Date: Fri, 03 Jul 2026 08:39:42 +0000 From: Kristof Provost <kp@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Cc: Ishan Agrawal <iagrawal9990@gmail.com> Subject: git: c9d98c013486 - main - netlink: add const variants of NLA iteration macros Message-ID: <6a47754e.37d3b.397c0b06@gitrepo.freebsd.org>
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The branch main has been updated by kp: URL: https://cgit.FreeBSD.org/src/commit/?id=c9d98c0134864d8bc69006b92d34a3b22c940870 commit c9d98c0134864d8bc69006b92d34a3b22c940870 Author: Ishan Agrawal <iagrawal9990@gmail.com> AuthorDate: 2026-06-28 04:14:28 +0000 Commit: Kristof Provost <kp@FreeBSD.org> CommitDate: 2026-07-03 08:20:12 +0000 netlink: add const variants of NLA iteration macros Add const-qualified versions of the NLA iteration helpers to allow walking immutable netlink attribute buffers without discarding const qualifiers. This introduces NLA_NEXT_CONST(), _NLA_END_CONST(), and NLA_FOREACH_CONST() in netlink_snl.h. Signed-off-by: Ishan Agrawal <iagrawal9990@gmail.com> Sponsored-by : Google LLC (GSoC 2026) --- sys/netlink/netlink_snl.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/sys/netlink/netlink_snl.h b/sys/netlink/netlink_snl.h index 52b35e502c98..34a0f3791af2 100644 --- a/sys/netlink/netlink_snl.h +++ b/sys/netlink/netlink_snl.h @@ -69,6 +69,18 @@ ((char *)NLA_NEXT(_attr) <= _NLA_END(_start, _len)); \ _attr = NLA_NEXT(_attr)) +#define NLA_NEXT_CONST(_attr) (const struct nlattr *)(const void *) \ + ((const char *)_attr + NLA_ALIGN(_attr->nla_len)) + +#define _NLA_END_CONST(_start, _len) \ + ((const char *)(_start) + (_len)) +#define NLA_FOREACH_CONST(_attr, _start, _len) \ + for (_attr = (const struct nlattr *)(_start); \ + ((const char *)_attr < _NLA_END_CONST(_start, _len)) && \ + ((const char *)NLA_NEXT_CONST(_attr) <= \ + _NLA_END_CONST(_start, _len)); \ + _attr = NLA_NEXT_CONST(_attr)) + struct linear_buffer { char *base; /* Base allocated memory pointer */ uint32_t offset; /* Currently used offset */home | help
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