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[simulation] add reliable virtual time transport (#11029)

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This commit adds a reliable transport based on SEQPACKET unix socket to
simulation platform and use this for tests on simulation platform.
This commit is contained in:
Yakun Xu
2025-06-04 23:32:25 -07:00
committed by GitHub
parent a1de12fd49
commit 1662ca8001
6 changed files with 346 additions and 204 deletions
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examples/platforms/simulation/virtual_time/platform-sim.c
+74 -23
View File
@@ -44,6 +44,7 @@
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/un.h>
#include <syslog.h>
#include <openthread/tasklet.h>
@@ -57,6 +58,8 @@ uint32_t gNodeId = 1;
extern bool gPlatformPseudoResetWasRequested;
static volatile bool gTerminate = false;
static bool sUseUnixSocket = false;
int gArgumentsCount = 0;
char **gArguments = NULL;
@@ -74,20 +77,28 @@ static void handleSignal(int aSignal)
void otSimSendEvent(const struct Event *aEvent)
{
ssize_t rval;
struct sockaddr_in sockaddr;
ssize_t rval;
memset(&sockaddr, 0, sizeof(sockaddr));
sockaddr.sin_family = AF_INET;
inet_pton(AF_INET, "127.0.0.1", &sockaddr.sin_addr);
sockaddr.sin_port = htons(sPortBase + sPortOffset);
if (sUseUnixSocket)
{
rval = send(sSockFd, aEvent, offsetof(struct Event, mData) + aEvent->mDataLength, 0);
}
else
{
struct sockaddr_in sockaddr;
rval = sendto(sSockFd, aEvent, offsetof(struct Event, mData) + aEvent->mDataLength, 0, (struct sockaddr *)&sockaddr,
sizeof(sockaddr));
memset(&sockaddr, 0, sizeof(sockaddr));
sockaddr.sin_family = AF_INET;
inet_pton(AF_INET, "127.0.0.1", &sockaddr.sin_addr);
sockaddr.sin_port = htons(sPortBase + sPortOffset);
rval = sendto(sSockFd, aEvent, offsetof(struct Event, mData) + aEvent->mDataLength, 0,
(struct sockaddr *)&sockaddr, sizeof(sockaddr));
}
if (rval < 0)
{
perror("sendto");
perror("Send simulation event");
DieNow(OT_EXIT_ERROR_ERRNO);
}
}
@@ -95,11 +106,12 @@ void otSimSendEvent(const struct Event *aEvent)
static void receiveEvent(otInstance *aInstance)
{
struct Event event;
ssize_t rval = recvfrom(sSockFd, (char *)&event, sizeof(event), 0, NULL, NULL);
ssize_t rval = sUseUnixSocket ? recv(sSockFd, (char *)&event, sizeof(event), 0)
: recvfrom(sSockFd, (char *)&event, sizeof(event), 0, NULL, NULL);
if (rval < 0 || (uint16_t)rval < offsetof(struct Event, mData))
{
perror("recvfrom");
perror("Receive simulation event");
DieNow(OT_EXIT_ERROR_ERRNO);
}
@@ -166,19 +178,18 @@ otError otPlatUartFlush(void) { return OT_ERROR_NONE; }
static void socket_init(void)
{
struct sockaddr_in sockaddr;
memset(&sockaddr, 0, sizeof(sockaddr));
sockaddr.sin_family = AF_INET;
{
char *env = getenv("OT_VT_USE_UNIX_SOCKET");
if (env != NULL && !strcmp(env, "1"))
{
sUseUnixSocket = true;
}
}
parseFromEnvAsUint16("PORT_BASE", &sPortBase);
parseFromEnvAsUint16("PORT_OFFSET", &sPortOffset);
sPortOffset *= (MAX_NETWORK_SIZE + 1);
sockaddr.sin_port = htons((uint16_t)(sPortBase + sPortOffset + gNodeId));
sockaddr.sin_addr.s_addr = INADDR_ANY;
sSockFd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
sSockFd = sUseUnixSocket ? socket(AF_UNIX, SOCK_SEQPACKET, 0) : socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (sSockFd == -1)
{
@@ -186,10 +197,50 @@ static void socket_init(void)
DieNow(OT_EXIT_ERROR_ERRNO);
}
if (bind(sSockFd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)) == -1)
if (sUseUnixSocket)
{
perror("bind");
DieNow(OT_EXIT_ERROR_ERRNO);
uint16_t port = sPortBase + sPortOffset + gNodeId;
struct sockaddr_un addr;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
sprintf(addr.sun_path, "vt.%u.sock", port);
if (unlink(addr.sun_path) == -1 && errno != ENOENT)
{
perror("unlink");
DieNow(OT_EXIT_ERROR_ERRNO);
}
if (bind(sSockFd, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
perror("bind");
DieNow(OT_EXIT_ERROR_ERRNO);
}
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
sprintf(addr.sun_path, "vt.%u.sock", sPortBase + sPortOffset);
if (connect(sSockFd, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
perror("connect");
DieNow(OT_EXIT_ERROR_ERRNO);
}
}
else
{
struct sockaddr_in sockaddr;
memset(&sockaddr, 0, sizeof(sockaddr));
sockaddr.sin_family = AF_INET;
sockaddr.sin_port = htons((uint16_t)(sPortBase + sPortOffset + gNodeId));
sockaddr.sin_addr.s_addr = INADDR_ANY;
if (bind(sSockFd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)) == -1)
{
perror("bind");
DieNow(OT_EXIT_ERROR_ERRNO);
}
}
}