[bpf-next PATCH v3 5/7] bpf: sockmap sample add base test without any BPF for comparison

[John Fastabend]

Add a base test that does not use BPF hooks to test baseline case.

Signed-off-by: John Fastabend <john.fastab...@gmail.com>
---
 samples/sockmap/sockmap_user.c |   26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/samples/sockmap/sockmap_user.c b/samples/sockmap/sockmap_user.c
index 442fc00..c3295a7 100644
--- a/samples/sockmap/sockmap_user.c
+++ b/samples/sockmap/sockmap_user.c
@@ -287,18 +287,24 @@ static int msg_loop(int fd, int iov_count, int 
iov_length, int cnt,
 
 static float giga = 1000000000;
 
-static int sendmsg_test(int iov_count, int iov_buf, int cnt, int verbose)
+static int sendmsg_test(int iov_count, int iov_buf, int cnt,
+                       int verbose, bool base)
 {
-       int txpid, rxpid, err = 0;
+       float sent_Bps = 0, recvd_Bps = 0;
+       int rx_fd, txpid, rxpid, err = 0;
        struct msg_stats s = {0};
        int status;
-       float sent_Bps = 0, recvd_Bps = 0;
 
        errno = 0;
 
+       if (base)
+               rx_fd = p1;
+       else
+               rx_fd = p2;
+
        rxpid = fork();
        if (rxpid == 0) {
-               err = msg_loop(p2, iov_count, iov_buf, cnt, &s, false);
+               err = msg_loop(rx_fd, iov_count, iov_buf, cnt, &s, false);
                if (err)
                        fprintf(stderr,
                                "msg_loop_rx: iov_count %i iov_buf %i cnt %i 
err %i\n",
@@ -427,6 +433,7 @@ static int forever_ping_pong(int rate, int verbose)
 enum {
        PING_PONG,
        SENDMSG,
+       BASE,
 };
 
 int main(int argc, char **argv)
@@ -466,6 +473,8 @@ int main(int argc, char **argv)
                                test = PING_PONG;
                        } else if (memcmp(optarg, "sendmsg", 7) == 0) {
                                test = SENDMSG;
+                       } else if (memcmp(optarg, "base", 4) == 0) {
+                               test = BASE;
                        } else {
                                usage(argv);
                                return -1;
@@ -491,6 +500,10 @@ int main(int argc, char **argv)
        /* catch SIGINT */
        signal(SIGINT, running_handler);
 
+       /* If base test skip BPF setup */
+       if (test == BASE)
+               goto run;
+
        if (load_bpf_file(filename)) {
                fprintf(stderr, "load_bpf_file: (%s) %s\n",
                        filename, strerror(errno));
@@ -522,6 +535,7 @@ int main(int argc, char **argv)
                return err;
        }
 
+run:
        err = sockmap_init_sockets();
        if (err) {
                fprintf(stderr, "ERROR: test socket failed: %d\n", err);
@@ -531,7 +545,9 @@ int main(int argc, char **argv)
        if (test == PING_PONG)
                err = forever_ping_pong(rate, verbose);
        else if (test == SENDMSG)
-               err = sendmsg_test(iov_count, length, rate, verbose);
+               err = sendmsg_test(iov_count, length, rate, verbose, false);
+       else if (test == BASE)
+               err = sendmsg_test(iov_count, length, rate, verbose, true);
        else
                fprintf(stderr, "unknown test\n");
 out: