
-    WINDIVERT_LAYER layer = WINDIVERT_LAYER_NETWORK;
     INT16 priority = 0;
     unsigned char packet[MAXBUF];
-    UINT packet_len, arp_len;
+    UINT packet_len;
     WINDIVERT_ADDRESS addr;
-    PWINDIVERT_ETHHDR eth_header;
-    PWINDIVERT_ARPHDR arp_header;
     PWINDIVERT_IPHDR ip_header;
     PWINDIVERT_IPV6HDR ipv6_header;
     PWINDIVERT_ICMPHDR icmp_header;
     PWINDIVERT_ICMPV6HDR icmpv6_header;
     PWINDIVERT_TCPHDR tcp_header;
     PWINDIVERT_UDPHDR udp_header;
-    UINT8 src_mac[6], dst_mac[6], *mac_ptr;
-    UINT32 src_addr[4], dst_addr[4], *ip_ptr;
+    UINT32 src_addr[4], dst_addr[4];
     UINT64 hash;
     char src_str[INET6_ADDRSTRLEN+1], dst_str[INET6_ADDRSTRLEN+1];
     const char *err_str;
@@ -86,44 +81,19 @@ int __cdecl main(int argc, char **argv)
     // Check arguments.
     switch (argc)
     {
-        case 4:
-            if (strcmp(argv[3], "network") == 0)
-            {
-                layer = WINDIVERT_LAYER_NETWORK;
-            }
-            else if (strcmp(argv[3], "forward") == 0)
-            {
-                layer = WINDIVERT_LAYER_NETWORK_FORWARD;
-            }
-            else if (strcmp(argv[3], "ethernet") == 0)
-            {
-                layer = WINDIVERT_LAYER_ETHERNET;
-            }
-            else
-            {
-                goto usage;
-            }
-            // Fallthrough
-        case 3:
-            priority = (INT16)atoi(argv[2]);
-            // Fallthrough
         case 2:
             break;
+        case 3:
+            priority = (INT16)atoi(argv[2]);
+            break;
         default:
-        usage:
-            fprintf(stderr, "usage: %s windivert-filter [priority] [layer]\n\n",
+            fprintf(stderr, "usage: %s windivert-filter [priority]\n",
                 argv[0]);
-            fprintf(stderr, "where:\n");
-            fprintf(stderr, "\t- priority is an integer between "
-                "-30000..30000 (default = %d)\n", (int)priority);
-            fprintf(stderr, "\t- layer is one of ethernet/network/forward "
-                "(default = network)\n\n");
             fprintf(stderr, "examples:\n");
             fprintf(stderr, "\t%s true\n", argv[0]);
-            fprintf(stderr, "\t%s \"outbound and tcp.DstPort == 80\" 1000 "
-                "network\n", argv[0]);
-            fprintf(stderr, "\t%s \"inbound and tcp.Syn\" -400 ethernet\n",
+            fprintf(stderr, "\t%s \"outbound and tcp.DstPort == 80\" 1000\n",
                 argv[0]);
+            fprintf(stderr, "\t%s \"inbound and tcp.Syn\" -400\n", argv[0]);
             exit(EXIT_FAILURE);
     }
 
@@ -131,19 +101,19 @@ int __cdecl main(int argc, char **argv)
     console = GetStdHandle(STD_OUTPUT_HANDLE);
 
     // Divert traffic matching the filter:
-    handle = WinDivertOpen(argv[1], layer, priority, WINDIVERT_FLAG_SNIFF);
+    handle = WinDivertOpen(argv[1], WINDIVERT_LAYER_NETWORK, priority,
+        WINDIVERT_FLAG_SNIFF | WINDIVERT_FLAG_FRAGMENTS);
     if (handle == INVALID_HANDLE_VALUE)
     {
-        err = GetLastError();
-        if (err == ERROR_INVALID_PARAMETER &&
-            !WinDivertHelperCompileFilter(argv[1], layer, NULL, 0, &err_str,
-                NULL))
+        if (GetLastError() == ERROR_INVALID_PARAMETER &&
+            !WinDivertHelperCompileFilter(argv[1], WINDIVERT_LAYER_NETWORK,
+                NULL, 0, &err_str, NULL))
         {
             fprintf(stderr, "error: invalid filter \"%s\"\n", err_str);
             exit(EXIT_FAILURE);
         }
         fprintf(stderr, "error: failed to open the WinDivert device (%d)\n",
-            err);
+            GetLastError());
         exit(EXIT_FAILURE);
     }
 
@@ -186,104 +156,24 @@ int __cdecl main(int argc, char **argv)
         }
 
         // Print info about the matching packet.
-        WinDivertHelperParsePacket(packet, packet_len, addr.Layer,
-            &eth_header, &arp_header, &ip_header, &ipv6_header, NULL,
-            &icmp_header, &icmpv6_header, &tcp_header, &udp_header, NULL,
-            NULL);
+        WinDivertHelperParsePacket(packet, packet_len, &ip_header, &ipv6_header,
+            NULL, &icmp_header, &icmpv6_header, &tcp_header, &udp_header, NULL,
+            NULL, NULL, NULL);
+        if (ip_header == NULL && ipv6_header == NULL)
+        {
+            fprintf(stderr, "warning: junk packet\n");
+        }
 
