[PATCH] tap: Send frames after the first one in tap_send_frames_pasta()

[Stefano Brivio <sbrivio@redhat.com>]

...instead of repeatedly sending out the first one in iov.

Fixes: e21ee41ac35a ("tcp: Combine two parts of pasta tap send path together")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
I just applied this, to unblock a series by David which was pending
for way too long. The commit reference in Fixes: refers to a commit
from said series which I'm pushing out together with this patch.

Posting anyway for reviews.

 tap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tap.c b/tap.c
index af9bc15..716d887 100644
--- a/tap.c
+++ b/tap.c
@@ -316,12 +316,13 @@ static void tap_send_frames_pasta(struct ctx *c,
 {
 	size_t i;
 
-	for (i = 0; i < n; i++) {
+	for (i = 0; i < n; i++, iov++) {
 		if (write(c->fd_tap, (char *)iov->iov_base, iov->iov_len) < 0) {
 			debug("tap write: %s", strerror(errno));
 			if (errno != EAGAIN && errno != EWOULDBLOCK)
 				tap_handler(c, c->fd_tap, EPOLLERR, NULL);
 			i--;
+			iov--;
 		}
 	}
 }
-- 
@@ -316,12 +316,13 @@ static void tap_send_frames_pasta(struct ctx *c,
 {
 	size_t i;
 
-	for (i = 0; i < n; i++) {
+	for (i = 0; i < n; i++, iov++) {
 		if (write(c->fd_tap, (char *)iov->iov_base, iov->iov_len) < 0) {
 			debug("tap write: %s", strerror(errno));
 			if (errno != EAGAIN && errno != EWOULDBLOCK)
 				tap_handler(c, c->fd_tap, EPOLLERR, NULL);
 			i--;
+			iov--;
 		}
 	}
 }
-- 
2.35.1