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selftests/bpf: Add socket_kind_to_str() to socket_helpers

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Add function that returns string representation of socket's domain/type.

Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/r/20250515-selftests-sockmap-redir-v3-2-a1ea723f7e7e@rbox.co
This commit is contained in:
Michal Luczaj
2025-05-15 00:15:25 +02:00
committed by Martin KaFai Lau
parent fb1131d5e1
commit d87857946d
1 changed files with 55 additions and 0 deletions
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55
tools/testing/selftests/bpf/prog_tests/socket_helpers.h
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@@ -410,4 +410,59 @@ static inline int create_socket_pairs(int family, int sotype, int *c0, int *c1,
return err;
}
static inline const char *socket_kind_to_str(int sock_fd)
{
socklen_t opt_len;
int domain, type;
opt_len = sizeof(domain);
if (getsockopt(sock_fd, SOL_SOCKET, SO_DOMAIN, &domain, &opt_len))
FAIL_ERRNO("getsockopt(SO_DOMAIN)");
opt_len = sizeof(type);
if (getsockopt(sock_fd, SOL_SOCKET, SO_TYPE, &type, &opt_len))
FAIL_ERRNO("getsockopt(SO_TYPE)");
switch (domain) {
case AF_INET:
switch (type) {
case SOCK_STREAM:
return "tcp4";
case SOCK_DGRAM:
return "udp4";
}
break;
case AF_INET6:
switch (type) {
case SOCK_STREAM:
return "tcp6";
case SOCK_DGRAM:
return "udp6";
}
break;
case AF_UNIX:
switch (type) {
case SOCK_STREAM:
return "u_str";
case SOCK_DGRAM:
return "u_dgr";
case SOCK_SEQPACKET:
return "u_seq";
}
break;
case AF_VSOCK:
switch (type) {
case SOCK_STREAM:
return "v_str";
case SOCK_DGRAM:
return "v_dgr";
case SOCK_SEQPACKET:
return "v_seq";
}
break;
}
return "???";
}
#endif // __SOCKET_HELPERS__