         // Dump packet info: 
         putchar('\n');
         SetConsoleTextAttribute(console, FOREGROUND_RED);
         time_passed = (double)(addr.Timestamp - base.QuadPart) /
             (double)freq.QuadPart;
-        hash = WinDivertHelperHashPacket(packet, packet_len, addr.Layer, 0);
-        if (eth_header != NULL)
-        {
-            printf("Packet [Timestamp=%.8g Length=%u Direction=%s IfIdx=%u "
-                "SubIfIdx=%u Hash=0x%.16llX]\n",
-                time_passed, packet_len, (addr.Outbound? "outbound": "inbound"),
-                addr.Ethernet.IfIdx, addr.Ethernet.SubIfIdx, hash);
-            WinDivertHelperNtohMACAddress(eth_header->SrcAddr, src_mac);
-            WinDivertHelperNtohMACAddress(eth_header->DstAddr, dst_mac);
-            WinDivertHelperFormatMACAddress(src_mac, src_str, sizeof(src_str));
-            WinDivertHelperFormatMACAddress(dst_mac, dst_str, sizeof(dst_str));
-            SetConsoleTextAttribute(console,
-                FOREGROUND_GREEN | FOREGROUND_BLUE);
-            printf("Ethernet [SrcAddr=%s DstAddr=%s Type=0x%.4X]\n",
-                src_str, dst_str, ntohs(eth_header->Type));
-            if (arp_header != NULL)
-            {
-                arp_len = packet_len - sizeof(WINDIVERT_ETHHDR);
-                SetConsoleTextAttribute(console,
-                    FOREGROUND_GREEN);
-                printf("ARP [Hardware=%u Protocol=%u HardLength=%u "
-                    "ProtLength=%u Opcode=%u",
-                    ntohs(arp_header->Hardware), ntohs(arp_header->Protocol),
-                    arp_header->HardLength, arp_header->ProtLength,
-                    ntohs(arp_header->Opcode));
-                mac_ptr = WINDIVERT_ARPHDR_GET_SRCMACADDR_PTR(arp_header,
-                    arp_len);
-                if (mac_ptr != NULL)
-                {
-                    WinDivertHelperNtohMACAddress(mac_ptr, src_mac);
-                    WinDivertHelperFormatMACAddress(src_mac, src_str,
-                        sizeof(src_str));
-                    printf(" SrcHardAddr=%s", src_str);
-                }
-                ip_ptr = WINDIVERT_ARPHDR_GET_SRCIPV4ADDR_PTR(arp_header,
-                    arp_len);
-                if (ip_ptr != NULL)
-                {
-                    WinDivertHelperFormatIPv4Address(ntohl(ip_ptr[0]),
-                        src_str, sizeof(src_str));
-                    printf(" SrcProtAddr=%s", src_str);
-                }
-                ip_ptr = WINDIVERT_ARPHDR_GET_SRCIPV6ADDR_PTR(arp_header,
-                    arp_len);
-                if (ip_ptr != NULL)
-                {
-                    WinDivertHelperNtohIPv6Address(ip_ptr, src_addr);
-                    WinDivertHelperFormatIPv6Address(src_addr, src_str,
-                        sizeof(src_str));
-                    printf(" SrcProtAddr=%s", src_str);
-                }
-                mac_ptr = WINDIVERT_ARPHDR_GET_DSTMACADDR_PTR(arp_header,
-                    arp_len);
-                if (mac_ptr != NULL)
-                {
-                    WinDivertHelperNtohMACAddress(mac_ptr, dst_mac);
-                    WinDivertHelperFormatMACAddress(dst_mac, dst_str,
-                        sizeof(dst_str));
-                    printf(" DstHardAddr=%s", dst_str);
-                }
-                ip_ptr = WINDIVERT_ARPHDR_GET_DSTIPV4ADDR_PTR(arp_header,
-                    arp_len);
-                if (ip_ptr != NULL)
-                {
-                    WinDivertHelperFormatIPv4Address(ntohl(ip_ptr[0]),
-                        dst_str, sizeof(dst_str));
-                    printf(" DstProtAddr=%s", dst_str);
-                }
-                ip_ptr = WINDIVERT_ARPHDR_GET_DSTIPV6ADDR_PTR(arp_header,
-                    arp_len);
-                if (ip_ptr != NULL)
-                {
-                    WinDivertHelperNtohIPv6Address(ip_ptr, dst_addr);
-                    WinDivertHelperFormatIPv6Address(dst_addr, dst_str,
-                        sizeof(dst_str));
-                    printf(" DstProtAddr=%s", dst_str);
-                }
-                printf("]\n");
-            }
-        }
-        else
-        {
-            printf("Packet [Timestamp=%.8g Length=%u Direction=%s IfIdx=%u "
-                "SubIfIdx=%u Loopback=%u Hash=0x%.16llX]\n",
-                time_passed, packet_len, (addr.Outbound? "outbound": "inbound"),
-                addr.Network.IfIdx, addr.Network.SubIfIdx, addr.Loopback,
-                hash);
-        }
+        hash = WinDivertHelperHashPacket(packet, packet_len, 0);
+        printf("Packet [Timestamp=%.8g, Direction=%s IfIdx=%u SubIfIdx=%u "
+            "Loopback=%u Hash=0x%.16llX]\n",
+            time_passed, (addr.Outbound?  "outbound": "inbound"),
+            addr.Network.IfIdx, addr.Network.SubIfIdx, addr.Loopback, hash);
         if (ip_header != NULL)
         {
             WinDivertHelperFormatIPv4Address(ntohl(ip_header->SrcAddr),

examples/netfilter/netfilter.c

@@ -1,6 +1,6 @@
 /*
  * netfilter.c
- * (C) 2023, all rights reserved,
+ * (C) 2019, all rights reserved,
  *
  * This file is part of WinDivert.
  *
@@ -201,9 +201,9 @@ int __cdecl main(int argc, char **argv)
         }
        
