From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 7 Mar 2023 20:50:12 +0000 (+0100)
Subject: map: fix return code check for bpf_map_get_next_key calls
X-Git-Url: http://git.openwrt.org/?a=commitdiff_plain;h=9a47ea4b683dd845ec94534fcd82d3117c9ab313;p=project%2Fqosify.git

map: fix return code check for bpf_map_get_next_key calls

It can now apparently return -2 instead of -1.
Fixes an infinite loop on startup

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/map.c b/map.c
index 4b38155..4785cc5 100644
--- a/map.c
+++ b/map.c
@@ -142,7 +142,7 @@ static void qosify_map_clear_list(enum qosify_map_id id)
 	int fd = qosify_map_fds[id];
 	__u32 key[4] = {};
 
-	while (bpf_map_get_next_key(fd, &key, &key) != -1)
+	while (bpf_map_get_next_key(fd, &key, &key) == 0)
 		bpf_map_delete_elem(fd, &key);
 }