* [PATCH] batctl: fix endianness when reading radiotap header
@ 2020-04-29 10:09 Marek Lindner
0 siblings, 0 replies; only message in thread
From: Marek Lindner @ 2020-04-29 10:09 UTC (permalink / raw)
To: b.a.t.m.a.n; +Cc: Marek Lindner
All radiotap header fields are specified in little endian byte-order.
Header length conversion is necessary on some platforms.
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
tcpdump.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tcpdump.c b/tcpdump.c
index 4b9e4f6..1beace1 100644
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -1144,10 +1144,10 @@ static int monitor_header_length(unsigned char *packet_buff, ssize_t buff_len, i
return -1;
radiotap_hdr = (struct radiotap_header*)packet_buff;
- if (buff_len <= radiotap_hdr->it_len)
+ if (buff_len <= le16toh(radiotap_hdr->it_len))
return -1;
else
- return radiotap_hdr->it_len;
+ return le16toh(radiotap_hdr->it_len);
}
return -1;
--
2.25.1
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