         // Print info about the matching packet.
-        WinDivertHelperParsePacket(packet, packet_len, recv_addr.Layer, NULL,
-            NULL, &ip_header, &ipv6_header, NULL, &icmp_header, &icmpv6_header,
-            &tcp_header, &udp_header, NULL, &payload_len);
+        WinDivertHelperParsePacket(packet, packet_len, &ip_header, &ipv6_header,
+            NULL, &icmp_header, &icmpv6_header, &tcp_header, &udp_header, NULL,
+            &payload_len, NULL, NULL);
         if (ip_header == NULL && ipv6_header == NULL)
         {
             continue;
@@ -290,7 +290,7 @@ int __cdecl main(int argc, char **argv)
                 memcpy(&send_addr, &recv_addr, sizeof(send_addr));
                 send_addr.Outbound = !recv_addr.Outbound;
                 WinDivertHelperCalcChecksums((PVOID)reset, sizeof(TCPPACKET),
-                    WINDIVERT_LAYER_NETWORK, &send_addr, 0);
+                    &send_addr, 0);
                 if (!WinDivertSend(handle, (PVOID)reset, sizeof(TCPPACKET),
                         NULL, &send_addr))
                 {
@@ -317,8 +317,7 @@ int __cdecl main(int argc, char **argv)
                 memcpy(&send_addr, &recv_addr, sizeof(send_addr));
                 send_addr.Outbound = !recv_addr.Outbound;
                 WinDivertHelperCalcChecksums((PVOID)resetv6,
-                    sizeof(TCPV6PACKET), WINDIVERT_LAYER_NETWORK, &send_addr,
-                    0);
+                    sizeof(TCPV6PACKET), &send_addr, 0);
                 if (!WinDivertSend(handle, (PVOID)resetv6, sizeof(TCPV6PACKET),
                         NULL, &send_addr))
                 {
@@ -344,7 +343,7 @@ int __cdecl main(int argc, char **argv)
                 memcpy(&send_addr, &recv_addr, sizeof(send_addr));
                 send_addr.Outbound = !recv_addr.Outbound;
                 WinDivertHelperCalcChecksums((PVOID)dnr, icmp_length,
-                    WINDIVERT_LAYER_NETWORK, &send_addr, 0);
+                    &send_addr, 0);
                 if (!WinDivertSend(handle, (PVOID)dnr, icmp_length, NULL,
                         &send_addr))
                 {
@@ -367,7 +366,7 @@ int __cdecl main(int argc, char **argv)
                 memcpy(&send_addr, &recv_addr, sizeof(send_addr));
                 send_addr.Outbound = !recv_addr.Outbound;
                 WinDivertHelperCalcChecksums((PVOID)dnrv6, icmpv6_length,
-                    WINDIVERT_LAYER_NETWORK, &send_addr, 0);
+                    &send_addr, 0);
                 if (!WinDivertSend(handle, (PVOID)dnrv6, icmpv6_length,
                         NULL, &send_addr))
                 {

examples/passthru/passthru.c

@@ -38,7 +38,6 @@
  * useful for performance testing.
  *
  * usage: passthru.exe [windivert-filter] [num-threads] [batch-size] [priority]
- *                     [layer]
  */
 
 #include <winsock2.h>
@@ -48,162 +47,69 @@
 
 #include "windivert.h"
 
+#define MTU 1500
+
+typedef struct
+{
+    HANDLE handle;
+    int batch;
+} CONFIG, *PCONFIG;
+
 static DWORD passthru(LPVOID arg);
 
-/*
- * Options.
- */
-static int threads           = 1;
-static int batch             = WINDIVERT_BATCH_MAX;
-static int priority          = 0;
-static WINDIVERT_LAYER layer = WINDIVERT_LAYER_NETWORK;
-static int size              = (0x10000 + 4096);
-
-/*
- * Print usage and exit.
- */
-static void usage(const char *prog)
-{
-    fprintf(stderr, "usage: %s [OPTIONS] filter-string\n\n", prog);
-    fprintf(stderr, "OPTIONS:\n");
-    fprintf(stderr, "\t--batch N\n");
-    fprintf(stderr, "\t\tSet the batch size to N (default=%u)\n",
-        WINDIVERT_BATCH_MAX);
-    fprintf(stderr, "\t--layer LAYER\n");
-    fprintf(stderr, "\t\tSet the filter layer to LAYER (default=network).\n");
-    fprintf(stderr, "\t\tValid values are {ethernet,network,forward}.\n");
-    fprintf(stderr, "\t--priority N\n");
-    fprintf(stderr, "\t\tSet the filter priority to N (default=0)\n");
-    fprintf(stderr, "\t--size N\n");
-    fprintf(stderr, "\t\tSet the buffer size to N (default=%u)\n",
-        (0x10000 + 4096));
-    fprintf(stderr, "\t--threads N\n");
-    fprintf(stderr, "\t\tSet the number of threads to be N (default=1)\n");
-    exit(EXIT_FAILURE);
-}
-
-/*
- * Parse options.
- */
-static const char *parse_options(int argc, char **argv)
-{
-    int i;
-    size_t n;
-    const char *filter = NULL, *opt, *arg;
-
-    for (i = 1; i < argc; i++)
-    {
-        opt = argv[i];
-        if (opt[0] != '-' || opt[1] != '-')
-        {
-            if (filter != NULL)
-            {
-                usage(argv[0]);
-            }
-            filter = opt;
-            continue;
-        }
-        opt += 2;
-        arg = strchr(opt, '=');
-        if (arg == NULL)
-        {
-            i++;
-            if (i >= argc)
-            {
-                usage(argv[0]);
-            }
-            arg = argv[i];
-            n = strlen(opt);
-        }
-        else
-        {
-            n = arg - opt;
-            arg++;
-        }
-        if (strncmp(opt, "threads", n) == 0)
-        {
-            threads = atoi(arg);
-        }
-        else if (strncmp(opt, "batch", n) == 0)
-        {
-            batch = atoi(arg);
-        }
-        else if (strncmp(opt, "priority", n) == 0)
-        {
-            priority = atoi(arg);
-        }
-        else if (strncmp(opt, "size", n) == 0)
-        {
-            size = atoi(arg);
-        }
-        else if (strncmp(opt, "layer", n) == 0)
-        {
-            if (strcmp(arg, "ethernet") == 0)
-            {
-                layer = WINDIVERT_LAYER_ETHERNET;
-            }
-            else if (strcmp(arg, "network") == 0)
-            {
-                layer = WINDIVERT_LAYER_NETWORK;
-            }
-            else if (strcmp(arg, "forward") == 0)
-            {
-                layer = WINDIVERT_LAYER_NETWORK_FORWARD;
-            }
-            else
-            {
-                usage(argv[0]);
-            }
-        }
-        else
-        {
-            usage(argv[0]);
-        }
-    }
-    return (filter == NULL? "true": filter);
-}
-
 /*
  * Entry.
  */
 int __cdecl main(int argc, char **argv)
 {
-    const char *filter;
+    const char *filter = "true";
+    int threads = 1, batch = 1, priority = 0;
     int i;
     HANDLE handle, thread;
+    CONFIG config;
 
