send() might fail and return a negative len, catch that to avoid
advancing the send buffer in the wrong direction and causing all sorts
of problems.
977|-> len = send(sk, buf + sent, buflen, 0);
978|
979| sent += len;
---
tools/l2test.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/l2test.c b/tools/l2test.c
index 011a68c3781e..7b6c36e165da 100644
--- a/tools/l2test.c
+++ b/tools/l2test.c
@@ -975,6 +975,11 @@ static void do_send(int sk)
buflen = (size > omtu) ? omtu : size;
len = send(sk, buf + sent, buflen, 0);
+ if (len < 0) {
+ syslog(LOG_ERR, "Send failed: %s (%d)",
+ strerror(errno), errno);
+ exit(1);
+ }
sent += len;
size -= len;
--
2.45.1
