[Bug 273902] Backwards-incompatible size change in struct tcp_info

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 22 Sep 2023 17:25:36 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273902

--- Comment #2 from commit-hook@FreeBSD.org ---
A commit in branch stable/14 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=2209676efe9a23d9411fa0314b9c6bb285baefc1

commit 2209676efe9a23d9411fa0314b9c6bb285baefc1
Author:     Alan Somers <asomers@FreeBSD.org>
AuthorDate: 2023-09-17 14:22:08 +0000
Commit:     Alan Somers <asomers@FreeBSD.org>
CommitDate: 2023-09-22 16:57:03 +0000

    Fix padding in struct tcp_info

    This structure should have the same size across different FreeBSD
    versions to ensure backwards-compatibility.  It has since stable/6.  But
    two recent changes added fields without compensating by reducing
    padding:
    945f9a7cc9dcc071bfcc702748fbbb11087ae773 and
    22c81cc51636cfebe94e0979eb31556d87775938 .  Reduce padding to
    compensate.

    Direct commit to stable/14 because we decided to break compatibility in
    FreeBSD 15 in order to add more fields.  Of course, that decision could
    be reversed before 15.0-RELEASE.  See the review for details.

    PR:             273902
    MFC after:      1 week
    Reviewed by:    tuexen, glebius
    Differential Revision: https://reviews.freebsd.org/D41894

 sys/netinet/tcp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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