-    filter = parse_options(argc, argv);
-
-    if (threads < 1 || threads > 64)
+    if (argc > 5)
     {
-        fprintf(stderr, "error: number of threads must be within "
-            "the range 1..64, found %d\n", threads);
+        fprintf(stderr, "usage: %s [filter] [num-threads] [batch-size] "
+            "[priority]\n", argv[0]);
         exit(EXIT_FAILURE);
     }
-    if (batch < 1 || batch > WINDIVERT_BATCH_MAX)
+    if (argc >= 2)
     {
-        fprintf(stderr, "error: batch size must be within the range 1..%u, "
-            "found %d\n", WINDIVERT_BATCH_MAX, batch);
-        exit(EXIT_FAILURE);
+        filter = argv[1];
     }
-    if (priority < WINDIVERT_PRIORITY_LOWEST ||
-        priority > WINDIVERT_PRIORITY_HIGHEST)
+    if (argc >= 3)
     {
-        fprintf(stderr, "error: priority must be within the range %d..%d, "
-            "found %d\n", WINDIVERT_PRIORITY_LOWEST,
-            WINDIVERT_PRIORITY_HIGHEST, priority);
-        exit(EXIT_FAILURE);
+        threads = atoi(argv[2]);
+        if (threads < 1 || threads > 64)
+        {
+            fprintf(stderr, "error: invalid number of threads\n");
+            exit(EXIT_FAILURE);
+        }
     }
-    if (size < 1 || size >= WINDIVERT_BATCH_MAX * WINDIVERT_MTU_MAX)
+    if (argc >= 4)
     {
-        fprintf(stderr, "error: buffer size must be within the range 1..%d, "
-            "found %d\n", WINDIVERT_BATCH_MAX * WINDIVERT_MTU_MAX,
-            size);
-        exit(EXIT_FAILURE);
+        batch = atoi(argv[3]);
+        if (batch <= 0 || batch > WINDIVERT_BATCH_MAX)
+        {
+            fprintf(stderr, "error: invalid batch size\n");
+            exit(EXIT_FAILURE);
+        }
+    }
+    if (argc >= 5)
+    {
+        priority = atoi(argv[4]);
+        if (priority < WINDIVERT_PRIORITY_LOWEST ||
+            priority > WINDIVERT_PRIORITY_HIGHEST)
+        {
+            fprintf(stderr, "error: invalid priority value\n");
+            exit(EXIT_FAILURE);
+        }
     }
 
     // Divert traffic matching the filter:
-    handle = WinDivertOpen(filter, layer, (INT16)priority, 0);
+    handle = WinDivertOpen(filter, WINDIVERT_LAYER_NETWORK, (INT16)priority,
+        0);
     if (handle == INVALID_HANDLE_VALUE)
     {
         if (GetLastError() == ERROR_INVALID_PARAMETER)
@@ -217,10 +123,12 @@ int __cdecl main(int argc, char **argv)
     }
 
     // Start the threads
+    config.handle = handle;
+    config.batch = batch;
     for (i = 1; i < threads; i++)
     {
         thread = CreateThread(NULL, 1, (LPTHREAD_START_ROUTINE)passthru,
-            (LPVOID)handle, 0, NULL);
+            (LPVOID)&config, 0, NULL);
         if (thread == NULL)
         {
             fprintf(stderr, "error: failed to start passthru thread (%d)\n",
@@ -230,8 +138,8 @@ int __cdecl main(int argc, char **argv)
     }
 
     // Main thread:
-    passthru((LPVOID)handle);
-    
+    passthru((LPVOID)&config);
+
     return 0;
 }
 
@@ -239,11 +147,19 @@ int __cdecl main(int argc, char **argv)
 static DWORD passthru(LPVOID arg)
 {
     UINT8 *packet;
-    UINT packet_len, addr_len;
+    UINT packet_len, recv_len, addr_len;
     WINDIVERT_ADDRESS *addr;
-    HANDLE handle = (HANDLE)arg;
+    PCONFIG config = (PCONFIG)arg;
+    HANDLE handle;
+    int batch;
 
-    packet = (UINT8 *)malloc(size);
+    handle = config->handle;
+    batch = config->batch;
+
+    packet_len = batch * MTU;
+    packet_len =
+        (packet_len < WINDIVERT_MTU_MAX? WINDIVERT_MTU_MAX: packet_len);
+    packet = (UINT8 *)malloc(packet_len);
     addr = (WINDIVERT_ADDRESS *)malloc(batch * sizeof(WINDIVERT_ADDRESS));
     if (packet == NULL || addr == NULL)
     {
@@ -257,7 +173,7 @@ static DWORD passthru(LPVOID arg)
     {
         // Read a matching packet.
         addr_len = batch * sizeof(WINDIVERT_ADDRESS);
-        if (!WinDivertRecvEx(handle, packet, size, &packet_len, 0,
+        if (!WinDivertRecvEx(handle, packet, packet_len, &recv_len, 0,
                 addr, &addr_len, NULL))
         {
             fprintf(stderr, "warning: failed to read packet (%d)\n",
@@ -266,7 +182,7 @@ static DWORD passthru(LPVOID arg)
         }
 
