From 2dbed699e78ed3393ac97a64b04581974070afed Mon Sep 17 00:00:00 2001
From: Stefano Brivio <sbrivio@redhat.com>
Date: Sun, 26 Sep 2021 23:19:40 +0200
Subject: passt: Align pkt_buf to PAGE_SIZE (start and size), try to fit in
 huge pages

If transparent huge pages are available, madvise() will do the trick.

While at it, decrease EPOLL_EVENTS for the main loop from 10 to 8,
for slightly better socket fairness.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
 util.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'util.h')

diff --git a/util.h b/util.h
index 2e7699c..6402f41 100644
--- a/util.h
+++ b/util.h
@@ -25,6 +25,7 @@ void debug(const char *format, ...);
 #endif
 
 #define DIV_ROUND_UP(n, d)	(((n) + (d) - 1) / (d))
+#define ROUND_DOWN(x, y)	((x) & ~((y) - 1))
 
 #define SWAP(a, b)							\
 	do {								\
-- 
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