On 10/29/25 3:35 PM, Xin Long wrote:

+struct quic_pnspace {
+	/* ECN counters indexed by direction (TX/RX) and ECN codepoint (ECT1, ECT0, CE) */
+	u64 ecn_count[QUIC_ECN_DIR_MAX][QUIC_ECN_MAX];
+	unsigned long *pn_map;	/* Bit map tracking received packet numbers for ACK generation */
+	u16 pn_map_len;		/* Length of the packet number bit map (in bits) */
+	u8  need_sack:1;	/* Flag indicating a SACK frame should be sent for this space */
+	u8  sack_path:1;	/* Path used for sending the SACK frame */
+
+	s64 last_max_pn_seen;	/* Highest packet number seen before pn_map advanced */
+	u32 last_max_pn_time;	/* Timestamp when last_max_pn_seen was received */
+	u32 max_time_limit;	/* Time threshold to trigger pn_map advancement on packet receipt */
+	s64 min_pn_seen;	/* Smallest packet number received in this space */
+	s64 max_pn_seen;	/* Largest packet number received in this space */
+	u32 max_pn_time;	/* Time at which max_pn_seen was received */
+	s64 base_pn;		/* Packet number corresponding to the start of the pn_map */
+	u32 time;		/* Cached current time, or time accept a socket (listen socket) */

There are a few 32 bits holes above you could avoid reordering the fields.

Otherwise LGTM,

Acked-by: Paolo Abeni <pabeni@redhat.com>