         // Re-inject the matching packet.
-        if (!WinDivertSendEx(handle, packet, packet_len, NULL, 0, addr,
+        if (!WinDivertSendEx(handle, packet, recv_len, NULL, 0, addr,
                 addr_len, NULL))
         {
             fprintf(stderr, "warning: failed to reinject packet (%d)\n",

examples/streamdump/streamdump.c

@@ -1,6 +1,6 @@
 /*
  * streamdump.c
- * (C) 2023, all rights reserved,
+ * (C) 2019, all rights reserved,
  *
  * This file is part of WinDivert.
  *
@@ -193,8 +193,8 @@ int __cdecl main(int argc, char **argv)
             continue;
         }
 
-        WinDivertHelperParsePacket(packet, packet_len, addr.Layer, NULL, NULL,
-            &ip_header, NULL, NULL, NULL, NULL, &tcp_header, NULL, NULL, NULL);
+        WinDivertHelperParsePacket(packet, packet_len, &ip_header, NULL, NULL,
+            NULL, NULL, &tcp_header, NULL, NULL, NULL, NULL, NULL);
         if (ip_header == NULL || tcp_header == NULL)
         {
             warning("failed to parse packet (%d)", GetLastError());
@@ -236,7 +236,7 @@ int __cdecl main(int argc, char **argv)
             }
         }
 
-        WinDivertHelperCalcChecksums(packet, packet_len, addr.Layer, &addr, 0);
+        WinDivertHelperCalcChecksums(packet, packet_len, &addr, 0);
         if (!WinDivertSend(handle, packet, packet_len, NULL, &addr))
         {
             warning("failed to send packet (%d)", GetLastError());

examples/webfilter/webfilter.c

@@ -1,6 +1,6 @@
 /*
  * webfilter.c
- * (C) 2023, all rights reserved,
+ * (C) 2019, all rights reserved,
  *
  * This file is part of WinDivert.
  *
@@ -204,9 +204,9 @@ int __cdecl main(int argc, char **argv)
             continue;
         }
 
-        WinDivertHelperParsePacket(packet, packet_len, addr.Layer, NULL, NULL,
-            &ip_header, NULL, NULL, NULL, NULL, &tcp_header, NULL, &payload,
-            &payload_len);
+        WinDivertHelperParsePacket(packet, packet_len, &ip_header, NULL,
+            NULL, NULL, NULL, &tcp_header, NULL, &payload, &payload_len,
+            NULL, NULL);
         if (ip_header == NULL || tcp_header == NULL || payload == NULL ||
             !BlackListPayloadMatch(blacklist, payload, (UINT16)payload_len))
         {
@@ -230,8 +230,7 @@ int __cdecl main(int argc, char **argv)
         reset->tcp.DstPort      = htons(80);
         reset->tcp.SeqNum       = tcp_header->SeqNum;
         reset->tcp.AckNum       = tcp_header->AckNum;
-        WinDivertHelperCalcChecksums((PVOID)reset, sizeof(PACKET),
-            addr.Layer, &addr, 0);
+        WinDivertHelperCalcChecksums((PVOID)reset, sizeof(PACKET), &addr, 0);
         if (!WinDivertSend(handle, (PVOID)reset, sizeof(PACKET), NULL, &addr))
         {
             fprintf(stderr, "warning: failed to send reset packet (%d)\n",
@@ -246,8 +245,7 @@ int __cdecl main(int argc, char **argv)
         blockpage->header.tcp.AckNum       =
             htonl(ntohl(tcp_header->SeqNum) + payload_len);
         addr.Outbound = !addr.Outbound;     // Reverse direction.
-        WinDivertHelperCalcChecksums((PVOID)blockpage, blockpage_len,
-            addr.Layer, &addr, 0);
+        WinDivertHelperCalcChecksums((PVOID)blockpage, blockpage_len, &addr, 0);
         if (!WinDivertSend(handle, (PVOID)blockpage, blockpage_len, NULL,
                 &addr))
         {
@@ -265,8 +263,7 @@ int __cdecl main(int argc, char **argv)
             htonl(ntohl(tcp_header->AckNum) + sizeof(block_data) - 1); 
         finish->tcp.AckNum       =
             htonl(ntohl(tcp_header->SeqNum) + payload_len);
-        WinDivertHelperCalcChecksums((PVOID)finish, sizeof(PACKET),
-            addr.Layer, &addr, 0);
+        WinDivertHelperCalcChecksums((PVOID)finish, sizeof(PACKET), &addr, 0);
         if (!WinDivertSend(handle, (PVOID)finish, sizeof(PACKET), NULL, &addr))
         {
             fprintf(stderr, "warning: failed to send finish packet (%d)\n",

examples/windivertctl/windivertctl.c

@@ -244,14 +244,11 @@ usage:
         SetConsoleTextAttribute(console, FOREGROUND_RED | FOREGROUND_GREEN);
         switch (addr.Reflect.Layer)
         {
-            case WINDIVERT_LAYER_ETHERNET:
-                fputs("ETHERNET", stdout);
-                break;
             case WINDIVERT_LAYER_NETWORK:
                 fputs("NETWORK", stdout);
                 break;
             case WINDIVERT_LAYER_NETWORK_FORWARD:
-                fputs("FORWARD", stdout);
+                fputs("NETWORK_FORWARD", stdout);
                 break;
             case WINDIVERT_LAYER_FLOW:
                 fputs("FLOW", stdout);

include/windivert.h

@@ -1,6 +1,6 @@
 /*
  * windivert.h
- * (C) 2023, all rights reserved,
+ * (C) 2019, all rights reserved,
  *
  * This file is part of WinDivert.
  *
@@ -79,18 +79,8 @@ typedef enum
     WINDIVERT_LAYER_FLOW = 2,           /* Flow layer. */
     WINDIVERT_LAYER_SOCKET = 3,         /* Socket layer. */
     WINDIVERT_LAYER_REFLECT = 4,        /* Reflect layer. */
-    WINDIVERT_LAYER_ETHERNET = 5,       /* Ethernet layer. */
 } WINDIVERT_LAYER, *PWINDIVERT_LAYER;
 
