diff options
author | David Ahern <dsahern@gmail.com> | 2021-01-14 06:09:40 +0300 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2021-01-15 03:26:48 +0300 |
commit | 092e0ceb12f28450c8db095b5f417fde923abc07 (patch) | |
tree | fd1f4c5a54f546e255c943af14296a5543dd4ea2 /tools/testing/selftests/net/nettest.c | |
parent | f2f575840a598ba9a6685cdafac498be4f118757 (diff) | |
download | linux-092e0ceb12f28450c8db095b5f417fde923abc07.tar.xz |
selftests: Add options to set network namespace to nettest
Add options to specify server and client network namespace to
use before running respective functions.
Signed-off-by: Seth David Schoen <schoen@loyalty.org>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/testing/selftests/net/nettest.c')
-rw-r--r-- | tools/testing/selftests/net/nettest.c | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/tools/testing/selftests/net/nettest.c b/tools/testing/selftests/net/nettest.c index 3b083fad3577..cc9635b6461f 100644 --- a/tools/testing/selftests/net/nettest.c +++ b/tools/testing/selftests/net/nettest.c @@ -9,6 +9,7 @@ #include <sys/types.h> #include <sys/ioctl.h> #include <sys/socket.h> +#include <sys/wait.h> #include <linux/tcp.h> #include <arpa/inet.h> #include <net/if.h> @@ -17,6 +18,7 @@ #include <fcntl.h> #include <libgen.h> #include <limits.h> +#include <sched.h> #include <stdarg.h> #include <stdio.h> #include <stdlib.h> @@ -34,6 +36,8 @@ #define DEFAULT_PORT 12345 +#define NS_PREFIX "/run/netns/" + #ifndef MAX #define MAX(a, b) ((a) > (b) ? (a) : (b)) #endif @@ -77,6 +81,9 @@ struct sock_args { const char *dev; int ifindex; + const char *clientns; + const char *serverns; + const char *password; /* prefix for MD5 password */ const char *md5_prefix_str; @@ -213,6 +220,27 @@ static void log_address(const char *desc, struct sockaddr *sa) fflush(stdout); } +static int switch_ns(const char *ns) +{ + char path[PATH_MAX]; + int fd, ret; + + if (geteuid()) + log_error("warning: likely need root to set netns %s!\n", ns); + + snprintf(path, sizeof(path), "%s%s", NS_PREFIX, ns); + fd = open(path, 0); + if (fd < 0) { + log_err_errno("Failed to open netns path; can not switch netns"); + return 1; + } + + ret = setns(fd, CLONE_NEWNET); + close(fd); + + return ret; +} + static int tcp_md5sig(int sd, void *addr, socklen_t alen, struct sock_args *args) { int keylen = strlen(args->password); @@ -1377,6 +1405,15 @@ static int do_server(struct sock_args *args) fd_set rfds; int rc; + if (args->serverns) { + if (switch_ns(args->serverns)) { + log_error("Could not set server netns to %s\n", + args->serverns); + return 1; + } + log_msg("Switched server netns\n"); + } + if (resolve_devices(args) || validate_addresses(args)) return 1; @@ -1565,6 +1602,15 @@ static int do_client(struct sock_args *args) return 1; } + if (args->clientns) { + if (switch_ns(args->clientns)) { + log_error("Could not set client netns to %s\n", + args->clientns); + return 1; + } + log_msg("Switched client netns\n"); + } + if (resolve_devices(args) || validate_addresses(args)) return 1; @@ -1642,7 +1688,7 @@ static char *random_msg(int len) return m; } -#define GETOPT_STR "sr:l:p:t:g:P:DRn:M:m:d:SCi6L:0:1:2:Fbq" +#define GETOPT_STR "sr:l:p:t:g:P:DRn:M:m:d:N:O:SCi6L:0:1:2:Fbq" static void print_usage(char *prog) { @@ -1656,6 +1702,8 @@ static void print_usage(char *prog) " -t timeout seconds (default: none)\n" "\n" "Optional:\n" + " -N ns set client to network namespace ns (requires root)\n" + " -O ns set server to network namespace ns (requires root)\n" " -F Restart server loop\n" " -6 IPv6 (default is IPv4)\n" " -P proto protocol for socket: icmp, ospf (default: none)\n" @@ -1757,6 +1805,12 @@ int main(int argc, char *argv[]) case 'n': iter = atoi(optarg); break; + case 'N': + args.clientns = optarg; + break; + case 'O': + args.serverns = optarg; + break; case 'L': msg = random_msg(atoi(optarg)); break; |