Commit 31c4511b authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

tcp: move mtu_info to remove two 32bit holes 



This removes 8bytes waste on 64bit builds.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarKuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250919204856.2977245-8-edumazet@google.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent a105ea47

include/linux/tcp.h

+3 −3
Original line number Diff line number Diff line
@@ -448,6 +448,9 @@ struct tcp_sock { 
				 * the first SYN. */

	u32	undo_marker;	/* snd_una upon a new recovery episode. */

	int	undo_retrans;	/* number of undoable retransmissions. */

	u32	mtu_info; /* We received an ICMP_FRAG_NEEDED / ICMPV6_PKT_TOOBIG

			   * while socket was owned by user.

			   */

	u64	bytes_retrans;	/* RFC4898 tcpEStatsPerfOctetsRetrans

				 * Total data bytes retransmitted

				 */
@@ -494,9 +497,6 @@ struct tcp_sock { 
		u32		  probe_seq_end;

	} mtu_probe;

	u32     plb_rehash;     /* PLB-triggered rehash attempts */

	u32	mtu_info; /* We received an ICMP_FRAG_NEEDED / ICMPV6_PKT_TOOBIG

			   * while socket was owned by user.

			   */

#if IS_ENABLED(CONFIG_MPTCP)

	bool	is_mptcp;

#endif