zhhyu7 opened a new pull request, #17735:
URL: https://github.com/apache/nuttx/pull/17735
## Summary
fix the issue where acquiring the lock gets stuck due to the sconn lock not
being initialized.
provides support for s|getsockopt(IPPROTO_IP|IPPROTO_IPV6) through the
SOCK_CTRL socket.
## Impact
*Update this section, where applicable, on how change affects users,
build process, hardware, documentation, security, compatibility, etc.*
## Testing
sim:matter with test code:
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int main(void) {
int sock_fd;
int ret;
int tos_value_to_set;
int tos_value_read;
socklen_t optlen;
// 1. Create a CTRL socket (SOCK_CTRL)
sock_fd = socket(AF_INET, SOCK_CTRL, 0);
if (sock_fd < 0) {
perror("socket() failed");
return EXIT_FAILURE;
}
printf("CTRL socket created successfully. FD: %d\n", sock_fd);
// 2. Define the IP_TOS value we want to set
// IP_TOS is a byte (0-255). Common values:
// Low Delay (0x10): 16 decimal - for interactive traffic
// High Throughput (0x08): 8 decimal - for bulk data
// High Reliability (0x04): 4 decimal
// We'll set it to "Low Delay" (0x10 = 16 decimal)
tos_value_to_set = 0x10; // Low Delay
printf("Attempting to set IP_TOS to: 0x%02x (%d decimal)\n",
tos_value_to_set, tos_value_to_set);
// 3. Set the IP_TOS socket option using setsockopt()
ret = setsockopt(sock_fd, // socket file descriptor
IPPROTO_IP, // level: IP protocol level
IP_TOS, // option name: Type of Service
&tos_value_to_set, // pointer to the option value
sizeof(tos_value_to_set)); // size of the option value
if (ret < 0) {
perror("setsockopt(IP_TOS) failed");
close(sock_fd);
return EXIT_FAILURE;
}
printf("Successfully set IP_TOS option.\n");
// 4. Prepare to read back the IP_TOS value
tos_value_read = 0;
optlen = sizeof(tos_value_read);
// 5. Read the IP_TOS socket option using getsockopt()
ret = getsockopt(sock_fd, // socket file descriptor
IPPROTO_IP, // level: IP protocol level
IP_TOS, // option name: Type of Service
&tos_value_read, // buffer to store the retrieved value
&optlen); // size of the buffer (in/out parameter)
if (ret < 0) {
perror("getsockopt(IP_TOS) failed");
close(sock_fd);
return EXIT_FAILURE;
}
// Note: The kernel may modify/round the TOS value you set.
// It typically only uses the 6 most significant bits (DSCP field).
printf("Successfully read back IP_TOS option.\n");
printf("Read value: 0x%02x (%d decimal)\n",
tos_value_read, tos_value_read);
// 6. Clean up: close the socket
close(sock_fd);
printf("\nSocket closed. Program finished.\n");
return EXIT_SUCCESS;
}
```
NuttX log:
```
Starting program: /home/zhhyu/source/upstream/nuttx/nuttx
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
NuttShell (NSH) NuttX-12.12.0-RC0
MOTD: username=admin password=Administrator
nsh> hello
CTRL socket created successfully. FD: 3
Attempting to set IP_TOS to: 0x10 (16 decimal)
Successfully set IP_TOS option.
Successfully read back IP_TOS option.
Read value: 0x10 (16 decimal)
Socket closed. Program finished.
nsh>
```
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