Some tests can't be run in parallel because they use same namespace names or veth names.
Create an helper that appends the thread ID to a given string. 8 characters are used for it (7 digits + '\0')
Signed-off-by: Bastien Curutchet (eBPF Foundation) bastien.curutchet@bootlin.com --- tools/testing/selftests/bpf/network_helpers.c | 17 +++++++++++++++++ tools/testing/selftests/bpf/network_helpers.h | 12 ++++++++++++ 2 files changed, 29 insertions(+)
diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c index 80844a5fb1feef2ff73c2f0293e52495803ab769..a4252e000428415a7a1eb906d857038facd91735 100644 --- a/tools/testing/selftests/bpf/network_helpers.c +++ b/tools/testing/selftests/bpf/network_helpers.c @@ -446,6 +446,23 @@ char *ping_command(int family) return "ping"; }
+int append_tid(char *str, size_t sz) +{ + size_t end; + + if (!str) + return -1; + + end = strlen(str); + if (end + 8 > sz) + return -1; + + sprintf(&str[end], "%07d", gettid()); + str[end + 7] = '\0'; + + return 0; +} + int remove_netns(const char *name) { char *cmd; diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h index ebec8a8d6f81e9d079a3b087127a37885c656856..9f6e05d886c544aa2db4be164a4acdeddd394aee 100644 --- a/tools/testing/selftests/bpf/network_helpers.h +++ b/tools/testing/selftests/bpf/network_helpers.h @@ -98,6 +98,18 @@ int send_recv_data(int lfd, int fd, uint32_t total_bytes); int make_netns(const char *name); int remove_netns(const char *name);
+/** + * append_tid() - Append thread ID to the given string. + * + * @str: string to extend + * @sz: string's size + * + * 8 characters are used to append the thread ID (7 digits + '\0') + * + * Returns -1 on errors, 0 otherwise + */ +int append_tid(char *str, size_t sz); + static __u16 csum_fold(__u32 csum) { csum = (csum & 0xffff) + (csum >> 16);