-/*
- * WinDivert ETHERNET layer data.
- */
-typedef struct
-{
-    UINT32 IfIdx;                       /* Packet's interface index. */
-    UINT32 SubIfIdx;                    /* Packet's sub-interface index. */
-} WINDIVERT_DATA_ETHERNET, *PWINDIVERT_DATA_ETHERNET;
-
 /*
  * WinDivert NETWORK and NETWORK_FORWARD layer data.
  */
@@ -163,12 +153,9 @@ typedef struct
     UINT32 TCPChecksum:1;               /* Packet has valid TCP checksum? */
     UINT32 UDPChecksum:1;               /* Packet has valid UDP checksum? */
     UINT32 Reserved1:8;
-    UINT32 Reserved2:12;
-    UINT32 Length:20;                   /* Packet length. */
+    UINT32 Reserved2;
     union
     {
-        WINDIVERT_DATA_ETHERNET Ethernet;
-                                        /* Ethernet layer data. */
         WINDIVERT_DATA_NETWORK Network; /* Network layer data. */
         WINDIVERT_DATA_FLOW Flow;       /* Flow layer data. */
         WINDIVERT_DATA_SOCKET Socket;   /* Socket layer data. */
@@ -196,7 +183,6 @@ typedef enum
     WINDIVERT_EVENT_SOCKET_CLOSE = 7,   /* Socket close. */
     WINDIVERT_EVENT_REFLECT_OPEN = 8,   /* WinDivert handle opened. */
     WINDIVERT_EVENT_REFLECT_CLOSE = 9,  /* WinDivert handle closed. */
-    WINDIVERT_EVENT_ETHERNET_FRAME = 10,/* Ethernet frame. */
 } WINDIVERT_EVENT, *PWINDIVERT_EVENT;
 
 /*
@@ -350,71 +336,9 @@ WINDIVERTEXPORT BOOL WinDivertGetParam(
 #endif
 
 /*
- * Ethernet/ARP/IPv4/IPv6/ICMP/ICMPv6/TCP/UDP header definitions.
+ * IPv4/IPv6/ICMP/ICMPv6/TCP/UDP header definitions.
  */
 typedef struct
-{
-    UINT8 DstAddr[6];
-    UINT8 SrcAddr[6];
-    UINT16 Type;
-} WINDIVERT_ETHHDR, *PWINDIVERT_ETHHDR;
-
-typedef struct
-{
-    UINT16 Hardware;
-    UINT16 Protocol;
-    UINT8 HardLength;
-    UINT8 ProtLength;
-    UINT16 Opcode;
-} WINDIVERT_ARPHDR, *PWINDIVERT_ARPHDR;
-
-#define WINDIVERT_ARPHDR_VALIDATE(hdr, len)                 \
-    ((hdr) != NULL &&                                       \
-     (len) >= sizeof(WINDIVERT_ARPHDR) &&                   \
-     (len) >= sizeof(WINDIVERT_ARPHDR) +                    \
-        2 * (hdr)->HardLength + 2 * (hdr)->ProtLength  &&   \
-     (hdr)->Hardware == 0x0100 &&                           \
-     (hdr)->HardLength == 6 &&                              \
-     (((hdr)->Protocol == 0x0008 &&                         \
-       (hdr)->ProtLength == 4) ||                           \
-      ((hdr)->Protocol == 0xDD86 &&                         \
-       (hdr)->ProtLength == 16)))
-
-#define WINDIVERT_ARPHDR_GET_SRCHARDADDR_OFFSET(hdr)        \
-    (sizeof(WINDIVERT_ARPHDR))
-#define WINDIVERT_ARPHDR_GET_SRCPROTADDR_OFFSET(hdr)        \
-    (sizeof(WINDIVERT_ARPHDR)+(hdr)->HardLength)
-#define WINDIVERT_ARPHDR_GET_DSTHARDADDR_OFFSET(hdr)        \
-    (sizeof(WINDIVERT_ARPHDR)+(hdr)->HardLength+(hdr)->ProtLength)
-#define WINDIVERT_ARPHDR_GET_DSTPROTADDR_OFFSET(hdr)        \
-    (sizeof(WINDIVERT_ARPHDR)+2*(hdr)->HardLength+(hdr)->ProtLength)
-
-#define WINDIVERT_ARPHDR_GET_SRCMACADDR_PTR(hdr, len)       \
-    (!WINDIVERT_ARPHDR_VALIDATE(hdr, len) ||                \
-        (hdr)->Hardware != 0x0100? NULL:                    \
-    (((UINT8 *)(hdr))+WINDIVERT_ARPHDR_GET_SRCHARDADDR_OFFSET(hdr)))
-#define WINDIVERT_ARPHDR_GET_SRCIPV4ADDR_PTR(hdr, len)      \
-    (!WINDIVERT_ARPHDR_VALIDATE(hdr, len) ||                \
-        (hdr)->Protocol != 0x0008? NULL:                    \
-    ((UINT32 *)(((UINT8 *)(hdr))+WINDIVERT_ARPHDR_GET_SRCPROTADDR_OFFSET(hdr))))
-#define WINDIVERT_ARPHDR_GET_SRCIPV6ADDR_PTR(hdr, len)      \
-    (!WINDIVERT_ARPHDR_VALIDATE(hdr, len) ||                \
-        (hdr)->Protocol != 0xDD86? NULL:                    \
-    ((UINT32 *)(((UINT8 *)(hdr))+WINDIVERT_ARPHDR_GET_SRCPROTADDR_OFFSET(hdr))))
-#define WINDIVERT_ARPHDR_GET_DSTMACADDR_PTR(hdr, len)       \
-    (!WINDIVERT_ARPHDR_VALIDATE(hdr, len) ||                \
-        (hdr)->Hardware != 0x0100? NULL:                    \
-    (((UINT8 *)(hdr))+WINDIVERT_ARPHDR_GET_DSTHARDADDR_OFFSET(hdr)))
-#define WINDIVERT_ARPHDR_GET_DSTIPV4ADDR_PTR(hdr, len)      \
-    (!WINDIVERT_ARPHDR_VALIDATE(hdr, len) ||                \
-        (hdr)->Protocol != 0x0008? NULL:                    \
-    ((UINT32 *)(((UINT8 *)(hdr))+WINDIVERT_ARPHDR_GET_DSTPROTADDR_OFFSET(hdr))))
-#define WINDIVERT_ARPHDR_GET_DSTIPV6ADDR_PTR(hdr, len)      \
-    (!WINDIVERT_ARPHDR_VALIDATE(hdr, len) ||                \
-        (hdr)->Protocol != 0xDD86? NULL:                    \
-    ((UINT32 *)(((UINT8 *)(hdr))+WINDIVERT_ARPHDR_GET_DSTPROTADDR_OFFSET(hdr))))
-
-typedef struct
 {
     UINT8  HdrLength:4;
     UINT8  Version:4;
@@ -566,7 +490,6 @@ typedef struct
 WINDIVERTEXPORT UINT64 WinDivertHelperHashPacket(
     __in        const VOID *pPacket,
     __in        UINT packetLen,
-    __in        WINDIVERT_LAYER layer,
     __in        UINT64 seed
 #ifdef __cplusplus
                 = 0
@@ -579,9 +502,6 @@ WINDIVERTEXPORT UINT64 WinDivertHelperHashPacket(
 WINDIVERTEXPORT BOOL WinDivertHelperParsePacket(
     __in        const VOID *pPacket,
     __in        UINT packetLen,
-    __in        WINDIVERT_LAYER layer,
-    __out_opt   PWINDIVERT_ETHHDR *ppEthHdr,
-    __out_opt   PWINDIVERT_ARPHDR *ppArpHdr,
     __out_opt   PWINDIVERT_IPHDR *ppIpHdr,
     __out_opt   PWINDIVERT_IPV6HDR *ppIpv6Hdr,
     __out_opt   UINT8 *pProtocol,
@@ -590,14 +510,9 @@ WINDIVERTEXPORT BOOL WinDivertHelperParsePacket(
     __out_opt   PWINDIVERT_TCPHDR *ppTcpHdr,
     __out_opt   PWINDIVERT_UDPHDR *ppUdpHdr,
     __out_opt   PVOID *ppData,
-    __out_opt   UINT *pDataLen);
-
-/*
- * Parse a MAC address.
- */
-WINDIVERTEXPORT BOOL WinDivertHelperParseMACAddress(
-    __in        const char *addrStr,
-    __out_opt   UINT8 *pAddr);
+    __out_opt   UINT *pDataLen,
+    __out_opt   PVOID *ppNext,
+    __out_opt   UINT *pNextLen);
 
