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tcp: move mtu_info to remove two 32bit holes 

This removes 8bytes waste on 64bit builds.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250919204856.2977245-8-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2025-09-19 20:48:55 +00:00 committed by Jakub Kicinski
parent a105ea47a4
commit 31c4511bbb
1 changed files with 3 additions and 3 deletions
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6
include/linux/tcp.h
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@ -448,6 +448,9 @@ struct tcp_sock {
* the first SYN. */ * the first SYN. */
u32 undo_marker; /* snd_una upon a new recovery episode. */ u32 undo_marker; /* snd_una upon a new recovery episode. */
int undo_retrans; /* number of undoable retransmissions. */ 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 u64 bytes_retrans; /* RFC4898 tcpEStatsPerfOctetsRetrans
* Total data bytes retransmitted * Total data bytes retransmitted
*/ */
@ -494,9 +497,6 @@ struct tcp_sock {
u32 probe_seq_end; u32 probe_seq_end;
} mtu_probe; } mtu_probe;
u32 plb_rehash; /* PLB-triggered rehash attempts */ 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) #if IS_ENABLED(CONFIG_MPTCP)
bool is_mptcp; bool is_mptcp;
#endif #endif