As we already did for flow types, use an "EPOLL_NUM_TYPES" isntead of
EPOLL_TYPE_MAX, which is a little bit safer and clearer. Add a static
assert on the size of the matching names array.
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
passt.c | 4 +++-
passt.h | 4 ++--
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/passt.c b/passt.c
index 870064f..a37a2f4 100644
--- a/passt.c
+++ b/passt.c
@@ -59,7 +59,7 @@
char pkt_buf[PKT_BUF_BYTES] __attribute__ ((aligned(PAGE_SIZE)));
-char *epoll_type_str[EPOLL_TYPE_MAX + 1] = {
+char *epoll_type_str[] = {
[EPOLL_TYPE_TCP] = "connected TCP socket",
[EPOLL_TYPE_TCP_LISTEN] = "listening TCP socket",
[EPOLL_TYPE_TCP_TIMER] = "TCP timer",
@@ -71,6 +71,8 @@ char *epoll_type_str[EPOLL_TYPE_MAX + 1] = {
[EPOLL_TYPE_TAP_PASST] = "connected qemu socket",
[EPOLL_TYPE_TAP_LISTEN] = "listening qemu socket",
};
+static_assert(ARRAY_SIZE(epoll_type_str) == EPOLL_NUM_TYPES,
+ "epoll_type_str[] doesn't match enum epoll_type");
/**
* post_handler() - Run periodic and deferred tasks for L4 protocol handlers
diff --git a/passt.h b/passt.h
index 20528d5..188ad2c 100644
--- a/passt.h
+++ b/passt.h
@@ -70,7 +70,7 @@ enum epoll_type {
/* socket listening for qemu socket connections */
EPOLL_TYPE_TAP_LISTEN,
- EPOLL_TYPE_MAX = EPOLL_TYPE_TAP_LISTEN,
+ EPOLL_NUM_TYPES,
};
/**
@@ -115,7 +115,7 @@ extern char pkt_buf [PKT_BUF_BYTES];
extern char *epoll_type_str[];
#define EPOLL_TYPE_STR(n) \
- (((uint8_t)(n) <= EPOLL_TYPE_MAX && epoll_type_str[(n)]) ? \
+ (((uint8_t)(n) < EPOLL_NUM_TYPES && epoll_type_str[(n)]) ? \
epoll_type_str[(n)] : "?")
#include <resolv.h> /* For MAXNS below */
--
2.43.0