Function key_senderror

freebsd/netipsec/key.c:7984–7995

}

static int
key_senderror(struct socket *so, struct mbuf *m, int code)
{
	struct sadb_msg *msg;

	IPSEC_ASSERT(m->m_len >= sizeof(struct sadb_msg),
		("mbuf too small, len %u", m->m_len));

	msg = mtod(m, struct sadb_msg *);
	msg->sadb_msg_errno = code;
	return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
}

/*
 * set the pointer to each header into message buffer.