[PATCH] tap: Capture only packets that are actually sent

[Laurent Vivier <lvivier@redhat.com>]

In tap_send_frames(), if we failed to send all the frames, we must
only log the frames that have been sent, not all the frames we wanted
to send.

Fixes: dda7945ca9c9 ("pcap: Handle short writes in pcap_frame()")
Cc: david@gibson.dropbear.id.au
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---

Notes:
    David, I don't understand why you changed the 'm' by an 'n' in your
    commit.

 tap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tap.c b/tap.c
index c7b9372668ec..f4051cecab84 100644
--- a/tap.c
+++ b/tap.c
@@ -413,7 +413,7 @@ size_t tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n)
 	if (m < n)
 		debug("tap: failed to send %zu frames of %zu", n - m, n);
 
-	pcap_multiple(iov, 1, n, c->mode == MODE_PASST ? sizeof(uint32_t) : 0);
+	pcap_multiple(iov, 1, m, c->mode == MODE_PASST ? sizeof(uint32_t) : 0);
 
 	return m;
 }
-- 
@@ -413,7 +413,7 @@ size_t tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n)
 	if (m < n)
 		debug("tap: failed to send %zu frames of %zu", n - m, n);
 
-	pcap_multiple(iov, 1, n, c->mode == MODE_PASST ? sizeof(uint32_t) : 0);
+	pcap_multiple(iov, 1, m, c->mode == MODE_PASST ? sizeof(uint32_t) : 0);
 
 	return m;
 }
-- 
2.42.0