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| author | Alan Somers <asomers@FreeBSD.org> | 2023-09-17 14:22:08 +0000 |
|---|---|---|
| committer | Alan Somers <asomers@FreeBSD.org> | 2023-09-22 16:57:03 +0000 |
| commit | 2209676efe9a23d9411fa0314b9c6bb285baefc1 (patch) | |
| tree | bdd2c847b7d85dbf2c312e67c0c39cdb707caa33 | |
| parent | fbd543a3fe306bdf84775f869a899c21fdc0d554 (diff) | |
| download | src-2209676efe9a23d9411fa0314b9c6bb285baefc1.tar.gz src-2209676efe9a23d9411fa0314b9c6bb285baefc1.zip | |
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
| -rw-r--r-- | sys/netinet/tcp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/netinet/tcp.h b/sys/netinet/tcp.h index 2b898d062b0d..bfb825930c66 100644 --- a/sys/netinet/tcp.h +++ b/sys/netinet/tcp.h @@ -434,7 +434,7 @@ struct tcp_info { u_int32_t tcpi_dupacks; /* Consecutive dup ACKs recvd */ /* Padding to grow without breaking ABI. */ - u_int32_t __tcpi_pad[14]; /* Padding. */ + u_int32_t __tcpi_pad[10]; /* Padding. */ }; /* |