From 7564b58a7f27bd926b0ce76b4fda145dca2d15dd Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Thu, 16 Feb 2023 01:36:17 +0100 Subject: tap: Use single counter for iov elements in tap_send_frames_pasta() David points out that using multiple counters to go over the iov array, namely 'i' and 'iov', makes mistakes easier. We can't just use 'iov', unless we reserve an element with zero iov_len at the end, which isn't really justified. Simply use 'i' to iterate over the array. Link: https://archives.passt.top/passt-dev/Y+mfenvLn3VJ7Dg5@yekko/ Signed-off-by: Stefano Brivio Reviewed-by: David Gibson --- tap.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tap.c b/tap.c index 02da84d..e4c5b5b 100644 --- a/tap.c +++ b/tap.c @@ -316,13 +316,13 @@ static void tap_send_frames_pasta(struct ctx *c, { size_t i; - for (i = 0; i < n; i++, iov++) { - if (write(c->fd_tap, (char *)iov->iov_base, iov->iov_len) < 0) { + for (i = 0; i < n; i++) { + if (write(c->fd_tap, (char *)iov[i].iov_base, + iov[i].iov_len) < 0) { debug("tap write: %s", strerror(errno)); if (errno != EAGAIN && errno != EWOULDBLOCK) tap_handler(c, c->fd_tap, EPOLLERR, NULL); i--; - iov--; } } } -- cgit v1.2.3