 /*
  * Parse an IPv4 address.
@@ -613,14 +528,6 @@ WINDIVERTEXPORT BOOL WinDivertHelperParseIPv6Address(
     __in        const char *addrStr,
     __out_opt   UINT32 *pAddr);
 
-/*
- * Format a MAC address.
- */
-WINDIVERTEXPORT BOOL WinDivertHelperFormatMACAddress(
-    __in        const UINT8 *pAddr,
-    __out       char *buffer,
-    __in        UINT bufLen);
-
 /*
  * Format an IPv4 address.
  */
@@ -643,7 +550,6 @@ WINDIVERTEXPORT BOOL WinDivertHelperFormatIPv6Address(
 WINDIVERTEXPORT BOOL WinDivertHelperCalcChecksums(
     __inout     VOID *pPacket, 
     __in        UINT packetLen,
-    __in        WINDIVERT_LAYER layer,
     __out_opt   WINDIVERT_ADDRESS *pAddr,
     __in        UINT64 flags);
 
@@ -652,8 +558,7 @@ WINDIVERTEXPORT BOOL WinDivertHelperCalcChecksums(
  */
 WINDIVERTEXPORT BOOL WinDivertHelperDecrementTTL(
     __inout     VOID *pPacket,
-    __in        UINT packetLen,
-    __in        WINDIVERT_LAYER layer);
+    __in        UINT packetLen);
 
 /*
  * Compile the given filter string.
@@ -673,7 +578,6 @@ WINDIVERTEXPORT BOOL WinDivertHelperEvalFilter(
     __in        const char *filter,
     __in        const VOID *pPacket,
     __in        UINT packetLen,
-    __in        WINDIVERT_LAYER layer,
     __in        const WINDIVERT_ADDRESS *pAddr);
 
 /*
@@ -700,12 +604,6 @@ WINDIVERTEXPORT UINT64 WinDivertHelperNtohll(
     __in        UINT64 x);
 WINDIVERTEXPORT UINT64 WinDivertHelperHtonll(
     __in        UINT64 x);
-WINDIVERTEXPORT void WinDivertHelperNtohMACAddress(
-    __in        const UINT8 *inAddr,
-    __out       UINT8 *outAddr);
-WINDIVERTEXPORT void WinDivertHelperHtonMACAddress(
-    __in        const UINT8 *inAddr,
-    __out       UINT8 *outAddr);
 WINDIVERTEXPORT void WinDivertHelperNtohIPv6Address(
     __in        const UINT *inAddr,
     __out       UINT *outAddr);

include/windivert_device.h

@@ -1,6 +1,6 @@
 /*
  * windivert_device.h
- * (C) 2023, all rights reserved,
+ * (C) 2019, all rights reserved,
  *
  * This file is part of WinDivert.
  *
@@ -44,8 +44,8 @@
 #define WINDIVERT_KERNEL
 #include "windivert.h"
 
