git: 70810dc8178c - main - netlink: add nlattr_get_uint8() function to pack u8 attributes.

The branch main has been updated by melifaro:

URL: https://cgit.FreeBSD.org/src/commit/?id=70810dc8178cdc473f31f10bdfaec5de533dd67e

commit 70810dc8178cdc473f31f10bdfaec5de533dd67e
Author:     Alexander V. Chernikov <melifaro@FreeBSD.org>
AuthorDate: 2023-04-25 10:56:42 +0000
Commit:     Alexander V. Chernikov <melifaro@FreeBSD.org>
CommitDate: 2023-04-25 10:56:42 +0000

    netlink: add nlattr_get_uint8() function to pack u8 attributes.
    
    MFC after:      2 weeks
---
 sys/netlink/netlink_message_parser.c | 14 +++++++++++++-
 sys/netlink/netlink_message_parser.h |  2 ++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/sys/netlink/netlink_message_parser.c b/sys/netlink/netlink_message_parser.c
index d0aaf4301872..c6cd82260e5b 100644
--- a/sys/netlink/netlink_message_parser.c
+++ b/sys/netlink/netlink_message_parser.c
@@ -314,11 +314,23 @@ nlattr_get_ipvia(struct nlattr *nla, struct nl_pstate *npt, const void *arg, voi
 }
 
 
+int
+nlattr_get_uint8(struct nlattr *nla, struct nl_pstate *npt, const void *arg, void *target)
+{
+	if (__predict_false(NLA_DATA_LEN(nla) != sizeof(uint8_t))) {
+		NLMSG_REPORT_ERR_MSG(npt, "nla type %d size(%u) is not uint8",
+		    nla->nla_type, NLA_DATA_LEN(nla));
+		return (EINVAL);
+	}
+	*((uint16_t *)target) = *((const uint16_t *)NL_RTA_DATA_CONST(nla));
+	return (0);
+}
+
 int
 nlattr_get_uint16(struct nlattr *nla, struct nl_pstate *npt, const void *arg, void *target)
 {
 	if (__predict_false(NLA_DATA_LEN(nla) != sizeof(uint16_t))) {
-		NLMSG_REPORT_ERR_MSG(npt, "nla type %d size(%u) is not uint32",
+		NLMSG_REPORT_ERR_MSG(npt, "nla type %d size(%u) is not uint16",
 		    nla->nla_type, NLA_DATA_LEN(nla));
 		return (EINVAL);
 	}
diff --git a/sys/netlink/netlink_message_parser.h b/sys/netlink/netlink_message_parser.h
index 067d25dae7d8..85d1c20557a2 100644
--- a/sys/netlink/netlink_message_parser.h
+++ b/sys/netlink/netlink_message_parser.h
@@ -169,6 +169,8 @@ int nlattr_get_flag(struct nlattr *nla, struct nl_pstate *npt,
     const void *arg, void *target);
 int nlattr_get_ip(struct nlattr *nla, struct nl_pstate *npt,
     const void *arg, void *target);
+int nlattr_get_uint8(struct nlattr *nla, struct nl_pstate *npt,
+    const void *arg, void *target);
 int nlattr_get_uint16(struct nlattr *nla, struct nl_pstate *npt,
     const void *arg, void *target);
 int nlattr_get_uint32(struct nlattr *nla, struct nl_pstate *npt,