BUG/MINOR: quic: do not reject datagrams matching minimum permitted size
The dgram length check in quic_get_dgram_dcid() rejects datagrams
matching exactly the minimum allowed length, which doesn't seem
correct. I doubt any useful packet would be that small but better
fix this to avoid confusing debugging sessions in the future.
This might be backported to 2.6.
diff --git a/src/xprt_quic.c b/src/xprt_quic.c
index a6e257d..4046b67 100644
--- a/src/xprt_quic.c
+++ b/src/xprt_quic.c
@@ -6615,7 +6615,7 @@
minlen = long_header ? QUIC_LONG_PACKET_MINLEN :
QUIC_SHORT_PACKET_MINLEN + QUIC_HAP_CID_LEN + QUIC_TLS_TAG_LEN;
skip = long_header ? QUIC_LONG_PACKET_DCID_OFF : QUIC_SHORT_PACKET_DCID_OFF;
- if (end - buf <= minlen)
+ if (end - buf < minlen)
goto err;
buf += skip;