-#define WINDIVERT_VERSION_MAJOR                     3
-#define WINDIVERT_VERSION_MINOR                     0
+#define WINDIVERT_VERSION_MAJOR                     2
+#define WINDIVERT_VERSION_MINOR                     2
 
 #define WINDIVERT_MAGIC_DLL                         0x4C4C447669645724ull
 #define WINDIVERT_MAGIC_SYS                         0x5359537669645723ull
@@ -150,21 +150,8 @@
 #define WINDIVERT_FILTER_FIELD_RANDOM16             83
 #define WINDIVERT_FILTER_FIELD_RANDOM32             84
 #define WINDIVERT_FILTER_FIELD_FRAGMENT             85
-#define WINDIVERT_FILTER_FIELD_ETH_DST_ADDR         86
-#define WINDIVERT_FILTER_FIELD_ETH_SRC_ADDR         87
-#define WINDIVERT_FILTER_FIELD_ETH_TYPE             88
-#define WINDIVERT_FILTER_FIELD_ARP                  89
-#define WINDIVERT_FILTER_FIELD_ARP_HARDWARE         90
-#define WINDIVERT_FILTER_FIELD_ARP_PROTOCOL         91
-#define WINDIVERT_FILTER_FIELD_ARP_HARD_LENGTH      92
-#define WINDIVERT_FILTER_FIELD_ARP_PROT_LENGTH      93
-#define WINDIVERT_FILTER_FIELD_ARP_OPCODE           94
-#define WINDIVERT_FILTER_FIELD_ARP_SRC_HARD_ADDR    95
-#define WINDIVERT_FILTER_FIELD_ARP_SRC_PROT_ADDR    96
-#define WINDIVERT_FILTER_FIELD_ARP_DST_HARD_ADDR    97
-#define WINDIVERT_FILTER_FIELD_ARP_DST_PROT_ADDR    98
 #define WINDIVERT_FILTER_FIELD_MAX                  \
-    WINDIVERT_FILTER_FIELD_ARP_DST_PROT_ADDR
+    WINDIVERT_FILTER_FIELD_FRAGMENT
 
 #define WINDIVERT_FILTER_TEST_EQ                    0
 #define WINDIVERT_FILTER_TEST_NEQ                   1

inf/windivert32.inf

@@ -4,7 +4,7 @@ Class = WFPCALLOUTS
 ClassGuid = {57465043-616C-6C6F-7574-5F636C617373}
 Provider = %Basil%
 CatalogFile = WinDivert32.Cat
-DriverVer = 01/09/2022,2.2.2
+DriverVer = 08/08/2019,2.2.0
 
 [SourceDisksNames]
 1 = %DiskName%

inf/windivert64.inf

@@ -4,7 +4,7 @@ Class = WFPCALLOUTS
 ClassGuid = {57465043-616C-6C6F-7574-5F636C617373}
 Provider = %Basil%
 CatalogFile = WinDivert64.Cat
-DriverVer = 01/09/2022,2.2.2
+DriverVer = 08/08/2019,2.2.0
 
 [SourceDisksNames]
 1 = %DiskName%

sys/windivert.rc

@@ -1,6 +1,6 @@
 /*
  * windivert.rc
- * (C) 2022, all rights reserved,
+ * (C) 2019, all rights reserved,
  *
  * This file is part of WinDivert.
  *
@@ -48,7 +48,7 @@
 #define VER_PRODUCTVERSION          2.2
 #define VER_PRODUCTVERSION_STR      "2.2"
 #define VER_COMPANYNAME_STR         "Basil"
-#define VER_LEGALCOPYRIGHT_YEARS    "2011-2022"
+#define VER_LEGALCOPYRIGHT_YEARS    "2011-2019"
 #define VER_LEGALCOPYRIGHT_STR      \
     "Copyright \251 " VER_COMPANYNAME_STR " " VER_LEGALCOPYRIGHT_YEARS 
 #define VER_FILEVERSION             VER_PRODUCTVERSION

sys/windivert.vcxproj

@@ -69,7 +69,7 @@
  </PropertyGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props"/>
  <PropertyGroup Label="Configuration">
-  <TargetVersion>Windows8</TargetVersion>
+  <TargetVersion>Windows7</TargetVersion>
   <UseDebugLibraries>true</UseDebugLibraries>
   <PlatformToolset>WindowsKernelModeDriver10.0</PlatformToolset>
   <ConfigurationType>Driver</ConfigurationType>

test/test.c

@@ -1276,10 +1276,10 @@ static BOOL run_test(HANDLE inject_handle, const char *filter,
     // non-matching random values have been lost:
     if ((!random &&
             WinDivertHelperEvalFilter(filter, buf[idx], buf_len[idx],
-                WINDIVERT_LAYER_NETWORK, &addr[idx]) != result) ||
+                &addr[idx]) != result) ||
         (random && result && 
             !WinDivertHelperEvalFilter(filter, buf[idx], buf_len[idx],
-                WINDIVERT_LAYER_NETWORK, &addr[idx])))
+                &addr[idx])))
     {
         fprintf(stderr, "error: filter \"%s\" does not match the given "
             "packet\n", filter);
@@ -1417,8 +1417,7 @@ static DWORD monitor_worker(LPVOID arg)
         addr.Outbound = TRUE;
         addr.IPv6     = (iphdr->Version == 4? FALSE: TRUE);
         if (WinDivertHelperEvalFilter(object_1, tests[i].packet->packet,
-                tests[i].packet->packet_len, WINDIVERT_LAYER_NETWORK, &addr)
-                    != tests[i].match)
+                tests[i].packet->packet_len, &addr) != tests[i].match)
         {
             fprintf(stderr, "error: failed to match recompiled filter "
                 "(test = %.3u, filter = \"%s\" formatted = \"%s\", "